CN217685621U - Air interchanger - Google Patents

Abstract

A ventilator installed outdoors can suppress the intrusion of water droplets. The ventilator is a ventilator (1) installed outdoors and performing indoor ventilation via a duct (60), and comprises: an air supply fan (42); and a case (2) that houses the air supply fan (42) and is formed with an outside air introduction port (5) through which outside air is introduced, the case (2) including: a top plate (2 f) that constitutes the upper surface of the housing (2); a side plate (2 a) that constitutes a part of the side surface of the housing (2) and that can be attached to the housing (2) or detached from the housing (2); and a sealing member (11) which is attached to the back surface of the top plate (2 f) at a position where the top plate (2 f) and the side plate (2 a) intersect, and which is brought into contact with or pressed against the upper end portion of the side plate (2 a), thereby suppressing the intrusion of water droplets from between the top plate (2 f) and the upper end portion.

Description

Air interchanger

Technical Field

The present disclosure relates to an outdoor ventilation apparatus.

Background

As a ventilation device for indoor air, a type installed on the back of a ceiling is known (for example, see patent document 1). The ventilator communicates with the outside of the room through a duct, thereby allowing exhaust of indoor air and supply of outdoor air into the room.

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open publication No. 2002-22235.

SUMMERY OF THE UTILITY MODEL

In recent years, the importance of ventilation in buildings has increased from the viewpoint of public health. However, it is difficult to install a ventilator of the type installed on the back of the ceiling in a conventional building. In this regard, it is easy to install the outdoor installation type ventilator which communicates with the indoor space through a duct which penetrates the outer wall and is exposed to the outside. In some cases, the total heat exchanger is built in the ventilator, and in order to replace the total heat exchanger periodically, a structure in which, for example, the side plates are detachable is required. However, the mounting and dismounting structure is prone to generate gaps, and air sometimes enters from unexpected paths. In particular, water droplets brought about by rain may enter the ventilation device from the vicinity of the ceiling together with air.

The purpose of the present disclosure is to suppress the intrusion of water droplets in a ventilation device installed outdoors.

(1) The present disclosure is a ventilation device that is installed outdoors and performs indoor ventilation via a duct, the ventilation device including:

an air supply fan; and a case housing the air supply fan and formed with an external air introduction port through which external air is introduced,

the housing includes:

a top plate constituting an upper surface of the housing;

a side plate that constitutes a part of a side surface of the housing and is attachable to and detachable from the housing; and

and a sealing member attached to a back surface of the top plate at a position where the top plate and the side plate intersect each other, and in a state of being in contact with or compressed against an upper end portion of the side plate, the sealing member suppressing intrusion of water droplets from between the top plate and the upper end portion.

In the ventilator, water droplets can be prevented from entering the ventilator.

(2) In the ventilator according to the above (1), it is preferable that the sealing member is formed of a foam.

In this case, the seal member is easily compressed and has a high restoring force.

(3) In the ventilator according to the above (2), it is preferable that the sealing member is formed of, for example, foam of independent bubbles, and an upper end portion of the side plate is brought into contact with or sunk into the sealing member by attachment of the side plate.

The foam of closed cells is not allowed to pass air or water therethrough, and thus the intrusion of water droplets can be more reliably suppressed.

(4) In the ventilator according to the above (2), it is preferable that the sealing member is formed of, for example, a semi-closed cell or a continuous foamed foam, and the upper end portion of the side plate is sunk in the sealing member to 10% to 70% of the thickness of the sealing member by attaching the side plate.

In the semi-closed cell or continuous foam, the penetration of water droplets can be suppressed by the pressure bonding at the above ratio.

(5) In the ventilator according to any one of (1) to (4), for example, it is preferable that an inner case is provided inside the case, and the air supply fan is provided inside the inner case

Drawings

Fig. 1 is a perspective view of a ventilation device according to an embodiment of the present disclosure.

Fig. 2 is a perspective view of the ventilator main body.

Fig. 3 is a front view schematically showing the inside of the ventilation device.

Fig. 4 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 3.

