JP7357806B2 - ventilation system - Google Patents

Description

The present disclosure relates to a ventilation device that has at least one of a function of taking in air from the outdoors into a room or a function of discharging air from the room to the outdoors.

Conventionally, heat exchange type ventilation devices are known, such as the heat exchange type ventilation device shown in Patent Document 1, which are installed in buildings and perform ventilation while exchanging heat between outdoor air and indoor air. It is being In such a heat exchange type ventilation system, there is generally a duct connection port to which a duct through which air flows communicates between the inside of the heat exchange type ventilation system and the outdoors, and a duct connection port that connects the inside of the heat exchange type ventilation system and the indoor space. The duct connection port to which the duct through which air flows is connected is fixed in direct contact with the parts of the casing that make up the outer shell of the heat exchange ventilation system using fastening parts such as screws. There is.

JP2015-218923A

However, if the duct connection port is fixed in direct contact with the parts of the housing using fasteners, the vibrations of the duct may be transmitted to the main body of the heat exchange type ventilation system through the duct connection port, or the heat There was a problem in that the vibration of the main body of the replaceable ventilation device was transmitted to the duct through the duct connection port. If the vibration of the duct is transmitted to the main body of the heat exchange type ventilation system, the vibration of the main body of the heat exchange type ventilation system will generate abnormal noise and cause noise. It may cause a malfunction. In addition, when vibrations of the main body of the heat exchange type ventilation device are transmitted to the duct, the vibration of the duct generates abnormal noise, which causes noise.

The present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a ventilation device that can suppress transmission of vibration between a duct and a ventilation device via a duct connection port that connects the duct and the ventilation device. With the goal.

In order to solve the above-mentioned problems and achieve the purpose, a ventilation device according to the present disclosure includes a casing forming an outer shell and a through hole communicating with an air passage provided inside the casing. A cylindrical duct that communicates with the air passage and is provided on the outer surface of the casing, to which the inner structure placed inside the body is connected to the duct that communicates the inside of the casing with the outside of the casing. A connection port is provided. In the duct connection port, a mounting portion, which is a part of the duct connection port, is held between an outer shell component that constitutes the outer surface and an inner structure. The attachment portion is a flange that is sandwiched between the outer part of the housing and the inner structure via a cushioning material, and is provided to protrude from the outer circumferential surface of the duct connection port. The flange includes a flange convex portion protruding from the outer periphery of the flange. The cushioning material includes a cushioning material recess that accommodates the flange protrusion. By fitting the flange convex portion into the cushioning material recess, rotation of the duct connection port about the cylindrical axis of the duct connection port is restricted.

The ventilation device according to the present disclosure has the effect of being able to suppress vibrations from being transmitted between the duct and the ventilation device via the duct connection port that connects the duct and the ventilation device.

An exploded perspective view showing the heat exchange type ventilation device according to the first embodiment. FIG. 2 is a perspective view showing an assembled state of the heat exchange type ventilation device shown in FIG. 1, and is a view showing a state in which the heat exchange type ventilation device is hung and installed on the wall of a building. A perspective view showing a state in which the control board is pulled out of the housing from the heat exchange type ventilation device shown in FIG. 2. A perspective view showing the state in which various filters and various filter covers have been removed from the heat exchange type ventilation system shown in Figure 2. A plan view of a heat exchange type ventilation device according to Embodiment 1 Bottom view of the heat exchange type ventilation device according to Embodiment 1 Front view of the heat exchange type ventilation device according to Embodiment 1 Rear view of the heat exchange type ventilation device according to Embodiment 1 Right side view of the heat exchange type ventilation device according to Embodiment 1 Cross-sectional view taken along line XX shown in Figure 9 A perspective view showing a heat exchange element of the heat exchange type ventilation device according to the first embodiment. A cross-sectional view showing the mounting structure of the outdoor side suction port in the heat exchange type ventilation device according to the first embodiment. A sectional view showing an enlarged view of the vicinity of the outdoor suction port flange in the mounting structure of the outdoor suction port shown in FIG. 12 FIG. 6 is a diagram showing the heat exchange type ventilation system shown in FIG. 5 with the top plate and cushioning material removed, and is a diagram illustrating the configuration of the outdoor suction port and the inner structure. A plan view showing an enlarged detail of the mounting structure of the outdoor side suction port shown in FIG. 14 A plan view showing an enlarged detail of the mounting structure of the outdoor side suction port shown in FIG. 14 14 is a sectional view showing a modification of the mounting structure of the outdoor side suction port shown in FIG. 12, and a plan view corresponding to FIG. 13. 13 is a sectional view showing a modification of the mounting structure of the outdoor side suction port shown in FIG. 12, and a plan view corresponding to FIG. 16. 13 is a sectional view showing a modification of the mounting structure of the outdoor side suction port shown in FIG. 12, and a plan view corresponding to FIG. 16.

Below, a ventilation device according to an embodiment will be described in detail based on the drawings.

Embodiment 1.
FIG. 1 is an exploded perspective view showing a heat exchange type ventilation device 100 according to the first embodiment. FIG. 2 is a perspective view showing the assembled state of the heat exchange type ventilation device 100 shown in FIG. It is. FIG. 3 is a perspective view showing a state in which the control board 15 is pulled out of the housing 1 from the heat exchange type ventilation apparatus 100 shown in FIG. FIG. 4 is a perspective view showing the heat exchange type ventilation apparatus 100 shown in FIG. 2 with various filters and filter covers removed. FIG. 4 shows a state in which the outside air filter 5, the exhaust filter 6, and the supply air filter 7, which are filters provided in the heat exchange type ventilation device 100, are removed. Moreover, FIG. 4 shows a state in which the outside air filter lid 20, the exhaust filter lid 21, and the supply air filter lid 22, which are the filter lids provided on the heat exchange type ventilation device 100, are removed. There is.

The heat exchange type ventilation device 100 includes a housing 1, a heat exchange element 2, a supply air blower 3, an exhaust air blower 4, an outside air filter 5, an exhaust filter 6, and an air supply filter 7. The heat exchange type ventilation device 100 also includes an outdoor side suction port 8, an indoor side suction port 9, an indoor side outlet 10, an outdoor side outlet 11, a drain pan 12, an exhaust side drain port 13a, and a supply side drain port 13a. It includes an air side drain port 13b, an operation section 14, and a control board 15. The heat exchange type ventilation device 100 is a ventilation device that performs indoor ventilation while exchanging heat between outdoor air and indoor air. This is a ventilation device that has the function of exhausting air to the outside. As shown in FIG. 2, the heat exchange type ventilation device 100 is installed so as to hang near a ceiling surface 31 on a wall surface 30 of a building.

The housing 1 is a box-shaped member that constitutes the outer shell of the heat exchange type ventilation device 100. The shape of the casing 1 may be cubic, but in this embodiment it is a rectangular parallelepiped. The housing 1 includes a top plate 1a, a bottom plate 1b, a front plate 1c, a back plate 1d, a left side plate 1e, and a right side plate 1f. In the first embodiment, a plate portion of the housing 1 that is in contact with the wall surface 30 is referred to as a back plate 1d, and a plate portion disposed on the opposite side of the wall surface 30 with the back plate 1d interposed therebetween is referred to as a front plate 1c. When describing directions, the normal direction of the front plate 1c facing the outside of the housing 1 is referred to as the front, the normal direction of the back plate 1d facing the outside of the housing 1 is referred to as the rear, and the normal direction of the front plate 1c facing the outside of the housing 1 is referred to as the rear. The up-down direction as viewed from the user facing the face plate 1c is defined as the up-down direction, and the left-right direction as seen from the user facing the front plate 1c is defined as the left-right direction. The front-rear direction, which is a direction along the normal direction of the front plate 1c and the normal direction of the back plate 1d, corresponds to the depth direction of the housing 1. The vertical direction corresponds to the height direction of the housing 1. The left and right direction corresponds to the width direction of the housing 1.

