JP2010236812A - Ventilation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation device easy in attaching and detaching a filter. <P>SOLUTION: This heat exchange type ventilation device 1A has an OA filter 8 vertically attached. The OA filter 8 is attachable and detachable while moved in the vertical direction by opening an attachment/detachment opening cover 30 of a front panel 3. An RA filter 9 is attached on a suction opening cover 32 for opening and closing the front pane 3. The RA filter 9 can be attached and detached to the suction opening cover 32 by opening the suction opening cover 32. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ventilator that sucks outside air and supplies it to the room, and sucks indoor air and exhausts it to the outside.

  As a ventilator for ventilating a room, a ventilator that sucks in outside air and supplies the air into the room, and sucks indoor air and exhausts it to the outside has been proposed (for example, see Patent Document 1).

  In addition, a heat exchange type ventilator including a heat exchange element that exchanges heat between outside air and room air has been proposed. In the heat exchange type ventilator, an air supply side filter is attached to face the outside air intake of the heat exchange element. Further, an exhaust-side filter is attached to face the air intake from the room in the heat exchange element. And both the supply side and exhaust side filters are detachable from the lower side of the apparatus.

JP 2007-24415 A

  A ventilation device attached to the ceiling of a building has a front panel attached to a portion exposed to the ceiling. However, the conventional ventilation device has a problem that workability is poor because the filter needs to be attached and detached with the entire front panel removed.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a ventilation device in which a filter can be easily attached and detached.

  In order to solve the above-described problem, a ventilating apparatus according to the present invention includes a main body portion and a front panel attached to the lower side of the main body portion. The front panel includes a first filter mounting portion to which a first filter that allows outside air sucked from the suction port to pass is detachably mounted, and a return air suction port for sucking indoor air by an exhaust fan. An attachment / detachment port cover capable of opening / closing an attachment / detachment port to / from which the first filter attached to / from is opened and closed, a suction grille connected to the return air suction port, and an opening / closing suction port cover, provided in the suction port cover, And a second filter mounting portion to which a second filter that allows passage of indoor air sucked into the return air suction port from the suction grille is detachably mounted.

  In the ventilation device of the present invention, the first filter can be attached and detached from the lower surface of the main body by opening the attachment / detachment opening cover of the front panel. Further, the second filter can be detached from the suction port cover by opening the suction port cover of the front panel.

  In the ventilation device of the present invention, the filter can be attached and detached without removing the entire front panel from the outside of the device, so that workability is improved.

It is a perspective view which shows an example of the heat exchange type | mold ventilation apparatus of this Embodiment. It is an internal block diagram which shows an example of the heat exchange type | mold ventilation apparatus of this Embodiment. It is a perspective view which shows an example of the front panel of this Embodiment. It is a perspective view which shows an example of RA filter of this Embodiment. It is a perspective view which shows an example of the suction inlet cover of this Embodiment. It is a perspective view which shows an example of the suction inlet cover of this Embodiment. It is operation | movement explanatory drawing which shows the attachment or detachment operation | movement of RA filter of this Embodiment. It is sectional drawing which shows an example of the latching tool of this Embodiment. It is sectional drawing which shows the suction prevention structure of RA filter of this Embodiment. It is a principal part enlarged view which shows the fixed structural example of the OA filter of this Embodiment. It is operation | movement explanatory drawing which shows the example of fixing operation | movement of the OA filter of this Embodiment. It is operation | movement explanatory drawing which shows the example of fixing operation | movement of the OA filter of this Embodiment.

  Hereinafter, a heat exchange type ventilator as an embodiment of the ventilator of the present invention will be described with reference to the drawings.

<Example of configuration of heat exchange type ventilator according to the present embodiment>
FIG. 1 is a perspective view showing an example of the heat exchange type ventilator of the present embodiment, FIG. 2 is an internal configuration diagram showing an example of the heat exchange type ventilator of the present embodiment, and FIG. It is the perspective view seen from the upper surface direction which shows an example of the front panel attached to the heat exchange type ventilation apparatus of a form.

