JP2001201162A - Blow-off hole device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blow-off hole device, where a blow-off air flow induces air near the ceiling to blow downwardly, thereby eliminating warm air residing near the ceiling to prevent adverse effects on illumination facilities, etc., and to enhance air-conditioning effect during warming of air, using other blow-off holes. SOLUTION: An inner nozzle 3 tapered toward a space under air conditioning is disposed in an outer nozzle 2, having openings 2a at the side wall, the velocity of air flow from the inner nozzle 3 is increased more than that of the air flow from the outside of the outer nozzle 2, so that the fast air flow induces the outside slow air flow to blow and air flow blown between the outer and inner nozzles induces gas near the ceiling 50 via the openings 2a to blow off downwardly. Thus warm gas does not stay near the ceiling 50 and adverse effects on illumination facilities, etc., can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle-type outlet device that blows air-conditioning gas disposed on a ceiling in a space to be air-conditioned, and more particularly to a nozzle-type outlet device that efficiently attracts surrounding gas to air. The present invention relates to an outlet device that can blow out air with a conditioning gas.

[0002]

2. Description of the Related Art As a part of an air conditioner, an outlet device for blowing conditioned air supplied through a duct into an indoor space has conventionally been used in various shapes depending on the application. In particular, in the case of a high ceiling indoor space such as a gymnasium, when arranging air outlets on the ceiling, the reach of conditioned air must be increased, and warming from the ceiling to the active area of people near the floor during heating. It is necessary to allow air to reach the nozzle, and a nozzle type most suitable for this is generally used as an outlet device. This conventional nozzle-type outlet device is generally formed of a substantially cylindrical body, connected to a duct, supplied with conditioned air, blows the conditioned air straight through the opening at the tip as it is, and sends the conditioned air to a distant place. is there.

[0003]

A conventional nozzle-type outlet device is constructed as described above and is arranged on the ceiling. In such an indoor space having a high ceiling, the nozzle-type outlet device is provided on the ceiling. Lighting equipment will be provided along with the exit device. Since such lighting equipment generally becomes hot during use and warms the surrounding air, the high temperature air near the ceiling is combined with the warm air blown from the nozzle type outlet device once rising near the ceiling during heating. In such a case, there is a problem that the heat load of the lighting equipment is remarkably increased to prevent a proper lighting operation, and that the life of the lighting equipment is shortened.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the air near the ceiling is attracted by the blown airflow to be sent downward, so that the warm air near the ceiling is prevented from staying in the lighting equipment or the like. It is an object of the present invention to provide an outlet device that can prevent adverse effects and enhance an air conditioning effect at the time of heating by another outlet.

[0005]

An air outlet device according to the present invention is provided at or near a ceiling facing a space to be air-conditioned, and supplied with air-conditioning gas to convert the gas. An outer nozzle of a substantially cylindrical body that blows out to the air conditioning target space, and a substantially cylindrical shape in which the size of the opening at one end is smaller than the opening at the other end and the cross-sectional shape gradually increases from the one end to the other end And a middle nozzle disposed in the opening area of the outer nozzle so that the substantially cylindrical body axial direction matches the cylindrical axis direction of the outer nozzle and one end thereof is disposed toward the air conditioning target space side. It is provided. As described above, in the present invention, the middle nozzle that tapers toward the air-conditioning target space side is arranged in the outer nozzle, and the speed of the airflow blown from the middle nozzle is reduced by the airflow blown from between the outer nozzle and the middle nozzle. Faster, this fast air flow induces a slow air flow around it, and also draws gas near the ceiling outside the outer nozzle and blows it down, so that warm gas does not stay near the ceiling, and lighting equipment etc. In addition to preventing the adverse effects on the air conditioning, the warm air conditioning gas sent in advance by other outlet devices is prevented from rising from below by the downward airflow and can be kept in the active area of the indoor space, and The effect is maximized and air conditioning can be performed efficiently.

