JP3664107B2 - Air conditioning fan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a simultaneous intake / exhaust air-conditioning exhaust fan capable of continuously exchanging heat between indoor air to be exhausted and outdoor air to be exhausted.
[0002]
[Prior art]
A conventional air-conditioning ventilation fan has a configuration as disclosed in, for example, Japanese Utility Model Publication No. 64-4027. That is, as shown in FIG. 20, it comprises a main body 70 that is fitted into a mounting hole formed in a wall body that separates the interior and the exterior, and a decorative cover 71 that is mounted on the indoor side of the main body 70. An intake air blower 73 that sucks outdoor air and an exhaust air blower 72 that exhausts room air are incorporated in the main body 70, and a heat exchanger 74 is incorporated in the decorative cover 71. On the discharge side of the intake air blower 73, a supply air ventilation path that is partially opened in the room constituted by one working fluid passage of the heat exchanger 74 is configured, and on the suction side of the exhaust air blower 72, a part is heated. An exhaust ventilation path that is open to the inside of the room formed by the other working fluid passage of the exchanger 74 is configured. The suction side of the intake blower 73 and the discharge side of the exhaust blower 72 are both connected to an intake port 75 and an exhaust port 76 formed at the outdoor side end of the main body 70, respectively.
[0003]
The air-conditioning ventilation fan having the above configuration can supply fresh outdoor air to the room through the heat exchanger 74 and simultaneously exhaust the contaminated room air to the outside through the heat exchanger 74. That is, heat exchange is continuously performed between the exhaust flow and the intake flow, and ventilation by intake / exhaust with little variation in the indoor temperature can be performed.
[0004]
[Problems to be solved by the invention]
In the conventional air-conditioning ventilation fan as described above, the air inlet 75 and the air outlet 76 are opened at the outdoor end of the main body 70, and it is necessary to face these outside (in most cases, outdoors). It can be attached only to a room having a wall, and has a problem to be solved that it cannot be attached to a room having no external wall. In recent years, the number of rooms without external walls tends to increase with the collection and building of houses. In addition, although it has a structure for receiving the drain generated in the heat exchanger 74, since it cannot be drained by itself, there is a disadvantage that the drain dripped indoors, when removing the heat exchanger for maintenance, etc. The drain remaining in the drain receiver or the like may be dripped onto the operator.
[0005]
Furthermore, there is a problem that air leakage or drain leakage is likely to occur from the gap between the holding portion that holds the heat exchanger 74 and the air path, and that it is actually difficult to construct and has a large indoor extension size.
[0006]
The present invention has been made to solve the above-described conventional problems. The purpose of the present invention is, firstly, to eliminate the restriction of the presence or absence of the outer wall in the installation of the air-conditioning ventilation fan, and secondly, the drain autonomy. Is to facilitate maintenance and heat exchanger maintenance, and third is to prevent dripping water when the heat exchanger is removed, and fourth is air leakage and drainage. The fifth is to simplify construction and facilitate installation and removal, the sixth is to increase the degree of freedom of drain piping, and the seventh is to reduce the size. That is.
[0007]
[Means for Solving the Problems]
Provided drain pan rotatable below the heat exchanger, the axial struts that are connected to the side which faces the drain pan by providing the main body casing, and rotatably supported the drain pan axis strut At least one is provided with a drain pipe.
[0008]
A rotatable drain pan is provided below the heat exchanger, and when the drain pan rotates, a partial ceiling surface is provided at the top of the lower end, so that a part of the drain pan is placed on the side, bottom and ceiling surfaces. It was made into the container shape which consists of and it was set as the structure which hold | maintains a drain in the rotation position of a drain pan.
