JPH11108429A - Diffuser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diffuser which prevents a larger scale of an air conditioner by speeding up the mixing and diffusion of an air current for higher air conditioning capacity to allow arranging thereof near a dwelling area and enables equalization of the arrival of the air current by eliminating the biasing of the blowing air current while reducing restriction in the installation with a compact designing. SOLUTION: In a diffuser 1, a diffuser opening part is formed in a shape of a roughly cylindrical body bent protruding from an installation surface 10 and separated from the installation surface 10 to allow inflow of air from behind the diffuser opening part for a larger amount of induced air by the current of the air. As a result, an air conditioning is accomplished in a short time by speeding up mixing with air in a space desired for air conditioning while the air current is evenly blown out toward a plurality of specified directions. This enables the air current to evenly reach a dwelling area accurately even from near the area to eliminate the need for arranging a diffuser and a duct on the ceiling or at an upper part of a wall surface thereby achieving a larger scale and a lower cost of an air conditioner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air outlet device for surely supplying supplied conditioned air to a predetermined location in a wide space for air conditioning.

[0002]

2. Description of the Related Art Conventionally, an air outlet device is provided facing an indoor space to be air-conditioned, and is used for blowing conditioned air supplied through a duct into the indoor space. Among them, the nozzle type outlet device has been widely used when the indoor space is large because the reach of the conditioned air can be increased. FIG. 4 shows an example of this nozzle type outlet device.
In FIG. 4, the conventional outlet device 100 has a configuration formed of a substantially cylindrical body provided on a wall 50, connected to a duct 51, and supplied with conditioned air.

In addition to the above, when conditioned air is blown out in a predetermined direction other than a direction perpendicular or parallel to a ceiling or a wall, a pan curl bar that blows out conditioned air with the air outlet directed in a predetermined direction. An outlet device called a mold has been used conventionally. FIG. 5 shows an example of another conventional outlet device. In FIG. 5, another conventional outlet device 200 is formed of a substantially spherical body which is disposed in a ceiling or a wall and supplied with conditioned air, and has a cylindrical nozzle portion 201a extending to the indoor blowing side. Open frame 2 made
01, and a support 202 disposed outside the opening frame 201. The opening frame 201 is held by the support 202 in a freely adjustable direction, and the airflow blown out from the outlet at the tip of the nozzle 201a. Is directed to a predetermined direction.

[0004]

SUMMARY OF THE INVENTION Since the conventional outlet device is constructed as described above, in the former,
Although the airflow is strong and the reach is long, the airflow is limited to only the air in front of the wall because the air outlet is located on almost the same plane as the wall, and the amount of air is small, and the indoor air And it takes a long time to mix air with air, and there is a problem that air conditioning cannot be performed in a short time.

[0005] In the latter case, the size of the opening frame 201 is larger than necessary compared to the size of the blow-out port. I had. In addition, since the airflow path is forcibly bent, the airflow to be blown is biased on the bending outer side and the bending inner side, and the airflow distribution is not uniform, and the airflow is not evenly blown out. There was a problem that the air-conditioning ability was significantly different depending on the location.

Further, when the air conditioning target space in which these air outlet devices are disposed is a large space area, in order to perform air conditioning evenly over a wide living area, a mixing period of the conditioned air and the indoor air is required. It is necessary to arrange air outlets above the wall and ceiling so that air can be taken sufficiently, and to blow out a large amount of airflow from the air outlets.Therefore, incidental facilities such as ducts leading to each air outlet have a large space. There is a problem that it becomes large-scale and it becomes difficult to arrange it. In particular, in the case of cooling, if the air outlet and the duct are installed on the ceiling to make sure that the cool air reaches the living area by making full use of the descending action of the cool air, the duct equipment becomes a remarkably long path. Therefore, there is a problem that the cost is increased in addition to the difficulty of the installation work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The present invention has been made to improve the air-conditioning capability by accelerating the mixing and diffusion of air currents, and can be installed near a residential area, thereby preventing the air-conditioning equipment from being enlarged. It is another object of the present invention to provide an air outlet device which can equalize the arrival of the air flow by eliminating the bias of the air flow to be blown out, and which is compact and has less restrictions on installation.

