JP2001237580A - Air-conditioning system for cubicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning system which can efficiently cool the inside of the cubicle used for a communication base station, etc., by reducing the influence of a radio device, etc., installed in the cubicle on an air flow in the cubicle. SOLUTION: The air intake 4 of the interior unit 3 of an air-conditioning device is formed nearby an arbitrary wall surface 2 in the cubicle 1, an air outlet 4 is formed in the floor 5 on the side of a wall surface 21 facing the air intake 4, and a ventilation passage 7 for air-conditioning air which connects the air outlet 6 to the interior unit 3 of the air-conditioning device is formed under the floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cubicle air-conditioning system using an air conditioner, and more particularly to a cubicle air-conditioning system capable of efficiently cooling a room of a cubicle used for a communication base station or the like. It is.

[0002]

2. Description of the Related Art Conventionally, a cubicle used for a communication base station or the like performs cooling throughout the year irrespective of summer and winter due to heat generated by a wireless device or the like installed indoors. For this reason, the interior of the cubicle is cooled using, for example, a ceiling-suspended air conditioner.

[0003]

However, in the air conditioning system using the ceiling-suspended type air conditioner, the air flow in the room is easily affected by a radio device or the like installed in the cubicle room. In addition, there is a problem that the temperature distribution in the room becomes uneven, and the room in the cubicle cannot be efficiently cooled.

Further, in the conventional air conditioning system, an air conditioner employing an ON-OFF control method of a compressor by a thermostat is used as an operation control method of the air conditioner, which is inevitable even in winter. In addition, the operation of the compressor is required, and from this point, there is a problem that it is difficult to achieve energy saving.

The present invention has been made in view of the above-mentioned problems of the conventional cubicle air-conditioning system, and makes it difficult for an air flow in a cubicle room to be affected by a radio device or the like installed in the cubicle room, thereby providing a communication base station. It is an object of the present invention to provide a cubicle air-conditioning system that can efficiently cool a room of a cubicle used for a vehicle.

[0006]

In order to achieve the above object, an air conditioning system for a cubicle according to the present invention forms an air inlet of an air conditioner near an arbitrary wall surface in a room of a cubicle, and forms the air inlet of the air conditioner. An air outlet is formed on the floor on the wall surface facing the air conditioner, and a ventilation path for conditioned air connecting the air conditioner and the air outlet is formed below the floor.

In this cubicle air conditioning system, high-temperature air that has been heated by a heat source such as a wireless device installed in the room of the cubicle and accumulated in an upper space in the room is removed.
After sucking into the air conditioner from the air inlet and cooling the sucked air by heat exchange, the air is blown out from the air outlet formed on the floor on the wall side facing the air inlet through the ventilation path formed under the floor At the same time, the cool air is further heated by a heat source such as a wireless device to generate a circulating airflow by using an ascending airflow, thereby generating a circulating airflow. It is possible to eliminate the influence and prevent the temperature distribution in the room from becoming uneven.

In this case, the air inlet is positioned at a height from the upper part to the middle part in the room of the cubicle by extending a suction duct having an air inlet at the tip from the air conditioner. Can be.

Thus, the high-temperature air accumulated in the upper space in the room can be reliably sucked into the air conditioner from the air suction port.

In addition, an air outlet can be provided at a position near the door of the cubicle so that an air curtain is formed by the blown air.

Thus, when the door of the cubicle is opened and closed, it is possible to suppress the outside air having a high temperature and humidity from entering the room of the cubicle, to maintain a high cooling efficiency and to install the cubicle in the room. It is possible to prevent a device such as a wireless device from being broken down by moisture.

[0012] The air conditioner may be an air conditioner combined with natural refrigerant circulation.

Thus, when the temperature of the outside air is lower than the indoor temperature of the cubicle in winter or the like, only the blower is operated without operating the compressor of the air conditioner, and the refrigerant using the low temperature outside air is used. Can be naturally circulated, thereby reducing the power consumption and energy saving. And, in the cubicle air conditioning system of the present invention, in particular, since high-temperature air accumulated in the upper space in the room is directly sucked into the air conditioner from the air suction port, heat exchange efficiency is good, A large cooling capacity can be obtained by the natural circulation operation of the refrigerant.

Further, a storage space for storing accessory equipment such as a battery can be provided in the ventilation path.

