JP2019158325A - Ventilation device - Google Patents

Abstract

To provide a ventilation device improving construction in retrofit to enhance air tightness.SOLUTION: A guide member (12) having a trapezoidal shape is mounted on two side faces adjacent to a blowout port (5) of a housing (1) as a construction guide. The guide member (12) includes a bulged shape (12c), a small projection part (14b), a protrusion part (13) having a throttle shape and an arch shape (15). Effects of them results in facilitating assembly of an adaptor (3) and the housing (1) during construction to enhance workability, and also improving airtightness between the adaptor (3) and the housing (1).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a ventilation device installed on a ceiling or the like of a building.

  As a conventional ventilation device, a structure in which a housing and an adapter are separated so as to be easily installed on a ceiling is known (see, for example, Patent Document 1).

  A conventional ventilator will be described with reference to FIG.

  A conventional ventilation device includes a blower 102 that is installed on a ceiling of a building, has an opening on a bottom surface, and has an air outlet on one side surface, and forms an air flow from the opening on the lower surface to the air outlet. It is incorporated.

  The construction of ventilation devices can be roughly classified into two methods: a method of attaching the top plate after the ventilation device is installed on the back of the ceiling, and a method of retrofitting the ventilation device on the existing ceiling (retrofit).

  In retrofit, the adapter 103 is first attached to the ceiling. Subsequently, the casing 101 is inserted into the adapter 103 attached from the top side to the bottom side. Thereby, installation is possible with the small opening provided in the top plate. Retrofit can accommodate a variety of situations because it can introduce a ventilator in addition to the existing environment.

JP-A-2018-21739

  However, in retrofit, when the top plate is thin and weak, construction becomes difficult. In other words, since the adapter 103 attached to the top plate is connected to a duct serving as a passage for air, the adapter 103 is loaded with a duct, and when the top plate is thin and weak, the adapter 103 is inclined to the duct side. And since the housing | casing 101 cannot be inserted into the small opening of a top plate according to the inclination of a duct, the housing | casing 101 may not be correctly engaged with the inclined adapter 103. FIG.

  Even in the case of being able to engage, the adapter 103 and the housing 101 are independent in retrofit as described above. For this reason, the gap based on the load of a duct generate | occur | produced between the adapter 103 and the housing | casing 101, and the subject that airtightness was impaired occurred.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a ventilator with improved airtightness while improving workability in a ventilator in which an adapter 103 and a casing 101 are configured independently.

  The ventilator according to the present invention guides air from the suction port to the air outlet, with a housing having a suction port on the bottom surface, an air outlet on one side surface, and a guide member on two adjacent side surfaces adjacent to the one side surface. A blower section; and an adapter that is guided by the guide member by sliding from the top surface side of the housing toward the bottom surface side, and that is fixed to the housing so as to face the one side surface, Is provided with a guide portion having a concave shape and guided by the guide member, and the guide member is configured to guide the adapter by contacting the inner peripheral wall of the recess in the concave shape. It achieves its purpose.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the workability | operativity in the ventilation apparatus with which the adapter and the housing | casing were comprised independently, airtightness can be improved.

The disassembled perspective view of the ventilation apparatus which concerns on this invention. The bottom view of a ventilator. FIG. 3 is a side view of the guide member according to the first embodiment. The back surface perspective view of a guide member. The housing | casing side view which shows the state from which the guide member was removed. The housing | casing side view which shows the state in which the guide member was attached. FIG. 6 is a rear perspective view of a guide member according to Embodiment 2. The detailed figure which showed the structure of the conventional ventilation apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention. In addition, throughout the drawings, the same portions are denoted by the same reference numerals, and the second and subsequent descriptions are omitted.

(Embodiment 1)
First, the configuration of the ventilation device 30 according to the present embodiment will be described with reference to FIGS. 1 and 2. 1 is an exploded perspective view of the ventilator 30 according to the present embodiment, and FIG. 2 is a bottom view of the ventilator 30.

  As shown in FIGS. 1 and 2, the ventilator 30 according to the present invention includes a housing 1, a blower unit 2, and an adapter 3.

  The housing 1 has a box shape with at least one surface opened, and the material is metal or resin. The housing 1 includes a suction port 4, an air outlet 5, and a guide member 12.

