ventilation equipment

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

[Technical Field]

[0001] FIELD OF THE INVENTION An embodiment of the present invention relates to a ventilation device. [Background technology]

[0002] Conventionally, so-called pipe fans, which are ventilation devices that have a through hole that penetrates a wall, ceiling, etc., and a main body that is attached to the inside of the pipe, are known. In this type of ventilation device, electric wires that supply power to the ventilation device are drawn inside the pipe or to the wall or ceiling, etc. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-151365 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the electric wires are routed in a bent state, they may be damaged, for example, by coming into contact with the inner surface of the pipe when the ventilation device is connected to the pipe during installation. Furthermore, if multiple electric wires, including those installed inside the ventilation device and those pulled out from the ventilation device to the outside, are arranged in different locations inside the ventilation device, this not only interferes with the installation work of the ventilation device, reducing workability, but also may take up space inside the ventilation device.

[0005] Therefore, the present invention provides a ventilation device that can avoid damage to the electric wires when the ventilation device is installed and also saves space inside the ventilation device. [Means for solving the problem]

[0006] The ventilation device according to the embodiment includes: A ventilation device for ventilating outdoor air and indoor air,The ventilation device comprises a main body frame having a cylindrical duct portion, an impeller provided within the duct portion, a motor for rotating the impeller, and an electrical box for housing electrical components to which a plurality of electric wires are connected, the plurality of electric wires including an internal electric wire connected to the motor and an external electric wire extending to the outside of the ventilation device, and the internal electric wire and the external electric wire are arranged side by side along the outer circumferential surface of the duct portion. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a cross-sectional view conceptually illustrating an example of an installation state of a ventilation device according to an embodiment. [Figure 2] 1 is a rear view of a ventilation device according to an embodiment; [Figure 3] FIG. 10 is a perspective view showing an example of a positional relationship between a plurality of wall portions and a partition portion provided on an outer peripheral surface of a duct portion according to an embodiment; [Figure 4] FIG. 1 is a diagram illustrating an example of a configuration around a plurality of housing spaces that house a plurality of electric wires according to an embodiment. [Figure 5] FIG. 4 is an enlarged view of the portion of the arrow X5 in FIG. 3 in an example of a ventilation device according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] A ventilation device 1 according to one embodiment will be described below with reference to the drawings. The ventilation device 1 is mounted on, for example, a wall or ceiling to ventilate outdoor air and indoor air, primarily for exhaust. In this embodiment, the ventilation device 1 is installed at a position corresponding to a pipe 91 that connects the indoor and outdoor areas and is mounted on a wall 90, as shown in FIG. 1 . If the distance from the installation location of the ventilation device 1 to the outdoor area is long, a flexible duct may be connected to the end of the pipe 91 to extend the air passage to the outdoor area. The ventilation device 1 includes a main frame 10, a blower mechanism 20, a decorative frame 30, and an electrical box 40. In the following description, the side of the ventilation device 1 where the decorative frame 30 is mounted in FIG. 1 will be referred to as the front side, and the opposite side will be referred to as the back side.

[0009] The main body frame 10 is a one-piece molded product made of, for example, synthetic resin, and is formed in a generally rectangular shape overall. The main body frame 10 constitutes the main body of the ventilation device 1. The outer periphery of the main body frame 10 contacts the surface of the wall 90 and is fastened to the wall with screws. The main body frame 10 has a duct section 11, a bell mouth 12, and an attachment spring 13.

[0010] The duct portion 11 is provided at approximately the center of the main body frame 10 so as to extend to the rear surface. The duct portion 11 is formed in a tubular shape, such as a cylindrical or rectangular tube shape. In this embodiment, the duct portion 11 is formed in a cylindrical shape. The duct portion 11 is inserted inside the pipe 91. An outer peripheral surface 111 of the duct portion 11 is positioned at a distance from the inner peripheral surface of the pipe 91. The duct portion 11 is configured so as to be detachably connectable to a shutter device (not shown) that opens and closes the air outlet of the duct portion 11. The shutter device is added as needed for the installation location.

[0011] The bell mouth 12, which is smoothly connected to the inner peripheral surface of the duct portion 11 and has an expanded diameter, is formed in a generally circular ring shape overall and is provided on the front side of the main body frame 10. The bell mouth 12 is used to regulate the flow of air. As shown in FIG. 1, the bell mouth 12 forms an opening 121. As shown in FIG. 2, a plurality of mounting springs 13 (two in this case) are provided at intervals on the outer peripheral surface 111 of the duct portion 11. The mounting springs 13 are formed, for example, from leaf springs and are configured to come into contact with the inner peripheral surface of the pipe 91. The mounting springs 13 hold the main body frame 10 in the pipe 91 by their radial elastic force.

