JP2007182816A - Ceiling fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling fan arranged on a ceiling, used for reducing a sensible temperature by direct wind and circulating air in a room, having sufficient air sending efficiency, and extending the reaching range of an air blast. <P>SOLUTION: This ceiling fan is provided with two or more blade plates 8 fixed on an electric motor 4 or a body 2 through arm parts 7 so as to simultaneously generate outside circulating air and inside circulating air. Thereby, the ceiling fan 1 is provided which has sufficient air sending efficiency, extends the reaching range of the air blast, and increases wind speed even in the vicinity immediately under the center part of the ceiling fan 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ceiling fan that is installed on a ceiling and is used for reducing the temperature of the sensible temperature caused by direct wind or circulating indoor air.

  Conventionally, this type of ceiling fan is known to be fixed to a rotating body that is rotated by an electric motor via a connecting member that supports one end of a long blade blade (see, for example, Patent Document 1).

  Hereinafter, the ceiling fan will be described with reference to FIG.

  As shown in the figure, the overall structure of the ceiling fan 101 is composed of a canopy (upper cover) 102, an intermediate cover 103, an outer rotating body 104 and a lower cover 105 of an electric motor, and a blade 107 attached to a holder 106 of the outer rotating body 104. The simple mounting bracket 108 inside the canopy 102 is screwed to the ceiling 109 and the ceiling fan 101 is suspended.

In the above configuration, the blades 107 are attached at a predetermined angle in the circumferential direction around the rotation axis. When the blades 107 are rotated by the electric motor, the blades 107 are stepped up by the pressure increasing action of the blades 107 in the forward direction. Air that passes between the ceiling 109 and the blade 107 from the outer periphery is blown downward, and in reverse rotation, the air passes from the lower portion of the blade 107 to the outer periphery of the blade 107 through the space between the ceiling 109 and the blade 107, both of which circulate outside. Wind 110 is generated. Therefore, it is used in the forward direction when cool in the vicinity of the ceiling fan 101 mainly in the summer, and vice versa when the air circulation in the whole room is promoted so that the wind is not felt by the direct wind mainly in the winter. Used in rotation.
Japanese Patent Laid-Open No. 11-210678

  In such a conventional ceiling fan, since the space between the blade 107 and the ceiling 109 is narrow, the air passing between the ceiling 109 and the blade 107 from the outer periphery of the blade 107 reaches the inner periphery of the blade 107 during forward rotation. It is difficult to perform the air blowing work mainly in the outer peripheral side region of the blade 107, so the air blowing efficiency is poor, the reachable range of the air blowing is narrow, and the outside circulation returns from the outer peripheral side region of the blade 107 to the outer periphery of the blade 107. Since the wind 110 is generated, there is a problem that the wind speed is low near the center of the ceiling fan 101. When rotating in the forward direction, the air blow works also in the inner peripheral side region of the blade 107, and the blowing efficiency is good. The range is wide, and it is required to increase the wind speed even near the center of the ceiling fan 101.

  In addition, since the distance between the blade 107 and the ceiling 109 is narrow, the air sent between the ceiling 109 and the blade 107 from below the blade 107 in the inner peripheral region of the blade 107 during reverse rotation is discharged to the outer periphery of the blade 107. Therefore, the amount of work in the inner peripheral region of the blade 107 is reduced, the blowing efficiency is lowered and the reachable range of the blowing is narrowed, and the air sent between the ceiling 109 and the blade 107 from below the blade 107 is once Since it blows to the outer peripheral side after hitting the ceiling surface, there is a problem that the circulating air speed becomes low and the reachable range of the airflow becomes narrow, and the airflow efficiency is also achieved by the work of airflow even in the inner peripheral side region of the blade 107 at the time of reverse rotation Therefore, the wind speed of the circulating air blown from the blade 107 to the outer periphery is high, and it is required to widen the reach range of the air blow.

  In addition, there is a problem that dust or the like accumulated in the room by air blown from the ceiling fan 101 is scattered and pollutes the indoor air, and it is required to add a function for improving the indoor air quality. .

  The present invention solves such a conventional problem, and also works on the inner peripheral side region of the slats to perform blowing work, has high blowing efficiency, has a wide range of blowing, and has a ceiling fan when rotating in the forward direction. Provided is a ceiling fan that can increase the wind speed even near the center, can increase the speed of circulating air blown from the blades to the outer periphery during reverse rotation, and can improve indoor air quality The purpose is that.

