JP5396909B2 - Recessed ceiling ventilation fan - Google Patents

Description

  The present invention relates to a ceiling-embedded ventilation fan that is connected to a duct that is piped behind a ceiling and communicates with the outside, and is embedded in an opening provided in the ceiling.

  Conventionally, what is shown in FIG. 12 as an example of this kind of ceiling-embedded ventilation fan is known (for example, refer patent document 1).

  The configuration will be described below with reference to FIG.

As shown in the figure, a box-shaped frame 104 having a suction port 102 covered with a louver 101 on the lower surface and provided with a discharge port 103 on a side surface, an adapter 106 for connecting a duct 105 communicating with the outdoors, and a frame 104 , A scroll-shaped casing 108 having an orifice 107 as a suction port on the lower surface thereof, a centrifugal blower blade 109 disposed in the casing 108 for blowing air, and an electric motor 110 for rotationally driving the centrifugal blower blade 109. It was composed.
JP 2003-65581 A

  In such a conventional ceiling-mounted ventilation fan, when the dust or the like in the room adheres to the centrifugal fan 109 due to long-time operation and the required ventilation performance cannot be exhibited, the centrifugal fan 109 is removed to the indoor side. Even if it is attempted to clean, the orifice 107 cannot be removed because it obstructs, and therefore the louver 101 is removed and the centrifugal blower blade 109 is cleaned inside the frame 104, but is contained in the casing 108. As a result, the louver 101 is generally attached to a mounting portion provided inside the frame 104 by a louver spring, so that it is not easy to attach or detach the louver at a high place such as the ceiling.

  The present invention solves such a conventional problem, and it is possible to easily remove the centrifugal blower blade from the frame embedded and attached at a high position on the back of the ceiling, and to improve the cleaning performance. An object is to provide a ceiling-mounted ventilation fan.

  In order to achieve the above object, the ceiling-embedded ventilation fan of the present invention is installed by being inserted into the back of the ceiling and having a frame-like frame having a frame opening facing the indoor side on the lower surface, A scroll-shaped casing containing a centrifugal blower blade, having a casing opening having a diameter larger than the outer diameter of the centrifugal blower blade on the lower surface and having a discharge port on a side portion, and the centrifugal blower blade being freely attachable to and detachable from its rotating shaft And a louver that covers the frame opening from the indoor side, an orifice that forms a suction port of the casing is used in the casing opening, and a tool is used in the lower space in the frame from the frame opening. A louver frame having a louver opening of a size that allows the centrifugal blower blades to pass therethrough, and the louver. It is made of a grill unit for opening and closing the over opening.

  Another means is that the grill portion is provided so as to be rotatable in the vertical direction with the one side end portion as a support shaft, and the one side portion opposite to the one side end portion is detachably held by the louver frame. It is set as the structure which carries out.

  Further, another means is provided with a holding portion that repeatedly engages and disengages from the grill portion by a finger pressing force in the vicinity of the louver opening of the louver frame.

  Further, the other means is such that the rotation support shaft of the grill part can be freely attached to and detached from a hook-shaped locking part provided at one end of the grill part and an engagement part provided in the louver frame. It is configured to be freely engaged.

  The other means is provided with a plurality of locking portions and engaging portions, and the plurality of locking portions or engaging portions are provided at different distances from the horizontal center line of the grill portion. is there.

  Another means is a ceiling-embedded ventilation fan in which the louver is detachably attached to a mounting portion provided inside the frame by a louver spring made of resin and provided on the back surface of the louver. An edge is held by a holding portion formed integrally with the louver frame so as not to be positioned on the louver opening in plan view, and the holding portion has an insertion opening for a louver spring, and the insertion opening is It is formed so as to open outward.

  Another means is that the insertion opening of the louver spring holding portion is narrower than the wire diameter of the louver spring.

  Another means is that the louver is made of PP resin.

  Another means is that a filter is detachably attached to the back side of the grill portion.

  In addition, the other means includes a plurality of types of grill portions, and is configured to be selectively attached to the louver frame.

  According to the present invention, the orifice is provided in the casing opening on the lower surface of the casing so as to be detachable from the frame opening in the lower space in the frame without using a tool, and the louver has a size that allows the centrifugal blower blade to pass inside. It consists of a louver frame with a louver opening and a grill that opens and closes the louver opening, so that no tools are required to attach and detach the orifice in a narrow space inside the frame mounted at a high position on the back of the ceiling. The blades can be attached and removed without removing them, improving the cleaning performance.

  In addition, the grill portion is provided so as to be rotatable in the vertical direction with the one side end portion as a support shaft, and the one side portion opposed to the one side end portion is configured to be detachably held by the louver frame. Therefore, the grille part can be rotated and opened with its one side end as a support shaft, so that the grille part can be opened and closed with one hand, making the work easier and supporting the body with the other hand. This improves safety during work.

  In addition, by providing a holding part that repeatedly engages and disengages from the grille part by the finger pressing force in the vicinity of the louver opening of the louver frame, the grille part can be opened and closed with a small force that can be pushed by a finger. The opening and closing of the part becomes easier.

  Further, the rotation support shaft of the grill part is engaged with a hook-shaped locking part provided at one end of the grill part and an engagement part provided on the louver frame so as to be rotatable and detachable. By comprising, when a grill part opens and closes, it can prevent that a grill part falls by a hook-shaped latching | locking part, and can prevent injury by this and damage of components. Moreover, the lock | rock of a latching part is removed, and it will wash | clean after removing a grille part.

  Also, a plurality of engaging portions and engaging portions are provided, and the plurality of engaging portions or engaging portions are provided at different distances from the center line in the left-right direction of the grill portion. When attaching the grille part by mistake, it is not possible to attach the multiple locking parts and the corresponding engagement parts because they are not aligned. Can be prevented.

  The louver spring is held by a holding portion formed integrally with the louver frame so as not to be positioned on the louver opening in a plan view at the louver opening edge, and the holding portion has an insertion opening for the louver spring. Since the insertion opening is formed so as to open outward, the louver spring holding portion prevents a decrease in the air volume and an increase in noise, and does not interfere with the operation when removing the internal orifice and the centrifugal blower blade.

  In addition, the insertion opening of the louver spring holding part is narrower than the wire rod diameter of the louver spring. Once the louver spring is mounted, the louver spring is separated from the holding part by the tension of the louver spring when it is attached to the frame. It can be prevented from coming off and coming off.

  In addition, since the louver is made of PP resin that is resistant to oil or the like, the strength of the louver can be maintained even if an opening is provided so that the centrifugal blower blade can be taken out.

  In addition, since the filter is detachably attached to the back side of the grill part, the filter can be attached / detached and maintained only by opening / closing the grill part without removing the louver, thereby improving the cleaning property.

  In addition, it has multiple types of grille parts and can be selectively attached to the louver frame. Instead of replacing the entire louver, only the grille part that greatly affects the design and ventilation function required by the installation environment is replaced. Therefore, it can respond easily and inexpensively.

Ceiling embedded type ventilation fan of the present invention, the frame has a casing opening of larger diameter than the outer diameter of the centrifugal fan blades in the casing lower surface, the orifice above the openings forming the inlet of the casing, the frame opening The louver is provided detachably in the lower space inside without using a tool, and the louver has a louver frame having a louver opening large enough to allow the centrifugal blower blades to pass therethrough, and a grill part for opening and closing the louver opening. When cleaning the blades, the orifice can be removed without using a tool, and the blade can be removed without removing the louver by opening the grille of the louver. Have

Further, grill unit, as well as provided an end pivotably in the vertical direction to the support shaft, and configured to hold detachably to one side opposite to the one end to the louver frame Since the grille portion is rotated and opened with its one side end portion as a support shaft, the louver opening can be opened and closed by disengaging the holding of the one side portion with one hand.

In the vicinity Le Ba opening having thereon a holding portion which repeats engagement and break away the grill portion in the pressing force of the finger, it is possible to open and close the grille with a small force of the push of a finger.

Further, the rotation shaft of the grill portion, and the locking portion of the hook-shaped provided at one end of the grill portion and an engagement portion provided on the louver frame freely and detachably rotation engagement When the grille portion is rotated and opened, the grille portion does not fall by the hook-like locking portion even if the hand is released.

Further, it provided plurality engaging portion and the engaging portion respectively, the plurality of the engaging portion or the engagement portion, which is provided at a position different distances from the left and right direction center line of the grille vanes of When installing the grille part after maintenance, even if the grille part is mistakenly attached upside down, it cannot be attached because the positions of the multiple engaging parts and the corresponding engaging parts do not match. Become.

Moreover, Le Ba, in the ceiling-embedded-type ventilating fan removably mounted to a mounting portion provided in the interior of the frame by the louver spring provided on the rear surface is made of resin, the louver spring, the louver opening edge, It is held by a holding part formed integrally with the louver frame so as not to be positioned on the louver opening in plan view, and the holding part has an insertion opening for a louver spring, and the insertion opening opens outward. The louver spring holding portion does not become a resistance to ventilation at the louver opening, and does not hinder the passage of the louver opening when the orifice or the centrifugal blower blade is removed.

Further, the insertion opening of Le Ba spring holding portion, which has narrower than the wire diameter of the louver spring, when the louver spring is mounted once inserted to become difficult to pull out.

It is intended that the Le Ba made of PP resin, even if provided with a louver opening, by the made strong PP resin with respect to such oil contained in the air to exhaust, the ability to maintain the strength.

It is intended fitted with a filter detachably on the back side of the grill portion, when to clean the filter, and opening the grille can filter removable without louvers detachable.

Also includes several grille double, which attaching freely selected louver frame, and select from the different grille of a plurality of design features, it becomes possible to mount the louver frame.

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

(Embodiment 1)
As shown in FIG. 1 to FIG. 3, a box shape that is attached to the back of the ceiling, has an adapter 2 connected to a duct 1 that communicates with the outside on the side surface, and has a frame opening 3 that faces the indoor side and serves as a suction port on the lower surface. Frame 4, a scroll-like casing 7 having a casing opening 5 on the lower surface and a discharge port 6 communicating with the adapter 2 on the side portion inside the frame 4, and an interior of the casing 7. Are provided with a centrifugal blower blade 8 for blowing air to be discharged to the outside through the duct 1 and an electric motor 9 that is detachably fixed to the rotary shaft 9a and rotationally driven. The casing opening 5 is opened with a diameter larger than the outer diameter of the centrifugal blowing blade 8, and an orifice 11 having a suction port 10 having a diameter smaller than the outer diameter of the centrifugal blowing blade 8 is formed in the casing opening 5 from below. And a louver 12 that covers the frame opening 3 from the indoor side.

  The louver 12 includes a louver frame 14 having a louver opening 13 having a size that allows the centrifugal blower blade 8 to pass inside, and a grill portion 15 that opens and closes the louver opening 13 described later.

  As shown in FIGS. 4 and 5, the grill portion 15 has one side end portion rotatably supported on the edge portion of the louver opening 13 of the louver frame 14 by the rotation support shaft 16, and the opposite one side. The part is held by the holding part 17. The louver 12 is made of PP resin and is detachably provided on the attachment portion 20 (FIG. 2) inside the frame 4 by a louver spring 19 held by a louver spring holding portion 18 provided on the back surface thereof.

  Then, the holding part 17 will be described in detail with reference to FIG. 6. The holding part 17 includes a pressing part 21, a hooking part 22, and a bending part 23 provided in the vicinity of the edge part of the louver opening 13 of the louver frame 14. 7 and the support hole 24 provided in the grill portion 15, and by pressing the pressing portion 21 with a finger from the holding state, the bending portion 23 is elastically deformed as shown in FIG. The holding portion 22 is released from the support hole 24 to be released from the holding state. When the grill portion 15 is mounted, the flexible portion 23 is elastically deformed by pressing one side portion of the grill portion 15 with a finger. The hook 22 is hooked and held in the support hole 24 by the force to return from the above, and thus the louver opening 13 can be easily opened and closed by the grill 15.

  8 and 9, the rotation support shaft 16 will be described in detail. The rotation support shaft 16 includes an engagement portion 25 provided near the louver opening 13 of the louver frame 14, and an engagement portion. 25, a hook-shaped locking portion 26 that is provided at a position on one side end portion of the grill portion 15 corresponding to 25 and is detachably locked to the engaging portion 25, and includes the engaging portion 25 and the locking portion 26. The plurality of engaging portions 25 or the locking portions 26 are disposed at different distances from the center line C in the left-right direction of the grill portion 15 and the louver frame 14.

  Further, as shown in FIG. 10, the louver spring holding portion 18 of the louver frame 14 is formed integrally with the louver frame 14 at the edge of the louver opening 13 so as not to be positioned on the louver opening 13 in plan view. The louver opening 13 includes a horizontal portion 27 that protrudes horizontally from the edge of the louver opening 14 toward the louver frame 14, and a vertical portion 28 that is vertically formed from the tip of the horizontal portion 27. The lower end of the vertical portion 28 and the back surface of the louver frame 14. The insertion opening 29 of the louver spring 19 opened between the two is formed. The insertion opening 29 is formed narrower than the wire diameter of the louver spring 19. When the louver spring 19 is inserted from the insertion opening 29, the horizontal portion 27 and the vertical portion 28 are elastically deformed and inserted, and the inserted louver spring 19 is inserted. Is hard to come off.

  Although not shown, a filter that collects dust and the like in the exhaust is detachably attached to the back side of the grill portion 15.

  And although the lattice-shaped thing was shown about the grill part 15, the ceiling-embedded ventilation fan of this Embodiment 1 is also provided with the grill part 15A which has the unidirectional crosspiece shown in FIG. In addition to these two types, for example, a device that forms a vent hole on the outer peripheral portion of the grill portion can be provided.

  That is, by replacing only the grill portion 15 without replacing the entire louver 12, it is possible to easily and inexpensively meet the design and ventilation functions required from the installation environment of the ceiling-embedded ventilation fan.

  In the above configuration, when cleaning is performed when dust or the like adheres to the interior of a ceiling-embedded ventilation fan in a long-time operation, the filter attached to the back surface is removed by rotating the grill portion 15 from the holding portion 17. First, the filter can be removed and cleaned without removing the entire louver 12, and then the ceiling back is high for cleaning the centrifugal blower blade 8 to which dust or the like that has passed through the filter adheres. The orifice 11 can be removed from the casing 7 without using a tool in the space of the dark narrow frame 4 provided at the position, and the centrifugal blower blade 8 can be taken out from the lower surface of the casing 7 by removing the orifice 11. A simple casing opening 5 can be formed. Since the louver opening 13 of the louver 12 is opened by rotating the grill portion 15, the centrifugal blower blade 8 can be taken out from the louver opening 13 to the indoor side without removing the louver 12.

  Thus, the centrifugal blower blade is formed from the casing opening 5 formed by removing the orifice 11 without using a tool and the louver opening 13 formed by removing the holding of the grill portion 15 with a small finger pressing force. 8 can be taken out indoors and cleaned, and a ceiling-embedded ventilation fan with improved cleanability can be provided.

  Then, the grill portion 15 is also removed from the engaging portion 25 of the louver frame 14 and cleaned, and then when engaging with the louver frame 14, the engaging portion 25 and the engaging portion are mistakenly attached. 26 becomes a position shifted in the left-right direction, so that the attachment and fixing cannot be performed, and the reverse mounting of the grill portion 15 can be prevented.

  Further, since the louver spring holding portion 18 is not located on the louver opening 13 in a plan view, that is, disposed outside the louver opening 13, the louver spring holding portion 18 does not disturb the flow path of the exhausted air. Therefore, there is no decrease in the air volume or increase in noise due to the above, and it does not interfere with the operation when the internal orifice 11 and the centrifugal blower blade 8 are taken out from the louver opening 13.

  Further, since the louver spring holding portion 18 has an insertion opening 29 narrower than the wire rod diameter of the louver spring 19, once the louver spring 19 is mounted, the louver spring is held by the tension of the louver spring 19 when the louver 12 is attached. Since the insertion opening 29 is opened toward the outside of the louver opening 13, the deformation of the edge of the louver opening 13 due to the tension of the louver spring 19 is minute. .

  Moreover, even if the louver opening 13 is provided, the strength of the louver 12 can be maintained by making the louver 12 made of PP resin that is strong against oil contained in the air.

  INDUSTRIAL APPLICABILITY The present invention has good parts disassembly, assembly, and workability when cleaning the centrifugal blower blade, and is useful for a ventilation device, a centrifugal blower, and an air conditioner that require cleaning of the centrifugal blower blade.

