JP2003328983A - Air agitator for space under floor and under roof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air agitator which restricts the noise of the air agitator, and improves ventilating ability thereof and which can prevent intrusion of insects and small animals. <P>SOLUTION: This air agitator 1 for a space under floor and under the roof is provided with two divided fixed and moving fan casings 2 and 3, a fan motor 6 provided between the fixed and the moving fan casings 2 and 3, and a multi- blade fan 8 fixed to a rotary shaft 7 of the fan motor 6 for rotation. As a moving means for the moving fan casing 3, a moving motor 11 provided in the periphery of the fixed fan casing 11, a spiral shaft 12 extended from the moving shaft 11, and a nut 13 engaged with the spiral shaft 12 and fixed to the moving fan casing 13 are provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air stirrer for stirring air under the floor or above the ceiling.

[0002]

2. Description of the Related Art Conventionally, as an air agitator for agitating air under the floor or above the ceiling, there is known an air agitator having a sirocco fan or a turbo fan built therein and having an air blowout port (Japanese Patent Laid-Open No. 2001-355598). .

[0003]

However, in the conventional air stirrer, a net plate for preventing invasion of insects, rats, etc. is provided at the outlet, so that the noise due to the wind noise is increased and the air stirrer is also increased. There is a problem that the air volume of the On the other hand, if this mesh plate is not provided, insects and small animals may invade when the stirring is stopped, which may cause a failure.

Therefore, it is an object of the present invention to provide an air stirrer capable of reducing noise of the air stirrer, improving the ventilation capacity, and preventing invasion of insects and small animals. .

[0005]

An underfloor / attic ceiling air stirrer for achieving the above object comprises a fan motor, a fan, and a fan casing arranged around the fan. In an underfloor / above-ceiling air agitator, the fan casing is divided into a fixing fan casing and a moving fan casing, and the moving fan casing is moved in a separating direction and an approaching direction with respect to the fixing fan casing. With the means, the moving means moves the moving fan casing in the separating direction to form a blow-out port when the fan motor is driven,
By moving the moving fan casing in the approaching direction,
It is characterized in that it is configured as a means for closing the blowout port when the fan motor is stopped.

According to this under-floor / above-ceiling air agitator,
When the fan motor is driven, the moving means separates the moving fan casing from the fixing fan casing so that a blowout port is formed. When the fan motor is stopped, the moving unit brings the moving fan casing closer to the fixing fan casing so that the blowout port is closed. Here, the movement of the moving fan casing in the separating direction may be performed immediately before, at the same time as, or immediately after the driving of the fan motor. Similarly, the movement of the moving fan casing in the approaching direction may be performed immediately before, simultaneously with, or immediately after the stop of the fan motor.

According to the under-floor / above-ceiling air stirrer of claim 1, since the blow-out port is closed when the fan motor is stopped, it is possible to prevent invasion of insects and small animals, and to prevent dust and dirt. It is possible to prevent the adhesion of the like. When the fan motor is running, the fan rotates and the air is blowing out, so insects and small animals do not enter. Therefore,
It is not necessary to provide a mesh plate at the outlet. Thereby, the wind noise can be eliminated and the ventilation capacity can be improved.

The underfloor / attic air agitator according to claim 2 is the underfloor / attic air agitator according to claim 1, wherein the moving means is a moving motor and a screw driven by the moving motor. And a feed mechanism.

According to this agitator for underfloor / above the ceiling,
When driving the fan motor, the moving motor is driven, the screw feed mechanism is rotated, and the moving fan casing is moved in the separating direction. After that, when the movement motor is stopped and the movement of the movement fan casing is stopped, a blowout port is formed. Further, when the fan motor is stopped, the moving motor is driven so as to rotate in the reverse direction, and when the screw feed mechanism is rotated in the reverse direction, the moving fan casing is moved in the approaching direction. After that, when the movement motor is stopped and the movement of the movement fan casing is stopped, the blowout port is closed.

According to the air stirrer for underfloor / ceiling of claim 2, in addition to the effect of claim 1, since the moving fan casing is moved by the moving motor, the operation is reliable and the moving fan is stable. There is also an effect that the casing is not in the half-opened state or the half-closed state.

An underfloor / attic air stirrer according to claim 3 is the underfloor / attic air stirrer according to claim 2, wherein the moving motor is driven by a timer.
It is characterized in that the separating operation and / or the approaching operation of the moving fan casing are executed.