[0009]
Further, the drain pan has a drain pipe connection port, a recess is provided in the inner bottom portion of the drain tray, an elastic seal member is provided in the recess, and the drain seal pipe is inserted into the drain pipe connection port by the elastic force acting in the axial direction of the elastic seal member. The drain pipe is configured to be connected to the drain pan.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a longitudinal sectional view of an air-conditioning ventilation fan showing an embodiment of the present invention, and FIG. 2 is a perspective view of the entire air-conditioning ventilation fan.
[0011]
The air-conditioning ventilation fan includes a main body attached to the space behind the ceiling and a decorative panel 1 attached to the lower surface of the main body along the ceiling surface C. The main body has a structure in which ventilation function parts are incorporated in a box-shaped main body casing 2 having an open bottom surface. That is, an intake air blower 3 that sucks in outdoor air and an exhaust air blower 4 that exhausts indoor air are incorporated in the main body casing 2, and a part of the discharge side of the intake air blower 3 is a working fluid passage of the heat exchanger 5. A constructed intake ventilation path 6 is provided, and an exhaust ventilation path 7, which is partly constituted by the other working fluid path of the heat exchanger 5, is provided on the suction side of the exhaust blower 4. The outlet end of the intake ventilation path 6 communicates with the interior through the intake outlet 8 of the decorative panel 1, and the inlet end of the exhaust ventilation path 7 communicates with the exhaust inlet 9 formed alongside the intake outlet 8 of the decorative panel 1. Yes. The working fluid passage through which the exhaust flow of the heat exchanger 5 passes is formed so as to be downwardly inclined toward the flow direction of the exhaust flow, and a drain pan 10 is disposed below the lower inclined end of the holding portion 11 of the heat exchanger 5. It is attached to serve as both. The suction side of the intake blower 3 and the discharge side of the exhaust blower 4 are both arranged side by side on the back side of the main casing 2 as an intake connection port 12 and an exhaust connection port 13 that can be connected to a duct. In FIG. 1, the arrow A indicates the flow of the intake flow, and the arrow B indicates the flow of the exhaust flow. Further, the intake ventilation path 6 and the exhaust ventilation path 7 are divided by the partition member 14 and the like in an independent state over the entire path.
[0012]
In the drain pan 10, a cylindrical drain pipe connection port 15 and a shaft portion 15 a are projected on the same axis at both ends of one side end, and the shaft portion 15 a and the drain pipe connection port 15 are perpendicular to the main casing 2. It is pivotally supported so that it can rotate. However, normally, the drain pipe connection port 15 side is held by a stopper or the like so as to have a slight gradient with a downward inclined end. A drain pipe 16 is connected to the drain pipe connection port 15 and communicates with a predetermined drainage place. Ducts are also connected to the intake connection port 12 and the exhaust connection port 13 to communicate with the outside of the room.
[0013]
The air-conditioning ventilation fan having the above configuration is the same as the conventional one described above in terms of the ventilation function. This air-conditioning ventilation fan is characterized in that a duct can be connected to each of the intake connection port 12 and the exhaust connection port 13 so that each can communicate with the outside through the duct, so that the ceiling of the room regardless of whether the room faces the outer wall. Since the drain generated in the heat exchanger 5 is also drained from the drain pan 10 to the place set by the drain pipe 16, there is no inconvenience that the drain is dripped into the room. Further, particularly during maintenance of the heat exchanger 5, the drain pan 10 located under the heat exchanger 5 can be rotated to an unobstructed position with the drain pipe connection port 15 and the shaft portion 15a as axes. Maintenance of the heat exchanger 5 can be easily performed without removing the drain pan 10. In the mounted state, the ventilation function component is incorporated in the main casing 2 and only the decorative panel 1 is presented on the ceiling surface C side. Therefore, the protruding size to the indoor side is extremely small.