Sectional drawing which shows the ceiling embedded type ventilation fan of Embodiment 1 of this invention The perspective view which shows the attachment or detachment state of the centrifugal ventilation blade, orifice, and louver of the ceiling-embedded ventilation fan The perspective view which shows the opening-and-closing state of the grill part of the louver in the ceiling embedded ventilation fan Perspective view showing the louver Perspective view when the louver grille is opened Sectional drawing which shows the holding | maintenance part of the louver frame and grill part of the louver Sectional drawing which shows the grille part holding release state in the holding part of the louver Sectional drawing which shows the rotation spindle of the grill part of the louver Top view when removing the grill of the louver Sectional drawing which shows the louver spring holding part of a louver The perspective view which shows the mounting state of the different grill part of the same ceiling embedded type ventilation fan Sectional view showing a conventional ceiling-mounted ventilation fan

3 Frame opening 4 Frame 5 Casing opening 6 Discharge port 7 Casing 8 Centrifugal blower blade 9 Motor 9a Rotating shaft 10 Suction port 11 Orifice 12 Louver 13 Louver opening 14 Louver frame 15 Grill portion 15A Grill portion 16 Rotating support shaft 17 Holding portion 18 Louver spring holding part 19 Louver spring 20 Mounting part 25 Engaging part 26 Locking part 29 Insertion opening C Left-right direction center line

Claims (2)

A box-shaped frame that is inserted and attached to the back of the ceiling and has a frame opening facing the indoor side on the lower surface, and is disposed in the frame, contains the centrifugal air blowing blade, and the outer surface has an outer diameter from the outer diameter of the centrifugal air blowing blade. A scroll-shaped casing having a casing opening of a large diameter and having a discharge port on a side portion thereof, an electric motor having the centrifugal blower blade detachably fixed to a rotating shaft thereof, and a louver covering the frame opening from the indoor side. The casing opening is provided with an orifice that forms a suction port of the casing in a detachable manner without using a tool in the lower space in the frame from the frame opening, and the louver is disposed on the inside of the centrifugal fan. A louver frame having a louver opening large enough to allow passage of blades, and a grill part that opens and closes the louver opening. The one side end portion is provided so as to be pivotable in the vertical direction, and the one side portion facing the one side end portion is detachably held by the louver frame. The moving support shaft is configured by engaging a hook-shaped locking portion provided at one end of the grill portion and an engaging portion provided in the louver frame so as to be rotatable and detachable. there is provided a plurality of said engaging portion and the engaging portion respectively, the plurality of the engaging portion or the engagement portion, displaced in the lateral direction at different distances from the left and right direction center line of the grille A ceiling-embedded ventilation fan characterized by being provided at a location. A box-shaped frame that is inserted and attached to the back of the ceiling and has a frame opening facing the indoor side on the lower surface, and is disposed in the frame, contains the centrifugal air blowing blade, and the outer surface has an outer diameter from the outer diameter of the centrifugal air blowing blade. A scroll-shaped casing having a casing opening of a large diameter and having a discharge port on a side portion thereof, an electric motor having the centrifugal blower blade detachably fixed to a rotating shaft thereof, and a louver covering the frame opening from the indoor side. The casing opening is provided with an orifice that forms a suction port of the casing in a detachable manner without using a tool in the lower space in the frame from the frame opening, and the louver is disposed on the inside of the centrifugal fan. A louver frame having a louver opening large enough to allow passage of blades, and a grill part that opens and closes the louver opening. The one side end portion is provided so as to be pivotable in the vertical direction, and the one side portion opposed to the one side end portion is detachably held by the louver frame, A holding portion that repeatedly engages and disengages from the grill portion by a finger pressing force is provided in the vicinity of the louver opening, and a hook-shaped engagement member provided at one end of the grill portion with a rotating support shaft of the grill portion. A stop portion and an engagement portion provided on the louver frame are configured to be pivotably and detachably engaged, and a plurality of the locking portions and a plurality of the engagement portions are provided. The ceiling-embedded ventilation fan, wherein the locking portions or the engaging portions are provided at positions shifted in the left-right direction at different distances from the left-right center line of the grill portion.

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