The normal line of the top plate 1a in the direction toward the outside of the housing 1 points upward. The top plate 1a has a rectangular shape in plan view. The top plate 1a has an outdoor side suction port 8 which is a duct connection port for sucking air from outside into the inside of the casing 1, and a duct connection port 8 which is a duct connection port for sucking air from the room into the inside of the casing 1. A certain indoor suction port 9 is provided. The top plate 1a has an indoor air outlet 10 which is a duct connection port for blowing air from the outdoors to the outside of the casing 1, and a duct connection port for blowing air from the room to the outside of the casing 1. A certain outdoor air outlet 11 is provided.

A duct 27a connected to the outdoors is connected to the outdoor suction port 8, which is a duct connection port. A duct 27b connected indoors is connected to the indoor suction port 9, which is a duct connection port. A duct 27c connected indoors is connected to the indoor air outlet 10, which is a duct connection port. A duct 27d connected to the outdoors is connected to the outdoor air outlet 11, which is a duct connection port. Design materials 28 for hiding the outdoor air inlet 8, the indoor air inlet 9, the indoor air outlet 10, the outdoor air outlet 11, and the ducts 27a, 27b, 27c, and 27d are arranged on the top plate 1a. has been done.

FIG. 5 is a plan view of the heat exchange type ventilation device 100 according to the first embodiment. Here, a centerline C is a line passing through the center of the top plate 1a in the left-right direction and extending perpendicularly to the front plate 1c and the back plate 1d. The indoor side suction port 9 and the indoor side air outlet 10 are arranged to the left of the center line C in the top plate 1a. The outdoor side suction port 8 and the outdoor side air outlet 11 are arranged to the right of the center line C in the top plate 1a. The outdoor side suction port 8 is arranged in front of the outdoor side air outlet 11 on the top plate 1a. The indoor side air outlet 10 is arranged in front of the indoor side suction port 9 on the top plate 1a. The outdoor side suction port 8 and the indoor side air outlet 10 are arranged at the same position in the front-rear direction on the top plate 1a. The indoor side suction port 9 and the outdoor side air outlet 11 are arranged at the same position in the front-rear direction on the top plate 1a.

FIG. 6 is a bottom view of the heat exchange type ventilation device 100 according to the first embodiment. The normal line of the bottom plate 1b in the direction toward the outside of the housing 1 points downward. The bottom plate 1b has a rectangular shape when viewed from the bottom. The bottom plate 1b is arranged below the top plate 1a and away from the top plate 1a. A substrate opening 16 is formed in the bottom plate 1b to communicate the inside and outside of the housing 1. The board opening 16 is an opening for pulling out the control board 15 to the outside of the casing 1 and inserting the control board 15 into the inside of the casing 1. The substrate opening 16 has a rectangular shape when viewed from below. The substrate opening 16 is located forward of the center of the bottom plate 1b in the front-rear direction. In the first embodiment, the substrate opening 16 is arranged near the boundary between the bottom plate 1b and the front plate 1c. The bottom plate 1b is provided with an exhaust side drain port 13a and an air supply side drain port 13b. In the first embodiment, the exhaust side drain port 13a is arranged near the right rear corner of the bottom plate 1b. In the first embodiment, the air supply side drain port 13b is arranged near the left rear corner of the bottom plate 1b.

FIG. 7 is a front view of the heat exchange type ventilation device 100 according to the first embodiment. The normal line of the front plate 1c in the direction toward the outside of the housing 1 faces the front, which is the front. The front plate 1c connects the front ends of the top plate 1a and the bottom plate 1b. The front view shape of the front plate 1c is rectangular. As shown in FIGS. 4 and 7, the front plate 1c includes an outside air filter opening 17, an exhaust filter opening 18, and a supply air filter opening 17 that communicate the inside of the housing 1 with the outside of the housing 1. A portion 19 is formed.

The outside air filter opening 17 is an opening for attaching the outside air filter 5 to the inside of the housing 1 and for taking out the outside air filter 5 to the outside of the housing 1. The outside air filter opening 17 is arranged to the right of the center of the front plate 1c in the left-right direction. The outside air filter opening 17 has a rectangular shape when viewed from the front. The outside air filter opening 17 is inclined so that it approaches the right side plate 1f from the top to the bottom.

The outside air filter lid 20 can be opened and closed by attaching and detaching it. The outside air filter lid 20 covers the outside air filter opening 17 when closed. An operating section 14 for starting operation of the heat exchange type ventilation apparatus 100, stopping the heat exchange type ventilation apparatus 100, etc. is provided below the outside air filter opening 17 on the front plate 1c. In the first embodiment, the operation unit 14 is arranged near the lower right corner of the front plate 1c.

The exhaust filter opening 18 is an opening for attaching the exhaust filter 6 to the inside of the housing 1 and for taking out the exhaust filter 6 to the outside of the housing 1. The exhaust filter opening 18 is arranged to the left of the center of the front plate 1c in the left-right direction. Further, the exhaust filter opening 18 is provided at the same height as the outside air filter opening 17. The exhaust filter opening 18 has a rectangular shape when viewed from the front. The exhaust filter opening 18 is inclined so that it approaches the left side plate 1e from the top to the bottom.

The exhaust filter lid 21 can be opened and closed by attaching and detaching it. The exhaust filter lid 21 covers the exhaust filter opening 18 when closed.

The air supply filter opening 19 is an opening for attaching the air supply filter 7 to the inside of the housing 1 and for taking out the air supply filter 7 to the outside of the housing 1. The air supply filter opening 19 is arranged to the left of the center of the front plate 1c in the left-right direction. Moreover, the air supply filter opening 19 is arranged below the exhaust filter opening 18. The shape of the air supply filter opening 19 when viewed from the front is rectangular. The air supply filter opening 19 is inclined so that it approaches the right side plate 1f from the top to the bottom.

The air supply filter lid 22 can be opened and closed by attaching and detaching it. The air supply filter lid 22 covers the air supply filter opening 19 when closed.

FIG. 8 is a rear view of the heat exchange type ventilation device 100 according to the first embodiment. The normal line of the back plate 1d in the direction toward the outside of the housing 1 faces rearward. The back plate 1d connects the rear ends of the top plate 1a and the bottom plate 1b. The back plate 1d has a rectangular shape in a rear view.

FIG. 9 is a right side view of the heat exchange type ventilation device 100 according to the first embodiment. The normal line of the right side plate 1f in the direction toward the outside of the housing 1 points to the right. The right side plate 1f connects the right ends of the top plate 1a and the bottom plate 1b. The side view shape of the right side plate 1f is rectangular. The normal line of the left side plate 1e shown in FIG. 8 in the direction toward the outside of the housing 1 points to the left. The left side plate 1e connects the left ends of the top plate 1a and the bottom plate 1b. The left side plate 1e has a rectangular shape in side view.

FIG. 10 is a cross-sectional view taken along line XX shown in FIG. A solid arrow X shown in FIG. 10 indicates the flow of air from the outdoors to the room, that is, the flow of air supply. The broken line arrow Y shown in FIG. 10 indicates the flow of air from the indoor to the outdoor, that is, the flow of exhaust air. In addition, in FIG. 10, for ease of explanation, the outdoor side suction port 8 and the indoor side air outlet 10 are not shown in cross section. Inside the housing 1, an air supply path 23 for supplying air from the outdoors into the room and an exhaust air path 24 for exhausting air from the room to the outside are formed.

The air supply air path 23 is an air path that takes outdoor air into the housing 1 from the outdoor air intake port 8 and supplies the air indoors from the indoor air outlet 10. The exhaust air path 24 is an air path that takes indoor air into the casing 1 from the indoor suction port 9 and exhausts it toward the outdoors from the outdoor air outlet 11. In the following description, upstream and downstream are based on the flow direction of air flowing through the supply air path 23 or the exhaust air path 24.