Fig. 5 is a sectional view taken along line B-B of fig. 3.

Fig. 6 is a perspective view of the total heat exchanger.

Fig. 7 is a perspective view showing a state where the right side plate is detached from the ventilator.

Fig. 8 is a schematic view of a case in a case where a sealing member described later is not used, as a reference drawing, as viewed from the front.

Fig. 9 is a schematic view of the case in the case of using the seal member of the present disclosure, as viewed from the front.

Fig. 10 is a partial sectional view of a portion surrounded by an upper right circle in fig. 9.

(symbol description)

1, a ventilation device; 2, a shell; 2a right side plate; 2b a left side plate; 2c a front side panel; 2d, a rear side plate; 2e a base plate; 2f a top plate; 2g of water outlet; 2h a support part; 2j, hooking; a 2M main body portion; 2r of main return air inlet; 2s main air supply port; 3, a joint part; 4, screws; 5a main outside air introduction port; 6a main exhaust port; 7 feet; 10 a ventilator main body; 11 a sealing member; 13 an inner shell; 13a right side plate; 13b a left side plate; 13c a front side plate; 13d a rear side plate; 13e a base plate; 13f a top plate; 14 auxiliary return air introducing ports; 14a cylinder body; 15 auxiliary exhaust ports; 15a cylinder body; 16 pairs of outside air introduction ports; 17 auxiliary air supply ports; 17a cylinder body; 18 external air introduction chamber; 19 an exhaust chamber; 21a waterproof sheet; 21a, 21b are open; 21c an extension; 22 a partition plate; 24 a protective net; 25. a filter; 26, protecting a net; 27 an electrical component unit; 27a box; 41a total heat exchanger; 41a partition plate; 41b partition plates; 41c an exhaust-side passage; 41d a gas supply side passage; 41e (protruding) portions; 41f a handle; 42 an air supply fan; 43 an exhaust fan; 46 exhaust air passage; 46a upstream side exhaust air passage; 46b downstream side exhaust air passage; 47 air supply passage; 47a upstream side supply air passage; 47b downstream side air supply air passage; 51 dividing the wall; 52 dividing the wall; 60 pipelines; 100 a ventilator; f1 a first air flow; f2 a second air stream; s containing space

Detailed Description

Next, embodiments of the present disclosure will be explained.

(integral construction of ventilator)

Embodiments of the present disclosure will be described in detail below with reference to the drawings.

Fig. 1 is a perspective view of a ventilation device according to an embodiment of the present disclosure.

In the following description, the upper, lower, front, rear, left, and right descriptions are in accordance with the arrows shown together with these terms in fig. 1 to 3. In particular, in fig. 1, a first direction indicated by an arrow X is a left-right direction, a second direction indicated by an arrow Y is a front-rear direction, and a third direction indicated by an arrow Z is a vertical (vertical) direction. However, these descriptions are merely examples, and for example, the first direction X may be replaced with a front-rear direction, and the second direction Y may be replaced with a left-right direction.

The ventilator 1 performs ventilation of the interior of the room by replacing outdoor (outdoor) air with indoor (indoor) air. The ventilator 1 is installed outdoors in the posture shown in fig. 1. The ventilator 1 is connected to the indoor space via a pair of pipes 60. The ventilator 1 has a box-shaped housing 2 formed in a rectangular parallelepiped shape. The ventilator 100 is constituted by the ventilator 1 and the duct 60.

The housing 2 has a bottom plate 2e, a top plate 2f, a right side plate 2a, a left side plate 2b, a front side plate 2c, and a rear side plate 2d. The bottom plate 2e and the top plate 2f are formed in a rectangular shape in plan view and are disposed to face each other with a gap in the vertical direction. The four sides of the bottom plate 2e and the top plate 2f are connected by a left side plate 2b, a right side plate 2a, a front side plate 2c, and a rear side plate 2d, respectively.

The top plate 2f of the casing 2 is provided with a main return air inlet 2r and a main air supply port 2s. The main return air inlet 2r and the main air supply inlet 2s are respectively provided with a joint 3, and one end of the duct 60 is connected to the joint 3. The other end of the duct 60 is connected to the room. Therefore, the main return air inlet 2r and the main air supply outlet 2s communicate with the room through the pair of ducts 60.

