JPH0519700Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an air outlet connected to an air supply duct to blow out conditioned air into a desired working area.

(Prior Art) As an air outlet connected to an air supply duct to blow out air, for example, as shown in FIGS. Those equipped with this are used exclusively for large spaces as factory air outlets.

(Problems to be Solved by the Invention) The above-mentioned conventional device has poor blowing efficiency because the blowing air collides with the bottom plate surface within the box-shaped chamber A and causes turbulence, as shown by the arrow in FIG. Since the nozzle part is fixed, the air volume and direction cannot be adjusted, and there are many inconveniences such as noise generation.

(Means for Solving the Problems) The present invention eliminates the above-mentioned conventional disadvantages, and provides an air outlet that allows the air volume and direction to be freely adjusted, provides smooth air flow, reduces noise, and is extremely effective in use. In the obtained product, several ventilation holes were opened in the intermediate circumferential wall of a cylindrical blow-off tube with the top and bottom open, and guide vanes that could be tilted up and down were provided in the openings, and the blow-off tube was expanded at any time in the lower part of the blow-out tube. It is provided with an umbrella-shaped conical control plate that can be narrowed.

(Function) As shown in FIG. 4, the air outlet according to the present invention is connected to the air supply duct a via the branch pipe b, and the air outlet 2 is provided on the peripheral wall of the cylindrical air outlet pipe 1.
By adjusting the inclination of the guide vanes, the air from duct b is blown outward through the ventilation port 2, and the spread of the air to the sides is adjusted. By expanding the control plate 4, the air flow directly downward from the lower opening 1a of the blow-off tube 1 is controlled, increasing the amount of air from the peripheral wall ventilation port 2, and weakening the blow-out amount directly below, and vice versa. By narrowing the plate 4, the airflow characteristics can be adjusted to suit the site by changing the ventilation characteristics according to the conditions of the area of use, such as increasing the direct downstream area and controlling the amount of air flow from the surrounding wall ventilation holes to weaken the diffusion force.

Furthermore, when the use place is used close to a column C indoors as shown in FIG. 5, a ventilation hole is not opened on the side of the peripheral wall column of the blow-off pipe 1, and this part is made into a closed part 1b to avoid unnecessary air blowing. In addition, as shown in FIG. 6, a notch 1c is formed in the lower wall of the cylindrical body 1 on the opposite side to the column, so that the air blown from this part can be effectively used to improve usability in the field.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes a cylindrical blow-off tube with open upper and lower surfaces and a bulged middle part.The blow-off tube 1 shown in the embodiment of FIG. As shown in FIG. 3, this may be a cylindrical body with a swollen diameter part 1' formed in the middle, and several ventilation holes 2 are provided on the peripheral wall surface of the middle part of the blow-off tube 1. are opened, and guide vanes 3 that can be rotated in the vertical direction to adjust the inclination angle to an appropriate angle are rotatably attached to each of the ventilation holes 2 by pivoting them at both edges of the ventilation holes 2 on both intermediate sides. Established.

Furthermore, an umbrella-shaped conical control plate 4 is provided at the bottom of the inside of the blow-off cylinder 1, which can be expanded or narrowed by an operating rod 4a at any time.

(Effect of the invention) When the invention is adopted, the air is blown out by expanding or narrowing the umbrella-shaped conical control plate provided at the lower part of the inside of the blow-out tube to control the amount of air that blows directly below from the lower opening of the cylinder. By adjusting the amount of air blown out from the ventilation hole formed on the peripheral wall surface of the cylinder and adjusting the inclination angle of the guide vane of the ventilation hole, the range of outward diffusion of air can be adjusted freely. It can be used effectively depending on the situation of the blowing area, has an extremely simple structure, is easy to maintain and manage, can be obtained at a low cost, and can be used as the work layout changes.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cut-away side view, FIG. 2 is a plan view taken along the line - - of FIG. 1, FIG. 3 is a cut-away side view showing another embodiment, and FIG.
6 to 6 are side and plan views showing the state of use, FIG. 7 is a perspective view showing a conventional example, and FIG. 8 is a sectional view thereof. 1...Blowout pipe, 2...Ventilator, 3...Guide vane, 4...Control board.

Claims (1)

[Scope of utility model registration request] Several ventilation holes are opened in the intermediate circumferential wall surface of a cylindrical blow-off tube which is open at the top and bottom, and guide vanes that can be tilted up and down are provided in the openings, and the lower part of the blow-off tube can be expanded or narrowed at any time. A conditioned air outlet equipped with an umbrella-shaped conical control plate.