JPH01212853A - Air curtain device for spot space - Google Patents

Abstract

PURPOSE:To prevent conditioned air in a spot space from releasing to the outside of the space, by a method wherein the blow-off port of an air curtain is formed so as to be double and air for a space except the spot space is blown off through an outside blow-off port while air for the inside of the spot space is blown off through the inside blow-off port. CONSTITUTION:An air curtain blow-off port 16, consisting of an inside blow-off port 6 and an outside blow-off port 8, is provided with a flow regulator 14, made by aluminum honey comb and the like and regulating the flow of air so as to obtain vertical flow, at the tip end thereof, whereby the flow of blow- off air is regulated so as to obtain vertical laminar flow. Further, a resistance body 15 consisting of superposed several sheets of net plates, made by metal or plastic sheet having different width or length, is provided below the flow regulator 14 while air for air curtain is blown out through the resistance body 15. When the blow-off port 3 and the suction port 4 of an air conditioner 2 are provided in the air curtain, conditioned air will never be released to the outside, therefore, the conditioned air prevails to every corners in the air curtain. The conditioned air is retrieved through the suction port 4 of the air conditioner, therefore, the efficiency of the air conditioning may be improved remarkably.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spot space air curtain device used in a large workplace, etc., for efficiently supplying conditioned air to a specific area or a specific worker. It is something.

[Prior Art] Fig. 3 is a conceptual side view showing a conventional spot space air conditioner. In Fig. 0, 2 is an air conditioner, 3 is an air conditioner outlet, 11 is a floor, and 12 is a worker be.

Conventionally, as shown in FIG. 3, an air conditioner 2 for a spot space has been installed at a required location to blow conditioned air directly onto a worker 12 or the like.

[Problems to be Solved by the Invention] The above-mentioned conventional air conditioner 2 for spot spaces blows out harmonized air in a wide space toward a specific location, so it is diffused over a wide space, and the air sucked in is almost unharmonized. It uses air, is extremely inefficient, requires large equipment, and consumes a large amount of power. Moreover, it is extremely ineffective when the work involves moving around, and the conditioned air is blown only from one side of the worker 12 who is standing in a fixed position, causing problems such as causing the worker to become unwell.

This invention has been made to solve these problems, and provides an air curtain device for spot spaces that can improve air conditioning efficiency, consume less power, and provide a comfortable environment for workers. With the goal.

[Means for Solving the Problems] An air curtain device for a spot space according to the present invention is provided with an air curtain outlet so as to form an air curtain around the spot space, and the air curtain outlet is doubled. The outer outlet blows out air sucked in from outside the spot space, and the inner outlet blows out air sucked in from inside the spot space.

[Function] In the spot space air curtain device of the present invention, an air curtain is formed around the spot space, the air curtain outlet is doubled, and air outside the spot space is blown out from the outer outlet. Since the air in the spot space is blown out from the inner outlet, almost no air in the spot space escapes to the outside, thus minimizing the amount of conditioned air that is wasted outside. be able to.

[Example] Fig. 1 is a sectional view showing an air curtain device for a spot space which is an embodiment of the present invention, and Fig. 2 is a sectional view of an air curtain outlet of the air curtain device for a spot space shown in Fig. 1 above. It is an enlarged sectional view and a figure showing a blowing flow velocity.

In the figure, 1 is an air curtain device for spot space, 2 is
is an air conditioner, 3 is an air conditioner outlet, 4 is an air conditioner inlet, 5 to 9 are spot space air curtain devices 1
In each part, 5 is an inside fan installed approximately in the center of the inside of the ceiling of the spot space air curtain device (hereinafter referred to as air curtain device) 1, and 7 is installed approximately in the center of the outside of the ceiling of the air curtain device 1. External fan provided, 16
1 is an air curtain outlet consisting of an inner outlet 6 and an outer outlet 8; 9 is a supporting member such as a chain or support; 10 is a dividing wall; 11 is a floor; 12 is a worker; and 13 is a filter or other equipment as required. 14 is a rectifier, and 15 is a resistor.

