JP3870706B2 - Air conditioning blower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air-conditioning blowout device provided on an indoor surface such as a ceiling surface, a wall surface, or a floor surface in order to achieve air conditioning in a building indoor space, and more particularly to a technique for preventing condensation that occurs around the air outlet during cooling. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, air conditioning outlets have been provided on indoor surfaces such as ceiling surfaces, wall surfaces, and floor surfaces in order to achieve air conditioning in the indoor space of a building. The air-conditioning outlet is connected to an air-conditioning duct or the like disposed on the back side of the indoor surface and the like, and blows air-conditioned air supplied from an external air-conditioning device through the duct or the like toward the indoor space. In hot seasons such as summer, cooling air with low temperature is blown out from the air-conditioning outlet as air-conditioning air. The air conditioning is designed.
[0003]
[Problems to be solved by the invention]
Conventionally, such air conditioning outlets have the following problems. That is, there is a problem that condensation occurs around the air outlet when cooling is performed in a hot and humid period such as summer. This condensation occurs when the cooling air blown out from the air outlet comes into contact with the area around the air outlet and the surface temperature around the air outlet decreases. The area around the air outlet where the surface temperature is lowered comes into contact with hot and humid air in the indoor space, and moisture contained in the air adheres as water droplets, resulting in condensation. In particular, when the air outlet is formed of a material having high thermal conductivity such as metal, the surface temperature is greatly lowered and the amount of condensation is large. Also, in places where outside air is large, such as the entrance hall of buildings, there were many opportunities to come in contact with high temperature and high humidity outside air, and the occurrence of condensation was significant.
[0004]
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an air-conditioning blowout device that can prevent the occurrence of condensation even at a location where the occurrence of condensation is severe.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, the air-conditioning blowout device according to the present invention is an air-conditioning blowout device provided with a blowout port that is provided on the indoor surface and blows air-conditioned air toward the indoor space,
High-temperature air layer forming means for supplying high-temperature air having a temperature higher than that of the cooling air blown out as the air-conditioned air from the outlet during cooling to the periphery of the outlet and forming a high-temperature air layer around the outlet. A metal frame frame having a blowout port, which is fitted in a hole formed through the indoor surface so as to straddle the front and back of the indoor surface, and the frame body frame A duct that is fed into the air outlet and a heat dissipating fin that is provided integrally with the duct and extends to a space defined on the back side of the indoor surface (Claim 1).
[0006]
In this air-conditioning blow-out device, high-temperature air having a temperature higher than that of the cooling air blown out during cooling is supplied around the blow-out port to form a high-temperature air layer there. Even if it is covered with the layer and cooling air is blown out from the air outlet, the air can be prevented from coming into contact with the surroundings of the air outlet. Thereby, it can suppress that the surface temperature around a blower outlet falls by cooling air, and it can prevent that dew condensation generate | occur | produces around a blower outlet. In addition, the heat radiation fins take away the cold around the air outlet, and the temperature can be brought close to the temperature of the space defined on the back side of the indoor surface, which causes condensation around the air outlet. Can be suppressed.
[0008]
Also, in this air conditioning blow-out device, before the heat radiation fins extend substantially in parallel at a rear surface and spacing of the indoor surface, said high-temperature air layer forming means, before Kida extract, and the heat radiating fins the part between the back side of the indoor surface, comprising a front Kisora the inter and opening communicating, attracted to the indoor space side air in the space through the opening by the ejector effect by the air flow of the cooling air Then, the high-temperature air is supplied around the air outlet (claim 2 ). Because the air in the space defined on the back side of the indoor surface is used as high-temperature air, and this high-temperature air is naturally delivered from the space to the indoor space side using the ejector effect. Active supply means such as a fan is not required separately, and can be realized with a very simple configuration.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an air-conditioning blowout apparatus according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an embodiment of an air-conditioning blowout apparatus according to the present invention.
[0010]
This air-conditioning blower 1 is provided in the ceiling part 6 of the indoor space 4 of a building, The hole part 10 is penetrated and formed in the ceiling material 8 arrange | positioned in this ceiling part 6 as an interior material, This hole part 10 is configured by fitting a frame body frame 12 having a blowout port 2. The frame 12 is made of a metal material, and includes a flange 13 that covers the periphery of the hole 10 and a cylindrical connecting duct 16 that protrudes upward from the inner edge of the flange 13. And a plate-shaped radiating fin 24 in the form of a donut, which is provided in an upper part of the connecting duct 16 so as to extend horizontally outward.
[0011]
The connecting duct 16 connects the air conditioning duct 14 disposed on the back side of the ceiling material 8 and the air outlet 2, and the upper end portion thereof is connected to an air supply port 18 provided on the lower surface of the air conditioning duct 14. . Air-conditioned air that circulates in the air supply space 19 of the air-conditioning duct 14 flows from the air supply port 18 into the connecting duct 16 and is blown out from the outlet 2 toward the indoor space 4 through the connecting duct 16.
[0012]
On the other hand, the radiating fins 24 are integrally provided at the upper end portion of the connection duct 16, take cold heat from the frame body frame 12 cooled by the cooling air flowing through the connection duct 16, and use the cold heat as the ceiling material 8. The temperature of the frame 12 is brought close to the temperature of the air in the ceiling space 22. As a result, the temperature of the frame 12 is increased to prevent condensation around the outlet 2.
[0013]
An opening 20 is provided on the inner wall of the connecting duct 16. The opening 20 is formed in an annular shape along the inner wall of the connection duct so as to surround the flow path of the air-conditioning air flowing through the connection duct 16. The opening 20 is formed in a slit shape so as to penetrate the inner wall of the connecting duct 16 and communicates the inside of the connecting duct 16 and the ceiling back space 22 on the ceiling back side.
[0014]
This opening part 20 is for sending the air of the ceiling back space part 22 around the blower outlet of an air conditioning. That is, when cooling air is supplied from the air conditioning duct 14 through the air supply port into the connecting duct 16 during cooling, the air in the ceiling space 22 is connected through the opening 20 by the ejector effect due to the momentum of the cooling air flow. It is attracted into the duct 16. Since the opening 20 is provided in an annular shape so as to surround the cooling air flow path, the air in the ceiling space 22 is blown out from the outlet 2 so as to wrap the cooling air from the outside, and remains as it is. The air is fed around the air outlet 2 along the surface around the air outlet 2.
[0015]
Since the temperature of the air in the ceiling back space 22 is a normal temperature or a high temperature higher than that of the cooling air, the periphery of the air outlet 2 is covered with the high-temperature air having a temperature higher than that of the air. A high-temperature air layer is formed on the top. Since this high temperature air layer is interposed between the cooling air blown out from the air outlet 2 and the periphery of the air outlet 2, it prevents contact between the cooling air and the area around the air outlet 2. Can be prevented from being reduced by the cooling air, and the occurrence of condensation around the air outlet 2 can be prevented as much as possible.
[0016]
In the present embodiment, the opening 20 is formed in a slit shape on the inner wall of the connection duct 16. However, the present invention is not limited to this, and for example, a large number of holes are formed in the inner wall of the connection duct 16. Any form may be adopted, such as being formed side by side along. In the present embodiment, the air in the ceiling back space 22 is introduced into the indoor space 4 side, that is, the connection duct 16 by using the ejector effect. However, the present invention is not limited to this. For example, an appropriate air blowing means such as a fan may be positively provided to force the air to blow out. Moreover, in the high temperature air of this invention, you may make it produce | generate the air heated not only with the air of the ceiling back space part 22 mentioned above but separately by an air conditioner etc., and it may send it around a blower outlet. . Further, in order to prevent air in the ceiling back chamber 22 from being blown into the connecting duct portion 16 from the opening portion 20 during heating, a closing means such as an appropriate shutter that closes the opening portion 20 to the opening portion 20. It is good to provide.
[0017]
【The invention's effect】
According to the air-conditioning blowout apparatus according to the present invention, high-temperature air having a temperature higher than that of the cooling air blown from the blower outlet during cooling is supplied around the blower outlet to form a high-temperature air layer there. The periphery of the outlet is covered with a high-temperature air layer, and the cooling air blown out from the outlet can be prevented from coming into contact with the outlet. Thereby, it can suppress that the surface temperature around a blower outlet falls by cooling air, and it can prevent that dew condensation generate | occur | produces around a blower outlet . In addition, by providing a heat radiation fin that draws heat from around the outlet and releases it to the space defined on the back side of the indoor surface, the temperature around the outlet is defined on the back side of the indoor surface. It can be brought close to the temperature of the air in the space, and it is possible to prevent the occurrence of condensation by suppressing the temperature drop around the outlet .
[0019]
Further, the heat radiation fins extend substantially in parallel at a rear side and spacing of the indoor surface, before Kida extract, a site between the back side of the heat radiating fins and the interior surface, the back side of the indoor surface An opening communicating with the defined space is provided, and air in the space is drawn from the opening to the indoor space side by the airflow of the cooling air by an ejector effect, and is used as the high-temperature air around the outlet. The air in the space defined on the back side of the indoor surface can be used as high-temperature air, and the air is naturally fed from the space to the indoor space by the ejector effect. Therefore, an active feeding means such as a fan is not particularly required, and can be realized with a very simple configuration (claim 2 ).
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of an air-conditioning blower according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Air-conditioning blower 2 Air outlet 4 Indoor space 6 Ceiling part 8 Ceiling material 10 Hole part 14 Air-conditioning duct 16 Connection duct 18 Air supply port 20 Opening part 22 Ceiling back space part

Claims (2)

An air-conditioning blowout device provided with a blowout port that is provided on an indoor surface and blows air-conditioned air toward an indoor space,
High-temperature air layer forming means for supplying high-temperature air having a temperature higher than that of the cooling air blown out as the air-conditioned air from the air outlet during cooling to form the high-temperature air layer around the air outlet; ,
A metal frame having the air outlet, fitted into the hole formed through the interior surface so as to straddle the front and back of the interior surface, and
The frame body has a duct for sending the cooling air to the air outlet, and a heat dissipating fin provided integrally with the duct and extending to a space defined on the back side of the indoor surface. Air-conditioning blowout device. The radiating fins extend substantially in parallel at a rear surface and spacing of the indoor surface, the hot air layer forming means, before Kida extract, a site between the back side of the heat radiating fins and the interior surface, comprising a front Kisora the inter and opening communicating, around the outlet as the hot air from the opening to attract the indoor space side by a gas stream of the cooling air by ejector effect air in said space The air-conditioning blowout device according to claim 1, wherein the air-conditioning blowout device is supplied.

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