JP2023157616A - Ventilation device - Google Patents

Abstract

To provide a ventilation device that saves space inside the ventilation device while avoiding damage to electric wires.SOLUTION: A ventilation device according to an embodiment comprises a body frame comprising a cylindrical duct part, an impeller provided in the duct part, a motor for rotating the impeller, and an electric component box housing electric components to which a plurality of electric wires is connected. The plurality of electric wires is constituted so as to include internal electric wires connected to the motor, and external electric wires extending to the outside of the ventilation device. The internal electric wires and the external electric wires are arranged side by side along an outer peripheral surface of the duct part.SELECTED DRAWING: Figure 1

Description

Embodiments of the invention relate to ventilation devices.

BACKGROUND ART Conventionally, a so-called pipe fan is known as a ventilation device in which a through hole is provided through a wall, ceiling, etc., a pipe is inserted into the through hole, and a main body is attached inside the pipe. In this type of ventilation system, electric wires that supply power to the ventilation system are drawn out inside a pipe, a wall, a ceiling, or the like.

Japanese Patent Application Publication No. 7-151365

By the way, if the electric wire is routed in a bent state, the electric wire may be damaged by, for example, coming into contact with the inner peripheral surface of the pipe during installation to connect the ventilation device to the pipe. Additionally, if multiple electric wires, one installed inside the ventilation system and the other wires drawn out from the ventilation system, are placed in different locations inside the ventilation system, they will get in the way of the installation work of the ventilation system, and the work efficiency will be reduced. Not only will this result in a decrease in air flow, but there is also a risk that the space inside the ventilation system will be compressed.

Therefore, the present invention provides a ventilation device that saves space inside the ventilation device while avoiding damage to electric wires during installation of the ventilation device.

The ventilation device according to the embodiment houses a main body frame having a cylindrical duct part, an impeller provided in the duct part, a motor for rotating the impeller, and electrical components to which a plurality of electric wires are connected. an electrical equipment box, and the plurality of electric wires include an internal electric wire connected to the motor and an external electric wire extending outside the ventilation device, and the internal electric wire and the external electric wire are connected to the duct. are arranged side by side along the outer peripheral surface of the section.

A cross-sectional view conceptually showing an example of an installation state of a ventilation device according to an embodiment Rear view of a ventilator according to one embodiment A perspective view showing an example of the positional relationship between a plurality of walls provided on the outer peripheral surface of a duct part and a partition part according to an embodiment A diagram illustrating an example of a configuration around a plurality of accommodation spaces that accommodate a plurality of electric wires according to an embodiment An enlarged view showing an arrow X5 portion in FIG. 3 for an example of a ventilation device according to an embodiment.

Hereinafter, a ventilation device 1 according to an embodiment will be described with reference to the drawings. The ventilation device 1 is installed, for example, on a wall or ceiling, and is used to ventilate outdoor air and indoor air, mainly to exhaust air. In this embodiment, the ventilation device 1 is installed at a position corresponding to a pipe 91 provided on a wall 90 that communicates the outdoors and the indoors, as shown in FIG. Note that if the distance from the installation position of the ventilation device 1 to the outdoors is long, a flexible duct may be connected to the end of the pipe 91 to extend the air passage to the outdoors. The ventilation device 1 includes a main body frame 10, a ventilation mechanism 20, a decorative frame 30, and an electrical equipment box 40. In the following description, the side on which the decorative frame 30 in FIG.

The main body frame 10 is, for example, an integrally molded product made of synthetic resin, and has a generally rectangular shape as a whole. The main body frame 10 constitutes the main body of the ventilation device 1. The outer peripheral edge of the main body frame 10 contacts the wall surface of the wall 90 and is screwed to the wall surface. The main body frame 10 has a duct portion 11, a bell mouth 12, and a mounting spring 13.

