JP2011149300A - Air agitating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortable indoor environment, without making a resident feel a sense of an air current in winter, in an air agitator installed to a ceiling and used for lowering a sensible temperature by direct wind or circulating indoor air. <P>SOLUTION: An air agitating device has structure including: a blowing means 1 disposed to a ceiling face in a room; and a mounting means 6 mounting the blowing means 1 to the ceiling face, and wherein a current of air blown from the blowing means 1 forms a current of air swirling in a whole room in an obliquely downward direction along a wall face. Since the difference between a temperature of the current of air sucked from the blowing means 1 and a temperature of the current of air blown from the blowing means 1 is reduced, action of buoyancy received by the current of air blown from the blowing means 1 is suppressed. Then, the air can be blown against buoyancy at a low wind speed to provide the comfortable indoor environment, without making the resident feel the sense of the air current in winter. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

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

  Conventionally, this type of air agitating device 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 air stirring apparatus will be described with reference to FIG.

  As shown in FIG. 14, the entire configuration of the air agitating device 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 air agitating device 101 is suspended.

  In the above configuration, the blades 107 are attached with a predetermined angle in the radial direction around the rotation axis. When the blades 107 are rotated by the electric motor, the blades 107 are boosted by the pressure increase action of the blades 107 to rotate 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, when cooling is taken near the air stirring device 101 mainly in summer, it is used in forward rotation, and mainly in winter, when air circulation in the entire room is promoted so as not to feel a cold wind feeling with direct wind. Used in reverse rotation.

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

  In such a conventional air agitation device, air is agitated by reverse rotation so as not to feel the feeling of cold air by direct wind, but in practice, an air volume that can sufficiently circulate room air by reverse rotation is obtained. If it is going to do, since the airflow experienced by a resident will generate | occur | produce and a resident will feel chilly, there exists a subject that driving | running an air stirring apparatus is avoided in winter. The reason why the air current felt by the occupant during reverse rotation is based on the following principle.

  The air sent between the ceiling 109 and the blades 107 from below the blades 107 blows in the entire circumferential direction while colliding with the ceiling surface and receiving friction with the ceiling surface. After the air flow blown in the entire circumferential direction reaches the floor surface, it is attracted by the suction air flow of the air agitator and synthesized immediately below the air agitator. It will occur near the part.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide an air agitating device that can circulate indoor air without causing the occupant to feel a feeling of airflow in winter.

  In order to achieve this object, the present invention comprises at least one air blowing means provided on an indoor wall surface and / or ceiling surface, and an attachment means for attaching the air blowing means to the wall surface and / or ceiling surface. An air stirrer characterized by forming an air flow swirling the whole room in the diagonally downward direction or diagonally upward direction along the wall surface by the airflow blown out from the blowing means, It achieves the intended purpose.

  According to the present invention, it is provided with at least one air blowing means provided on an indoor wall surface and / or ceiling surface, and mounting means for attaching the air blowing means to the wall surface and / or ceiling surface, and is blown out from the air blowing means. By adopting a configuration that forms an air flow that swirls the entire room in the diagonally downward or diagonally upward direction along the wall surface, the temperature gradient caused by heating in winter can be corrected with a slow wind speed. Therefore, it is possible to provide an air stirrer that is effective in forming a comfortable indoor environment without feeling a sense of airflow.

(A) The perspective view which shows the air stirring apparatus of Embodiment 1 of this invention, (b) The side view which shows the air stirring apparatus of Embodiment 1 of this invention (A) The perspective view which shows the wind speed vector of the air stirring apparatus of Embodiment 1 of this invention, (b) The side view which shows the wind speed vector of the air stirring apparatus of Embodiment 1 of this invention (A) The perspective view which shows the air stirring apparatus of Embodiment 2 of this invention, (b) The side view which shows the air stirring apparatus of Embodiment 1 of this invention The perspective view which shows the air stirring apparatus of Embodiment 3 of this invention. The perspective view which shows the air stirring apparatus of Embodiment 4 of this invention. The perspective view which shows the air stirring apparatus of Embodiment 4 of this invention. (A) The perspective view which shows the air stirring apparatus of Embodiment 5 of this invention, (b) The bottom view which shows the air stirring apparatus of Embodiment 5 of this invention FIG. 6 is a diagram showing the relationship between the rotational speed and the temperature difference in the air agitator according to Embodiment 5 of the present invention The perspective view which shows the air stirring apparatus of Embodiment 6 of this invention. (A) The perspective view which shows the air stirring apparatus of Embodiment 7 of this invention, (b) The bottom view which shows the air stirring apparatus of Embodiment 7 of this invention Side view showing an air agitating device according to Embodiment 6 of the present invention. (A) The perspective view which shows the air stirring apparatus of Embodiment 8 of this invention, (b) The perspective view which shows the ventilation means of Embodiment 8 of this invention. The perspective view which shows the air stirring apparatus of Embodiment 9 of this invention. Side view showing a conventional air stirring device

  The air stirrer according to claim 1 of the present invention comprises at least one air blowing means provided on an indoor wall surface and / or ceiling surface, and mounting means for attaching the air blowing means to the wall surface and / or ceiling surface. The airflow blown from the air blowing means forms an airflow that swirls the entire room in a diagonally downward direction or a diagonally upward direction along the wall surface.

  As a result, the airflow temperature sucked into the blower means and the airflow blown out from the blower means by blowing out the airflow obliquely downward or obliquely upward from the blower means with respect to the temperature gradient generated in the indoor vertical direction due to heating. Since the difference from the temperature becomes small and the buoyancy effect received by the airflow blown out from the blowing means can be suppressed, it is possible to blow against the buoyancy at a slow wind speed.

  Furthermore, by blowing out airflow that is obliquely downward or obliquely upward from the air blowing means, the airflow that swirls greatly throughout the room is formed, so that the temperature gradient generated in the room can be changed to the upper, middle, and lower parts of the room. By correcting in stages, the temperature gradient in the room can be suppressed at a slow wind speed.

  Therefore, since the temperature gradient caused by heating in winter can be corrected with a slow wind speed, there is an effect that a comfortable indoor environment can be formed without feeling a sense of airflow.

  The air blowing means includes an electric motor that rotates about a rotation shaft, a rotating body that includes all or part of the electric motor, and a plurality of moving blades that are fixed to the electric motor or the rotating body. An air stirrer that fixes one end of the rotating shaft to the ceiling surface side, and the moving blades rotate together with the electric motor to stir the indoor air, and the pressure increasing action accompanying the rotation of the moving blades in the rotating direction of the moving blades You may make it the structure of converting.

  Thereby, with the rotation of the moving blade, the ratio of the wind speed component in the rotational direction increases, and a swirl flow in the obliquely downward direction can be formed in the entire room.

  Further, the inclination angle on the outer peripheral side of the moving blade may be larger than the inclination angle on the inner peripheral side of the moving blade.

  As a result, the rotor blades on the outer peripheral side increase the pressure while entraining the airflow in the rotation direction of the rotor blades, whereby the airflow boosted by the rotor blades can be converted into an airflow having a large wind speed component in the rotation direction.

  Further, the inclination angle may gradually increase from the inner peripheral side to the outer peripheral side of the moving blade.

  Thereby, it can convert into an air current with many rotation direction components by entraining an air current to the perimeter side with a big inclination gradually.

  Further, the blade area on the outer peripheral side may be larger than the blade area on the inner peripheral side of the moving blade.

  As a result, the Coanda effect, which is the property that air flows along the object, acts more on the outer peripheral side of the moving blade, so that a part of the air flow boosted on the outer peripheral side of the moving blade is turned into an air flow in the rotational direction. Can be converted.

  Moreover, you may make it a structure which has a wind direction conversion means on a moving blade.

  Thereby, since the airflow flowing through the moving blade is gently guided to the outer peripheral direction of the moving blade by the wind direction changing means, the wind velocity component in the rotating direction of the moving blade can be increased.

  Further, the wind direction changing means may be a plate fixed substantially perpendicularly from the inner peripheral side front edge to the outer peripheral side rear edge of the moving blade.

  As a result, the airflow flowing through the moving blades is gently guided along the wind direction changing means toward the outer peripheral direction of the moving blades, so that the wind velocity component in the rotating direction of the moving blades can be increased.

  Moreover, you may make it a structure that a wind direction conversion means is a groove | channel from the inner peripheral side front edge of a moving blade to an outer peripheral side rear edge.