In the blow-out device according to the present invention, if necessary, the outer nozzle has one or a plurality of opening holes on a peripheral side surface, and the opening hole faces the space to be air-conditioned. It is located below the ceiling and protrudes downward from the ceiling surface by a predetermined length. Thus, in the present invention, the middle nozzle that is tapered toward the air conditioning target space side is arranged in the outer nozzle having the opening hole on the peripheral side,
The speed of the airflow blown out from the middle nozzle is made faster than the airflow blown out from between the outer nozzle and the middle nozzle, and this faster airflow induces a slower airflow around, and the airflow blown out between the outer nozzle and the middle nozzle. By drawing the gas near the ceiling outside the outer nozzle through the opening hole and blowing it downward, the warm gas near the ceiling can be effectively removed, the stagnation can be eliminated, and the adverse effects on lighting equipment can be reliably prevented. .

In the blow-out device according to the present invention, if necessary, the middle nozzle is disposed such that the position of the one end portion substantially coincides with the opening end surface of the outer nozzle on the air conditioning object space side. Things. As described above, in the present invention, the tip position of the middle nozzle is disposed so as to match the tip position of the outer nozzle, and the balance between the airflow from the middle nozzle and the airflow from between the middle nozzle and the outer nozzle is optimized. Thereby, the attracted state can be optimized, the warm gas near the ceiling can be reliably attracted and removed, and can be diffused downward together with the airflow, thereby significantly reducing adverse effects on ceiling lighting equipment and the like.

In the blow-out device according to the present invention, if necessary, the middle nozzle may be connected to the outer nozzle from a position where one end of the middle nozzle substantially coincides with an opening end face of the outer nozzle on the air conditioning object space side. It is arranged movably in a range up to a position shifted by a predetermined dimension toward the axially upstream side. Thus, in the present invention, the position of the middle nozzle is freely adjustable within a predetermined range, and the position of the middle nozzle is changed to change the position of the middle nozzle and the airflow passing between the middle nozzle and the outer nozzle. By changing the positional relationship of each, the state of attraction of the gas near the ceiling into the outer nozzle can be changed, so that the blowing state from the state of more attraction of the gas near the ceiling to the state of reducing the attraction is reduced. It can be adjusted and switched to a blowing state that emphasizes removal of warm air near the ceiling and diffusion of airflow according to the surrounding situation, and a blowing state that emphasizes the reach of the airflow by suppressing the diffusion of the blowing airflow and more appropriate Air conditioning can be performed efficiently and efficiently.

Further, in the blow-out device according to the present invention, the size of the opening is adjustable by the outer nozzle as required. As described above, in the present invention, the opening of the outer nozzle is arranged so that the opening area can be freely adjusted, and the amount of air drawn through the opening of the air near the ceiling can be adjusted. It can be switched to a blowout state that emphasizes removal of warm gas near the ceiling and diffusion of airflow by increasing the amount of attraction, and a blowout state that emphasizes reach distance by reducing the amount of attraction and suppressing diffusion of blowout airflow,
Efficient air conditioning that is more suitable for surrounding conditions can be performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment of the Present Invention) Hereinafter, an outlet device according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view and a bottom view of the outlet device according to the present embodiment, and FIG. 2 is a longitudinal sectional view of the outlet device according to the present embodiment.

As shown in the drawings, the outlet device 1 according to the present embodiment is formed of a substantially cylindrical body having a plurality of openings 2a on a peripheral side surface, and the openings 2a are used as objects of air conditioning. An outer nozzle 2 disposed below the ceiling 50 facing the indoor space and protruding downward from the ceiling surface by a predetermined length, the opening diameter of one end portion being smaller than that of the other end portion, and Is formed in a substantially cylindrical body having a substantially circular cross-sectional shape whose diameter gradually changes in the middle from the portion to the other end, and the axial direction of the substantially cylindrical body is defined in the opening area of the outer nozzle 2 by the axial direction of the outer nozzle 2. The configuration includes a middle nozzle 3 that is aligned with the cylinder axis direction and one end of which is disposed toward the indoor space.