The duct portion 11 is provided approximately at the center of the main body frame 10 so as to extend toward the back surface. The duct portion 11 is formed in a cylindrical shape, such as a cylindrical shape or a rectangular tube shape, for example. In this embodiment, the duct portion 11 is formed in a cylindrical shape. The duct portion 11 is inserted into the pipe 91 . The outer circumferential surface 111 of the duct portion 11 is spaced apart from the inner circumferential surface of the pipe 91. The duct portion 11 is configured to be detachably connected to a shutter device (not shown) that opens and closes the air outlet of the duct portion 11. Shutter devices are added as required by the installation location.

The bell mouth 12, which has an enlarged diameter and is smoothly connected to the inner circumferential surface of the duct portion 11, has a generally annular shape as a whole and is provided on the front side of the main body frame 10. The bell mouth 12 is for adjusting the air flow. The bell mouth 12 has an opening 121, as shown in FIG. As shown in FIG. 2, a plurality of attachment springs 13, in this case two attachment springs, are provided on the outer circumferential surface 111 of the duct portion 11 at intervals. The attachment spring 13 is formed of, for example, a plate spring, and is configured to come into contact with the inner circumferential surface of the pipe 91. The attachment spring 13 holds the main body frame 10 within the pipe 91 by its elastic force in the radial direction.

The blower mechanism 20 includes an impeller 21 that is a propeller fan and a motor 22. The impeller 21 and the motor 22 are provided inside the duct portion 11, as shown in FIG. The impeller 21 extends radially from the center of the blower mechanism 20 toward the outside in the radial direction. The motor 22 has a function of rotating the impeller 21 in forward and reverse directions. The motor 22 has a rotating shaft 221. The central axis of the rotating shaft 221 coincides with the central axis of the duct portion 11. The impeller 21 is removably attached to the rotating shaft 221 by screwing or the like. The impeller 21 rotates within the duct portion 11 by driving the motor 22 and rotating the rotating shaft 221 . By operating the impeller 21, indoor air passes through the inside of the duct part 11 and is exhausted outdoors, or outside air passes through the inside of the duct part 11 and is supplied indoors.

Moreover, the main body frame 10 has a motor cover 14, as shown in FIGS. 1 and 2. The motor cover 14 is provided on the back side of the main body frame 10. The motor cover 14 is for supporting the blower mechanism 20. The motor cover 14 can be configured to include a motor cover main body 141 and a fixing part 142. The motor cover main body 141 has, for example, a cylindrical recess on the inside, into which the motor 22, which is a single-phase induction motor, is inserted and fixed.

A plurality of rod-shaped fixing parts 142, in this case three, are provided at intervals in the circumferential direction of the motor cover main body 141. The intervals between the plurality of fixing parts 142 are set at equal intervals. The intervals between the plurality of fixing parts 142 are not limited to equal intervals, but may be irregular intervals. The fixed part 142 has one end connected to the motor cover main body 141 and the other end connected to the duct part 11. The fixing part 142, the motor cover main body 141, and the duct part 11 are integrally molded from synthetic resin. The fixed part 142 functions as a support part for the motor 22.

The decorative frame 30 constitutes the front surface of the ventilation device 1. The decorative frame 30 covers the periphery of the main body frame 10, as shown in FIG. The decorative frame 30 is detachably attached to the main body frame 10 by, for example, a snap fit or a screw member. The decorative frame 30 has a plurality of ventilation holes 301. The ventilation hole 301 communicates the outside and the inside of the ventilation device 1. In FIG. 1, in order to make the drawing easier to read, only one ventilation hole 301 is labeled with a reference numeral, and the other ventilation holes 301 are omitted.

The electrical equipment box 40 is housed inside the main body frame 10, as shown in FIGS. 1 and 2. The electrical equipment box 40 is provided, for example, at one corner of the lower part of the main body frame 10. The electrical equipment box 40 is, for example, a case made of flame-retardant synthetic resin, and houses electrical components 41 including a running capacitor for driving the motor 22, protective elements such as fuses, connection terminals, and the like. A plurality of electric wires 51 and 52 are connected to these electric components 41, as shown in FIG. 1 and the like. The plurality of electric wires 51 and 52 are for, for example, supplying electric power to the ventilation apparatus 1 and its components.

