JP2013164172A - Simultaneous air supply/exhaust ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simultaneous air supply/exhaust ventilator that has improved maintainability of a heat exchanger by facilitating construction of a ceiling panel of the simultaneous air supply and exhaust ventilator.SOLUTION: A simultaneous air supply/exhaust ventilator includes a separator 12 for preventing a suction air flow A1 and a discharge air flow B2 from making contact with each other, and adjusting a space between an external casing 1 and a ceiling panel 3 by expanding and contracting according to a position of a panel external frame 2. The separator 12 expands and contracts by coupling a plurality of separator bodies 25 and 26 with each other to be movable in a vertical direction, and is integrated with the panel external frame 2.

Description

  The present invention relates to a simultaneous supply / exhaust ventilation fan.

  In order to realize ventilation with little fluctuation of indoor temperature and humidity, there is a method of simultaneous supply / discharge while attaching a simultaneous supply / exhaust type ventilation fan to the ceiling and exchanging heat.

  As such a simultaneous supply / exhaust type exhaust fan, “an exterior casing in which an exhaust ventilation path and an air supply ventilation path independent from each other are formed, a panel suction port and a panel outlet are provided below the exterior casing are provided. A ceiling panel, a panel exterior frame provided between the exterior casing and the ceiling panel, and a suction airflow accommodated in the exterior casing and sucked into the panel suction port to the exhaust blower, An exhaust blower that exhausts the air supply, and an air supply blower that sends the air supply air supplied to the air supply passage to the panel outlet and blows out as a blown air flow, and a heat exchanger. There is one in which heat exchange is performed between a supply airflow and a suction airflow from a room using a heat exchanger (see, for example, Patent Document 1 and Patent Document 2).

  In this simultaneous supply / exhaust ventilation fan, a separator is provided so that the suction airflow and the blowout airflow do not intersect in the vicinity of the ceiling panel, and the flow paths are separated. This separator has a structure in which two long plate-like separator bodies are combined so as to be movable in the vertical direction. In addition to the function of separating the flow paths, the separator is installed in the gap between the exterior casing and the ceiling surface. In addition, it has a function to adjust the vertical position of the ceiling panel. By configuring the separator in this way, when the thickness of the ceiling surface is not constant, the ceiling panel is fixed at a position that protrudes too much from the ceiling surface, or the ceiling panel is fixed at a position that is retracted into the ceiling surface. It is possible to prevent.

International Publication No. 2010/097883 International Publication No. 2010/097884

  However, in Patent Document 1 and Patent Document 2, the two separator bodies constituting the separator are structured to be fixed separately after the panel exterior frame is attached. Therefore, when constructing the ceiling panel, it is necessary to attach many parts, the construction method becomes complicated, and there is a problem that the construction time of the ceiling panel becomes long.

  The present invention has been made in view of the above, and an object thereof is to obtain a simultaneous supply / exhaust ventilation fan capable of facilitating the construction of a ceiling panel.

  The simultaneous supply / exhaust type exhaust fan according to the present invention includes an exhaust ventilation path and an air supply ventilation path that are independent from each other, and is provided on an exterior casing that is installed on the ceiling and below the exterior casing, and communicates with the exhaust ventilation path. A ceiling panel that forms a suction port and an air outlet that communicates with the air supply ventilation path; a panel exterior frame that is provided between the exterior casing and the ceiling panel and that can adjust the distance between the exterior casing and the exterior casing; The exhaust air flow that is housed in the suction port and sent to the exhaust ventilation path and exhausted as an exhaust flow, and the supply air stream that is housed in the exterior casing and is supplied to the supply air ventilation path at the outlet The air blower for feeding and blowing out as a blown airflow, the heat exchanger for performing heat exchange between the exhaust flow and the airflow, and preventing the suction airflow and the blown airflow from crossing, position And a separator that can adjust the distance between the outer casing and the ceiling panel. The separator is configured to extend and contract by connecting a plurality of separator bodies so as to be movable in the vertical direction. It is provided integrally with the exterior frame.

