JP7423362B2 - Air outlet device - Google Patents

Description

The present invention relates to an air outlet device that is installed as part of a large space air conditioning system and has a function of blowing out conditioned air supplied from an air conditioner toward a space to be air-conditioned.

The design method for air conditioning equipment in indoor competition stadiums called arenas, so-called large space air conditioning equipment, is to consider the airflow transfer distribution when the air volume supplied from the air conditioner is the design air volume (100%). It is common to design products and sizes that satisfy the airflow reach. However, in this case, if the air volume supplied from the air conditioner changes (for example, decreases from 100% to 50%), the airflow reach will also change accordingly, making the airflow distribution unsatisfactory and providing comfortable air conditioning. This may not be possible.

On the other hand, various structures have been proposed for air outlet devices that are connected to a duct that conveys conditioned air supplied from an air conditioner and have the function of blowing out conditioned air toward a space to be conditioned. However, as something related to the present invention, for example, there is an "air blowing device" described in Patent Document 1. Further, although the technical field to which the invention pertains is slightly different, there is a "fire damper device" described in Patent Document 2, for example, which is related to the present invention.

The air blowing device described in Patent Document 1 is an air blowing device that includes a housing having an air flow path and a blowing nozzle, and a flow rate adjustment mechanism that can adjust the amount of air flowing through the air flow path. The blowout nozzle has an inlet section that extends from the upstream end to the downstream direction while keeping the flow path area constant, and a flow path area that increases as it approaches the downstream end while extending from the inlet section in the downstream direction. The air flow path has a main flow path and a sub flow path connected to the upstream end of the blow-off nozzle, and the main flow path is located at the center of the flow path defined by the inlet portion. The flow rate adjustment mechanism includes a main flow path and a sub flow path that are open to the main flow path, and the sub flow path is adjacent to the main flow path and opens to the outer periphery of the flow path defined by the inlet portion, and the flow rate adjustment mechanism and the amount of air flowing through the sub-flow path can be adjusted independently of each other.

The damper device described in Patent Document 2 is a damper device in which an inner tube is inserted into an outer tube while maintaining a predetermined gap to form a ventilation passage inside and outside, and the inside and outside ventilation passages are automatically closed. A valve case is interposed in a part of the pipe, and a means for blocking an external ventilation passage between the valve case and the inner pipe and an internal ventilation passage in the vicinity of the external ventilation passage is installed. The device is characterized in that it is configured to operate based on output.

JP2016-33441A Japanese Patent Application Publication No. 2000-14819

The "air blowing device" described in Patent Document 1 has the advantage that it can be downsized without impairing its function as an air blowing device (function of adjusting flow direction and flow rate). However, it is not suitable for large-space air conditioning equipment, and when the volume of conditioned air supplied from the air conditioner decreases, the wind speed decreases, making it impossible to secure the desired range.

Furthermore, the "fire damper device" described in Patent Document 2 has a function of automatically and simultaneously shutting off internal and external ventilation passages that form a dual pipe structure consisting of an inner pipe and an outer pipe. However, it does not have a function to ensure the desired range when the volume of conditioned air supplied from the air conditioner decreases.

Therefore, the problem to be solved by the present invention is that in large space air conditioning equipment, even if the air conditioning load fluctuates due to an increase or decrease in the number of occupants, and the supplied air volume fluctuates, the conditioned airflow can reach the desired point. An object of the present invention is to provide an air outlet device that can perform air conditioning according to the air conditioning load.

The outlet device according to the present invention includes:
An inlet that is connected to a duct that conveys conditioned air supplied from an air conditioner and allows the conditioned air to flow in, a flow path through which the conditioned air that has flowed in from the inflow port, and a flow path through which the conditioned air that has flowed through the flow path is connected. A cylindrical casing having an outflow port that causes the flow to flow toward the air-conditioned space;
An outer flow path formed between the casing and the middle cylinder by concentrically arranging a middle cylinder with a smaller diameter than the casing within the casing, and an inner flow path formed within the middle cylinder;
a nozzle provided on the outlet side of the casing,
two half-doughnut-shaped blades provided in the casing concentrically with the casing for opening and closing the outer flow path;
two support shafts provided along the diameter direction of the casing to rotatably support the blades;
It is characterized by comprising a drive mechanism provided outside the casing to rotate the support shaft in the forward and reverse directions.