In this case, the plurality of electric wires 51 and 52 include an internal electric wire 51 connected to the motor 22 to supply power to the motor 22, and an external electric wire 52 connected to the outside of the ventilation device 1. In other words, the internal wire 51 connects the electrical component 41 and the motor 22. External wire 52 connects electrical component 41 to an external component. The external components are components required for connecting the power source of the ventilation apparatus 1, such as a power switch, a motor speed change switch, and a power plug. Further, although details are not shown, a ground wire 53 is connected to the motor 22. The ground wire 53 is electrically connected to the outer shell of the metal motor 22 by a fastening member made of, for example, a bolt and a nut.

If the electric wires 51 and 52 are not routed properly inside the ventilation device 1, they will get in the way of the work when installing the ventilation device 1, resulting in a decrease in work efficiency, and the electric wires 51 and 52 may come into contact with other parts. Failure to do so may result in damage. Further, when parts for accommodating the plurality of electric wires 51 and 52 are individually provided for each electric wire, the number of parts increases, leading to an increase in manufacturing cost. Furthermore, the increase in the number of parts may have the effect of compressing the space inside the ventilation device 1.

Therefore, in this embodiment, the main body frame 10 has a plurality of wall parts 611, 612, a plurality of standing parts 621, 622, a partition part 71, and an extension part 72, as shown in FIGS. 2 to 4. ing. The plurality of walls 611 and 612 are located at intervals on the outer circumferential surface 111 of the duct part 11 and extend in parallel along the axial direction of the duct part 11, that is, from the front side to the back side. In the following description, when distinguishing between the plurality of walls 611 and 612, the wall 611 located far from the electrical box 40 will be referred to as the first wall 611, and the wall located near the electrical box 40 will be referred to as the first wall 611. 612 may be referred to as a second wall portion 612.

The length dimensions of the plurality of wall sections 611 and 612 can be set to be approximately the same as the length dimension of the portion of the duct section 11 that enters the inside of the pipe 91. Further, the height of the first wall portion 611 is set to be slightly smaller than the outer diameter of the internal electric wire 51. The height of the second wall portion 612 is set to be slightly smaller than the outer diameter of the external electric wire 52. The plurality of walls 611 and 612 may have the same shape and dimensions, or may have different shapes and dimensions.

The plurality of standing parts 621 and 622 are formed integrally with the wall parts 611 and 612, respectively. Each of the upright portions 621 and 622 is formed to rise from each of the wall portions 611 and 612 toward the outside in the radial direction. Each of the upright portions 621 and 622 is located, for example, near the proximal end of each of the wall portions 611 and 612, that is, the front end of the main body frame 10. Note that the plurality of upright portions 621 and 622 may be formed separately from the wall portions 611 and 612, respectively.

The distance from the outer circumferential surface 111 of the duct portion 11 to the tip of each standing portion 621, 622 is set to be larger than at least the outer diameter of each electric wire 51, 52. The plurality of upright portions 621 and 622 may have the same shape and dimensions, or may have different shapes and dimensions. In this embodiment, the upright portion 621 provided on the first wall portion 611 may be referred to as a first upright portion 621, and the upright portion 622 provided on the second wall portion 612 may be referred to as a second upright portion 622.

The partition part 71 is located between the plurality of walls 611 and 612. The partition part 71 projects outward from the duct part 11 and extends along the axial direction of the duct part 11, and is arranged in parallel with the plurality of walls 611 and 612. Similar to the plurality of walls 611 and 612, the length of the partition portion 71 is approximately the same as the length of the duct portion 11 of the portion that enters the inside of the pipe 91. The length of the partition portion 71 may be different from the length of the plurality of walls 611 and 612. Further, the height of the partition portion 71 is set to be slightly smaller than the outer diameter of the internal electric wire 51. The partition portion 71 and the plurality of walls 611 and 612 are all integrally molded with the duct portion 11, that is, the motor cover main body 141.

