JPS6256733A - Air deflecting device for air-conditioning machine - Google Patents

Abstract

PURPOSE:To permit efficient ventilation by generating Coanda effect upon upward blow-off and simplify the constitution of the titled device by a method wherein a surface for inducing air from a fan is formed on the upper wall surface of upper blow-off grille of upper blow-off port so as to be bent protruded downwardly while a blow-off port in a ventilating circuit is provided with a bent air deflecting vane so as to be protruded downwardly. CONSTITUTION:The upper guide wall 1 of an upper blow-off grille 9 in a ventilating circuit 6 is bent so as to be widened gradually and upwardly while an airflow deflecting vane 10 in the ventilating circuit 6 is also bent in a similar form. Ventilating airflow is divided substantially into ventilating airflow A1 flowing along the upper surface of the airflow deflecting vane, the airflow A2 flowing along the upper guide wall, and ventilating airflow A3 flowing along the lower surface of the same vane, all of which are blown upwardly respectively. In this case, the upper guide wall 11 is provided with an arched section, therefore, the airflows upwardly without causing seperation. Accordingly, noise of ventilation is not generated in case of upward blow- off. According to this method, upward blow-off can be effected smoothly to improve a function as the air-conditioning machine, while deflecting angle of upward blow-off can be enlarged.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wind direction changing device for an air conditioner.

Conventional technology Conventional air conditioner airflow direction changing devices blow out hot air downward during heating and horizontally when cooling air, in order to further improve the comfort of air conditioning. 2. Description of the Related Art A device is known that uses a wind direction changing blade to change the wind direction to enhance the sensory effect.

Problems to be Solved by the Invention However, in the case of a floor-standing air conditioner with such a configuration, the cold air directly hits the human body, so it is necessary to change the direction of the cold air upward. With one side air outlet, the deflection angle is insufficient for cooling and heating, and if you try to forcefully secure the deflection angle, the noise will increase and a short circuit will occur where the blown air is directly sucked. It is necessary to blow air from the lower outlet and cool air from the upper outlet, and furthermore, to blow the air from the upper outlet upward, but this operation is difficult due to noise and other problems.

The present invention solves the above-mentioned problems by generating the Coanda phenomenon during upward blowing to enable efficient air blowing, and by making the structure for this function also serve as the structure of the upper blowing grill. This is intended to simplify the configuration.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a structure in which a surface portion that attracts air from a blower is directed downward on the upper wall surface of the upper air outlet grille of the upper air outlet in the ventilation circuit of an air conditioner. The wind blower is formed in a straight line so as to protrude from the side, and furthermore, a curved wind direction changing blade is provided at the air outlet inside the ventilation circuit so as to protrude downward.

This method works because the upper wall surface has a curved surface that faces the curved surface of the wind direction changing blade when blowing upward.

The Coanda phenomenon occurs, allowing air to be blown upward without causing peeling, and no noise is generated when air is blown.

EXAMPLE 9 An example of the present invention will be described below with reference to the accompanying drawings.

First, the schematic structure of an air conditioner will be explained with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes an air conditioner main body, and a front grill 4 is attached to the front surface thereof, and has a suction port 2 at the center and a lower air outlet 3 at the bottom. Reference numeral 5 denotes an upper Suita outlet provided at the upper part of the air conditioner main body 1. 6 is a ventilation circuit formed inside the main body of the air conditioner; a heat exchanger 7;
A blower 8 is provided respectively.

Next, the structure of the upper air outlet will be explained with reference to FIG.

Upper guide wall 11 of upper outlet grille 9 in ventilation circuit 6
are curved so as to gradually widen upward, and the wind direction changing blades 10 inside the air blowing circuit 6 are also curved in the same shape as the upper guide wall 11.

In the above configuration, the air flow during top blowing will be explained.

As shown in Figure 1, the upward airflows are air flow A flowing along the upper surface of the wind direction changing blade, air flow A2 flowing along the two-part guide wall, and air flow A flowing along the lower surface of the wind direction changing blade.
It is broadly divided into three types, each of which is blown upward. At this time, since the upper guide wall 11 is provided with an arcuate portion, the air flows upward as the peeling 1'2 occurs.

Therefore, upward blowing can be performed without generating air blowing noise.

Effects of the Invention As described above, in the present invention, the upper guide wall of the upper blow-off grille, which causes the Coanda phenomenon to occur, is curved so as to gradually expand upward, and the wind direction changing vanes inside the blower circuit are also curved in the same manner as the upper guide wall. This curve allows smooth upward blowing, improves the function of the air conditioner, and increases the upward deflection angle.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of the upper outlet of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a perspective view of the same air conditioner. 1...Air conditioner body, 2...Suction port, 4...Lower outlet, 5...Upper outlet, 6...・Ventilation circuit. 8...Blower, 9...Upper blow-off grille, 10...Wind direction changing blade, 11...Upper guide wall. Name of agent: Patent attorney Toshio Nakao and 1 other person5-
--Inspection of the 1st part outlet 11-11 engineering department

Claims (1)

[Claims] An air conditioner body having an inlet, an upper outlet, and a lower outlet is provided with a ventilation circuit that communicates the inlet and the outlet, and a blower located within the ventilation circuit. A wind direction changing device for an air conditioner, which has a wind direction changing blade and an upper blowout grille at the outlet, and the upper guide wall of the upper blowout grille is curved upward so as to gradually widen.