The spot space air curtain device 1 is installed so as to cover the specific space using a support member 9, and the air curtain outlet 16 is formed into a circular or polygonal shape as required above the specific space. It is provided at the periphery of the air curtain device 1 so as to blow out air vertically toward the floor 11 to form an air curtain.

By the way, since the air flow blown out from the air curtain outlet 16 is normally in a turbulent state, it is impossible to completely prevent the air on both sides of the air flow from being exchanged. Air cannot be completely confined by an air curtain, so
It is difficult to increase the difference between the air temperature inside the air curtain and the air temperature outside.

Therefore, in this invention, a multi-layer air curtain with a vertical laminar flow and a velocity gradient was used to minimize the entrainment of air on both sides.

That is, as shown in FIG. 2, a rectifier 14 for vertical rectification made of aluminum honeycomb or the like is provided at the tip of the air curtain outlet 16 to make the air flow blown out a vertical laminar flow. A resistor 15 formed by stacking several mesh plates of metal or plastic having different widths or lengths is provided at the bottom, and air for the air curtain is blown out through the resistor 15. In addition, resistor 1
5 may be provided above the rectifier 14.

As a result, as shown by the arrow at the bottom of Figure 2, the blowing airflow has a high wind speed at the center and a minimum at the outermost part.
The exchange of air inside and outside the air curtain has become extremely rare.

As a result of the experiment, compared to the case without the rectifier 1.4 and the resistor 15, the heat shielding effect was more than three times greater with the same blower output.

Since the spot space air curtain device 1 of the present invention is constructed as described above, air flows as shown by the arrows in FIG. 1, and the air below this spot space air curtain device 1 is She is wrapped in curtains and is almost unable to escape outside. Therefore, if the air conditioner outlet 3 and air conditioner suction port 4 of the air conditioning bag W2 are provided inside the air curtain, the conditioned air will not wastefully escape outside, so the conditioned air will not flow inside the air curtain. Since the conditioned air reaches every corner and is recovered from the air conditioner suction port 4, the efficiency of air conditioning is also significantly improved compared to conventional devices.

In this case, if the dividing wall 10 shown by the two-dot chain line in FIG. The splitting of the air flow becomes more and more reliable, and there is little mixing of the inside air with the outside air, so that a complete air curtain is formed.

Preparation space 13 of the spot space air curtain device 1
Or other air conditioning equipment in the ceiling.

The air conditioner 2 can be abolished or made smaller by installing a dust collecting air filter, a deodorizing device, etc.

[Effects of the Invention] As described above, the present invention is configured to form a double air curtain around the spot space, so that almost no air in the spot space can escape to the outside. Therefore, the air conditioner can be made to have extremely low output.

Furthermore, since the conditioned air is distributed throughout the spot space, it has the excellent effect of providing an energy-saving spot space air curtain device that is much wider than conventional devices and can provide a comfortable working environment. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an air curtain device for a spot space which is an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of an air curtain outlet of the air curtain device for a spot space shown in FIG. FIG. 3 is a conceptual side view showing a conventional spot space air conditioner. In the figure, 1... air curtain device for spot space, 2... air conditioner, 3... air conditioner outlet,
4...Air conditioner suction port, 5...Inside fan, 6
...Inner air outlet, 7...Outer fan, 8...
Outer outlet, 9... Supporting member, 10... Dividing wall,
DESCRIPTION OF SYMBOLS 11... Floor, 12... Operator, 13... Reserve space, 14... Rectifier, 15... Resistor, 16... Air curtain outlet. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) An air curtain outlet is installed around a spot space, which is a specific area such as a workplace, to blow air vertically from the ceiling toward the floor, and the air curtain outlet is doubled, and the outer outlet is An air curtain device for a spot space, characterized in that air sucked from outside the spot space is blown out from the air outlet, and air sucked from inside the spot space is blown out from an inside outlet. (2) At the tip of the air curtain outlet, a rectifying device for vertical laminar flow and a resistor made of a plurality of stacked mesh plates with different widths or lengths are provided in close proximity or in close contact with each other. The spot space air curtain device according to claim 1, characterized in that: