JP6948532B2 - Air supply fan - Google Patents

Description

The present invention relates to an air supply fan.

Conventionally, it has been known that a filter can be easily attached / detached during maintenance of an air supply fan (blower). (Patent Document 1).

Hereinafter, the air supply fan will be described with reference to the figure.

As shown in FIGS. 8 and 9, the air supply fan has a first opening 102 and a second opening 103 located on one surface facing a direction orthogonal to the thickness direction of the housing 101, and is located inside the housing 101. , It has an air flow path 104 that communicates the first opening 102 and the second opening 103, and has a blower 105 that is located in the air flow path 104 and sucks air through the first opening 102 and blows it out from the second opening 103. The block-shaped first filter 106 located downstream of the first opening 102 in the air flow path 104. Further, an airflow guide 107 that is movably or detachably attached to the front of one surface of the housing and guides the direction of the flow of air blown out from the second opening 103 is provided, and the airflow guide 107 is the second filter 108. It has a protruding portion 109 for preventing the airflow from coming off, and the filter can be attached and detached by removing the airflow guide 107.

JP-A-2019-18204

By the way, the conventional air supply fan is used for circulating air in the room. When this is used for suction from outdoor air, air supply efficiency can be improved by providing an opening on the side so that air circulation does not occur, but it is provided at a predetermined position in the room and connected to the outside. A duct connection is required between the opening and the side of the air supply fan. However, the distance of the duct connection should be short in terms of its design and performance, and considering this, it is necessary to reduce the distance between the side surface and the opening, so for example, a model with an opening on the left side and a model with an opening on the right side Two types of lineup were required, one with a model with an opening on the side.

Therefore, the present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an air supply fan that takes in outdoor air and can handle air supply from either the left or right side. ..

Then, in order to achieve this object, the air supply fan according to the present invention can be arranged in a forward arrangement in which a predetermined surface is arranged vertically above and a reverse arrangement in which the predetermined surface is arranged vertically below. A housing, an air supply opening for supplying air from the outside of the housing, a blowout opening for blowing out air inside the housing, a fan unit for guiding air from the air supply opening to the blowout opening, and a ventilation opening. A louver that guides the wind direction of the air blown from the blowout opening on the downstream side of the blowout opening, and the housing and the louver corresponding to both the forward arrangement and the reverse direction arrangement. The louver locking structure for locking and the reverse mounting prevention structure for preventing the mounting of the upper side of the louver vertically downward regardless of the forward arrangement and the reverse arrangement of the housing are provided, and the reverse mounting is provided. The prevention structure is such that the sliding portion that slides vertically downward due to its own weight and the sliding portion located vertically downward in contact with the upper side of the louver are in contact with each other to lock the housing and the louver. It is provided with a locking inhibitory portion that inhibits the above-mentioned structure, thereby achieving the intended purpose.

According to the present invention, by making the housing compatible with both upper and lower mounting, it is possible to provide an air supply fan capable of supplying air from either the left or right side.

Perspective sectional view of the air supply fan according to the present invention Schematic configuration diagram showing the detachable air supply fan according to the present invention. Exploded view showing the fan unit Exploded view showing the louver part The figure which shows the structure and arrangement of the reverse mounting prevention structure 50 Perspective and side view of the reverse mounting prevention structure at the reverse mounting position Schematic configuration diagram showing the ceiling installation state Structural drawing of the prior art filter dust remover Structural drawing of the prior art filter dust remover

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 1)
First, a schematic configuration of the air supply fan 90 according to the present invention will be described with reference to FIGS. 1 to 4.

The air supply fan 90 is installed, for example, on the ceiling of a room in a building.

As shown in FIGS. 1 and 2, the air supply fan 90 includes a housing 1, a filter unit 2, a fan unit 3, and a louver unit 4.