  ADVANTAGE OF THE INVENTION According to this invention, the number of parts handled in the case of construction of a ceiling panel can be reduced, and it becomes possible to construct a ceiling panel easily.

It is the perspective view which showed the external appearance structure of the simultaneous supply / discharge type ventilation fan which concerns on embodiment of this invention. It is a perspective view which shows the state at the time of use of the simultaneous supply / exhaust type ventilation fan of FIG. It is sectional drawing which cut | disconnects and shows the simultaneous supply / exhaust type ventilation fan of FIG. 1 along the direction through which the suction airflow A1 and the blowing airflow B2 flow. It is a perspective view from the lower surface side which shows an example of an internal structure of the simultaneous supply / exhaust type ventilation fan of FIG. 1 seeing through. It is a perspective view from the lower surface side which cuts out and shows an example of an internal structure of the simultaneous supply / exhaust type ventilation fan of FIG. It is a perspective view which decomposes | disassembles and shows schematic structure of the decorative panel of the simultaneous supply / exhaust type ventilation fan which concerns on embodiment of this invention. It is sectional drawing which shows typically an example of the arrangement | positioning state of the separator 12 of the simultaneous supply / exhaust type ventilation fan of FIG. 5, the air supply chamber 15a, and the exhaust chamber 15b. It is a cross-sectional perspective view of the cross-sectional part Y of the decorative panel of FIG. It is sectional drawing which looked at the cross-sectional part X of the decorative panel of FIG. 6 from the arrow X1 direction. It is sectional drawing which looked at the cross-section part Y of the decorative panel of FIG. 6 from the arrow Y1 direction.

  Embodiments of a simultaneous supply / exhaust ventilation fan according to the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this Embodiment.

FIG. 1 is a perspective view showing an external configuration of a simultaneous supply / exhaust type ventilation fan according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state when the simultaneous supply / exhaust type ventilation fan of FIG. 1 is used. FIG. 3 is a cross-sectional view showing the simultaneous supply / exhaust type ventilation fan of FIG. 1 cut along the flow direction of the suction airflow A1 and the blowout airflow B2.
In FIG. 1, a simultaneous supply / exhaust ventilation fan is provided with a box-shaped outer casing 1 having six surfaces as a ventilation fan body, and a ceiling panel serving as a decorative panel via a panel outer frame 2 below the outer casing 1. 3 is attached. The panel exterior frame 2 is configured in a rectangular tube shape.

  On the side surface of the exterior casing 1, there are provided an exhaust port SO for exhausting the exhaust flow A <b> 2 out of the exterior casing 1 and an air supply port SI for supplying the airflow B <b> 1 into the exterior casing 1. Further, a panel suction port UI for sucking the suction airflow A1 and a panel outlet UO for blowing the blowout airflow B2 are formed between the outer peripheral portion below the outer casing 1 and the ceiling panel 3. In addition, the formation position of the panel suction inlet UI and the panel blower outlet UO is not restricted to this position, It is good also as a structure provided in the ceiling panel 3. FIG.

  In the outer casing 1, an exhaust ventilation path 14 a that constitutes a ventilation path between the panel suction port UI and the exhaust outlet SO, and an air supply path that constitutes a ventilation path between the supply port SI and the panel outlet UO. The ventilation path 14b is provided independently of each other.

  When this simultaneous supply / exhaust ventilation fan is installed indoors, as shown in FIG. 2, the exterior casing 1 is arranged behind the ceiling such that the ceiling panel 3 projects from the ceiling surface T to the indoor side.

  When the indoor suction airflow A1 is sucked from the panel suction port UI, the suction airflow A1 is guided into the outer casing 1. And the suction | inhalation airflow A1 guide | induced in the exterior casing 1 is guide | induced to the exhaust port SO by passing the exhaust ventilation path 14a, and is exhausted outdoors as the exhaust flow A2.

  At the same time, when the outdoor air supply air B1 is supplied from the air supply port SI, the air supply air B1 is guided into the outer casing 1. Then, the air supply air B1 guided into the outer casing 1 is guided to the panel outlet UO by passing through the air supply passage 14b, and is blown into the room as the air flow B2.

