JP4720263B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a housing ventilator that introduces air outside a house into a building and ventilates the house while discharging air inside the house to the outside of the house.

  Conventionally, this type of ventilator has an air supply path for introducing outside air into the house and an exhaust path for discharging the air in the house inside the ventilator body, and these devices include exhaust air. There is known a ventilator provided with a heat exchanging part for reducing the amount of heat generated and an introduction outside air cleaning part for removing pollen and dust contained in the outside air to be introduced by a filter or the like (for example, Patent Document 1).

  These ventilators propose that they can be easily and easily installed in the ceiling space of ordinary houses, etc. The dimensions of the ventilator must be as thin and small as possible, and the overall shape is also generally rectangular or It has a substantially square configuration, and it is required to functionally arrange an introduction outside air cleaning part, a heat exchange part, and the like while providing an air supply path part and an exhaust path part inside such a ventilator.

According to Patent Document 1 shown here, in order to improve the function without increasing the arrangement size of the introduction outside air cleaning part as much as possible, the outside air intended to introduce the introduction outside air more effectively into the outside air cleaning part. An air guide is provided.
JP 2004-69125 A

  However, in the above conventional ventilator shown in FIG. 16, in the arrangement inside the ventilator main body, the air conveying part 60 composed of the air supply path part and the exhaust path part occupies most of the inside of the main body by the substantially square part, and the outside air The introduction unit 61, the heat exchange unit 62, the outside air cleaning unit 63, and the outside air guide unit 64 for improving their functions require additional arrangement space before and after the air transfer unit, and inevitably There was a problem that the dimensions had to be approximately rectangular. In order to further reduce the dimensions of the main body, it is necessary to reduce the size of the air transfer section and the outside air cleaning section, and there is a problem that the air cleaning capacity and the air transfer capacity that are originally required are reduced.

  The present invention solves such a conventional problem, and functionally arranges the outside air cleaning unit without sacrificing the arrangement space of the air conveying unit composed of the air supply path unit and the exhaust path unit. Furthermore, it aims at providing the ventilator which can reduce the dimension of a ventilator main body.

  In the ventilation device of the present invention, a substantially circular barrier portion smaller than the inner diameter of the substantially cylindrical filter is provided below the air supply path portion below the suction portion of the air supply casing.

  In the ventilator of the present invention, a space portion is provided between the barrier portion and the closed portion, and a convex wall portion is provided on the outer peripheral portion of the closed portion toward the barrier portion so as to contact the substantially outer periphery of the barrier portion. It is a contact.

  Further, in the ventilator of the present invention, the fastening part that fastens the closing part and the lower surface of the main body includes a claw part for fixing and holding and a receiving part that engages with the claw part, and the claw part and the receiving part Are arranged in a plurality of concentric circles, and the claw portion and the receiving portion are brought into contact and fitted by rotation of the closing portion.

  In the ventilator of the present invention, in the fastening part, the receiving part is formed by a hole part into which the claw part is inserted and a support part that supports the claw part, and the claw part includes the hole part. An inclined portion is formed at the contact portion with the contact portion, and the claw portion and the support portion are fitted by rotational displacement generated while the inclined portion and the end portion of the hole portion are in contact with each other.

  Moreover, the ventilation apparatus of this invention provides the convex part in the side which the said nail | claw part front-end | tip part and the said receiving part front-end | tip contact | abut mutually.

  Moreover, the ventilation apparatus of this invention has the holding | maintenance part of the said filter in the said closing part.

  In the ventilator of the present invention, the closing portion is formed in a substantially circular shape.

  Moreover, the ventilation apparatus of this invention forms the holding | maintenance part of the said filter in the recessed part shape which can insert the said filter edge part.

  Moreover, the ventilator of this invention is formed by the substantially square main body shape.

  According to the present invention, the ventilation that can functionally arrange the outside air purification unit and further reduce the size of the ventilator main body without sacrificing the arrangement space of the air conveyance unit composed of the air supply path unit and the exhaust path unit. An apparatus can be provided.