This makes it possible to reliably cool auxiliary equipment such as a battery and to reduce the size of the cubicle, thereby reducing the construction cost of the cubicle and the energy cost required for cooling.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cubicle air conditioning system according to the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment in which the cubicle air conditioning system of the present invention is applied to a cubicle used for a communication base station.

As shown in FIG. 2, the cubicle 1 includes an accessory 13 such as a wireless device 10 and a battery required for a communication base station, and is provided near an arbitrary wall surface 2 of the air conditioner. The air inlet 4 of the air conditioner 3 is formed, and the air outlet 6 is formed in the floor 5 on the side of the wall surface 21 opposite to the air inlet 4.
A ventilation path 7 for conditioned air connecting the air outlet 6 and the air outlet 6 is formed under the floor.

In this case, the air suction port 4 ensures that the high-temperature air accumulated in the upper space inside the room of the cubicle 1 can be reliably sucked from the air suction port 4 into the indoor unit 3 of the air conditioner. By extending a suction duct 9 having an air suction port 4 formed at the end to the full width of the indoor unit 3 from the indoor unit 3, the air suction port 4 is extended from the upper portion to the middle portion of the room of the cubicle 1. Height, preferably located at the top.

The ventilation path 7 is formed by using substantially the entire lower part of the panel constituting the floor 5, and the air outlet 6 is formed so as to be substantially full in the width direction of the room of the cubicle 1. .

As a result, the ventilation passage 7 can be used as a storage space for accommodating the accessory equipment 13 such as a battery, and the cooling of the accessory equipment 13 such as a battery can be reliably performed. As a result, the construction cost of the cubicle 1 and the energy cost required for cooling can be reduced.

Further, by providing the door 14 of the cubicle 1 near the air outlet 6 formed almost completely in the width direction in the room of the cubicle 1, when the door 14 is opened and closed, the outside air having a high temperature and humidity can be removed. Can be suppressed from entering the room of the cubicle 1, and the device such as the wireless device 10 installed in the room of the cubicle 1 can be prevented from being damaged by moisture.

On the other hand, in the air conditioner, although not particularly limited, the outdoor unit 8 is installed at a position higher than the indoor unit 3 and the difference in specific gravity of the refrigerant is used.
Between the air conditioner and the outdoor unit 8 through two refrigerant pipes P composed of a liquid refrigerant and a gas refrigerant. I have. As a result, when the outside air temperature is low, such as in winter,
The air conditioner can operate in a cooling mode by operating only the blower without using the compressor of the air conditioner and using the low-temperature outside air to naturally circulate the refrigerant, thereby reducing power consumption and conserving energy. In particular, since the high-temperature air accumulated in the upper space in the room is directly sucked into the indoor unit 3 of the air conditioner from the air suction port 4, the heat exchange efficiency is good and the refrigerant naturally circulates. By operation, a large cooling capacity can be obtained.

In this embodiment, the suction duct 9
Is extended from the indoor unit 3 so that the installation position of the indoor unit 3 can be lowered.

According to the air conditioning system for the cubicle 1, as shown in FIG. 1, high-temperature air that is heated by a heat source such as a wireless device 10 installed in the room of the cubicle 1 and accumulated in an upper space in the room. After being sucked into the indoor unit 3 of the air conditioner from the air suction port 4 through the suction duct 9 and cooling the sucked air by heat exchange,
Air is blown from an air outlet 6 formed in the floor 5 on the wall surface 21 side facing the air inlet 4 through a ventilation path 7 formed under the floor, and the cold air 11 is further discharged by the wireless device 1.
Utilizing an ascending airflow generated by heating by a heat source such as 0, a circulating airflow 12 toward the air suction port 4 is generated,
It is possible to eliminate the influence of the wireless device 10 and the like installed in the room of the cubicle 1 on the airflow in the room, thereby preventing the temperature distribution in the room from becoming uneven.

In this case, the cool air 11 blown out from the air outlet 6 effectively uses the ascending airflow generated by being heated by the heat source such as the wireless device 10 and the high air conditioner of the air conditioner combined with natural refrigerant circulation. It is desirable to set the flow velocity to 1 to 2 m / s so that the heat exchange efficiency can be ensured, thereby reducing the power consumption of the blower and the heat source such as the room inside the cubicle 1 and the radio 10. Can be efficiently and uniformly cooled.

Although the cubicle air-conditioning system according to the present invention has been described based on the embodiment applied to the cubicle used for the communication base station, the present invention is not limited to the configuration described in the above embodiment. For example, adopting an air conditioner of a type other than the refrigerant natural circulation combined type,
The configuration can be appropriately changed without departing from the spirit of the invention.

