JPS6244262Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air volume control device that is installed inside the air outlet or suction port in air conditioning equipment, etc., and increases the effective area when fully opened compared to conventional similar devices. In addition, the wind speed changes linearly from fully open to fully closed, and the air volume distribution is uniform over the entire surface of the ventilation opening without deviation in direction.
Two conical plates 1 and 2 with the large diameter side open and the small diameter side closed are overlapped inside and out, and they are rotatably attached to each other at the center of the small diameter side to form an integral body. At the same time, a plurality of ventilation holes 3 and 4 are provided on each inclined wall surface of both conical plates 1 and 2 at equal intervals along the axial direction, so that air can be communicated between both conical plates 1 and 2 to duct a. The axial direction is aligned with the wind flow direction inside the suction port or the blowout port b, and one of the plates 1 and 2 is immovably attached.

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

In the drawing, 1 and 2 are conical plates of approximately the same size, with the large diameter part open and the small diameter part closed, and these are overlapped inside and out and pivoted at the center of the end of the small diameter part so that they are connected to each other. Each conical plate 1, 2 is integrated so as to be rotatable.
A plurality of ventilation holes 3 and 4 are provided along the axial direction at equal intervals on the inclined wall surface. In the illustrated example, ventilation hole 3,
4 shows a case in which the openings of the respective plates 1 and 2 are approximately 50% by forming them to have the same size as the width of the intervals 5 and 6, but the opening ratio, that is, the ventilation hole 3 ，
The size of 4 is arbitrary.

As shown in FIG. 4, the plate bodies 1 and 2 are placed in the air inlet or outlet b communicating with the duct a, with their axes aligned in the flow direction of the air. Fix and install either one of 2.
The air volume control device constitutes an air volume control device that arbitrarily adjusts the air volume from fully closed to fully open by rotating the other movable side plate 1 with respect to the fixed plate 2 to change the overlapping opening degree of the ventilation holes 3 and 4. did.

In addition, in order to fix one of the plates, as shown in the figure, extend the mounting edge 7 on the large diameter side of the conical plate 2 and provide an appropriate number of hook-shaped notches 9 in the fixing part. Appropriate means such as detachably engaging with the provided pin 10 may be employed. In the figure, reference numeral 8 indicates a protrusion for rotating the movable side plate 1 using the head piece of the shaft piece for coupling both plates 1 and 2, and the protrusion 8 is provided with a groove to engage a screwdriver or the like. I made it rotate.

In the air volume control device according to the present invention, the conical plate 1,
Ventilation holes 3 and 4 are provided along the axial direction on the inclined wall surface of No. 2, respectively.
Because of this, it is possible to provide ventilation holes that are longer in the radial direction than conventional ventilation holes provided on a circular flat plate, and in fact, when the area is the same two-dimensionally, the ventilation holes provided on a conical surface are longer than those provided on a flat plate. has a larger effective area, and therefore the air volume when fully opened is larger than before.

Furthermore, with the conventional blade type, there is variation in the wind speed from fully closed to fully open as shown in the diagram shown in Figure 5A, but with the inventive type, the wind speed varies from fully closed to fully open as shown in the diagram B in the same figure. In addition, since the conical plates 1 and 2 were installed with their axes aligned with the direction of the wind flow inside the ventilation opening, the entire surface of the conical plates 1 and 2 was aligned with the direction of the wind flow. This has the advantage that the entire surface of the air can be used effectively and with uniform air distribution.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a plan view showing two conical plates constituting the air volume control device of the present invention bonded together, and Fig. 2 is a cut side view of the same. 3 is an exploded perspective view of a conical plate, FIG. 4 is a cutaway side view of the device of the present invention, and FIG. 5 is a characteristic graph of the device of the present invention in comparison with a conventional device. 1, 2... Conical plate, 3, 4... Ventilation hole, a
...Duct, b...Suction or outlet.

Claims (1)

[Scope of utility model registration request] Two conical plates 1 and 2 with the large diameter side open and the small diameter side closed are overlapped inside and out, and they are rotatably attached to each other at the center of the small diameter side to form an integral body. At the same time, a plurality of ventilation holes 3, 4 are provided along the axial direction at equal intervals on each inclined wall surface of both conical plates 1, 2, and both conical plates 1, 2 are communicated with duct a. An air volume control device for an air outlet and an air inlet, in which the axial direction of the air inlet or outlet b is along the wind flow direction, and one of the plates 1 and 2 is immovably attached.