  4 is a perspective view from the lower surface side showing an example of the internal configuration of the simultaneous supply / exhaust type ventilation fan of FIG. 1, and FIG. 5 is a cutaway example of the internal configuration of the simultaneous supply / exhaust type ventilation fan of FIG. 4. It is a perspective view from the lower surface side shown. 4 and 5, the upper part in the figure is the lower surface side.

  4 and 5, a suction airflow A1 sucked into the panel suction port UI is taken into the outer casing 1 on the lower surface of the outer casing 1, or a supply airflow B1 sucked into the outer casing 1 is taken into the outer casing 1. A main body opening 4 for discharging to the outside is formed. A ceiling panel 3 is attached below the exterior casing 1 via the panel exterior frame 2 so as to cover the main body opening 4 from below. Further, although not shown in detail in FIG. 5, the panel exterior frame 2 is prevented from intersecting the suction airflow A1 sucked from the panel suction inlet UI and the blowout airflow B2 blown from the panel outlet UO. A separator 12 is provided. Separator 12 can be constituted by a partition plate or a partition, and is arranged so as to be orthogonal to the suction direction of suction airflow A1 and the blowing direction of blowing airflow B2. Details of the separator 12 will be described again.

  Moreover, in the panel exterior frame 2, the wall surface which restricts the advancing direction along the ceiling panel 3 of the suction | inhalation airflow A1 and the blowing airflow B2 to one direction at the both ends of the direction orthogonal to the direction of the exhaust flow A2 and the supply airflow B1. 2a and 2b (see FIG. 5 and FIG. 6 described later) are formed.

  Further, the exterior casing 1 is partitioned so that the exhaust flow A2 exhausted from the exhaust port SO and the supply air flow B1 supplied from the air supply port SI do not intersect in the exterior casing 1. As shown in FIG. 3, an exhaust ventilation path 14a and an air supply ventilation path 14b are formed in the outer casing 1 independently of each other. The exterior casing 1 accommodates an exhaust fan 7a, an air supply fan 7b, a heat exchanger 9, and a circuit unit case 10. Here, the exhaust fan 7a is disposed in the exhaust ventilation path 14a. The air supply blower 7b is disposed in the air supply ventilation path 14b. The heat exchanger 9 is disposed in the exhaust ventilation path 14a and the supply air ventilation path 14b.

  The exhaust blower 7a sends the suction airflow A1 sucked into the panel suction port UI to the exhaust ventilation path 14a and exhausts it from the exhaust port SO as the exhaust flow A2. The exhaust fan 7a includes an exhaust blade 6a that forms an exhaust flow A2, an exhaust motor 5a that rotates the exhaust blade 6a, and a spiral that is configured to surround the exhaust blade 6a and the exhaust motor 5a. And an exhaust fan casing 8a.

  Further, the air supply blower 7b sends the air supply air B1 supplied from the air supply port SI to the air supply passage 14b to the panel outlet UO and blows out as the outlet air flow B2 from the panel outlet UO. The air supply fan 7b includes an air supply blade 6b that forms the air supply air flow B1, an air supply motor 5b that rotates the air supply blade 6b (see FIG. 3), the air supply blade 6b, and the air supply And a spiral air supply fan casing 8b configured to surround the motor 5b. The air supply fan casing 8 b is formed with a blower outlet 17 that blows out the air supply air B <b> 1 so as to face the ceiling panel 3.

  As shown in FIG. 5, the heat exchanger 9 has a hexahedral structure in which ventilation paths orthogonal to each other are alternately stacked, and the stacking direction is orthogonal to the directions of the exhaust air flow A2 and the supply air flow B1 ( It arrange | positions in the exterior casing 1 so that it may become left-right direction in FIG. Then, the exhaust flow A2 that is sucked from the panel suction port UI and guided to the exhaust port SO passes through one ventilation path (the ventilation path extending in the vertical direction in FIG. 5) in the heat exchanger 9, and the other ventilation path ( In FIG. 5, the air supply air B1 supplied from the air supply port SI passes through the ventilation path extending in the front-rear direction. As described above, the exhaust flow A2 and the supply airflow B1 pass through the heat exchanger 9, so that heat exchange is performed between the two airflows.