Ventilation device according to claim 1 or 2 of the present invention, the air supply path portion below the suction portion below the front Symbol air supply casing, provided with a substantially circular barrier portion smaller becomes than the inner diameter of the substantially cylindrical filter The barrier portion may cause the user to inadvertently touch the intake port or the supply fan portion of the supply casing that is exposed when the closure portion is opened during filter cleaning or replacement. The effect which prevents can be exhibited. Moreover, since the said barrier part is arrange | positioned in the position close | similar to the said closing part below an air supply casing suction inlet, the required area as a barrier can be ensured to the maximum, without blocking the ventilation path of the said filter.

The ventilator according to claim 3 is the ventilator according to claim 1 or 2 , wherein a space portion is provided between the barrier portion and the closing portion, and the barrier portion is provided on an outer peripheral portion of the closing portion. A convex wall portion is provided on the side and is brought into contact with the substantially outer periphery of the barrier portion, and the closing portion functions as a partition between the air supply path and the indoor space on the lower surface of the main body. Therefore, the occurrence of dew condensation is easily considered depending on the air supply path and the air environment of the indoor space. The space portion is disposed for the purpose of preventing condensation on the surface of the shielding portion, and an air layer for heat insulation is formed by the shielding portion adjacent to the closing portion, and this air layer is an outer periphery of the closing portion. This is realized by bringing the protruding wall and the outer periphery of the barrier portion into contact with each other to form a sealed space.

The ventilator according to claim 4 is the ventilator according to any one of claims 1 to 3 , wherein the fastening part that fastens the closing part and the lower surface of the main body includes a claw part for fixing and holding. The claw portion includes a receiving portion to which the claw portion is fitted, and the claw portion and the receiving portion are arranged in a plurality of concentric circles, and the claw portion and the receiving portion are brought into contact with and fitted by rotation of the closing portion. When closing or opening the closing part, the user can easily complete the attaching / detaching action by simply rotating the closing part, and a separate part as a fastening part becomes unnecessary. The reduction effect can be demonstrated. In addition, by providing a plurality of fastening portions, the closing portion can be uniformly closed, and a structure that can reliably prevent air leakage and condensation.

The ventilator according to claim 5 is the ventilator according to claim 4 , wherein, in the fastening part, the receiving part is a hole part into which the claw part is inserted and a support part that supports the claw part. The claw portion is formed with an inclined portion at a contact portion with the hole portion, and the claw portion and the support portion are caused by rotational displacement generated while the inclined portion and the end portion of the hole portion are in contact with each other. When the claw portion is inserted into the hole portion, the closure portion may not be fastened and may fall if the claw portion is not rotated. Thus, when the claw portion is inserted into the hole portion, the inclined portion and the end surface of the hole portion are inserted while being in contact with each other, so that rotational displacement in the fitting direction between the claw portion and the support portion inevitably occurs. The fall of the closed part can be prevented. When the opening and closing of the closing part is performed during operation of the device, the closing part for closing the air supply path part is closed in a state where the claw part is inserted into the hole part by the suction force of the air supply fan. When the device is stopped in a state, the closing part may fall unexpectedly. However, according to the claw part provided with the inclined part, the claw part once inserted into the hole part by the suction force of the air supply fan. Since the device is fitted to the support portion by the rotational displacement developed by the insertion, even if the device stops and loses the suction force, the closing portion can be prevented from unexpectedly dropping on the user's head or the like.

The ventilator according to claim 6 is characterized in that, in the ventilator according to claim 4 or 5 , a convex part is provided on the side of the claw part tip part and the receiving part tip part that contact each other. Therefore, it is possible to develop a sense of resistance that allows the user to confirm that the fitting between the claw portion and the support portion has been reliably performed. In addition, it is possible to prevent unexpected opening and closing of the claw portion and the support portion due to device vibration during use.

The ventilator according to claim 7 is the ventilator according to any one of claims 1 to 6 , characterized in that the closing part has a holding part for the filter. By holding the filter on the filter, it is possible to simultaneously attach and detach the closing portion to be removed at the time of filter maintenance and the filter at the same time, thereby providing easy maintenance for the user. Further, it is possible to reduce the mechanical parts generated when the filter is separately mounted inside the main body.

The ventilator according to claim 8 is the ventilator according to any one of claims 1 to 7 , wherein the closing part is formed in a substantially circular shape, Since the opening area of the air supply path portion on the lower surface of the main body to be opened can be reduced and the substantially cylindrical filter can be formed with a minimum opening portion, maintenance by the user is facilitated.

