JP6975885B2 - Ceiling embedded ventilation fan - Google Patents

Description

The present invention relates to a ceiling-embedded ventilation fan.

Conventionally, it is known that a ceiling-embedded ventilation fan has a structure in which a main body frame and an adapter are separated so that it can be easily installed in the ceiling. (See, for example, Patent Document 1).

Hereinafter, the ceiling-embedded ventilation fan will be described with reference to FIG.

FIG. 4 is a perspective view of a conventional ceiling-embedded ventilation fan 101. A fan case, blades, and a motor are provided in the internal space of the housing 102, and the rotation shaft of the motor is rotated to rotationally drive the blades fixed to the rotation shaft. As a result, the air sucked from the bottom surface of the housing is discharged to the outside of the housing 102 from the exhaust port 105 of the fan case corresponding to the outlet 104. An adapter 103 is attached to the downstream side of the air outlet 104, and the ceiling-embedded ventilation fan 101 ventilates by discharging air from a cylindrical air outlet protruding to the downstream side of the adapter 103.

Japanese Unexamined Patent Publication No. 2003-65582

The ceiling-embedded ventilation fan shown above has a structure in which the main body frame and the adapter are separated so that it can be easily installed in the ceiling. In the case of such a structure, there is a problem that a gap is likely to occur at the joint portion between the main body frame and the adapter, and the airtightness is impaired.

Therefore, the present invention solves the above-mentioned conventional problems, and an object thereof is to suppress air leakage in the vicinity of a joint portion and to realize efficient ventilation.

In order to achieve this object, the ceiling-embedded ventilation fan according to the present invention has a housing having a suction port on the bottom surface and an air outlet on one side surface, and the housing having an upstream opening matching the air outlet. The exhaust surface having the adapter, the air supply port corresponding to the suction port, and the exhaust port corresponding to the air outlet, and having the exhaust port is inside the air outlet surface having the air outlet in the housing. The fan case includes a fan case in contact with the air, and a blower portion for guiding air from the suction port to the air outlet. The fan case has a wall portion protruding downstream from the peripheral edge of the exhaust port and an outer peripheral side from the wall portion. wherein the exhaust port suppressing elastic material leakage of air into the outer peripheral side than the, Bei give a, the air outlet is set to be larger than the exhaust port, forming an exposed surface on the exhaust side of the fan case and, said wall portion, the protrusion height of the downstream direction matches the thickness of the blowing surface of said housing, said elastic member is provided between the inner periphery of the air outlet and the wall portion , Which is sandwiched between the adapter and the exposed surface , thereby achieving the intended purpose.

According to the present invention, it is possible to obtain the effect that air leakage in the vicinity of the joint portion between the fan case and the housing can be suppressed and efficient ventilation can be realized.

Sectional drawing of the ceiling-embedded ventilation fan which concerns on this invention Top perspective view of the ceiling-embedded ventilation fan Exploded view of the ceiling-embedded ventilation fan Perspective view of a conventional ceiling-embedded ventilation fan

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for the purpose of understanding the present invention. The following embodiments are examples that embody the present invention, and do not limit the technical scope of the present invention. In addition, the same parts are designated by the same reference numerals throughout the drawings, and the second and subsequent explanations are omitted.

(Embodiment)
FIG. 1 is a cross-sectional view of a ceiling-embedded ventilation fan according to the present embodiment.

As shown in FIG. 1, the ceiling-embedded ventilation fan 1 according to the present invention includes a ventilation fan main body 2 and a louver 3.

The ventilation fan main body 2 includes a housing 4, an adapter 5, a fan case 6, and a blower portion 7.

The housing 4 is a square tubular body having an internal space and is made of metal. The housing 4 includes a suction port 8 and an outlet 9.

The suction port 8 is provided on the bottom surface of the housing 4, and is an opening for sucking air into the internal space of the housing 4. The suction port 8 constitutes an entrance to the air blowing portion 7 for indoor air when the ceiling-embedded ventilation fan 1 is operated.