In the air supply air path 23, an outside air filter 5, a heat exchange element 2, an air supply filter 7, and an air supply blower 3 are arranged in order from the upstream side. A portion of the air supply air passage 23 is formed of a heat insulating component 25 shown in FIG. 1 in order to suppress the occurrence of dew condensation.

In the exhaust air path 24, an exhaust filter 6, a heat exchange element 2, and an exhaust blower 4 are arranged in order from the upstream side. A part of the exhaust air passage 24 is formed of a heat insulating component 25 shown in FIG. 1 in order to suppress the occurrence of dew condensation.

The heat exchange element 2 is a member that exchanges heat between the outdoor air flowing in the supply air path 23 and the indoor air flowing in the exhaust air path 24. The heat exchange element 2 is installed within the housing 1 between the top plate 1a and the pedestal 12a. A space 29 for accommodating the control board 15 is formed between the pedestal 12a and the bottom plate 1b. The heat exchange element 2 is arranged at the center of the housing 1 in the left-right direction. In the first embodiment, the heat exchange element 2 is installed horizontally with respect to the front-rear direction and inclined with respect to the left-right direction, but it may be installed horizontally or inclined with respect to any direction. Good too.

FIG. 11 is a perspective view showing the heat exchange element 2 of the heat exchange type ventilation apparatus 100 according to the first embodiment. The shape of the heat exchange element 2 is not particularly limited as long as it is a polygonal prism, but in the first embodiment it is a hexagonal prism. The heat exchange element 2 includes a plurality of partition members 2a arranged at intervals from each other, and a plurality of spacing members 2b that maintain intervals between the partition members 2a. The partition member 2a is formed into a flat sheet shape. The partition members 2a and the spacing members 2b are alternately stacked.

An air passage is formed between adjacent partition members 2a. The heat exchange element 2 is provided with alternating air paths through which air from outside flows and air paths through which air from inside the room flows. In the first embodiment, the heat exchange element 2 is a counterflow type heat exchange element in which the direction of flow of air from outside and the direction of flow of air from inside the room differ by 180 degrees. Note that the heat exchange element 2 may be an orthogonal type heat exchange element in which the direction of flow of air from outside and the direction of flow of air from indoors are orthogonal to each other.

In the first embodiment, the stacking direction, which is the direction in which the partition member 2a and the spacing member 2b are stacked, coincides with the front-rear direction and is perpendicular to the front plate 1c and the back plate 1d. The stacking direction may be a direction that coincides with the up-down direction and is perpendicular to the top plate 1a and the bottom plate 1b, or a direction that coincides with the left-right direction and is perpendicular to the left side plate 1e and the right side plate 1f. By appropriately changing the material of the partition member 2a, the heat exchange element 2 may be configured to perform both sensible heat exchange and latent heat exchange, or it may be configured to perform either sensible heat exchange or latent heat exchange. Good too.

As shown in FIG. 10, the air supply blower 3 is a blower disposed within the air supply air path 23. As shown in FIG. The air supply blower 3 takes air into the air supply path 23 from the outdoor side suction port 8 and blows the air indoors from the indoor side outlet 10. The air supply blower 3 is arranged downstream of the heat exchange element 2, the outside air filter 5, and the air supply filter 7.

The exhaust blower 4 is a blower disposed within the exhaust air path 24. The exhaust blower 4 takes air into the exhaust air passage 24 from the indoor suction port 9 and blows the air toward the outdoors from the outdoor air outlet 11. The exhaust blower 4 is arranged downstream of the exhaust filter 6 and the heat exchange element 2.

The outside air filter 5 is a member that is disposed within the air supply air path 23 and collects foreign substances such as dust and insects contained in the air from outside. The outside air filter 5 is located downstream of the outdoor air intake port 8 and upstream of the heat exchange element 2 . The outside air filter 5 is arranged at the outdoor air inlet of the heat exchange element 2 . By collecting foreign matter such as dust with the outside air filter 5, clogging of the heat exchange element 2 due to adhesion of foreign matter can be suppressed. The outside air filter 5 is arranged to the right of the center of the housing 1 in the left-right direction.

The air supply filter 7 is a member that is disposed within the air supply air path 23 and collects foreign substances such as dust and insects contained in the air from outside. The air supply filter 7 is located downstream of the heat exchange element 2 and upstream of the indoor air outlet 10. The air supply filter 7 is arranged at the outdoor air outlet of the heat exchange element 2 . By providing two filters, the outside air filter 5 and the supply air filter 7, in the air supply air path 23, the air from outside can be further purified. The air supply filter 7 is arranged to the left of the center of the housing 1 in the left-right direction.

The exhaust filter 6 is a member disposed within the exhaust air passage 24 to collect foreign matter such as dust and insects contained in the air from the room. The exhaust filter 6 is located downstream of the indoor suction port 9 and upstream of the heat exchange element 2 . The exhaust filter 6 is arranged at the indoor air inlet of the heat exchange element 2 . The exhaust filter 6 is arranged to the left of the center of the housing 1 in the left-right direction.

The drain pan 12 is a member that is disposed below the heat exchange element 2 inside the housing 1 and stores drain water generated in the heat exchange element 2. Drain pan 12 is arranged on bottom plate 1b.

The exhaust side drain port 13a and the air supply side drain port 13b are members that discharge drain water stored in the drain pan 12 to the outside of the housing 1. The exhaust side drain port 13a and the air supply side drain port 13b are formed in a cylindrical shape extending in the vertical direction. The exhaust side drain port 13a and the air supply side drain port 13b penetrate the bottom plate 1b and the drain pan 12. The lower ends of the exhaust side drain port 13a and the air supply side drain port 13b protrude below the bottom plate 1b. The upper ends of the exhaust side drain port 13a and the air supply side drain port 13b are provided at the same height as the bottom surface of the drain pan 12. In the first embodiment, the exhaust side drain port 13a and the air supply side drain port 13b are formed integrally with the drain pan 12.

The control board 15 is arranged in the space 29 below the heat exchange element 2 inside the housing 1 . The control board 15 is electrically connected to the operating section 14 shown in FIG. 1 by a cable not shown. As shown in FIG. 1, the control board 15 includes a first board 15a and a second board 15b. The first substrate 15a is a substrate connected to a power source (not shown). The first substrate 15a is housed in a box-shaped first substrate case 15c that opens downward. The second board 15b is a board having a connection part to which a sensor (not shown) is connected, a control setting part, and the like. The sensor connected to the second substrate 15b is, for example, a humidity sensor or a carbon dioxide (CO ₂ ) sensor. The second board 15b is attached to the second board case 15d. The substrate lid 15f is a lid that closes an opening for taking out the second substrate 15b to the outside of the housing 1.

FIG. 12 is a sectional view showing the mounting structure of the outdoor side suction port 8 in the heat exchange type ventilation device 100 according to the first embodiment. FIG. 13 is an enlarged sectional view showing the vicinity of the outdoor suction port flange 40 in the mounting structure of the outdoor suction port 8 shown in FIG. 12. As shown in FIG. FIG. 14 is a diagram showing a state in which the top plate 1a and the cushioning material 44 are removed in the heat exchange type ventilation device 100 shown in FIG. It is. In FIG. 14, since the inner structure 42 is shown with a focus on the structural part that fixes the outdoor suction port 8, the outer edge of the inner structure 42 is omitted, and the entire inner structure 42 is not shown. Not yet. Moreover, in FIG. 14, the tapered shape of the outer peripheral surface 8a of the outdoor side suction port 8 is omitted. Although FIG. 14 is a plan view, the upper end surface of the outdoor suction port 8 is hatched for ease of understanding. FIG. 15 is an enlarged plan view showing the details of the mounting structure of the outdoor suction port 8 shown in FIG. 14. As shown in FIG. In FIG. 15, the vicinity of the flange convex portion 41 is shown in an enlarged manner. FIG. 16 is an enlarged plan view showing the details of the mounting structure of the outdoor suction port 8 shown in FIG. 14. In FIG. 16, the vicinity of the buffer material 44 is shown in an enlarged manner.