The ventilator according to claim 9 is characterized in that, in the ventilator according to claim 7 or 8 , the holding part of the filter is formed in a concave shape into which the end of the filter can be inserted. By inserting the substantially cylindrical filter end portion into the recess, the filter can be easily attached to the closing portion, and the filter can be attached to prevent air leakage at the filter end portion.

The ventilator according to claim 10 is the ventilator according to any one of claims 1 to 9 , wherein the ventilator is formed by a substantially square body shape, Without reducing the space required for the air supply path and exhaust path that are originally required, it is possible to provide an outside air cleaning section such as a filter, and the main body size is approximately square with the fan motor section disposed substantially in the center. It becomes possible to configure, and space-saving and simple construction performance can be provided when installing the main body.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

(Embodiment 1)
As Embodiment 1 of the ventilating apparatus of the present invention, a ventilation for a house that introduces air outside the house into the building using a duct and ventilates the house while discharging the air inside the house to the outside of the house. The apparatus will be described.

  As shown in FIGS. 1 to 3, the main body 1 of the ventilation device includes a frame 2, an air supply fan unit 3 and an exhaust fan unit 4 built in the frame 2, and external air is introduced into the first side surface 5 of the main body. An outdoor air inlet 7 having a duct connecting portion 6 and an outdoor exhaust port 9 having an outdoor exhaust duct connecting portion 8 are provided side by side, and the second side surface 10 facing the first side surface 5 has an indoor air supply. An indoor air inlet 12 having a duct connecting portion 11 is provided.

  The outside air 13 is taken in from the outside air introduction port 7 through the outside air introduction port 7 into the supply fan unit 3 including the supply fan 14 and the supply casing 15, and from the indoor supply port 12 through the indoor supply duct. It is supplied to the desired part of the house. On the other hand, the indoor air 16 is taken into the exhaust fan unit 4 including the exhaust fan 18 and the exhaust casing 19 from the indoor air suction port 17 located on the lower surface of the main body, and is taken out of the house from the outdoor exhaust port 9 through the outdoor exhaust duct. Exhausted.

  Inside the main body, the air supply fan unit 3 and the exhaust fan unit 4 are partitioned into a vertical space by a partition plate 20, the exhaust fan unit 4 is formed in the upper part of the partition plate 20, and the lower part of the partition plate 20 is formed. An air supply fan unit 3 is formed. A motor 21 is disposed on the partition plate 20, and the air supply fan 14 and the exhaust fan 18 are driven together by the same motor.

  The indoor air suction port 17 on the lower surface of the main body and the exhaust fan portion 4 are communicated with each other by an exhaust passage portion 22 provided outside the air supply fan portion 3, and the air supply passage portion 23 below the air supply casing 15 and the indoor space below the main body. 24 is isolated by a main body lower surface panel 25, and a partition wall portion between the air supply path portion 23 and the exhaust path portion 22 is constituted by a heat insulating material 26.

  The filter 27 that removes dust and the like contained in the outside air 13 is disposed below the air supply casing suction port 28 so as to surround the air supply casing suction port 28. And an air supply passage portion 29 for introducing outside air to the air supply casing suction portion 28 through the filter 27. Further, the filter 27 is formed in a substantially cylindrical shape shown in FIG. 4 and is disposed in a portion where the air supply casing suction port 28 is located inside the substantially cylindrical shape, and the filter end 30 is brought into contact with the air supply casing 15. The other filter end 30 is brought into contact with the bottom panel 25 of the main body and closes the gap on the outer periphery of the filter.

  The outside air 13 passes through the filter from all directions of the filter outer periphery through an air supply path portion 29 developed on the filter outer periphery, and the clean outside air from which dust has been removed is conveyed to the air supply casing suction port 28 inside the filter.

  By disposing the filter 27 at the above position, there is no need to expand the main body size by mounting the filter, the main body size can be made compact, and there is an effect that the construction space can be reduced. In addition, since the filter is arranged on the outer periphery of the intake casing suction port, it is possible to increase the filter area as compared with a planar filter, and the supply passage section that extends around the entire periphery of the filter The outside air can be uniformly passed through the filter, which has the effect of improving the efficiency of the filter and improving the service life.