[0012] The blower mechanism 20 has an impeller 21, which is a propeller fan, and a motor 22. As shown in FIG. 1 , the impeller 21 and the motor 22 are provided inside the duct unit 11. The impeller 21 extends radially outward from the center of the blower mechanism 20. 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 unit 11. The impeller 21 is detachably attached to the rotating shaft 221 by a method such as screw fastening. The motor 22 is driven to rotate the rotating shaft 221, causing the impeller 21 to rotate within the duct unit 11. Operation of the impeller 21 causes indoor air to be exhausted to the outdoors through the inside of the duct unit 11, or causes outside air to be supplied indoors through the inside of the duct unit 11.

[0013] 1 and 2, the main body frame 10 also has a motor cover 14. The motor cover 14 is provided on the rear 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 have a motor cover main body 141 and a fixing portion 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.

[0014] A plurality of rod-shaped fixing portions 142 (three in this case) are provided at intervals around the circumferential direction of the motor cover main body 141. The fixing portions 142 are spaced apart at equal intervals. The spacing between the fixing portions 142 is not limited to being equal, and may be uneven. One end of the fixing portion 142 is connected to the motor cover main body 141, and the other end is connected to the duct portion 11. The fixing portion 142, motor cover main body 141, and duct portion 11 are integrally molded from synthetic resin. The fixing portion 142 functions as a support for the motor 22.

[0015] The decorative frame 30 forms the front surface of the ventilation device 1. As shown in FIG. 1, the decorative frame 30 covers the periphery of the main body frame 10. The decorative frame 30 is detachably attached to the main body frame 10, for example, by snap fitting or screw members. The decorative frame 30 has multiple ventilation holes 301. The ventilation holes 301 communicate with the outside and inside of the ventilation device 1. Note that in FIG. 1, to make the drawing easier to understand, only one ventilation hole 301 is marked with a reference numeral, and the reference numerals for the other ventilation holes 301 are omitted.

[0016] As shown in Figures 1 and 2, the electrical box 40 is housed inside the main body frame 10. The electrical box 40 is provided, for example, in one corner of the lower part of the main body frame 10. The electrical box 40 is, for example, a case made of flame-retardant synthetic resin, and houses electrical components 41 including protective elements such as a running capacitor and fuse for driving the motor 22, connection terminals, etc. As shown in Figure 1 etc., a plurality of electric wires 51, 52 are connected to these electrical components 41. The plurality of electric wires 51, 52 are, for example, for supplying power to the ventilator 1 and its components.

[0017] In this case, the multiple electric wires 51, 52 are configured to include an internal electric wire 51 that is connected to the motor 22 and supplies power to the motor 22, and an external electric wire 52 that is connected to the outside of the ventilator 1. In other words, the internal electric wire 51 connects the electric component 41 to the motor 22. The external electric wire 52 connects the electric component 41 to external components. Examples of external components include components required to connect the power supply to the ventilator 1, such as a power switch, a motor speed change switch, and a power plug. In addition, although not shown in detail, a ground wire 53 is connected to the motor 22. The ground wire 53 is electrically conductively attached to the metal outer casing of the motor 22 by fastening members such as bolts and nuts.

[0018] If the electric wires 51, 52 are not routed properly inside the ventilation device 1, this can interfere with the installation of the ventilation device 1, reducing workability, and the electric wires 51, 52 may come into contact with other components and be damaged. Furthermore, if separate components are provided to accommodate the multiple electric wires 51, 52, the number of components increases, leading to increased manufacturing costs. Furthermore, the increased number of components may have the effect of reducing the space inside the ventilation device 1.

[0019] 2 to 4, the main body frame 10 has a plurality of wall portions 611, 612, a plurality of upright portions 621, 622, a partition portion 71, and an extending portion 72. The plurality of wall portions 611, 612 are positioned at intervals on the outer peripheral surface 111 of the duct portion 11, and extend parallel to each other along the axial direction of the duct portion 11, that is, from the front side to the back side. In the following description, when distinguishing between the plurality of wall portions 611, 612, the wall portion 611 located farther from the electrical box 40 may be referred to as the first wall portion 611, and the wall portion 612 located closer to the electrical box 40 may be referred to as the second wall portion 612.