According to this under-floor / above-ceiling air agitator,
As a driving condition of the moving motor for moving the moving fan casing in the separating direction, for example, the driving is started immediately before the driving of the fan motor, and the driving motor is stopped after a sufficient time has elapsed to form the blowout port. Should be set as follows. Alternatively, the drive motor should be started immediately before the fan motor is started.
It may be stopped when it is detected that the moving fan casing has moved to a predetermined position. In addition, the driving condition of the moving motor for moving the moving fan casing in the approaching direction is, for example, that the driving is started immediately after the fan motor is stopped, and the moving motor is stopped after a sufficient time has elapsed to close the outlet. You can set it to do so. Alternatively, the driving of the moving motor may be started immediately after the stop of the fan motor, and the driving may be stopped when it is detected that the moving fan casing has moved to a predetermined position. The timer setting conditions are not limited to these, and may be the same as the drive start time of the fan motor, or may be slightly delayed.

Since the fan motor is normally driven by a timer, the underfloor / ceiling air stirrer according to claim 3 has the advantages of claim 1 and 2 and facilitates the timing of driving / stopping the fan motor. There is also the effect that they can be matched.

An underfloor / attic air stirrer according to claim 4 is the underfloor / attic air stirrer according to claim 1, wherein the moving means is the same as the inclined groove provided in the moving fan casing. Provided in the moving fan casing, parallel grooves parallel to the rotation shaft of the fan motor, and directly or indirectly attached to the rotation shaft, when the rotation shaft is rotated, open outward by centrifugal force,
A centrifugal force member that returns to its original position when stopped, a rotating member that is arranged around the centrifugal force member and that rotates when engaged with the centrifugal force member, and a rotating member that is provided in the rotating member A first lever member that is inserted, a second lever member that is provided in the fixing fan casing and that is inserted into the parallel groove, and the lever member that moves the fan member when the fan motor stops. An urging member that urges the motor in a direction opposite to the rotation direction is provided.

According to this underfloor / above-ceiling air agitator,
When the fan motor is driven to rotate the rotary shaft, the centrifugal force member extends outward or rotates outward, for example. When the centrifugal force member and the rotating member are engaged, the rotating member rotates. As a result, the first lever member rotates,
The distance from the second lever member is changed, and the movement of the moving fan casing is moved in the separating direction by the action of the inclined groove, so that a blowout port is formed. When the fan motor is stopped, the centrifugal force weakens and the centrifugal force member returns to its original position. When the centrifugal force member is disengaged from the rotating member, the rotating member returns to its original position by the biasing member. As a result, the first lever member rotates in the reverse direction, the distance between the first lever member and the second lever member changes, and the movement fan casing moves in the approaching direction due to the action of the inclined groove, and the outlet is closed.

According to the underfloor / under-ceiling air agitator of the fourth aspect, in addition to the effect of the first aspect, the moving fan casing can be opened and closed by using the fan motor.
This eliminates the need for expensive parts such as motors and control circuits for opening and closing the moving fan casing. In addition, since the centrifugal force member, rotating member, lever member and biasing member can be designed to be housed in the moving and stationary fan casings, the entire air agitator is compact, and it can be carried in and installed under the floor. Is easy.

The underfloor / attic air stirrer according to a fifth aspect is the underfloor / attic air stirrer according to the fourth aspect, in which vertical grooves are provided at both ends of the inclined groove and are perpendicular to the rotation axis. It is characterized by being.

According to this underfloor / above-ceiling air agitator,
The first lever member is located in the vertical groove on the side opposite to the fixing fan casing before the fan motor is driven. When the moving fan casing is moving in the separating direction, the first lever member comes out of the vertical groove and enters the inclined groove, and If possible, move to the vertical groove on the side of the fixing fan casing. Further, when the fan motor is stopped and the moving fan casing is moving in the approaching direction, the first lever member enters the inclined groove again, and when the blowout port is closed, the first lever member moves to the vertical groove on the opposite side to the fixing fan casing. To do.

According to the underfloor / attic air stirrer of claim 5, in the underfloor / attic air stirrer of claim 1, in addition to the effects of claims 1 and 4, when the air outlet is opened and closed, Since the first lever member is engaged with the vertical groove, the position of the moving fan casing is fixed. As a result, there is an effect that the moving fan casing is not in the half-opened state or the half-closed state.