[0014]
In this way, an intake blower that sucks outdoor air from the intake connection port and an exhaust blower that exhausts indoor air from the exhaust connection port are incorporated in the main body casing, and a part of the air is exchanged on the discharge side of the intake blower An air intake passage that opens to the room, which is configured by one working fluid passage of the heat exchanger, is blown into the room from the intake air outlet, and a part of the suction fan side of the exhaust blower is configured by the other working fluid passage of the heat exchanger An air-conditioning ventilation fan that has an exhaust ventilation path that opens to the inside of the room and sucks in from the exhaust air inlet, and is equipped with a rotatable drain pan below the heat exchanger, so it is located under the heat exchanger, especially during heat exchanger maintenance. The drain pan to be rotated can be rotated to a position where it does not get in the way.
[0015]
In addition, the drain pan is connected to the shaft that is the center of rotation on the two opposite sides of the drain pan, and at least one of the shafts is also used as a drainage pipe. The drain pan located at the position can be rotated to an unobstructed position with the drain pipe connection port as an axis.
[0016]
Embodiment 2. FIG.
3 and 4 and FIGS. 5 and 6 show other embodiments of the drain pan 10, respectively. The configuration other than the drain pan 10 is the same as that of the above-described first embodiment, and description thereof will be omitted by attaching common reference numerals to the drawings.
[0017]
The drain pan 10 is provided with a local ceiling surface 17 on the upper portion on the opposite side of the shaft 15 a serving as the rotation axis of the drain pan 10 and the side where the drain pipe connection port 15 is located. As a result, as shown in FIG. 4, the drain pan 10 remains on the drain pan 10 even when the drain pan 10 is rotated downward at the shaft portion 15 a and the drain pipe connection port 15 for maintenance of the heat exchanger 5. Since the drainage flows down and is stored in the container-like portion 18 constituted by the side surface, bottom surface, and ceiling surface 17 of the drain pan 10, there is no inconvenience of dripping the drain to the operator, and maintenance and other operations are easy. Become.
[0018]
In particular, as shown in FIGS. 5 and 6, when the guide protrusions 19 in an isosceles triangle state are provided inward from the intermediate portions on both sides of the drain pan 10, the water is indicated by dotted arrows in FIG. 6 during normal drainage. When the drain pan 10 is rotated downward at the shaft portion 15a and the drain pipe connection port 15 for maintenance of the heat exchanger 5 or the like, the guide projection 19 makes the center as shown by the solid line arrow in FIG. As a result, the drain is drawn closer to the container-like portion 18 and stored, so that dripping of the drain can be prevented more reliably.
[0019]
By doing so, the drain pan is provided with a ceiling surface on the upper surface opposite to the shaft support side of the drain pan. Therefore, when the drain pan is rotated especially during maintenance of the heat exchanger, the rotation position In the lower part of the drain pan, a container-like portion is formed by a ceiling surface, a side surface, and a bottom surface, so that the drain does not easily flow out to the outside.
[0020]
Embodiment 3 FIG.
FIG. 7 is a longitudinal side view of an air-conditioning ventilation fan showing an embodiment of the present invention, and FIGS. 8 to 11 are an explanatory view, a partial perspective view, and a partial cross-sectional view when the air-conditioning ventilation fan is mounted.
[0021]
Although this air-conditioning ventilation fan was shown by the said Embodiment 1, the heat exchanger 5 and the drain pan 10 were integrally shape | molded including the intake ventilation path 6 and the exhaust ventilation path 7 of the said part, and the holding | maintenance part 11 of the heat exchanger 5. The heat exchange system and the drain system are configured by being incorporated in the chamber structure 20 and mounting the chamber structure 20 in the main casing 2. Further, the suction side of the intake blower 3 and the discharge side of the exhaust blower 4 are both provided in an intake / exhaust frame 21 configured separately from the main casing 2 as an intake connection port 12 and an exhaust connection port 13 that can be duct-connected. Thus, a series of ventilation paths are formed by joining the main casing 2 to the intake / exhaust frame 21.
