JPS585887Y2 - air conditioner - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an air conditioner equipped with a fixed grill.

The object of the present invention is to provide an air conditioner that combines a fixed grille with both sides facing outward, and an automatic airflow direction change device, whereby the Coanda effect is produced.
The air blowing angle is expanded and the indoor temperature distribution can be improved.

As shown in FIGS. 1 to 3, a conventional automatic wind direction changing device is provided in front of a plenum chamber 22 of an air conditioner 10, and has a large number of movable blades 26, one end of which is connected to the airframe. While being supported by the rotation shaft 39 on the side,
Rotating shaft 41 with the other end erected on the connecting plate 30...
・It is pivoted on.

Then, the connecting plate 30 reciprocates in the horizontal direction using the rotating shaft 39 on the body side as a fulcrum by the drive of the cam drive device A, and the rotating shaft 41 of the connecting plate 30...・・・
- The air blowing direction at the air outlet 20 is automatically changed by reciprocating from side to side.

The cam drive device A includes an electric motor 35, a cam eccentric shaft 36,
It consists of a cam groove 38.

Note that 23 is a fixed grill consisting of a group of vertical blades facing uniformly forward, 25 is a horizontal blade, and 12 is a side plate of the air outlet 20.

When a conventional automatic wind direction change device is driven, for example, the fifth
When the movable blade 26 faces to the right as shown in the figure, the wind direction angle on the side with the outlet 20 is as indicated by the dotted line arrow in Figure 5; the same as the wind direction angle on the left side of the outlet 20. It is impossible to receive a wide range of wind directions and angles beyond that angle, resulting in uneven temperature distribution of the indoor air.

The present invention eliminates the above-mentioned defects and aims to equalize the temperature of the indoor air by increasing the wind direction angle and degree wider than that which can be obtained with conventional devices.

As shown in FIGS. 4 and 5, the present invention is based on an air conditioner equipped with an automatic wind direction changing device similar to the conventional one. .2
8 are movable blades 26', 26 provided at both ends of the connecting plate 30.
A wide range of wind directions and angles can be obtained by means of the Coanda effect through fixed grilles 24 which are provided close to each other and have both sides facing outward.

That is, as shown in FIG. 5, when the connecting plate 30 moves to the left by the drive of the cam drive device A, the movable blades 26...
... is facing right, but at this time, the right wind direction guide plate 2
8 is formed in an arc shape and is provided close to the movable vane 26' at the right end of the connecting plate 30 to the extent that it produces a Coanda effect, so that the wind passing between the wind direction guide plate 28 and the movable vane 26' The airflow A becomes a jet airflow deflected to the right through the fixed grille 24 at the farthest right side, and the airflow apertures pass between the movable vanes 26 other than the movable vane 26'. is drawn toward the air flow direction A, thereby deflecting the air flow port toward the direction C.

As a result, a wide wind direction angle can be formed on the right side of the air outlet 20.

Here, the Coanda effect means that a narrow air flow passage is formed approximately parallel to the arcuate cut line of the arcuate wind direction guide plate, and the jet air flow that deflects the air flow passage toward the arcuate cut line side is the jet air flow. This refers to attracting and deflecting airflow parallel to the

In addition, the movable blades 26 are driven by the cam drive device.
... is facing left, the air outlet 20 is the same as above.
Of course, the wind direction angle of the wide width can be changed to the left side.

As shown above, the present invention provides arc-shaped wind direction guide plates 28.28 on the inner edges of both side plates 12.12 of the air outlet 20 of the air conditioner 10 equipped with an automatic wind direction change device, and Since the fixed grille 24 is placed close to the movable blades 26' and 26' provided on the front side, and the fixed grille 24 is arranged with both sides facing outward, a Coanda effect occurs and the grille is wider than the conventional machine. This has the excellent effect of making it possible to adjust the wind direction and angle and further equalizing the indoor temperature distribution.

[Brief explanation of drawings]

Figure 1 is a perspective view of the air conditioner, Figure 2 is a vertical sectional view of the air conditioner equipped with an automatic wind direction change device, Figure 3 is a cross sectional view of the automatic wind direction change device, and Figures 4 and 5 are FIG. 2 is a cross-sectional view of an air conditioner outlet section showing an embodiment of the present invention. 10 is an air conditioner, 12 is a side plate, 20 is an air outlet, 22 is a plenum room, 23, 24 is a fixed grill, 26 is a movable blade, 28 is an arcuate wind direction guide plate, 30 is a connecting plate, 39 is the fuselage side , 40 is a rotation shaft, and A is a cam drive device.

Claims (1)

[Scope of utility model registration request] At the air outlet 20 in the plenum chamber 22 of the air conditioner 10, there are a vertical blade group in the center facing straight ahead, a vertical blade group in the left side facing diagonally outward to the left, and a vertical blade group in the right side facing diagonally outward to the right. A fixed grille 24 consisting of a group of movable blades 26 is disposed inside the fixed grille 24, and a first rotating shaft 39 provided at one end of the movable blade 26 is attached to the fuselage side. , a second rotating shaft 41 provided at the other end is pivotally supported on the connecting plate 30, and the connecting plate 30 is connected to the first rotating shaft 39...
A driving device A is provided that moves forward and backward in the horizontal direction with ... as a fulcrum.
An air conditioner characterized in that wind direction guide plates 28, 28 each having an arcuate cross section are erected on the inner edge of the air conditioner in close proximity to movable blades 26', 26' provided at both ends of a connecting plate 30.