An underfloor / attic air agitator according to claim 6 is the underfloor / attic air agitator according to claim 1, wherein the moving means is provided in the moving fan casing, and the fixing fan casing is provided. A thick cylinder on the opposite side and a thin cylinder on the opposite side, and a centrifugal force that is directly or indirectly attached to the rotation shaft of the fan motor, opens outward by centrifugal force when the rotation shaft rotates, and returns to the original position when stopped. A member and a biasing member that biases the moving fan casing toward the fixed fan casing when the fan motor is stopped, and the centrifugal force member is housed in the cylinder. It is characterized by

According to this underfloor / above-ceiling air agitator,
When the fan motor is driven to rotate the rotary shaft, the centrifugal force member causes the centrifugal force member to extend or rotate and spread outward. Along with this, the contact position between the centrifugal force member and the cylinder changes from the thin side of the cylinder to the thick side. As a result, the moving fan casing moves in the separating direction to form a blowout port. When the fan motor stops, the centrifugal force weakens and the centrifugal force member returns to its original position. As a result, the force of the biasing member to move in the approaching direction is overcome, and the moving fan casing closes the outlet. Therefore, the fan motor can be used to open and close the moving fan casing.

According to the under-floor / under-ceiling air agitator of claim 6, in addition to the effect of claim 1, it is possible to open and close the moving fan casing by using the fan motor.
This eliminates the need for expensive parts such as motors and control circuits for opening and closing the moving fan casing.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, an underfloor / attic air agitator 1 according to a first embodiment is provided with two fixed and movable fan casings 2 and 3, and is installed under the floor. The mounting member 4 coupled to the center of the upper portion of the stationary fan casing 2, the multiple annular air intakes 5 formed at the bottom of the movable fan casing 3, and the stationary and movable fan casings 2 and 3 are provided. The fan motor 6 provided between the fan motor 6 and the sirocco fan 8 fixed to the rotating shaft 7 of the fan motor 6 and rotating.

As shown in FIG. 2, the moving means of the underfloor / above-ceiling air agitator 1 according to the first embodiment includes a guide member 10 for stabilizing the movement of the moving fan casing 3. A moving motor 11 provided on the outer peripheral side of the fixing fan casing 2, and a moving motor 11
A spiral shaft 12 extending from the spiral shaft 12 and a nut 13 engaged with the spiral shaft 12 and fixed to the moving fan casing are provided.

According to the underfloor / under-ceiling air agitator 1 of the first embodiment, the moving motor 11 is driven and the spiral shaft 12 is rotated immediately before the fan motor 6 is driven. This rotation causes the moving fan casing 3 to start moving in the separating direction. And nut 13
When reaches the lower end of the spiral shaft 12, the moving motor 11 stops, the moving fan casing 3 stops moving in the separating direction, and the blowout port 9 is formed. Immediately after stopping the fan motor 6, the moving motor 11 is driven to rotate the spiral shaft 12 in the reverse direction. This reverse rotation causes the moving fan casing 3 to start moving in the approaching direction. When the moving motor 11 is stopped and the fixed and moving fan casings 2 and 3 come into contact with each other, the outlet 9 is closed. For the above operation, a timer circuit is provided, and the timer operation of the fan motor 6 is performed.
The opening / closing operation of the moving fan casing 3 is executed in a linked manner.

As a result, according to the underfloor / inside-ceiling air agitator 1 of the first embodiment, it is possible to eliminate the mesh plate, which is provided in the conventional agitator, at the outlet 9, so that the noise is reduced. It can be lowered and the ventilation capacity can be improved. Even if the mesh plate is removed in this manner, since the blow-out port 9 is closed when stirring is stopped, invasion of insects and small animals can be prevented, and adhesion of dust and dirt can also be prevented. Since the moving motor 11 is used, the opening / closing operation is reliable.

Next, a second embodiment will be described with reference to the drawings. An underfloor / attic air agitator 20 according to the second embodiment is, as shown in FIGS. 3 and 4, a fixed and movable fan casing 2 divided into two.
1 and 22, a vertical groove 23 and an inclined groove 24 opened on the side surface of the moving fan casing, a mounting member 25 coupled to the upper center of the fixing fan casing 21 for mounting under the floor, and A fan motor 26 provided between the moving fan casings 21 and 22.
And a sirocco fan 28 that is fixed to the rotating shaft 27 of the fan motor 26 and rotates. Also, the inclined groove 24
Horizontal grooves 24a and 24b are provided at both ends of the.
In addition, a large number of annular air intakes are formed at the bottom of the moving fan casing 22.