With this configuration, the drive mechanism rotates the two half-doughnut-shaped blades in the forward and reverse directions to open and close the external flow path formed between the inner cylinder and the casing, thereby preventing external flow at the rated air volume. It is possible to set the air flow path and the inner flow path so that the conditioned air passes through, and when the air volume decreases, it is possible to set only the inner flow path so that the conditioned air flows through. Even if the air volume decreases, the speed of the conditioned air flowing out from the outlet into the air-conditioned space does not decrease, and the desired reach distance can be ensured.

Therefore, in a situation where the volume of conditioned air flowing in the casing is increased or decreased based on an increase or decrease in the air conditioning load in the air-conditioned space, even if the volume decreases, it is possible to obtain the same distance as when the air volume is rated. Since the conditioned air can reach the desired point, comfort will not be compromised even if the air conditioning load in the target space changes. Moreover, when the air conditioning load is reduced, the air conditioning can be performed using the minimum necessary conditioned air, so energy savings can be achieved.

In the outlet device, the blade can maintain a state in which it is in contact with an end of the middle cylinder on the inlet side.

With this configuration, it is possible to maintain the closed state of the outer flow path between the middle cylinder and the casing, so when the blades are closed, the flow of conditioned air to the outer flow path is stopped, and the conditioned air is It is possible to reliably guide the air into the middle cylinder (inner flow path) and allow the conditioned air to flow only through the inner flow path.

In the air outlet device, the rotation range of the blade around the support shaft is less than 90 degrees from a horizontal state, and the end of the middle cylinder on the inflow port side is in contact with the blade when the blade comes into contact with the blade. The end of the middle cylinder on the inlet side may be inclined so that the inner cylinder can maintain an inclined attitude of less than 90 degrees with respect to the horizontal state.

With this configuration, when the blades are closed, the blades can maintain an inclined posture with respect to the central axis of the inner flow path, making it easier to guide the conditioned air into the middle cylinder (inner flow path), and when the blades are closed. Pressure loss can be reduced compared to maintaining a 90 degree posture.

In the outlet device, the support shafts of the blades can be arranged in the casing so as to be horizontal and parallel to each other.

With this configuration, it is possible to minimize the turbulence that occurs in the air-conditioned airflow flowing inside the casing due to the presence of the two support shafts, and the air-conditioning that is supplied to the air-conditioned space can be minimized. Disturbance of the airflow can be prevented and the conditioned airflow can be reliably delivered to the desired position.

In the air outlet device, the nozzle may be provided with a wind direction adjustment mechanism.

With such a configuration, it is possible to adjust the direction of the conditioned air that is supplied toward the air-conditioned space, so that the conditioned air can be directed to a desired point depending on the situation in the air-conditioned space. be able to.

In the outlet device, the nozzle may be provided with a dew condensation prevention means.

With such a configuration, it is possible to prevent dew condensation from occurring on the nozzle surface cooled by conditioned air, especially during cooling. As the dew condensation prevention means, for example, a dew condensation prevention member can be provided on the nozzle surface.

According to the present invention, in large space air conditioning equipment, even if the air conditioning load fluctuates due to an increase or decrease in the number of accommodated people and the supplied air volume fluctuates, the conditioned air flow can reach the desired point and the air conditioning can be adjusted according to the air conditioning load. It is possible to provide an air outlet device that can perform the following steps.