  The suction port 4 is a surface facing from the ceiling to the ground, that is, vertically downward, in a state where the lower surface of the ventilation device 30 is installed on the ceiling with the lower surface thereof matching the surface of the ceiling plate. This surface corresponds to the opening of the housing 1. Intake into the housing 1 is performed via a design panel having a double lattice structure (not shown).

  The blower outlet 5 is provided as an opening on any one side surface adjacent to the bottom surface on which the suction port 4 is provided.

  The guide member 12 is provided above the center of the two adjacent side surfaces 1a adjacent to the one side surface where the air outlet 5 is provided, that is, on the top surface side. The guide member 12 is used to fix the adapter 3 to the housing 1 and will be described in detail later.

  The suction port 4 and the blowout port 5 are communicated with each other inside the housing 1, and the communicated air path constitutes the exhaust air path 6.

  The blower unit 2 is disposed in the exhaust air passage 6 and guides air from the suction port 4 to the blower port 5. The blower unit 2 includes a casing 7, a motor 8, and a fan 9.

  The casing 7 forms the outline of the air blowing part 2 and is made of resin. The casing 7 has a substantially cylindrical shape, and an opening for sucking air is provided on the bottom surface located on the lower surface, and an opening for discharging air is provided on the side surface. The casing 7 has a bottom opening close to the suction port 4 and a side opening connected to the air outlet 5. The casing 7 has a substantially cylindrical shape and a cross section parallel to the bottom surface has a circular scroll shape. The casing 7 includes an orifice 10 in the opening on the bottom surface.

  The orifice 10 is a resin part having a cylindrical shape, having a central portion opened, and the opening connected to the bottom opening. The orifice 10 is located upstream in the air flow direction of the blower unit 2 and is attached to the casing 7 by a fixing means such as a screw. The orifice 10 may be integrated with the casing 7.

  The motor 8 is disposed on the top surface side in the internal space of the casing 7 and is attached by a fixing means such as a screw near the center of the circular scroll shape. The motor 8 includes a rotating shaft that protrudes from the top surface of the casing 7 toward the bottom surface. The motor 8 rotates the rotating shaft by supplying power. Electric power is supplied to the motor 8 through an electrical board (not shown).

  The fan 9 is, for example, a sirocco fan fixed to the rotating shaft. When the motor 8 is activated, the fan 9 is activated by the rotation of the rotation shaft, and the air is moved. That is, the air is guided from the suction port 4 to the blowout port 5 by driving the blower 2.

  The electrical board is stored in an electrical board case 11 provided in the housing 1, and is attached to the outer shell of the casing 7 by fixing means such as screws (not shown).

  The electrical board case 11 includes an electrical board base 11a made of flame retardant resin and an electrical board cover 11b made of flame retardant resin. The electrical board is attached to the electrical board base 11a by fixing means such as screws. The electrical board cover 11b is attached to the electrical board base 11a by fixing means such as screws.

  The adapter 3 is provided on one side of the housing 1 and on the downstream side of the air outlet 5. The adapter 3 includes an adapter plate 19 and a duct connection portion 20.

  The adapter plate 19 is provided as a flat plate made of, for example, resin having substantially the same size as one side surface of the housing 1. The adapter plate 19 is provided on the downstream side of one side surface of the housing 1 where the air outlet 5 is provided. The adapter plate 19 includes guide portions 3a on both side surfaces.

  As shown in a simplified top view 40 in FIG. 1, the guide portion 3 a is configured, for example, by bending the side surface of the adapter plate 19 at two locations. The guide portion 3a is extended in parallel to the adjacent side surface 1a in the direction of the adjacent side surface 1a from both sides that are the ends of the flat surface of the adapter plate 19, and further in the direction of the adjacent side surface 1a from the extended tip. It extends perpendicularly to the adjacent side surface 1a. That is, the guide portion 3a has a concave shape 41 when the adapter 3 is viewed from above (as viewed from above in FIG. 1). The guide portion 3a guides the housing 1 to the adapter 3 by bringing the guide member 12 provided on the adjacent side surface 1a into contact with the inner peripheral wall of the concave shape 41 and guiding it in the vertical direction. In other words, the housing 1 guides the adapter 3 in the vertical direction by the sliding structure of the guide portion 3 a and the guide member 12.