  In addition, as shown in FIG. 4, by forming the filter 27 in a substantially cylindrical shape, the distance between the air supply casing suction port 28 and the filter 27 can be arranged constant, so that the effect of allowing the outside air to uniformly pass through the filter This further improves the effect of making the dust collection point of the filter uniform and minimizing the area of the opening for attaching and detaching the filter.

  Further, as shown in FIG. 5, an opening 31 is provided at a position corresponding to the lower part of the filter on the bottom panel 25 of the main body, and when performing maintenance such as cleaning and replacement of the filter 27, the filter 27 is attached and detached from the opening 31. I do. The opening 31 is provided with a closing portion 32, and the opening 31 is closed and sealed during normal operation of the device.

  As shown in FIGS. 1 and 2, the closing portion 32 is fastened by the main body lower surface panel 25 and the fastening portion 33, and the closing portion 32 can be easily attached and detached by opening and fastening operations of the fastening portion 33.

  As shown in FIG. 5, a substantially planar barrier portion 34 is provided at a substantially central portion of the opening portion 31 so as to face and close to the closing portion 32, and the filter 27 is attached and detached from the filter insertion portion 35 on the outer periphery of the barrier portion. A configuration that can be used.

  This barrier portion can prevent the user's hand from touching the air supply fan exposed from the air supply casing suction port during filter maintenance.

  In addition, as shown in FIG. 7, the closed portion 32 and the barrier portion 34 are provided with a space portion 36 separated by about 10 mm, and a convex wall 37 is provided on the outer periphery of the barrier portion toward the closed portion. It is sealed against the outer periphery. Since the space portion 36 functions as a heat insulating layer, condensation on the surface of the closed portion can be prevented. Since the convex wall 37 provided in the barrier part 34 is for the purpose of maintaining the airtightness of the space part, a sealing material such as packing can be used instead.

  Also, as shown in FIGS. 8 to 9, a claw portion 38 is provided on the outer edge of the closing portion 32, and the claw portion 38 is inserted into and fitted to the bottom surface panel 25 at a position corresponding to the claw portion 38 of the closing portion 32. A receiving portion 39 is provided.

  As shown in FIG. 10, the receiving portion 39 is formed by a hole portion 40 into which the claw portion 38 is inserted and a support portion 41 that supports the claw portion 38.

  Further, as shown in FIGS. 8 to 10, a plurality of claw portions 38 and receiving portions 39 are arranged concentrically, and the claw portions 38 and the receiving portions 39 are brought into contact with and fitted by the rotation of the closing portion 32, so that the closing portion Reference numeral 32 denotes a main body lower panel 25. When removing the closing portion 32, the closing portion 32 is rotated in the opposite direction to that at the time of attachment, and the fitting between the claw portion 38 and the receiving portion is released to remove the closing portion 32.

  Thus, since the fastening structure is added to both the closing portion and the main body lower surface panel, a separate fastening component for fastening the closing portion and the main body lower surface panel becomes unnecessary. Moreover, since the nail | claw part and the receiving part are arrange | positioned concentrically, it can be fastened by rotation of a closing part and it becomes easy to attach or detach at the time of a maintenance.

  Further, as shown in FIGS. 11 to 12, the claw portion 38 is formed with an inclined portion 42 at the contact portion with the hole portion 40, and due to the rotational displacement 43 generated while the inclined portion 42 and the hole end portion are in contact with each other. The claw part 38 and the support part 41 are fitted. Since the inside of the closing portion 32 is the air supply casing suction port 28, a negative pressure is generated during operation of the device, and the closing portion 32 is attached to the main body lower panel 25 while closing the opening portion 31 by a suction force generated by the negative pressure. In the case of stopping, if the claw portion and the receiving portion are not fitted, the suction force is lost, and there is a risk of unexpected dropping to the user side. The inclined portion 42 provided in the claw portion avoids such a danger. At the same time as the closing portion 32 is attached to the main body lower surface panel 25 by the suction force of the air supply casing portion, the inclined portion 42 and the end of the hole portion are provided. Since the closing portion is rotated by the rotational displacement 43 generated in the closing portion 32 while the portion is in contact, and the claw portion and the support portion are fitted, the closing portion 32 can be prevented from dropping unexpectedly even when the device is stopped.

  13-14, the convex part 44 is provided in the side which the nail | claw part front-end | tip part and a support part front-end | tip part contact | abut mutually. By this convex portion, it is possible to prevent the fitting portion of the closing portion from being opened due to vibration during operation of the device.

