JP6560433B1 - Fan unit for clothes with fan - Google Patents

Abstract

The present invention provides a fan unit for a garment with a fan that can ensure both an air volume and a wind direction suitable for cooling without complicating the structure. An axial fan and casings (12, 13) for housing the axial fan are provided. The casing (12) is provided with an intake port on the front side for taking in outside air, and the casing (13) is on the back side for exhausting outside air. An exhaust port 19 is provided, and the exhaust port 19 is formed by a gap between a plurality of ribs 18 extending radially from the rotation center line 22 of the axial fan toward the side surface of the casing 13. It has an inclined surface 23 that is inclined with respect to a surface orthogonal to the center line 22, and the outside air that flows parallel to the rotation center line 22 by the rotation of the axial fan is reflected by the inclined surface 23, thereby taking in the outside air. The air is exhausted in a flow that is inclined with respect to the rotation center line 22 and diffused to the outside of the casing 13. [Selection] Figure 8

Description

  The present invention relates to a fan unit for a garment with a fan used for a garment with a fan that takes in outside air with a fan.

  In recent years, clothes with a fan have come to be used as work clothes at work sites in order to prevent heat stroke and improve work efficiency in summer. The clothes with a fan cool the body by flowing outside air taken in by rotation of the fan between the body and the clothes. Usually, a fan called an axial flow fan has been used for a fan-equipped garment. For example, in the cooling garment described in Patent Document 1, an axial fan is used. In the axial fan, the wind goes straight in the direction of the rotation axis of the fan (see FIG. 2 of Patent Document 1), and a large amount of air is blown. Can be secured.

  On the other hand, in the cooling garment described in Patent Document 2, a fan called a centrifugal fan (referred to as “side flow fan” in Patent Document 2) is used. The centrifugal fan is a fan that sends out wind in the centrifugal direction, and air taken in from the front surface of the fan is sent out in the side surface direction (see FIG. 4 of Patent Document 2). For this reason, when a centrifugal fan is used, the wind travels parallel to the body, that is, along the body, so the centrifugal fan is suitable as a fan for clothes with a fan for cooling the body. There is one side.

Japanese Patent No. 5958923 JP 2005-54299 A

  Since the axial fan used in the cooling garment described in Patent Document 1 can secure a large amount of air flow, it is suitable for uniformly circulating the wind in the cooling garment. However, since the wind immediately after passing through the fan concentrates and cools in a limited area, the wind goes straight toward the body and is reflected by the body, which is disadvantageous for the diffusion and circulation of the wind. Further, since the reflected wind hits the fan directly, the rotation of the fan is hindered and the rotation efficiency is lowered.

  On the other hand, in the centrifugal fan used in the cooling garment described in Patent Document 2, since the air taken in from the front of the fan is sent out in the side direction as described above, it reflects or reflects wind like an axial fan. Although there was no problem due to the direct blow of the wind fan, there was a problem that the air volume was less than that of the axial fan. For this reason, the centrifugal fan cannot fully take advantage of the cooling advantageous effect that the wind travels along the body.

  The present invention solves the conventional problems as described above, and provides a fan unit for a garment with a fan that achieves both ensuring the air volume and ensuring a wind direction suitable for cooling without complicating the structure. For the purpose.

In order to achieve the above object, a fan unit for clothes with a fan according to the present invention is a fan unit for clothes with a fan used for clothes with a fan, and an axial flow fan that flows captured outside air in parallel to a rotation center line. A casing that accommodates the axial fan, the casing is provided with an intake port on the front side that takes in outside air, and an exhaust port is provided on the back side that exhausts the outside air, It is formed by a gap between a plurality of ribs extending radially from the rotation center line toward the side surface of the casing, and the rib has a band-shaped surface, and the band-shaped surface is the rotation center line Outside air flowing parallel to the rotation center line by rotation of the axial fan and reflected by the inclined surface to be taken into the casing. , Inclined with respect to the rotation center line, and evacuated by the flow of diffused outside of the casing, and when the fan with the garment person wearing the Exhaust outside air, the person's body side The ratio of reflection in the vertical direction toward the axial fan is reduced .

