JP7252471B2 - ventilator - Google Patents

Description

The present disclosure relates to ventilators.

Patent Literature 1 discloses a ventilation device that exchanges air between indoors and outdoors. This ventilator has a casing having an outside air intake, an exhaust, an air supply, and an indoor intake, and a heat exchanger and a fan unit housed inside the casing. The casing is formed in a rectangular parallelepiped shape. An outside air intake port and an air exhaust port are formed in the bottom plate of the casing and connected to a duct that communicates with the outside of the room.

In the ventilator disclosed in Patent Document 1, by driving the fan unit, the outdoor air that has flowed into the casing from the outside air intake is supplied through the heat exchanger into the room from the air supply opening, and is supplied from the indoor intake to the casing. The indoor air that has flowed inside passes through the heat exchanger and is discharged from the exhaust port to the outside. In the heat exchanger, heat is exchanged between the outdoor air and the indoor air, and the outdoor air is supplied indoors with a reduced temperature difference from the indoor air.

JP 2019-56515 A

When the outdoor humidity is extremely high, such as when fog is generated, dew condensation is likely to occur in the casing when the outdoor air is taken into the casing. When water generated by condensation is discharged from the outside air intake port and the exhaust port of the bottom plate of the casing, the water may accumulate in the duct and deteriorate the duct.

An object of the present disclosure is to provide a ventilator capable of suppressing discharge of water from an opening formed in a bottom plate of a casing.

(1) The ventilation device of the present disclosure is
a fan for generating an airflow;
a casing in which the fan is housed,
the casing has a bottom plate with an opening through which the air flow generated by the fan passes;
The bottom plate is inclined with the casing installed.

According to the ventilator having the above configuration, at least part of the water generated in the casing can be guided to the bottom of the bottom plate, thereby suppressing the discharge of water from the opening of the bottom plate to the outside of the casing. can be done.

(2) Preferably, the casing is shaped like a rectangular parallelepiped or a cube.

(3) Preferably, the ventilator further includes an attachment member that supports the casing with the bottom plate inclined and attaches the casing to an installation location.
According to this configuration, even a rectangular parallelepiped or cubic casing can be easily installed at the installation location with the bottom plate inclined.

(4) Preferably, the ventilator is provided with a drain processing section below the lowest part of the bottom plate for processing dropped water.
With such a configuration, even if water leaks from the lowest part of the bottom plate, it can be treated appropriately. Here, "drainage treatment" refers to catching water leaking from the casing, storing the water, or draining the water to a predetermined location.

(5) Preferably, the casing has a side plate adjacent to the lowest part of the bottom plate,
A water absorbing member is provided on the outer surfaces of the bottom plate and the side plates.
According to this configuration, even if water leaks from the lowest portion of the bottom plate, the water is absorbed by the water absorbing members provided on the bottom plate and the side plates, and the water can be prevented from falling downward.

(6) Preferably, the ventilator further comprises a heat exchanger arranged inside the casing for cooling the air.
If the casing is equipped with a heat exchanger that cools the air, the high-humidity air that is cooled by the heat exchanger tends to condense and cause water to form inside the casing. is more effective.

(7) The lower end of the heat exchanger may be arranged at a position shifted from above the opening.
With such a configuration, when water generated in the heat exchanger drops downward from the lower end of the heat exchanger, it is possible to prevent the water from entering the opening directly.

(8) The casing has the bottom plate, a top plate arranged to face the bottom plate, and side plates arranged between the bottom plate and the top plate,
Of the bottom plate, the top plate, and the side plates, only the bottom plate may be inclined.

(9) Preferably, the casing includes a first plate having an opening through which airflow generated by the fan passes, and a second plate adjacent to the first plate,
The casing can be installed by selecting either a first installation mode in which the first plate is the bottom plate and is inclined, or a second installation mode in which the second plate is the bottom plate.
According to this configuration, when the casing is installed in the first installation mode, at least part of the water generated within the casing is guided to the lowermost portion of the first plate, and the water is discharged from the opening formed in the first plate. Emissions can be suppressed.