  The duct connecting portion 20 is erected from the adapter plate 19 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 20 is connected to the air outlet 5 through the internal space, and guides the exhaust gas blown out from the inside of the housing 1. For example, the duct connection unit 20 is connected to an indoor side end of a duct that communicates indoors and outdoors, so that the exhaust of the ventilation device 30 can be discharged to the outdoors.

  Next, the detailed structure of the guide member 12 will be described with reference to FIGS. 3 and 4. 3 is a side view of the guide member 12, and FIG. 4 is a rear perspective view of the guide member 12.

  The guide member 12 is integrally formed of a resin having elasticity. The guide member 12 has a prismatic shape in which a trapezoidal front surface 12a and a trapezoidal rear surface 12b are overlapped. That is, it has a trapezoidal shape when viewed from above and from below. The trapezoidal shape is a quadrilateral having at least a pair of opposite sides parallel to each other. However, in the present embodiment, it is not necessary to be a strict quadrilateral, and the corner may have a certain roundness. The guide member 12 has a bulging shape 12c on the front surface 12a and an arch shape 15 on the back surface 12b. Moreover, the guide member 12 is provided with the protrusion part 13 in the back surface 12b.

  In the side view from the long side in the prismatic shape of the guide member 12, the bulging shape 12c swells in the direction opposite to the back surface 12b by a height of 12d from the surface 12a at the center compared to both ends on the surface 12a side. It is the shape that was put out. The bulging shape 12c gradually increases in height from both ends to the center, that is, has a smooth mountain shape.

  The arch shape 15 is a shape in which the central portion is recessed from the back surface 12b to the front surface 12a side by a height 15a as compared to both end portions on the back surface 12b side in a side view from the long side in the prismatic shape of the guide member 12. . The arch shape 15 has a dent gradually increasing from both ends to the center, that is, a smooth dent.

  Three or more protrusions 13 are provided in the longitudinal direction of the back surface 12b. In the present embodiment, three protrusions 13 are provided in the longitudinal direction of the trapezoidal shape, and a protrusion 13a, a protrusion 13b, and a protrusion 13c are provided in this order from the end (left end in FIG. 3). The protrusions 13 are configured so that the intervals between the adjacent protrusions 13 are not uniform. Here, non-uniform means that the interval (distance) is different. Specifically, in FIG. 3, the distance X between the protrusion 13a and the protrusion 13b is shorter than the distance Y between the protrusion 13b and the protrusion 13c. By making the intervals non-uniform in this way, it is possible to fit only in a predetermined direction into an engagement hole 1b described later provided in the adjacent side surface 1a of the guide member 12. The protruding portion 13 b has a throttle shape and is arranged at the top of the arch shape 15. The term “diaphragm shape” refers to a shape in which the tip portion of the shaft in the rod shape is configured to be larger than the shaft, in other words, the tip portion is large and is squeezed from the tip portion toward the axial direction. The protrusion part 13a and the protrusion part 13c do not have an aperture shape.

  The projecting portion 13b having an aperture shape includes a column portion 14a, a tip portion 14b, and a cut portion 14c. Note that the protrusion having the aperture shape is provided on at least one of the three or more protrusions.

  The support column 14a is a cylinder that is connected to the back surface 12b and stands up in a direction away from the back surface 12b. The column portion 14a has a diameter substantially the same as the diameter of the engagement hole 1b.

  The tip portion 14b has a truncated cone shape having a bottom surface diameter larger than the diameter of the circle in the column portion 14a at the tip of the column portion 14a. The bottom surface diameter of the tip portion 14b at the truncated cone is larger than the diameter of the engagement hole 1b, and the top surface diameter of the truncated cone is smaller than the diameter of the engagement hole 1b.

  The cut portion 14c is provided as a cut from the tip of the tip portion 14b toward the support column. The cut portion 14c can temporarily incline the resin-formed protruding portion 13b from the radial direction toward the center by equally dividing the protruding portion 13b in the radial direction. By inclining the projecting portion 13b in the center direction, it becomes possible to make the bottom surface diameter of the truncated cone substantially equal to the diameter of the engagement hole 1b or less.

