JP6545382B2 - Ventilation fan - Google Patents

Description

  The present invention relates to a ventilating fan having a passage limiting function component such as a fan guard, a filter or a shutter at an exhaust suction port.

  A ventilation device mounted on a pipe such as a ventilation pipe embedded in a ventilation opening of a wall or a ceiling and providing a fan motor to a ventilation device for ventilating indoor air has a body frame with a frame around the periphery and a central portion of the body frame There is a ventilating fan including a bell mouth corresponding to a suction port of a fan to be provided, and a grill attached so as to cover the body frame and the filter portion. Further, Patent Document 1 discloses a technique for attaching to a front surface of a main body frame when a functional component for restricting passage of an object such as a filter or a fan guard is attached to a suction port for dust removal or contact prevention to blades. ing. Hereinafter, a functional part that restricts the passage of an object, such as a filter or a fan guard, and a functional part that restricts the passage of an air flow, such as a shutter, are collectively referred to as a passage restricted functional part.

JP, 2011-144987, A

  The ventilation fan attached to the ventilation pipe has a component such as a terminal block to connect the external power supply on the back side of the main body frame, and therefore, when mounting the passage restriction functional part, it protrudes on the front surface of the main body frame Be worn. Therefore, the thickness of the grille projecting to the indoor side covering the passage limiting functional component and the main body frame is increased, which may give a sense of oppression to the user and impair the design.

  This invention is made in view of the above, Comprising: It aims at obtaining the ventilation fan which provided the passage restriction functional component and suppressed the product protrusion amount to the indoor side by the passage restriction functional component.

  In order to solve the problems described above and to achieve the object, the present invention is a main body having a face plate having a bellmouth-shaped suction port formed around the periphery and holding a fan motor disposed outside the suction port. It has a frame, a passage limiting functional part installed on the indoor side of the suction port of the face plate to restrict the passage of an object or air flow, and a design grille mounted on the outer periphery of the face plate to cover the face plate and the passage limiting functional part A ventilation fan, wherein the passage restriction functional component is provided on an outer periphery of the passage restriction portion having an outer size equal to or smaller than the suction port and provided on the outer periphery of the passage restriction portion and fixed to the main body frame by abutting on a face plate. And the main body frame is provided with a concave attachment groove in which the support legs fit around the suction port of the face plate. The passage limiting functional component is mounted on the main body frame in a state of being buried in the main body frame.

  The ventilation fan according to the present invention has the effect of being able to suppress an increase in the amount of product protrusion to the indoor side even when the passage restriction functional component is mounted on the main body frame.

The model longitudinal cross-sectional view which looked at the state which installed the ventilation fan which concerns on Embodiment 1 of this invention in the ventilation pipe embedded at the wall from the right side. An exploded perspective view of a state where the design grille and the fan guard of the ventilation fan according to the first embodiment are removed The perspective view which looked at the ventilation fan which concerns on Embodiment 1 from indoor direction in the state which removed the design grille The perspective view which looked at the ventilation fan concerning Embodiment 1 from indoor direction The perspective view of the fan guard of the ventilator according to Embodiment 1. Upper sectional view of the indoor side in a state where the design grille of the ventilation fan according to the first embodiment is removed The disassembled perspective view of the indoor side in the state which removed the design grille of the ventilation fan concerning Embodiment 2 of this invention The perspective view of the indoor side in the state which removed the design grille of the ventilating fan concerning Embodiment 2. Upper sectional view on the indoor side in a state where the design grille of the ventilation fan according to the second embodiment is removed Sectional drawing of the connection part of the main body frame of a ventilation fan concerning Embodiment 2, and a filter The figure which shows the modification of the ventilation fan which concerns on Embodiment 1, 2.

  Below, the ventilation fan which concerns on embodiment of this invention is demonstrated in detail based on drawing. The present invention is not limited by the embodiment.