[0020] The length of the multiple wall portions 611, 612 can be set to be approximately the same as the length of the duct portion 11 that enters the inside of the pipe 91. The height of the first wall portion 611 is set to be slightly smaller than the outer diameter of the inner electric wire 51. The height of the second wall portion 612 is set to be slightly smaller than the outer diameter of the outer electric wire 52. The multiple wall portions 611, 612 may have the same shape and size, or may have different shapes and sizes.

[0021] The plurality of upright portions 621, 622 are formed integrally with the wall portions 611, 612, respectively. Each upright portion 621, 622 is formed by rising radially outward from each wall portion 611, 612. Each upright portion 621, 622 is located, for example, near the base end side of each wall portion 611, 612, that is, near the end portion on the front side of the main body frame 10. Note that the plurality of upright portions 621, 622 may also be formed separately from the wall portions 611, 612, respectively.

[0022] The distance from the outer peripheral surface 111 of the duct portion 11 to the tip of each of the upright portions 621, 622 is set to a dimension that is at least greater than the outer diameter of each of the electric wires 51, 52. The upright portions 621, 622 may have the same shape and dimension, 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 the first upright portion 621, and the upright portion 622 provided on the second wall portion 612 may be referred to as the second upright portion 622.

[0023] The partition portion 71 is located between the multiple wall portions 611, 612. The partition portion 71 protrudes outward from the duct portion 11, extends along the axial direction of the duct portion 11, and is arranged parallel to the multiple wall portions 611, 612. The length of the partition portion 71, like the multiple wall portions 611, 612, is approximately the same as the length of the portion of the duct portion 11 that extends inside the pipe 91. The length of the partition portion 71 may be different from the length of the multiple wall portions 611, 612. The height of the partition portion 71 is set to be slightly smaller than the outer diameter of the internal electric wires 51. The partition portion 71 and the multiple wall portions 611, 612 are all integrally molded with the duct portion 11, i.e., the motor cover main body 141.

[0024] The extending portion 72 is formed integrally with the partition portion 71. The extending portion 72 is formed by rising radially outward from the partition portion 71. The extending portion 72 is located, for example, near the base end side of the partition portion 71, i.e., the end portion on the front side of the main body frame 10. The distance from the outer peripheral surface 111 of the duct portion 11 to the tip of the extending portion 72 is set to a dimension that is at least larger than the outer diameter of each of the electric wires 51, 52. The extending portion 72 may be formed separately from the partition portion 71.

[0025] 4, storage spaces S1 and S2 are formed between the partition 71 and the opposing wall portions 611 and 612, respectively. The storage spaces S1 and S2 are spaces capable of storing the electric wires 51 and 52, respectively. In this embodiment, the storage space S1 formed between the first wall portion 611 and the partition 71 may be referred to as the first storage space S1, and the storage space S2 formed between the second wall portion 612 and the partition 71 may be referred to as the second storage space S2.

[0026] In this case, the first accommodating space S1 is defined by the outer peripheral surface 111 of the duct portion 11, the first wall portion 611, and the partition portion 71. The second accommodating space S2 is defined by the outer peripheral surface 111 of the duct portion 11, the second wall portion 612, and the partition portion 71. The first accommodating space S1 can accommodate the internal electric wire 51. On the other hand, the second accommodating space S2 can accommodate the external electric wire 52. The first accommodating space S1 and the second accommodating space S2 are formed side by side along the outer peripheral 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 peripheral surface 111 of the duct portion 11. The width dimension of each accommodating space S1, S2, i.e., the distance between each wall portion 611, 612 and the partition portion 71, is set to be slightly larger than the outer diameter of each electric wire 51, 52 accommodated in each accommodating space S1, S2.

[0027] In this way, by forming the storage spaces S1, S2 that store the multiple electric wires 51, 52 near the outer peripheral surface 111 of the duct portion 11, it is possible to prevent the multiple electric wires 51, 52 from coming into contact with other components and being damaged. Furthermore, by using the partition portion 71 as a common member that forms each of the storage spaces S1, S2, it is possible to suppress an increase in the number of components, thereby reducing costs and saving space inside the ventilation device 1. Furthermore, the distance from the electrical box 40 to the walls 611, 612 and the partition portion 71, i.e., the distance from each of the storage spaces S1, S2, is set to be shorter than the distance from the electrical box 40 to the motor 22. In this way, the electric wires 51, 52 exposed to the outside from the electrical box 40 can be guided to each of the storage spaces S1, S2 at a position as close as possible to the electrical box 40.