Further, the agitator 20 for underfloor / above the ceiling is
The moving means includes a centrifugal force member, a rotating member, a first lever member, a support member, a second lever member, and a biasing member. The centrifugal force member includes a centrifugal force lever 41, one end of which is fixed to the rotary shaft 27 and which extends outward by the rotation of the rotary shaft 27, a return spring 42 provided at an expansion / contraction point of the centrifugal force lever 41, and a centrifugal force lever. Four
1 and a bearing 43 attached to the tip of the bearing 1. The rotary member is engaged with the centrifugal force lever 41 when it extends and rotates integrally with the lever disc 44.
And a ring frame 45. The first lever member has an inclined groove 24 on the side surface of the moving fan casing 22.
It is composed of an opening / closing case lever 46 that meshes with.
The support member rotatably supports a column 51 suspended from the fixing fan casing 21, an underframe 52 on a disc provided on the column 51, and a lever disc 44 provided on the underframe 52 so as to be rotatable. Metal fittings 53
Consists of. The second lever member is provided on the support column 51, and is configured by a guide case lever 52 that engages with the parallel groove 23 on the side surface of the moving fan casing 22. The biasing member is composed of a return spring 55 that connects the underframe 52 and the opening / closing case lever 46.

According to the underfloor / under-ceiling air agitator 20 of the second embodiment, when the fan motor 26 is driven to rotate the rotary shaft 27, the centrifugal force lever 41 extends outward. And the centrifugal force lever 41 and the ring frame 45
When is engaged, the lever disc 44 rotates. By this rotation, the opening / closing case lever 46 approaches the guide case lever 54. As a result, after the opening / closing case lever 46 comes out of the horizontal groove 24a and enters the inclined groove 24,
The moving fan casing 22 starts moving in the separating direction. This creates an air outlet 29. Finally, the opening / closing case lever 46 moves to the end of the horizontal groove 24b. When the drive of the fan motor 26 is stopped, the centrifugal force is weakened, and the return spring 42 causes the centrifugal force lever 41 to return to its original position. Since the centrifugal force lever 41 is disengaged from the ring frame 45, the lever disc 44 is returned to the original position by the return spring 55. As a result, the opening / closing case lever 46 moves in a direction away from the guide case lever 54. As a result,
After the opening / closing case lever 46 exits the horizontal groove 24b and enters the inclined groove 24, the moving fan casing starts moving in the approaching direction. This allows the air outlet 2
9 closes. Also at this time, the opening / closing case lever 46 is
It moves to the end of the horizontal groove 24a.

As a result, according to the underfloor / under-ceiling air agitator 20 of the second embodiment, it is possible to eliminate the net plate at the outlet 29, which is provided in a conventional agitator, and therefore noise is generated. It can be lowered and the ventilation capacity can be improved. Even if the mesh plate is eliminated in this manner, the blowout port 29 is closed when the stirring is stopped, so that it is possible to prevent invasion of insects and small animals, and also to prevent dust and dirt from adhering. Then, the fixed and movable fan casing 2
Since the components other than the mounting bracket 25 are housed in the insides of 1 and 22, the whole agitator is compact, and it is easy to carry it under the floor and to install and remove it. Furthermore, fan motor 2
Since the moving fan casing 22 can be opened / closed by using 6, the moving motor and the timer circuit for the opening / closing operation as in the first embodiment are not required. Further, since the bearing 43 is provided, friction between the centrifugal force lever 41 and the ring frame 45 after the moving fan casing 22 is fully opened is reduced. Furthermore, the inclined groove 24
There are horizontal grooves 24a, 24b at both ends of the horizontal groove 24a.
Since it is engaged with 24b, the moving fan casing 22 is fixed and stable. The horizontal grooves 24a and 24b correspond to the vertical grooves in the present invention. Also, the vertical groove 23
It corresponds to the parallel groove in the present invention.