The bottom plate 2e of the housing 2 is provided with a pair of legs 7. The ventilation device 1 is installed outdoors by placing the leg 7 on the ground and fixing it with a bolt or the like. The ventilator 1 is not limited to being installed outdoors, and may be installed on a rack mounted on an outer wall of a building, a roof, or the like.

The right side plate 2a of the case 2 is formed with a main outside air introduction port 5. The left side plate 2b of the casing 2 is formed with a main exhaust port 6.

(ventilator main body)

The casing 2 accommodates a ventilator main body 10. The ventilator body 10 of the present embodiment is an indoor ventilator that is conventionally installed on the back surface of a ceiling or a wall surface in a room. The ventilator 1 of the present disclosure is configured as an outdoor-installed ventilator 1 by housing an indoor-installed ventilator in an outdoor-standard case 2. Since the indoor type ventilator is not exposed to rain unlike the outdoor type ventilator, the waterproof property is not considered so much. Therefore, the ventilator 1 of the present disclosure can be installed outdoors by housing an indoor type ventilator in the casing 2 having excellent waterproof property. However, the ventilator 1 of the present disclosure is not limited to an indoor installation type ventilator, and may be an outdoor installation type ventilator.

Fig. 2 is a perspective view of the ventilator main body 10.

The ventilator body 10 has a box-shaped inner case 13 formed in a rectangular parallelepiped shape. The inner case 13 substantially forms a housing space S (see fig. 3) for housing an air supply fan 42, an air discharge fan 43, and a total heat exchanger 41, which will be described later. The inner case 13 has a bottom plate 13e, a top plate 13f, a right side plate 13a, a left side plate 13b, a front side plate 13c, and a rear side plate 13d. The bottom plate 13e and the top plate 13f are formed in a rectangular shape in plan view and are disposed to face each other with a gap therebetween in the vertical direction. The four sides of the bottom plate 13e and the top plate 13f are connected by a left side plate 13b, a right side plate 13a, a front side plate 13c, and a rear side plate 13d, respectively.

An electrical component unit 27 is provided on the upper portion of the right side plate 13 a. The electrical component unit 27 includes a box 27a, and electrical components such as a control board and a terminal block housed in the box 27 a. The electrical component unit 27 may be provided on the other side plates 13b, 13c, 13d.

The top plate 13f of the inner case 13 is formed with a sub return air inlet 14 and a sub air supply port 17. The sub return air intake port 14 and the sub air supply port 17 are provided with tubular bodies 14a and 17a, respectively.

The bottom plate 13e of the inner case 13 constitutes a partition plate that partitions a lower end of a storage space S (fig. 3) for storing the intake fan 42 (fig. 4), the exhaust fan 43 (fig. 5), and the total heat exchanger 41. A sub outside air intake port 16 and a sub exhaust port 15 are formed in the bottom plate 13e of the inner case 13. A cylinder 15a is attached to the sub-exhaust port 15. However, the cylinder 15a may be omitted.

(inner structure of ventilator)

Fig. 3 is a front view schematically showing the inside of the ventilation device. Fig. 4 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 3. Fig. 5 is a sectional view taken along line B-B of fig. 3.

The openings at the front ends of the tubular bodies 14a and 17a attached to the top plate 13f of the inner housing 13 communicate with the main return air intake port 2r and the main air supply port 2s of the housing 2, respectively. Since the electrical component unit 27 is provided on the right side plate 13a of the inner case 13, a space T wider than the space between the other side plates facing each other is formed between the right side plate 13a and the right side plate 2a of the case 2. The interval T may be formed between the other side plates facing each other.