  The protruding portion 13a and the protruding portion 13c, which do not have the aperture shape, include a column portion 16a and a small protruding portion 16b.

  The support column 16a is a cylinder that is connected to the back surface 12b and stands up in a direction away from the back surface 12b. The column portion 16a has a diameter substantially the same as the diameter of the engagement hole 1b.

  The small protrusion 16b is a protrusion that extends in the vertical direction from the standing direction of the column 16a from the vicinity of the tip of the column 16a. The small protruding portion 16b is positioned outside the outer periphery of the engaging hole 1b when the column portion 16a is inserted into the engaging hole 1b, that is, penetrated, and functions as a stopper in the removal direction.

  The detailed structure of the guide member 12 has been described above.

  Next, attachment of the guide member 12 and connection between the adapter 3 and the housing 1 will be described with reference to FIGS. 1, 5, and 6. 5 is a side view of the housing showing the state where the guide member 12 is removed, and FIG. 6 is a side view of the housing showing the state where the guide member 12 is attached.

  As shown in FIG. 5, the housing 1 includes an engagement hole 1 b on the two adjacent side surfaces 1 a above the center, that is, on the top surface side.

  In the present embodiment, three engagement holes 1b are provided at positions corresponding to the number of protrusions 13. In addition, the engagement holes 1 b are configured in a non-uniform manner, like the protrusions 13, with the intervals between the adjacent engagement holes 1 b corresponding to the intervals between the protrusions 13. With this configuration, the protrusion 13 is fitted in the engagement hole 1b so that the long side (lower base) of the trapezoidal shape constituting the guide member 12, as shown in FIG. This is located in parallel with the side edge, that is, the side edge on which the adapter 3 is arranged. In other words, the engagement hole 1 b can be arranged with the long side of the back surface 12 b coinciding with the end side of the adapter 3, but the short side (upper bottom) of the back surface 12 b is arranged with the end side of the adapter 3. It becomes impossible. With this special shape, there is no worry that the mounting direction of the guide member 12 exhibiting the effects described later is wrong.

  When the protrusion 13 is fitted into the engagement hole 1b, the both ends of the long side of the guide member 12 are first brought into close contact with the adjacent side surface 1a by the arch shape 15 described above. Thereafter, the tip end portion 14b of the protruding portion 13b provided in the central portion is temporarily inclined from the radial direction toward the center, thereby penetrating the engagement hole 1b, and the inclination is eliminated inside the housing 1. Thereby, the base in the truncated cone shape of the tip end portion 14b is locked to the adjacent side surface 1a from the inside of the housing 1, and the protruding portion 13b is fixed to the engaging hole 1b. At this time, the protruding portion 13a and the protruding portion 13c also penetrate the engaging hole 1b, and the small protruding portion 16b is locked to the adjacent side surface 1a from the inside of the housing 1. Thereby, the guide member 12 is fixed to the adjacent side surface 1a so as not to rotate. And by the arch shape 15, it is always urged | biased and closely_contact | adhered to the long side both ends of the guide member 12 in the adjacent side surface 1a direction. With this close contact, when the guide member 12 is inserted along the guide portion 3a of the adapter 3, strictly speaking, the concave shape 41, the guide member 12 can be smoothly inserted without being caught and workability can be improved.

  Further, the guide member 12 has a trapezoidal shape, and the long side is positioned in parallel with the end on the surface side where the adapter 3 is disposed. That is, the guide member 12 has a tapered shape 31 toward the upper side. Thereby, when inserting the guide member 12 in the guide part 3a of the adapter 3, it can be smoothly inserted into the guide part 3a and workability can be improved.

  Further, since the guide member 12 has a trapezoidal shape, when the guide member 12 is inserted into the guide portion 3a, the adapter 3 is drawn toward the housing 1 by the tapered shape 31. That is, since the degree of adhesion between the adapter 3 and the housing 1 is increased, airtightness can be ensured even when a duct load is applied.

  The guide member 12 has a bulging shape 12c. That is, when the guide member 12 is inserted into the guide portion 3 a, the adapter 3 is pulled in the left-right direction when viewed from the front of the air outlet 5. Thereby, the wobbling of the adapter 3 and the housing | casing 1 in the left-right direction does not generate | occur | produce, the contact | adherence degree of the adapter 3 and the housing | casing 1 increases, and airtightness can be improved.