[0028]

According to the cubicle air-conditioning system of the present invention, high-temperature air that has been heated by a heat source such as a wireless device installed in the cubicle room and accumulated in the upper space of the room can be discharged from the air suction port. After being sucked into the air conditioner and cooling the sucked air by heat exchange, the air is blown out from an air outlet formed on the floor on the wall side facing the air inlet through a ventilation path formed under the floor. The cool air is further heated by a heat source such as a wireless device to generate a circulating airflow by using the ascending airflow, thereby eliminating the influence of the wireless device and the like installed in the cubicle room on the indoor airflow, It is possible to prevent the temperature distribution in the room from becoming uneven. Thereby, the room of the cubicle can be efficiently and uniformly cooled.

Also, by extending a suction duct having an air suction port at the tip from the air conditioner, the air suction port is positioned at a height from the upper part to the middle part of the inside of the room of the cubicle. The high-temperature air accumulated in the upper space in the room can be reliably sucked into the air conditioner from the air suction port.

Further, by installing an air outlet at a position near the door of the cubicle and forming an air curtain with the blown air, when the door of the cubicle is opened and closed, the outside air having a high temperature and humidity can prevent the cubicle from opening. It is possible to suppress intrusion into the room, maintain high cooling efficiency, and prevent a device such as a wireless device installed in the room of the cubicle from being damaged by moisture beforehand.

In addition, by using an air conditioner combined with natural refrigerant for the air conditioner, the compressor of the air conditioner can be operated when the temperature of the outside air is lower than the indoor temperature of the cubicle in winter or the like. In addition, a cooling operation in which only the blower is operated and the refrigerant is naturally circulated by using outside air having a low temperature becomes possible, so that power consumption is reduced and energy saving can be achieved. And, in the cubicle air conditioning system of the present invention, in particular, since high-temperature air accumulated in the upper space in the room is directly sucked into the air conditioner from the air suction port, heat exchange efficiency is good, A large cooling capacity can be obtained by the natural circulation operation of the refrigerant.

Further, by providing a storage space for accommodating accessory equipment such as a battery in the ventilation path, cooling of the accessory equipment such as a battery can be reliably performed, and the cubicle can be miniaturized and the construction cost of the cubicle can be reduced. And the energy cost required for cooling can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment in which a cubicle air conditioning system of the present invention is applied to a cubicle used in a communication base station, and is an explanatory diagram illustrating airflow in a room of the cubicle provided with the air conditioning system.

2A and 2B show the same cubicle, wherein FIG.
(B) is a side sectional view, and (c) is a plan sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cubicle 2 Wall surface 21 Wall surface 3 Indoor unit 4 Air suction port 5 Floor 6 Air outlet 7 Ventilation path 8 Outdoor unit 9 Suction duct 10 Wireless device 11 Cold air 12 Circulating air flow 13 Accessories such as batteries 14 Door P refrigerant pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teruo Kimura 1-23-2 Kandasudacho, Chiyoda-ku, Tokyo Inside the Hitachi Air Conditioning System Co., Ltd. 2 Hitachi Air Conditioning Systems Co., Ltd. (72) Inventor Akihiro Suzuki 6th Rokubancho, Chiyoda-ku, Tokyo Japan Mobile Communications Co., Ltd. F-term (reference) 5E322 BA03 BA05 BB08 EA11 5G016 CG04

Claims (5)

[Claims] 1. An air conditioner having an air inlet formed near an arbitrary wall surface in a room of a cubicle, and an air outlet formed on a floor on a wall surface opposite to the air inlet. An air-conditioning system for cubicles, wherein a ventilation path for air-conditioning air connecting an air outlet is formed under the floor. 2. An air duct having an air suction port formed at an end thereof is extended from an air conditioner so that the air suction port is positioned at a height from an upper portion to an intermediate portion of a room of the cubicle. The cubicle air-conditioning system according to claim 1, wherein: 3. A cubicle air-conditioning system according to claim 1, wherein an air outlet is provided near the cubicle door, and an air curtain is formed by the blown air. . 4. The cubicle air-conditioning system according to claim 1, wherein the air-conditioning apparatus is an air-conditioning apparatus with a natural refrigerant circulation. 5. The cubicle air-conditioning system according to claim 1, wherein a storage space for storing accessory equipment such as a battery is provided in the ventilation path.