  1 A of heat exchange type ventilators of this Embodiment are provided with the main-body part 2 and the front panel 3. FIG. 1 A of heat exchange type ventilation apparatuses are attached to the ceiling panel 101 in the form by which the main-body part 2 is embedded in the ceiling 100 of a building, and the front panel 3 is attached to the lower side of the main-body part 2. FIG. An attachment spring 39 for detachably attaching to the main body 2 is attached to the front panel 3.

  1 A of heat exchange type | mold ventilation apparatuses equip the main-body part 2 with the air supply fan 4SA which draws in external air OA from the outdoors and blows out supply air SA indoors. Further, the heat exchange type ventilation apparatus 1A includes an exhaust fan 4EA in the main body 2 that sucks the return air RA from the room and blows out the exhaust EA to the outdoors. Furthermore, the heat exchanging ventilator 1A has a heat exchange element 5 for exchanging heat between the outside air OA sucked from the outside by the supply fan 4SA and the return air RA sucked from the room by the exhaust fan 4EA. Prepare.

  The heat exchange element 5 has a rectangular parallelepiped shape in which a material forming the heat exchange air passage on the supply side and a material forming the heat exchange air passage on the exhaust side are stacked in a direction orthogonal to the air passage. In the heat exchange element 5, the outside air suction port 51OA and the supply air outlet 51SA of the heat exchange air passage on the air supply side are formed on one opposing surface of the rectangular parallelepiped shape, and the return air suction of the heat exchange air passage on the exhaust side An opening 51RA and an exhaust outlet 51EA are formed on the other opposing surface of the rectangular parallelepiped shape.

  The heat exchange element 5 includes an air that passes through the heat exchange air passage on the air supply side, and the heat exchange air passage on the air supply side and the heat exchange air passage on the exhaust side are partitioned by a partition wall that has heat conductivity and does not allow air to pass through. And the air passing through the heat exchange air passage on the exhaust side.

  The main body 2 includes an air path forming member 6 constituting an air supply air path 20SA and an exhaust air path 20EA, and a cabinet 7 in which the air path forming member 6 is accommodated. The air path forming member 6 includes an air supply fan case 40SA and an exhaust fan case 40EA made of, for example, a foam material.

  In the supply fan case 40SA, a fan suction port 42SA is formed in the upper portion along the axial direction of the supply fan 4SA, and a fan outlet 43SA is formed in the tangential direction of the supply fan 4SA. The exhaust fan case 40EA has a fan suction port 42EA formed in the upper portion along the axial direction of the exhaust fan 4EA, and is not shown in the tangential direction of the exhaust fan 4EA in the direction opposite to the fan outlet 43SA of the supply fan case 40SA. A fan outlet is formed.

  The fan motor 41M is a motor of both axes, the supply fan 4SA is attached to the lower shaft, the exhaust fan 4EA is attached to the upper shaft, and the supply fan 4SA and the exhaust fan 4EA are arranged coaxially. .

  In the heat exchanging ventilator 1A, when the supply fan 4SA and the exhaust fan 4EA are driven by a single fan motor 41M and the supply fan 4SA is driven to rotate, air is sucked from the fan intake port 42SA and blown into the fan. A supply air passage 20SA blown out from the outlet 43SA is formed. Further, when the exhaust fan 4EA is driven to rotate, an exhaust air passage 20EA is formed in which air is sucked from the fan suction port 42EA and blown out from a fan blowout port (not shown).

  In the air passage forming member 6, an air supply air passage forming space 44SA independent of the exhaust air passage 20EA is formed on the upstream side of the fan suction port 42SA of the air supply fan case 40SA. Further, the air path forming member 6 is a heat exchange element to which the heat exchange element 5 is attached downstream of the fan outlet 43SA of the supply fan case 40SA and upstream of the fan suction port 42EA of the exhaust fan case 40EA. A mounting space 45 is formed.

  The cabinet 7 has a rectangular parallelepiped shape with an open bottom surface, and is integrally formed of a resin material, for example. The cabinet 7 has an exhaust air blower (not shown) connected to an air intake port 70OA connected to the air supply air passage forming space 44SA on the suction side of the air supply air passage 20SA and a fan outlet of the exhaust fan case 40EA on the air outlet side of the exhaust air passage 20EA. The outlet is formed by providing an opening on one side surface in the longitudinal direction. Further, the cabinet 7 is formed with an air supply outlet 70SA connected to the heat exchange element mounting space 45 on the air supply air passage 20SA on the other side in the longitudinal direction.