The housing 1 is hollow and has a flat rectangular plate shape. The housing 1 includes a side surface 60, a reverse side surface 61 facing the side surface 60, a top surface 62 adjacent to the side surface 60 and the reverse side surface 61, a bottom surface 63 facing the top surface 62, and the side surface 60 and the top surface 62. A back surface 64 adjacent to the bottom surface 63 and a front surface 65 facing the back surface 64 are provided. Further, the housing 1 is provided with a rod-shaped fixing portion 29 extending from the top surface 62 to the bottom surface 63 on the opposite side surface 61. Here, the arrangement of the air supply fan 90 with the top surface 62 facing vertically upward is referred to as a forward arrangement. Further, the arrangement of the air supply fan 90 with the top surface 62 facing vertically downward is referred to as an arrangement in the reverse direction.

The front surface 65 is a rectangular opening, and the direction connecting the side surface 60 and the opposite side surface 61 is the longitudinal direction.

The side surface 60, the reverse side surface 61, the top surface 62, the bottom surface 63, and the back surface 64 each have a rectangular shape. In the side surface 60 and the reverse side surface 61, the direction connecting the front surface 65 and the back surface 64 is the longitudinal direction. The side surface 60 is provided with an air supply opening 70. Further, the side surface 60 and the opposite side surface 61 are provided with a hanging portion 28.

The hanging portion 28 projects from the side surface 60 and the opposite side surface 61 toward the outside of the housing 1. The hanging portion 28 can be attached by suspending the housing 1 from the ceiling by being locked with a wire or the like connected to the ceiling. The hanging portion 28 can be attached with the housing 1 facing the ceiling on both the top surface 62 and the bottom surface 63. That is, by projecting from the side surface 60 and the reverse side surface 61 toward the outside of the housing 1, both the forward arrangement and the reverse arrangement can be supported.

The filter unit 2 includes a filter 5, a filter holding unit 6, and a filter frame 7.

The filter 5 has, for example, a rectangular shape, and separates and accumulates dust contained in the air passing through the filter 5. The top surface of the filter 5 faces the top surface 62 of the housing 1 and the bottom surface of the filter 5 faces the bottom surface 63 of the housing 1. The filter 5 includes an upstream surface located on the upstream side and a downstream surface located on the downstream side when the flow of wind passing through the filter 5 is used as a reference while being arranged in the air supply fan. .. The filter 5 includes a grip portion 8.

The grip portion 8 is provided on a side surface of the filter 5 facing the front surface 65 and a side surface facing the back surface 64. The grip portion 8 is, for example, a piece of cloth connected to the filter 5, and is used when the filter 5 is pulled out from the housing 1.

The filter holding portion 6 is a plate-shaped rectangular member having the same size as the top surface and the bottom surface of the filter 5. The filter holding portions 6 are installed at two locations, a top surface 62 inside the housing 1 and a bottom surface 63 inside the housing 1. Each of the two filter holding portions 6 has a plane parallel to the top surface 62, and two rails 9 are provided on the plane at the same interval as the thickness from the upstream surface to the downstream surface of the filter 5. Be prepared.

The rail 9 limits the movement of the filter 5 inside the housing 1 on the top surface and the bottom surface of the filter 5 in the direction connecting the back surface 64 and the front surface 65.

The filter frame 7 is parallel to the front surface 65 and has a plate shape. The filter frame 7 has an insertion port 10 as an opening for inserting the filter 5 in the center, and includes a filter cover 11 that covers the insertion port 10.

The filter cover 11 is parallel to the front surface 65 and has a plate shape. By installing the filter cover 11 when the air supply fan is operating, it is possible to prevent the outflow of air from the gap. Further, the filter cover 11 suppresses the movement of the filter 5 in the direction perpendicular to the front surface 65.

As shown in FIG. 3, the fan unit 3 includes a fan casing 12, a motor fixing plate 13, a motor 14, an impeller 15, a front fixing plate 30, and a control unit 16.

The fan casing 12 has a hollow flat plate shape having a predetermined thickness, and is provided with a spiral scroll having a substantially circular shape when viewed from the side and gradually increasing in radius from the center toward the outer circumference. The fan casing 12 includes a suction opening 71 and a blowout opening 72.

The suction opening 71 is provided on the side surface of the scroll and faces the top surface 62 when the fan unit 3 is fixed inside the housing 1.