[0008]

According to the present invention, there is provided an air outlet device, comprising: a bent tube portion bent from an inlet opening to which air conditioning gas is supplied and directed in a predetermined blowing direction; It is formed of a substantially cylindrical body including a distal end cylindrical portion that is in communication with and is parallel to the blowing direction, and the substantially cylindrical body is disposed so as to protrude into the air-conditioning target space. Thus, according to the present invention, the outlet device is formed as a bent substantially cylindrical body protruding from the installation surface, and the air outlet is separated from the installation surface to allow air to flow in from the rear of the air outlet. Since the amount of air induced by the airflow can be increased, mixing with the air in the space to be air-conditioned can be accelerated, and air conditioning can be performed in a short time.

[0009] The outlet device according to the present invention, if necessary,
A plurality of substantially cylindrical bodies forming the air outlet device are arranged so as to protrude into the air-conditioning target space while changing the blowing direction with respect to each other. As described above, according to the present invention, a plurality of substantially cylindrical bodies forming an air outlet device are provided, and the airflow can be uniformly blown out in a plurality of predetermined directions. The air-conditioning equipment can reach the area uniformly, and there is no need to arrange outlets and ducts on the ceiling or the upper part of the wall, so that the air conditioning equipment can be reduced in size and cost.

[0010] The outlet device according to the present invention, if necessary,
A rough surface having a large number of irregularities is formed on a bent inner peripheral portion having a small radius of curvature on the inner surface of the bent cylindrical portion. As described above, according to the present invention, the bent inner peripheral side portion of the inner surface of the bent cylinder portion for directing the airflow in a predetermined direction is made to be a hydrodynamic rough surface, and the separation of the air flow on the inner peripheral side of the bent cylinder portion, the secondary flow Generation is suppressed to prevent stagnation of the airflow, and the airflow can be evenly balanced on the inner peripheral side and the outer peripheral side, so that a sufficient reaching distance in the blowing direction can be secured.

In addition, in the blow-out device according to the present invention, if necessary, the rough surface formed in the bent inner peripheral portion having a small radius of curvature may be uneven as the bending angle of the bent tube portion increases. Is formed with a large roughness. Thus, according to the present invention, by changing the roughness of the bending inner peripheral side portion according to the bending angle of the bending cylinder portion, by setting an appropriate roughness corresponding to the ease of peeling off the airflow from the wall surface, It is possible to make the air volume balance at the blowout opening more uniform,
The blown airflow is less likely to be deviated in the reaching range, and the efficiency of air conditioning can be further increased.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An outlet device according to an embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory view of an arrangement state of an outlet device according to the present embodiment, FIG. 2 is a side view and a bottom view of the outlet device according to the present embodiment, and FIG. 3 is an outlet according to the present embodiment. 1 shows a longitudinal section of the device.

In each of the above figures, an air outlet device 1 according to the present embodiment is a cylindrical body composed of a bent cylindrical portion 3 and a distal end cylindrical portion 4. A non-woven fabric of high-strength fiber such as carbon fiber or glass fiber is made of a special plastic. (Fiber) coated and impregnated with
Reinforced Plastics) are formed as hollow cylinders, and a plurality of the cylinders are rotatably arranged on the peripheral side surface of the vertical duct 10 having a rectangular cross-section and projecting vertically from the floor of the indoor space. It is configured to take in conditioned air, guide the airflow in a direction inclined by about 40 ° with respect to the peripheral side surface of the vertical duct 10, and blow it out into the indoor space. Examples of the special plastic constituting the FRP cylinder constituting the outlet device 1 include unsaturated polyester resins, epoxy resins, vinyl ester resins, and other resins having an ester group not in the main chain but in a side chain (American cyanamide). Hexene-1)
And a copolymer of maleic anhydride and glycidyl methacrylate and styrene in the presence of styrene.