  In the cabinet 7, an element support portion 71 that supports the heat exchange element 5 is integrally formed on the upper surface portion. The element support portion 71 is inclined along the flow of air sucked by the exhaust fan 4EA and constitutes a part of the exhaust air passage 20EA.

  Further, the cabinet 7 is configured such that a pressing member 72 that closes the opening on the lower surface of the air supply fan case 40SA is sandwiched, and a pressing sheet metal 73 is attached to the opening on the lower surface.

  The holding member 72 is integrally formed with an element support portion 72 a that supports the heat exchange element 5. The element support portion 72a is inclined along the fan outlet 43SA of the air supply fan case 40SA and constitutes a part of the air supply air passage 20SA.

  In the heat exchange ventilator 1 </ b> A, the heat exchange element 5 is attached to the heat exchange element attachment space 45 of the air passage forming member 6 accommodated in the cabinet 7. And if the press sheet metal 73 is attached to the opening part of the lower surface of the cabinet 7 in the form which pinches the press member 72, the heat exchange element 5 will be supported by the air path formation member 6, the cabinet 7, and the press member 72.

  When the presser plate 73 is attached to the opening on the lower surface of the cabinet 7, the main body 2 has a return air suction port 70 RA connected to the return air suction port 51 RA of the heat exchange element 5, and the other side surface of the cabinet 7 and the presser plate 73. Formed by a gap between the two.

  In the heat exchanging ventilator 1A, the opening on the lower surface of the cabinet 7 is covered with a pressing metal plate 73 formed of a strong metal plate material, so that the generation of noise called chatter noise is suppressed. .

  In the heat exchange ventilator 1A, an OA duct joint 74OA is attached to the outside air inlet 70OA, and an EA duct joint 74EA (see FIGS. 11 and 12) is attached to an exhaust outlet (not shown). Further, in the heat exchange type ventilation apparatus 1A, a plurality of SA duct joints 74SA are attached to the air supply outlet 70SA. These duct joints are attached to the cabinet 7 by attachment brackets 75 or the like. In addition, you may provide the sub suction port which exhausts without letting the heat exchange element 5 pass. Moreover, it is good also as a structure which connects the branch chamber provided with several SA duct joint to the air supply outlet 70SA.

  The heat exchange ventilator 1A includes an OA filter 8 that cleans the outside air OA sucked by the supply fan 4SA, and an RA filter 9 that cleans the return air RA sucked by the exhaust fan 4EA. The OA filter 8 is an example of a first filter, and includes a frame portion 80 and a filter member 81 attached to the frame portion 80.

  1 A of heat exchange type | mold ventilation apparatuses equip the main-body part 2 with the OA filter attachment part 46 to which the OA filter 8 is attached so that attachment or detachment is possible. The OA filter attachment portion 46 is an example of a first filter attachment portion, and is configured by forming a groove for guiding the movement of the OA filter 8 in the vertical direction in the wall portion of the supply air passage formation space 44SA.

  The OA filter 8 is inserted into the OA filter attachment portion 46 so as to be vertically attached to the supply air passage formation space 44SA of the main body portion 2, and is attached to and detached from the main body portion 2 by moving in the vertical direction.

  The front panel 3 includes an attachment / detachment port cover 30 on one end side in the longitudinal direction. The front panel 3 is formed with an attachment / detachment port 31 that is opened to a size that allows the OA filter 8 attached to the OA filter attachment portion 46 to be taken in and out. The attaching / detaching port cover 30 is supported by the front panel 3 so that the shaft portion 30a can rotate, and opens / closes the attaching / detaching port 31 by a rotating operation with the shaft portion 30a as a fulcrum. The shaft portion 30a is disposed outside the attachment / detachment port cover 30, and the attachment / detachment port cover 30 is opened toward the outside.