Next, a third embodiment will be described with reference to the drawings. As shown in FIGS. 5 and 6, an under-floor / in-ceiling air agitator 60 according to a third embodiment has two fixed and movable fan casings 6.
1, 62, a mounting member 63 coupled to the center of the upper part of a fixing fan casing 61 for mounting under the floor, a fan motor 64 provided between the fixing and moving fan casings 61 and 62, and a fan motor. It is provided with a sirocco fan 66 which is fixed to a rotating shaft 65 of 64 and rotates. Note that a large number of annular air intakes are formed at the bottom of the moving fan casing 62.

Further, the air stirrer 60 for underfloor / above the ceiling is
As a moving means, a cylinder 70 which is located at the center of the moving fan casing 62 and is provided from the inside toward the outside.
And a centrifugal force member and a biasing member. The centrifugal force member is housed in the cylinder 70, is fixed below the rotating shaft 65, and rotates with the rotating shaft 65.
1, an arm lever 73 that rotates about an arm shaft 72, a bearing 74 located at the tip of the arm lever 73, and a return spring 75 provided from the arm lever 73 toward the cylinder 70. The urging member is configured by a return spring 76 that suspends and supports the moving fan casing 62 from the fixed fan casing 61. Further, the cylinder 70 is configured such that the fixing fan casing 61 side is thicker than the opposite side.

According to the under-floor / under-ceiling air agitator 60 of the third embodiment, when the fan motor 64 is driven and the rotary shaft 65 is rotated, the arm lever 7 is driven by centrifugal force.
3 spreads outward around the arm shaft 72. With this expansion, the contact position between the bearing 74 and the cylinder 70 changes, and the cylinder 70 moves downward. As a result, the moving fan casing 62 moves in the separating direction to form the air outlet 67. When the drive of the fan motor 64 is stopped, the centrifugal force weakens, and the return spring 75 tries to return the arm lever 73 to the original position. Along with this return, the urging force of the return spring 76 prevails,
The cylinder 70 moves upward. As a result, the moving fan casing 62 moves in the approaching direction, and the air outlet 6
7 closes.

As a result, according to the underfloor / under-ceiling air agitator 1 of the third embodiment, it is possible to eliminate the mesh plate, which is conventionally provided in agitators, at the outlet 67, so that the noise is reduced. The ventilation capacity can be improved. Even if the mesh plate is removed in this manner, the blowout port 67 is closed when the stirring is stopped, so that it is possible to prevent invasion of insects and small animals, and also to prevent dust and dirt from adhering. Further, since the moving fan casing 62 can be opened and closed by using the fan motor 64, a moving motor and a timer circuit for opening / closing operation are not required.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, but can be implemented in various modes without departing from the scope of the invention. .

For example, in the embodiment, the sirocco fan is provided, but the turbo fan or the propeller fan may be provided.

For example, in the embodiment, the moving means is configured to use a motor or a centrifugal force member, but it may be configured to use a solenoid, a cylinder, a wire, or a shape memory alloy.

For example, when a turbo fan is provided instead of the sirocco fan, the fixed fan casing and the moving fan casing are connected by a return spring, and the fan casing is opened by the wind pressure of the fan. It is also possible to do.

[0039]

As described above, according to the present invention, there is provided an air stirrer capable of reducing the noise of the air stirrer, improving the ventilation capacity, and preventing the invasion of insects and small animals. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure of an under-floor / under-ceiling air agitator according to a first embodiment.

FIG. 2A is a cross-sectional view and FIG. 2B is a bottom view when an outlet of an underfloor / ceiling air agitator according to the first embodiment is opened.

FIG. 3 (A) is a cross-sectional view when the outlet of the under-floor / attic air agitator as the second embodiment is closed.
(B) is a bottom view showing the centrifugal force member and the rotating member.

FIG. 4 shows an under-floor / under-ceiling air agitator as a second embodiment, (A) is a side view when an outlet is opened, and (B) is a side view when the outlet is closed. is there.

FIG. 5 shows an under-floor / under-ceiling air agitator as a third embodiment, (A) is a cross-sectional view when an outlet is opened, and (B) is a plan view showing a state inside a cylinder. .