  In order to achieve the above object, the ceiling fan of the present invention has an attaching means for fixing one end of the rotating shaft to the ceiling surface side, an electric motor rotating around the rotating shaft, and a main body containing all or part of the electric motor. The ceiling fan is provided with a plurality of blades fixed to the motor or the main body via the arm portion, and the blades rotate together with the motor and blows air. The ceiling fan is characterized in that the circulating air and the inner circulating air generated when the air blown from the blade plate is directed toward the inner peripheral side are generated at the same time.

  By this means, a ceiling fan can be obtained that can work even in the inner peripheral region of the slats and has good blowing efficiency, has a wide range of air blowing, and can increase the wind speed even near the center of the ceiling fan. It is done.

  Another means is a ceiling fan in which the joint between the arm portion and the blade is at the boundary between the inner peripheral region and the outer peripheral region of the blade.

  By this means, a ceiling fan can be obtained that can work even in the inner peripheral region of the slats and has good blowing efficiency, has a wide range of air blowing, and can increase the wind speed even near the center of the ceiling fan. It is done.

  Another means is a ceiling fan in which the blade is divided at the joint, and the inner peripheral region and the outer peripheral region are constituted by the inner peripheral blade plate and the outer peripheral blade plate.

  By this means, it is possible to easily obtain the optimum shape for the flow in the inner peripheral area, work in the inner peripheral area of the slats to improve the blowing efficiency, wide the reach range of the blowing, and the ceiling fan A ceiling fan can be obtained that can increase the wind speed even immediately below the center of the room.

  Another means is a ceiling fan in which the blades are located above the lowest point of the main body.

  By this means, without increasing the product height of the entire ceiling fan, it is possible to work on the inner peripheral side region of the slats to improve the blowing efficiency and widen the reach of the blowing fan. A ceiling fan that can increase the wind speed even near the center is obtained.

  Another means is a ceiling fan in which the vane plate or the inner peripheral region is located below the lowest point of the main body, and the inner peripheral end of the inner peripheral region is located inside the outer periphery of the main body. .

  By this means, the radial length of the inner peripheral region can be increased, the air blowing efficiency of the inner peripheral region can be improved, and the wind speed can be increased even immediately below the center of the ceiling fan. A ceiling fan is obtained.

  Another means is a ceiling fan having a shape in which the inner peripheral region generates a flow in the centrifugal direction by rotation about the rotation axis.

  By this means, it is possible to obtain a ceiling fan that can blow air over a wide range when rotating in the forward direction and can improve the circulating wind speed during reverse rotation.

  Another means is a ceiling fan that can change the attachment angle of the blades with the joint as a fulcrum.

  By this means, a ceiling fan capable of changing the wind speed and reachable range is obtained.

  The other means includes an attaching means for fixing one end of the rotating shaft to the ceiling surface side, an electric motor that rotates around the rotating shaft, a main body that contains all or part of the electric motor, and an arm portion on the electric motor via an arm portion. It is a ceiling fan that has a fixed blade, and the blade rotates together with the motor and blows air. Part or all of the blade is composed of an upper plate and a lower plate. It is a ceiling fan with an air passage space with an opening in each.

  By this means, the air on the inner peripheral side can be blown out to the outer peripheral side through the air passage space, the inner circulation wind is generated, and the air is blown even in the inner peripheral side region of the periphery and the air blowing efficiency is improved. Thus, a ceiling fan capable of widening the reach range of the blast is obtained.

  Another means is a ceiling fan in which the inner diameter Dti of the upper plate of the slats is larger than the inner diameter Dbi of the lower plate.

  By this means, air on the inner peripheral side can easily flow into the inner opening during reverse rotation, and can be blown out to the outer peripheral side through the air passage space, and the wind speed of the circulating air blown from the blades to the outer periphery can be increased. A ceiling fan that can be used.

  Another means is a ceiling fan in which the inner diameter Dti of the upper plate of the slats is smaller than the inner diameter Dbi of the lower plate.

  By this means, the air on the inner peripheral side can easily flow into the inner opening when rotating in the forward direction, and can be blown out to the outer peripheral side through the air passage space. A ceiling fan is obtained that has good blowing efficiency and can widen the reach of the blowing.

  Another means is that the upper plate of the slats is fixed to the electric motor via an arm part, and the joint between the arm part and the slats is a ceiling fan at the boundary between the inner peripheral side region and the outer peripheral side region of the slats. It is a thing.