[0028] The main body frame 10 also has a wall-side protrusion 63 and a partition-side protrusion 73. The wall-side protrusion 63 is provided on one or both of the multiple upright portions 621, 622 and protrudes toward the partition portion 71. In this embodiment, as shown in FIG. 4 , the wall-side protrusion 63 is provided only on the first wall portion 611 side among the multiple wall portions 611, 612 sides. In other words, the wall-side protrusion 63 is provided only on the first upright portion 621 among the multiple upright portions 621, 622. The wall-side protrusion 63 is formed integrally with the first upright portion 621. The wall-side protrusion 63 protrudes in a direction that partially reduces the distance between the first wall portion 611 and the partition portion 71. The wall-side protrusion 63 protrudes from the first upright portion 621 toward the first storage space S1. The wall-side protrusion 63 may be provided only on the second upright portion 622, i.e., the second wall portion 612. The wall-side protrusion 63 is formed, for example, as a trapezoidal protrusion, but is not limited to this and may be a hook-shaped or circular protrusion. The wall-side protrusion 63 may be formed separately from the first upright portion 621.

[0029] The partition-side protrusions 73 are formed, for example, to protrude from the extending portion 72 toward the opposing wall portions 611, 612. That is, the partition-side protrusions 73 protrude in an arrow shape in a direction that partially reduces the separation distance between the partition 71 and each wall portion 611, 612. The partition-side protrusions 73 are formed integrally with the extending portion 72. The partition-side protrusions 73 protrude from the extending portion 72 toward the storage spaces S1, S2, respectively. Note that the partition-side protrusions 73 may be configured to be formed on either one of the opposing wall portions 611, 612. The partition-side protrusions 73 may also be hook-shaped or circular protrusions. The partition-side protrusions 73 may be formed separately from the extending portion 72.

[0030] The standing portions 621, 622 and the extending portion 72 have the function of guiding the electric wires 51, 52 toward the respective accommodating spaces S1, S2 when accommodating the electric wires 51, 52 in the respective accommodating spaces S1, S2. In this case, the standing portions 621, 622 and the extending portion 72 are integrally molded from synthetic resin with the outer peripheral surface 111 of the duct portion 11, and therefore can be elastically deformed around the boundary portions with the wall portions 611, 612 and the partition portion 71 as fulcrums. Therefore, by deforming the standing portions 621, 622 and the extending portion 72, the operation of accommodating the electric wires 51, 52 in the respective accommodating spaces S1, S2 becomes easier.

[0031] When the electric wires 51, 52 are accommodated in the respective storage spaces S1, S2, the upright portions 621, 622 and the extending portions 72 return to their original shapes, and the wall-side protrusions 63 and the partition-side protrusions 73 act as retainers. Thus, the electric wires 51, 52 accommodated in the respective storage spaces S1, S2 are prevented from moving out of the respective storage spaces S1, S2. In this case, the wall-side protrusions 63 and the partition-side protrusions 73 form the entrances to the storage spaces S1, S2.

[0032] As shown in FIG. 5 , the rear end of the duct portion 11 is provided with a plurality of grooves 112. Each groove 112 is provided at a position corresponding to each of the storage spaces S1 and S2. That is, the plurality of grooves 112 are arranged side by side on the outer peripheral surface 111 of the duct portion 11, with the partition portion 71 sandwiched therebetween. The grooves 112 are formed by recessing the rear end of the duct portion 11 toward the front. The grooves 112 are formed, for example, in a substantially U-shape. The electric wires 51 and 52 can be fitted into the plurality of grooves 112, respectively. That is, the electric wires 51 and 52 are held in the duct portion 11 while being pressed into the grooves 112 corresponding to the respective electric wires 51 and 52. In this case, each groove 112 forms an outlet portion of the storage spaces S1 and S2.

[0033] In this way, the internal electric wire 51 is maintained in a state of being accommodated in the first accommodating 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 in a state of being accommodated in the second accommodating space S2 by the partition-side protrusion 73 and the groove 112. Furthermore, the portions of the electric wires 51, 51 extending beyond the groove 112 can be bound together with the ground wire 53, for example, by a binding band 74.

[0034] According to the embodiment described above, the ventilation device 1 includes a main body frame 10, an impeller 21, a motor 22, and an electrical box 40. The main body frame 10 has a cylindrical duct portion 11. The impeller 21 is provided inside the duct portion 11. The motor 22 rotates the impeller 21. The electrical box 40 houses an electrical component 41 to which a plurality of electric wires 51, 52 are connected. The plurality of electric wires 51, 52 include an internal electric wire 51 connected to the motor 22 and an external electric wire 52 connected to an external component 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.