(Embodiment 2)
Next, the detailed structure of the guide member 28 according to the second embodiment will be described with reference to FIG. FIG. 7 is a rear perspective view of the guide member 28 according to the second embodiment.

  The guide member 28 is a modification of the guide member 12 shown in the first embodiment. The difference between the guide member 28 and the guide member 12 is the configuration of the protruding portion, and the configuration of the other portions is the same.

  Three or more protrusions 29 are provided in the longitudinal direction of the back surface 12b. In the present embodiment, three protrusions 29 are provided in the longitudinal direction of the trapezoidal shape, and a protrusion 29a, a protrusion 29b, and a protrusion 29c are provided in order from the end (left end in FIG. 7). The protrusions 29 are configured so that the interval between the adjacent protrusions 29 is not uniform. The protruding portion 29a and the protruding portion 29c include a column portion 21 and a small protruding portion 22, respectively.

  The support column 21 is a cylinder that is connected to the back surface 12b and stands up in a direction away from the back surface 12b. The support column 21 has a diameter substantially the same as the diameter of the engagement hole 1b.

  The small protrusion 22 extends in the direction perpendicular to the standing direction of the column 21 (the paper surface direction in FIG. 7) from the vicinity of the tip of the column 21. Further, the protrusions 29a provided at both ends in the longitudinal direction of the guide member 28 (left and right direction in FIG. 7) and the small protrusions 22 of the protrusions 29c are trapezoidal in the same direction, that is, in this case, the trapezoidal short side 23. Stands up in the outer circumferential direction. And the small protrusion part 22 which stood up in the outer peripheral direction protrudes in the outer peripheral direction rather than the short side 23. In addition, the small protrusion part 24 of the protrusion part 29b pinched | interposed into the protrusion part 29a of the both ends and the protrusion part 29c stands in the opposite direction to the small protrusion part 22. FIG. Specifically, it rises in the direction of the long side 25 in the trapezoidal shape (the downward direction in FIG. 7).

  The protruding portion 29 b includes an inclined surface 26, in which the short side 23 side of the support column 21 is inclined in the long side 25 side, that is, in the direction opposite to the short side 23, from the back surface toward the distal end direction.

  The detailed structure of the guide member 28 has been described above.

  When connecting the guide member 28 to the adjacent side surface 1a shown in FIG. 5, first, the tip of the small protrusion 22 is inserted into the engagement hole 1b. At this time, the back surface 12b of the guide member 28 forms an acute angle rather than parallel to the adjacent side surface 1a. From this state, when the back surface 12b is approached so as to be parallel to the adjacent side surface 1a, the projecting portions 29a and the column portions 21 of the projecting portions 29c are inserted into the engaging holes 1b. At this time, since the protruding portion 29b has the inclined surface 26, the leading end portion on the short side 23 side of the protruding portion 29b does not contact the adjacent side surface 1a, that is, the column portion 21 of the protruding portion 29b does not bend, and the protruding portion 29b. Is inserted into the engagement hole 1b.

  When the tip of the protrusion 29b is inserted into the engagement hole 1b, the small protrusion 24 of the protrusion 29b collides with the inner peripheral surface of the engagement hole 1b, and the support column 21 is bent toward the short side 23. In this state, the small protrusion 24 passes through the engagement hole 1b. When the small protrusion 24 passes through the engagement hole 1b, the support column 21 recovers from the bent state, and in this state, the protrusion 29b is completely inserted into the engagement hole 1b.

  Since the small protrusion 22 and the small protrusion 24 are erected in opposite directions, the small protrusion 22 and the small protrusion 24 are detented after the protrusion 29 is completely inserted into the engagement hole 1b. And the guide member 28 can be firmly fixed by preventing the guide member 28 from coming off from the engagement hole 1b.

  The ventilator according to the present invention is useful as a ventilator in which an adapter and a housing are independently configured, so that the workability can be improved and the airtightness can be enhanced.

