JPS6036533B2 - air blowing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an air blowing device that is installed in an air conditioner, a heater, etc., and is equipped with a so-called self-swinging louver that continuously deflects the direction of blowing air at a blow-out port. The purpose is to ensure that a sufficient amount of air is blown over a wide area.

Conventionally, in a blowing device that uses this type of self-swinging louver, the deflection of the blowing air, that is, blowing air not only in the center of the blow-off port but also in the left and right directions, is done by swinging the blowing air outside the fan motor. This was done by colliding with many louvers.

In other words, as shown in Fig. 5, the left and right direction (
By swinging in the direction of arrow P), air can be blown out not only to the central part A of the air outlet opening but also in left and right directions B and C.

However, as the deflection increases in the left and right directions B and C, the collision resistance between the air blown by the fan motor and the Louby increases, making it impossible to achieve the same range as in the center area A. That is, as shown in the figure, the air does not reach the left-right direction B'C', which is the same radius as the central part A. The present invention has been made to overcome these drawbacks.

Hereinafter, the present invention will be described with reference to the accompanying drawings showing one embodiment thereof.

In the figure, 1 is a cooling fan body equipped with an air blowing device;
An indoor air intake port 2 and a conditioned air (cold air) outlet 3 are provided on the front surface.

These inlets 2 and outlets 3 are connected to a dew pan 4 made of a heat insulating material.
, and is transported by an air passage 6 formed of a fan casing 5. In this passage 6, an evaporator 7 and a fan motor 8, which form part of a well-known cooling cycle, are respectively arranged. The air outlet 3 has horizontal louvers 9, 9, . . . supported horizontally by the left and right frames 3a, 3a of the air outlet 3.
..., and the pivot parts 10a, 10a are attached to the upper and lower frames 3b, 3b.
. . . supported vertical self-swinging louvers 10, 10 . . . are provided. The self-swinging louvers 10, 10, . . . are configured to swing continuously in the left-right direction of the air outlet 3 by a swinging device 11. That is, this rocking device 11 includes a drive motor 12, an eccentric cam 13 fixed to a rotating shaft 12a of this motor 12, and a louver movement lever 14. This louver interlocking rod 14 has a connecting portion 14a and a cam holder portion 14.
b, and the swinging louvers lo, lo.・・・・・・・・・Matsu Branch 10a, 10a
．．・・・． ...Latching parts 10b, 10b provided on the opposite side
. . . While being movably locked, the eccentric cam 13 is set free at the cam holder portion 14b. On the other hand, the rotation speed of the fan motor 8 can be continuously changed by a rotation speed control device 15 shown in FIG.

FIG. 4 is a schematic example of a control circuit. To explain it, a fan motor 8 and a semiconductor element 18 with a control pole are connected in series to a power supply 17, and a sliding type variable A series circuit of a resistor 19 and a capacitor 20 is connected. The gate electrode of the element 18 is connected to a connection point between a variable resistor 19 and a capacitor 20 via a trigger diode 21. Therefore, the number of rotations of the fan motor 8 can be continuously changed depending on the resistance value of the variable resistor 19. This sliding variable resistor 19 is a cam holder portion 14b of the louver interlocking rod 14.
is fixed to the lower frame 3b of the air outlet 3 facing the front of the
On the other hand, the movable contact piece 19a of this resistor 19 is fixed to the cam holder portion 14b. As for the resistor 19, when the short piece 19a is in the center, the resistance at the output end becomes large.
The resistance value gradually decreases toward the left and right sides. That is, when the bush pieces 19a are located on both the left and right sides of the resistor 19, the swinging louvers 10, 10
. . . is also oriented in the left-right direction and has a small resistance value, so the fan motor 8 rotates at high speed.
Further, when the contact piece 19a is located at the center of the resistor 19, that is, when the louvers 10, 10, . . . are perpendicular to the front surface, the fan motor 8 rotates normally. 3
In other words, the swinging louvers 10, 10...
When the fan motor 8 is perpendicular to the front surface, the fan motor 8 normally rotates and the blown air reaches a predetermined distance, and the louvers 0, 10
. . . faces toward the left and right, the fan motor 8 rotates at high speed, and even if the blown air collides with the louvers 10, 10 . . . The louvers 10, 10, . In addition, in the above embodiment, a cooling air fan was explained, but
It is also possible to use a blowing device such as a hot air blower, and although the rotation speed control device 15 of the fan motor 8 uses phase control of an AC motor, it goes without saying that there are other methods such as using a wind pressure detector. do not have. The same thing applies to the upward and downward blowing. As is clear from the above description, the zero air blowing device of the present invention includes a self-swinging louver that continuously deflects the blowing direction with respect to the air blowing outlet by a swinging device having a louver interlocking rod, and a fan motor. and a rotation speed control device consisting of a semiconductor element with a control pole connected in series with the fan motor and a variable resistor connected in parallel to the semiconductor element with the control pole, and an operating part of the variable resistor is connected to the louver interlocking rod. The louver is connected to the louver interlocking rod so that the resistance value decreases as the louver moves from side to side.The distance that the air reaches from the air outlet is determined by the degree of deflection of the swinging louver, as in the past. It is uniform over a wide range, and the installation location of the main body is no longer limited, and the number of uses is increased.

In addition, by rotating and moving the automatic swinging louver as a control means of the rotation control device, the configuration can be simplified, and assembly can be done together with the automatic swinging louver, making it easier to assemble. It has advantages.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a cooling fan equipped with an air blowing device according to an embodiment of the present invention, FIG. 2 is a partial sectional view taken along the 0-Ro' line in FIG. FIG. 4 is a schematic electrical circuit diagram showing a fan motor rotation speed control device, and FIG. 5 is an explanatory diagram showing the state of air blown from a conventional blowing device. 3...Air outlet, 8...Fan motor, 10...Automatic rocking louver, 11...Rocking device, 15...Rotation Number control device. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A self-swinging louver that continuously deflects the blowing direction with respect to the air outlet by a swinging device having a louver interlocking rod, a fan motor, a semiconductor element with a control pole connected in series with the fan motor, and its control. A rotation speed control device comprising a variable resistor connected in parallel to a semiconductor element with poles is provided, and the operation section of the variable resistor is controlled so that the resistance value decreases as the louver interlocking rod moves from side to side. An air blowing device connected to a louver interlocking rod.