  Thereby, since the airflow flowing through the moving blade is gently guided along the groove of the wind direction changing means toward the outer periphery of the moving blade, the wind velocity component in the rotating direction of the moving blade can be increased.

  Moreover, you may make it the structure that the outer peripheral side rear edge of a moving blade is extended toward the downstream of the rotation direction of a moving blade.

  As a result, the Coanda effect, which is the property of air flowing along the object, acts on the outer peripheral side trailing edge of the moving blade, thereby converting a part of the air flow boosted on the outer peripheral side of the moving blade into an air flow in the rotational direction. And can be converted.

  Alternatively, the rotational speed may be increased in the rotational direction when the moving blades pressurize the airflow in the ceiling surface direction.

  As a result, as the rotational speed of the moving blade increases, the airflow flowing on the moving blade slips in the radial direction and the rotating direction of the moving blade, and the ratio of the wind velocity component in the rotating direction can be increased.

  A first temperature detecting means for detecting an air temperature in the upper part of the room and an air temperature in the lower part of the room; and a speed control unit for controlling the speed of the electric motor by calculating a difference between the air temperature in the upper part of the room and the lower part of the room. It may be configured to have.

  Thereby, the wind speed according to the buoyancy produced by the difference of the air temperature of indoor upper part and indoor lower part can be produced | generated suitably.

  Moreover, you may make it the structure of having an angle change means to change the angle of a moving blade.

  Thus, for example, to obtain cool air directly in the summer, increase the blade angle to increase the axial wind speed component, or to reduce the air flow feeling in the winter while correcting indoor temperature irregularities. The ratio of the wind speed component can be freely adjusted, for example, by reducing the rotor blade angle to increase the rotational speed of the rotor blade and increasing the wind speed component in the rotation direction.

  A second temperature detecting means for detecting the air temperature at the upper part of the room and the air temperature at the lower part of the room; an angle control part for controlling the angle changing means by calculating a difference between the air temperature at the upper part of the room and the lower part of the room; You may make it the structure of having.

  Thereby, according to the buoyancy produced by the difference in the air temperature between the indoor upper part and the indoor lower part, the moving blade angle can be changed by the signal from the angle control unit, and the wind speed component suitable for the indoor environment can be generated.

  Moreover, you may make it the structure of having the stationary blade which converts the wind speed component of a radial direction into the wind speed component of a rotation direction in the outer side direction of a moving blade.

  As a result, the radial wind velocity component generated by the moving blades is gradually converted into the rotational direction along the stationary blades, thereby increasing the rotational wind velocity component.

  Moreover, you may make it the structure of providing the auxiliary blade of a perpendicular direction in the outer peripheral edge part of a moving blade.

  As a result, the wind speed component in the radial direction generated by the sliding of the rotor blade in the outer circumferential direction is separated from the trailing edge of the rotor blade as the rotor blade rotates while colliding with the auxiliary blade, thereby causing the wind speed component in the rotation direction. Can be increased.

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

(Embodiment 1)
As shown in FIG. 1 (a), hereinafter, the wind velocity vector component of the air flow generated by the blowing means 1 is the same direction as the rotating direction of the moving blade 5, the rotational direction, the vertical direction of the blowing means 1 is the axial direction, and the blowing means 1 The side direction will be described as the radial direction.

  First, the configuration of the first embodiment will be described.

  As shown in FIG. 1A and FIG. 1B, the air blowing means 1 includes an electric motor 3 that rotates around a rotating shaft 2, a rotating body 4 that includes all or part of the electric motor 3, and an electric motor 3. Or a plurality of moving blades 5 fixed to the rotating body 4, and the attachment means 6 fixes one end of the rotating shaft 2 to the ceiling surface side, and the moving blade 5 rotates together with the electric motor 3, It is an air agitating device that performs agitation, and is configured to convert a pressure increasing action accompanying the rotation of the moving blade 5 into the rotating direction of the moving blade 5.

  Examples of the attachment means 6 include a hooking blade that can be attached to a ceiling ceiling or a hooking closet provided on a ceiling surface of a general house, a member that is directly screwed to a beam on the ceiling surface, or the like.