The extending portion 72 is formed integrally with the partition portion 71. The extending portion 72 is formed to rise from the partition portion 71 toward the outside in the radial direction. The extending portion 72 is located, for example, near the proximal end of the partition portion 71, that is, the front end of the main body frame 10. The distance from the outer circumferential surface 111 of the duct portion 11 to the tip of the extension portion 72 is set to be larger than at least the outer diameter of each electric wire 51, 52. Note that the extending portion 72 may be formed separately from the partition portion 71.

As shown in FIG. 4, accommodation spaces S1 and S2 are formed between the partition portion 71 and the mutually opposing wall portions 611 and 612, respectively. The accommodation spaces S1 and S2 are spaces that can accommodate the electric wires 51 and 52, respectively. In this embodiment, the accommodation space S1 formed between the first wall part 611 and the partition part 71 is referred to as the first accommodation space S1, and the accommodation space S1 formed between the second wall part 612 and the partition part 71 is referred to as a first accommodation space S1. The accommodation space S2 may be referred to as a second accommodation space S2.

In this case, the first accommodation space S1 is formed by the outer peripheral surface 111 of the duct portion 11, the first wall portion 611, and the partition portion 71. The second accommodation space S2 is formed by the outer circumferential surface 111 of the duct portion 11, the second wall portion 612, and the partition portion 71. The first accommodation space S1 can accommodate the internal electric wire 51. On the other hand, the second accommodation space S2 can accommodate the external electric wire 52. The first accommodation space S1 and the second accommodation space S2 are formed side by side along the outer circumferential surface 111 of the duct portion 11. That is, the internal electric wire 51 and the external electric wire 52 are arranged side by side along the outer circumferential surface 111 of the duct portion 11. The width dimension of each accommodation space S1, S2, that is, the mutual distance between each wall part 611, 612 and the partition part 71, is slightly larger than the outer diameter of each electric wire 51, 52 accommodated in each accommodation space S1, S2. It is set so that

In this way, by forming the accommodation spaces S1 and S2 for accommodating the plurality of electric wires 51 and 52 near the outer peripheral surface 111 of the duct part 11, the plurality of electric wires 51 and 52 are prevented from coming into contact with other parts and being damaged. You can avoid the situation where it gets stuck. In addition, by using the partition portion 71 in common as a member forming each of the housing spaces S1 and S2, it is possible to suppress an increase in the number of parts, thereby reducing costs and saving space inside the ventilation device 1. Furthermore, the distances from the electrical equipment box 40 to the walls 611, 612 and the partition 71, that is, the distances from each housing space S1, S2, are set to be smaller than the distance from the electrical equipment box 40 to the motor 22. In this way, the electric wires 51 and 52 exposed to the outside from the electrical equipment box 40 can be guided to the respective housing spaces S1 and S2 at positions as close as possible to the electrical equipment box 40.

Further, the main body frame 10 has a wall side protrusion 63 and a partition side protrusion 73. The wall-side protruding portion 63 is provided on one or both of the plurality of upright portions 621 and 622, and is formed to protrude toward the partition portion 71 side. In this embodiment, as shown in FIG. 4, the wall-side protrusion 63 is provided only on the first wall 611 side among the plurality of walls 611 and 612. That is, the wall-side protrusion 63 is provided only in the first upright portion 621 among the plurality of upright portions 621 and 622. The wall side protrusion 63 is formed integrally with the first standing portion 621. The wall side protrusion 63 protrudes in a direction that partially reduces the distance between the first wall 611 and the partition 71. The wall side protrusion 63 protrudes from the first upright portion 621 toward the first accommodation space S1. Note that the wall side protrusion 63 may be provided only on the second upright portion 622, that is, on the second wall 612 side. Further, the wall side protrusion 63 is formed of, for example, a trapezoidal protrusion, but is not limited thereto, and may be a hook-shaped or circular protrusion. The wall protrusion 63 may be formed separately from the first standing portion 621.