An inlet opening 2 for connecting a vertical duct 10 is formed at one end of the cylindrical body forming the outlet device 1, and the flow of conditioned air is gradually started from the inlet opening 2 as a starting end.
A bent tube portion 3 is provided for guiding in a direction inclined by about 40 ° with respect to the peripheral side surface of the airbag. Further, conditioned air is blown from the end of the bent tube portion 3 by a length L substantially equal to the diameter D of the inlet opening 2. A distal end cylindrical portion 4 which extends straight in the discharge direction and has a discharge opening 5 at the distal end on the indoor discharge side is provided. On the inner surface of the bent cylindrical portion 3, the special plastic is applied from the back side of the portion in contact with the airflow of the high-strength fiber on the inner side of the bend having a small radius of curvature, or impregnated with the special plastic while leaving the portion in contact with the airflow. By forming the cylindrical body, the high-strength fibers are exposed to the surface to form a hydrodynamically rough surface 3a, and on the other hand, on the bent outer peripheral side having a large radius of curvature, a smooth surface covered with plastic is formed. ing. The plurality of cylinders forming the outlet device 1 are arranged on the vertical duct 10 with their directions adjusted so that the blowing directions are different from each other.

Next, the air blowing operation of the air outlet device having the above-described configuration will be described. The conditioned air sent from the vertical duct 10 enters the inlet opening 2, is guided in an oblique direction gradually inclined by about 40 ° along the bent tubular portion 3, passes through the tip tubular portion 4, and enters the room through the outlet opening 5. Blow out.

In general, when a bent portion is present in the airflow channel, the airflow separates from the wall surface on the inner peripheral side of the bent portion and becomes a jet, and a secondary flow is generated around the jet, so that the flow loss increases and the flow rate increases. It has the property of decreasing as it goes inward. However, the bent inner peripheral side of the inner surface of the bent cylindrical portion 3 is a rough surface 3a, and the rough surface 3a disturbs the boundary layer to make the boundary layer unstable and promote transition to turbulent flow. Since the airflow is less likely to be separated by preventing energy loss, the flow loss is reduced and there is no stagnation of the airflow.
Unbalance of the flow rate is less likely to occur between the outer peripheral side and the inner peripheral side. Further, since the airflow is stabilized through the straight distal end cylindrical portion 4, the airflow from the blowout opening 5 becomes uniform and a sufficient reach distance can be secured. Air conditioning can be performed reliably.

Although the blown air current draws indoor air, it can draw air not only in front of the blow-out opening 5 but also beside and behind the blow-out opening 5, and the mixing with the room air is rapid. And the air conditioning effect can be exhibited in a short time. In addition to this, the conditioned air is uniformly blown out from the plurality of blowout openings 5 in another direction,
An air conditioning effect can be given evenly to the living area.

As described above, the outlet device according to the present embodiment is formed as a cylindrical body protruding from the wall surface, the inner surface of the inner surface of the bent cylindrical portion 3 is roughened, and the distal end cylindrical portion 4 is formed. By appropriately securing the length, the airflow can be blown out while the airflow balance in each of the plurality of blowout openings 5 having different directions is made uniform, and the amount of induced air is increased so that mixing with the indoor air can be performed quickly. In addition, the air is diffused evenly in the living area while ensuring a sufficient reaching distance in the blowing direction, and the blown airflow is less likely to be deviated in the reaching range, so that the air conditioning efficiency can be greatly improved. Further, it is a group of simply bent compact cylinders that are arranged to protrude from the vertical duct 10,
By arranging it near the residential area, the air conditioning equipment as a whole can be reduced in size and cost. In addition, the cylinder has high heat insulation
Because it is made of RP, dew condensation hardly occurs on the outer surface of the cylindrical body even in the case of cooling.