The blowout opening 72 is provided as an opening at the outer peripheral end of the scroll, and faces the front surface 65 when the fan unit 3 is fixed inside the housing 1.

The motor fixing plate 13 is installed on the bottom surface 63 side of the fan casing 12, that is, on the facing surface of the suction opening 71, as a base for arranging the motor 14 at a predetermined position.

The motor 14 includes a rotating shaft 17 that rotates by energization, and the rotating shaft 17 projects from the bottom surface 63 side of the fan casing 12 toward the internal space in the direction of the top surface 62. The motor 14 is installed on the bottom surface 63 side of the motor fixing plate 13.

The impeller 15 is connected to the rotating shaft 17 in the internal space of the fan casing 12, and blows air by rotating the rotating shaft 17. The impeller 15 is preferably a sirocco fan having low noise and high static pressure.

The front fixing plate 30 has an L-shape when viewed from the top, and one side surface of the L-shape is provided in the fan unit 3 at a position facing the front 65 of the housing 1. Further, the other side surface adjacent to one side surface in the L shape is arranged parallel to the opposite side surface 61 of the housing 1. The front fixing plate 30 is provided with an opening on one side surface, and the blowout opening 72 of the fan casing 12 described above is connected to the front fixing plate 30. One side surface of the L-shape is arranged parallel to the filter frame 7 and the filter cover 11, and these surfaces form the same surface 66.

In other words, the same surface 66 is composed of a filter frame 7, a filter cover 11, and one side surface in an L shape. Strictly speaking, the same surface 66 shown in the drawing has irregularities, but even if these irregularities exist, it is regarded as one flat surface for the process of attaching and detaching the filter unit 2 and the fan unit 3. Since it can be regarded as the same plane, it is defined as the same plane. In other words, the same surface 66 does not have to be an accurate surface (plane), and may be a surface that is the same as the working direction.

The control unit 16 has a plate shape and houses a control board for controlling the motor 14 inside. The control unit 16 is fixed to the other side surface of the fan casing 12 and controls the rotation of the rotating shaft 17. The control unit 16 can be attached to and detached from the housing 1 together with the fan unit 3. However, the control unit 16 may be provided as a separate body from the fan unit 3, that is, the fan unit 3 and the control unit 16 may be individually and independently detachable from the housing 1.

As shown in FIG. 4, the louver portion 4 includes an adjuster 19 and a louver 20. However, in the present embodiment, the adjuster 19 belongs to the housing 1 by definition.

The adjuster 19 includes an outer peripheral wall 21 and a contact surface 22.

The outer peripheral wall 21 has a hollow rectangular parallelepiped shape. The outer peripheral wall 21 is attached to the housing 1 through the front surface 65 of the housing 1, and the outer peripheral surface of the outer peripheral wall 21 is inside the wall surface surrounded by the side surface 60, the opposite side surface 61, the top surface 62, and the bottom surface 63. Touch. The outer peripheral wall 21 can slide the inside of the housing 1 in a direction perpendicular to the front surface 65. The outer peripheral wall 21 has a surface in contact with the side surface 60 fixed to the side surface 60 and a surface in contact with the reverse side surface 61 to the reverse side surface 61 with screws, and can be removed from the housing 1 by removing the screws. That is, the adjuster 19 can be attached to and detached from the housing 1. Further, the fixing positions of the outer peripheral wall 21 and the housing 1 by screws are variable in the direction perpendicular to the front surface 65. The adjuster 19 may be oriented up and down when attached to the housing 1 through the front surface 65. The detachable structure in which the position of the adjuster 19 and the housing 1 shown above is variable and slidable is referred to as a louver mounting structure. The louver mounting structure makes it possible to adjust the position of the air supply fan 90 after installation, which has the effect of reducing the difficulty of construction. The adjuster 19 may be integrated with the housing 1 and the louver mounting structure may be removed. In that case, there is an advantage that the component configuration of the air supply fan 90 is simplified.