  By this means, the air blowing work is performed even in the inner peripheral side region of the slats, the air blowing efficiency is good, the reachable range of the air blowing can be widened, and the wind speed can also be increased near the central portion of the ceiling fan. A ceiling fan is obtained.

  Another means is a ceiling fan having an air quality improvement function in the air passage space of the slats.

  By this means, it is possible to obtain a ceiling fan that can improve indoor air that is contaminated by scattering of dust and the like due to the operation of the ceiling fan.

  Another means is a ceiling fan whose air quality improvement function is dust collection by a filter.

  By this means, it is possible to obtain a ceiling fan that can be improved by collecting indoor air, which is contaminated by scattering of dust and the like by the operation of the ceiling fan, with a filter.

  The other means is a ceiling fan whose air quality improving function is aromatic.

  By this means, it is possible to obtain a ceiling fan that can improve unpleasant odor by aroma the indoor air polluted with odor due to scattering of dust and the like by the operation of the ceiling fan.

  According to the present invention, the air blowing work is good even in the inner peripheral side region of the slats, the air blowing efficiency is good, the air reaching range is wide, and the wind speed is increased near the center of the ceiling fan when rotating in the forward direction. Thus, it is possible to provide a ceiling fan that can increase the speed of the circulating air blown from the blades to the outer periphery during reverse rotation and improve the indoor air quality.

  According to the first aspect of the present invention, there is provided an attaching means for fixing one end of the rotating shaft to the ceiling surface side, an electric motor rotating around the rotating shaft, a main body containing all or part of the electric motor, an electric motor or A ceiling fan that includes a plurality of blades fixed to the main body via the arm portion, and the blades rotate together with the electric motor and blows air. The ceiling fan is characterized in that the inner circulating air generated by the air flow from the blades toward the inner peripheral side is generated at the same time, and the inner circulating air is generated. Thus, the air blowing efficiency is good, the reachable range of the air blowing can be widened, and the wind speed can be increased even near the central portion of the ceiling fan.

  In addition, the joint between the arm part and the blade is a ceiling fan between the inner peripheral region and the outer peripheral region of the blade, and in the inner peripheral region of the blade near the center of the ceiling fan. By generating the inner circulating air, the air blowing work is also performed in the inner peripheral side region of the slats, so that the air blowing efficiency is good, the reachable range of the air blowing can be widened, even near the central part of the ceiling fan It has the effect of increasing the wind speed.

  In addition, the wing plate is divided at the joint portion, and the inner peripheral side region and the outer peripheral side region are the ceiling fan configured by the inner peripheral side slat plate and the outer peripheral side slat plate, and the inner peripheral side region and the outer peripheral side Since the area is not integrated, the inner peripheral area can be made into an optimum shape for the inner circulating wind, and the outer peripheral area can be made into an optimum shape for the outer circulating wind. And the wind speed can be increased even near the center of the ceiling fan.

  In addition, the fan is a ceiling fan located above the lowest point of the main body, and without increasing the overall product height of the ceiling fan, near the center of the ceiling fan in the inner peripheral area of the blade By generating the internal circulating air at the fan, air blowing work is performed even in the inner peripheral area of the slats, so the air blowing efficiency is good, the air reaching range can be widened, and the vicinity of the central part of the ceiling fan But it has the effect of increasing the wind speed.

  In addition, the vane or the inner peripheral area is located below the lowest point of the main body, and the inner peripheral end of the inner peripheral area is a ceiling fan positioned on the inner side of the outer periphery of the main body. It has the effect that the radial direction length of the region can be increased, and the blowing efficiency of the inner peripheral region can be improved.

  In addition, the inner peripheral area is a ceiling fan that has a shape that generates a flow in the centrifugal direction by rotation about the rotation axis. When rotating in the forward direction, the inner peripheral area is centrifuged from the inner peripheral area to the outer peripheral area. Since the flow in the direction is transmitted and the centrifugal direction wind speed of the air blown from the outer peripheral side region can be increased, the air can be blown over a wide range, and the circulating wind speed blown out to the outer peripheral side during reverse rotation can be improved. Have.

  In addition, it is a ceiling fan that can change the mounting angle of the slats with the joint as a fulcrum, and by changing the mounting angle in the circumferential direction and the radial direction of the slats, the size of the room can be changed In addition, the wind speed and reach can be changed.

