JPH0741345U - High diffusion type outlet - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a pan-type high diffusion type outlet with a low pressure loss and high diffusion performance, in which the neck wind speed does not decrease even in the case of small air volume blowing. [Structure] A neck portion 1 and an outer blowing face 4 that is continuously provided under the neck portion 1 and has an opening 3 that opens to the inside of the room, and is installed in the center of the opening 3 of the outer blowing face 4. A plurality of swirl vanes 2 for giving a swirl flow to the blown air are installed in the neck portion 1 at the air outlet that is formed on the indoor ceiling and blows the conditioned air into the room. The pan 5 is formed as a convex cone-shaped blow-out pan 5 with a predetermined gap 10 provided between the pan 5 and the lower surface of the cone-shaped blow-out pan 5, and a ring-shaped attracting member having an opening 8 in the central portion. A high diffusion type air outlet provided with an air outlet face 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is used for an air conditioning equipment in a building such as a building, and is related to a high diffusion type air outlet installed on the ceiling of the room and blowing out the conditioned air blown through a duct into the room. It is a thing.

[0002]

[Prior art]

 As an outlet with a ceiling that is installed on the ceiling of the room and blows out conditioned air such as cold air that is blown through ducts into the room, the conventional air outlets are the Amonestat type outlets and pans. Breeze line type air outlets, which are die air outlets and linear air outlets, are generally used. In addition, in recent years, a lot of system ceilings have been adopted in office buildings, and along with this, from the point of view of design, air outlets are also more often adopted, such as square amonestat type outlets and pan type outlets. ing.

As shown in FIG. 5, the amonestat-type outlet is connected to the lower portion of the neck portion 20, and the outlet cone 22 is multiplexed in the opening of the outer outlet face 21 having an opening that opens into the room. The air-conditioned air is blown out from between the blow-out cones 22 while being diffused into the room. Further, as shown in FIG. 6, the pan-type outlet is connected to the lower portion of the neck portion 20, and the outer blow-out face 21 having an opening to the inside of the room is provided with a steel plate (blowout) at the center of the lower portion of the opening. It is configured by suspending a pan 23, and acts so as to diffuse the conditioned air into the room from between the outlet pan 23 and the ceiling. The amonestat type outlet has a high ceiling height because of its high indoor air attraction performance. In the case of 7 m, the upper limit of the temperature difference between the blown air and the room air is about 14 to 15 deg., While the pan-type outlet has a significantly smaller indoor air attracting performance than the amonestat-type outlet, The upper limit of the temperature difference between the blown air and the room air is about 6 deg.

On the other hand, in recent years, an ice storage type cooling system is becoming popular mainly for the purpose of cutting off peak power in summer and using inexpensive midnight power. This is a system that converts the water in the heat storage tank into ice by using inexpensive midnight power at midnight, and uses the low-temperature cold water obtained from this ice for cooling during the daytime. Blower air can be reduced by increasing the temperature difference from the secondary side air, and it is possible to further reduce costs and save energy.

[0005]

[Problems to be solved by the device]

 However, when low-temperature cold air is blown out at a small air volume in the above-mentioned conventional air outlet, there is concern that the diffusion performance may deteriorate and the cold draft may be generated. Both the amonestat-type outlet and the pan-type outlet have relatively high diffusion performance, but it is necessary to secure a certain neck wind speed, and if the neck wind speed decreases due to small airflow, diffusion performance Has a problem of decreasing. In particular, the pan-type outlet has the characteristic that the noise level is lower than that of the amonestat-type outlet, but the diffusion performance is significantly deteriorated. In addition, it is possible to secure the neck wind speed and prevent the deterioration of diffusion performance by selecting a small number from the above-mentioned conventional air outlets, even in the case of a small air volume, but in this case, however, Causes another problem that the pressure loss at the outlet increases.