  Here, the supply port SI and the exhaust port SO are arranged side by side so as to open in a direction parallel to the suction direction of the suction airflow A1 and the blowout direction of the blowout airflow B2. Further, the air inlet SI, the heat exchanger 9 and the air supply fan 7b are arranged in this order along the suction direction of the suction airflow A1 and the blowout direction of the blowout airflow B2. Further, the exhaust port SO, the exhaust fan 7a, and the circuit unit case 10 are arranged in this order along the suction direction of the suction airflow A1 and the blowout direction of the blowout airflow B2. That is, the heat exchanger 9 and the circuit unit case 10 are arranged at one diagonal position of the outer casing 1, and the air supply fan 7 b and the exhaust fan 7 a are arranged at the other diagonal position of the outer casing 1. Has been.

  Further, the exhaust blade 6a is generally disposed at a position on an extension line of the heat exchanger 9 in the stacking direction. The exhaust motor 5a is disposed on the heat exchanger 9 side. The exhaust fan casing 8a is connected to the exhaust port SO.

  Further, an air supply side dust removal filter 16 (see FIG. 4) for removing dust from the air supply air B1 is installed between the air supply port SI and the heat exchanger 9. Further, the space under the outer casing 1 partitioned by the panel outer frame 2 is divided into two by the separator 12, so that the exhaust chamber 15b leading to the exhaust vent passage 14a and the supply chamber 15a leading to the supply vent passage 14b. And are formed.

  When the exhaust vane 6a and the supply vane 6b are respectively rotated by the exhaust motor 5a and the supply motor 5b, the indoor intake airflow A1 is horizontal along the ceiling surface T from the panel intake port UI. While being sucked in, the outdoor air supply air B1 is supplied from the air supply port SI.

  Then, when the suction airflow A1 is sucked horizontally along the ceiling surface T from the panel suction port UI, the forward direction is blocked by the separator 12 as shown in FIG. And is led to the heat exchanger 9 as an exhaust stream A2. Further, when the outdoor airflow B1 is sucked from the air supply port SI, the heat exchanger 9 is installed in front of the air supply port SI, and therefore the airflow B1 is guided to the heat exchanger 9. When the exhaust flow A2 and the supply airflow B1 are guided to the heat exchanger 9, the exhaust flow A2 flows into the exhaust fan 7a after the total heat exchange is performed between the exhaust flow A2 and the supply airflow B1. At the same time, the air supply air B1 flows into the air supply fan 7b. Here, by causing the heat exchanger 9 to perform heat exchange between the exhaust air flow A2 and the supply air flow B1, exhaust heat can be recovered, and a load on air conditioning can be reduced.

  Then, when the exhaust flow A2 flows into the exhaust fan 7a, as shown in FIGS. 4 and 5, the exhaust fan A is guided in the direction of the exhaust port SO by the exhaust fan 7a and exhausted from the exhaust port SO to the outside. On the other hand, when the air supply air B1 flows into the air supply blower 7b, the air supply blower 7b guides the air supply B1 in the direction of the ceiling panel 3 and sends it out through the air blower outlet 17 as shown in FIG. And when supply air flow B1 is sent out via the blower blower outlet 17, the front will be blocked | closed by the ceiling panel 3, the side will be blocked | closed by wall surface 2a, 2b (refer FIG. 5), and the back will be a separator. Since it is blocked at 12, it is blown out into the room as a blown air flow B2 from the panel outlet UO.

  Then, the suction airflow A1 horizontally sucked from the panel suction port UI is changed to a vertical direction by the separator 12, and is guided to the exhaust ventilation path 14a of the outer casing 1 through the exhaust chamber 15b. On the other hand, the air flow B1 sent vertically from the blower outlet 17 is horizontally changed in the ceiling panel 3 and blown horizontally into the room as the blowout air B2 from the panel outlet UO.

  FIG. 6 is an exploded perspective view showing a schematic configuration of the decorative panel of the simultaneous supply / exhaust ventilation fan according to the embodiment of the present invention. FIG. 7 is a cross-sectional view schematically showing an example of an arrangement state of the separator 12 of the simultaneous supply / exhaust type ventilation fan of FIG. 5 and the supply chamber 15a and the exhaust chamber 15b. 8 is a cross-sectional perspective view of the cross-section Y of the decorative panel of FIG. 9 is a cross-sectional view of the cross section X of the decorative panel of FIG. 6 as viewed from the direction of the arrow X1. FIG. 10 is a cross-sectional view of the cross section Y of the decorative panel of FIG. 6 as viewed from the direction of the arrow Y1.

  As shown in FIG. 7, a panel mounting bracket 21 is provided on the lower surface of the outer casing 1, and the panel mounting bracket 21 is fixed to the outer casing 1.

  And the panel exterior frame 2 is attached to the panel mounting bracket 21 so that it can move up and down with respect to the panel mounting bracket 21. Here, the outer frame of the panel outer frame 2 can be configured such that the panel outer frame 2 and the panel mounting bracket 21 can be shifted up and down while being in close contact with the panel mounting bracket 21.

  Further, as described above, wall surfaces 2a and 2b are formed on both sides of the panel exterior frame 2 to restrict the advancing direction along the ceiling panel 3 of the suction airflow A1 and the blown airflow B2 in one direction. Then, the ceiling panel 3 is fixed to the panel exterior frame 2 so that the vicinity of both ends of the ceiling panel 3 is supported by the wall surfaces 2a and 2b. A panel outlet UO is formed between the panel exterior frame 2 and the ceiling panel 3. As described above, the positions at which the panel inlets UI and the panel outlets UO are formed are not limited to these positions, and may be configured to be provided on the ceiling panel 3.

  Here, in order to restrict (guide) the movable direction of the panel exterior frame 2 relative to the panel mounting bracket 21 only in the vertical direction, the pair of side surfaces (left and right side surfaces in FIG. Two pieces 22 are formed in the vertical direction. Further, two projections 24 that can be fitted into the groove 22 are formed on each of a pair of side surfaces (left and right side surfaces in FIG. 6) facing each other in the panel exterior frame 2 corresponding to the grooves 22. In addition, a rail may be formed in the panel mounting bracket 21 and a groove may be formed in the panel exterior frame 2.

  Further, as described above, the separator 12 for preventing the suction airflow A1 sucked from the panel suction port UI and the blown airflow B2 blown from the panel blower outlet UO from intersecting with the panel exterior frame 2 is integrated. Is provided. The separator 12 is arranged so that the opening in the panel outer frame 2 is divided into two in the front-rear direction in FIG. 6, and the arrangement position in the front-rear direction is the heat exchanger when the heat exchanger 9 is attached and removed. 9 is a position that does not interfere with 9. That is, as shown in FIG. 3, the separator 12 is located at a position that is not directly below the heat exchanger 9 when the simultaneous supply / exhaust ventilation fan is installed (when viewed from the front of the ceiling panel, the heat exchanger 9 and the separator 12 Are arranged at positions that do not overlap with each other. By arranging the separator 12 and the heat exchanger 9 in such a positional relationship, maintenance work can be performed without removing the separator 12 during maintenance of the heat exchanger 9.

  The separator 12 expands and contracts in accordance with the position of the panel exterior frame 2, and the interval between the exterior casing 1 and the ceiling panel 3 can be adjusted. Specifically, a plurality of long plate-like (here, two) separator bodies 25 and 26 are connected to each other while being in surface contact so that the overall vertical length can be changed. It is configured. Hereinafter, the separator bodies 25 and 26 will be described in order.

  The separator body 25 is disposed in the panel exterior frame 2 along the opening direction of the panel exterior frame 2, and is fixed to the panel exterior frame 2 at both ends in the longitudinal direction.