Embodiment 1
FIG. 1 is a schematic vertical cross-sectional view of a state where the ventilation fan according to Embodiment 1 of the present invention is installed in a blast tube embedded in a wall, viewed from the right side. FIG. 2 is an exploded perspective view of the ventilating fan according to the first embodiment with the design grille and the fan guard removed. FIG. 3 is a perspective view of the ventilating fan according to the first embodiment viewed from the indoor direction with the design grill removed. FIG. 4 is a perspective view of the ventilating fan according to the first embodiment viewed from the indoor direction. As shown in FIG. 1, the ventilation fan 1 according to the first embodiment is inserted from an indoor direction 5 into a blower pipe 8 which is embedded in a wall 7 or a ceiling of a building and connects the indoor and the outdoor. In the following description, the indoor side of the ventilation fan 1 is the front, and the outdoor side of the ventilation fan 1 is the rear.

  The ventilation fan 1 has a structure in which a fan guard 200 which is a passage limiting function part and a design grill 300 covering the body frame 100 and the fan guard 200 are attached to the body frame 100, and the body frame 100 is fixed to the wall 7 There is.

  The main body frame 100 is made of resin. As shown in FIG. 2 and FIG. 3, it is formed in the box shape which the outdoor direction 6 opened by the main body front surface 101, the main body upper surface 102, the main body lower surface 103, the main body right side 104 and the main body left side 105 An end face 117 constituted by the main body right side surface 104 and the main body left side surface 105 abuts on the wall 7 when the ventilation fan 1 is mounted indoors. At the left and right ends of the main body front surface 101, product attachment portions 118a and 118b which are in a concave shape and abut on the wall 7 are provided. The product attachment portions 118a and 118b are provided with elongated holes 119a and 119b. The ventilation fan 1 is fixed to the wall 7 by fastening fastening members (not shown) such as wood screws through the long holes 119a and 119b and fastening them to the wall 7.

  Further, at the center of the main body front face 101 which is a face plate, there is provided a cylindrical air channel 106 inserted into the air blowing pipe 8, and the air channel 106 constitutes a suction port for exhaust gas. A peripheral portion formed by the main body front face 101 and the wind tunnel 106 is formed in a bellmouth shape to be a bellmouth portion 107. At an end 108 of the wind tunnel 106 in the outdoor direction 6, a motor attachment portion 110 supported by the motor attachment legs 109 a, 109 b, and 109 c is formed. The blower motor 2 is attached to the motor attachment portion 110. A propeller blade 3 is attached to the blower motor 2, and the propeller blade 3 is rotationally driven, whereby the indoor air passes through the inside of the wind tunnel 106 and is discharged to the outside.

  Further, as shown in FIG. 4, an airtight packing 115 is attached to the outer peripheral surface 111 of the wind tunnel 106. The external power supply line is connected to the main body rear space 120 sealed by the outer peripheral surface 111 and the airtight packing 115, the main body front surface 101, the main body upper surface 102, the main body lower surface 103, the main body right side surface 104 and the main body left side surface 105, and the wall 7. A terminal block unit 112, a shutter plate driving unit 113 for opening and closing a shutter plate 307 of the design grill 300, and an electric unit 114 for housing electric parts and electronic parts such as switches and boards are attached.

  The design grill 300 is formed in a box shape with the outdoor direction 6 open so as to cover the main body frame 100 and the fan guard 200 installed on the wall 7. In the design grill 300, hooks 303a, 303b, 303c, and 303d provided on the inside of the upper surface 301 and the lower surface 302 of the grill are provided on the upper surface 102 and the lower surface 103 of the main body frame 100. , 116b, 116c, and 116d, so that the main body frame 100 is detachably locked. Further, an opening 305 is formed in the grille front surface 304. A shutter plate 307 for opening and closing the opening 305 is pivotally supported via a pivot portion 306. Furthermore, the shutter plate 307 is connected to the grill front 304 by a closing spring 308.