The contact surface 22 is provided at the downstream end of the outer peripheral wall 21 as a rib that is perpendicular to the direction of the air flowing in the outer peripheral wall 21 and rises toward the outside of the outer peripheral wall 21. The contact surface 22 comes into contact with the louver 20 by locking the louver 20 and the housing 1 (adjuster 19) using the louver locking structure 40. The louver locking structure 40 will be described later.

The louver 20 includes a support wall 27, an upper surface 23, a lower surface 24, a right surface 25, a left surface 26, and a ventilation opening 73.

The support wall 27 is a frame body having a rectangular shape, rises parallel to the air flowing from the adjuster 19, and is fixed to the contact surface 22.

One side of the downstream end of the upper surface 23 is connected to the upper side of the support wall 27 (frame body). One side of the upstream end of the upper surface 23 extends in the inner peripheral direction of the frame body, and is arranged so as to be inclined toward the upstream side of the frame body, that is, the adjuster 19 direction.

One side of the downstream end of the lower surface 24 is connected to the lower side of the frame. One side of the upstream end of the lower surface 24 extends in the inner peripheral direction of the frame body, and is arranged so as to be inclined to the upstream side of the frame body. However, one side of the upstream end of the lower surface 24 is located on the downstream side of one side of the upstream end of the upper surface 23.

One side of the downstream end of the right side 25 and the left side 26 is connected to the side side of the frame, and the right side 25 and the left side 26 are extended so as to be inclined in the inner peripheral direction of the frame as the side side toward the upstream direction. The right surface 25 and the left surface 26 are connected to the side sides of the upper surface 23 and the lower surface 24. Here, the side side is a side connected to the end of one side of the upstream end and the end of one side of the downstream end on the upper surface 23 and the lower surface 24. The expressions of the upper surface, the lower surface, the right surface, and the left surface are based on the positions shown with reference to the display of FIG. 4, and are not based on the actual arrangement of the louvers 20. Further, the adjuster 19 may be oriented up and down when it is attached to the housing 1 as described above.

The ventilation opening 73 is an opening formed by being surrounded by one side of the upstream end of the upper surface 23, one side of the upstream end of the lower surface 24, the right surface 25, and the left surface 26, and has a rectangular shape. The ventilation opening 73 has a longitudinal direction in a direction parallel to the top surface 62, in other words, a direction connecting the right surface 25 and the left surface 26.

The louver 20 guides the wind direction of air passing through the ventilation opening 73 by the shape of the louver formed by the upper surface 23, the lower surface 24, the right surface 25, and the left surface 26. That is, according to the above configuration, the air passing through the ventilation opening 73 is guided along the downstream surface of the upper surface 23 in the direction of one side of the downstream end of the upper surface 23, upward as shown in FIG. .. Further, the air passing through the ventilation opening 73 is guided by the right side surface 25 and the left side surface 26, and is guided in a direction extending from the ventilation opening 73 to the left and right. Further, the louver 20 is arranged parallel to the same surface 66. Here, the surface of the louver 20 refers to the opening surface of the internal space formed by the support wall 27.

The louver locking structure 40 includes a housing-side locking tool 42 and a louver-side locking tool 41.

The housing-side locking tool 42 is attached to the inner surface of the outer peripheral wall 21 of the adjuster 19.

The louver-side locking tool 41 is arranged at a position corresponding to the housing-side locking tool 42 toward the upstream side from the side side of the louver 20, that is, toward the adjuster 19.

The louver locking structure 40 can be fixed to each other by engaging the louver-side locking tool 41 and the housing-side locking tool 42. That is, the louver locking structure 40 allows the louver 20 to be detachably attached to the adjuster 19. Further, the louver locking structure 40 shown in FIG. 4 is arranged in pairs on the left and right on a surface that bisects the height direction of the louver 20, that is, the direction from the bottom surface 63 to the top surface 62. As a result, the housing-side locking tool 42 and the louver-side locking tool 41 can be locked regardless of the vertical orientation of the adjuster 19 and the housing 1. In other words, with respect to the louver locking structure 40, the mounting direction of the housing 1 corresponds to both the forward arrangement and the reverse arrangement, and the upper surface of the louver 20 is located vertically above the louver, or the louver. It can be attached and detached with the upper surface of 20 located vertically below. Here, the arrangement and quantity of the louver locking structure 40 shown in FIG. 4 is an example, and for example, the arrangement of the louver locking structure 40 is plane-symmetrical with respect to the plane that bisects the louver 20 in the height direction. The same effect can be obtained if the position is set to.