  Further, the separator body 26 is slidably connected to the separator body 25 so as to be displaced from each other in a state where the surfaces overlap and are in close contact with the separator body 25. Specifically, as shown in FIG. 8, this connection structure is a structure in which a slide projection 25a and a slide groove 26a are provided on the close contact surfaces of the separator body 25 and the separator body 26, and these are slidably fitted to each other. It has become.

  In addition, as shown in FIG. 9, elastically movable engaging pieces 26 b are provided at the lower ends of both ends of the separator body 26 in the longitudinal direction. The engagement pieces 26b are formed so as to protrude obliquely upward outward from the lower ends of both ends of the separator body 26 in the longitudinal direction. Further, at both ends of the separator body 25 in the longitudinal direction (left and right direction in FIG. 6), surfaces 25b extending in a direction orthogonal to the separator body 25 are provided, and the upper ends of the surfaces 25b protrude inward, and the separator body A locking projection 25c is provided to lock the 26 engaging pieces 26b.

  Since the separator body 25 and the separator body 26 are configured as described above, when the panel outer frame 2 is slid in a direction away from the outer casing 1 (downward in a ceiling-mounted state), the engaging piece 26b is engaged. It is caught by the stop protrusion 25c, and the downward sliding movement of the separator body 25 is restricted. Therefore, the engagement piece 26 b functions as a lower limit stopper for the separator body 25.

  Further, as shown in FIG. 10, a stopper 26 c that protrudes toward the separator body 25 is provided at the upper end of the separator body 26. Therefore, when the panel outer frame 2 is slid in the direction approaching the outer casing 1 (upward in the ceiling installation state), the upper end portion of the separator body 25 abuts against the stopper 26c of the separator body 26. Therefore, the stopper 26 c functions as a lower limit stopper for sliding movement of the separator body 25. Thus, when the position is adjusted by moving the panel outer frame 2 in the vertical direction by the stopper that regulates the vertical movement range of the panel outer frame 2, it is possible to prevent the separator body 25 from sliding more than necessary. it can.

  As described above, the space between the exterior casing 1 and the ceiling panel 3 can be adjusted by configuring the panel exterior frame 2 and the panel mounting bracket 21 so as to be shifted vertically. For this reason, the vertical position of the ceiling panel 3 can be adjusted in accordance with the gap between the exterior casing 1 and the ceiling surface T (see FIG. 2) during installation, and when the thickness of the ceiling surface T is not constant, It is possible to prevent the ceiling panel 3 from being fixed at a position where it protrudes too much from the ceiling surface T, or the ceiling panel 3 from being fixed at a position retracted by the ceiling surface T.

Next, the procedure at the time of ceiling installation is demonstrated with reference to FIG.
After fixing the outer casing 1 in the ceiling with a suspension bolt (not shown), the panel mounting bracket 21 is fixed to the lower surface of the outer casing 1 with four screws 31. Next, the panel outer frame 2 is pushed upward while fitting the projections 24 of the panel outer frame 2 into the grooves 22 of the panel mounting bracket 21, and the panel outer frame 2 is attached to the panel with four adjustment screws 32 having a long screw length. Temporarily fixed to the lower surface of the metal fitting 21. Next, the flange surface 26 d provided at the end of the separator body 26 on the outer casing 1 side is fixed to the outer casing 1 with two screws 33. The vertical position of the panel exterior frame 2 relative to the panel mounting bracket 21 can be slid and fixed by tightening the temporarily fixed adjustment screw 32, so that the vertical direction is adjusted with the adjustment screw 32, and the panel exterior frame 2 is attached to the ceiling surface T ( (See Fig. 2). Finally, the ceiling panel 3 is attached to the panel exterior frame 2 to complete the construction.

  As described above, according to this embodiment, when the ceiling panel 3 is constructed on the ceiling by integrating the separator 12 composed of the plurality of separator bodies 25 and 26 into the panel exterior frame 2, the panel At the same time that the exterior frame 2 is attached, the attachment of the separator 12 is completed. Therefore, compared with the structure which comprises a separator from the some separator body separate from the panel exterior frame 2, construction time can be shortened and construction work can be facilitated.