  In the heat exchange ventilator 1 </ b> A, when the attachment / detachment opening cover 30 is opened, the OA filter 8 is exposed at the attachment / detachment opening 31 of the front panel 3. The heat exchange ventilator 1 </ b> A allows the OA filter 8 to be inserted into and removed from the OA filter mounting portion 46 by moving the OA filter 8 up and down in the vertical direction. Thereby, in the heat exchange type ventilation apparatus 1A, the OA filter 8 is attached and detached without opening and removing the front panel 3 by opening the attachment / detachment port cover 30.

  The front panel 3 includes a suction port cover 32 on the other end side in the longitudinal direction. The suction port cover 32 is formed with a suction grill 33 connected to the return air suction port 70RA of the main body 2.

  An opening 34 is formed in the front panel 3 at a position facing the return air suction port 70RA. The suction port cover 32 has a shaft portion 32a that is rotatably supported by the front panel 3, and opens and closes the opening 34 by a turning operation with the shaft portion 32a as a fulcrum. The axial part 32a is arrange | positioned on the outer side of the suction inlet cover 32, and the suction inlet cover 32 is opened toward the outer side. Thereby, the attachment / detachment port cover 30 and the suction port cover 32 are in the form of a so-called double door.

<Configuration example of RA filter of this embodiment>
FIG. 4 is a perspective view showing an example of the RA filter of the present embodiment. The RA filter 9 is an example of a second filter, and includes a frame portion 90, a filter member 91, a handle portion 92, and a suction prevention protrusion 93. The handle portion 92 is an example of an operation guiding member, and is configured by providing, for example, an arrow-shaped convex portion so as to guide an operation when the RA filter 9 is attached or detached.

<Example of RA filter attachment / detachment configuration according to this embodiment>
FIG. 5 is a perspective view showing an example of the suction port cover of the present embodiment, and shows a state where the RA filter is removed. FIG. 6 is a perspective view showing an example of the suction port cover of the present embodiment, and shows a state where the RA filter is attached. The suction port cover 32 includes an RA filter attachment portion 35 to which the RA filter 9 is attached inside the suction grill 33. The RA filter mounting portion 35 is an example of a second filter mounting portion, and includes a pair of lateral guide portions 35a, an upper guide portion 35b, and a lower guide portion 35c arranged in a pair with the upper guide portion 35b.

  The lateral guide portion 35 a is formed by providing protrusions that guide the left and right sides of the frame portion 90 of the RA filter 9 on the back surface of the suction port cover 32. The upper guide part 35 b and the lower guide part 35 c are formed by providing a hook-like protrusion on which the frame part 90 of the RA filter 9 is locked on the back surface of the suction port cover 32. The interval between the lateral guide portions 35 a is configured to be slightly larger than the longitudinal width of the RA filter 9. The gap between the upper guide part 35b and the lower guide part 35c is provided with a predetermined attachment / detachment gap so that the RA filter 9 can be attached / detached by moving the RA filter 9 between the guides.

  FIG. 7 is an operation explanatory view showing the attaching / detaching operation of the RA filter of the present embodiment. In a state where the RA filter 9 is attached to the suction port cover 32, as shown in FIG. 7A, both the upper end and the lower end of the RA filter 9 are locked to the upper guide portion 35b and the lower guide portion 35c. ing. Thereby, even if the inlet cover 32 is opened and closed, the RA filter 9 is not inadvertently detached and is held at a predetermined position. In the state of FIG. 7A, a predetermined attachment / detachment gap H is formed between the upper end of the RA filter 9 and the upper guide portion 35b.

  When replacing the RA filter 9, the suction port cover 32 is opened, and the RA filter 9 is lifted in the direction of the arrow U as shown in FIG. Here, as shown in FIG. 4 and the like, the RA filter 9 is provided with an arrow-shaped handle portion 92. The user can know the moving direction when attaching / detaching the RA filter 9 by looking at the handle portion 92.

  When the RA filter 9 is lifted in the direction of the arrow U and moved by the attachment / detachment gap H, the attachment / detachment gap H is formed between the lower end of the RA filter 9 and the lower guide portion 35c, and the lower end of the RA filter 9 is the lower guide portion 35c. Deviate from.