Further, the louver 20 includes the reverse mounting prevention structure 50 shown in FIGS. 5 and 6. FIG. 5A is a perspective view showing the configuration of the reverse mounting prevention structure 50, and FIG. 5B is a layout view of the reverse mounting prevention structure 50 when viewed from the back surface of the louver. FIG. 6A is a perspective view of the reverse mounting prevention structure 50 at the reverse mounting position, and FIG. 6B is an exploded view of the reverse mounting prevention structure 50 at the reverse mounting position as viewed from the side.

The reverse mounting prevention structure 50 includes a slide portion 51, a holding base 57, and a holding frame 55.

The slide portion 51 includes a slide main body 53, a slide concave portion 52, a slide end surface 59, and a slide convex portion 54.

The slide body 53 has a rectangular parallelepiped shape. Although the slide main body 53 has a rectangular parallelepiped shape, there are some parts that have been partially cut for convenience of design. Therefore, instead of a strict rectangular parallelepiped shape, a substantially rectangular parallelepiped shape may be used.

The slide recess 52 is a portion in which both side surfaces of the slide main body 53 are cut out in a rectangular shape toward the center of the slide main body 53 in the vertical vertical direction with the louver portion 4 installed.

The slide end surface 59 shows the upper surface of the slide main body 53 at the normal mounting position and the lower surface of the slide main body 53 at the reverse mounting position. The regular mounting position and the reverse mounting position will be described later.

The slide convex portion 54 has a protruding shape that rises vertically from the slide end surface 59.

The holding base 57 is provided on the upstream side (back side) of the upper surface 23 of the louver portion 4, and is provided on the upper surface 23 in order to arrange the holding frame 55 in the vertical direction with respect to the upper surface 23 having an inclination with respect to the vertical direction. It is the foundation for correcting the inclination.

The holding frame 55 is a guide having two rectangular parallelepiped shapes that rise vertically from the holding base 57, and has protrusion-shaped holding end portions 56 on opposite surfaces in the two rectangular parallelepiped shapes. At the position where the slide portion 51 is shown in FIG. 5A, that is, at the normal mounting position where the slide end surface 59 is farthest from the holding end portion 56, in other words, at the regular mounting position where the slide portion 51 is in contact with the holding base 57, the holding end portion The tip (upper end) of the 56 is located above the tip (upper end) of the holding frame 55, that is, the tip (upper end) of the slide convex portion 54.

The slide portion 51 is inserted between the two guides constituting the holding frame 55, and the holding frame 55 fits into the slide recess 52, so that the horizontal movement of the slide portion 51 is restricted and the slide portion 51 is moved in the vertical direction. Can only be moved. Further, as shown in FIG. 6A, the slide portion 51 slides vertically downward along the guide due to its own weight when the vertical direction is reversed, and the slide end surface 59 and the holding end portion 56 come into contact with each other. Stop. That is, the slide portion 51 is slidably held between the holding end portion 56 and the holding base 57 by its own weight. The position where the slide end surface 59 and the holding end 56 come into contact with each other and stop is referred to as a reverse mounting position of the slide 51. In the reverse mounting position, the tip (lower end) of the slide convex portion 54 is located below the tip (lower end) of the holding frame 55.