1 is a front view of the ventilation device according to the first embodiment of the present disclosure when installed in a first installation mode; FIG. Fig. 2 is a side view of the ventilator; It is an exploded perspective view of a ventilator. It is a front view which shows the inside of a ventilator roughly. FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; FIG. 5 is a cross-sectional view taken along line BB of FIG. 4; It is a perspective view of a total heat exchanger. FIG. 11 is a side view of the ventilator installed in a second installation mode; FIG. 5 is a cross-sectional view of the ventilator according to the second embodiment taken along line AA of FIG. 4; FIG. 5 is a cross-sectional view of the ventilator according to the third embodiment taken along line AA of FIG. 4;

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
[First embodiment]
FIG. 1 is a front view of the ventilator according to the first embodiment of the present disclosure when installed in a first installation mode. FIG. 2 is a side view of the ventilator. FIG. 3 is an exploded perspective view of the ventilator. FIG. 8 is a side view of the ventilator installed in the second installation mode. In the following description, the terms top, bottom, front, back, left, and right follow the arrows shown with these terms in FIGS. 1-3. However, these descriptions are merely examples, and for example, left and right and front and back may be interchanged.

The ventilation device 10 ventilates the indoor space by exchanging outdoor air and indoor air. The ventilation device 10 is connected to the outdoor space and the indoor space via the duct D. The ventilation device 10 is installed indoors in either a first installation mode (see FIGS. 1 and 2) in which it is installed on the wall W of the room, or a second installation mode (see FIG. 8) in which it is installed on the ceiling C in the room. be done. Figures 1 and 2 show the ventilator installed in a first installation mode. In the first installation mode, the ventilator 10 is installed on the wall W in the room by means of a mounting frame (mounting member) 11 . In the second installation mode, the ventilator 10 is installed on the ceiling C with the bar 28 .

The ventilator 10 has a box-shaped casing 13 formed in the shape of a rectangular parallelepiped. A total heat exchanger 41 , an air supply fan 42 , and an exhaust fan 43 , which will be described later, are accommodated in the casing 13 . The casing 13 is provided with a return air intake 14 , an exhaust air outlet 15 , an outside air intake 16 , and a supply air outlet 17 . Cylindrical bodies 14a, 15a, 16a, and 17a to which the duct D is connected are attached to portions of the casing 13 where the return air intake 14, the exhaust air outlet 15, the outside air intake 16, and the supply air outlet 17 are formed. It is

The return air intake 14 is used to take in the air (return air) RA from the indoor space into the casing 13 . The exhaust outlet 15 is used to discharge the return air RA taken into the casing 13 to the outside of the room as the exhaust EA. The outside air intake 16 is used to take in air (outside air) OA from outside the room into the casing 13 . The supply air outlet 17 is used to supply outside air OA taken into the casing 13 into the room as supply air SA.

The casing 13 has a first plate 21 in which the outside air intake 16 and the exhaust air outlet 15 are formed, and a sixth plate 26 in which the return air intake 14 and the supply air outlet 17 are formed. The first plate 21 and the sixth plate 26 are rectangular plate members having the same shape, and are arranged in parallel facing each other with a gap in the vertical direction. The outside air intake 16 and the exhaust air outlet 15 are arranged side by side in the direction along the long side of the first plate 21 . The return air intake 14 and the supply air outlet 17 are arranged side by side in the direction along the long side of the sixth plate 26 .

The casing 13 has a second plate 22 , a third plate 23 , a fourth plate 24 and a fifth plate 25 connecting four sides of the first plate 21 and four sides of the sixth plate 26 . Each of the second plate 22 to the fifth plate 25 is formed in a rectangular or square shape. The second plate 22 and the third plate 23 are arranged parallel to each other with a space therebetween. The fourth plate 24 and the fifth plate 25 are arranged parallel to each other with a space therebetween.