The outer nozzle 2 is provided with a support 2b for supporting the middle nozzle 3 at a predetermined position on the inner peripheral side, and connected to a duct 51 inside the ceiling 50 to supply conditioned air. Is blown out from the opening end on the indoor space side.
The middle nozzle 3 is formed of a cylindrical body having a cylindrical portion that is integrally continuous with both ends of a substantially conical portion, and the opening end surface position of one end toward the indoor side is set to the indoor space side opening of the outer nozzle 2. The outer nozzle 2 is fixed to the support portion 2b of the outer nozzle 2 so as to be integrated with the outer nozzle 2 in a state substantially coincident with the end face position, and is disposed at the center of the opening area of the outer nozzle 2. Further, since the inner nozzle 3 and the outer nozzle 2 have substantially the same opening end surface position on the indoor space side, the length of the outer nozzle 2 existing in the ceiling 50 can be shortened, and the height of the ceiling inner space can be reduced. Even if the direction size is not large, it can be arranged.

Next, the blow-out operation of the blow-out device having the above-described structure will be described. When the conditioned air enters the outer nozzle 2 from the duct 51, most of the airflow of the conditioned air enters the middle nozzle 3 and flows inside the middle nozzle 3 along a conical portion having a reduced cross-sectional area. While increasing
It is blown out from the indoor space side opening. On the other hand, the airflow flowing between the outer nozzle 2 and the middle nozzle 3 is decelerated by proceeding through an opening area that expands as the diameter of the middle nozzle 3 is reduced. It is blown out from the inner opening. The airflow flowing between the outer nozzle 2 and the middle nozzle 3 induces room air near the ceiling 50 outside the outer nozzle 2 through the opening 2a, and the outer nozzle 2 and the middle nozzle 3 pass through the opening 2a. And is blown out from the indoor side opening together with the airflow.

Further, an airflow having a higher velocity is blown from the tip of the middle nozzle 3 located at the center of the indoor side opening of the outer nozzle 2, so that the airflow is blown out from the opening region between the middle nozzle 3 and the outer nozzle 2. Slow airflow is drawn to the center. The attraction of the airflow from the middle nozzle 3 is large, and the room air outside the outer nozzle 2 is also attracted to the center side together with the airflow inside the outer nozzle 2. Since the airflow of the conditioned air is blown out while being mixed with the air around the induced outlet, the airflow speed is reduced, and the diffusion range of the blown airflow can be increased.

In this way, the warm air in the vicinity of the ceiling 50 can be efficiently diffused into the room, and in the case where heating is performed by another nozzle-type outlet, the warm air once blown out and reaches the lower part of the room rises. Can be suppressed by the downward airflow, so that warm air can be kept in the active area below the room, and the heating effect below the room away from the ceiling 50 can be greatly enhanced.

As described above, in the outlet device according to the present embodiment, the outside diameter of the outer nozzle 2 having the opening 2a on the peripheral side facing the indoor space is gradually reduced as the opening diameter approaches the indoor side opening. A central nozzle 3 is disposed, and the blowing speed of the airflow passing through the middle nozzle 3 is made higher than that of the surrounding airflow. The surrounding airflow is attracted by the high airflow speed at the center, and the opening 2a is opened. The warm air near the ceiling 50 is also attracted and blown down at once through the air, and is diffused into the room. Therefore, the warm air does not stay near the ceiling 50, preventing adverse effects on the lighting equipment and the like, and the nozzle type. In combination with the air outlet, air conditioning performance that cannot be obtained only with the conventional nozzle-type air outlet can be exhibited, and the air conditioning effect in the active area below the indoor space can be significantly enhanced.

(Second Embodiment of the Present Invention) The second embodiment of the present invention
The outlet device according to the embodiment will be described with reference to FIG. FIG. 3 is an explanatory view of the state of adjusting the middle nozzle position of the outlet device according to the present embodiment. As shown in the previous figure, the outlet device 1 according to the present embodiment includes an outer nozzle 2 and a middle nozzle 3 as in the first embodiment. 2 is provided so as to be movable in a predetermined range in the cylinder axis direction, and has a configuration in which the position of the middle nozzle 3 can be adjusted according to the use conditions.