  Also, an attachment means for fixing one end of the rotating shaft to the ceiling surface side, an electric motor rotating around the rotating shaft, a main body containing all or part of the electric motor, and a blade fixed to the electric motor via an arm portion A ceiling fan that is equipped with a plate and rotates with the motor and the blades rotate to blow air.Part or all of the blades are composed of an upper plate and a lower plate, with openings on the inner and outer sides of the blades. It is a ceiling fan with an air passage space, and the air on the inner peripheral side can blow out to the outer peripheral side through the air passage space, and it blows by blowing work also in the inner peripheral side region of the slats It has high efficiency, can widen the reach of the air blow, and can increase the wind speed even near the center of the ceiling fan.

  Further, the inner diameter Dti of the upper plate of the vane plate is a ceiling fan that is larger than the inner diameter Dbi of the lower plate, and the air on the inner peripheral side easily flows into the inner opening during reverse rotation and passes through the air passage space. Thus, the air can be blown to the outer peripheral side, and the wind speed of the circulating air blown from the blade to the outer periphery can be increased.

  Moreover, the inner diameter Dti of the upper plate of the vane plate is a ceiling fan that is smaller than the inner diameter Dbi of the lower plate, and the air on the inner peripheral side easily flows into the inner opening when rotating in the forward direction, The air can be blown out to the outer peripheral side, and air blowing work can be performed even in the inner peripheral side region of the slats, so that the air blowing efficiency is good and the air reaching range can be widened.

  In addition, the upper plate of the slats is fixed to the electric motor via the arm part, and the joint between the arm part and the slats is a ceiling fan at the boundary between the inner peripheral side region and the outer peripheral side region of the slats. In the inner peripheral side region of the slats, the work of blowing air is good, the blowing efficiency is good, the reachable range of blowing can be widened, and the wind speed can be increased even near the center part of the ceiling fan. Have.

  Moreover, it is a ceiling fan provided with an air quality improving function in the air passage space of the slats, and has an effect that indoor air contaminated by scattering of dust and the like due to operation of the ceiling fan can be improved.

  In addition, the air quality improvement function is a ceiling fan that is dust collection by a filter, and it can be improved by collecting indoor air that is contaminated by scattering of dust etc. by the operation of the ceiling fan with a filter. It has the action.

  In addition, the air quality improvement function is a ceiling fan that is fragrant, and it can aroma the indoor air polluted with odor due to scattering of dust and the like by the operation of the ceiling fan, and can improve unpleasant odor It has the action.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
Embodiment 1 of the present invention is shown in FIGS. As shown in FIGS. 1 to 3, the ceiling fan 1 includes an attachment means 3 for fixing one end of the rotating shaft 2 to the ceiling surface side, an electric motor 4 that rotates around the rotating shaft 2, and an electric motor that includes the electric motor 4. A rotating body 5 that rotates together with the main body 6 is provided, and three blades 8 are fixed to the rotating section 5 of the main body 6 via the arm section 7. In this example, the outer diameter of the main body 6 is 250 mm, the distance from the ceiling 9 to the lowest end 10 of the main body 6 is 300 mm, the inner diameter of the blade 8 is 300 mm, the outer diameter is 900 mm, and the attachment means 3 is attached to the ceiling 9. The hook member can be fixed to a hook ceiling provided in advance. The joint portion 11 between the arm portion 7 and the blade plate 8 is located at a diameter of 500 mm, and the blade plate 8 is divided into an inner peripheral region 12 and an outer peripheral region 13 with the joint portion 11 as a boundary.

  The outer peripheral side region 13 of the vane plate 8 is fixed at an outer peripheral side attachment angle θo (in this example, the outermost peripheral attachment angle is 20 degrees), which is an attachment angle in the circumferential direction around the rotation shaft 2. The inner peripheral side region 12 of the plate 8 is fixed in the circumferential direction around the rotation axis 2 with an inner peripheral side mounting angle θi (80 degrees in this example) larger than the outer peripheral side mounting angle θo of the outer peripheral side region 13. The inner peripheral side region 12 and the outer peripheral side region 13 are smoothly joined.

  With this configuration, when the vane plate 8 is rotated by the electric motor 4, the pressure increase action of the vane plate 8 causes the outer peripheral side region 13 of the vane plate 8 to pass between the ceiling 9 and the vane plate 8 from the outer periphery when rotating in the forward direction. Air is blown downward, and during reverse rotation, air is blown from the lower side of the vane plate 8 between the ceiling 9 and the vane plate 8 to the outer periphery of the vane plate 8. Produces different outer circulation winds 14. At that time, in the inner peripheral side region 12 of the slat 8, the air on the inner peripheral side from the inner peripheral end 15 flows into the slat 8 when blowing in the forward direction and blows downward, and the air is blown from below at the reverse rotation. Since the air flows into the plate 8 and is blown out toward the inner peripheral side, the inner circulating air 16 can be generated near the main body 6 of the ceiling fan 1 simultaneously with the outer circulating air 14. However, since the work of blowing is performed, the blowing efficiency is good and the reachable range of blowing can be widened.