[0035] According to this, by arranging the multiple electric wires 51, 52 side by side along the outer peripheral surface 111 of the duct portion 11, it is possible to route the multiple electric wires 51, 52 together in a minimum manner while preventing the electric wires 51, 52 from contacting and being damaged by other members such as the pipe 91 provided inside the wall 90 of the building. As a result, it is possible to avoid damage to the electric wires 51, 52 when installing the ventilation device 1 and to save space inside the ventilation device 1.

[0036] The main body frame 10 has a plurality of wall portions 611, 612 that protrude at intervals from the outer peripheral surface 111 of the duct portion 11 and extend along the axial direction of the duct portion 11. Furthermore, the main body frame 10 has partition portions 71 that protrude from the outer peripheral surface 111 of the duct portion 11 at positions between the plurality of wall portions 611, 612, extend along the axial direction of the duct portion 11, and form, between the opposing wall portions 611, 612, storage spaces S1, S2 that can store each of the electric wires 51, 52, respectively.

[0037] This allows the electric wires 51, 52 to be accommodated in the accommodation spaces S1, S2 formed between the plurality of wall portions 611, 612 and the partition portion 71, respectively. This effectively prevents the plurality of electric wires 51, 52 from interfering with other components. Furthermore, since there is no need to provide separate components for accommodating the plurality of electric wires 51, 52, the number of components can be reduced, thereby reducing manufacturing costs. As a result, the space inside the ventilation device 1 can be further reduced, and the plurality of electric wires 51, 52 can be accommodated with a simple configuration.

[0038] The main body frame 10 further has protrusions 63, 73. The protrusions 63, 73 are provided on either or both of the wall portions 611, 612 side and the partition portion 71 side, and protrude toward the storage spaces S1, S2. This makes it possible for the protrusions 63, 73 to prevent the electric wires 51, 52 from falling out of the storage spaces S1, S2. This allows the electric wires 51, 52 to be held stably.

[0039] The duct portion 11, the walls 611, 612, the partition portion 71, and the protrusions 63, 73 are integrally molded from synthetic resin. By integrally molding the members that form the storage spaces S1, S2 that store the electric wires 51, 52 from synthetic resin, the number of parts can be reduced, which reduces manufacturing costs, and the workability of assembling the ventilator 1 can be improved.

[0040] By forming the height of each wall portion 611, 612 and the partition portion 71 to be greater than the outer diameter of each electric wire 51, 52, the upright portions 621, 622 and the extending portion 72 can be omitted. Although one embodiment of the present invention has been described above, this embodiment is presented by way of example and is not intended to limit the scope of the invention. This novel embodiment can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. This embodiment and its modifications are included within the scope and spirit of the invention, and are also included in the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0041] In the drawings, 1 indicates a ventilation device, 10 indicates a main body frame, 11 indicates a duct portion, 111 indicates an outer surface, 21 indicates an impeller, 22 indicates a motor, 40 indicates an electrical box, 41 indicates electrical components, 51 indicates an internal electric wire, 52 indicates an external electric wire, 611 and 612 indicate wall portions, 63 and 73 indicate protrusions, 71 indicates a partition portion, and S1 and S2 indicate storage spaces.

Claims

1. A ventilation device for ventilating outdoor air and indoor air, a main body frame having a cylindrical duct portion; an impeller provided in the duct portion; a motor that rotates the impeller; an electrical box that houses electrical components to which a plurality of electric wires are connected; The plurality of electric wires include an internal electric wire connected to the motor and an external electric wire extending to the outside of the ventilation device, The inner electric wire and the outer electric wire are arranged side by side along the outer circumferential surface of the duct portion. Ventilation equipment.

2. The main body frame has a plurality of wall portions located at intervals on the outer peripheral surface of the duct portion and extending along the axial direction of the duct portion, and partition portions located between the plurality of wall portions and opposing wall portions to form storage spaces capable of storing each of the electric wires.

10. The ventilation device of claim 1.

3. The wall portion and / or the partition portion further have a protrusion that protrudes toward the storage space.

3. The ventilation device of claim 2.

4. The duct portion, the wall portion, the partition portion, and the protrusion portion are integrally molded from a synthetic resin.

4. The ventilation device of claim 3.

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