FIG. 2 is a partially omitted perspective view of the air outlet device according to the embodiment of the present invention as seen diagonally from above when the blades are in a fully open state. FIG. 2 is a partially omitted right side view showing a state in which the air outlet device shown in FIG. 1 is attached to a wall of an air conditioning target area. FIG. 2 is a partially omitted front view of the air outlet device shown in FIG. 1. FIG. 4 is a partially omitted sectional view taken along line BB in FIG. 3. FIG. It is a partially omitted enlarged view of FIG. 4. FIG. 2 is a partially omitted rear view of the air outlet device shown in FIG. 1. FIG. FIG. 2 is a partially omitted perspective view of the air outlet device shown in FIG. 1 viewed from diagonally above the rear surface. FIG. 2 is a partially omitted perspective view of the air outlet device shown in FIG. 1 viewed from diagonally below the rear surface. FIG. 2 is a partially omitted perspective view of the air outlet device shown in FIG. 1 as seen diagonally from above when the blades are in a fully closed state. 10 is a partially omitted front view of the air outlet device shown in FIG. 9. FIG. 11 is a partially omitted sectional view taken along line CC in FIG. 10. FIG. 12 is a partially omitted enlarged view of FIG. 11. FIG. 10 is a partially omitted rear view of the air outlet device shown in FIG. 9. FIG. FIG. 10 is a partially omitted perspective view of the air outlet device shown in FIG. 9 when viewed obliquely from above on the back side. FIG. 10 is a partially omitted perspective view of the air outlet device shown in FIG. 9 as viewed obliquely from below on the back side. FIG. 2 is a diagram showing the results of an airflow attainment test using the outlet device shown in FIG. 1. FIG.

Hereinafter, an air outlet device 100 that is an embodiment of the present invention will be described based on FIGS. 1 to 16.

First, the air outlet device 100 when the blades 18 and 19, which will be described later, are in a fully open state will be described based on FIGS. 1 to 8. Although there are no limitations on how to use the outlet device 100, for example, as shown in FIG. 2, it can be used by being attached to an opening 2 provided in a wall 1 of an air-conditioned space (not shown).

As shown in FIGS. 1 to 4, the outlet device 100 includes a cylindrical casing 10 having an inlet 11 and an outlet 13, a middle cylinder 15 arranged concentrically within the casing 10, and a nozzle 40. , two half-doughnut-shaped blades 18 and 19, two support shafts 20 and 21, and a drive mechanism 22.

The inlet 11 of the casing 10 is connected to a duct 3 that conveys conditioned air supplied from an air conditioner (not shown), and the conditioned air flowing through the duct 3 flows into the casing 10 from the inlet 11. . A flow path 12 is provided in the casing 10 through which the conditioned air flowing in from the inlet 11 flows toward the outlet 13 along the axis 10c, and the conditioned air flowing through the flow path 12 is directed into the air-conditioned space. An outflow port 13 for flowing out in the direction of arrow A is provided 180 degrees opposite to the inflow port 11. A nozzle 40 is provided at the outlet 13 of the casing 10.

Inside the casing 10, an outer flow path 16 is formed between the casing 10 and the middle cylinder 15 by arranging a middle cylinder 15 having a smaller diameter and a shorter length in the axial direction 10c than the casing 10 in a concentric manner. An inner flow path 17 is formed within the inner flow path 15 .

Inside the casing 10, two half-doughnut-shaped blades 18 and 19 are provided concentrically with the casing 10 in order to open and close the outer flow path 16 formed so as to surround the middle cylinder 15. , 19 are rotatably supported, two support shafts 20 and 21 are provided along the direction (approximately diametrical direction) across the casing 10. A drive mechanism 22 for rotating these support shafts 20 and 21 in the normal and reverse directions is provided outside the casing 10 (at the right side near the back).

As shown in FIGS. 1 and 2, a pointer 22b indicating the opening degree of the blades 18 and 19 is provided on the surface of the housing 22a of the drive mechanism 22. In this embodiment, in FIG. 2, when the pointer 22b is tilted to the left, it indicates that the blades 18 and 19 are fully open (horizontal state), and when the pointer 22b is tilted to the right, the blades 18 and 19 are This indicates that it is in a fully closed state (tilted state).