[0022]
The chamber structure 20 is configured as a lower open box that can be inserted and fixed to the main body casing 2 from below as shown in FIGS. 9 and 10, with a heat exchanger mounting portion on the upper side and a drain pan mounting portion below it. Is formed. The heat exchanger mounting portion is formed with a holding portion 11 that holds the opposing ridge corner portions of the heat exchanger 5 without creating a gap. At the other ridges positioned above and below the heat exchanger 5, there are provided bulging portions 22 that bulge toward the inlet / outlet side of the working fluid passage through which the exhaust flow passes as shown in FIG. The drain mounting portion is formed with a wide step portion 23 on the front and rear sides outside the heat exchanger mounting portion, and a shaft support portion 24 that pivotally supports the shaft portion 15a of the drain pan 10 and the drain pipe connection port 15 is formed at an opposing position. Yes. The drain pan 10 pivotally supported on the pivotal support 24 receives the bulging portion 22 on the lower side of the heat exchanger 5 incorporated in the chamber structure 20 as shown in FIG. The upper surface abuts on the heat exchanger 23 and the flat area of the heat exchanger mounting portion is received below. Therefore, all the drain from the heat exchanger mounting part side is received in the drain pan 10 as shown in FIG. The drainage pipe connection port 15 side shaft support portion 24 has a configuration in which a lower open U-groove 25 and an upper open U-groove 26 are adjacent to each other at an interval.
[0023]
The intake / exhaust frame 21 is provided with an external drainage connection portion 27 for draining drain together with the intake connection port 12 and the exhaust connection port 13. The intake / exhaust frame 21 is provided with a flange 28 at the lower portion and an engagement structure with the main body casing 2 at the upper portion, and can be independently attached to an attachment hole formed in the ceiling surface C as shown in FIG. it can. That is, first, the air intake / exhaust frame 21 is attached to the space behind the ceiling through the attachment hole of the ceiling surface C alone as shown in FIG. 8, and then the main body in which the chamber structure 20 is incorporated. The casing 2 is attached so as to be inserted into the attachment hole of the ceiling surface C from below, and the main casing 2 and the intake / exhaust frame 21 attached in advance are joined. The drainage pipe connection port 15 of the drain pan 10 and the external drainage connection part 27 of the intake / exhaust frame 21 are connected by a drain connection pipe 29.
[0024]
The air-conditioning ventilation fan of this embodiment basically performs the same function as that shown in the first embodiment, but in particular, the holding structure 11 of the heat exchanger 5 and the holding part of the drain pan 10 by the chamber structure 20. In addition, since the air passages of the part are integrally formed, air leakage, drain leakage, and the like can be prevented, and the intake connection port 12 and the exhaust connection port 13 that need to be connected to the outside of the main body and the external drainage are required. Since the intake / exhaust frame 21 in which the connecting portions 27 are assembled can be independently attached as a separate body, the workability is good and the difficulty of attachment can be reduced.
[0025]
By doing in this way, in the chamber structure equipped with a holding part that holds the heat exchanger, a support part that supports the drain pan, and an intake ventilation path and an exhaust ventilation path near the heat exchanger by integral molding, A heat exchanger and a drain pan are incorporated, and the chamber structure is provided with an outer step on the heat exchanger mounting side and the drain tray mounting side so that the drain pan is received outside the step. It is possible to configure so that there is no gap for causing the drainage, and it becomes easy for the drain to be received in the drain pan by the step.
[0026]
In addition, the drain pan has a drain connection port, and is connected to the suction connection port that communicates with the intake connection port and sucks outdoor air through the duct, and the discharge side duct connection that communicates with the exhaust connection port and exhausts room air through the duct Since it has an intake / exhaust frame with an outlet, a drainage connection port, and an external drainage connection part that is communicated via a drain connection pipe having a flexible structure, only the intake / exhaust frame is attached first, and the necessary work is completed. Thus, the main casing can be attached.
[0027]
Embodiment 4 FIG.