(Embodiment 2)
A second embodiment of the present invention is shown in FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 4, an inner peripheral blade 17 is fixed as an inner peripheral region 12 on the inner peripheral side of the arm portion 7 branched at the joint portion 11, and an outer peripheral region 13 is positioned on the outer peripheral side of the joint portion 11. A side blade 18 is fixed.

  With this configuration, since the inner peripheral side region 12 and the outer peripheral side region 13 are not integral, the outer peripheral side region 13 that generates the optimum shape for the flow of the inner peripheral side region 12 that generates the inner circulating wind 16 and the outer circulating wind 14. Since the optimum shape for the flow of air can be determined independently, the air blowing efficiency is good, and the reachable range of the air can be widened.

(Embodiment 3)
A third embodiment of the present invention is shown in FIG. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 5, the blade 8 is positioned above the lowermost end 10 of the main body 6.

  With this configuration, the inner circulating air 16 can be generated in the inner peripheral side region 12 of the slat 8 near the center 6 of the ceiling fan 1 and immediately below the center without increasing the product height of the ceiling fan 1 as a whole. The ventilation efficiency is good, and the reachable range of the ventilation can be widened.

(Embodiment 4)
A fourth embodiment of the present invention is shown in FIG. The same parts as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 6, the slat 8 is positioned below the lowermost end 10 of the main body 6, the inner diameter of the slat 8 is 150 mm, and the inner peripheral end 15 of the inner peripheral region 12 is inside the outer periphery of the main body 6. Is located.

  With this configuration, the radial length of the inner peripheral region 12 can be increased, and the work amount of the inner peripheral region 12 can be increased to improve the blowing efficiency.

(Embodiment 5)
A fifth embodiment of the present invention is shown in FIG. The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Fig.7 (a) is a perspective view of the ceiling fan 1 of Embodiment 5 of this invention, FIG.7 (b) is the same front view. As shown in FIGS. 7A and 7B, the inner peripheral side of the inner peripheral region 12 is parallel to the rotary shaft 2 and has a circular arc shape that is convex in the reverse rotation direction in a cross-sectional shape perpendicular to the rotary shaft 2. The angle α of the inner peripheral end 15 is 45 degrees in the forward rotation direction, and the inner peripheral region 12 is shaped to generate a centrifugal flow when rotating in the forward direction.

  With this configuration, the inner circumferential region 12 generates a centrifugal flow when rotating in the forward direction, the centrifugal flow is transmitted from the inner circumferential region 12 to the outer circumferential region 13 of the blade 8, and from the outer circumferential region 13. Since the wind speed in the centrifugal direction of the air can be increased, the air can be blown over a wide range.

  Note that the cross-sectional shape perpendicular to the rotation axis 2 is an arc shape that is convex in the forward rotation direction, the angle α of the inner peripheral end 15 is 45 degrees in the reverse rotation direction, and the inner peripheral region 12 is in the centrifugal direction during the reverse rotation. If it is the structure which generate | occur | produces this flow, the circulation wind speed which blows off to the outer peripheral side at the time of reverse rotation can be improved.

  The cross-sectional shape of the inner peripheral region 12 perpendicular to the rotating shaft 2 may be any shape that smoothly guides the airflow, such as a plurality of arc shapes, and the angle α is determined by the inner peripheral end 15 catching the inner peripheral air. In order to be able to do so, it may be between 0 degrees and 90 degrees.

(Embodiment 6)
A sixth embodiment of the present invention is shown in FIGS. The same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 8, the joint portion 11 is provided with a slat metal fitting 19 attached to the slat 8 and an arm metal fitting 20 attached to the tip of the arm portion 7 to fix the radial direction of the ceiling fan 1. The shaft 21 is fixed by a bolt 22 and a nut 23.

  With this configuration, it is possible to change the attachment angle θ of the blade 8 with the fixed shaft 21 of the joint 11 as a fulcrum. Therefore, according to the size of the room and the ceiling height, the attachment angle is made shallow and the blowing reach range is reduced. It can be narrowed or widened by increasing the mounting angle.