  According to the fan unit for clothes with a fan of the present invention, even if an axial fan is used, an inclined diffusion flow that is inclined with respect to the rotation center line of the fan and diffused to the outside of the casing is exhausted. In addition to making it easier for outside air to flow along the body and efficiently using the strength of the blowing power of the axial fan to improve the air circulation performance in the clothes, it is vertically directed toward the fan. The ratio of reflection is also reduced, and a reduction in fan rotation efficiency can be prevented. This effect is due to the fact that the ribs of the casing are provided with inclined surfaces, and the fan unit according to the present invention achieves both ensuring the air volume and ensuring the air direction suitable for cooling without complicating the structure. Can be made.

  The fan unit for clothes with a fan of the present invention preferably has the following configurations. It is preferable that the plurality of ribs bend and extend from the rotation center line toward the side surface of the casing. This configuration is advantageous for increasing the degree of diffusion of the inclined diffusion flow.

  It is preferable that a protrusion for forming a space between the body and the casing when the garment with a fan is worn on the back side of the casing. According to this configuration, the protruding portion serves as a spacer for forming a space between the body and the casing, and helps to form an air path between the clothing and the body.

The inclination angle of the inclined surface, of the angle formed between the perpendicular to the rotational axis plane as the inclined surface, an acute angle portion is preferably in the range of 70 degrees from 10 degrees. According to this configuration, it is advantageous for ensuring the inclination of the inclined diffusion flow and the degree of diffusion.

  The effect of the present invention is as described above, and even if an axial flow fan is used, the inclined diffusion flow of the flow that is inclined with respect to the rotation center line of the fan and diffused outside the casing is exhausted. In addition to being able to improve the air circulation performance in clothes by efficiently utilizing the strength of the blowing power of the axial flow fan, the ratio of the reflection in the vertical direction toward the fan It is also possible to prevent the decrease in fan rotation efficiency. This effect is due to the fact that the ribs of the casing are provided with inclined surfaces, and the fan unit according to the present invention achieves both ensuring the air volume and ensuring the air direction suitable for cooling without complicating the structure. Can be made.

The front view of the clothes with a fan using the fan unit concerning one embodiment of the present invention. The back view of the clothes with a fan shown in FIG. The external appearance perspective view of the front side of the fan unit which concerns on one Embodiment of this invention, and the external appearance perspective view of a battery. The external appearance perspective view of the back side of the fan unit which concerns on one Embodiment of this invention. The disassembled perspective view of the fan unit shown in FIG. The external appearance perspective view of the assembly of the back side casing and projection part concerning one embodiment of the present invention. Sectional drawing in the BB line of FIG. The external appearance perspective view which shows the flow of the air which passes the fan unit which concerns on one Embodiment of this invention. Sectional drawing which shows the state which the person wore the clothing | wear with which the fan unit which concerns on one Embodiment of this invention was mounted | worn. Sectional drawing which shows the state which the person wore the clothing | wear with which the fan unit which concerns on the comparative example 1 was mounted | worn. Sectional drawing which shows the state which the person wore the clothes equipped with the fan unit which concerns on the comparative example 2. FIG.

  The present invention relates to a fan unit used for clothes with a fan. If the fan unit according to the present invention is attached to clothes and a battery as a power source of the fan unit is stored in the clothes, the present invention can be used as clothes with a fan. Clothes with a fan take in outside air with a fan and cool the body, and are suitable as work clothes for work under high temperatures such as construction work in the summer, work in the factory, outdoor inspection work, and farm work.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a fan-equipped garment (hereinafter simply referred to as “clothing”) 1 using a fan unit 10 (see FIGS. 2 and 3) according to the present invention, and FIG. is there. In the present embodiment, clothes are described as outerwear, but the clothes are not limited to this and may be pants.

  In FIG. 1, a garment 1 has a sleeve 3 attached to a front body 2, and can be dressed and undressed by opening and closing a front-view fastener 6 attached from a collar 4 to a hem 5. In FIG. 2, a fan unit 10 is attached to the back body 9, and the fan unit 10 is attached to a fan mounting opening provided in the back body 9.

  FIG. 3 shows an external perspective view of the front side of the fan unit 10 and also shows an external perspective view of the battery 30 connected to the fan unit 10. The fan unit 10 has a fan 20 (see FIG. 5) housed in a casing 11 and includes a motor 8 (see FIG. 5) that rotates the fan 20. As will be described later, the casing 11 includes a front side casing 12 and a back side casing 13, and the front side casing 12 forms an intake port 15 with a gap between the ribs 14.