  In addition, when the fitting is incomplete only with the claw part inserted into the hole due to the suction force of the air supply path part, the closed part will fall due to the reduction of the suction force due to the equipment being stopped. It can be surely prevented by engaging with the convex part.

  Further, as shown in FIG. 15, the closing portion 32 is provided with a holding portion 45 of the filter 27 so that the filter can be attached to and detached from the closing portion. Thus, when the filter maintenance is performed, if the closing portion is opened, the filter is attached to the inside thereof, so that the filter can be attached / detached at hand, and the maintenance is easy.

  Further, the holding portion 45 of the filter 27 is provided with a plurality of ribs 46 formed in a concave shape for inserting the filter end portion 30, and the filter end portion 30 is inserted and held in the concave portion formed by the rib 46. is doing. The substantially cylindrical filter end portion 30 is substantially circular, and when the filter 27 is inserted into the closing portion 32, it can be inserted in accordance with the circular shape of the filter end portion, so that it can be arbitrarily inserted in the circumferential direction. It is easy to insert a filter. Further, since the entire circumference is formed by the concave ribs, air leakage at the filter end can be reliably prevented.

  Moreover, the closed portion 32 is configured in a substantially circular shape, so that the area of the opening portion 31 for attaching and detaching the filter can be minimized, and a large space for the fastening portion and a space for the indoor air intake port can be secured.

  Further, since the closing portion is fitted to the main body lower surface panel by rotation, there is an effect that the appeal of the operation by rotation becomes clear by making the closing portion substantially circular.

  Moreover, since this ventilation apparatus is comprised by the substantially square main body shape, the ceiling space at the time of construction can be made small, there is no restriction | limiting by directionality with respect to a substantially rectangular shape, and the freedom degree of apparatus installation space can be expanded.

  The ventilator according to the present invention is useful for a house ventilator for ventilating a house while introducing air outside the house into the building using a duct and discharging the air inside the house to the outside of the house.

Sectional drawing which shows the ventilation apparatus in Embodiment 1 of this invention Top view of the ventilation device Sectional view corresponding to Fig. 2 of the ventilation device Perspective view showing the filter of the ventilation device Sectional drawing which shows the opening part opening state of the ventilation apparatus Plan view corresponding to Fig. 5 of the ventilation device Sectional drawing which shows the space part of the ventilation apparatus Sectional drawing which shows the nail | claw part of the ventilation apparatus Plan view corresponding to Fig. 8 of the ventilation device Sectional drawing which shows the fastening part of the ventilation apparatus Sectional drawing which shows the inclination part provided in the nail | claw part of the ventilation apparatus Sectional drawing which shows the rotational displacement produced by the inclination part of the ventilation apparatus Sectional drawing which shows the convex part provided in the nail | claw part and instruction | indication part of the ventilation apparatus Sectional drawing which shows the fitting state by the convex part of the ventilation apparatus The perspective view which shows the filter instruction | indication part of the ventilation apparatus Schematic diagram showing the internal structure of a conventional ventilator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 5 1st side surface 6 Duct connection part for external air introduction 7 Outside air introduction port 8 Duct connection part for outdoor exhaust 9 Outdoor exhaust port 10 2nd side surface 11 Duct connection part for indoor air supply 12 Indoor air supply port 14 Air supply Fan 15 Air supply casing 17 Indoor air inlet 18 Exhaust fan 19 Exhaust casing 21 Motor 22 Exhaust path part 23 Air supply path part 27 Filter 30 Filter end part 31 Opening part 32 Closure part 33 Fastening part 34 Barrier part 36 Space part 37 Convex Wall 38 Claw portion 39 Receiving portion 40 Hole portion 41 Support portion 42 Inclined portion 43 Rotational displacement 44 Convex portion 45 Holding portion

Claims (10)