This embodiment relates to a connection structure between the drain pan 10 and the external drainage connection portion 27 of the intake / exhaust frame 21 in the air-conditioning ventilation fan shown in the third embodiment. That is, as shown in FIGS. 12 and 13, a bowl-shaped recess 31 is formed on the bottom surface of the drain pan 10 facing the inner drain port 30, and a ring-shaped elastic seal member is formed at the rim of the inner drain port 30. 32 is mounted. As shown in FIG. 12, the drain connecting pipe 29 that connects the drain tray 10 and the intake / exhaust frame 21 to guide the drain of the drain tray 10 to the outside has a large outer diameter that fits into the recess 31 of the drain tray 10. This is a configuration in which a small-diameter conduit portion having a flexible structure that can be inserted into the drain pipe connection port 15 of the drain pan 10 is connected to the diameter portion 33. The length of the large-diameter portion 33 in the center line direction is set so as to fit into the recess 31 in a state where the elastic seal member 32 is compressed.
[0028]
According to the connection structure of the drain pan 10 portion configured as described above, the drain connecting pipe 29 is inserted from the drain pan 10 into the drain pipe connecting port 15 with the conduit portion first, and the large diameter portion 33 is pushed against the elastic seal member 32. If it fits in the recessed part 31 in the state compressed and applied, the drain connection pipe | tube 29 can be attached easily, easily and stably. That is, the elastic restoring force of the compressed elastic seal member 32 acts in a direction to push back the large diameter portion 33, and the end of the large diameter portion 33 is abutted and locked to the end surface of the recess 31. When it is necessary to remove the drain connection pipe 29 for maintenance of the heat exchanger 5 or the like, the elastic seal member 32 can be easily removed by compressing and removing it.
[0029]
By doing in this way, the drain pan has a drain pipe connection port, a recess is provided in the inner bottom of the drain pan, an elastic seal member is provided in the recess, and the drain pipe is connected by an elastic force acting in the axial direction of the elastic seal member. Since the drain pipe inserted through the mouth is connected to the drain pan, the drain pipe can be easily engaged and disengaged and the drain pipe is attached in a stable manner.
[0030]
Embodiment 5 FIG.
This embodiment relates to the structure of the external drainage connection portion 27 of the intake / exhaust frame 21 in the air-conditioning ventilation fan shown in the third embodiment. That is, as shown in FIGS. 14 to 17, the intake / exhaust frame 21 is provided with an outlet 34 through which the end of the drain connection pipe 29 is passed, and mounting portions 35 and 36 are formed on the outer left and right sides of the outlet 34 so as to face each other. Has been. One attachment portion 35 is formed by cutting and raising, and has an engagement portion 37 that is opened inward. The other attachment portion 36 is formed as a substantially trapezoidal bulge portion, and is provided with screw holes 38 at the top and bottom. The external drainage connection portion 27 includes an L-shaped tube 40 having a flange 39 at the base and a substantially C-shaped fixing bracket 41. An elastic sealing material 42 is bonded to the flange 39 of the L-shaped tube 40 so that it can be brought into close contact with the outer edge of the outlet 34. The fixing bracket 41 is attached to the notch 43 into which the L-shaped tube 40 is fitted, the latching portion to be inserted into the engaging portion 37 of one attachment portion 35, and the other attachment portion 36, and the attachment hole corresponding to the screw hole 38. It is a metal plate which consists of a fixed part which has.
[0031]
The L-shaped tube 40 in which the elastic sealing material 42 provided on the flange 39 is joined to the lip of the outlet 34 is pressed by the notch 43 of the fixing bracket 41 as shown in FIG. The elastic sealing material 42 is attached in a compressed state by inserting one attachment portion 35 into the engagement portion 37 and tightening the other attachment portion 36 with screws 44 and 45. The drain pipe 16 connected to the outside is connected to the L-shaped pipe 40.
[0032]
According to the external drainage connection portion 27 of this embodiment, as shown in FIGS. 14 and 15, the L-shaped tube 40 can be rotated and attached in any direction, and the drainage gradient of the drainage tube 16 can also be set freely. It becomes possible to do.