  When the ventilation fan 1 is activated, the rod 121 rotatably fixed to the main body frame 100 is held after being rotated by a predetermined angle in the direction A shown in FIG. It is opened and the opening 305 is opened. Further, when the ventilation fan 1 is stopped, the rotational holding of the shutter plate driving unit 113 is released, the shutter plate 307 is closed by the force of the closing spring 308, and the opening 305 is closed.

  FIG. 5 is a perspective view of the fan guard of the ventilation fan according to the first embodiment. FIG. 6 is an upper cross sectional view of the indoor side in a state where the design grille of the ventilation fan according to the first embodiment is removed. The fan guard 200 is made of resin. As shown in FIG. 5, the fan guard 200 has a disk-shaped grid portion 201 and support legs 202, 203, 204, 205 protruding from the outer peripheral surface 209 of the grid portion 201 in the circumferential cross direction. There is. The grid unit 201 is a passage restriction unit that restricts the passage of an object such as a finger for safety. The support leg 205 is provided with a through hole 206 for screw fixation. The guard front face 207 is provided with a handle 208. The fan guard 200 is fixed to the main body frame 100 such that the handle 208 faces in the indoor direction 5 and the disc central axis of the lattice portion 201 coincides with the cylindrical central axis of the wind tunnel 106. As shown in FIG. 2 and FIG. 3, mounting grooves 122, 123, 124, 125 in which the support legs 202, 203, 204, 205 of the fan guard 200 are fitted respectively on the front surface 101 of the main body frame 100 and the bell mouth 107. Is provided, whereby the guard front face 207 coincides with the main body front face 101 without projecting in the indoor direction 5. In other words, the fan guard 200 is disposed flush with the main body front face 101.

  The gap of the grid portion 201 constituting the passage limiting functional component is less than 12 mm smaller than the diameter of the test finger used for the test of protection from the charged portion defined in the Electrical Appliances and Materials Safety Act. Can prevent the finger from being inserted into the When the gap of the grid portion 201 is less than 12 mm, it corresponds to the second grade protection grade of IEC 60529, which is a standard of the International Electrotechnical Commission, also called IEC (International Electrotechnical Commission). The gap of the grid portion 201 is not limited to less than 12 mm.

  Here, although the fan guard 200 is embedded in the main body frame 100 so that the fan guard 200 is flush with the front surface 101 of the main body, the fan guard 200 may be partially embedded in the main body frame 100. That is, only a part of the rear end side of the fan guard 200 may be buried in the main body frame 100. Alternatively, the fan guard 200 may be embedded in the main body frame 100 such that the front end of the fan guard 200 is recessed relative to the main body front surface 101.

  The mounting groove 125 in which the support leg 205 is fitted is provided with a screw hole 126, and corresponds to the mounting groove side surface 127 of the mounting groove 122 at the symmetrical position of the mounting groove 125 across the air channel 106. An insertion hole 128 is provided in which the tip of the support leg 202 is inserted. The fan guard 200 is fixed to the main body frame 100 by inserting the support leg 202 into the insertion hole 128 and fastening the fixing screw 4 to the screw hole 126 through the through hole 206. Although the handle 208 protrudes in the indoor direction 5 from the front surface 101 of the main body, it is inserted into the groove 309 provided in the design grill 300 when the design grill 300 is attached, and the fan guard 200 is not dropped even if the fixing screw 4 is dropped You are getting

  Furthermore, the diameter of the outer circumferential surface 209 is smaller than the inner diameter of the wind tunnel 106. In other words, the grid portion 201 has an outer size smaller than that of the suction port. Therefore, the lattice portion 201 does not press the back surface space 120 even if the disc thickness is increased, and does not contact the bell mouth portion 107, so that the deterioration of the function of sucking in air efficiently is suppressed. The outer peripheral surface 209 may be in contact with the bell mouth portion 107 as long as a decrease in suction efficiency can be tolerated.