In the first installation mode, the first plate 21 of the casing 13 is arranged on the lower side and the sixth plate 26 is arranged on the upper side. Therefore, the first plate 21 constitutes the bottom plate of the casing 13 and the sixth plate 26 constitutes the top plate of the casing 13 . In the first installation mode, the third plate 23 of the casing 13 is arranged on the front side and the second plate 22 is arranged on the rear side. A fourth plate 24 of the casing 13 is arranged on the left side and a fifth plate 25 is arranged on the right side. An electrical component box 27 is attached to the upper side of the fourth plate 24 of the casing 13 .

As shown in FIG. 1, mounting plates 24a and 25a are provided on both ends of the fourth plate 24 of the casing 13 in the vertical direction and both ends of the fifth plate 25 in the vertical direction. The mounting plates 24a and 25a are used for fixing the casing 13 to the mounting frame 11 in the first installation mode, and are used to fix the casing 13 to the ceiling C via the bars 28 in the second installation mode (see FIG. 8). used for hanging In the second installation mode, the second plate 22 is the bottom plate and the third plate 23 is the top plate. At this time, the second plate 22 and the third plate 23 are arranged horizontally.

The mounting frame 11 has a frame body 31 and a drain processing section 37 . As shown in FIG. 2, the frame main body 31 is attached to the indoor wall W while supporting the ventilator 10 . As shown in FIG. 3, the frame body 31 includes an upper horizontal frame 32 and a lower horizontal frame 33 spaced apart in the vertical direction, and a left vertical frame 34 and a right vertical frame 34 spaced horizontally. It has a vertical frame 35 . The left vertical frame 34 and the right vertical frame 35 connect the upper horizontal frame 32 and the lower horizontal frame 33 together.

The upper lateral frame 32 and the lower lateral frame 33 are formed in a U shape when viewed from above. The upper horizontal frame 32 and the lower horizontal frame 33 have first members 32a, 33a extending in the left-right direction, and second members 32b, 33b extending forward from both ends of the first members 32a, 33a. The second member 33b of the lower horizontal frame 33 is longer than the second member 32b of the upper horizontal frame 32 in the front-rear direction.

As shown in FIGS. 2 and 3, fixing plates 32c and 33c are provided at the distal end portions of the second members 32b and 33b of the upper horizontal frame 32 and the lower horizontal frame 33, respectively. Fixing plates 32 c and 33 c are used to fix mounting plates 24 a and 25 a of casing 13 . The mounting plates 24a and 25a are fixed to the fixing plates 32c and 33c with fasteners such as bolts and nuts.

The fixing plate 33c of the lower horizontal frame 33 is located forward of the fixing plate 32c of the upper horizontal frame 32. As shown in FIG. Therefore, when the mounting plates 24a and 25a are fixed to the fixing plates 32c and 33c, the casing 13 is supported in an inclined state so that the lower portion is located forward of the upper portion.

As shown in FIG. 2, in this embodiment, the inclination angle θ of the casing 13 with respect to the vertical direction is approximately 3°. By tilting the casing 13, the outer surfaces of the first plate 21, the second plate 22, the third plate 23, and the sixth plate 26 of the casing 13 are arranged to be tilted with respect to the horizontal. The outer surfaces of the fourth plate 24 and the fifth plate 25 are arranged parallel to the vertical direction, but the sides of the outer periphery are arranged so as to be inclined with respect to the horizontal.

As shown in FIGS. 1 to 3, the drain processing portion 37 of the mounting frame 11 is composed of a drain pan that receives water dropped from the casing 13. As shown in FIG. Hereinafter, the drain pan is given the same reference numeral 37 as the drain processing section. The drain pan 37 is a rectangular parallelepiped box that is elongated in the left-right direction and has an open top surface. Both ends of the drain pan 37 in the horizontal direction are fixed to the left and right second members 33b of the lower horizontal frame 33, respectively. The length of the drain pan 37 in the left-right direction is the same as or longer than the length of the casing 13 in the left-right direction.

As shown in FIG. 2 , the drain pan 37 is arranged below the rear end portion 21 a of the first plate 21 of the casing 13 . Since the first plate 21 is inclined with respect to the horizontal, the rear end portion 21a of the first plate 21 is positioned at the bottom of the first plate 21 . As will be described later, water due to dew condensation or the like generated inside the casing 13 flows on the bottom plate 21 toward the lowest portion 21a, so even if it leaks from the casing 13, the drain pan 37 receives it.

