JP2013160218A - Ceiling fan - Google Patents

Abstract

[PROBLEMS] A conventional ceiling fan has a problem that an air flow downward is generated only in a narrow range equivalent to the outer diameter of the ceiling fan, and the air flow cannot be directly received in other ranges.
A pair of opposing arc-shaped plates 12 is supported on the outer periphery of an impeller 11 of a ceiling fan 1 by a rod-like support member 13 extending outwardly from a non-rotating portion 7 of the main body 8 above the blade plate 9. By adopting a fixed configuration, the airflow increased in pressure on the outer peripheral side of the impeller 11 is swung by a repulsive force that collides with the arcuate plate 12 after colliding with the arcuate plate 12 and has no cut 14 without the arcuate plate 12. Since it is thrown out diagonally below the outer diameter of the impeller 11, it can reach an outer side than the outer diameter of the impeller 11, and can be an elliptical airflow with the arcuate plate 12 position as the short diameter. The airflow can be directly applied in a range wider than the diameter.
[Selection] Figure 1

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 FIG. 6, the overall structure of the ceiling fan 101 includes a canopy (upper cover) 102, an inner 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 passing 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 between the ceiling 109 and the blade 107 to the outer periphery of the blade 107. Therefore, in the case of cooling in the vicinity of the ceiling fan 101 mainly in the summer, it is used in the forward rotation, and in the case of encouraging the circulation of the air in the whole room so as not to feel the cold wind by the direct wind mainly in the winter. Used in reverse rotation.

Japanese Patent Application Laid-Open No. 11-210678 (page 2-4, FIG. 1)

  In such a conventional ceiling fan, when the air is blown downward by rotation in the forward direction, the downward airflow is generated only in a narrow range equivalent to the outer diameter of the ceiling fan 101. Can not be directly bathed, only the curved airflow reaches after reaching the floor surface, and there is a problem that the airflow cannot be bathed when there are obstacles such as furniture and other people.

  The present invention solves such a conventional problem, and provides a ceiling fan that can be directly exposed to an air current in a wider range than the outside diameter of the ceiling fan when it is blown downward by forward rotation. The purpose is to do.

  In order to achieve this object, the present invention provides an electric motor that rotates around a rotating shaft, and includes a rotating part that includes all or a part of the electric motor. And a main body having a non-rotating part, and a plurality of blades fixed in an annular shape to the electric motor or the rotating part, and the ceiling fan that rotates with the electric motor and the impeller rotates to become an impeller, This arc-shaped plate is provided on the outer periphery of the impeller, thereby achieving the intended purpose.

  ADVANTAGE OF THE INVENTION According to this invention, the ceiling fan which can receive an airflow directly in the range wider than the outer diameter of a ceiling fan can be provided.

The lower perspective view which shows the ceiling fan of Embodiment 1 of this invention Upper perspective view of the ceiling fan (A) Top view of the ceiling fan, (b) Side view of the ceiling fan The upper perspective view which shows the ceiling fan of Embodiment 2 of this invention (A) Side view of the ceiling fan, (b) Bottom view of the ceiling fan Side view showing a conventional ceiling fan

  The ceiling fan according to claim 1 of the present invention includes an electric motor that rotates around a rotating shaft, and includes a rotating part that is not attached to the rotating part and a non-rotating part that includes an attaching unit that is fixed to the ceiling surface at one end. A ceiling fan that includes a main body having a rotating part and a plurality of blades fixed in an annular shape to the electric motor or the rotating part, and the blades rotate with the electric motor to become an impeller and blow air, and a pair of opposed circles An arc plate is provided on the outer periphery of the impeller.

  As a result, the air flow boosted on the outer peripheral side of the impeller collides with the arc-shaped plate and then is turned off by the repulsive force that collides with the arc-shaped plate, and is released diagonally below the cut line without the arc-shaped plate. The effect of reaching the outside of the outer diameter of the car and allowing the airflow to spread in an elliptical shape with the arcuate plate position being the shorter diameter, and to be directly exposed to the airflow in a wider range than the outer diameter of the ceiling fan Play.

  Further, a support member that extends outward from the non-rotating portion of the main body and supports the arc-shaped plate may be provided, and the support member may be positioned above the blade plate.

  Thereby, there exists an effect that it can suppress that a support member becomes lower than an impeller, an airflow is disturb | confused and the range which an airflow reaches becomes narrow.

  Moreover, you may make it the structure which can adjust the circumferential direction position of a pair of circular arc-shaped board.