The air outlet 9 is provided on one side of any one of the four side surfaces adjacent to the bottom surface, that is, one side surface, and is an opening for blowing out the air sucked into the internal space of the housing 4 to the outside of the housing 4. Here, one side surface provided with the outlet 9 is particularly referred to as an outlet surface.

The housing 4 further includes a top plate 10 and a side plate 11.

The top plate 10 has a rectangular shape and is provided on a surface facing the bottom surface where the suction port 8 is provided, that is, on the top surface. The top plate 10 includes an upright surface 12 that stands vertically from the top surface at one end.

The side plate 11 is provided as four plates forming four side surfaces adjacent to the top plate 10. The four side plates 11 have the same outer shape (outer circumference), but one of them has an opening corresponding to the outlet 9.

Since the outer shapes of the four side plates 11 are all the same shape, for example, it is not necessary to manufacture a plurality of molds for manufacturing the metal side plates 11, and the cost for manufacturing the side plates 11 can be reduced. can.

The erection surface 12 is erected vertically to the top surface through the inner circumference of the air outlet 9 of the side plate 11, and the details will be described later.

The adapter 5 includes an adapter plate 13 that connects to the housing 4, and a duct connection portion 14 that connects the duct.

The adapter plate 13 is provided on the downstream side of one side surface of the housing 4 where the outlet 9 is provided. The adapter plate 13 has a rectangular shape corresponding to one side surface provided with the air outlet 9, but has a height up to the upper end portion of the upright surface 12 in the top plate 10 direction, that is, in the height direction. The adapter plate 13 has an opening corresponding to the outlet 9, and the opening communicates with the duct connection portion 14.

The duct connection portion 14 is erected from the adapter plate 13 toward the downstream side, and has a rectangular shape on the upstream side and a cylindrical shape on the downstream side. The duct connection portion 14 connects the internal space of the adapter 5 to the air outlet 9, and guides the exhaust gas blown out from the inside of the housing 4. By connecting the indoor side end of the duct that communicates indoors and outdoors with the duct connecting portion 14, the exhaust of the ceiling-embedded ventilation fan 1 can be discharged to the outside.

The fan case 6 has an air supply port 15 corresponding to the suction port 8 and an exhaust port 16 corresponding to the air outlet 9, and the exhaust surface having the exhaust port 16 is the outlet surface having the air outlet 9 in the housing 4. Inscribed.

The blower portion 7 is provided inside the housing 4. The blower portion 7 includes a blade 17 and a motor 18.

The blade 17 is arranged inside the fan case 6. The blade 17 has a cylindrical shape, and the bottom surface of the cylindrical shape is arranged so as to face the suction port 8. The blade 17 is provided with a plurality of fins on the side surface, and the blade 17 is rotated in the circumferential direction in a cylindrical shape to generate an air flow from the suction port 8 toward the air outlet 9. The blade 17 can be used, for example, by a sirocco fan.

The motor 18 is fixed to the top plate 10 and has a rotating shaft protruding toward the internal space of the fan case 6. The motor 18 rotates and drives the blades 17 fixed to the rotating shaft by rotating the rotating shaft by feeding power.

The louver 3 has a plate shape having a ventilation opening in the central portion, for example, has two needle ridges on opposite sides, and has a needle ridge corresponding to the needle ridge provided in the housing 4. By engaging with the engagement structure, the distance from the suction port can be variably installed on the ceiling on the indoor side.

FIG. 2 is a top perspective view of the ventilation fan according to the present embodiment.

The outlet 9 provided on the outlet surface is larger than the exhaust port 16 of the fan case 6. That is, in a state where the exhaust surface having the exhaust port 16 is inscribed in the air outlet surface having the air outlet 9 in the housing 4, the difference in opening size between the air outlet 9 and the exhaust port 16 on the exhaust surface of the fan case 6, U-shape. The exposed surface 19 of the mold is formed. Further, the upright surface 12 is located at the upper end opening in the U-shape.