The drain pan 37 of this embodiment receives and stores water. However, the drain pan 37 may be connected to a drain hose for draining the received water to a predetermined location.

As shown in FIGS. 1 to 3, the upper portion of the frame body 31 is provided with a cover 38 for the electrical component box 27. As shown in FIGS. The cover 38 is made of a plate member attached to the second member 32b of the upper horizontal frame 32. As shown in FIG. The cover 38 covers the electrical component box 27 of the ventilator 10 attached to the frame body 31 from above to protect the electrical component box 27 from water and the like.

FIG. 4 is a front view schematically showing the inside of the ventilator. 5 is a cross-sectional view taken along the line AA of FIG. 4. FIG. 6 is a cross-sectional view taken along the line BB of FIG. 4. FIG.
A total heat exchanger 41 , an air supply fan 42 and an exhaust fan 43 are arranged inside the casing 13 . In the casing 13, the return air RA taken in from the return air intake port 14 passes through the total heat exchanger 41 and is discharged to the outside from the exhaust outlet 15 as the exhaust EA. Hereinafter, this air flow is also referred to as "first air flow F1". The outside air OA taken in from the outside air intake port 16 passes through the total heat exchanger 41 and is supplied indoors from the supply air outlet 17 as supply air SA. Hereinafter, this air flow is also referred to as "second air flow F2".

FIG. 7 is a perspective view of a total heat exchanger.
The total heat exchanger 41 in this embodiment is an orthogonal type total heat exchanger configured such that the first air flow F1 and the second air flow F2 pass substantially orthogonally. This total heat exchanger 41 has a partition plate 41a and a partition plate 41b. The partition plate 41a and the partition plate 41b are alternately laminated with an appropriate adhesive. The total enthalpy heat exchanger 41 is generally formed in a square 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 the property of being permeable to the refrigerant.
The partition plate 41b is formed in a corrugated plate shape in which substantially triangular cross sections are continuously formed. The partition plate 41b forms an air passage between two adjacent partition plates 41a. The partition plate 41b is laminated with an angle changed by 90 degrees for each plate in the direction of lamination of the partition plate 41a and the partition plate 41b (vertical direction in FIG. 5). As a result, on both sides of one partition plate 41a, an exhaust side passage 41c for passing the first air flow F1 and an air supply side passage 41d for passing the second air flow F2 are orthogonal to each other. formed by The air flowing through the exhaust side passage 41c and the air flowing through the air supply side passage 41d exchange sensible heat and latent heat (total heat exchange) via the partition plate 41a having heat conductivity and moisture permeability. ing.

As shown in FIGS. 4 to 6, the interior of the casing 13 is divided into two regions, an indoor side (upper side in the casing 13) and an outdoor side (lower side in the casing 13), by a total heat exchanger 41. ing. As shown in FIGS. 4 and 6, in the casing 13, an upstream exhaust air passage 46a is formed upstream of the first air flow F1 from the total heat exchanger 41. A downstream exhaust air passage 46b is formed downstream of the first air flow F1. The upstream exhaust air path 46 a and the downstream exhaust air path 46 b constitute an exhaust air path 46 that communicates the indoor and outdoor areas via the total heat exchanger 41 .

As shown in FIGS. 4 and 5, in the casing 13, an upstream supply air passage 47a is formed upstream of the second air flow F2 from the total heat exchanger 41. A downstream supply air passage 47b is formed downstream of the second air flow F2. The upstream air supply air passage 47 a and the downstream air supply air passage 47 b constitute an air supply air passage 47 that communicates the indoor and outdoor areas via the total heat exchanger 41 .

As shown in FIG. 4, a partition wall 51 is provided between the upstream exhaust air passage 46a and the downstream air supply air passage 47b. A partition wall 52 is provided between the downstream side exhaust air passage 46b and the upstream side air supply air passage 47a.