The top plate 1 a is an outer shell component that forms the outer shell of the housing 1 . The top plate 1a is provided with an opening 1aa into which the outdoor suction port 8 is inserted. The outdoor side suction port 8, which is a duct connection port, is inserted and fixed into an opening 1aa provided in the top plate 1a. The opening 1aa has the same shape as the outer circumferential shape of the outdoor suction port 8, and is larger than the outer circumferential portion of the outdoor suction port 8 that faces the top plate 1a at the same position in the vertical direction. In the first embodiment, the opening 1aa has a diameter larger than the diameter of the outer circumference of the outdoor suction port 8 that faces the top plate 1a at the same position in the vertical direction. Thereby, the opening 1aa of the top plate 1a and the outdoor suction port 8 have a positional relationship in which they do not have a contact surface.

The inner structure 42 is a structure disposed inside the housing 1 at a position facing the top plate 1a. The top plate 1a is a component of the casing 1 that constitutes the outer shell of the casing 1. The inner structure 42 functions as a holding part that fixes the outdoor side suction port 8 by holding an outdoor side suction port flange 40 and a flange convex part 41, which are attachment parts of the outdoor side suction port 8, which will be described later, together with the top plate 1a. has. That is, in the heat exchange type ventilation device 100, the outdoor side suction port 8, which is the duct connection port, has the outdoor side suction port flange 40 and the flange convex portion 41, which are a part of the outdoor side suction port 8, connected to the inner structure 42 and the ceiling. By being sandwiched between the plate 1a and the plate 1a, it is fixed without using fastening parts such as screws.

The inner structure 42 may be a part of the components necessary for the configuration of the heat exchange type ventilation device 100. As the inner structure 42, for example, a part of the heat insulating component 25 that constitutes a part of the air supply air passage 23 can be used. Further, the inner structure 42 may be formed by expanding the components necessary for the configuration of the heat exchange type ventilation device 100. In addition, the inner structure 42 may be provided as a dedicated component that functions as a holding part if there is space inside the housing 1. The inner structure 42 is supported and fixed inside the housing 1 by other members. Moreover, when the inner structure 42 is fixed by the top plate 1a, it does not need to be fixed by other members inside the housing 1.

The outdoor side suction port 8 is formed in a cylindrical shape extending in the vertical direction with the central axis 8c as an axis. The outside diameter of the outdoor suction port 8 has a truncated conical shape with a tapered shape in which the outside diameter increases from the top to the bottom. As shown in FIGS. 12 to 14, the outdoor suction port 8 is an annular outdoor suction port flange that extends from the outer peripheral surface 8a of the outdoor suction port 8 in a direction along a plane perpendicular to the central axis 8c. 40 on the outer peripheral surface 8a near the lower end. That is, the outdoor side suction port flange 40 extends in a direction perpendicular to the central axis 8c of the outdoor side suction port 8 and projects in an annular shape.

As shown in FIGS. 12 to 15, the outdoor side suction port flange 40 has a plurality of flange protrusions 41 that are dispersedly arranged on the annular outer peripheral portion 40a. That is, the plurality of flange convex portions 41 are provided at positions spaced apart from each other in the outer circumferential direction of the outer circumferential portion 40 a on the outer circumferential portion 40 a of the annular outdoor suction port flange 40 . In the first embodiment, the outdoor suction port flange 40 has four flange convex portions 41 on the annular outer peripheral portion 40a. The four flange convex portions 41 are provided at positions rotated by 90 degrees around the central axis 8c in the outer peripheral direction of the outer peripheral portion 40a within a plane perpendicular to the central axis 8c of the outdoor side suction port 8. ing. The outdoor side suction port flange 40 and the plurality of flange convex portions 41 are integrally formed with the outdoor side suction port 8.

The outdoor side suction port flange 40 and the flange convex portion 41 are sandwiched and fixed between the top plate 1a and the inner structure 42 via a cushioning material 44, which will be described later. That is, the outdoor side suction port flange 40 and the flange convex portion 41 are housed and fixed between the top plate 1a and the inner structure 42. The outdoor side suction port flange 40 and the flange convex portion 41 are part of the outdoor side suction port 8 that is housed between the top plate 1a and the inner structure 42 in order to attach the outdoor side suction port 8 to the top plate 1a. This is a certain attachment part, and is a part to be held between the top plate 1a and the inner structure 42.

The inner structure 42 has a circular through hole 42 a that communicates with the air supply air path 23 that is an air path provided inside the housing 1 . As shown in FIGS. 13 and 14, the inner structure 42 includes a first storage portion 42b that stores the outdoor suction port flange 40, a second storage portion 42c that stores the flange convex portion 41, and a cushioning material 44. It has a third storage part 42d at the upper part of the inner circumferential surface. The second storage portion 42c is configured as a recessed portion in which the outer peripheral portion of the first storage portion 42b is partially expanded inside the inner structure 42. Therefore, the second storage portion 42c that stores the flange convex portion 41 can be referred to as an inner structure recess.

The first storage portion 42b has a first support surface 42e that is a surface that contacts the outdoor side suction port flange 40 and supports the outdoor side suction port flange 40. The second storage portion 42c has a second support surface 42f that contacts the flange convex portion 41 and supports the flange convex portion 41, as shown in FIG. The third storage portion 42d has a third support surface 42g that contacts the cushioning material 44 and supports the cushioning material 44, as shown in FIG.

The outdoor side suction port flange 40 and the flange convex portion 41 and the inner structure 42 have a positional relationship in which they have a contact surface. That is, as shown in FIG. 13, the lower surface 40b of the outdoor suction port flange 40 is supported by the first support surface 42e of the inner structure 42 and is in contact with the first support surface 42e. The lower surface 41a of the flange convex portion 41 is supported by the second support surface 42f of the inner structure 42 and is in contact with the second support surface 42f. Further, the outdoor side suction port flange 40 and the flange convex portion 41 and the top plate 1a have a positional relationship in which they do not have a contact surface.

In the heat exchange type ventilation device 100, the opening 1aa of the top plate 1a and the outdoor side suction port 8 do not have a contact surface, and the outdoor side suction port flange 40 and the flange convex portion 41, and the top plate 1a, It has no contact surface. Thereby, in the heat exchange type ventilation device 100, the vibration of the duct 27a is not transmitted to the housing 1 via the outdoor side suction port 8, which is a duct connection port. As a result, the casing 1 of the heat exchange type ventilation device 100 and the internal components of the casing 1 do not vibrate due to the vibration transmitted from the duct 27a to the casing 1, and the vibration transmitted from the duct 27a to the casing 1 It is possible to prevent the occurrence of abnormal noise and failure of the heat exchange type ventilation device 100 due to the above.

Furthermore, in the heat exchange type ventilation device 100, vibrations of the heat exchange type ventilation device 100 are not transmitted to the duct 27a via the outdoor side suction port 8, which is a duct connection port. Thereby, the duct 27a does not vibrate due to the vibration transmitted from the housing 1 to the duct 27a, and it is possible to prevent the generation of abnormal noise due to the vibration transmitted from the housing 1 to the duct 27a.

The cushioning material 44 is provided between the flange protrusion 41, the outdoor suction port flange 40, and the top plate 1a in order to prevent the outdoor suction port flange 40 and the flange protrusion 41 from directly interfering with the top plate 1a. This is a part placed in an area including between. The cushioning material 44 is formed in an annular sheet shape and is disposed outside the outer circumferential surface 8a of the outdoor suction port 8. As shown in FIGS. 12 and 13, the cushioning material 44 connects the inner structure 42, the flange convex portion 41, and the outdoor air inlet flange in a plane perpendicular to the central axis 8c of the outdoor air inlet 8. It is arranged in a positional relationship overlapping with 40.