The lower surface of the bottom plate 13e of the inner housing 13 is provided with a waterproof sheet 21. The waterproof sheet 21 is formed by applying a waterproof coating or surface treatment to a metal plate material, for example, and is provided to impart a waterproof property to the lower surface of the bottom plate 13 e. The waterproof sheet 21 covers the entire lower surface of the bottom plate 13 e. The waterproof sheet 21 is formed with an opening 21a communicating with the sub outside air introduction port 16 and an opening 21b communicating with the sub exhaust port 15. The waterproof plate 21 has an extension portion 21c, and the extension portion 21c extends from the bottom plate 13e to the right side plate 2a of the housing 2 and is disposed at the interval T. The extension 21c extends upward from the bottom plate 13e and reaches the right side plate 2a at a position higher than the bottom plate 13 e.

The waterproof sheet 21 has a length in the front-rear direction substantially equal to the distance in the front-rear direction between the front side plate 2c and the rear side plate 2d of the case 2. The waterproof sheet 21 has a length in the left-right direction substantially equal to the distance in the left-right direction between the right side plate 2a and the left side plate 2b of the casing 2. The waterproof sheet 21 vertically partitions a space surrounded by the left side plate 2b, the right side plate 2a, the front side plate 2c, and the rear side plate 2d, and suppresses entry of water into an upper space from a lower space than the waterproof sheet 21. The waterproof sheet 21 may be formed by one member or may be formed by a combination of a plurality of members.

Inside the casing 2, an outside air introducing chamber 18 and an exhaust chamber 19 are formed between a bottom plate (partition plate) 13e of the inner casing 13 and the bottom plate 2e of the casing 2. The outside air introduction chamber 18 communicates with the main outside air introduction port 5 and the sub outside air introduction port 16. The exhaust chamber 19 communicates with the main exhaust port 6 and the sub-exhaust port 15. The upper end of the outside air introducing chamber 18 is also divided by the waterproof sheet 21, and from this point of view, the waterproof sheet 21 also constitutes a dividing sheet.

The outside air introduction chamber 18 and the exhaust chamber 19 are divided into right and left sides by a partition plate 22. Partition plate 22 is disposed with a slight gap from bottom plate 2e of case 2, and allows water to flow on bottom plate 2e between outside air introduction chamber 18 and exhaust chamber 19.

The main return air inlet 2r of the casing 2 and the sub return air inlet 14 of the inner casing 13 are used to introduce air (return air) RA from the room into the casing 2 and the inner casing 13. The main exhaust port 6, the exhaust chamber 19, and the sub exhaust port 15 are used to discharge the return air RA introduced into the casing 2 and the inner casing 13 to the outside as exhaust EA. The main outside air intake port 5, the outside air intake chamber 18, and the sub outside air intake port 16 are used to introduce air (outside air) OA from the outside into the casing 2 and the inner casing 13. The main air supply port 2s and the sub air supply port 17 supply the outside air OA introduced into the casing 2 and the inner casing 13 into the room as supply air SA.

The main outside air intake port 5 extends upward from a lower range than the partitioning plate 13e across the partitioning plate 13e in the right side plate 2a. The waterproof sheet 21 extends from the lower surface of the partitioning sheet 13e to the upper side of the upper end portion of the main outside-air introduction port 5. In contrast, the main exhaust port 6 is formed in the left side plate 2b in a range below the partition plate 13 e. Therefore, the area of the main exhaust port 6 is smaller than that of the main outside-air introduction port 5. However, the main exhaust port 6 may extend upward from a range below the partition plate 13e across the partition plate 13e, similarly to the main outside air intake port 5. Conversely, the main outside air intake port 5 may be formed only in a lower range than the partitioning plate 13 e. As shown in fig. 1 and 3, the main outside air intake port 5 and the main exhaust port 6 are provided with protective nets 24 and 26, respectively. The main outside air introduction port 5 is also provided with a filter 25.

A drain port 2g is formed in the bottom plate 2e of the housing 2. The drain port 2g is disposed in the exhaust chamber 19. The bottom plate 2e is formed with a lowest inclination of the drain port 2g. Therefore, the water present on the bottom plate 2e flows toward the drain port 2g and is discharged from the drain port 2g to the outside of the housing 2.