The fan case 6 includes a wall portion 20 projecting downstream on the peripheral edge of the exhaust port 16. The height of the wall portion 20 protruding in the downstream direction coincides with the thickness of the blowout surface of the housing 4. The fan case 6 includes a U-shaped elastic material 21a that matches the shape of the exposed surface 19 between the exposed surface 19, that is, the inner periphery of the wall portion 20 and the air outlet 9.

The outer peripheral side plane of the upright surface 12 is located on the same plane as the outer peripheral side plane of the side plate 11 having the air outlet 9, and one side constituting the lower end of the upright surface 12 is one side of the upper end of the air outlet 9. Constitute. The lower end of the upright surface 12 is provided with the elastic material 21b at a position corresponding to the peripheral edge of the air outlet 9.

The elastic material 21a and the elastic material 21b are made of the same elastic material, and the linear elastic material 21b closes the opening in the U-shape of the elastic material 21a, so that the central portion of the elastic material 21a is open. Is formed. The entire downstream side of the elastic material 21 is suppressed by the outer peripheral surface of the rectangular opening on the upstream side of the adapter plate 13. That is, the elastic material 21 is sandwiched between the wall surface having the exhaust port 16 of the fan case 6 and the adapter plate 13. Therefore, there is no gap between the housing 4 and the adapter 5, that is, the airtightness can be maintained, air leakage can be suppressed, and efficient ventilation can be realized. Further, since the elastic material 21 is arranged on the exposed surface 19, air leaks between the wall surface having the exhaust port 16 of the fan case 6 and the side plate 11 (outlet surface), and the adapter plate 13 and the side plate 11 It is possible to block the air leakage between the (outlet surface) and the air at the same time. Therefore, the area where the elastic material 21 may leak can be halved and the risk of leakage can be reduced as compared with the case where the elastic material 21 is arranged on both the inner and outer circumferences of the side plate 11. Naturally, it can also contribute to the reduction of material cost and work cost at the time of manufacturing.

In the above configuration, since the upper side (one side) of the exhaust port 16 is located on the same plane as the top plate 10, the elastic material 21b is arranged at the lower end of the upright surface 12 of the top plate 10. However, in a configuration in which the upper side of the exhaust port 16 does not match the top plate 10, the exposed surface has a square shape (rectangular shape with an open center), and both the elastic material 21a and the elastic material 21b are arranged in the fan case 6. become.

The top plate 10 includes a motor fixing portion 22 for fixing the motor 18, and the upper end side of the upright surface 12 is located above the upper end of the motor 18 protruding from the top plate 10. Further, a motor protection portion 23 having a height substantially equal to the upper end side of the erection surface 12 is provided on the side opposite to the erection surface 12 with the upper end of the motor 18 as a reference. As the motor protection unit 23, for example, an electrical box that protects the charging unit can be used.

Therefore, when the ceiling-embedded ventilation fan 1 is placed on the floor with the top surface facing downward, for example, the upper surface of the motor 18 does not come into direct contact with the floor and is protected from the impact applied to the motor 18. Can be done. In particular, the motor 18 is vulnerable to impact even in the part of the ceiling-embedded ventilation fan 1. For example, if the axis is displaced due to impact, abnormal noise is generated when the blade 17 rotates, but this risk is reduced by protection from impact. can do.

FIG. 3 is a perspective exploded view of the ceiling-embedded ventilation fan.
The side plate 11 includes a top bent portion 24, a side bent portion 25, and a polymerized region 26.

The top bending portion 24 is a bend perpendicular to the side plate 11 extending from the upper end side of the side plate 11 toward the center of the top plate 10. The top bending portion 24 of each side plate 11 is overlapped and fixed above the corresponding end sides of the top plate 10.

The side plate 11 provided with the air outlet 9 is provided so that the air outlet 9 reaches the end portion 27 of the top bending portion 24, and the vertical surface 12 passes through the inner circumference of the air outlet 9. It is arranged at the end portion 27 and stands vertically on the top surface. As a result, the outer peripheral side plane of the upright surface 12 and the side plate 11 provided with the air outlet 9 are located on the same plane. Then, one side of the lower end constituting the erection surface 12 constitutes the upper side of the outlet 9. As a result, the top plate 10 and the side plate 11 provided with the air outlet 9 are accurately positioned, and the blower portion 7 fixed to the top plate 10 and the side plate 11 provided with the air outlet 9 are also accurately positioned. NS. That is, the deviation of the side plate 11 from the upstream to the downstream direction is unlikely to occur, the deviation between the adapter plate 13 and the housing 4 can be suppressed, and it is possible to contribute to the suppression of air leakage.