FIG. 6 shows a functional example of the reverse mounting prevention structure 50 at the reverse mounting position. As described above, in the reverse mounting position, the slide portion 51 slides vertically downward due to its own weight, and the slide end surface 59 and the holding end portion 56 come into contact with each other to stop. At that time, the slide convex portion 54 is in a state of protruding from the height of the holding frame 55. Then, when the louver 20 is attached to the adjuster 19 at the reverse attachment position, the slide convex portion 54 interferes with the vertically downward contact surface 22 that functions as the locking obstruction portion 58. At the regular mounting position, the slide portion 51 comes into contact with the holding base 57 and stops, and the slide convex portion 54 fits within the height of the holding frame 55. Therefore, when the louver 20 is attached to the adjuster 19 at the regular attachment position, there is no interference between the slide convex portion 54 and the vertically upward contact surface 22 that functions as the locking obstruction portion 58, and the louver 20 can be attached to the adjuster 19. It will be possible. That is, the louver 20 can be attached to the adjuster 19 when the upper surface of the louver 20 is located vertically above, and conversely, the louver 20 cannot be attached to the adjuster 19 when the upper surface of the louver 20 is located vertically below. This makes it possible to prevent the louver 20 from being reversely mounted, and is effective in preventing the louver 20 from being erroneously mounted when the wind direction guided by the louver 20 is directional.

As described above, since the fixed position of the adjuster 19 to the housing 1 is variable, as a result, the louver 20 can be mounted with a variable distance from the housing 1. Similarly, since the adjuster 19 can be attached to the housing 1 in any vertical orientation, the louver 20 can be attached vertically. Further, even when the adjuster 19 is integrally configured with the housing 1, the louver 20 can be attached to the adjuster 19 regardless of the vertical orientation of the adjuster 19 by the arrangement of the louver locking structure 40 described above. When the louver 20 has directivity in the wind direction, the reverse mounting prevention structure 50 enables the louver 20 to be attached to and detached from the adjuster 19 only when the upper surface of the louver 20 is located vertically above.

Further, the filter unit 2 (filter 5), the fan unit 3, the control unit 16, and the louver 20 having the above configuration are provided detachably from the housing 1. That is, as shown in FIG. 2, the filter 5 can be attached to and detached from the housing 1 by sliding and inserting the filter 5 along the rail 9 from the insertion port 10 constituting the filter frame 7. Further, the fan unit 3 is inserted through an opening adjacent to the insertion port 10 provided on the same surface 66, and can be attached to and detached from the inside of the housing 1 independently of the filter 5. Further, since the control unit 16 is fixed to the fan unit 3, it can be attached and detached at the same time as the fan unit 3 is attached and detached. The inserted fan unit 3 can be fixed to the fixing portion 29. In particular, the housing 1 has a structure in which the fan unit 3, the filter 5, and the control unit 16 can be detachably arranged from the same surface 66 in the housing 1, which is referred to as a detachable structure.

The louver 20 can be attached to and detached from the same surface 66 in parallel with the same surface 66 and with a variable distance from the housing 1 by the louver mounting structure described above. When the louver 20 is mounted on the housing 1 based on the louver mounting structure, a positive pressure space 80 surrounded by the same surface 66, the louver 20, the side surface 60, the opposite side surface 61, the top surface 62, and the bottom surface 63 is formed. It is formed. That is, the air supply fan 90 includes a positive pressure space 80.

The cross-sectional area of the positive pressure space 80 is larger than the opening area of the blowout opening 72. Here, the cross-sectional area is the area of the cross section in the positive pressure space 80 in the direction perpendicular to the flow of air ejected from the blowout opening 72. Further, as shown in FIG. 1, the length X of the long side forming the ventilation opening 73 is longer than the distance Y in the direction parallel to the long side of the blowout opening 72.

As shown in FIG. 1, the air supply fan 90 configured as described above includes an air air passage 18 that communicates from the air supply opening 70 in the housing 1 to the suction opening 71 via the fan unit 3.

The above is the schematic configuration of the air supply fan 90.

Next, the construction procedure of the air supply fan 90 will be described with reference to FIG. 7.

As shown in FIG. 7, the air supply fan 90 is preferably attached to a corner of the ceiling in the room, and the ventilation opening 73 is arranged so as to challenge the center of the room. By covering the housing 1 with an indoor wall and a decorative wall 67, the appearance of the housing 1 is obscured, and only the louver 20 as a decorative plate is exposed indoors. However, in order to attach the louver 20 having the ventilation opening 73 for supplying air to the room to the front surface 65 of the housing 1, the decorative wall 67 facing the front surface 65 is provided with a hole having the same shape as the front surface 65. ing.