  As shown in FIG. 9, when the fixed shaft 21 is the circumferential direction of the ceiling fan 1, the elevation angle β of the blade 8 can be changed. Therefore, by increasing the elevation angle β, the reach range is widened and the elevation angle is increased. The reach can be narrowed by making it smaller.

  Note that if the vane metal fitting 19 and the arm metal fitting 20 are provided with the fixed shaft 21 in both the radial direction and the circumferential direction, the reach range can be adjusted by both the attachment angle θ and the elevation angle β.

(Embodiment 7)
A seventh embodiment of the present invention is shown in FIGS. The same parts as those in the first to sixth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIGS. 10 and 11, the ceiling fan 1 includes an attachment means 3 that fixes one end of the rotating shaft 2 to the ceiling surface side, an electric motor 4 that rotates around the rotating shaft 2, and an electric motor 4 that includes the electric motor 4. A main body 6 having a rotating part 5 that rotates together with the main body 6 is provided, and three blades 8 are fixed to the rotating part 5 via an arm part 7. In this example, the outer diameter of the main body 6 is 250 mm, the distance from the ceiling 9 to the lowest end 10 of the main body 6 is 300 mm, the inner diameter of the blade 8 is 300 mm, the outer diameter is 900 mm, and the attachment means 3 is attached to the ceiling 9. The hook member can be fixed to a hook ceiling provided in advance. The vane plate 8 is composed of an upper plate 24 and a lower plate 25, and an arbitrary circumferential cross-sectional shape around the rotating shaft 2 is an airfoil having a hollow and an outer mounting angle θo (in this example, an outermost mounting angle). The air passage space 26 is formed between the upper plate 24 and the lower plate 25, and the inner peripheral opening 28 and the outer peripheral end are respectively formed at the inner peripheral end 15 and the outer peripheral end 27 of the blade plate 8. An opening 29 is provided.

  With the above configuration, when the vane plate 8 is rotated by the electric motor 4, the air passing between the ceiling 9 and the vane plate 8 from the outer periphery of the ceiling fan 1 is lowered by the pressure increasing action of the lower plate 25 of the vane plate 8 when rotating in the forward direction. The air in the air passage space 26 is pushed out to the outer peripheral side by the action of centrifugal force, so that the air on the inner peripheral side of the ceiling fan 1 flows into the air passage space 26 from the inner peripheral opening 28 and enters the outer periphery. Since a flow that blows out from the opening 29 to the outer peripheral side of the ceiling fan 1 is generated, and the outer circulating wind 14 and the inner circulating wind 16 can be generated at the same time, the air blowing work is also performed on the inner peripheral side of the blade 8. And the reachable range of the air can be widened.

  During reverse rotation, the pressure of the upper plate 24 of the slat 8 causes the air to be blown from the lower part of the slat 8 to the outer periphery of the ceiling fan 1 through the space between the ceiling 9 and the slat 8 and by centrifugal force. 26, the air on the inner peripheral side of the ceiling fan 1 flows into the air passage space 26 from the inner peripheral opening 28, and generates a flow that blows out from the outer peripheral opening 29 to the outer peripheral side of the ceiling fan 1. The circulation wind speed can be improved.

(Embodiment 8)
An eighth embodiment of the present invention is shown in FIG. The same parts as those in the first to seventh embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Fig.12 (a) is a perspective view of the ceiling fan 1 of Embodiment 8 of this invention, FIG.12 (b) is the top view. As shown in FIG. 12, the upper plate inner diameter Dti of the upper plate 24 of the blade 8 is 500 mm, the lower plate inner diameter Dbi of the lower plate 25 is 300 mm, and the upper plate inner diameter Dti of the upper plate 24 is larger. The arm portion 7 is fixed to the plate 25.

  With this configuration, the inner peripheral opening 28 is formed at the position of the upper plate inner diameter Dti above the lower plate 25, so that the portion of the lower plate 25 up to the upper plate inner diameter Dti collects air in the inner peripheral opening 28 during reverse rotation. In addition, the wind speed blown out from the outer peripheral opening 29 through the air passage space 26 can be improved.