The side bent portion 25 is a bend perpendicular to the side plate 11 extending parallel to the adjacent side plate 11 from one side surface of the side plate 11. The side bent portion 25 of each side plate 11 is overlapped and fixed to the polymerized region 26 of the side plate 11 adjacent to one of the side plates 11 from the outer peripheral side of the housing 4.

The ceiling-embedded ventilation fan according to the present invention can be applied to an air conditioner, a blower, or the like, which is a ventilation device in which separate parts constituting a flow path are engaged.

1 Ceiling-embedded ventilation fan 2 Ventilation fan body 3 Louver 4 Housing 5 Adapter 6 Fan case 7 Blower 8 Suction port 9 Air outlet 10 Top plate 11 Side plate 12 Standing surface 13 Adapter plate 14 Duct connection 15 Air supply port 16 Exhaust port 17 Blade 18 Motor 19 Exposed surface 20 Wall part 21, 21a, 21b Elastic material 22 Motor fixing part 23 Motor protection part 24 Top surface bending part 25 Side bending part 26 Layered area 27 End part 101 Ceiling embedded type Ventilation fan 102 Housing 103 Adapter 104 Air outlet 105 Exhaust port

Claims (5)

A housing with a suction port on the bottom and an outlet on one side,
An adapter that is connected to the housing with the upstream opening aligned with the outlet,
A fan case having an air supply port corresponding to the suction port and an exhaust port corresponding to the air outlet, and an exhaust surface having the exhaust port inscribed in the air outlet surface having the air outlet in the housing.
A blower portion for guiding air from the suction port to the air outlet is provided.
The fan case is
A wall portion protruding in the downstream direction on the peripheral edge of the exhaust port,
An elastic material that suppresses air leakage to the outer peripheral side of the exhaust port is provided on the outer peripheral side of the wall portion .
By making the air outlet larger than the exhaust port, an exposed surface is formed on the exhaust surface of the fan case.
The wall is
The height of protrusion in the downstream direction coincides with the thickness of the outlet surface of the housing.
The elastic material is
It is provided between the wall portion and the inner periphery of the air outlet.
A ceiling-embedded ventilation fan sandwiched between the adapter and the exposed surface. The housing is
One side of the outlet is located on the same plane as the top surface of the housing.
The fan case is
One side of the exhaust port is located on the same plane,
The housing is
The rectangular top plate that constitutes the top surface and
The four side plates forming the four sides adjacent to the top plate are provided.
The top plate is
It is provided with an upright surface that stands perpendicular to the top surface through the inner circumference of the air outlet of the side plate that forms the air outlet surface.
The top plate is
A motor fixing part for fixing the motor constituting the blower part is provided.
The upper end side of the erecting surface is
Located above the upper end of the motor protruding from the top plate,
The ceiling-embedded ventilation fan according to claim 1, wherein an electrical box having substantially the same height as the upper end side thereof is provided as a motor protection portion on the side opposite to the erecting surface with respect to the upper end of the motor. The erecting surface is
It is located on the same plane as the outer peripheral side plane of the side plate forming the blowout surface.
The ceiling-embedded ventilation fan according to claim 2 , wherein one side constituting the erection surface constitutes one side of the outlet. The erecting surface is
The ceiling-embedded ventilation fan according to claim 3 , wherein the elastic material is provided at a position corresponding to the peripheral edge of the air outlet. The four side plates are
The top bending part that overlaps the top plate,
A side bend that overlaps the side plate adjacent to one side,
The ceiling-embedded ventilation fan according to claim 2 , further comprising an area to be polymerized in which the side bent portions of the side plates adjacent to the other side overlap.

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