In the outlet device according to the embodiment, the blowing direction is set to about 40
It is configured to be inclined at an angle of 30 °, but is not limited thereto, and may be configured to blow at an angle of 20 ° or 60 ° with respect to the circumferential side surface of the vertical duct 10 by changing the setting of the bending angle of the bending cylindrical portion 3. It is also possible to obtain an air conditioning capability according to the target space for air conditioning. In addition, the bending angle 20
In the case of the bent cylinder portion 3 set at an angle of 40 °, the roughness of the rough surface 3a is formed to be larger (coarse) than in the case of the bent cylinder portion 3 having a bending angle of 40 °, and further set at the bending angle of 60 °. In the case of the bent tube portion 3 formed, the roughness of the rough surface 3a can be formed smaller (smoothly) than in the case of the bent tube portion 3 having a bending angle of 40 °. By changing the roughness of the rough surface 3a in accordance with the bending angle of the bending cylinder portion 3 in this manner, it is possible to blow out the air from the blowing opening 5 more uniformly.

In the outlet device according to the embodiment, the rough surface 3a formed on the bent cylinder portion 3 is formed as an irregular rough surface with high-strength fibers exposed on the surface. Alternatively, it may be configured as a mesh-like uneven surface. Further, the outlet device 1 may be a plastic hollow cylinder having a bent portion in addition to the FRP cylinder, and a nonwoven fabric may be provided on the inner peripheral side of the bent portion on the inner surface of the cylinder.

[0021]

As described above, in the present invention, the air outlet device is formed as a bent substantially cylindrical body projecting from the installation surface, and the air outlet is separated from the installation surface so that the air from the rear of the air outlet is removed. By allowing the air to flow in and increasing the amount of air induced by the airflow, there is an effect that mixing with the air in the air-conditioning target space is accelerated and air conditioning can be performed in a short time. Further, in the present invention, a plurality of substantially cylindrical bodies forming an air outlet device are arranged, and the airflow can be uniformly blown out in a plurality of predetermined directions. The air conditioner can be uniformly reached, and there is no need to dispose the outlet and the duct on the ceiling or the upper part of the wall surface, and the air conditioning equipment can be reduced in scale and cost. Also,
In the present invention, the length protruding from the installation surface such as a ceiling or a wall while making the length of the tip cylindrical portion at least substantially the same as or shorter than the diameter of the inlet opening to make the air flow balance in the outlet opening uniform. Has the effect of being as short as possible. Further, in the present invention, by changing the roughness of the bent inner peripheral side portion in accordance with the bending angle of the bent cylindrical portion, by setting an appropriate roughness corresponding to the ease of peeling off the airflow from the wall surface, the outlet opening. It is possible to make the air flow balance in the section more uniform, and it is possible to prevent the airflow to be blown out from being deviated in the reaching range and to further enhance the efficiency of air conditioning.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an arrangement state of an outlet device according to an embodiment of the present invention.

FIG. 2 is a side view and a bottom view of the outlet device according to one embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the outlet device according to the embodiment of the present invention.

FIG. 4 is a schematic sectional view of the configuration of a conventional outlet device.

FIG. 5 is a schematic configuration diagram of another conventional outlet device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 100, 200 Blow-out apparatus 2 Inlet opening part 3 Bent tube part 4 Tip tube part 5 Blow-out opening part 10 Vertical duct 50 Wall 51 Duct 201 Opening frame 201a Nozzle part 202 Support

Claims (4)

[Claims] 1. A bent tube portion bent from an inlet opening to which an air conditioning gas is supplied and directed in a predetermined blowing direction, and a tip tube portion communicating with the bent tube portion and parallel to the blowing direction. An air outlet device characterized in that it is formed of a substantially cylindrical body made of: and is disposed so as to protrude into the air-conditioning target space. 2. The air outlet device according to claim 1, wherein the plurality of substantially cylindrical bodies are arranged so as to protrude into an air-conditioning target space by changing a blowing direction of each other. apparatus. 3. The outlet device according to claim 1, wherein a rough surface having a large number of irregularities is formed in a bent inner peripheral portion having a small radius of curvature on an inner surface of the bent cylindrical portion. Outlet device. 4. The blow-off device according to claim 1, wherein an angle of bending of the bent cylindrical portion of the rough surface formed in the bent inner peripheral portion having a small radius of curvature is increased. The outlet device is characterized in that the roughness of the irregularities is increased as a result.