The moving blade 5 is configured such that the inclination angle θ _out on the outer peripheral side of the moving blade 5 is larger than the inclination angle θ _in from the horizontal direction on the inner peripheral side of the moving blade 5. Here, as an example, θ _in is 40 ° and θ _out is 45 °.

  Next, the operation of the first embodiment will be described.

  As shown in FIGS. 2 (a) and 2 (b), by blowing an air flow obliquely downward from the air blowing means 1, an air flow that swirls largely throughout the entire room is formed, thereby creating a temperature gradient generated in the room. By correcting in steps like the upper, middle, and lower parts of the room, the temperature gradient in the room can be suppressed at a slow wind speed.

  Here, the buoyancy generated by room heating or the like is generally calculated by using a Bushnesque approximation formula using a temperature difference from a certain reference temperature using air as an incompressible fluid. In this case, the buoyancy increases in proportion to the temperature difference. That is, if the indoor air circulation is performed using the wind velocity vector in the direction of gravity, the difference between the airflow temperature blown out from the blower unit 1 and the surrounding temperature rapidly increases, and the airflow blown out from the blower unit 1. This means that the buoyancy received by will be greater.

  Accordingly, if the airflow in the obliquely downward direction is blown out as described above, the difference between the airflow temperature blown out from the blower means 1 and the surrounding temperature does not rapidly increase, and the buoyancy received is reduced, so that the slower wind speed The indoor temperature gradient can be suppressed.

  Furthermore, when the inclination on the outer peripheral side is made larger than the inclination on the inner peripheral side of the moving blade 5, the outer peripheral moving blade 5 increases the pressure while entraining the airflow in the rotating direction of the moving blade 5, thereby It can be converted into a large airflow.

  As described above, according to Embodiment 1 of the present invention, the temperature gradient generated by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. it can.

(Embodiment 2)
First, the configuration of the second embodiment will be described.

  3 (a) and 3 (b), the same components as those in the first embodiment are given the same reference numerals, and detailed descriptions thereof are omitted.

As shown in FIGS. 3A and 3B, the inclination angle gradually decreases from the inner peripheral side to the outer peripheral side of the moving blade 5. Here, as an example, the innermost circumferential angle θ ′ _in from the horizontal direction is 23.5 °, the outermost circumferential angle θ ′ _out is 57.5 °, and the change in angle is changed by 2 ° for every 100 mm pitch. .

  According to this structure, it can convert into an airflow with many rotation direction components by gradually entraining an airflow to the outer peripheral side with a big inclination.

  As described above, according to the second embodiment of the present invention, the temperature gradient caused by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. it can.

(Embodiment 3)
First, the configuration of the third embodiment will be described.

  In FIG. 4, the same components as those in any of Embodiments 1 to 2 are given the same reference numerals, and detailed descriptions thereof are omitted.

  As shown in FIG. 4, the blade area on the outer peripheral side is larger than the blade area on the inner peripheral side of the moving blade 5. Here, as an example, the inner chord length is 114 mm, and the outer chord length is 140 mm.

  According to this configuration, the Coanda effect, which is the property that air flows along the object, acts more on the outer peripheral side of the moving blade 5, so that a part of the air flow boosted on the outer peripheral side of the moving blade 5 is rotated in the rotation direction. Can be converted into an airflow.

  Thus, according to Embodiment 3 of the present invention, the temperature gradient generated by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. it can.

(Embodiment 4)
First, the configuration of the fourth embodiment will be described.

  In FIG. 5, the same components as those in any of Embodiments 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, a configuration in which wind direction changing means is provided on the moving blade 5 may be adopted. Here, as an example, the wind direction changing means is a wind direction changing plate 7 that is fixed substantially vertically from the inner peripheral side front edge to the outer peripheral side rear edge of the rotor blade 5. The wind direction changing plate 7 has a curved shape of R1000 mm, is installed three by three at a pitch of 150 mm with respect to one moving blade 5, and has a height of 3 mm protruding in the vertical direction from the moving blade.

  As a result, the airflow flowing through the moving blade 5 is gently guided toward the outer peripheral direction of the moving blade 5 by the wind direction changing plate 7, so that the wind velocity component in the rotating direction of the moving blade 5 can be increased.

  Further, the wind direction changing means has the same effect even in a configuration in which the groove 8 extends from the inner peripheral front edge to the outer peripheral rear edge of the rotor blade 5 as shown in FIG.