Further, the cushioning material 44 is in contact with the top plate 1a. That is, as shown in FIG. 13, the upper surface 44a of the cushioning material 44 is in contact with the lower surface 1ab of the top plate 1a. Further, the cushioning material 44 is in contact with the inner structure 42 , the flange convex portion 41 , and the outdoor side suction port flange 40 . That is, as shown in FIG. 13, the lower surface 44b of the cushioning material 44 is in contact with the third support surface 42g of the inner structure 42, the upper surface 41b of the flange convex portion 41, and the upper surface 40c of the outdoor side suction port flange 40. There is.

The inner structure 42 and the cushioning material 44 are made of an elastic material. Here, having elasticity means that the elasticity is greater than at least the outdoor side suction port flange 40, that is, the elasticity is greater than at least the material that constitutes the outdoor side suction port 8. Here, having elasticity can be translated as having greater elasticity than the outdoor side suction port flange 40.

When the inner structure 42 is made of an elastic material, a vertical load acts on the outdoor suction port 8 and a vertical load acts on the outdoor suction port flange 40 and the flange convex portion 41. In addition, the vertical load applied from the outdoor side suction port flange 40 and the flange convex portion 41 to the inner structure 42 can be alleviated by the action of the elastic material. As a result, in the heat exchange type ventilation device 100, it is possible to suppress damage to the inner structure 42 due to vertical loads applied to the inner structure 42 from the outdoor side suction port flange 40 and the flange convex portion 41. can.

Since the cushioning material 44 is made of an elastic material, when a vertical load acts on the outdoor side suction port 8 and a vertical load acts on the outdoor side suction port flange 40 and the flange convex portion 41. The vertical load applied from the outdoor suction port flange 40 and the flange convex portion 41 to the cushioning material 44 can be alleviated by the action of the elastic material. Thereby, in the heat exchange type ventilation device 100, it is possible to suppress damage to the cushioning material 44 due to vertical loads applied to the cushioning material 44 from the outdoor side suction port flange 40 and the flange convex portion 41.

The inner structure 42 and the cushioning material 44 are preferably made of a foam material that has both elasticity and heat insulation properties. An example of a foam material that is both elastic and insulating is Styrofoam. Having heat insulating properties means that the heat transfer characteristics are smaller than at least those of the outdoor side suction port flange 40, that is, the heat transfer characteristics are smaller than at least the material forming the outdoor side suction port 8. In this case, having a heat insulating property can be interpreted as having a heat insulating property higher than that of the outdoor side suction port flange 40.

Since the inner structure 42 is made of a material having heat insulating properties, heat conduction from the outdoor side suction port flange 40 and the flange convex portion 41 to the top plate 1a via the inner structure 42 can be suppressed. As a result, when air at a low outside temperature is taken into the housing 1 from the outdoor side suction port 8, air is transferred from the outdoor side suction port flange 40 and the flange convex portion 41 to the top plate 1a via the inner structure 42. Due to heat conduction, the temperature of the top plate 1a becomes lower than the dew point temperature, and it is possible to suppress dew condensation on the casing 1 including the top plate 1a.

Since the buffer material 44 is made of a material having heat insulating properties, it is possible to suppress heat conduction from the outdoor side suction port flange 40 and the flange convex portion 41 to the top plate 1a via the buffer material 44. As a result, when air with a low outside temperature is taken into the housing 1 from the outdoor suction port 8, heat is transferred from the outdoor suction port flange 40 and the flange convex portion 41 to the top plate 1a via the buffer material 44. Due to conduction, the temperature of the top plate 1a becomes lower than the dew point temperature, and it is possible to suppress dew condensation on the casing 1 including the top plate 1a.

Further, the inner structure 42 may be made of styrofoam, and the cushioning material 44 may be made of a urethane foam. Urethane foam materials have advantages over styrofoam, such as higher heat insulation, less condensation, and ease of shaping into a desired shape. Therefore, by using a urethane foam material for the cushioning material 44, when air at a low outside temperature is taken into the housing 1 from the outdoor side suction port 8, the outdoor side suction port flange 40 and the flange convex portion 41 It is possible to further suppress dew condensation on the casing 1 including the top plate 1a due to heat conduction from the top plate 1a to the top plate 1a, which causes the top plate 1a to become below the dew point temperature.

A plurality of the above-mentioned second storage parts 42c, that is, inner structure recesses, are arranged in a dispersed manner on the annular inner peripheral surface 42h facing the outdoor side suction port flange 40 in the first storage part 42b. That is, the plurality of second storage portions 42c are provided at positions corresponding to the flange convex portions 41 on the annular inner peripheral surface 42h of the first storage portion 42b while being spaced apart in the circumferential direction of the inner peripheral surface 42h. ing. In the first embodiment, the inner structure 42 has four second storage sections 42c. The four second storage portions 42c are arranged at 90 degrees centering around the central axis 8c in the circumferential direction of the inner circumferential surface 42h of the first storage portion 42b in a plane perpendicular to the central axis 8c of the outdoor side suction port 8. The position is rotated by 1°.

The flange convex portion 41 of the outdoor side suction port 8 and the second storage portion 42c of the inner structure 42 have shapes that correspond to each other. As shown in FIGS. 14 and 15, the flange protrusion 41 and the second storage part 42c are connected to each other by fitting the flange protrusion 41 and the second storage part 42c together. The configuration is such that the flange convex portion 41 can be fixed at the position of the second storage portion 42c. As a result, in the heat exchange type ventilation device 100, when the torque in the rotational direction along the outer circumferential direction of the annular outer peripheral portion 40a is applied to the outdoor side suction port 8, the outdoor side suction port 8 rotates in the rotational direction. This provides a detent effect that prevents this from happening. That is, in the heat exchange type ventilation device 100, the flange convex portion 41 fits into the second storage portion 42c, so that rotation about the axis of the cylindrical shape of the outdoor side suction port 8 is restricted.

Here, from the viewpoint of providing the second storage section 42c in the inner structure 42, it is preferable to use a foamed material such as styrene foam having elasticity and heat insulating properties as the material of the inner structure 42. A foamed material such as styrofoam is suitable as a material for the inner structure 42 because it is easy to create a shape and the second storage portion 42c can be easily formed.

As shown in FIGS. 12 and 13, the outdoor suction port 8 is a projection extending downward from the outdoor suction port flange 40 in the height direction of the housing 1 in a direction perpendicular to the extending direction of the flange convex portion 41. A flange protrusion 46 is provided. The flange protrusion 46 is formed in an annular shape centered on the central axis 8c of the outdoor suction port 8. A direction perpendicular to the extending direction of the flange convex portion 41 is a direction along the central axis 8c of the outdoor suction port 8.

On the other hand, the inner structure 42 has a stepped portion 47 which is a recessed portion having an inner circumferential surface and a bottom surface having a shape corresponding to the outer shape of the flange protrusion 46 below the first storage portion 42b on the inner circumferential surface of the through hole 42a. is provided.

In the first embodiment, the bottom surface 47a of the stepped portion 47 has a shape along the lower end 46a of the flange protrusion 46, and has an annular shape coaxial with the circular shape of the through hole 42a of the inner structure 42. has. The height of the bottom surface 47a of the stepped portion 47 is slightly lower than the lower end 46a of the flange protrusion 46. The lower end 46a of the flange protrusion 46 can be referred to as the lower end of the outdoor suction port 8.

Furthermore, the inner peripheral surface 47b of the stepped portion 47 has a shape that follows the outer peripheral shape of the flange protrusion 46, and has a circular shape coaxial with the circular shape of the through hole 42a of the inner structure 42. The diameter of the inner circumferential surface 47b of the stepped portion 47 is slightly larger than the outer shape of the flange protrusion 46.