  Accordingly, as shown in FIG. 7C, the RA filter 9 is rotated in the direction of arrow J with the upper end side of the RA filter 9 as a fulcrum, as shown in FIG. Can be removed from. In addition, what is necessary is just to perform the operation | movement mentioned above reversely, when attaching RA filter 9 to the suction inlet cover 32. FIG.

  In the heat exchange type ventilation apparatus 1A, the RA filter 9 is attached and detached without opening and removing the front panel 3 by opening the suction port cover 32. The heat exchange type ventilator 1A is attached to the ceiling panel 101 of the building, and the attachment / detachment work of the RA filter 9 is performed in a posture facing upward. For this reason, workability is poor in the configuration in which the RA filter is fixed by screwing or the like.

  In contrast, in the heat exchange type ventilator 1A of the present embodiment, the attachment and detachment can be performed with one hand because the RA filter 9 can be slid by moving the RA filter 9 with the suction port cover 32 opened. , Workability is improved. Further, by clearly indicating the operation direction with the handle portion 92 as an arrow shape, the user can clearly understand the operation method without looking at the manual.

  FIG. 8 is a cross-sectional view showing an example of a locking tool of the present embodiment. The suction port cover 32 has a locking projection 36 formed on the back surface. Further, the front panel 3 includes a locking tool 37 on which the locking projection 36 of the suction port cover 32 is detachably locked.

  The locking device 37 is called a push latch, and when the suction port cover 32 is further pushed in from a closed state, the locking projection 36 is unlocked and the suction port cover 32 can be opened. Further, when the suction port cover 32 in the opened state is closed and pushed once, the locking projection 36 is locked by the locking tool 37, and the suction port cover 32 is held in the closed state.

  Here, the displaceable amount of the locking tool 37 is increased so that a stroke amount necessary for locking and releasing the locking projection 36 can be secured, so that locking and releasing can be performed reliably. . In addition, although the locking structure of the suction inlet cover 32 was demonstrated in FIG. 8, the attachment / detachment opening cover 30 is also equipped with the same locking structure, and the attachment / detachment opening cover 30 can be opened and closed by the same operation as the suction opening cover 32. It has become.

  FIG. 9 is a cross-sectional view showing the suction prevention structure of the RA filter according to the present embodiment. The front panel 3 includes a pressing portion 38 into which a suction prevention protrusion 93 that is an example of a suction prevention means provided in the RA filter 9 is fitted. When the suction port cover 32 to which the RA filter 9 is attached is closed, the holding portion 38 is formed with an opening into which the suction prevention protrusion 93 of the RA filter 9 is inserted, and the return air RA sucked from the return air suction port 70RA. This prevents the RA filter 9 from being sucked.

<Attachment / detachment configuration example of the OA filter of the present embodiment>
FIG. 10 is an enlarged view of a main part showing an example of a fixed configuration of the OA filter of the present embodiment, and FIGS. 11 and 12 are operation explanatory views showing an example of fixing operation of the OA filter of the present embodiment.

  The heat exchange type ventilator 1 </ b> A includes a stopper 86 in the main body 2 and a pressing member 87 in the OA filter 8. The stopper 86 is attached to the lower surface of the presser metal plate 73 so as to be rotatable about the shaft portion 86a. The stopper 86 is formed with a wide portion 86b whose width increases from the shaft portion 86a side toward the tip in accordance with the trajectory of the rotation operation with the shaft portion 86a as a fulcrum.

  The holding member 87 is formed to protrude from the lower surface of the frame portion 80 of the OA filter 8. The pressing member 87 has an arc shape along the locus of the stopper 86 with the shaft portion 86a as a fulcrum, and from the tip end side of the arc, the inclined portion 87a, the pressing portion 87b, the retracting portion 87c, and the rotation restriction. A portion 87d is formed.

  As shown in FIG. 10, the inclined portion 87 a of the pressing member 87 is formed as an inclined surface that rises at a gentle angle from the lower surface of the OA filter 8. The pressing portion 87b of the pressing member 87 has a predetermined height from the lower surface of the OA filter 8, and is formed by a horizontal surface connected to the inclined portion 87a. The retracting portion 87c of the pressing member 87 has a height lower than that of the pressing portion 87b. The rotation restricting portion 87d of the pressing member 87 has a height higher than that of the pressing portion 87b. The pressing member 87 is formed at a position where the pressing portion 87 b is close to the center of the OA filter 8 in the width direction.