The total heat exchanger 41, the air supply fan 42, and the air discharge fan 43 are disposed inside the inner case 13. Inside the casing 2 and the inner casing 13, the return air RA taken in from the main return air inlet 2r and the sub return air inlet 14 passes through the total enthalpy heat exchanger 41, and is discharged as exhaust air EA from the sub exhaust port 15, the exhaust chamber 19, and the main exhaust port 6 to the outside of the inner casing 13. Hereinafter, the flow of air is also referred to as "first air flow F1". The outdoor air OA introduced from the main outdoor air intake port 5, the outdoor air intake chamber 18, and the sub outdoor air intake port 16 passes through the total enthalpy heat exchanger 41 and is supplied as the supply air SA from the sub air supply port 17 and the main air supply port 2s into the chamber. Hereinafter, the flow of air is also referred to as "second air flow F2".

(basic construction of Total Heat exchanger)

Fig. 6 is a perspective view of the total heat exchanger.

The total enthalpy heat exchanger 41 in the present embodiment is an orthogonal total enthalpy heat exchanger configured to pass the first air flow F1 and the second air flow F2 substantially orthogonally. The total enthalpy heat exchanger 41 includes a partition plate 41a and a partition plate 41b. The partition plates 41a and the partition plates 41b are alternately laminated by a suitable adhesive. The total heat exchanger 41 is formed in a substantially quadrangular prism shape as a whole.

The partition plate 41a has heat conductivity and moisture permeability, and is formed in a flat plate shape. The partition plate 41a also has a property of transmitting the refrigerant.

The partition plate 41b is formed in the following shape: a substantially triangular cross section is formed continuously in a wave plate shape. The partition plate 41b forms an air passage between two adjacent partition plates 41 a. The partition plates 41b are stacked in such a manner that the angle of 90 degrees is changed for each in the direction in which the partition plates 41a and the partition plates 41b are stacked. Thus, the exhaust-side passage 41c for passing the first air flow F1 and the intake-side passage 41d for passing the second air flow F2 are formed orthogonally to each other on both sides thereof with one partition plate 41a interposed therebetween. The air flowing through the exhaust-side passage 41c and the air flowing through the intake-side passage 41d undergo sensible heat and latent heat exchange (total heat exchange) via the partition plate 41a having heat conductivity and moisture permeability.

(operation of ventilator)

As shown in fig. 3 to 5, the interior of the inner housing 13 is divided into two regions, i.e., an indoor side (upper side in the inner housing 13) and an outdoor side (lower side in the inner housing 13), by the total enthalpy heat exchanger 41. As shown in fig. 3 and 5, in the inner casing 13, an upstream-side exhaust air passage 46a is formed on the upstream side of the total heat exchanger 41 with respect to the first air flow F1, and a downstream-side exhaust air passage 46b is formed on the downstream side of the total heat exchanger 41 with respect to the first air flow F1. The upstream-side exhaust air passage 46a and the downstream-side exhaust air passage 46b constitute an exhaust air passage 46 that communicates the indoor space and the outdoor space via the total heat exchanger 41.

As shown in fig. 3 and 4, an upstream-side air supply passage 47a is formed in the inner casing 13 on the upstream side of the second air flow F2 with respect to the total heat exchanger 41, and a downstream-side air supply passage 47b is formed on the downstream side of the total heat exchanger 41 with respect to the second air flow F2. Upstream-side air supply air passage 47a and downstream-side air supply air passage 47b constitute an air supply air passage 47 that communicates the indoor space and the outdoor space via total heat exchanger 41.

As shown in fig. 3, a partition wall 51 is provided between the upstream exhaust air passage 46a and the downstream supply air passage 47b. A partition wall 52 is provided between the downstream-side exhaust air passage 46b and the upstream-side intake air passage 47 a.

As shown in fig. 3 and 5, the exhaust fan 43 is disposed in the vicinity of the sub-exhaust port 15 in the downstream exhaust air passage 46b. The exhaust fan 43 is driven to generate the first airflow F1, and the return air RA from the room passes through the exhaust air passage 46 and is discharged to the outside as exhaust air EA.