The housing 1 is hung from the ceiling by a hanging portion 28 using a wire or the like. Both the top surface 62 and the bottom surface 63 of the housing 1 can be mounted toward the ceiling. That is, the housing 1 can be installed on the ceiling in a state where the direction of the air supply opening 70, which is determined by the direction of the ventilation opening 73, is arranged on either the left or right side with respect to the front 65. That is, the air supply fan 90 shown in FIG. 1 installed in the room with the air supply fan 90 upside down is the air supply fan 90 shown on the left side of FIG. 7, and is installed indoors with the air supply fan 90 turned upside down. Is the air supply fan 90 shown on the right side of FIG. In other words, the positive arrangement in which the air supply fan 90 is attached with the top surface 62 facing vertically upward is shown on the left in FIG. 7, and the air supply fan 90 is attached with the top surface 62 facing vertically downward. The arrangement in the opposite direction is shown on the right side of FIG.

Further, the adjuster 19 may be oriented up and down when attached to the housing 1. That is, unless the reverse mounting prevention structure 50 is provided, the louver 20 can be mounted vertically on the housing 1 through the front surface 65 without being affected by the vertical orientation of the housing 1. With such a structure, the enforcer can determine the direction of the air supply opening 70 in the housing 1 according to the installation environment, so that the workability is improved without being conscious of the duct piping direction.

The adjuster 19 can be moved in the housing 1 in a direction parallel to the front surface 65 by the above-mentioned louver mounting structure, and the fixed distance from the housing 1 is variable. That is, the louver 20 can be installed with a variable distance from the housing 1. When the housing 1 is covered with the decorative wall 67, a gap is formed between the front surface 65 and the decorative wall 67. On the other hand, the louver mounting structure having a variable distance prevents air from flowing out from the air supply fan 90, and makes it easy to align the decorative wall 67 and the louver 20. Therefore, it is not necessary to adjust the positions of the housing 1 and the decorative wall 67 at the time of construction, and the workability is simplified.

Next, the operation of the air supply fan 90 will be described with reference to FIGS. 1 and 7.

When the motor 14 is energized in the installation state shown in FIG. 7, the impeller 15 rotates in conjunction with the rotation of the rotating shaft 17.

By the rotation of the impeller 15, the air supply fan 90 supplies air from the outside into the housing 1 through the air supply opening 70, and passes through the filter 5 installed in the air air passage 18. At this time, since the filter 5 separates and accumulates dust in the air, the supplied air is purified.

The fan unit 3 guides the air purified by the filter 5 from the suction opening 71 to the blowout opening 72.

The air blown out from the blowout opening 72 is positively pressured in the positive pressure space 80, and is sent out with a uniform air volume from the ventilation opening 73. At this time, the wind direction is guided by the louver 20.

When the air supply fan 90 performs the above-mentioned air supply operation for a predetermined period of time, the filter 5 separates and accumulates dust contained in the air, so that the performance cannot be maintained and the filter 5 needs to be replaced regularly. It becomes.

Therefore, the user can easily expose the same surface 66 by facing the front 65 from the indoor side and removing the louver 20 attached to the front 65. Next, after removing the filter cover 11 from the same surface 66, the grip portion 8 provided on the filter 5 is grasped, and the filter 5 is slid toward and pulled out to be removed from the same surface 66.

The removed filter 5 is cleaned, or a new filter is separately attached to the housing 1 from the insertion port 10 in the reverse procedure. Then, by attaching the filter cover 11 and the louver 20 to the original positions, the air supply fan 90 becomes operable, and the maintenance of the filter 5 is completed.

Further, the fan unit 3 needs to be inspected regularly for cleaning the ventilation air passage. Further, when the motor 14, the impeller 15, or the control unit 16 fails, it is necessary to replace the motor 14, the impeller 15, or the control unit 16.