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a Adjacent side surface 1b Engagement hole 2 Air blower part 3 Adapter 3a Guide part 4 Suction port 5 Air outlet 6 Exhaust air path 7 Casing 8 Motor 9 Fan 10 Orifice 11 Electrical board case 11a Electrical board base 11b Electrical board cover 12, 28 guide member 12a front surface 12b back surface 12c bulging shape 12d height 13, 13a, 13b, 13c projecting portion 14a strut portion 14b tip portion 14c notch portion 15 arch shape 15a height 16a strut portion 16b small protrusion portion 19 adapter plate 20 duct Connecting part 21 Supporting part 22, 24 Small protrusion part 23 Short side 25 Long side 26 Inclined surface 29, 29a, 29b, 29c Protruding part 30 Ventilator 31 Tapered shape 40 Simplified top view 41 Concave shape

Claims (11)

A housing having a suction port on the bottom surface, an air outlet on one side surface, and a guide member on two adjacent side surfaces adjacent to the one side surface;
A blower that guides air from the inlet to the outlet;
An adapter that is guided by the guide member by sliding from the top surface side of the housing toward the bottom surface side and is fixed to the housing so as to face the one side surface,
The adapter is
A guide portion having a concave shape and guided by the guide member;
The guide member is
A ventilator for guiding the adapter by contacting an inner peripheral wall of the recess in the concave shape. The guide member is
It has a prismatic structure in which a trapezoidal back surface and the trapezoidal surface are superimposed,
The ventilator according to claim 1, wherein a long side of the back surface is arranged so as to coincide with an end side of the adjacent side surface on the adapter side. The guide member is
Three or more protrusions are provided on the back surface,
The adjacent side surface is
An engagement hole corresponding to the protrusion,
The engagement hole is
The long side of the back surface can be arranged to coincide with the end side on the adapter side of the adjacent side surface, and the short side of the back surface can be arranged to coincide with the end side of the adjacent side surface on the adapter side, The ventilation apparatus according to claim 2. The guide member is
The arrangement interval of the three or more protrusions is configured to be non-uniform,
The engagement hole is
The ventilation device according to claim 3, wherein the protrusion is provided at a position corresponding to the protrusion. The guide member is
The ventilator according to any one of claims 1 to 3, wherein the surface has a bulging shape in which a central portion bulges from the surface as compared to both ends of the trapezoidal shape. The protrusion is
A column portion that connects to the back surface and stands up in a direction away from the back surface;
A tip portion having a diameter larger than the diameter of the support post at the tip of the support post;
A slit shape having a notch in the direction of the support column from the tip of the tip,
The engagement hole is
The ventilator according to any one of claims 3 to 5, wherein a diameter substantially coincides with a diameter of the support portion. The aperture shape is
Provided in at least one of the protrusions;
In the protruding portion not provided with the aperture shape,
A column portion that connects to the back surface and stands up in a direction away from the back surface;
A small protrusion extending in the vertical direction from the standing direction of the support column from the vicinity of the tip of the support column,
The small protrusion is
The ventilation device according to claim 6, wherein the ventilation device is located outside the outer periphery of the engagement hole in a state of passing through the engagement hole. The guide member is
The ventilator according to any one of claims 2 to 7, wherein the back surface has an arch shape in which a central portion is recessed from the back surface to the front surface side as compared to both ends of the trapezoidal shape. The protrusion is
The ventilation device according to claim 8, wherein the ventilation device is arranged at a top of the back surface of the arch shape. The protrusion is
A column portion that connects to the back surface and stands up in a direction away from the back surface;
A small protrusion extending in the vertical direction from the standing direction of the support column from the vicinity of the tip of the support column,
The small protrusions of the protrusions provided at both ends in the longitudinal direction of the guide member are
Standing up in the same direction,
The small protrusions of at least one protrusion sandwiched between the protrusions on both ends are
The ventilator according to any one of claims 3 to 5, wherein the ventilator is erected in a direction opposite to the small protrusions erected in the same direction. The small protrusions standing in the same direction are
It protrudes in the outer peripheral direction from the trapezoidal short side,
At least one protrusion sandwiched between the protrusions on both ends is
The ventilation device according to claim 10, wherein the short side of the support column is inclined in a direction opposite to the short side as it extends from the back surface toward the tip.

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