  Thereby, the direction of the major axis direction of the elliptical airflow can be changed, and there is an effect that the range in which the airflow can be directly applied can be adjusted according to the shape of the room, the arrangement of the furniture, and the like.

  Further, the position of the pair of arcuate plates in the rotation axis direction may be variable.

  As a result, when there is no need to expand the airflow range, such as when the number of people exposed to the airflow is small, it is possible to eliminate the expansion of the airflow range by moving the position of the arcuate plate in the rotation axis direction, eliminating the need for a ceiling fan. There is an effect that power can be suppressed.

  In addition, there is provided switching means for switching the rotation direction of the impeller that blows downward (hereinafter referred to as forward rotation) and the reverse rotation direction (hereinafter referred to as reverse rotation), and the rotational axis position of the arc-shaped plate during reverse rotation You may make it the structure located above a blade.

  In this way, during reverse rotation, which is mainly used to obtain a circulation effect for improving the heating efficiency in winter, the airflow is collected in part of the circumferential direction by the arc-shaped plate to increase the wind speed and reach the distant place. Skein, and the circulation effect can be improved.

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

(Embodiment 1)
As shown in FIG. 1 and FIG. 2, the ceiling fan 1 includes an electric motor 5 that rotates around a rotating shaft 4 provided with an attachment means 3 that is fixed to the ceiling 2 at one end, and rotates together with the electric motor 5 including the electric motor 5. A main body 8 having a rotating part 6 and a non-rotating part 7 is provided, and five blades 9 are fixed to the rotating part 6 of the main body 8 in an annular shape.

  The non-rotating part 7 is provided with a control circuit 10 that controls how the electric motor 5 rotates (for example, the number of rotations and the direction of rotation). The impeller 11 is formed by the impeller 9 being rotated by the electric motor 5. In this example, the outer diameter of the main body 8 is 250 mm, the outer diameter of the vane plate 9 is 900 mm, and the attachment means 3 is a hook member that can be fixed to a hook ceiling provided in the ceiling 2 in advance.

  On the outer periphery of the impeller 11, a pair of opposed arcuate plates 12 are supported and fixed by rod-like support members 13 extending outwardly above the blade plates 9. The central portion 16 of the support member 13 has a cylindrical shape including the rotation shaft 4 and is supported by the non-rotating portion 7 of the main body 8. The arc length of the arc-shaped plate 12 is about ¼ of the circumferential length of the impeller 11 and is almost the same length as the cut 14 without the arc-shaped plate 12. The pair of arcuate plates 12 can be rotated together with the support member 13, and the circumferential position can be adjusted.

  According to such a configuration, as shown in FIGS. 1 to 3, when the impeller 11 rotates forward by the electric motor 5, the air is blown downward. However, as shown in FIGS. 3 (a) and 3 (b), the impeller Since the air pressure boosted on the outer peripheral side of 11 is collided with the arcuate plate 12 and then swung by the repulsive force colliding with the arcuate plate 12, it is discharged diagonally below the cut 14 without the arcuate plate 12. It can be an airflow that extends outside the outer diameter of the impeller 11 and extends in an elliptical shape with the arcuate plate 12 position as a short diameter, and is directly exposed to the airflow in a range wider than the outer diameter of the ceiling fan 1. Can do.

  At this time, as shown in FIG. 2, the support member 13 that supports the arcuate plate 12 is positioned above the impeller 11, so that the airflow is disturbed below the impeller 11, and the range in which the airflow reaches becomes narrower. In addition, the thickness of the ceiling fan 1 from the ceiling 2 does not increase, and a feeling of pressure is not given.

  At this time, the pair of arc-shaped plates 12 can be rotated together with the support member 13 and the circumferential position thereof can be adjusted, so that the direction of the elliptical airflow in the major axis direction can be changed, and the shape of the room and furniture The range in which the airflow can be directly applied can be adjusted according to the arrangement or the like.

  Although the pair of arcuate plates 12 opposed to the outer periphery of the impeller 11 is supported and fixed, the arcuate plate 12 may be a polygonal shape that is not arcuate or a wavy shape instead of a plate shape. The same effect can be obtained as long as the airflow on the outer peripheral side of the impeller 11 can be sent to the break 14.