  In the heat exchange type ventilator 1 </ b> A, when the attachment / detachment opening cover 30 is opened as shown in FIG. 1, the OA filter 8 is exposed to the attachment / detachment opening 31 of the front panel 3. Then, when the stopper 86 is pivoted about the shaft 86a and retracted from the OA filter 8 as shown in FIG. 12, the OA filter 8 can be attached to and detached from the main body 2.

  In order to fix the OA filter 8, from the state shown in FIG. 12, the stopper 86 is rotated in the direction of arrow D with the shaft portion 86a as a fulcrum. When the stopper 86 is rotated in the direction of arrow D with the shaft portion 86a as a fulcrum, the stopper 86 is guided by the inclined portion 87a of the pressing member 87, the wide portion 86b rides on the pressing portion 87b, and pushes up the OA filter 8. . When the stopper 86 is further rotated, a part of the wide portion 86b is not in contact with the pressing member 87 at the position of the retracting portion 87c of the pressing member 87. Then, when the stopper 86 is abutted against the rotation restricting portion 87 d of the pressing member 87, the rotation of the stopper 86 is restricted.

  When the stopper 86 is rotated to a position where the stopper 86 is abutted against the rotation restricting portion 87d of the pressing member 87, the wide portion 86b of the stopper 86 is in contact with the pressing member 87 at the pressing portion 87b. A part of is not in contact with the pressing member 87 at the position of the retracting portion 87c.

  Thereby, as shown in FIG. 2, the OA filter 8 inserted into the filter mounting portion 46 is pushed up by a part of the wide portion 86b of the stopper 86 coming into contact with the pressing member 87 at the pressing portion 87b. Therefore, air leakage at the position where the OA filter 8 is attached can be prevented.

  The heat exchange type ventilation device 1A is attached to the ceiling panel 101 of the building, and the OA filter 8 is attached and detached in a posture facing upward. For this reason, workability is poor in the configuration in which the OA filter is fixed by screwing. On the other hand, in the heat exchange type ventilation apparatus 1A of the present embodiment, the OA filter 8 can be fixed and released by rotating the single stopper 86, and workability is improved. Moreover, since the stopper 86 is a structure which does not remove | deviate from the main-body part 2, it can prevent loss of components. Furthermore, the shape of the pressing member 87 provided in the OA filter 8 allows the OA filter 8 to be pressed against the main body 2 side by the rotation of the stopper 86, and a sealing property can be secured by a simple operation. it can.

  The attachment / detachment port cover 30 and the suction port cover 32 open toward each other. Thereby, if the user works near the center of the front panel 3, both the OA filter 8 and the RA filter 9 can be easily attached and detached. Further, in the configuration in which the RA filter is slid and moved with respect to the front panel, there is a possibility that the RA filter cannot be attached or detached if the heat exchange type ventilator is installed near the wall. On the other hand, in this Embodiment, the RA filter 9 can be attached or detached irrespective of the installation place of 1 A of heat exchange type | mold ventilation apparatuses.

  The detachable port cover 30 does not require a grill portion for sucking air, but can be shared with the suction port grill 32 by including a member that closes the opening of the grill portion.

<Operation example of the heat exchange type ventilator of the present embodiment>
The heat exchange type ventilator 1A constitutes a first type ventilation system in which supply and exhaust are performed by mechanical ventilation, and is continuously operated for 24 hours (always) with a ventilation air volume in which building air is replaced in a predetermined time. That is, in the heat exchange type ventilator 1A, the supply fan 4SA and the exhaust fan 4EA are driven at a rotational speed at which a predetermined ventilation air volume is obtained.

  When the air supply fan 4SA is driven by the fan motor 41M, the heat exchange type ventilator 1A sucks air from the fan suction port 42SA in the supply air passage 20SA, and the air sucked from the fan suction port 42SA Blows out from 43SA.