FIG. 6 is a cross-sectional view of the underfloor / above-ceiling air agitator according to the third embodiment when an outlet is closed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air stirrer for underfloor / ceiling, 2 ... Fixed fan casing, 3 ... Moving fan casing, 4
... Mounting member, 5 ... Air intake port, 6 ... Fan motor, 7 ... Rotating shaft, 8 ... Sirocco fan, 9 ... Outlet port, 10 ... Guide member, 11
... Movement motor, 12 ... Spiral shaft, 13 ... Nut, 20 ... Underfloor / ceiling air agitator, 21 ... Fixing fan casing, 22 ...
・ Movement fan casing, 23 ・ ・ ・ Vertical groove, 24 ・
..Inclined grooves, 24a ... horizontal grooves, 24b ... horizontal grooves, 25 ... mounting members, 26 ... fan motors,
27 ... Rotary shaft, 28 ... Sirocco fan, 29 ...
..Blowout ports, 41 ... Centrifugal force levers, 42 ...
Return spring, 43 ... Bearing, 44 ...
-Lever disc, 45 ... Ring frame, 46 ... Opening / closing case lever, 51 ... Struts, 52 ... Underframe, 53 ... Metal fittings, 54 ... Guide case lever, 55 ... Return spring, 60 ... Air stirrer for underfloor / ceiling, 61 ... Fixing fan casing, 62 ... Moving fan casing, 63 ...
Mounting member, 64 ... Fan motor, 65 ... Rotating shaft, 66 ... Sirocco fan, 67 ... Outlet port, 70 ... Cylinder, 71 ... Disc, 72 ... Arm shaft , 73 ... Arm lever, 74 ... Bearing, 75 ... Return spring, 76 ... Return spring.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F04D 29/46 F04D 29/46 J F24F 7/10 F24F 7/10 A 101 101Z F term (reference) 3H021 AA01 AA08 BA01 BA11 CA10 DA09 3H022 AA02 BA01 CA56 DA04 DA10 DA11 3H034 AA02 AA11 AA18 BB02 BB06 BB20 CC03 DD01 DD16 DD26 DD30 EE04 EE06 EE15 3H045 AA06 AA09 AA12 AA26 AA31 BA01 BA31 BA38 CA28 DA28

Claims (6)

[Claims] 1. An underfloor including a fan motor, a fan, and a fan casing arranged around the fan.
In an attic air agitator, the fan casing is divided into a fixed fan casing and a moving fan casing, and a moving means is provided for moving the moving fan casing in a separating direction and an approaching direction with respect to the fixing fan casing. At the same time, the moving means moves the moving fan casing in the separating direction to form a blowout port when the fan motor is driven, and moves the moving fan casing in the approaching direction. An under-floor / under-ceiling air stirrer configured as means for closing the blow-out port when the fan motor is stopped. 2. The underfloor / ceiling air stirrer according to claim 1, wherein the moving means includes a moving motor and a screw feeding mechanism driven by the moving motor. An air stirrer for underfloor / ceiling. 3. The underfloor / above-ceiling air agitator according to claim 2, wherein the moving motor is configured to execute a separating operation and / or an approaching operation of the moving fan casing by timer driving. Characteristic air stirrer for underfloor and above-ceiling. 4. The underfloor / above-ceiling air agitator according to claim 1, wherein the moving means is an inclined groove provided in the moving fan casing, and the moving means is also provided in the moving fan casing. A parallel groove parallel to the rotation axis, and a centrifugal force member that is directly or indirectly attached to the rotation axis, opens outward due to centrifugal force when the rotation axis rotates, and returns to the original position when stopped. A rotating member disposed around the centrifugal force member and rotating when engaged with the centrifugal force member; a first lever member provided on the rotating member and inserted into the inclined groove; Second lever member that is provided in the fan casing for use and that is inserted into the parallel groove; and, when the fan motor is stopped, controls the lever member to rotate in the rotation direction of the fan motor. Floor-ceiling air stirrer, characterized in that a biasing member for biasing the opposite direction. 5. The underfloor / attic ceiling air stirrer according to claim 4, comprising vertical grooves provided at both ends of the inclined groove and perpendicular to a rotation axis. Air stirrer. 6. The underfloor / above-ceiling air agitator according to claim 1, wherein the moving means is provided in the moving fan casing, and has a thick cylinder on the stationary fan casing side and a thin cylinder on the opposite side. A centrifugal force member that is directly or indirectly attached to the rotation shaft of the motor, opens outward by centrifugal force when the rotation shaft rotates, and returns to the original position when stopped, and when the fan motor stops, An under-floor / under-ceiling air agitator, comprising: an urging member for urging the moving fan casing toward a fixed fan casing, and the centrifugal force member is housed in the cylinder. .