  In the first embodiment, the outer peripheral surface 209 of the lattice portion 201 is a cylindrical shape parallel to the disc axis, but the invention is not limited to this shape, and the bell mouth portion does not contact with the bell mouth portion 107. A shape along the surface of 107 may be used.

The ventilating fan 1 according to the first embodiment can suppress the increase in the product projecting thickness to the indoor side while providing the fan guard 200 on the front surface of the main body frame 100.

Second Embodiment
FIG. 7 is an exploded perspective view of the indoor side in a state where the design grille of the ventilation fan according to Embodiment 2 of the present invention is removed. FIG. 8 is a perspective view of the indoor side in a state where the design grille of the ventilating fan according to the second embodiment is removed. FIG. 9 is an upper cross sectional view of the indoor side in a state where the design grille of the ventilation fan according to the second embodiment is removed. In the second embodiment, as shown in FIGS. 7 and 8, a filter 400 which is a passage limiting functional component is attached to the main body frame 500 instead of the fan guard 200. The shape of the main body frame 500 and the shapes and structures of the other components are the same as in the first embodiment unless specifically described below.

In the ventilation fan 1 according to the second embodiment, as shown in FIG. 7 and FIG. 8, the diameter of the circular outer frame 401 of the filter 400 is the same diameter as the boundary between the main body front surface 501 and the bell mouth portion 502. ing. That is, the outer frame 401 is provided with an outer frame 401 having an outer shape larger than the suction port around the collection net 402. The collection net 402 is a passage restriction portion that restricts the passage of insects and dust. As shown in FIG. 9, the filter 400 is composed of an outer frame 401 and a collection net 402 stretched on the inner side thereof. The filter 400 includes an insertion portion 403 in the circumferential outer direction of the outer frame 401. The filter 400 includes, in the circumferential inner direction, a fixing surface 404 having a U-shaped hole 405 for screw fixing, a handle 406, and a relief portion 407 for not inhibiting the movement of the rod 121. On the other hand, the main body front surface 501 of the main body frame 500 and the bell mouth portion 502 are provided with a filter attachment portion 503 which is a passage restriction functional component attachment portion formed with the same dimensions as the outer frame 401 in outer diameter and depth. . Screw holes 505 are provided in the mounting surface 504 of the filter mounting portion 503. The attachment side 506 of the filter attachment portion 503 is provided with an insertion hole 507. The filter 400 is fixed to the main body frame 500 by inserting the insertion portion 403 into the insertion hole 507 and fastening the fixing screw 4 to the screw hole 505 through the U-shaped hole 405.

  According to the above structure, the filter 400 is attached to the main body frame 500 without any gap, and at the same time, the frame front surface 408 of the filter 400 matches the main body front surface 501 without projecting in the indoor direction 5. Further, since the size of the filter attachment portion 503 is about the size of the bell mouth portion 502, the attachment of the filter 400 to the main body frame 500 does not press the back surface space 508 of the main body.

  FIG. 10 is a cross-sectional view of a connecting portion between a body frame and a filter of a ventilation fan according to a second embodiment. As shown in FIG. 10, at the angle between the frame front surface 408 of the outer frame 401 and the frame inner circumferential surface 409, the shape of the bell mouth portion 502 formed on the main body front surface 501 of the main body frame 500 is extended. A filter bell mouse portion 410 is formed. That is, the cross-sectional shape of the outer frame 401 is an extended shape of the bell mouth portion 502. That is, the outer frame 401 abuts on the indoor end of the bell mouth portion 502 which has a bell mouth shape, and extends the bell mouth shape to the indoor side. With the filter 400 attached to the main body frame 500, the bell mouth portion is completed by the bell mouth portion 502 and the filter bell mouth portion 410 being continuous, and air can be efficiently sucked. .