  One end of a cable 31 is connected to the motor 8 (see FIG. 5), and a plug 32 is attached to the other end of the cable 31, and the plug 32 is connected to a jack 33 of the battery 30. The battery 30 is a power source for the motor 8 and has an operation unit 34 on the upper surface. By operating the operation unit 34, power ON / OFF and output adjustment can be performed. The battery 30 shown in FIG. 3 is an example, and may be any battery that functions as a power source for the motor 8 and is small enough to be housed in the clothing 1 (see FIG. 1).

  The fan unit 10 is attached to the outer garment 1 by fitting the fan unit 10 into the opening provided in the garment 1 from the outside of the garment 1 from the back side casing 13 side and projecting from the back side of the garment 1. The thread forming part 36 of the ring 7 may be screwed into the thread forming part 35 and tightened (see FIG. 9).

  4 shows an external perspective view of the back side of the fan unit 1, and FIG. 5 shows an exploded perspective view of the fan unit 1 shown in FIG. In FIG. 4, a protrusion 16 is attached to the rear casing 13. As shown in FIG. 5, the motor 8 is built in the protruding portion 16, and the convex portion 17 integrated with the rear casing 13 and the concave portion 21 formed in the fan 20 are fitted to each other so that the fan 20 is attached to the rear casing 13. Installed. 4 and 5, the rear casing 13 also has a plurality of ribs 18 extending radially from the central portion toward the side surface, and an exhaust port 19 is formed by a gap between the plurality of ribs 18.

  FIG. 6 is an external perspective view of the assembly of the back side casing 13 and the protrusion 16. For convenience of explanation, this figure shows a plane perpendicular to the rotation center line 22 of the fan 20 (see FIG. 5) as a virtual plane 24 with a two-dot chain line. The rib 18 has a belt-like surface, and the belt-like surface is an inclined surface 23 that is inclined with respect to a surface 24 orthogonal to the rotation center line 22. FIG. 7 is a cross-sectional view taken along line BB in FIG. 6 and is a cross-sectional view of one rib 18. This figure is a cross section of the rib 18 cut in the direction of the rotation center line 22. The inclined surface 23 is inclined at an acute angle α with the surface 24 orthogonal to the rotation center line 22. As shown in FIG. 7, inclined surfaces 23 are formed on both surfaces of the rib 18, and the inclined surfaces 23 are formed on the inner side (fan 20 side) and the outer side of the rib 18.

  FIG. 8 is a perspective view showing the flow of air passing through the fan unit 10. As the fan 20 (see FIG. 5) rotates, the outside air is sucked and the outside air is taken into the fan unit 10 (arrow a). The taken-in outside air is sucked into the fan unit 10 through the intake port 15 (see FIG. 5) of the front casing 12 and exhausted to the outside of the fan unit 10 from the exhaust port 19 of the rear casing 13 (arrow c). ).

  In the present embodiment, the fan 20 uses an axial fan, and the rotation of the fan 20 causes the flow of outside air passing through the fan 20 to be parallel to the rotation center line 22 of the fan 20 (FIGS. 7 and 9). Arrow b). Moreover, the rib 18 of the back side casing 13 has the inclined surface 23 (refer FIGS. 6-8). According to this configuration, in FIG. 7, the outside air that passes through the fan unit 10 in parallel with the rotation center line 22 (arrow b) is reflected by the inclined surface 23 inside the rib 18 and exhausted (arrow c). For this reason, as shown in FIG. 8, the flow of outside air when exhausting from the fan unit 10 does not flow linearly along the rotation center line 22 of the fan 20, but on the rotation center line 22 of the fan 20. On the other hand, the flow is inclined and diffused to the outside of the back casing 13. In this specification, for the sake of convenience, such a flow of outside air is referred to as an inclined diffusion flow.

  FIG. 9 is a cross-sectional view showing a state in which a person wears the garment 1 equipped with the fan unit 10 according to the present embodiment. This figure corresponds to a cross-sectional view taken along line AA in FIG. 2, where the space 26 is on the outside air side, the space 27 is a space in the garment 1, and is a space between the garment 1 and the body 30. The fan unit 10 has a protrusion 16, and this protrusion 16 serves as a spacer for forming a space between the body 30 and the back casing 13, and between the clothes 1 and the body 30. It helps to form the air path.

  The rotation of the fan 20 sucks outside air (arrow a), the sucked outside air passes through the fan (arrow b), and the outside air taken into the fan unit 10 is reflected by the inclined surface 23 inside the rib 18. Then (arrow c in FIG. 7) becomes an inclined diffusion flow and is exhausted to the outside of the fan unit 10 (arrow c). Thereafter, the inclined diffusion flow flows along the body 30 (arrow d), and the outside air circulates in the space in the clothes 1 and the body 30 is cooled.