The present invention has been made to solve the above-mentioned problems, and it is a pan-type high diffusion type that has a low pressure loss and a high diffusion performance, in which the neck wind speed does not decrease even when a small air volume is blown. The purpose is to obtain an outlet.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a highly diffused air outlet according to the present invention is provided with a neck portion, an outer outlet face that is connected to a lower portion of the neck portion, and has an opening portion that opens into the room, and an outer outlet portion. It consists of an air outlet pan installed in the center of the opening of the air outlet face, and is installed on the indoor ceiling to blow out conditioned air into the room. In addition to installing the swirl vane of the above, the above-mentioned blow-out pan is formed as a convex cone-shaped blow-out pan, and a predetermined gap is provided around it to the lower surface of the cone-shaped blow-out pan, and an opening is made in the center. It is characterized in that it has a ring-shaped induction blow-out face.

Further, the high diffusion type air outlet according to the present invention is characterized in that the outer air outlet face, the cone-shaped air outlet pan, and the attracting air outlet face are formed in a square shape or a round shape.

[0009]

[Action]

 Since the highly diffused air outlet according to the present invention is configured as described above, the swirl vanes installed at the neck portion provide a swirl flow to the blown air even when a small air volume is blown out, so that the neck The wind speed can be secured, and thus the deterioration of the diffusion performance can be prevented. Also, the blast air given the swirling flow is blown out along the conical surface of the cone-shaped blowing pan, but at this time, the lower surface of the cone-shaped blowing pan is in a vacuum state, and the conical-shaped blowing pan and the attracting blowing face are separated. The indoor air is attracted from the gap between them, and the low-temperature blast air and the attracted indoor air are mixed and blown out into the room. For this reason, even if low-temperature cold air having a large temperature difference from the room air is blown out, the generation of drafts can be reduced.

In addition, since the outer outlet face, the cone-shaped outlet pan, and the attracting outlet face are formed in a square shape, the outlets that have been designed in conformity with the system ceiling often used in office buildings these days are also designed. Can be

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical sectional view of a high diffusion type air outlet according to an embodiment of the present invention, FIG. 2 is a bottom view thereof, FIG. 3 is a slow constant characteristic diagram, and FIG. 4 is a pressure loss characteristic diagram. A plurality of swirl vanes 2 that give swirl flow to the blown air are installed in the neck portion 1 of the air outlet. An outer blowing face 4 having a square-shaped opening 3 that is open to the inside of the room is connected to a lower portion of the neck portion 1.

At the center of the lower part of the opening 3 of the outer blowing face 4, a cone-shaped blowing pan 5 made of a square pyramid having a square bottom and a convex shape is attached to the lower part of the neck portion 1 via a stay 6. It is hung on the supported bracket 7. Around the four sides of the cone-shaped blow pan 5, a square ring-shaped attracting blow-out face 9 having an opening 8 in the center is installed with a predetermined gap 10 between the lower surface of the cone-shaped blow pan 5. ing.

[0013] Accordingly, according to the above configuration, since the swirl flow can be imparted to the blown air by the swirl vanes 2 installed in the neck portion 1 of the air outlet, the neck wind speed is reduced even when a small amount of air is blown out. Can be suppressed and a predetermined neck wind speed can be secured. Therefore, it is possible to prevent the deterioration of the diffusion performance due to the small amount of air flow.

Further, since the blown air is blown out along the conical surface of the cone-shaped blow pan 5 made of a quadrangular pyramid, the lower surface of the cone-shaped blow pan 5 is in a vacuum state, so that the cone-shaped blow pan 5 has The indoor air is attracted from the gap 10 between the lower surface and the induced blowout faces 9 installed on the four sides, and the attracted indoor air and low-temperature blown air are mixed and blown out into the room. become. As a result, even if low-temperature air having a large temperature difference from the room air is blown out, the cold draft can be reduced by the synergistic effect with the high diffusion performance. In the above example, the outer blow-out face, the cone-shaped blow-out pan, and the attracting blow-out face are formed in a square shape, but the present invention is not limited to this shape. For example, a round shape has the following effects. It is effective.

FIG. 3 shows the result of an experimental determination of the slow constant (k) at the time of isothermal blowing in order to compare the diffusion performance with that of a conventional type outlet, in the case where the blowing air volume is 250 m ³ / h, In the conventional square anemostat type outlet for the system ceiling, k = 1.17 as indicated by the straight line b, whereas in the high diffusion type outlet according to the present invention, k = 1.17. = 2.1, which means that the diffusion radius is significantly increased.