As shown in FIGS. 4 and 6, an exhaust fan 43 is arranged near the exhaust outlet 15 in the downstream exhaust air passage 46b. By driving the exhaust fan 43, the first air flow F1 is generated, and the return air RA from the room passes through the exhaust air passage 46 and is discharged to the outside as the exhaust EA.

As shown in FIGS. 4 and 5, an air supply fan 42 is arranged near the air supply outlet 17 in the downstream air supply air passage 47b. The second airflow F2 is generated by driving the air supply fan 42, and the outdoor air OA passes through the air supply air passage 47 and is supplied indoors as the air supply SA.

Ventilation operation is performed by driving the exhaust fan 43 and the air supply fan 42 . As a result, 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 to ventilate the room. Further, sensible heat and latent heat are exchanged in the total heat exchanger 41 between the return air RA from the room and the outside air OA from the outside, thereby suppressing changes in temperature and humidity in the room.

When the outdoor humidity is high, for example, when fog is generated, the high-humidity air taken in from the outside air intake 16 in the total heat exchanger 41 exchanges heat with the indoor air to condense. A lot of water can occur inside the casing 13 . In particular, as shown in FIG. 5, a large amount of water is generated near the outdoor air inlet 41f in the total heat exchanger 41 . Water generated in the total heat exchanger 41 flows downward from the total heat exchanger 41 along the partition wall 52 and the second to fifth plates 22 to 25 and reaches the bottom plate (first plate) 21 .

The ventilator 10 of the present embodiment is installed in the first installation mode so that the bottom plate 21 of the casing 13 is inclined. Therefore, the water that has reached the top of the bottom plate 21 is guided to the lowest portion (rear end portion) 21a of the bottom plate 21 by the inclination of the bottom plate 21, and tends to accumulate near the lowest portion 21a. Therefore, it becomes difficult for the water to be discharged from the outside air intake port 16 and the exhaust air outlet 15 formed in the bottom plate 21 . When water is discharged from the outside air intake 16 and the exhaust outlet 15, the water accumulates inside the duct D connected to the outside air intake 16 and the exhaust outlet 15, which may cause corrosion. In this embodiment, the occurrence of such inconvenience can be suppressed.

Both the exhaust air outlet 15 and the outside air intake 16 are arranged to be biased toward the upper end (front end) of the bottom plate 21 in the front-rear direction. Therefore, the water reaching the bottom plate 21 is less likely to flow into the exhaust outlet 15 and the outside air intake 16, and a large space for storing water on the bottom plate 21 can be secured.

The inlet 41f of the total heat exchanger 41, into which the outdoor air flows, is the portion where dew condensation is most likely to occur. In this embodiment, the ventilator 10 is installed at an angle such that the outdoor air inlet 41f side of the total heat exchanger 41 is lower than the indoor air outlet side. Therefore, the water generated at the inlet 41f can easily flow down along the second plate (rear side plate) 22, and can be easily guided to the lowest portion 21a of the bottom plate 21. As shown in FIG.

When the water collected near the lowest portion 21a of the bottom plate 21 leaks from the casing 13, it can be received by the drain pan 37 arranged below. Therefore, it is possible to prevent objects and people in the room from being splashed with water.

In this embodiment, as shown in FIGS. 4 to 6, the outer surface of the first plate (bottom plate) 21 of the casing 13 and the outer surfaces of the second to fifth plates 22 to 25 adjacent thereto are provided with water absorbing members. 39 is provided. The water absorbing member 39 is made of a material capable of absorbing water, such as nonwoven fabric or urethane foam. By providing such a water absorbing member 39, even if water leaks from the casing 13, the water can be absorbed by the water absorbing member 39, and the water can be prevented from falling downward.

The water absorbing member 39 provided on each of the second to fifth plates 22 to 25 is provided in each lower half area. However, the water absorbing member 39 may be provided on the entirety of the second to fifth plates 22 to 25 . The water absorbing member 39 may be provided on the sixth plate (top plate) 26 . The water absorption member 39 may be provided only on the first plate 21 and the second plate 22 adjacent to the lowermost portion 21 a of the first plate 21 .