As shown in fig. 3 and 4, the downstream air supply passage 47b has the air supply fan 42 disposed in the vicinity of the sub air supply port 17. Second air flow F2 is generated by driving air supply fan 42, and outdoor air OA passes through air supply air passage 47 and is supplied to the indoor space as supply air SA.

The ventilation operation is performed by driving the exhaust fan 43 and the intake fan 42. Thus, the return air RA from the room is discharged to the outside, and the outside air OA from the outside is supplied to the room, thereby ventilating the room. Then, the return air RA from the room and the outside air OA from the outside exchange sensible heat and latent heat by the total heat exchanger 41, and changes in the temperature and humidity in the room are suppressed.

(mounting and dismounting structure of total heat exchanger)

As shown in fig. 2, the total enthalpy heat exchanger 41 can be taken out sideways (in the direction of the hollow arrow) from the inner casing 13. The total heat exchanger 41 of the present embodiment has a portion 41e protruding from the right side plate 13a, and the portion 41e is provided with a handle 41f. Then, the operator can take out the total heat exchanger 41 from the inner case 13 by holding the handle 41f in his hand and pulling the total heat exchanger 41 in the direction of the outlined arrow. In fig. 2, a projection area of the total enthalpy heat exchanger 41 projected to the side (extraction direction) and a space area through which the total enthalpy heat exchanger 41 passes when the total enthalpy heat exchanger 41 is extracted from the inner case 13 are denoted by symbol K.

(attaching and detaching structure of side plate)

Fig. 7 is a perspective view showing a state where the right side plate 2a is detached from the ventilator. The right side plate 2a of the ventilator 1 can be easily attached and detached by fastening or detaching a screw. When the right side plate 2a is removed, the right side surface of the housing 2 is opened, and the right side inside the housing 2 is exposed. The total enthalpy heat exchanger 41 can be taken out from the inner casing 13 and the casing 2 through the opening. By taking out the total enthalpy heat exchanger 41 from the inner casing 13 and the casing 2, the total enthalpy heat exchanger 41 can be easily repaired and replaced. Since the electrical component unit 27 is also exposed to the outside by removing the right side plate 2a of the housing 2, the operation and maintenance of the electrical component unit 27 can be easily performed.

A back surface of the right side plate 2a or a main body side of the housing 2 is provided with, for example, a gasket. Thus, when the right side plate 2a is attached to the main body side of the housing 2, a gap can be prevented as much as possible from being generated between the contact surfaces.

As shown in fig. 7, on the right side of the inside of the housing 2, the outside air introducing chamber 18 is located downward. The space where the outside air introducing chamber 18 is located and the space above it are separated by the waterproof sheet 21. The presence of the waterproof sheet 21 suppresses entry of water from the space below the waterproof sheet 21 to the space above the waterproof sheet 21. However, even if a small gap is provided, air can pass through, and therefore, sufficient airtightness cannot be ensured by the waterproof sheet 21 for air.

When the supply air fan 42 is operated in a state where the right side plate 2a is attached to the main body portion of the casing 2, the space in which the outside air introducing chamber 18 is located becomes a negative pressure, and outside air is sucked from the main outside air introducing port 5. Originally, it is preferable to make only the space in which the outside air introducing chamber 18 is located negative pressure. However, as described above, the space above the waterproof sheet 21 is also at a negative pressure because the waterproof sheet 21 cannot sufficiently ensure airtightness. As a result, air may be sucked from a gap between the right side plate 2a facing the space above the waterproof plate 21 and the main body portion of the housing 2. When air is inhaled, water droplets brought by rain may be immersed together.

Fig. 8 is a schematic view of the case 2 in a case where a sealing member described later is not used, as a reference drawing, as viewed from the front. The housing 2 other than the right side plate 2a is a main body portion 2M of the housing 2. The portion surrounded by the lower right circle in the figure is also shown in an enlarged sectional view.