As shown in FIGS. 4 and 5, the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side are both located in the casing 10 closer to the outlet 13 than the inlet 11. The end 15a of the middle cylinder 15 located above the support shafts 20 and 21 is inclined so that it approaches the outlet 13 as it approaches the axis 10c from the top 15d of the middle cylinder 15. , 21 is inclined so that it approaches the outlet 13 as it approaches the axis 10c from the lowest part 15e of the middle cylinder 15. That is, the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side are inclined so that they approach each other as they approach the outlet 13.

An end 15a of the middle cylinder 15 is located closer to the outlet 13 than an end 15b. In the portion of the middle cylinder 15 on the outlet 13 side, a notch 15c recessed toward the outlet 13 than the ends 15a and 15b is formed at a portion where the end 15a and the end 15b intersect.

As shown in FIGS. 4 and 5, the support shafts 20 and 21 are arranged horizontally and parallel to each other with a predetermined distance apart in the direction of the axis 10c. The support shaft 20 is arranged near the outflow port 13, and the support shaft 21 is arranged near the inflow port 11. When the blades 18 and 19 are in the open state, the base end 18b side of the blade 18 is fixed to be located above the support shaft 20, and the base end 19b side of the blade 19 is located below the support shaft 21. It is fixed like that. The blades 18 and 19 are arranged parallel to each other with the axis 10c in between, and the base ends 18b and 19b of the blades 18 and 19 are located within the region of the notch 15c.

The tip opening of the nozzle 40 provided at the outlet 13 of the casing 10 (the portion located at the tip in the direction of arrow A in FIG. 1) has a bell mouth shape, and the inside of the nozzle 40 has a cylindrical shape. A middle cylinder 41 is arranged coaxially with the axis 10c. A wind direction adjustment mechanism is formed by arranging the middle cylinder 41 so as to be tiltable about a support shaft 42 provided in a direction perpendicular to the axis 10c. By changing the inclination angle of the middle cylinder 41 about the support shaft 42, the direction of the conditioned air flowing out from the nozzle 40 can be adjusted. Furthermore, a dew condensation prevention member 44 is provided on the surface of the nozzle 40 as dew condensation prevention means. Although the dew condensation prevention member 44 is not limited, for example, a heat insulating material made of foamed synthetic resin is suitable. When a heat insulating material is used as the dew condensation prevention member 44, a cover 45 can be provided on the surface of the heat insulating material with the same finish (for example, painting) as the surface of the nozzle 40, as appropriate.

As shown in FIG. 5, the rotation range R of the blades 18 and 19 about the support shafts 20 and 21 is less than 90 degrees from the horizontal state (60 degrees in this embodiment). As shown in FIGS. 11 and 12, which will be described later, the blades 18 and 19 are in contact with the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side (the blades 18 and 19 are at an angle of less than 90 degrees with respect to the horizontal state). (a state tilted at 60 degrees in this embodiment) can be maintained.

The two half-doughnut-shaped blades 18 and 19 close the outer flow path 16 around the middle cylinder 15 by contacting the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side, and the inside of the middle cylinder 15 is closed. It has a function of guiding conditioned air to the inner flow path 17. Furthermore, when the blades 18 and 19 abut against the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side at an inclination angle of less than 90 degrees, in order to maintain that state, the inner peripheral edge 18c of the blades 18 and 19 is , 19c and the outer peripheral edges 18d, 19d each have a semi-elliptical shape in plan view (see FIGS. 7 and 8).

Furthermore, as shown in FIGS. 14 and 15, the inner peripheral edges 18c and 19c and the outer peripheral edges 18d and 19d of the blades 18 and 19 are each semi-elliptical in plan view, so that the blades When the blades 18 and 19 abut against the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side at an inclination angle of less than 90 degrees, the blades 18 and 19 touch the ends of the middle cylinder 15 at an inclination angle of less than 90 degrees. The portions 15a, 15b and the inner surface of the casing 10 can be closed without any gap.

As shown in FIGS. 1 to 8, when the blades 18 and 19 of the outlet device 100 are in a fully open state (horizontal and parallel state), the conditioned air that has flowed into the casing 10 from the duct 3 through the inlet 11 is It flows toward the outlet 13 through the outer flow path 16 between the casing 10 and the middle cylinder 15 and the inner flow path 17 inside the middle cylinder 15, passes through the nozzle 40, and flows out into the air-conditioned space. do.