At this time, the user removes the louver 20 attached to the front 65 from the indoor side and faces the same surface 66 as in the case of replacing the filter 5. The fan unit 3 is fixed to the filter frame 7 and the fixing portion 29 attached to the inside of the housing 1 with screws, and is installed at a predetermined position inside the housing 1. Therefore, this screw is removed, and the fan unit 3 is slid toward the front from the front 65 and pulled out, and is removed from the same surface 66. After cleaning and inspecting the fan unit 3 or cleaning the inside of the housing 1, the fan unit 3 is attached to the original position so that the air supply fan 90 can be operated and the maintenance of the fan unit 3 is completed.

Further, since the control unit 16 is provided integrally with the fan unit 3, the control unit 16 can also be easily attached to and detached from the same surface 66.

As described above, even if the air supply fan 90 is covered with the decorative wall 67, maintenance can be performed only from the front 65 direction. That is, since the fan unit 3, the filter 5, and the control unit 16 can be attached and detached from the same surface, it is easy to access from the filter 5 on the upstream side to the outlet opening 72 on the downstream side during maintenance, and maintainability is improved. It can be a high air supply fan 90.

Further, since the opening area of the blowout opening 72 is smaller than the cross-sectional area of the positive pressure space 80, dust that cannot be collected by the filter 5 is deposited in the positive pressure space 80 outside the blowout opening 72 in which the air diffuses. It will be easier to do. Therefore, since the cleaning target of the fan casing 12 is limited to the vicinity of the blowout opening 72, the cleaning range is narrow and the cleaning can be easily performed.

Since the air supply fan according to the present invention can access only the target location from the same surface in the housing, it is easy to access from the filter on the upstream side to all the indoor outlets on the downstream side during maintenance. It is effective as an air supply fan with good maintenance.

1 Housing 2 Filter part 3 Fan unit 4 Louver part 5 Filter 6 Filter holding part 7 Filter frame 8 Grip part 9 Rail 10 Insertion port 11 Filter cover 12 Fan casing 13 Motor fixing plate 14 Motor 15 Impeller 16 Control part 17 Rotating shaft 18 Air air passage 19 Adjuster 20 Louver 21 Outer wall 22 Contact surface 23 Upper surface 24 Lower surface 25 Right surface 26 Left surface 27 Support wall 28 Suspended part 29 Fixed part 30 Front fixing plate 40 Louver locking structure 41 Louver side locking tool 42 Casing side Locking tool 50 Reverse mounting prevention structure 51 Slide part 52 Slide recess 53 Slide body 54 Slide convex part 55 Holding frame 56 Holding end 57 Holding base 58 Locking obstruction 59 Slide end face 60 Side 61 Reverse side 62 Top surface 63 Bottom surface 64 Back side 65 Front side 66 Same side 67 Decorative wall 70 Air supply opening 71 Suction opening 72 Blow-out opening 73 Ventilation opening 80 Positive pressure space 90 Air supply fan 101 Casing 102 First opening 103 Second opening 104 Air flow path 105 Blower 106 First Filter 107 Airflow guide 108 Second filter 109 Overhang

Claims (2)

A housing that can be arranged in a forward direction in which a predetermined surface is arranged vertically above and in a reverse direction in which the predetermined surface is arranged vertically below.
An air supply opening for supplying air from the outside of the housing and
The blowout opening that blows out the air inside the housing,
A fan unit that guides air from the air supply opening to the blowout opening,
A louver that has a ventilation opening and guides the direction of the air blown from the blowout opening on the downstream side of the blowout opening .
A louver locking structure that locks the housing and the louver corresponding to both the forward arrangement and the reverse arrangement.
A reverse mounting prevention structure for preventing mounting of the upper side of the louver vertically downward regardless of the forward arrangement and the reverse arrangement of the housing is provided.
The reverse mounting prevention structure
A slide part that slides vertically downward due to its own weight,
An air supply fan including a locking blocking portion that contacts the sliding portion located vertically below and inhibits locking between the housing and the louver with the upper side of the louver located vertically below. .. The slide portion is provided on the louver and is provided on the louver.
The air supply fan according to claim 1 , wherein the locking blocking portion is provided in the housing.

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