When attaching the right side plate 2a, the operator inserts the upper end of the right side plate 2a into the top plate 2f, and slightly lifts the right side plate 2a upward by contacting the body 2M of the housing 2. For example, a hook 2j fixed to the right side plate 2a is hooked on a support portion 2h provided in the main body portion 2M. In this state, the right side plate 2a is temporarily fixed to the main body, and the right side plate 2a does not fall down even if the operator is left. Here, the operator fixes the right side plate 2a to the main body of the housing 2 with screws.

In order to enable the above-described attachment, it is necessary to provide some clearance between the upper end of the right side plate 2a and the back surface of the top plate 2f so that the right side plate 2a can be raised slightly above a predetermined position. However, after the right side plate 2a is mounted, when the air supply fan 42 is operated, air enters from the above gap. As a result, water droplets easily enter from the side surface of the top plate 2f where rainwater drips. For this purpose, the following structure is adopted.

(sealing structure)

Fig. 9 is a schematic view of the case 2 in the case of using the seal member 11 of the present disclosure as viewed from the front. Fig. 10 is a partial sectional view of a portion surrounded by an upper right circle in fig. 9. The seal member 11 is attached to extend along the right side in the back side and front-rear direction (fig. 1) when the top plate 2f is viewed from above. The cross-sectional shape of the seal member 11 in the free state is rectangular or square. The sealing member 11 is a foamed body foamed with synthetic rubber or resin as a base material, for example. The closed cell foam and the semi-closed cell foam are present in the sealing member 11. The seal member 11 is rich in elasticity and resilience, and has high sealing performance.

In fig. 9, when the right side plate 2a is attached, the operator inserts the upper end of the right side plate 2a into the top plate 2f, and slightly lifts the upper end upward by pressing the upper end against the sealing member 11. As a result, as shown in fig. 10, the seal member 11 is recessed and brought into close contact with the upper end of the right side plate 2a to exhibit sealing performance. As shown in fig. 8, a hook 2j fixed to the right side plate 2a is hooked on a support portion 2h provided in the main body portion 2M. At this time, the lower portion of the right side plate 2a is temporarily fixed to the body portion, and the upper portion is stably pressed downward by the repulsive force of the seal member 11. Even if the operator is left, the right side plate does not fall down and is not loosened. Here, the operator fixes the right side plate 2a to the main body of the housing 2 with screws.

By providing the sealing structure at the upper end of the right side plate 2a and the sealing member 11 in this manner, it is possible to suppress the intrusion of water droplets from that portion.

The sealing member 11 of the independent bubble is particularly rich in sealing performance. The semi-independent bubble or continuously foamed sealing member 11 exerts sufficient sealing performance by being compressed more than the independent bubbles.

Specifically, in fig. 10, in the case of the independent bubbles, the compression ratio (= compression size x/thickness t) of the seal member 11 for obtaining appropriate sealing performance may be 0% in theory, but several% to less than 10% is also sufficient. The semi-independent bubble or continuous foaming sealing member 11 obtains appropriate sealing performance by a compression ratio of 10% to 70%.

In fig. 10, the sealing member 11 is shown as being provided at a position where the upper end of the right side plate 2a contacts, but the sealing member 11 may be attached to the entire back surface of the top plate 2 f. By attaching the sealing member 11 to the entire back surface of the top plate 2f, it is possible to suppress the intrusion of water droplets from between the upper ends of the other side plates (2 b, 2c, 2 d) and the top plate 2f and the condensation on the back side of the top plate 2f in the case where the top plate 2f is snow-covered, for example.

Summary of the disclosure

In the above disclosure, the sealing structure between the top plate 2f and the upper end of the right side plate 2a can be generally expressed as follows. Further, since the ventilation device 1 may have a left-right symmetrical structure as shown in fig. 1, a sealing structure between the top plate 2f and the upper end of the left side plate may be used. Hereinafter, simply referred to as the side plate 2a.

The ventilator 1 installed outdoors and performing indoor ventilation via a duct 60 includes: an air supply fan 42; and a case 2, the case 2 housing the air supply fan 42, and formed with an outside air introduction port 5 that introduces outside air. The housing 2 includes: a top plate 2f, the top plate 2f constituting an upper surface of the housing 2; a side plate 2a which constitutes a part of a side surface of the housing 2 and which can be attached to and detached from the housing; and a sealing member 11. The sealing member 11 is attached to the back surface of the top plate 2f at a position where the top plate 2f and the side plate 2a intersect, and is in a state of abutting against or being compressed against the upper end portion of the side plate 2a, thereby suppressing the intrusion of water droplets from between the top plate 2f and the upper end portion.