[Second embodiment]
FIG. 9 is a cross-sectional view of the ventilator according to the second embodiment taken along line AA of FIG.
In the embodiment shown in FIG. 9, the inclination angle θ of the ventilator 10 is larger than in the first embodiment, and the lower end 41e of the total heat exchanger 41 is positioned away from above the outside air intake 16 and the exhaust outlet 15. are placed. Therefore, even if water falls downward from the lower end 41e of the total heat exchanger 41, it is difficult for the water to enter directly into the outside air intake 16 and the exhaust air outlet 15, so that the water can be prevented from entering the duct D.

[Third Embodiment]
FIG. 10 is a cross-sectional view of the ventilator according to the third embodiment taken along line AA of FIG.
In the embodiment shown in FIG. 10, of the first to sixth plates 21 to 26 constituting the casing 13 of the ventilator 10, only the first plate 21, which is the bottom plate, is inclined, and the second to sixth plates 22 to 26 are inclined. is not slanted. In the case of this embodiment, since the entire casing 13 does not have to be inclined, the attachment frame 11 as in the first embodiment is not required, and the attachment to the wall W is facilitated.

[Other embodiments]
Instead of the total heat exchanger 41, the ventilator 10 may include another type of heat exchanger, for example, a heat exchanger through which a heat exchange medium such as a refrigerant flows.
The ventilator 10 may not have a heat exchanger, and may have a filter instead of the heat exchanger, for example.

In the above embodiment, in the first installation mode, the ventilation device 10 is installed so that the second plate 22 of the casing 13 is on the rear side and the third plate is on the front side, but the reverse is also possible. In the first installation mode, the ventilator 10 may be installed such that the sixth plate 26 of the casing 13 serves as the bottom plate.

[Action and effect of the embodiment]
(1) The ventilation device 10 of the above embodiment includes an air supply fan 42 and an exhaust fan 43 that generate an air flow, and a casing 13 that accommodates the air supply fan 42 and the exhaust fan 43 . The casing 13 has a bottom plate (first plate) 21 formed with an outside air intake 16 and an exhaust outlet 15, which are openings through which the air flow generated by the air supply fan 42 and the exhaust fan 43 pass. is installed, the bottom plate 21 is inclined. Therefore, at least part of the water generated in the casing 13 can be guided to the lowest portion 21a of the bottom plate 21, and the water is discharged outside the casing 13 from the outside air intake port 16 and the exhaust outlet 15 of the bottom plate 21. can be suppressed.

(2) In the first and second embodiments, the casing 13 is formed in a rectangular parallelepiped or a cube. The ventilator 10 further includes an attachment frame (attachment member) 11 that supports the casing 13 with the bottom plate 21 inclined and attaches the casing 13 to the installation location. Therefore, even if the casing 13 is rectangular parallelepiped or cubic, it can be easily installed at the installation location with the bottom plate 21 inclined. A conventional ventilator casing can also be applied as it is as the casing 13 of the ventilator 10 of the present disclosure.

(3) In each of the above embodiments, the ventilator 10 includes a drain pan (drain processing section) 37 below the lowest portion 21 a of the bottom plate 21 of the casing 13 . Therefore, the drain pan 37 catches the water leaking from the lowermost portion 21a of the bottom plate 21 of the casing 13, and it is possible to prevent water from splashing on objects and people in the room.

(4) In the above embodiment, the casing 13 has the side plate (second plate) 22 adjacent to the lowermost portion 21a of the bottom plate 21, and the water absorbing member 39 is attached to the outer surfaces of the bottom plate 21 and the side plate 22. . Therefore, water leaking from the lowermost portion 21a of the bottom plate 21 can be absorbed by the water absorbing member 39 and prevented from falling downward.

(5) In each of the above embodiments, the ventilator 10 further includes the total heat exchanger 41 arranged inside the casing 13 to cool the air. When the casing 13 is provided with the total heat exchanger 41 for cooling the air in this way, it is more effective to incline the bottom plate 21 of the casing 13 because water tends to be generated in the casing 13 due to dew condensation. .