  As described above, according to the fourth embodiment of the present invention, the temperature gradient caused by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. it can.

(Embodiment 5)
First, the configuration of the fifth embodiment will be described.

  7 (a) and 7 (b), the same components as those in any of Embodiments 1 to 4 are given the same reference numerals, and detailed descriptions thereof are omitted.

  As shown in FIGS. 7A and 7B, the outer peripheral side rear edge of the moving blade 5 extends toward the downstream side in the rotational direction of the moving blade 5.

  Further, the first temperature detecting means 9 for detecting the air temperature in the upper part of the room and the air temperature in the lower part of the room, and the rotational speed for controlling the rotational speed of the electric motor 3 by calculating the difference between the air temperature in the upper part of the room and the lower part of the room. And a control unit 10. As the first temperature detection means 9, various temperature sensors such as a thermocouple for measuring the air temperature in the upper part of the room, and various infrared sensors such as a thermopile for measuring the air temperature in the lower part of the room can be used.

  Next, the operation of the fifth embodiment will be described.

  As shown by the arrow in FIG. 7A, the outer peripheral side trailing edge of the moving blade 5 extends, so that the Coanda effect, which is the property that air flows along the object, acts on the trailing edge. A part of the air pressure boosted on the side can be converted into an air current in the rotation direction.

  Moreover, the wind speed according to the buoyancy produced by the difference in the air temperature between the indoor upper part and the indoor lower part can be appropriately generated.

  In FIG. 8, as an example, an air stirrer is installed in the center of a room with a ceiling height of 2.5 m, 10 tatami mats (4500 mm × 3600 mm), a mounting angle of 5 °, a chord length of 100 mm, and a blade width of 450 mm. The relationship between a temperature difference and the motor rotation speed in the case of using the moving blade 5 having an outer peripheral side trailing edge length of 50 mm is shown. The plotted points indicate the minimum number of rotations satisfying 80% of the temperature unevenness improvement rate at each temperature difference.

Here, the temperature unevenness improvement rate is defined by the following equation.
Temperature unevenness improvement rate = (Δt−Δt ′) / Δt × 100 [%]

  Here, Δt indicates a temperature difference between the air stirrer ambient temperature before the air stirrer operation and the floor surface temperature of the room, and Δt ′ represents the air stirrer ambient temperature after the air stirrer operation and the floor surface of the room. It shows the temperature difference from the temperature. However, the optimum value of the rotation speed varies depending on conditions such as the size of the room and the ceiling height.

  As described above, according to the fifth embodiment of the present invention, the temperature gradient caused by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. it can.

(Embodiment 6)
First, the configuration of the sixth embodiment will be described.

  In FIG. 9, the same code | symbol is provided about the component similar to either of Embodiment 1-5, and the detailed description is abbreviate | omitted.

  As shown in FIG. 9, a configuration is adopted in which a stationary blade 11 that converts a radial wind velocity component into a rotational wind velocity component is provided outside the rotor blade 5.

  Next, the operation of the sixth embodiment will be described.

  As indicated by the arrows in FIG. 9, the radial wind speed component generated by the moving blade 5 is gradually converted into the rotational direction along the stationary blade 11, thereby increasing the rotational wind speed component. it can.

  As described above, according to Embodiment 6 of the present invention, a temperature gradient generated by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. .

(Embodiment 7)
First, the configuration of the seventh embodiment will be described.

  In FIG. 10A, FIG. 10B, and FIG. 11, the same components as those in any of Embodiments 1 to 6 are given the same reference numerals, and detailed descriptions thereof are omitted.

  As shown in FIG. 10A, the auxiliary blade 12 in the vertical direction is provided at the outer peripheral end of the moving blade 5.

  Further, as shown in FIG. 10B, the second temperature detection means 13 for detecting the air temperature in the upper part of the room and the air temperature in the lower part of the room, and calculating the difference between the air temperature in the upper part of the room and the lower part of the room. And an angle control unit 14 for controlling the changing means 15. As the second temperature detection means 13, various temperature sensors such as a thermocouple for measuring the air temperature in the upper part of the room, and various infrared sensors such as a thermopile for measuring the air temperature in the lower part of the room can be used.