  In the present embodiment, as described above, the fan 20 uses an axial fan, and the flow of outside air passing through the fan 20 becomes a flow parallel to the rotation center line 22 of the fan 20 (arrow b). That is, the flow of the outside air is a flow in a direction perpendicular to the plane 24 (see FIG. 6) orthogonal to the rotation center line 22, and in this specification, for the sake of convenience, such an outside air flow is referred to as a vertical flow. . The fan unit 10 according to the present embodiment is characterized in that the outside air is not exhausted as a vertical flow but is exhausted as an inclined diffusion flow.

  In FIG. 8, the plurality of ribs 18 of the back side casing 13 extend from the rotation center line 22 toward the side surface of the back side casing 13, but may extend linearly. According to the experiments by the inventors of the present application, it was confirmed that the degree of diffusion of the inclined diffusion flow is increased when the rib is curved.

  Further, according to experiments by the inventors of the present application, it was confirmed that the inclination angle α of the inclined surface 23 is preferably in the range of 10 degrees to 70 degrees in FIG. When the inclination angle α is less than 10 degrees, the inclined surface 23 approaches a parallel surface, and there is a high possibility that the inclined surface 23 becomes resistance to the exhaust flow. When the inclination angle α exceeds 70 degrees, the inclined surface 23 becomes vertical. This is because the inclination of the inclined diffusion flow and the degree of diffusion decrease as it approaches the surface.

  Further, in FIG. 8, an inclined surface 25 is provided over the entire periphery of the inner peripheral surface of the back side casing 13 at the end on the exhaust side. The inclined surface 25 is inclined so as to move away from the rotation center line 22 toward the rear (exhaust side of outside air). According to this configuration, it is advantageous to increase the degree of diffusion of the inclined diffusion flow, but a configuration in which the inclined surface 25 is omitted may be used.

  Hereinafter, the effect of the fan unit 10 according to the present embodiment will be described in comparison with a comparative example. FIG. 10 is a cross-sectional view of the fan unit 40 according to the comparative example 1, and shows a state in which a person wears the clothing 41 with the fan unit 40 attached. The fan unit 40 has a rib 44 for protection purpose formed on the back side of the casing 43. For the convenience of illustration, the rib 44 is shown in a simplified manner.

  In the fan unit 40 according to the comparative example 1, the fan 42 is an axial fan similarly to the present embodiment, but the configuration on the back side of the casing 43 is different from the present embodiment. That is, the fan unit 10 according to the present embodiment has an exhaust port formed between ribs having inclined surfaces on the back side of the casing, but the fan unit 40 according to Comparative Example 1 has ribs having such inclined surfaces. Is not provided.

  That is, the fan unit 40 has only a protective rib 44 formed on the back side of the casing 43, and this rib 44 does not exhibit an effect of changing the flow of wind. For this reason, in the fan unit 40 according to the comparative example 1, the outside air is sucked by the rotation of the fan 42 that is an axial fan (arrow a), and the sucked outside air passes through the fan 40 (arrow b). The flow of outside air is the same as that of the fan unit 10 in FIG. 9, but in the fan unit 40 in FIG. 10, the outside air to be exhausted is not an inclined diffusion flow but a vertical flow (arrow c).

  In FIG. 10, the vertical flow hits the body and thereafter flows along the body (arrow d). Since the axial fan has a strong blowing force and a large air volume, the outside air easily circulates uniformly in the garment 41, which is advantageous for cooling the entire garment 41. On the other hand, since the vertical flow hits the body 30 perpendicularly, outside air concentrates on a limited narrow area of the body 30 and cools a specific part more than necessary.

  Further, the vertical flow that hits the body 30 in a vertical direction is also reflected by the body in the vertical direction (arrow e in FIG. 10), which is disadvantageous for efficient circulation of the outside air. Furthermore, since the outside air reflected in the vertical direction by the body 30 faces the fan 42 and directly hits the fan 42, this becomes a rotation load of the fan 42 and the rotation efficiency decreases.

  That is, the fan unit 40 according to the comparative example 1 is advantageous in securing the air volume by using the axial flow fan, but the vertical flow is exhausted from the fan unit 40, so that the blowing power is strong. Cannot be used efficiently, and the rotational efficiency of the fan 42 is also reduced.