In the air outlet device according to the above-described embodiment, when importance is attached to the ability to attract air near the ceiling, the position of the opening end face of the middle nozzle 3 on the indoor space side is changed to the position of the opening end face of the outer nozzle 2 on the indoor space side. If the state is substantially the same as that of the first embodiment, the indoor air near the ceiling 50 is attracted and sent downward as in the first embodiment. On the other hand, when importance is attached to the reach distance of the airflow, the middle nozzle 3 is shifted by a predetermined dimension toward the duct 51 in the outer nozzle 2 (see FIG. 3), so that the airflow that has exited the middle nozzle 3 in the outer nozzle 2 is reduced. A mixing section with the airflow exiting from the peripheral opening area can be set, and at the opening position of the outer nozzle 2 on the indoor space side, the airflow between the central and peripheral airflows is reduced to reduce the attraction through the opening hole 2a, thereby reducing the reaching distance. Can be extended.

In the outlet device according to each of the first and second embodiments, the opening 2a having a predetermined size is provided.
Through which the air near the ceiling 50 is attracted. In addition, a shield plate for opening and closing the opening 2a is slidably provided, and the size of the open portion of the opening 2a is adjustable. It is also possible to change the amount of air drawn in near the ceiling 50 and the state of blowing air in accordance with various surrounding conditions.

Further, in the outlet device according to each of the first and second embodiments, the outer nozzle 2 and the middle nozzle 3
Is configured as a cylindrical body having a circular cross-sectional shape, but is not limited thereto, and may be configured to be formed into a cylindrical body having another cross-sectional shape such as a square shape or an elliptical shape.
Further, in the outlet device according to each of the first and second embodiments, the outer nozzle 2 is provided with the opening 2a,
0, the outer nozzle 2 and the middle nozzle 3 are arranged so as to protrude from the ceiling surface so that the opening 2a is located on the lower side. However, the present invention is not limited to this, and as shown in FIG. Each of the above embodiments may be configured such that a substantially cylindrical body having no opening hole is suspended from the vicinity of the ceiling 50 and a part of the middle nozzle 3 is provided so as to protrude from the tip of the outer nozzle 2. Similarly, the blowing speed of the airflow passing through the inside of the middle nozzle 3 is made larger than the surrounding airflow, and the airflow around the center and the warm air near the ceiling 50 are attracted by the airflow having a high airflow speed at the center, and the airflow is blown downward at a time. Prevents warm air from staying near the ceiling.

[0021]

As described above, according to the present invention, the middle nozzle which is tapered toward the air conditioning object space side is arranged in the outer nozzle, and the speed of the airflow blown from the middle nozzle is controlled by the outer nozzle and the middle nozzle. Faster than the airflow blown out from between, this fast airflow attracts the slow airflow around, and the gas near the ceiling outside the outer nozzle is attracted and blown down, so that warm gas stays near the ceiling This prevents adverse effects on lighting equipment, etc., and also suppresses the warm air conditioning gas sent in advance by other air outlet devices from rising from below with a downward airflow to reduce the area of activity in the indoor space. The effect of heating can be maximized and air conditioning can be performed efficiently.

Further, according to the present invention, the middle nozzle which tapers toward the air-conditioning target space side is arranged in the outer nozzle having the opening on the peripheral side, and the speed of the airflow blown from the middle nozzle is increased. Faster than the airflow blown out from between the nozzle and the middle nozzle, this fast airflow induces a slow airflow around,
The airflow blown from between the outer nozzle and the middle nozzle draws the gas near the ceiling outside the outer nozzle through the opening, and blows it down to effectively remove warm gas near the ceiling and eliminate stagnation. This has the effect of reliably preventing adverse effects on lighting equipment and the like.