In the ventilation device 1, there is a space in which the inside of the casing 2 becomes negative pressure by the operation of the air supply fan 42, and outside air may be sucked through an unintended path. Therefore, when the side plate 2a is attached to the housing 2, the upper end of the side plate 2a is brought into contact with the sealing member 11 or the sealing member 11 is compressed. Thereby, the upper end of the side plate 2a is brought into close contact with the sealing member 11, and the suction of the outside air from the close contact portion is suppressed. Therefore, it is possible to suppress the entry of water droplets into the ventilator 1 along with the intake of outside air.

The sealing member 11 is preferably formed of a foam. Such a seal member 11 is easily compressed and has a high restoring force, and can maintain sealing performance for a long period of time.

When the sealing member 11 is formed of a foam containing independent bubbles, the upper end of the side plate 2a can be brought into contact with or sunk into the sealing member 11 by attaching the side plate 2a.

The foam of closed cells does not allow air to pass through the inside, and therefore, even if it is pressed against the foam to such an extent that it is in contact with the foam, a desired sealing performance can be ensured. The penetration of water droplets can be more reliably suppressed by merely pressing the sealing member into the water.

When the sealing member 11 is formed of a semi-closed cell or a continuous foamed body, it is preferable that the side plate 2a is attached so that the upper end portion of the side plate 2a is recessed in the sealing member 11 to 10% to 70% of the thickness of the sealing member 11.

The semi-closed cell or continuous foam allows air to pass through the interior thereof, but the penetration of water droplets can be suppressed by the pressure bonding at the above ratio.

In the ventilation device 1, the inner case 13 is provided inside the case 2, and the air supply fan 42 is provided inside the inner case 13. In the case of the double-casing structure, an in-device space is generated between the outer casing 2 and the inner casing 13, and a gap may be generated in which outside air is sucked by operation of the air supply fan 42 and water droplets may enter. In the above state, the seal structure of the present disclosure is particularly advantageous.

(supplementary notes)

While the embodiments have been described, it should be understood that various changes in form and details may be made therein without departing from the spirit and scope of the claims.

Claims (5)

1. A kind of air-changing device is disclosed,

the ventilator (1) is installed outdoors and performs indoor ventilation via a duct (60), and is characterized by comprising:

an air supply fan (42); and

a case (2) that houses the air supply fan (42), the case (2) being formed with an outside air introduction port (5) that introduces outside air,

the housing (2) comprises:

a top plate (2 f), the top plate (2 f) constituting an upper surface of the housing (2);

a side plate (2 a) that constitutes a part of a side surface of the housing (2), and that can be attached to the housing (2) or detached from the housing (2); and

and a sealing member (11) which is attached to the back surface of the top plate (2 f) at a position where the top plate (2 f) and the side plate (2 a) intersect, and which is in a state of being in contact with or compressed against the upper end portion of the side plate (2 a), thereby suppressing the intrusion of water droplets from between the top plate (2 f) and the upper end portion.

2. The air gasper of claim 1,

the sealing member (11) is formed of a foam.

3. The air gasper of claim 2,

the sealing member (11) is formed of a foam of closed cells,

the upper end of the side plate (2 a) is brought into contact with the sealing member (11) or is sunk into the sealing member (11) by the attachment of the side plate (2 a).

4. The air gasper of claim 2,

the sealing member (11) is formed of a semi-closed cell or a continuous foamed foam,

the upper end portion of the side plate (2 a) is recessed in the sealing member (11) by 10% to 70% of the thickness of the sealing member (11) by the attachment of the side plate (2 a).

5. The ventilation device according to any one of claims 1 to 4,

the inside of casing (2) is provided with interior casing (13), air supply fan (42) set up in the inside of interior casing (13).

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