The flange protrusion 46 is fitted into the stepped portion 47. In normal times, the flange protrusion 46 is not in contact with the bottom surface 47a of the stepped portion 47 and the inner circumferential surface 47b of the stepped portion 47. Therefore, in normal times, the outer corner 46b of the lower end 46a of the flange protrusion 46 is not in contact with the bottom surface 47a of the stepped portion 47 and the inner peripheral surface 47b of the stepped portion 47.

In the heat exchange type ventilation device 100, the outer shape of the flange protrusion 46 and the shape of the inner circumferential surface 47b of the stepped portion 47 are the same as the outer circumferential surface of the outdoor suction port 8 in the in-plane direction of the plane perpendicular to the central axis 8c. It is adapted to the shape of 8a. Thereby, in the heat exchange type ventilation device 100, when a downward load is applied to the outdoor suction port 8, the flange protrusion portion 46 and the stepped portion 47 can be brought into line contact. The shape of the outer circumferential surface 8a of the outdoor suction port 8 in the in-plane direction of the plane perpendicular to the central axis 8c can be said to be the shape of the outer circumferential surface of the duct connection port. Therefore, the outer shape of the flange protrusion 46 and the shape of the inner circumferential surface 47b of the stepped portion 47 are shaped in accordance with the shape of the outer circumferential surface of the duct connection port.

That is, if the shape of the outer circumferential surface 8a of the outdoor suction port 8 in the in-plane direction perpendicular to the central axis 8c is circular, the outer shape of the flange protrusion 46 and the shape of the inner circumferential surface 47b of the stepped portion 47 are arranged in a circular shape along the shape of the outer circumferential surface 8a of the outdoor suction port 8 in the in-plane direction of a plane perpendicular to the central axis 8c. As a result, when a downward load is applied to the outdoor suction port 8, the outer corner 46b of the lower end 46a of the flange projection 46, which is a part of the flange projection 46, and the inner periphery of the stepped portion 47 The surface 47b is in line contact.

Further, if the shape of the outer circumferential surface 8a of the outdoor suction port 8 in the in-plane direction perpendicular to the central axis 8c is rectangular, the outer shape of the flange protrusion 46 and the shape of the inner circumferential surface 47b of the stepped portion 47 are made into a rectangular shape along the shape of the outer circumferential surface 8a of the outdoor suction port 8 in the in-plane direction of a plane perpendicular to the central axis 8c. As a result, when a downward load is applied to the outdoor suction port 8, the outer corner 46b of the lower end 46a of the flange projection 46, which is a part of the flange projection 46, and the inner periphery of the stepped portion 47 The surface 47b is in line contact.

As a result, in the heat exchange type ventilation device 100, when a downward load is applied to the outdoor suction port 8, the outer peripheral side corner of the lower end 46a of the flange protrusion 46, which is a part of the flange protrusion 46, The line contact between the portion 46b and the inner circumferential surface 47b of the stepped portion 47 can suppress downward movement of the outdoor suction port 8.

FIG. 17 is a sectional view showing a modification of the mounting structure of the outdoor side suction port 8 shown in FIG. 12, and a plan view corresponding to FIG. 13. FIG. 18 is a sectional view showing a modification of the mounting structure of the outdoor suction port 8 shown in FIG. 12, and a plan view corresponding to FIG. 16.

In the cushioning material 44, a cushioning material recess 44c that accommodates the outdoor side suction port flange 40 and the flange projection 41 may be provided at a position corresponding to the flange projection 41. In this case, at least the top surface 41b of the flange convex portion 41 is located above the bottom surface 44b of the cushioning material 44 and below the top surface 44a of the cushioning material 44. Note that the upper surface 40c of the outdoor suction port flange 40 adjacent to the upper surface 41b of the flange convex portion 41 is also positioned above the lower surface 44b of the cushioning material 44 in the same way as the upper surface 41b of the flange convex portion 41. There may also be a position below the upper surface 44a of the buffer material 44. FIG. 17 shows a state in which the upper surface 41b of the flange convex portion 41 and the upper surface 40c of the outdoor suction port flange 40 are positioned above the lower surface 44b of the cushioning material 44 in the vertical direction.

In the direction perpendicular to the extending direction of the flange convex portion 41, the cushioning material recess 44c of the cushioning material 44 is shaped to accommodate the flange convex portion 41 of the outdoor side suction port 8. A direction perpendicular to the extending direction of the flange convex portion 41 is a direction along the central axis 8c of the outdoor suction port 8. The cushioning material recess 44c of the cushioning material 44 and the flange projection 41 of the outdoor suction port 8 are, as shown in FIG. By fitting them together, the flange protrusion 41 can be fixed at the position of the cushioning material recess 44c corresponding to the flange protrusion 41.

As a result, in the heat exchange type ventilation device 100, when the torque in the rotational direction along the outer circumferential direction of the annular outer peripheral portion 40a is applied to the outdoor side suction port 8, the outdoor side suction port 8 rotates in the rotational direction. This provides a detent effect that prevents this from happening. That is, in the heat exchange type ventilation device 100, the rotation of the outdoor suction port 8 about the cylindrical axis is restricted by fitting the flange convex portion 41 into the buffer material recess 44c.

Here, from the viewpoint of providing the cushioning material recess 44c in the cushioning material 44, it is preferable to use a foamed material such as styrene foam having elasticity and heat insulating properties as the material of the cushioning material 44. A foamed material such as styrofoam is suitable as a material for the cushioning material 44 because it is easy to create a shape and the cushioning material recess 44c can be easily formed.

FIG. 19 is a sectional view showing a modification of the mounting structure of the outdoor side suction port 8 shown in FIG. 12, and a plan view corresponding to FIG. 16. In the configuration of the attachment structure of the outdoor side suction port 8 shown in FIG. 19, the cushioning material 44 is arranged only on the inner structure 42. As shown in FIG. In this case, the outdoor side suction port flange 40 and the flange convex portion 41 of the outdoor side suction port 8 are housed between the top plate 1a and the inner structure 42. The outdoor suction port flange 40 and the flange convex portion 41 are positioned below the upper surface 44a of the cushioning material 44 in the vertical direction. Also in this configuration, the outdoor side suction port flange 40 and the flange convex portion 41 and the top plate 1a have a positional relationship in which they do not have a contact surface.

However, the outdoor side suction port flange 40 and the flange convex portion 41 of the outdoor side suction port 8 are not sandwiched between the top plate 1a and the inner structure 42 via the cushioning material 44. Therefore, the outdoor side suction port 8 is attached to the case 1 without being completely fixed to the case 1, but the outdoor side suction port flange 40 and the flange convex portion 41 of the outdoor side suction port 8 are attached to the top of the case. Since it is housed between the plate 1a and the inner structure 42, it will not come off from the housing 1.

In the above modification, the buffer material 44 is provided at a position where the buffer material recess 44c corresponds to the flange protrusion 41. In the above modification, the cushioning material recess 44c accommodates the flange protrusion 41 in a direction perpendicular to the extending direction of the flange protrusion 41. In this case, at least the top surface 41b of the flange convex portion 41 is located above the bottom surface 44b of the cushioning material 44 and below the top surface 44a of the cushioning material 44.

Note that the upper surface 40c of the outdoor suction port flange 40 adjacent to the upper surface 41b of the flange convex portion 41 is also positioned above the lower surface 44b of the cushioning material 44 in the same way as the upper surface 41b of the flange convex portion 41. There may also be a position below the upper surface 44a of the buffer material 44.