According to the present invention, the tip position of the middle nozzle is arranged so as to coincide with the tip position of the outer nozzle, so that the balance between the airflow from the middle nozzle and the airflow from between the middle nozzle and the outer nozzle is properly adjusted. By optimizing the state of attraction, the warm gas near the ceiling can be reliably removed and diffused downward together with the airflow, which has the effect of significantly reducing adverse effects on ceiling lighting equipment and the like. .

Further, according to the present invention, the middle nozzle is arranged so as to be adjustable in a predetermined range, and the position of the middle nozzle is changed to change the position of the middle nozzle and the airflow passing between the middle nozzle and the outer nozzle. By changing the positional relationship between the opening and the opening hole, the state of attraction of the gas near the ceiling into the outer nozzle can be changed, from the state of more attraction of gas near the ceiling to the state of less attraction. The blowout condition can be adjusted and switched to the blowout condition that emphasizes removal of warm air near the ceiling and diffusion of airflow, or the blowout condition that suppresses diffusion of blown airflow and emphasizes the reach of airflow, depending on the surrounding conditions. This has the effect that air conditioning can be performed more appropriately and efficiently.

According to the present invention, the opening of the outer nozzle is arranged so that the opening area can be adjusted, and the amount of air drawn through the opening near the ceiling can be adjusted. To switch to a blowout state that emphasizes removal of warm gas near the ceiling and diffusion of airflow by increasing the amount of attraction, and a blowout state that emphasizes distance by reducing the amount of attraction to suppress diffusion of blown airflow. Therefore, there is an effect that efficient air conditioning that is more suitable for the surrounding situation can be performed.

[Brief description of the drawings]

FIG. 1 is a front view and a bottom view of an air outlet device according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the outlet device according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a state of adjusting a middle nozzle position of an air outlet device according to a second embodiment of the present invention.

FIG. 4 is a front view of an outlet device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outlet apparatus 2 Outer nozzle 2a Opening hole 2b Support part 3 Middle nozzle 50 Ceiling 51 Duct

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takafumi Wada 5-4-12 Hiroo, Shibuya-ku, Tokyo Inside Environmental Engineering Co., Ltd. (72) Inventor Yoichi Nakajima 968 Koji Fuji, Shima-cho, Itoshima-gun, Fukuoka Air conditioning Giken Kogyo Co., Ltd. Inside the company (72) Inventor Kojiro Fujise Koji Fuji 968, Shima-cho, Itoshima-gun, Fukuoka Prefecture Air-conditioning Giken Kogyo Co., Ltd.

Claims (5)

[Claims] 1. An outside of a substantially cylindrical body provided at or near a ceiling facing a space to be air-conditioned and supplied with air-conditioning gas to blow the gas into the air-conditioning target space. Nozzle, the size of the opening of one end portion is smaller than the opening of the other end portion, the cross-sectional shape is formed of a substantially cylindrical body gradually expanding from the one end portion to the other end portion, the opening area of the outer nozzle An outlet device comprising: a middle nozzle having a substantially cylindrical body axial direction coinciding with a cylindrical axial direction of an outer nozzle and having one end disposed toward the air conditioning target space side. 2. The air outlet device according to claim 1, wherein the outer nozzle has one or more opening holes on a peripheral side surface, and the opening hole faces the space to be air-conditioned. An outlet device, which is located at a lower position and protrudes downward from the ceiling surface by a predetermined length. 3. The blow-off device according to claim 2, wherein the middle nozzle is disposed such that a position of the one end portion substantially coincides with an opening end face of the outer nozzle on the air conditioning target space side. Outlet device. 4. The blow-off device according to claim 2, wherein the middle nozzle has a cylindrical shaft from a position where one end of the middle nozzle substantially coincides with an opening end face of the outer nozzle on the air conditioning target space side with respect to the outer nozzle. An outlet device which is movably disposed in a range up to a position shifted by a predetermined dimension toward an upstream side in a direction. 5. The blow-out device according to claim 2, wherein the size of the opening is adjustable in the outer nozzle.