JPH0259374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an air curtain device provided at an entrance/exit of a building.

[Conventional technology and its problems]

A conventional air curtain device will be explained based on FIGS. 3 and 4. Conventionally, this type of device has either provided an airflow outlet 1 above the entrance of a building to generate a downward airflow 2, as shown in Figure 3, or provided airflow to the left and right of the entrance as shown in Figure 4. In most cases, equipment is provided with a flow outlet 1 and a suction port to generate a lateral air flow 2. However, in either case, there was a problem in that the air curtain was destroyed by wind from outside. A possible countermeasure to this problem is to increase the amount of air from the outlet, but there is a limit to the speed of the air being blown out, and the air curtain needs to be operated at all times, regardless of whether people are coming in or out. When increasing the amount of air from the outlet, there was a drawback that running costs were high.

[Purpose of the invention]

The present invention solves the above problems by controlling the number of layers of the air curtain according to the strength of the wind from outside, and also changes the temperature of each layer of the air curtain depending on the temperature difference between indoors and outdoors. It is an object of the present invention to provide an air curtain device that can more effectively insulate a room from outside air.

[Structure of the invention]

The present invention provides a multi-layered air curtain for entrances and exits of buildings, which has a multi-stage blowout nozzle and a multi-stage suction port corresponding to the blowout nozzle, so that an air curtain of several layers can be formed. This multilayer air curtain device is characterized in that the number of layers of the air curtain can be changed depending on the strength of the wind.

Next, the present invention will be explained in detail based on the drawings.

In FIG. 1, reference numerals 11, 12, 13, and 14 indicate air curtain outlets provided above the entrance and exit, and 15, 16, 17, and 18 indicate air curtain intake ports corresponding to the respective air curtain outlets;
9 is an anemometer, 20 indicates the direction of the wind from outside,
Further, 21, 22, 23, and 24 are motors for supplying air to the respective air curtain outlets;
5, 26, 27, 28 are dampers 30, 31, 32 provided at the bottom of each air curtain suction port.
and 33, and 2
9 indicates a duct for discharging the air sucked in from the air curtain suction port to the ventilation equipment.

The device shown in Fig. 1 has four air curtain outlets and four corresponding air curtain suction ports, and the corresponding air curtain outlets and suction ports are operated. The air curtain is constructed so that an air curtain can be formed from the first layer to the fourth layer, and the air curtain can be formed independently for each layer. is measured by an anemometer 19, and when the wind speed is low, only the motor 21 is operated and only the damper 30 is opened by the motor 25, forming an air curtain of only the first layer. Second
The air curtain is configured to sequentially form a layer, a third layer, and a fourth layer of air curtains.

That is, for example, when the wind speed is 1 m/s or less, only the first layer is used, and when the wind speed is 1 to 3 m/s, the first layer and the second layer are used.
When the speed is 3 to 5 m/sec, the air curtain is formed in the first layer, the second layer, and the third layer, and when the speed is 5 m/sec or more, the air curtain is formed in all four layers.

By doing so, an appropriate number of air curtains can be formed to block wind from outside without requiring more power than necessary.

Furthermore, by using the device of the present invention, the temperature inside the room can be controlled more effectively.
That is, for example, when heating the indoor side, the temperature of the airflow (fourth layer) on the indoor side is set to be the same as the room temperature, and the temperature on the outdoor side is set to be equal to the outside air temperature.
By setting the layers between the two (the third layer and the second layer) to an intermediate temperature, indoor air can be effectively insulated from outside air.

In this case, if there is no air blowing in from outside, only the first and fourth layers can be operated, and a heat insulating layer can be used between them, and as the wind gets stronger, the middle layer air curtain can be used. The number of layers may be increased.

Next, an application example of the present invention will be explained based on FIG. 2.

In FIG. 2, only necessary parts are shown for explanation, and symbols 11, 12, 13 and 14 are air curtain outlets, 15, 16, 17 and 1.
Reference numeral 8 indicates an air curtain inlet corresponding to each air curtain outlet.

The example shown in FIG. 2 is an example in which the present invention is applied to a stairway entrance to a building, and air curtain outlets 11, 12, 13 and 1
4 are provided in a stair-like manner, and air curtain suction ports 15, 1 are provided at the rising part of the stairs corresponding to each air outlet.
6, 17, and 18, each layer of the air curtain may be controlled in the same manner as described in connection with FIG.

〔Effect of the invention〕

The present invention is structured so that the air curtain is divided into several layers and the number of layers of the air curtain is changed according to the strength of the external wind, so the external wind can be effectively controlled without requiring more power than necessary. By blocking the air and controlling the temperature for each layer, it becomes possible to effectively adjust the indoor temperature.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram for explaining the air curtain device of the present invention, Fig. 2 is a schematic diagram for explaining an application example of the present invention, and Figs. 3 and 4 are schematic diagrams for explaining a conventional example. It is a schematic diagram. 11, 12, 13, 14... Air curtain outlet, 15, 16, 17, 18... Air curtain inlet.

Claims (1)

[Claims] 1. A multi-layered air curtain for entrances and exits of buildings, in which the air outlets are multi-staged 11, 12, 13, 14,
In addition, by providing multi-stage suction ports 15, 16, 17, and 18 corresponding to the blow-off ports 11, 12, 13, and 14, it is configured to form several layers of air curtains, and also to reduce the strength of wind from outside. A multilayer air curtain device characterized in that it is configured such that the number of layers of the air curtain can be changed accordingly. 2. The multilayer air curtain device according to claim 1, which is configured to change the temperature of each layer of the air curtain depending on the difference in temperature between indoors and outdoors.