With the above-described structure, the ventilation fan 1 according to the second embodiment has an effect of suppressing an increase in the thickness of the product projecting to the indoor side while providing the filter 400 on the front surface of the main body frame 500.

FIG. 11 is a view showing a modification of the ventilation fan 1 according to the first and second embodiments. In the first embodiment and the second embodiment, the passage limiting functional component is the fan guard 200 or the filter 400, but as shown in FIG. 11, the passage limiting functional component is a passage limiter that restricts the passage of air flow. The shutter unit 600 may be provided with the shutter. The shutter unit 600 includes a shutter blade 602 which is a passage restriction unit, and an outer frame 601. When the passage restriction functional component is the shutter unit 600, the design grill 700 having no shutter function is attached to the main body frame 100.

  The configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

DESCRIPTION OF SYMBOLS 1 Ventilation fan, 2 Fan motor, 3 propeller blade, 4 fixed screw, 5 indoor direction, 6 outdoor direction, 7 wall, 8 air duct, 100, 500 main body frame, 101, 501 main body front surface, 102 main body upper surface, 103 main body lower surface , 104 body right side surface, 105 body left side surface, 106 wind tunnel, 107, 502 bell mouth portion, 108 end portion, 109a, 109b, 109c motor mounting leg portion, 110 motor mounting portion, 111 outer peripheral surface, 112 terminal block unit, 113 Shutter plate drive unit, 114 electric unit, 115 airtight packing, 116a, 116b, 116c, 116d Grill hooking part, 117 end face, 118a, 118b product mounting part, 119a, 119b long hole, 120, 508 body rear space, 121 rod , 122, 123, 124, 125 mounting groove, 126, 505 screw hole, 127 mounting groove side surface, 128 , 5 07 insertion hole, 200 fan guard, 201 lattice portion, 202, 203, 204, 205 support leg, 206 through hole, 207 guard front surface, 208, 406 handle, 209 outer periphery Surface, 300,700 Design grille, 301 Grille upper surface, 302 grille lower surface, 303a, 303b, 303c, 303d hooking claw, 304 grille front surface, 305 opening portion, 306 shaft support portion, 307 shutter plate, 308 closing spring, 309 groove, 400 filter, 401 , 601 outer frame, 402 collection net, 403 insertion portion, 404 fixed surface, 405 U-shaped hole, 407 escape portion, 408 frame front surface, 409 frame inner circumferential surface, 410 filter bell mouth portion, 503 filter Mounting part, 504 mounting surface, 506 mounting side, 600 shutter unit, 602 Shutter blade.

Claims (4)

Ambient has a faceplate inlet is formed bell mouth shape, a body frame holding the fan motor disposed in the outdoor side of the suction port, the fan is installed in the indoor side of the suction port of said face plate A fan guard for preventing contact between the face plate and the design grille mounted on an outer peripheral portion of the face plate so as to cover the face plate and the fan guard ,
The fan guard is provided on the outer periphery of the passage limiting portion, which is a collection net or shutter having an outer size smaller than that of the suction port, and the passage limiting portion. And a plurality of fixed support legs,
The main body frame includes a concave mounting groove in which the support leg fits around the suction port of the face plate,
The fan guard is mounted on the main body frame in a state of being buried in the main body frame. The fan guard includes an outer frame larger than the suction port on an outer periphery of the passage restriction portion,
The main body frame includes a concave passage-limiting functional component mounting portion fitted to the outer frame,
The ventilation fan according to claim 1, wherein when the fan guard is mounted on the main body frame, the outer frame is in close contact with the passage limiting functional component mounting portion. The ventilator according to claim 2 , wherein the outer frame abuts on the indoor end of the bellmouth shape, and extends the bellmouth shape to the indoor side. The ventilation fan according to claim 2 or 3 , wherein the fan guard has a knob engaged with the design grille on the indoor side of any one of the passage limiting portion, the support leg, and the outer frame .