The outdoor air introduction port having the outdoor air introduction duct connection portion and the indoor air supply port having the indoor air supply duct connection portion are communicated with each other by an air supply path including an air supply fan and an air supply casing. The outdoor air outlet and the indoor air inlet are communicated by an exhaust path including an exhaust fan and an exhaust casing, the outdoor air inlet and the outdoor air outlet are provided on a first side surface of the main body, and the indoor air inlet On the second side opposite to the first side of the main body, the indoor air intake port on the lower surface of the main body, the air supply fan provided at the lower part of the motor inside the main body, and the exhaust fan Is provided in the upper part of the motor, and the air supply fan and the exhaust fan driven together by the motor are arranged inside a substantially rectangular parallelepiped ventilation device main body, and the dust of the outside air is disposed upstream of the air supply casing. The filter is disposed so as to surround a suction portion at a lower portion of the air supply casing, and the outside air passes through the filter from an outer periphery of the filter and is a suction portion at the lower portion of the air supply casing. An air supply passage for introducing into the air casing suction portion, an opening for attaching and detaching the filter is provided on the lower surface of the main body, a closing portion for closing the opening is provided, and the closing portion has the opening. A substantially circular barrier portion smaller than the inner diameter of the substantially cylindrical filter is provided below the intake passage portion below the suction portion of the supply casing. the same hourly wage exhaust ventilation equipment you. The outdoor air introduction port having the outdoor air introduction duct connection portion and the indoor air supply port having the indoor air supply duct connection portion are communicated with each other by an air supply path including an air supply fan and an air supply casing. The outdoor air outlet and the indoor air inlet are communicated by an exhaust path including an exhaust fan and an exhaust casing, the outdoor air inlet and the outdoor air outlet are provided on a first side surface of the main body, and the indoor air inlet On the second side opposite to the first side of the main body, the indoor air intake port on the lower surface of the main body, the air supply fan provided at the lower part of the motor inside the main body, and the exhaust fan Is provided in the upper part of the motor, and the air supply fan and the exhaust fan driven together by the motor are arranged inside a substantially rectangular parallelepiped ventilation device main body, and the dust of the outside air is disposed upstream of the air supply casing. The filter is disposed so as to surround a suction portion at a lower portion of the air supply casing, and the outside air passes through the filter from an outer periphery of the filter and is a suction portion at the lower portion of the air supply casing. An air supply path to be introduced into the air casing suction portion, the filter is formed in a substantially cylindrical shape, and is configured by an air passage through which the outside air passes from the outer cylindrical surface of the filter to the inner cylindrical surface, An opening for attaching and detaching a filter is provided, a closing part for closing the opening is provided, and the closing part is fastened by a lower surface of the main body having the opening and a fastening part, A simultaneous supply / discharge type characterized in that a substantially circular barrier portion smaller than the inner diameter of the substantially cylindrical filter is provided below the intake passage portion below the suction portion. Exhaust device. Claims wherein the space between the barrier portion and the closure portion is provided, characterized in that is brought into contact with a substantially outer periphery of the barrier portion on the outer peripheral portion of the convex wall portion is provided to the barrier portion of the closure part Item 3. The simultaneous supply / exhaust type ventilator according to item 1 or 2 . The fastening portion that fastens the closing portion and the lower surface of the main body includes a fixing and holding claw portion and a receiving portion into which the claw portion is fitted, and a plurality of the claw portions and the receiving portions are arranged concentrically. The simultaneous supply / exhaust type ventilator according to any one of claims 1 to 3 , wherein the claw portion and the receiving portion are brought into contact with and fitted by rotation of the closing portion. In the fastening portion, the receiving portion is formed by a hole portion into which the claw portion is inserted and a support portion that supports the claw portion, and the claw portion has an inclined portion at a contact portion with the hole portion. 5. The simultaneous supply / exhaust type ventilator according to claim 4, wherein the claw portion and the support portion are fitted to each other by a rotational displacement formed while the inclined portion and the end portion of the hole portion are in contact with each other. The hourly discharge type ventilator according to claim 4 or 5, wherein the provision of the projections on side abutting each other of the receiving tip section and the claw tip portions. The simultaneous supply / exhaust type ventilator according to any one of claims 1 to 6 , wherein the closing part has a holding part for the filter. The hourly exhaust ventilation equipment according to any one of claims 1 to 7, wherein the closure, characterized in that it is formed in a substantially circular shape. The simultaneous supply / exhaust type ventilation device according to claim 7 or 8 , wherein the filter holding portion is formed in a concave shape into which the end of the filter can be inserted. The simultaneous supply / exhaust type ventilator according to any one of claims 1 to 9 , wherein the ventilator has a substantially square main body shape.

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