In this case, the conditioned air flowing through the outer flow path 16 passes between the casing 43 and the middle cylinder 41 of the nozzle 40 and flows out into the air-conditioned space, and the conditioned air flowing through the inner flow path 17 flows into the air conditioned space. It flows out from the tip opening 15f of the tube 15, flows into the middle tube 41 of the nozzle 40, and flows out from the tip opening 41a of the middle tube 41 into the air-conditioned space.

Next, the air outlet device 100 when the blades 18 and 19 are in a fully closed state will be described based on FIGS. 9 to 15. When the blades 18 and 19 are in the fully closed state, the blades 18 and 19 are maintained in contact with the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side, as shown in FIGS. 11 and 12. As a result, the outer flow path 16 between the casing 10 and the middle cylinder 15 is kept closed on the inlet 11 side.

Therefore, the conditioned air that has flowed into the casing 10 from the duct 3 via the inlet 11 flows into the inner channel 17 inside the middle cylinder 15 and flows inside the inner channel 17 toward the outlet 13. , flows out from the tip opening 15f of the middle tube 15, flows into the middle tube 41 of the nozzle 40, and flows out from the tip opening 41a of the middle tube 41 into the air-conditioned space.

In this way, in the air outlet device 100, the two half-doughnut-shaped blades 18 and 19 are rotated in the normal and reverse directions by the drive mechanism 22, and the outer flow path 16 formed between the middle cylinder 15 and the casing 10 is opened. Since it can be opened and closed, it should be set so that conditioned air passes through the outer flow path 16 and the inner flow path 17 when the air volume is rated, and when the air volume is reduced, the conditioned air should be set so that only the inner flow path 17 passes through. Can be done. Therefore, even if the volume of conditioned air supplied to the inlet 11 via the duct 3 decreases, the speed of the conditioned air flowing out from the nozzle 40 to the air-conditioned space does not decrease, ensuring the desired reach distance. can do.

Therefore, the conditioned air is supplied from the duct 3 to the inlet 11 under conditions in which the volume of conditioned air flowing through the casing 10 is increased or decreased based on an increase or decrease in the air conditioning load (number of occupants) in the air-conditioned space. Even if the air volume decreases, it is possible to obtain the same distance as when the air volume is rated, and the conditioned air can reach the desired point. Therefore, even if the number of occupants in the air-conditioned space changes, comfort will not be impaired. Moreover, when the air conditioning load is reduced, the air conditioning can be performed using the minimum necessary conditioned air, so energy savings can be achieved.

In the air outlet device 100, as shown in FIGS. 11 and 12, the blades 18 and 19 can maintain a state in which they are in contact with the ends 15a and 15b of the middle cylinder 15 on the inlet 11 side. This makes it possible to maintain the closed state of the outer flow path 16 between the middle cylinder 15 and the casing 10, thereby preventing air-conditioned air from leaking into the outer flow path 16 when the blades 18 and 19 are closed. Even when the blades 18 and 19 are closed, the conditioned air can be reliably guided into the middle cylinder 15 (inner channel 17).

In the air outlet device 100, as shown in FIG. The blades 18 and 19 can maintain an inclined posture of less than 90 degrees (60 degrees) with respect to the horizontal state when the blades 18 and 19 come into contact with the ends 15a and 15b on the 11 side. In addition, when using the air outlet device 100, the blades 18 and 19 are generally set in either a horizontal state (fully open) or an inclined position of less than 90 degrees (60 degrees) (closed (fully closed)). However, the blades 18 and 19 themselves can be set to any inclined position (opening degree) within a range of less than 90 degrees (60 degrees) with respect to the horizontal state.

With such a configuration, when the blades 18 and 19 are closed, the blades 18 and 19 maintain an inclined posture with respect to the central axis (axis center 10c) of the inner flow path 17, so that the inside of the middle cylinder 15 is It becomes easier to guide the conditioned air (into the inner flow path 17), and pressure loss can be reduced compared to the case where the blades 18 and 19 are maintained in an upright position of 90 degrees when closed.

