JPS6210553A - Air flow deflection device for air conditioner - Google Patents

Abstract

PURPOSE:To prevent a reduction of air flow due to its hitting the side walls even if the air flow is greatly deflected in the lateral deflection and enlarge the angle of lateral air flow deflection by shaping the side walls of the outlet grill into curved walls expanding toward the direction of outlet to widen the areal size of the outlet. CONSTITUTION:Vanes 9 for lateral air flow deflection rotatably disposed in the outlet passage 3a of the outlet grill 3 are formed in the shape of arc. Side walls 3b of the outlet grill 3 are gradually widened toward the direction of outlet in conformance to the direction of the curved part of the lateral air flow deflection vanes 9. The reason why the lateral air flow deflection vanes 9 are curved is to deflect the air flow by the Coanda effect in cooperation with the curvature of the side walls 3b. When the air blown by a fan (windward) is laterally deflected by the lateral air flow deflection vanes 9 in the outlet passage 3a, the air will flow to the leeward side along the side walls 3b of the outlet, resulting in a significant improvement of reduction of air flow.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a wind direction changing device for an air conditioner.

2. Description of the Related Art Conventionally, this type of air conditioner has been constructed as shown in FIGS. 4 and 5.

In the figure, 1 is the main body of the indoor unit, and the suction port 2a
A front grille 2 is provided with an air outlet 2b, and air outlet grilles 1 and 3 are provided with a rectangular air outlet passage 3a having short sides and long sides. Reference numeral 4 denotes a ventilation circuit formed between the main body 1 and the front grille 2, which communicates with the suction port 2a and the blowout passage 3a, and has a heat exchanger forming a part of the refrigeration cycle inside. 5 and a blower 6 are provided. 7
That's the speech bubble! Vertical wind direction changing blades whose ends are rotatably incorporated in the left and right side walls, which are the short sides of J/m/3, and 8 are a plurality of vanes rotatably incorporated into the long side surfaces of the outlet grille 3. The left and right wind direction changing blades are shaped like flat plates as shown in Figure 5.

Problems to be Solved by the Invention However, with such a structure, when the air passing through the air outlet glue lV3 is largely deflected to the left and right, the width of the air outlet 2b does not change and the wind is deflected from side to side. There was a problem in that the air volume was greatly reduced due to collision with the wind direction changing blade 8, and the left and right deflection angle could not be made very large.

As shown in Figure 5, this is done from the windward side of the outlet grille 3.
The wind that has passed through the air outlet channel 3a hits the flat left and right wind direction changing vanes 8, is forcibly deflected to the left and right, and then hits the left and right end walls of the air outlet 3, increasing resistance. This results in a decrease in air volume, which also affects, for example, a decrease in heating and cooling capacity.

Therefore, the present invention prevents the wind from hitting the left and right end walls of the outlet grille 3 and reducing the wind even if the wind is largely deflected to the left and right, thereby making it possible to obtain an even larger left and right deflection angle of the wind.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is that both left and right end walls of the outlet grill are curved walls that spread in the direction of the outlet;
This is an enlarged outlet area of the air outlet.

For production The effect of this technical means is as follows.

That is, when the wind is deflected by the left and right wind direction changing blades, in the present invention, the wind passing through the outlet is deflected by the left and right wind direction changing blades, and the subsequent wind is less likely to hit the left and right end walls of the outlet grille. It is deflected greatly to the left and right. Also, the loss of air volume can be reduced.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3 of the drawings. Here, the same parts as in the conventional example are given the same reference numerals and the description thereof will be omitted.

In the figure, reference numeral 9 denotes a left-right wind direction changing blade rotatably provided in the blow-off passage 3a in the blow-off grille a, which is formed in an arc shape as shown in FIG. The left and right side walls 3b of the outlet grille 3 gradually widen toward the outlet in accordance with the direction of the curved portion of the left and right wind direction changing blades 9. The reason why the left and right wind direction changing blades 9 are curved is to change the wind direction by the well-known Coanda effect together with the curves of the left and right side walls 3b.

As a concrete demonstration of the effects of the present invention, FIG. 3 shows experimental results showing the relationship between the wind deflection angle and the air volume reduction rate in the conventional example and the example.

As is clear from this result, when the wind sent from the blower (windward side) is deflected to the left and right by the left and right wind direction changing blades 9 within the blowout channel 3a, the left and right side walls 3b of the blowout outlet
The river will flow to the leeward side along the river, which will greatly improve the deterioration of the landscape.

In this embodiment, the wind direction is changed by the Coanda effect, but the same effect can be expected even if the wind direction is forcibly changed using flat left and right wind direction changing blades as in the past.

Effects of the Invention As described above, the present invention expands the area of the outlet by forming the left and right side walls of the outlet grill into curved walls that spread in the outlet direction, thereby increasing the left and right deflection angle of the air, and reducing the amount of air flow in that case. It will be extremely rare. This significantly improves the feeling during heating and cooling operation, and also provides the effect of increasing power savings during heating.

[Brief explanation of drawings]

Fig. 1 is a sectional view of essential parts of an air conditioner showing an embodiment of the present invention, Fig. 2 is a perspective view of the same air conditioner, and Fig. 3 is an air volume reduction rate deflection angle of the same air conditioner and a conventional example. FIG. 4 is a vertical cross-sectional view of a main part of a conventional air-electric conditioner, and FIG. 5 is a plan cross-sectional view of the air outlet. 1...Body, 2...Front grill, 3.
Old...Blowout grille, 3b...Both left and right walls, 5...
Old...Heat exchanger, 6...Blower, 7...
- Vertical wind direction changing blade, 9... Left and right wind direction changing blade. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 1... Water bowl 31. U missing color grill λ1- Top I buy 7 cod (Bottom Isadasu!... Hon Ine 8...Left la bottom 100 Omotesarahafuku 3rd picture

Claims (1)

[Claims] an indoor unit main body equipped with an air blower; an air outlet grill provided on the indoor unit main body and forming a rectangular air outlet passage having short sides and long sides; and an air outlet grille attached to the indoor unit main body and continuous with the air outlet grille. a front grille equipped with an air outlet, left and right wind direction changing blades rotatably provided at predetermined intervals on the long sides of the air outlet grille, and left and right side walls with both ends corresponding to the short sides of the air outlet grille; The air conditioner is configured with rotatably supported vertical wind direction changing blades, and the left and right side walls of the outlet grille are curved walls that gradually expand in the direction of the air outlet to change the wind direction of the air conditioner. Device.