In the direction perpendicular to the extending direction of the flange convex portion 41, the cushioning material recess 44c of the cushioning material 44 is shaped to accommodate the flange convex portion 41 of the outdoor side suction port 8. A direction perpendicular to the extending direction of the flange convex portion 41 is a direction along the central axis 8c of the outdoor suction port 8. The cushioning material recess 44c of the cushioning material 44 and the flange projection 41 of the outdoor suction port 8 are, as shown in FIG. By fitting them together, the flange protrusion 41 can be fixed at the position of the cushioning material recess 44c corresponding to the flange protrusion 41.

As a result, in the above modification, when a torque in the rotational direction along the outer circumferential direction of the annular outer peripheral portion 40a is applied to the outdoor suction port 8, the outdoor suction port 8 rotates in the rotational direction. This provides a detent effect that prevents rotation. That is, in the above modification, the rotation of the outdoor suction port 8 about the cylindrical axis is restricted by fitting the flange convex portion 41 into the buffer material recess 44c.

Also in the above modification, the opening 1aa of the top plate 1a and the outdoor suction port 8 do not have a contact surface, and the outdoor suction port flange 40 and the flange convex portion 41 are in contact with the top plate 1a. It has no surface. This prevents the vibration of the duct 27a from being transmitted to the housing 1 via the outdoor suction port 8, which is the duct connection port. As a result, the casing 1 of the heat exchange type ventilation device 100 and the internal components of the casing 1 do not vibrate due to the vibration transmitted from the duct 27a to the casing 1, and the vibration transmitted from the duct 27a to the casing 1 It is possible to prevent the occurrence of abnormal noise and failure of the heat exchange type ventilation device 100 due to the above.

Further, in the above modification, the vibration of the heat exchange type ventilation device 100 is not transmitted to the duct 27a via the outdoor suction port 8, which is the duct connection port. Thereby, the duct 27a does not vibrate due to the vibration transmitted from the housing 1 to the duct 27a, and it is possible to prevent the generation of abnormal noise due to the vibration transmitted from the housing 1 to the duct 27a .

Above, the mounting structure of the duct connection port in the heat exchange type ventilation device 100 according to the first embodiment has been explained using the outdoor side suction port 8 as an example. The opening 9, the indoor air outlet 10, and the outdoor air outlet 11 are all fixed to the top plate 1a of the housing 1 by the same mounting structure as the outdoor air inlet 8.

In addition, in the mounting structure of the indoor suction port 9 to which the above-described duct connection port mounting structure is applied, the inner structure 42 communicates with the exhaust air path 24, which is an air path provided inside the housing 1. It has a through hole. Further, in the mounting structure of the indoor air outlet 10 to which the above-described duct connection port mounting structure is applied, the inner structure 42 communicates with the air supply air path 23 which is an air path provided inside the housing 1. It has a through hole. Furthermore, in the mounting structure of the outdoor outlet 11 to which the above-described duct connection port mounting structure is applied, the inner structure 42 communicates with the exhaust air passage 24 which is an air passage provided inside the housing 1. It has a through hole.

As described above, the heat exchange type ventilation device 100 according to the first embodiment has an annular outdoor side that extends from the outer circumferential surface 8a of the outdoor side suction port 8 in a direction along a plane perpendicular to the central axis 8c. The suction port flange 40 and the flange convex portion 41 are housed and fixed between the top plate 1a and the inner structure 42. Further, the outdoor side suction port flange 40 and the flange convex portion 41 and the inner structure 42 have a positional relationship in which they have a contact surface. Further, the outdoor side suction port flange 40 and the flange convex portion 41 and the top plate 1a have a positional relationship in which they do not have a contact surface. With the above-described configuration, in the heat exchange type ventilation device 100, vertical movement of the outdoor side suction port flange 40 and the flange convex portion 41 can be suppressed.

Further, in the heat exchange type ventilation device 100, a cushioning material 44 is arranged in a region including between the outdoor side suction port flange 40 and the flange convex portion 41, and the top plate 1a. The cushioning material 44 is arranged in a positional relationship that overlaps the inner structure 42, the outdoor side suction port flange 40, and the flange convex portion 41 in a plane perpendicular to the central axis 8c of the outdoor side suction port 8. There is. Further, the cushioning material 44 is in contact with the top plate 1a.

With the above-described configuration, in the heat exchange type ventilation device 100, the outdoor side suction port flange 40 and the flange convex portion 41 can be sandwiched between the top plate 1a and the inner structure 42 via the cushioning material 44. I can do it. In the heat exchange type ventilation device 100, the cushioning material 44 can prevent the outdoor side suction port flange 40 and the flange convex portion 41 from directly interfering with each other, and the outdoor side suction port flange 40 and the top plate 1a can be prevented from directly interfering with each other. Also, it is possible to reliably maintain a state in which the flange convex portion 41 and the top plate 1a do not have a contact surface.

In addition, in the heat exchange type ventilation device 100, the cushioning material 44 is made of an elastic material, and the inner structure 42 is also made of an elastic material, so that the outdoor suction port flange 40 and The flange convex portion 41 can be inserted . As a result, in the heat exchange type ventilation device 100, when a vertical load is applied to the outdoor side suction port 8, the vertical load applied from the outdoor side suction port 8 to the cushioning material 44 and the inner structure 42 is elastically absorbed. It is possible to suppress damage to the cushioning material 44 and the inner structure 42 by the action of the material having the above-mentioned properties.

In addition, in the heat exchange type ventilation device 100, the outdoor side suction port 8, which is a duct connection port for connecting the duct 27a for taking air from the outdoors into the room, is a part of the outdoor side suction port 8, which is a part of the outdoor side suction port 8. The outer suction port flange 40 and the flange convex portion 41 are sandwiched between the inner structure 42 and the top plate 1a with a buffer material 44 interposed therebetween. That is, the outdoor side suction port 8 is fixed to the top plate 1a forming the outer shell of the housing 1 without using fastening parts such as screws.

With the above-described configuration, in the heat exchange type ventilation device 100, vibrations of the duct 27a are not transmitted to the housing 1 via the outdoor side suction port 8, which is a duct connection port. As a result, the casing 1 of the heat exchange type ventilation device 100 and the internal components of the casing 1 do not vibrate due to the vibration transmitted from the duct 27a to the casing 1, and the vibration transmitted from the duct 27a to the casing 1 It is possible to prevent the occurrence of abnormal noise and failure of the heat exchange type ventilation device 100 due to the above.

Further, with the above-described configuration, in the heat exchange type ventilation device 100, vibrations of the heat exchange type ventilation device 100 are not transmitted to the duct 27a via the outdoor side suction port 8, which is a duct connection port. Thereby, the duct 27a does not vibrate due to the vibration transmitted from the housing 1 to the duct 27a, and it is possible to prevent the generation of abnormal noise due to the vibration transmitted from the housing 1 to the duct 27a.

When the outdoor suction port 8, which is a duct connection port, is directly fixed to the top plate 1a constituting the outer shell of the casing 1 via fastening parts, the outside air at a low temperature can flow from the outdoor suction port 8 into the casing 1. When taking in air, the outdoor side suction port 8 and the fastening parts form a thermal bridge, and dew condensation occurs on the outer shell of the casing 1.

On the other hand, in the heat exchange type ventilation device 100, the outdoor side suction port 8 and the top plate 1a are fixed without using fastening parts, and the outdoor side suction port 8 and the top plate 1a are not directly fixed. As a result, in the heat exchange type ventilation device 100, it is possible to avoid forming a thermal bridge between the duct connection port and the fastening parts, and when air at a low outside temperature is taken into the housing 1 from the outdoor suction port 8. It is possible to suppress the occurrence of dew condensation on the outer shell of the casing 1 due to a thermal bridge via the outdoor side suction port 8.