[0033]
By doing in this way, the external drainage connection part that leads the len to the outside and is connected to the drainage pipe is composed of a rotatable L-shaped pipe and a fixing means for fixing the L-shaped pipe. The degree of freedom in direction increases without using expensive parts.
[0034]
Embodiment 6 FIG.
This embodiment relates to the intake blower 3 and the exhaust blower 4 in the air-conditioning ventilation fan shown in the first embodiment and the third embodiment. That is, as shown in FIGS. 18 and 19, the intake blower 3 and the exhaust blower 4 are each constituted by a scroll 46, a sirocco blade 47 and a drive motor 48 which are formed as an integrally molded product made of resin. The suction port 49 in the scroll 46 communicates with the blade rotation space 50 from the center line direction, and the air outlet 51 is formed at a predetermined blowing position by a scroll-shaped guide portion 52 with a gentle gradient from the blade rotation space 50. As a result, the blowing position can be changed while suppressing pressure loss, and thus the apparatus can be downsized without degrading performance.
[0035]
In this way, the intake blower and the exhaust blower are composed of a sirocco blower in which the scroll outlet is connected by a guide portion that continues with a gentle gradient starting from the blade rotation space. Can be changed.
[0036]
【The invention's effect】
Provided drain pan rotatable below the heat exchanger, the axial struts that are connected to the side which faces the drain pan by providing the main body casing, and rotatably supported the drain pan axis strut Since at least one drainage pipe is provided, the drain pan located under the heat exchanger can be rotated to an unobstructed position with the drainage pipe connection port as an axis, especially during maintenance of the heat exchanger. Maintenance of the heat exchanger becomes easy.
[0037]
A rotatable drain pan is provided below the heat exchanger, and when the drain pan rotates, a partial ceiling surface is provided at the top of the lower end, so that a part of the drain pan is placed on the side, bottom and ceiling surfaces. Since the drain is held at the rotation position of the drain pan, even when the drain pan is rotated especially during maintenance of the heat exchanger, the drain pan is kept at the lower position of the drain pan at the rotation position. A container-like portion is formed by the ceiling surface, the side surface, and the bottom surface, and the drain does not easily flow out to the outside, so that the operation is easy.
[0038]
Further, the drain pan has a drain pipe connection port, a recess is provided in the inner bottom portion of the drain tray, an elastic seal member is provided in the recess, and the drain seal pipe is inserted into the drain pipe connection port by the elastic force acting in the axial direction of the elastic seal member. Since the drain pipe is configured to be connected to the drain pan, the drain pipe as a drain pipe connected to the drain pipe connection port by the elastic force acting in the axial direction of the elastic seal member on the drain pan is particularly connected. Therefore, the drainage pipe can be easily and easily engaged and disengaged, and the attached state of the drainage pipe is also stabilized.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an air-conditioning ventilation fan showing Embodiment 1 of the present invention.
FIG. 2 is a perspective view of an air-conditioning ventilation fan showing Embodiment 1 of the present invention.
FIG. 3 is a perspective view of a drain pan showing another embodiment 2 of the present invention.
FIG. 4 is a longitudinal sectional view of an air-conditioning ventilation fan showing another embodiment 2 of the present invention.
FIG. 5 is a perspective view of a drain pan showing another embodiment 2 of the present invention.
FIG. 6 is a plan view of a drain pan showing another embodiment 2 of the present invention.
FIG. 7 is a longitudinal side view of an air-conditioning ventilation fan showing another embodiment 3 of the present invention.
FIG. 8 is an explanatory diagram when the air-conditioning ventilation fan of FIG. 7 is attached.
FIG. 9 is an exploded perspective view of a chamber structure showing Embodiment 3 of the present invention.
FIG. 10 is a longitudinal side view of a chamber structure showing a third embodiment of the present invention.