  In the present embodiment, the arc length of the arc-shaped plate 12 is about 1/4 of the circumference of the impeller 11, but is preferably in the range of 20 to 45%, and less than 20% is a circle. The repulsive force exerted on the airflow by the arcuate plate 12 is small and the airflow cannot be expanded, and if it is greater than 45%, the cut 14 of the arcuate plate 12 becomes small and the airflow that is emitted diagonally decreases and the airflow is expanded. I can't. Furthermore, it is desirable that the length of the arcuate plate 12 in the short direction is equal to or greater than the length of the blade plate 9 in the thickness direction so as to give a sufficient repulsive force to the airflow.

(Embodiment 2)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 4, a spacer 15 is provided as an adjusting means capable of moving the vertical position of the support member 13 in the non-rotating portion 7 of the main body 8, and the rotational axis direction position of the pair of arcuate plates 12 can be adjusted together with the support member 13. It has a configuration. The spacer 15 is composed of two semi-cylindrical parts, and is supported by being assembled and installed so as to be a cylinder that encloses the rotating shaft 4 between the non-rotating portion 7 of the main body 8 and the central portion 16 of the supporting member 13. The position of the member 13 can be adjusted.

  According to such a configuration, when there is no need to expand the range of the airflow, such as when the number of people who are exposed to the airflow is small, the arcuate plate 12 is moved upward to a position off the outer periphery of the impeller 11. Therefore, the expansion of the air current range can be eliminated, and unnecessary power of the ceiling fan can be suppressed.

  In addition, the ceiling fan 1 is configured so that the impeller 11 is reversely rotated by the control circuit 10 so that the airflow is blown against the ceiling 2 to send the airflow in the centrifugal direction mainly in order to obtain a circulation effect for improving the heating efficiency in winter. Although used, according to such a configuration, as shown in FIGS. 4 and 5, the position of the arc-shaped plate 12 in the direction of the rotation axis 4 can be positioned above the blade plate 9 during reverse rotation. The airflow can be collected at the cut line 14 of the arcuate plate 12, the wind speed can be increased and the airflow can reach far away, and the circulation effect can be improved.

  Further, if the circumferential position of the pair of arcuate plates 12 can be adjusted, it is better because the direction in which the airflow can reach in the distance can be adjusted according to the shape of the room and the arrangement of the heating appliances and windows.

  In the present embodiment, the adjusting means is the spacer 15 installed between the central portion 16 of the support member 13 and the non-rotating portion 7 of the main body 8, but the central portion 16 of the support member 13 is used as the rotation shaft 4. A method of adjusting the vertical direction of the support member 13 by screwing, or adjusting the vertical direction of the support member 13 by supporting a central portion 16 of the support member 13 by inserting a pin into one of a plurality of holes provided in the rotating shaft 4. The method of doing etc. may be used.

  In addition, if there is a method in which a jack is provided between the central portion 16 of the support member 13 and the non-rotating portion 7 of the main body 8 and the jack is operated by a stepping motor to adjust the vertical direction of the support member 13, etc. It is even better because the vertical direction of the support member 13 can be adjusted automatically without reaching up to around 2.

  The ceiling fan of the present invention is useful as a ceiling fan or the like that is installed on the ceiling and is used for reducing the temperature of the body due to direct wind or circulating indoor air.

DESCRIPTION OF SYMBOLS 1 Ceiling fan 2 Ceiling 3 Attaching means 4 Rotating shaft 5 Electric motor 6 Rotating part 7 Non-rotating part 8 Main body 9 Blade plate 10 Control circuit 11 Impeller 12 Arc-shaped plate 13 Support member 14 Cut 15 Spacer 16 Center part

Claims (5)

An electric motor that rotates around a rotation axis, and has an attachment means that is fixed to the ceiling surface at one end;
A main body including a rotating part and a non-rotating part, including all or part of the electric motor;
A plurality of blades fixed in an annular shape to the electric motor or the rotating part;
A ceiling fan that rotates with the electric motor and the blades rotate to become an impeller,
A ceiling fan provided with a pair of opposed arcuate plates on the outer periphery of the impeller. The ceiling fan according to claim 1, further comprising a support member that extends outward from the non-rotating portion of the main body and supports the arc-shaped plate, and the support member is positioned above the blade plate. The ceiling fan according to claim 1 or 2, wherein a circumferential position of the pair of arcuate plates can be adjusted. The ceiling fan according to any one of claims 1 to 3, wherein positions of the pair of arcuate plates in the rotation axis direction are variable. 5. A switching means for switching a rotation direction of the impeller that blows downward and a rotation direction opposite to the rotation direction is provided, and a position in the rotation axis direction of the arc-shaped plate is positioned above the blade plate during reverse rotation. The ceiling fan described in 1.

Images