The partition side protrusion 73 is formed, for example, to protrude from the extension 72 toward the opposing walls 611 and 612. That is, the partition side protrusion 73 protrudes in the shape of an arrow in a direction that partially reduces the distance between the partition 71 and each of the walls 611 and 612. The partition side protrusion 73 is formed integrally with the extension 72. The partition side protrusions 73 protrude from the extensions 72 toward the accommodation spaces S1 and S2, respectively. Note that the partition-side protrusion 73 may be formed on one of the opposing walls 611 and 612. Furthermore, the partition side protrusion 73 may be a hook-shaped or circular protrusion. The partition side protrusion 73 may be formed separately from the extension 72.

The upright parts 621, 622 and the extending part 72 have a function of guiding each electric wire 51, 52 toward each accommodation space S1, S2 when each electric wire 51, 52 is accommodated in each accommodation space S1, S2. . In this case, since the upright portions 621, 622 and the extending portion 72 are integrally molded with the outer circumferential surface 111 of the duct portion 11 from synthetic resin, their fulcrum points are at the boundaries with the walls 611, 612 and the partition portion 71, respectively. It is elastically deformable. Therefore, by deforming the upright portions 621, 622 and the extending portion 72, it becomes easier to accommodate the electric wires 51, 52 into the accommodation spaces S1, S2.

Then, when each electric wire 51, 52 is accommodated in each housing space S1, S2, the upright portions 621, 622 and the extension portion 72 return to their original shapes, and the wall side protrusion 63 and the partition side protrusion 73 It prevents it from falling out. Therefore, the electric wires 51 and 52 accommodated in the accommodation spaces S1 and S2 are prevented from moving outside of the accommodation spaces S1 and S2. In this case, the wall side protrusion 63 and the partition side protrusion 73 constitute the entrance portions of the accommodation spaces S1 and S2.

As shown in FIG. 5, the rear end of the duct part 11 is provided with a plurality of groove parts 112. Each groove portion 112 is provided at a position corresponding to each accommodation space S1, S2. In other words, the plurality of grooves 112 are arranged side by side on the outer circumferential surface 111 of the duct part 11 with the partition part 71 in between. The groove portion 112 is formed by recessing the end portion of the back side of the duct portion 11 toward the front side. The groove portion 112 is formed, for example, in a substantially U-shape. The electric wires 51 and 52 can be fitted into the plurality of grooves 112, respectively. In other words, each of the electric wires 51 and 52 is held in the duct portion 11 while being pushed into the groove portion 112 corresponding to the electric wire 51 and 52, respectively. In this case, each groove portion 112 constitutes an exit portion of the accommodation spaces S1 and S2.

In this way, the internal electric wire 51 is maintained in the state accommodated in the first accommodation space S1 by the wall side protrusion 63, the partition side protrusion 73, and the groove 112. On the other hand, the external electric wire 52 is maintained housed in the second housing space S2 by the partition side protrusion 73 and the groove 112. Further, the portions of the electric wires 51, 51 that extend beyond the groove portion 112 can be bound together with the ground wire 53 using a binding band 74, for example.

According to the embodiment described above, the ventilation device 1 includes the main body frame 10, the impeller 21, the motor 22, and the electrical equipment box 40. The main body frame 10 has a cylindrical duct portion 11 . The impeller 21 is provided within the duct portion 11. The motor 22 rotates the impeller 21. The electrical equipment box 40 houses an electrical component 41 to which a plurality of electric wires 51 and 52 are connected. The plurality of electric wires 51 and 52 are configured to include an internal electric wire 51 connected to the motor 22 and an external electric wire 52 connected to external components of the ventilation device 1. The internal electric wire 51 and the external electric wire 52 are arranged side by side along the outer circumferential surface 111 of the duct portion 11.