Further, in the heat exchange type ventilation device 100, it is preferable to use a foam material such as expanded polystyrene having both elasticity and heat insulation properties for the inner structure 42. As a result, in the heat exchange type ventilation device 100, even if the top plate 1a constituting the outer shell of the casing 1 and the inner structure 42 are in contact with each other, a low outside air temperature is allowed to flow from the outdoor suction port 8 into the casing 1. When taking in the air, it is possible to prevent the top plate 1a from becoming below the dew point temperature and condensing due to heat conduction from the inner structure 42 to the top plate 1a.

In addition, in the heat exchange type ventilation device 100, by fitting the flange convex portion 41 and the second storage portion 42c, torque in the rotational direction along the outer circumferential direction of the annular outer circumferential portion 40a is applied to the outdoor suction port 8. When the outdoor suction port 8 is engaged, a detent effect is obtained that prevents the outdoor suction port 8 from rotating in the rotational direction.

In addition, in the heat exchange type ventilation device 100, by fitting the flange convex portion 41 and the buffer material recess 44c, torque in the rotational direction along the outer circumferential direction of the annular outer circumferential portion 40a is applied to the outdoor suction port 8. When the outdoor suction port 8 is rotated in the rotation direction, a detent effect is obtained.

Moreover, the external shape of the outdoor suction port 8 is not limited to a truncated cone shape. The outdoor suction port 8 may have a cylindrical shape to which the duct 27a can be connected. The external shape of the outdoor suction port 8 may be a cylindrical shape, a rectangular tube shape, or the like, or a shape with a step.

Further, in the above description, the heat exchange type ventilation device 100 that performs ventilation while exchanging heat between the air from outside and the air from inside the room was explained as an example, but the mounting structure of the duct connection port described above is It can also be used for the duct connection port of a ventilation device that only performs exhaust gas and the duct connection port of a ventilation device that only performs exhaust gas. That is, the above-described mounting structure for the duct connection port can be applied to a duct connection port in a ventilator that has at least one of the functions of taking in air from the outdoors into the room or discharging air from the room to the outside.

The above-mentioned effects can also be obtained at the indoor suction port 9, the indoor air outlet 10, and the outdoor air outlet 11, which are the duct attachment ports other than the outdoor air suction port 8 in the heat exchange type ventilation device 100. .

Therefore, according to the heat exchange type ventilation device 100 according to the first embodiment, the vibration of the duct is transmitted to the heat exchange type ventilation device 100 through the duct connection port, and the heat exchange type ventilation device 100 vibrates. can be restrained from doing so. Further, according to the heat exchange type ventilation device 100, it is possible to suppress vibration of the duct due to the vibration of the heat exchange type ventilation device 100 being transmitted to the duct via the duct connection port. Thereby, in the heat exchange type ventilation device 100, it is possible to suppress vibrations from being transmitted between the duct and the heat exchange type ventilation device 100 via the duct connection port that connects the duct and the heat exchange type ventilation device 100. , this effect is produced.

The configuration shown in the above embodiments is an example, and it is possible to combine it with another known technology, and a part of the configuration can be omitted or changed without departing from the gist. It is possible.

1 Housing, 1a Top plate, 1aa Opening, 1ab, 40b, 41a, 44b Bottom surface, 1b Bottom plate, 1c Front plate, 1d Back plate, 1e Left side plate, 1f Right side plate, 2 Heat exchange element, 2a Partition member, 2b Spacing member, 3 Air supply blower, 4 Exhaust air blower, 5 Outside air filter, 6 Exhaust filter, 7 Air supply filter, 8 Outdoor side suction port, 8c Central shaft, 8a Outer peripheral surface, 9 Indoor side suction port, 10 Chamber Inner air outlet, 11 Outdoor air outlet, 12 Drain pan, 12a Pedestal, 13a Exhaust side drain port, 13b Air supply side drain port, 14 Operation unit, 15 Control board, 15a First board, 15b Second board, 15c First Board case, 15d Second board case, 15f Board lid, 16 Board opening, 17 Outside air filter opening, 18 Exhaust filter opening, 19 Supply air filter opening, 20 Outside air filter lid, 21 Exhaust Filter lid, 22 Air supply filter lid, 23 Air supply air path, 24 Exhaust air path, 25 Heat insulation parts, 27a, 27b, 27c, 27d duct, 28 Design material, 29 Space, 30 Wall surface, 31 Ceiling surface, 40 Room Outer suction port flange, 40a outer periphery, 40c, 41b, 44a upper surface, 41 flange convex portion, 42 inner structure, 42a through hole, 42b first storage section, 42c second storage section, 42d third storage section, 42e th 1 support surface, 42f second support surface, 42g third support surface, 42h , 47b inner peripheral surface, 44 cushioning material, 44c cushioning material recess, 46 flange protrusion, 46a lower end, 46b corner, 47 step, 47a Bottom, 100 Heat Exchange Ventilator, C Centerline.

Claims (7)

A casing that constitutes the outer shell;
an inner structure disposed inside the housing and having a through hole communicating with an air passage provided inside the housing;
a cylindrical duct connection port that communicates with the air path and is provided on the outer surface of the casing, to which a duct that communicates between the inside of the casing and the outside of the casing is connected;
Equipped with
In the duct connection port, a mounting portion that is a part of the duct connection port is sandwiched between an outer shell component that constitutes the outer surface and the inner structure,
The mounting portion is a flange that is sandwiched between the outer part of the casing and the inner structure via a cushioning material and protrudes from the outer peripheral surface of the duct connection port,
The flange includes a flange convex portion protruding from an outer peripheral portion of the flange,
The cushioning material includes a cushioning material recess that accommodates the flange convex portion,
Rotation of the duct connection port about the axis of the cylindrical shape of the duct connection port is restricted by fitting the flange convex portion into the buffer material recess;
A ventilation system featuring: the inner structure and the cushioning material are made of a material having greater elasticity than the attachment part;
The ventilation device according to claim 1 , characterized in that: the inner structure and the cushioning material are made of a material having higher heat insulation properties than the attachment part;
The ventilation device according to claim 1 or 2 , characterized in that: the inner structure and the cushioning material are made of foamed material;
The ventilation device according to claim 3 , characterized in that: the inner structure is made of styrofoam,
The cushioning material is made of a urethane foam material;
The ventilation device according to claim 4 , characterized in that: A casing that constitutes the outer shell;
an inner structure disposed inside the housing and having a through hole communicating with an air passage provided inside the housing;
a cylindrical duct connection port that communicates with the air path and is provided on the outer surface of the casing, to which a duct that communicates between the inside of the casing and the outside of the casing is connected;
Equipped with
In the duct connection port, a mounting portion that is a part of the duct connection port is sandwiched between an outer shell component that constitutes the outer surface and the inner structure,
The mounting portion is a flange protruding from the outer peripheral surface of the duct connection port,
The flange includes a flange convex portion protruding from an outer peripheral portion of the flange,
The inner structure includes an inner structure recess that accommodates the flange protrusion,
Rotation of the duct connection port about the axis of the cylindrical shape of the duct connection port is restricted by fitting the flange convex portion into the inner structure recess;
A ventilation system featuring: A casing that constitutes the outer shell;
an inner structure disposed inside the housing and having a through hole communicating with an air passage provided inside the housing;
a cylindrical duct connection port that communicates with the air path and is provided on the outer surface of the casing, to which a duct that communicates between the inside of the casing and the outside of the casing is connected;
Equipped with
In the duct connection port, a mounting portion that is a part of the duct connection port is sandwiched between an outer shell component that constitutes the outer surface and the inner structure,
The duct connection port has a protrusion spaced apart from the inner peripheral surface of the through hole below the attachment part in the height direction of the casing,
The outer shape of the protrusion and the inner peripheral surface of the through hole are shaped in accordance with the outer peripheral surface of the duct connection port,
When a downward load in the height direction of the casing is applied to the duct connection port, an outer corner of the lower end of the protrusion comes into line contact with the inner circumferential surface of the through hole;
A ventilation system featuring:

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