FIG. 11 is a longitudinal front view of a chamber structure showing a third embodiment of the present invention.
FIG. 12 is an enlarged exploded perspective view of a drain pan portion of an air-conditioning ventilation fan showing Embodiment 4 of the present invention.
FIG. 13 is an enlarged perspective view of a drain pan portion showing Embodiment 4 of the present invention.
FIG. 14 is a rear view of an air-conditioning ventilation fan according to Embodiment 5 of the present invention.
FIG. 15 is a rear view of an air-conditioning ventilation fan according to Embodiment 5 of the present invention.
16 is an enlarged exploded perspective view of a portion indicated by an arrow A in FIG.
FIG. 17 is an enlarged cross-sectional view of an arrow A part in FIG.
FIG. 18 is a perspective view showing a scroll of a blower of an air-conditioning ventilation fan according to Embodiment 6 of the present invention.
FIG. 19 is a cross-sectional view showing a configuration of a blower of an air-conditioning ventilation fan according to Embodiment 6 of the present invention.
FIG. 20 is a longitudinal sectional view showing a configuration of a conventional air-conditioning ventilation fan.
[Explanation of symbols]
2 Body casing, 3 Intake air blower, 4 Exhaust air blower, 5 Heat exchanger, 6 Intake air passage, 7 Exhaust air passage, 10 Drain pan, 11 Holding part, 12 Intake connection port, 13 Exhaust connection port, 15 Drain connection port , 16 Drain pipe, 17 Ceiling surface, 18 Container-like part, 20 Chamber structure, 21 Intake / exhaust frame, 23 Stepped part, 27 External drain connection part, 29 Drain connection pipe, 31 Recessed part, 32 Elastic seal member, 33 Large diameter Part, 40 L-shaped pipe, 41 fixing bracket, 46 scroll, 51 outlet, 52 guide part.

Claims (3)

An intake blower that sucks outdoor air from the intake connection port and an exhaust blower that exhausts indoor air from the exhaust connection port are incorporated in the main body casing, and a part of the working fluid of the heat exchanger is partly disposed on the discharge side of the intake blower An air intake passage that opens to a room constituted by a passage is provided and is blown into the room from an intake air outlet, and a part of the intake side of the exhaust air blower is opened to the room constituted by the other working fluid passage of the heat exchanger. An air-conditioning ventilation fan that provides an exhaust ventilation path and sucks from an exhaust suction port,
The rotatable drain pan provided below the heat exchanger, the axial struts that are connected to the side which faces the drain pan by providing the main body casing, and rotatably supported to the drain pan, wherein An air-conditioning ventilation fan characterized in that a drain pipe is provided on at least one of the shaft support members. An intake blower that sucks outdoor air from the intake connection port and an exhaust blower that exhausts indoor air from the exhaust connection port are incorporated in the main body casing, and a part of the working fluid of the heat exchanger is partly disposed on the discharge side of the intake blower An air intake passage that opens to a room constituted by a passage is provided and is blown into the room from an intake air outlet, and a part of the intake side of the exhaust air blower is opened to the room constituted by the other working fluid passage of the heat exchanger. An air-conditioning ventilation fan that provides an exhaust ventilation path and sucks from an exhaust suction port,
A rotatable drain pan is provided below the heat exchanger, and when the drain pan rotates, a partial ceiling surface is provided on the upper portion of the lower end so that a part of the drain pan is disposed on the side surface and the bottom surface. And an air-conditioning ventilator characterized in that the drain is held at the rotational position of the drain pan. The drain pan has a drain pipe connection port, a recess is provided in the inner bottom of the drain tray, an elastic seal member is provided in the recess, and the drain seal pipe is inserted into the drain pipe connection port by an elastic force acting in the axial direction of the elastic seal member. The air-conditioning ventilation fan according to any one of claims 1 to 2, wherein the drainage pipe is configured to be connected to the drain pan.

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