In the air outlet device 100, as shown in FIGS. 3 to 6, the support shafts 20 and 21 of the blades 18 and 19 are arranged in the casing 10 so as to be horizontal and parallel to each other. Due to the presence of the shafts 20 and 21, turbulence occurring in the conditioned airflow flowing inside the casing 10 can be minimized, preventing disturbances in the conditioned airflow supplied to the space to be conditioned, The conditioned airflow can be reliably delivered to the desired position.

In the air outlet device 100, an air direction adjustment mechanism is formed by arranging a middle cylinder 41 that is tiltable about a support shaft 42 in a casing 43 of a nozzle 40, so that air is supplied toward the air-conditioned space. It is possible to adjust the direction of the conditioned air, and the conditioned air can be directed to a desired point depending on the situation of the space to be air-conditioned.

In the outlet device 100, a dew condensation prevention member is provided on the surface of the nozzle 40 as a dew condensation prevention means for the nozzle 40, so that dew condensation generated on the surface of the nozzle 40 cooled by conditioned air is prevented, especially during cooling. be able to.

Next, based on FIGS. 16(a) to 16(c), the results of an airflow attainment test using the outlet device 100 will be described. 16(a) to (c) show conditioned air being distributed horizontally from an outlet device 100 placed at a predetermined height from the ground by changing the air volume (m ³ /h) and the opening degree of the blades 18 and 19. The state that conditioned air reaches when it is blown out is schematically shown by a parabolic curve.

In FIGS. 16(a) to (c), the vertical axis indicates the installation height (m) of the outlet device 100, and the horizontal axis indicates the horizontal distance (m) from the installation location of the outlet device 100. m) is shown. In this test, the installation height of the outlet device 100 was set to 5 (m), and the wind speed (m/s) at a position 10 (m) away from the outlet device 100 in the horizontal direction was measured. In addition, the wind speed (m/s) of the airflow reaching the living area (space from the floor surface (ground) to a height of 1.5 m) was also measured. Note that the duct size (nozzle size) φ of the outlet device 100 is 300 (mm), and the size φ of the middle cylinder 15 is 220 (mm).

FIG. 16(a) shows the conditioned air when the volume of conditioned air supplied to the outlet device 100 is "1930 (m ³ /h): 100%" and the opening degree of the blades 18 and 19 is "fully open". Indicates the state of air arrival. Looking at FIG. 16(a), the wind speed at the center of the airflow at a position 10 (m) horizontally away from the outlet device 100 and 3.6 (m) in height from the ground is 1.25 (m/s). It can be seen that Further, the wind speed at the center of the airflow at a position horizontally about 15 (m) away from the outlet device 100 and 1.5 (m) in height from the ground is 0.86 (m/s), and 0.86 (m/s). It can be seen that a wind speed of 5 (m/s) or more is ensured.

FIG. 16(b) shows the conditioned air when the volume of conditioned air supplied to the outlet device 100 is "1158 (m ³ /h): 60%" and the opening degree of the blades 18 and 19 is "fully open". Indicates the state of air arrival. Looking at FIG. 16(b), the wind speed at the center of the airflow at a position 10 (m) horizontally away from the outlet device 100 and 1.5 (m) in height from the ground is 0.65 (m/s). Although a wind speed of 0.5 (m/s) or more is ensured, the reach distance in residential areas remains at a value of 10 (m), which is different from the measured value in the case of Figure 16 (a) mentioned above. It can be seen that it has not reached this level.

That is, when the volume of conditioned air supplied to the outlet device 100 decreases to 60% compared to the case of FIG. It can be seen that the value decreases to . This indicates that when the volume of conditioned air supplied to the outlet device 100 decreases, the distance traveled by the conditioned air also decreases.