  Further, as shown in FIG. 11, the motor 3 has an angle changing means 15 for changing the angle of the moving blade 5. The angle changing means 15 transmits the power of the angle changing motor 16 to the first power transmitting means 17 and the second power transmitting means 18 to change the angle of the moving blade 5. The second power transmission means 18 is arranged for each rotor blade 5, and each receives the power of the angle changing motor 16 through the first power transmission means 17.

  Next, the operation of the seventh embodiment will be described.

  As indicated by the arrow in FIG. 10A, the radial wind speed component generated by the slip of the moving blade 5 in the outer circumferential direction collides with the auxiliary blade 12 and moves along with the rotation of the moving blade 5. By separating from the trailing edge, the wind speed component in the rotational direction can be increased.

  In addition, for example, when cooling by direct wind is obtained in summer, the angle of the moving blade 5 is increased to increase the axial wind speed component, or the temperature fluctuation in the room is reduced while reducing the air flow feeling in winter. The ratio of the wind speed component can be freely adjusted, for example, by reducing the angle of the rotor blade 5 to increase the rotational speed of the rotor blade 5 and increasing the wind speed component in the rotation direction.

  Further, the angle of the moving blade 5 can be changed by a signal from the angle control unit 14 according to the buoyancy generated by the difference in air temperature between the indoor upper part and the indoor lower part, and a wind speed component suitable for the indoor environment can be generated.

  As described above, according to the seventh embodiment of the present invention, since the temperature gradient caused by heating in winter can be corrected at a slow wind speed, a comfortable indoor environment can be formed without feeling a sense of airflow. .

(Embodiment 8)
First, the configuration of the eighth embodiment will be described.

  As shown in FIG. 12 (a), two air blowing means 20 are installed at the center of the ceiling surface of the room 19 and are blown obliquely downward in the side surface direction of the room 19.

  Further, as shown in FIG. 12B, the air blowing means 20 has an axial fan 22 and an electric motor 23 inside the housing 21, sucks air from the suction port 24, and blows air from the blower outlet 25. It has a configuration like this. Moreover, the attachment means 26 which attaches the housing | casing 21 of the ventilation means 20 to a ceiling surface is installed.

  Next, the operation of the eighth embodiment will be described.

  As shown by the arrows in FIG. 12A, the air flow temperature sucked from the air blowing means 20 by blowing out the air flow obliquely downward from the air blowing means 20 with respect to the temperature gradient generated in the vertical direction of the room 19 due to heating. Since the difference between the temperature of the air flow blown out from the air blowing means 20 is reduced and the buoyancy effect received by the air flow blown out from the air blowing means 20 can be suppressed, the air can be blown against the buoyancy at a slow wind speed. it can.

  Further, by blowing out an air flow obliquely downward from the blower means 20 to form an air flow that largely swirls the entire room 19 in the vertical direction, the temperature gradient generated in the room 19 is changed to the upper, middle and lower portions of the room 19. By correcting in steps as described above, the temperature gradient in the room 19 can be suppressed with a low wind speed.

  As described above, according to the eighth embodiment of the present invention, since the temperature gradient generated by heating in winter can be corrected at a slow wind speed, a comfortable indoor environment can be formed without feeling a sense of airflow. .

(Embodiment 9)
First, the configuration of the ninth embodiment will be described.

  In FIG. 13, the same components as those in the eighth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 13, four air blowing means 20 are installed on the wall surface of the room 19 and are blown obliquely upward in the side surface direction of the room 19.

  The blower unit 20 includes an axial blower 22 and an electric motor 23 inside the housing 21, and is configured to suck air from the suction port 24 and blow out air from the blower outlet 25. Moreover, the attachment means 26 which attaches the housing | casing 21 of a ventilation means to a wall surface is installed.

  Next, the operation of the ninth embodiment will be described.

  As shown by the arrows in FIG. 13, the air flow temperature sucked from the air blowing means 20 by blowing out the air flow obliquely upward from the air blowing means 20 with respect to the temperature gradient generated in the vertical direction of the room 19 by heating, and the air blowing means Since the difference between the airflow temperature blown out from the airflow 20 and the airflow blown out from the air blowing means 20 can be suppressed, the air can be blown against the buoyancy at a low wind speed.

  Further, by blowing an airflow obliquely upward from the blower means 20 to form an airflow that largely swirls the entire interior of the room 19, the temperature gradient generated in the interior of the room 19 can be changed to the upper part, the middle part, and the lower part of the room 19. By correcting in steps, the temperature gradient in the room 19 can be suppressed with a low wind speed.

  As described above, according to the ninth embodiment of the present invention, a temperature gradient generated by heating in winter can be corrected at a slow wind speed, so that a comfortable indoor environment can be formed without feeling a sense of airflow. .

  The air stirrer according to the present invention can stir indoor air with a small amount of air, so that it is possible to provide a comfortable indoor environment without the residents feeling a sense of airflow in winter. It is useful as various blower devices used for the purpose of stirring air.

DESCRIPTION OF SYMBOLS 1 Air blow means 2 Rotating shaft 3 Electric motor 4 Rotor 5 Rotor blade 6 Attachment means 7 Wind direction change plate 8 Groove 9 First temperature detection means 10 Rotational speed control part 11 Stator blade 12 Auxiliary wing 13 Second temperature detection means 14 Angle Control unit 15 Angle changing means 16 Angle changing motor 17 First power transmitting means 18 Second power transmitting means 19 Indoor 20 Air blowing means 21 Housing 22 Axial flow fan 23 Electric motor 24 Suction port 25 Air outlet 26 Mounting means

Claims (15)

At least one air blowing means provided on the wall surface and / or ceiling surface of the room, and mounting means for attaching the air blowing means to the wall surface and / or the ceiling surface, and the air flow blown from the air blowing means to the wall surface An air stirrer characterized by forming an air flow that swirls the entire room in a diagonally downward direction or a diagonally upward direction. The air blowing means includes an electric motor that rotates around a rotating shaft, a rotating body that includes all or part of the electric motor, and a plurality of moving blades that are fixed to the electric motor or the rotating body, The attachment means is an air agitation device that fixes one end of the rotating shaft to the ceiling surface side, and the moving blades rotate together with the electric motor to stir room air. The air stirrer according to claim 1, wherein the air stirrer is converted into a rotating direction of the moving blade. The air agitation device according to claim 1 or 2, wherein an inclination angle on an outer peripheral side of the moving blade is larger than an inclination angle on an inner peripheral side of the moving blade. The air stirrer according to claim 3, wherein the inclination angle gradually increases from the inner peripheral side to the outer peripheral side of the moving blade. The air stirrer according to any one of claims 1 to 4, wherein a blade area on the outer peripheral side is larger than a blade area on the inner peripheral side of the moving blade. The air agitating device according to any one of claims 1 to 5, further comprising wind direction changing means on the moving blade. The air stirrer according to claim 6, wherein the wind direction changing means is a plate that is fixed substantially vertically from an inner peripheral side front edge to an outer peripheral side rear edge of the moving blade. The air stirrer according to claim 6, wherein the wind direction changing means is a groove extending from an inner peripheral front edge to an outer peripheral rear edge of the moving blade. The air stirrer according to any one of claims 1 to 8, wherein an outer peripheral side rear edge of the moving blade extends toward a downstream side in a rotation direction of the moving blade. 10. The air agitation device according to claim 1, wherein the rotational speed is increased in a rotation direction when the moving blades pressurize an air flow in a ceiling surface direction. A first temperature detection means for detecting an air temperature in the upper part of the room and an air temperature in the lower part of the room, and a rotation speed control unit for calculating the difference between the air temperature in the upper part of the room and the lower part of the room to control the rotation speed of the electric motor; The air stirrer according to claim 10, characterized by comprising: The air agitating device according to any one of claims 1 to 11, further comprising angle changing means for changing an angle of the moving blade. A second temperature detecting means for detecting an air temperature in the upper part of the room and an air temperature in the lower part of the room; and an angle control part for controlling the angle changing means by calculating a difference between the air temperature in the upper part of the room and the lower part of the room. The air agitating device according to claim 12, comprising: 14. The air agitation device according to claim 1, further comprising a stationary blade that converts a radial wind velocity component into a rotational wind velocity component in an outer direction of the moving blade. The air stirrer according to any one of claims 1 to 14, wherein an auxiliary blade in a vertical direction is provided at an outer peripheral end portion of the moving blade.

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