Further, FIG. 4 shows the measurement results of the pressure loss (sp) at the air outlet at the same air flow rate, and in the above conventional air outlet, sp = 2.3 mmA q as shown by the straight line b. In contrast, the high diffusion type air outlet according to the present invention has sp = 1.5 mmAq (with an air volume adjustment damper), as shown by the straight line a, which has a large pressure loss. It can be seen from FIGS. 3 and 4 that the air outlets with reduced pressure loss, low pressure loss and high diffusion performance are realized.

[0017]

[Effect of device]

 As described above, according to the high diffusion type air outlet of the present invention, the neck wind speed is secured and the high diffusion performance is maintained even if the low temperature cold air having a large temperature difference from the room air is blown out with a small air volume. At the same time, the indoor air can be attracted and mixed with low-temperature cold air to be blown out into the room, so that cold draft at the time of low-temperature cold air blow-out can be reduced. In addition, since it is a pan-type outlet, it retains its characteristic low noise performance, but it is not necessary to select a small count to increase the neck wind speed, and pressure loss at the outlet is minimized. Can be suppressed to Therefore, even when low-temperature cold air is blown out with a small air volume, it is possible to obtain a pan-type high-diffusion outlet with low pressure loss and high diffusion performance, in which the neck wind speed does not decrease.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a high diffusion type air outlet according to an embodiment of the present invention.

FIG. 2 shows a high diffusion type air outlet according to an embodiment of the present invention,
It is a bottom equivalent figure of FIG.

FIG. 3 is a characteristic diagram of a slow constant of a high diffusion type air outlet according to an embodiment of the present invention.

FIG. 4 is a pressure loss characteristic diagram of the high diffusion type air outlet according to the embodiment of the present invention.

FIG. 5 is a schematic vertical cross-sectional view showing the structure of a conventional anemostat-type outlet.

FIG. 6 is a schematic vertical cross-sectional view showing the configuration of a conventional pan-type outlet.

[Explanation of symbols]

1 Neck Part 2 Swirling Blade 3 Opening 4 Outer Blow Face 5 Cone-shaped Blow Pan 6 Stay 7 Support Bracket 8 Open 9 Induction Blow Face 10 Gap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masaki Shiotani, 19-1 Tobita, 2-1-1, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Norita Sagara 2-1-1, Tobita, Chofu, Tokyo No. Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Yuji Tsubota 2-4-1, Nishitsutsujigaoka, Chofu City, Tokyo Tokyo Electric Power Co., Inc. Technical Research Institute (72) Creator Takaka Nishi Nishitsujiga, Chofu City, Tokyo 2-4-1, Oka Technical Research Institute, Tokyo Electric Power Company (72) Creator Satoshi Takakusa 2-4-1, Nishitsutsujigaoka, Chofu-shi, Tokyo Tokyo Electric Power Co., Ltd. Technical Research Institute (72) Inventor, Kiyoshi Kakura 3-13-11 Edogawa, Edogawa-ku, Tokyo (72) Creator: Yoshizo Arakawa 2-13-8-510 Ogawa-Higashimachi, Kodaira-shi, Tokyo

Claims (2)

[Scope of utility model registration request] 1. A neck portion, an outer blowing face that is connected to a lower portion of the neck portion and has an opening that opens to the inside of the room, and a blowing pan that is placed in the center of the opening of the outer blowing face. At the air outlet that is installed on the indoor ceiling and blows the conditioned air into the room, a plurality of swirl blades that give a swirl flow to the blown air are installed in the neck portion, and the air blow pan is convex upward. A cone-shaped blow-out pan is provided, and a ring-shaped attracting blow-out face having an opening in the central portion is provided around the periphery of the cone-shaped blow-out pan with a predetermined gap between the cone-shaped blow-out pan and the lower surface of the same cone-shaped blow-out pan. High diffusion type outlet. 2. The high diffusion type blow-out port according to claim 1, wherein the outer blow-out face, the cone-shaped blow-out pan, and the attracting blow-out face are formed in a rectangular shape or a round shape.