(Embodiment 9)
Embodiment 9 of the present invention is shown in FIG. The same parts as those in the first to eighth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Fig.13 (a) is a perspective view of the ceiling fan 1 of Embodiment 9 of this invention, FIG.13 (b) is the bottom view. As shown in FIG. 13, the upper plate inner diameter Dti of the upper plate 24 of the blade 8 is 300 mm, the lower plate inner diameter Dbi of the lower plate 25 is 500 mm, and the upper plate inner diameter Dti of the upper plate 24 is smaller. The arm portion 7 is fixed to the plate 24.

  With this configuration, the inner peripheral opening 28 is formed at the position of the lower plate inner diameter Dbi below the upper plate 24. Therefore, when rotating in the forward direction, the portion of the upper plate 24 up to the lower plate inner diameter Dbi passes air into the inner peripheral opening 28. It is possible to improve the speed of wind blown from the outer peripheral opening 29 through the air passage space 26 and to widen the reach range of the air blowing.

(Embodiment 10)
Embodiment 10 of the present invention is shown in FIG. The same parts as those in the first to ninth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 14, the upper plate 24 of the wing plate 8 is fixed to the rotating portion 5 via the arm portion 7, and the joint portion 11 between the arm portion 7 and the upper plate 24 of the wing plate 8 is at a position of 500 mm in diameter. The blade 8 is divided into an inner peripheral region 12 and an outer peripheral region 13 with the joint 11 as a boundary.

  With this configuration, in addition to the expansion of the reach range due to the effect that the air on the inner peripheral side blows out from the outer peripheral opening 29 through the air passage space 26, the inner peripheral end 12 of the blade plate 8 has an inner peripheral end during forward rotation. 15, the air on the inner peripheral side from 15 flows into the blade 8 and blows downward, and during reverse rotation, the air flows into the blade 8 from below and blows toward the inner peripheral, so that the main body 6 of the ceiling fan 1 The inner circulating wind 16 can be generated in the vicinity immediately below, and the air blowing work is performed also in the inner peripheral side region 12 of the vane plate 8. Therefore, the air blowing efficiency is good and the air blowing range can be widened.

(Embodiment 11)
An eleventh embodiment of the present invention is shown in FIG. The same parts as those in Embodiments 1 to 10 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 15, an air quality improvement function 30 is provided in the air passage space 26 of the blade 8. In this example, the filter 31 for collecting dust provided in the outer peripheral opening 29 is used.

  With this configuration, indoor air that is contaminated by scattering of dust or the like due to the operation of the ceiling fan 1 passes through the air passage space 26 provided with the air quality improvement function 30, thereby improving the air quality.

  As the air quality improvement function 30, in addition to dust collection by the filter 31, heating by an electric heater, deodorization by an activated carbon filter, negative ions by a high pressure generator, and the like may be used.

(Embodiment 12)
Embodiment 12 of the present invention is shown in FIG. The same parts as those in the first to eleventh embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 15, as an air quality improvement function 30, a dust collecting filter 31 is provided in the outer peripheral opening 29 of the air passage space 26 of the blade 8.

  With this configuration, indoor air contaminated by scattering of dust or the like due to the operation of the ceiling fan 1 passes through the filter 31 fixed to the outer peripheral opening 29 through the air passage space 26, but is collected by the filter 31, Air quality can be improved.

(Embodiment 13)
A thirteenth embodiment of the present invention is shown in FIG. The same parts as those in the first to twelfth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 16, the air quality improving function 30 includes an aroma portion 32 that can store a solid fragrance near the outer peripheral opening 29 of the air passage space 26 of the blade 8.

  With this configuration, indoor air contaminated with odor due to scattering of dust or the like due to the operation of the ceiling fan 1 is fragrant when passing through the fragrance portion 32 that passes through the air passage space 26 and is fixed in the vicinity of the outer peripheral opening 29. Since it blows out from the opening 29, an unpleasant odor in the room can be improved.

  The present invention works on the inner peripheral side region of the slats to improve the air blowing efficiency, has a wide air reaching range, and can increase the wind speed just below the center of the ceiling fan when rotating in the forward direction. The ceiling fan that can increase the speed of the circulating air blown from the blades to the outer periphery during reverse rotation and can improve the indoor air quality is provided.