According to this, by arranging the plurality of electric wires 51 and 52 in line along the outer peripheral surface 111 of the duct part 11, the electric wires 51 and 52 can be connected to other members such as a pipe 91 provided inside the wall 90 of the building. The plurality of electric wires 51 and 52 can be routed together to a minimum while avoiding damage due to contact with the electric wires. As a result, it is possible to save space inside the ventilation device 1 while avoiding damage to the electric wires 51 and 52 during installation of the ventilation device 1.

The main body frame 10 has a plurality of wall portions 611 and 612 that protrude from the outer peripheral surface 111 of the duct portion 11 at intervals and extend along the axial direction of the duct portion 11. Further, the main body frame 10 protrudes from the outer circumferential surface 111 of the duct part 11 at a position between the plurality of walls 611 and 612, extends along the axial direction of the duct part 11, and extends between the opposing walls 611 and 612. It has a partition portion 71 that forms accommodation spaces S1 and S2 that can accommodate the electric wires 51 and 52, respectively.

According to this, the electric wires 51 and 52 can be accommodated in the accommodation spaces S1 and S2 formed between the plurality of walls 611 and 612 and the partition part 71, respectively. Thereby, it is possible to effectively prevent the plurality of electric wires 51 and 52 from interfering with other members. Further, since there is no need to separately provide parts for accommodating the plurality of electric wires 51 and 52, manufacturing costs can be reduced by reducing the number of parts. As a result, the plurality of electric wires 51 and 52 can be accommodated with a simple configuration while further saving space inside the ventilation device 1.

Further, the main body frame 10 further includes protrusions 63 and 73. The protruding parts 63 and 73 are provided on either or both of the wall parts 611 and 612 side or the partition part 71 side, and protrude toward the accommodation spaces S1 and S2. According to this, the protrusions 63 and 73 can prevent the electric wires 51 and 52 from coming off and falling from the accommodation spaces S1 and S2. Thereby, the electric wires 51 and 52 can be held stably.

The duct portion 11, the wall portions 611, 612, the partition portion 71, and the protruding portions 63, 73 are integrally molded from synthetic resin. According to this, by integrally molding the members forming the accommodation spaces S1 and S2 for accommodating the electric wires 51 and 52 with synthetic resin, the number of parts is reduced and manufacturing costs are reduced, and the assembly of the ventilation system 1 is Workability can be improved.

Note that by forming the height dimensions of each of the walls 611, 612 and the partition part 71 to be larger than the outer diameter of each electric wire 51, 52, a configuration in which the upright parts 621, 622 and the extending part 72 are omitted can be achieved. It can be done.
Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. This novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. This embodiment and its modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

In the drawing, 1 is a ventilation system, 10 is a main body frame, 11 is a duct, 111 is an outer surface, 21 is an impeller, 22 is a motor, 40 is an electrical box, 41 is an electrical component, 51 is an internal electric wire, and 52 is an external part. Electric wires, 611 and 612 are wall parts, 63 and 73 are protruding parts, 71 is a partition part, and S1 and S2 are accommodation spaces.

Claims (4)

a main body frame having a cylindrical duct portion;
an impeller provided within the duct portion;
a motor that rotates the impeller;
Equipped with an electrical box that stores electrical components to which multiple electric wires are connected,
The plurality of electric wires include an internal electric wire connected to the motor and an external electric wire extending outside the ventilation device,
The internal electric wire and the external electric wire are arranged side by side along the outer peripheral surface of the duct part,
Ventilation equipment. The main body frame includes a plurality of wall portions located at intervals on the outer circumferential surface of the duct portion and extending along the axial direction of the duct portion, and a wall portion located between and facing the plurality of wall portions. and a partition portion forming a storage space capable of accommodating each of the electric wires between the partition portion and the partition portion.
A ventilator according to claim 1. Further, one or both of the wall portion side and the partition portion side has a protrusion portion that protrudes toward the accommodation space side.
The ventilation device according to claim 2. The duct portion, the wall portion, the partition portion, and the protrusion portion are integrally molded with synthetic resin.
The ventilation device according to claim 3.

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