  In contrast, in the fan unit 10 according to the present embodiment, the inclined diffusion flow is exhausted from the fan unit 10, so that outside air easily flows along the body 30, and the strength of the air blowing force by the axial flow fan is efficiently increased. In addition to improving the air circulation performance in the garment 1, the rate of reflection in the vertical direction toward the fan 20 is also reduced, and the reduction in fan rotation efficiency can be prevented.

  FIG. 11 is a cross-sectional view of the fan unit 50 according to the second comparative example, and shows a state in which a person wears a garment 51 equipped with the fan unit 50. The fan 52 used in the fan unit 50 according to the comparative example 2 is not an axial fan but a centrifugal fan. Centrifugal fans differ from axial fans in that outside air is exhausted in a direction perpendicular to the rotation center line of the motor.

  For this reason, in the fan unit 50 according to the comparative example 2, the exhaust port 54 is provided on the side surface of the casing 53, and the outside air is not exhausted from the back side, so no exhaust port is provided on the back side. For convenience, the flow of outside air in the direction orthogonal to the rotation center line of the motor is referred to as parallel flow.

  In FIG. 11, the outside air is sucked by the rotation of the fan 52 (arrow a), the outside air passing through the fan 52 becomes a parallel flow and exhausted from the fan unit 50 (arrow b), and the parallel flow flows along the body 30 as it is. To go. That is, the outside air immediately after passing through the fan 52 travels in parallel to the body 30 without colliding with the body 30, so that a specific part is not cooled more than necessary as in the vertical flow, and the outside air is on the fan 52 side. Therefore, the rotational efficiency of the fan 52 is not reduced. However, the centrifugal fan has a weaker blowing power than the axial fan, and the fan unit 50 according to the comparative example 2 is necessarily advantageous for cooling the entire body in the garment 1 as compared with the fan unit 40 according to the comparative example 1. I can't say that.

  On the other hand, the fan unit 10 according to the present embodiment exhausts the inclined diffusion flow even if an axial fan is used, so that the outside air easily flows along the body 30 as described above, and is sent by the axial fan. In addition to being able to efficiently use the strength of wind power to improve the air circulation performance in the garment 1, the rate of reflection in the vertical direction toward the fan 20 is also reduced, and the rotational efficiency of the fan is also reduced. Can be prevented.

  This effect is due to the provision of the inclined surface 25 on the rib 18 of the rear casing 13, and the fan unit 10 according to this embodiment is a fan unit that exhausts a vertical flow without complicating the structure. This is a fan unit that solves the problem of the fan unit that exhausts the parallel flow and secures the air volume and the wind direction suitable for cooling.

DESCRIPTION OF SYMBOLS 1 Clothes with a fan 10 Fan unit 11 Casing 12 Front side casing 13 Back side casing 16 Protrusion part 18 Rib 19 Exhaust port 20 Fan 22 Rotation center line 23 Inclined surface 24 Surface orthogonal to the rotation center line 25 Inclined surface 30 Body

Claims (4)

A fan unit for clothes with a fan used for clothes with a fan,
An axial fan that flows the taken-in outside air parallel to the rotation center line;
A casing that houses the axial fan,
The casing is provided with an intake port on the front side that takes in outside air, and an exhaust port is provided on the back side that exhausts outside air,
The exhaust port is formed by a gap between a plurality of ribs extending radially from the rotation center line toward the side surface of the casing,
The rib has a band-shaped surface;
The belt-like surface is an inclined surface inclined with respect to a surface orthogonal to the rotation center line,
The outside air flowing parallel to the rotation center line by the rotation of the axial fan is reflected by the inclined surface, and the outside air taken into the casing is inclined with respect to the rotation center line and outside the casing. Exhaust in a diffuse flow ,
When the garment with a fan is worn by a person, the proportion of the exhausted outside air that is reflected in the vertical direction from the person's body side toward the axial fan is reduced. Fan unit.   The fan unit for clothes with a fan according to claim 1, wherein the plurality of ribs are curvedly extended from the rotation center line toward a side surface of the casing.   3. The fan-equipped garment according to claim 1, further comprising: a protrusion for forming a space between the body and the casing when the garment with the fan is worn on a back side of the casing. Fan unit. The inclination angle of the inclined surface is an angle formed by a surface orthogonal to the rotation axis and the inclined surface, and an acute angle portion is within a range of 10 degrees to 70 degrees. Fan unit for clothes with fan.

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