The perspective view which shows the ceiling fan of Embodiment 1 of this invention The side view which shows the ceiling fan of Embodiment 1 of this invention The partial perspective view which shows the ceiling fan of Embodiment 1 of this invention The perspective view which shows the ceiling fan of Embodiment 2 of this invention The side view which shows the ceiling fan of Embodiment 3 of this invention The side view which shows the ceiling fan of Embodiment 4 of this invention The figure which shows the ceiling fan of Embodiment 5 of this invention, (a) Perspective view, (b) Front view The fragmentary perspective view which shows the ceiling fan of Embodiment 6 of this invention The fragmentary perspective view which shows the ceiling fan of Embodiment 6 of this invention The perspective view which shows the ceiling fan of Embodiment 7 of this invention Side view showing a ceiling fan according to a seventh embodiment of the present invention. The figure which shows the ceiling fan of Embodiment 8 of this invention, (a) Perspective view, (b) Top view The figure which shows the ceiling fan of Embodiment 9 of this invention, (a) Perspective view, (b) Bottom view The perspective view which shows the ceiling fan of Embodiment 10 of this invention. The fragmentary perspective view which shows the ceiling fan of Embodiment 11, 12 of this invention The fragmentary perspective view which shows the ceiling fan of Embodiment 13 of this invention Side view showing a conventional ceiling fan

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling fan 2 Rotating shaft 3 Attaching means 4 Electric motor 5 Rotating part 6 Main body 7 Arm part 8 Blade plate 9 Ceiling 10 Bottom end 11 Joining part 12 Inner side area 13 Outer side area θo Outer side side mounting angle θi Inner side side mounting angle 14 Outer circulating air 15 Inner peripheral edge 16 Inner circulating air 17 Inner peripheral vane plate 18 Outer peripheral vane plate α angle 19 Blade plate bracket 20 Arm bracket 21 Fixed shaft 22 Bolt 23 Nut θ Mounting angle β Elevation angle 24 Upper plate 25 Lower Plate 26 Air passage space 27 Outer peripheral end 28 Inner peripheral opening 29 Outer peripheral opening Dti Upper plate inner diameter Dbi Lower plate inner diameter 30 Air quality improvement function 31 Filter 32 Fragrance

Claims (14)

Mounting means for fixing one end of the rotating shaft to the ceiling surface side, an electric motor rotating around the rotating shaft, a main body containing all or part of the electric motor, and an arm portion on the electric motor or the main body via an arm portion A ceiling fan that includes a plurality of fixed blades, and the blade rotates together with the electric motor to blow air, and the outside circulating air generated by the air blown from the blades toward the outer peripheral side, and the blades A ceiling fan characterized by simultaneously generating an internal circulating air generated by the flow of air from the inside toward the inner periphery. The ceiling fan according to claim 1, wherein a joint portion between the arm portion and the blade is at a boundary between the inner peripheral region and the outer peripheral region of the blade. The ceiling fan according to claim 2, wherein the blade is divided at the joint portion, and the inner peripheral region and the outer peripheral region are constituted by the inner peripheral blade plate and the outer peripheral blade plate. The ceiling fan according to claim 2 or 3, wherein the blades are located above the lowest point of the main body. The ceiling fan according to claim 2 or 3, wherein the slats or the inner peripheral region is located below the lowest point of the main body, and the inner peripheral end of the inner peripheral region is located inside the outermost periphery of the main body. The ceiling fan according to any one of claims 2 to 5, wherein the inner peripheral region has a shape that generates a flow in a centrifugal direction by rotation about the rotation axis. The ceiling fan according to any one of claims 2 to 6, wherein the attachment angle of the blades can be changed with the joint as a fulcrum. Attachment means for fixing one end of the rotating shaft to the ceiling surface side, an electric motor rotating around the rotating shaft, a main body containing all or part of the electric motor, and a blade fixed to the electric motor via an arm portion A ceiling fan in which the vane plate rotates with the electric motor and blows air, and part or all of the vane plate is composed of an upper plate and a lower plate, and an inner peripheral side and an outer peripheral side of the vane plate The ceiling fan according to claim 1, further comprising an air passage space having an opening in each. The ceiling fan according to claim 8, wherein an inner diameter Dti of the upper plate of the slats is larger than an inner diameter Dbi of the lower plate. The ceiling fan according to claim 8, wherein an inner diameter Dti of the upper plate of the slats is smaller than an inner diameter Dbi of the lower plate. The upper plate of the slat is fixed to the electric motor via an arm part, and the joint part between the arm part and the slat is at the boundary between the inner peripheral region and the outer peripheral region of the slat. Crab ceiling fan. The ceiling fan in any one of Claims 8-11 provided with the air quality improvement function in the wind path space of a blade. The ceiling fan according to claim 12, wherein the air quality improving function is dust collection by a filter. The ceiling fan according to claim 12, wherein the air quality improving function is fragrance.

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