FIG. 16(c) shows the conditioned air when the volume of conditioned air supplied to the outlet device 100 is "1158 (m ³ /h): 60%" and the blades 18 and 19 are "closed (fully closed)". Indicates the state of air arrival. Looking at FIG. 16(c), the wind speed at the center of the airflow at a position 10 (m) horizontally away from the outlet device 100 and 3.6 (m) in height from the ground is 1.05 (m/s). Therefore, the wind speed at the center of the airflow at a position approximately 15 (m) horizontally away from the outlet device 100 and 1.5 (m) in height from the ground is 0.73 (m/s), and 0.5 ( It can be seen that a wind speed of 500 m/s or higher is ensured.

That is, even when the volume of conditioned air supplied to the outlet device 100 is reduced to 60% compared to the case of FIG. It can be seen that the wind speed at a position 10 (m) away from the center decreases by only about 84%. This means that by "closing" the vanes 18 and 19, even when the volume of conditioned air supplied to the outlet device 100 decreases, the same range of conditioned air as in the case of FIG. 16(a) can be ensured. It shows that it can be done.

Taking the airflow attainment test results shown in FIGS. 16(a) to 16(c) together, it can be seen that if the outlet device 100 is used as part of a large space air conditioning system, the air conditioning load may fluctuate due to an increase or decrease in the number of people accommodated. It can be seen that even if the air conditioner is used, it is possible to make the conditioned air flow reach the desired point and perform air conditioning according to the air conditioning load.

The outlet device 100 described based on FIGS. 1 to 16 is an example of the outlet device according to the present invention, and the outlet device 100 according to the present invention is similar to the outlet device 100 described above. It is not limited.

The air outlet device according to the present invention can be widely used in industrial fields such as the civil engineering and construction industry as part of large space air conditioning equipment in large-scale exhibition halls, athletic facilities, and the like.

1 Wall 2 Opening 3 Duct 10, 43 Casing 10c Axis 11 Inlet 12 Channel 13 Outlet 15, 41 Middle cylinder 15a, 15b End 15c Notch 15d Top 15e Bottom 15f, 41a Tip opening 16 Outer flow path 17 Inner flow path 18, 19 Vane 18a, 19a Tip portion 18b, 18b Base end portion 18c, 19c Inner peripheral edge 18d, 19d Outer peripheral edge 20, 21, 42 Support shaft 22 Drive mechanism 22a Housing 22b Pointer 40 Nozzle 44 Condensation Prevention member 45 Cover 100 Air outlet device R Rotation range

Claims (5)

An inlet that is connected to a duct that conveys conditioned air supplied from an air conditioner and allows the conditioned air to flow in, a flow path through which the conditioned air that has flowed in from the inflow port, and a flow path through which the conditioned air that has flowed through the flow path is connected. A cylindrical casing having an outflow port that causes the flow to flow toward the air-conditioned space;
An outer flow path formed between the casing and the middle cylinder by concentrically arranging a middle cylinder with a smaller diameter than the casing within the casing, and an inner flow path formed within the middle cylinder;
a nozzle provided on the outlet side of the casing,
two half-doughnut-shaped blades provided in the casing concentrically with the casing for opening and closing the outer flow path;
two support shafts provided along the diameter direction of the casing to rotatably support the blades;
a drive mechanism provided outside the casing to rotate the support shaft in the forward and reverse directions ;
The rotation range of the blades about the support shaft is less than 90 degrees from the horizontal state, and the end of the middle cylinder on the inlet side is at an angle of 90 degrees with respect to the horizontal state when the blades come into contact with the blades. An air outlet device characterized in that an end of the middle cylinder on the inlet side forms an inclined state so as to be able to maintain an inclined attitude of less than 1° . The air outlet device according to claim 1, wherein the blade is able to maintain a state in which the blade is in contact with an end of the middle cylinder on the inlet side. 3. The air outlet device according to claim 1, wherein the support shafts of the blades are arranged within the casing so as to be horizontal and parallel to each other. The air outlet device according to any one of claims 1 to 3 , wherein the nozzle is provided with a wind direction adjustment mechanism. The air outlet device according to any one of claims 1 to 4 , wherein the nozzle is provided with a dew condensation prevention means.

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