(6) In the second embodiment, the lower end 41 e of the total heat exchanger 41 is arranged at a position shifted from above the outside air intake 16 and the exhaust outlet 15 . Therefore, even if water drops due to condensation generated in the total heat exchanger 41 , it is possible to prevent the water from directly entering the outside air intake 16 and the exhaust outlet 15 .

(7) In the third embodiment, the casing 13 includes a bottom plate 21, a top plate (sixth plate) 26 arranged to face the bottom plate 21, and side plates arranged between the bottom plate 21 and the top plate 26. (Second to fifth plates) 22 to 25, and among the bottom plate 21, the top plate 26, and the side plates 22 to 25, only the bottom plate 21 is inclined. Therefore, similarly to the casing 13 of the first and second embodiments, the water reaching the bottom plate 21 is guided to the lowest portion 21a of the bottom plate 21, and is suppressed from being discharged from the outside air intake 16 and the exhaust outlet 15. can do.

(8) In the first and second embodiments, the casing 13 is the first plate formed with the outside air intake port 16 and the exhaust outlet 15 through which the air flow generated by the air supply fan 42 and the exhaust fan 43 passes. 21 and a second plate 22 adjacent to the first plate 21. The casing 13 has a first installation mode in which the first plate 21 is used as a bottom plate and inclined as shown in FIG. As shown, it can be installed in either a second installation mode in which the second plate 22 is the bottom plate. A conventional ventilator is generally installed in the second installation mode, but by using the mounting member 11, the conventional ventilator can be installed in the second installation mode, and the first plate (bottom plate) 21 can be easily installed. Can be tilted.

The present disclosure is not limited to the above examples, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

10: Ventilator 11: Mounting frame (mounting member)
13: Casing 15: Exhaust outlet (opening)
16: outside air intake (opening)
21: First plate (bottom plate)
21a: bottom 22: second plate (side plate)
23: Third plate (side plate)
24: Fourth plate (side plate)
25: 5th plate (side plate)
26: 6th plate (top plate)
37: Drain pan (drain processing unit)
39: water absorbing member 41: total heat exchanger (heat exchanger)
41e: Lower end 42: Air supply fan 43: Exhaust fan

Claims (7)

a fan (42, 43) for generating an airflow; and a casing (13) in which the fan is housed, the casing (13) having openings (15, 43) through which the airflow generated by the fan passes. 16) having a bottom plate (21) formed thereon, the bottom plate (21) being inclined with the casing (13) installed ,
Further comprising a heat exchanger (41) arranged inside the casing (13) for cooling air,
A ventilator in which a lower end (41e) of the heat exchanger (41) is arranged at a position shifted from above the openings (15, 16). 2. Ventilation device according to claim 1, characterized in that the casing (13) is shaped like a cuboid or a cube. Claim 2, further comprising a mounting member (11) that supports the casing (13) with the bottom plate (21) being inclined and that mounts the casing (13) to the mounting location (W). The ventilator according to . The ventilator according to any one of claims 1 to 3, comprising a drain processing section (37) for processing dropped water below the lowest portion (21a) of the bottom plate (21). The casing (13) has a side plate (22) adjacent to the lowest part of the bottom plate (21), and a water absorbing member (39) is attached to the outer surfaces of the bottom plate (21) and the side plate (22). A ventilator according to any one of claims 1 to 4, wherein The casing (13) is arranged between the bottom plate (21), the top plate (26) facing the bottom plate (21), and the bottom plate (21) and the top plate (26). The bottom plate (21) among the bottom plate (21), the top plate (26), and the side plates (22, 23, 24, 25) 2. Ventilation device according to claim 1, wherein the chisels are arranged obliquely. Said casing (13) comprises a first plate (21) formed with openings (15, 16) through which the airflow generated by said fans (42, 43) passes, and adjoining said first plate (21). The casing (13) has a first installation mode in which the first plate (21) is used as a bottom plate and is inclined, and the second plate (22) is used as a bottom plate. The ventilator according to any one of claims 1 to 6 , which can be installed by selecting one of the second installation modes.

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