  Further, in the heat exchanging ventilator 1A, when the exhaust fan 4EA is driven by the fan motor 41M, air is sucked from the fan suction port 42EA in the exhaust air passage 20EA, and the air sucked from the fan suction port 42EA is not shown. It blows out from the fan outlet.

  As a result, in the heat exchange type ventilator 1A, outside air OA is sucked into the supply air passage 20SA from the outdoor grill on the outer wall of the building (not shown) through the suction duct. The outside air OA sucked into the supply air passage 20SA is cleaned by removing foreign matters such as dust and insects by passing through the OA filter 8, and the purified air (outside air OA) is supplied through the heat exchange element 5. Qi SA is blown out.

  Further, the return air RA from the room is sucked into the exhaust air passage 20EA from the suction grill 33 of the front panel 3. The return air RA sucked into the exhaust air passage 20EA passes through the RA filter 9 to remove foreign matters such as dust in the room and is purified, and the purified air (return air RA) passes through the heat exchange element 5. The exhaust EA that has passed through the heat exchange element 5 passes through an exhaust duct (not shown) and is discharged to the outside from the outdoor grill on the outer wall of the building.

  The outside air OA passing through the supply air passage 20SA and the return air RA passing through the exhaust air passage 20EA are heat-exchanged by passing through the heat exchange element 5, and the supply air SA brought close to room temperature is blown into the room. The fresh air (outside air) whose temperature is adjusted is supplied to the room. In addition, dirty air in the room is exhausted outdoors.

  The present invention is applied to an air conditioner that is installed in a general house and has a 24-hour ventilation function.

  DESCRIPTION OF SYMBOLS 1A ... Heat exchange type ventilator, 2 ... Main part, 20SA ... Supply air path, 20EA ... Exhaust air path, 3 ... Front panel, 30 ... Removable cover, 30a .... Shaft part, 32 ... Suction port cover, 32a ... Shaft part, 33 ... Suction grill, 35 ... RA filter mounting part, 36 ... Locking projection, 37 ... Locking 4SA ... Air supply fan, 4EA ... Exhaust fan, 5 ... Heat exchange element, 6 ... Air path forming member, 7 ... Cabinet, 8 ... OA filter, 9 ... RA filter, 90 ... frame part, 91 ... filter member, 92 ... handle part, 93 ... suction prevention protrusion

Claims (6)

A main body and a front panel attached to the lower side of the main body;
The main body is
An outside air inlet through which the outside air is sucked in by an air supply fan;
A first filter attaching portion to which a first filter that allows the outside air sucked from the outside air suction port to pass is detachably attached;
With a return air inlet through which the indoor air is sucked in by an exhaust fan,
The front panel is
An attachment / detachment port cover capable of opening and closing an attachment / detachment port through which the first filter attached to the main body part is put in and out;
A suction grill connected to the return air suction port is formed, and a suction port cover that can be opened and closed,
A second filter mounting portion provided on the suction port cover and detachably mounted with a second filter that allows passage of indoor air sucked into the return air suction port from the suction grille. Ventilation equipment to do. The detachable port cover opens and closes with respect to the front panel by a pivoting operation with a shaft portion as a fulcrum, and the suction port cover opens and closes with respect to the front panel by a pivoting operation with the shaft portion as a fulcrum. The ventilator according to claim 1, wherein the shaft portion is disposed outside the attachment / detachment port cover, and the shaft portion is disposed outside the suction port cover. The said 2nd filter attachment part made the said 2nd filter detachable with respect to the said suction inlet cover by slidingly moving the said 2nd filter. The Claim 1 or 2 characterized by the above-mentioned. Ventilation device. The ventilation device according to claim 3, wherein the second filter includes an operation guide member on which a notation for guiding the attachment / detachment operation of the second filter is performed. The ventilator according to claim 1, 2, 3, or 4, wherein the main body portion includes a stopper for fixing and releasing the fixing of the first filter by a rotating operation. The said 2nd filter was equipped with the suction prevention means which prevents that the said exhaust filter is attracted | sucked with the air suck | inhaled from the said return air suction inlet. The any one of Claims 1-5 characterized by the above-mentioned. Ventilation equipment.

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