  In addition, by making the separator 12 integral with the panel exterior frame 2, it is possible to prevent mistakes or forgetting to install the separator body and to ensure a reliable supply and discharge partition compared to the case where it is configured separately. It becomes.

  In addition, since the separator 12 is arranged at a position that does not interfere with the attachment and removal of the heat exchanger 9, it is not necessary to remove the separator 12 during maintenance of the heat exchanger 9. Therefore, the parts to be removed at the time of maintenance of the heat exchanger 9 are reduced, the maintenance workability of the heat exchanger 9 can be improved, and the maintenance work that is a high place work on the ceiling can be facilitated.

  In the present embodiment, an example in which the separator 12 is configured by two separators has been described. However, the number of separators is not limited to two, and a plurality of separators may be configured.

  As described above, the simultaneous supply / exhaust ventilation fan according to the present invention is suitable for a method for facilitating the work of installing the ceiling panel and improving the maintenance workability of the heat exchanger.

  DESCRIPTION OF SYMBOLS 1 exterior casing, 2 panel exterior frame, 2a wall surface, 3 ceiling panel, 4 main body opening part, 5a exhaust motor, 5b supply motor, 6a exhaust blade, 6b supply blade, 7a exhaust fan, 7b supply Air blower, 8a exhaust fan casing, 8b air supply fan casing, 9 heat exchanger, 10 circuit case, 12 separator, 14a exhaust air passage, 14b air supply air passage, 15a air supply chamber, 15b exhaust chamber, 16 Air supply side dust removal filter, 17 Blower outlet, 21 Panel mounting bracket, 22 groove, 24 protrusion, 25 separator body, 25a slide protrusion, 25b surface, 25c locking protrusion, 26 separator body, 26a slide groove, 26b engagement Piece, 26c Stopper, 26d Flange surface, 31 screw, 32 adjustment screw, 33 screw, A1 Intake air Flow, A2 exhaust flow, B1 supply airflow, B2 blowout airflow, SI air supply port, SO exhaust port, T ceiling surface, UI panel suction port, UO panel blowout port.

Claims (4)

An exterior casing installed on the ceiling, in which an exhaust ventilation path and an air supply ventilation path independent from each other are formed;
A ceiling panel provided below the outer casing and forming a suction port communicating with the exhaust ventilation path and a blowout opening communicating with the air supply ventilation path;
A panel exterior frame provided between the exterior casing and the ceiling panel, and capable of adjusting a distance between the exterior casing;
An exhaust blower that is housed in the exterior casing and sends the suction airflow sucked into the suction port to the exhaust ventilation path and exhausts it as an exhaust flow;
An air supply blower that is housed in the outer casing and sends an air supply air supplied to the air supply passage to the air outlet and blows out as an air flow;
A heat exchanger that exchanges heat between the exhaust stream and the supply airflow;
A separator that prevents the suction airflow and the blown airflow from intersecting, expands and contracts in accordance with the position of the panel exterior frame, and can adjust the interval between the exterior casing and the ceiling panel,
The simultaneous supply / exhaust type exhaust fan, wherein the separator is configured to expand and contract by connecting a plurality of separator bodies so as to be movable in the vertical direction, and is provided integrally with the panel outer frame.   The simultaneous supply / exhaust ventilation fan according to claim 1, wherein the heat exchanger can be removed from the outer casing without removing the separator.   The simultaneous supply / exhaust ventilation fan according to claim 2, wherein the heat exchanger and the separator are arranged so as to be displaced from each other so as not to overlap each other in a plan view from the front of the ceiling panel.   The ceiling panel is fixed below the panel exterior frame, and the separator includes a stopper that regulates a vertical movement range when the panel exterior frame is moved in the vertical direction during the ceiling panel construction to adjust the position. The simultaneous supply / exhaust type exhaust fan according to any one of claims 1 to 3, wherein the simultaneous supply / exhaust ventilation fan is provided.

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