JPS60228843A - Airflow derection converter for air conditioner - Google Patents

Abstract

PURPOSE:To prevent suction and noise due to generation of eddy and improve reliability by a method wherein the thickness of section of a lateral blade is increased gradually from one end to the other end thereof and the rear surface of the blade, against which blow-off air collides, is formed by a curved surface. CONSTITUTION:The thickness of the lateral blade 7 is increased gradually from one end 7a to the other end 7b and the rear surface thereof, against which blow- off air collides, is formed by curved surface. The end 7b, abutting against the lower tip end 3c of a discharging port 3 and having larger thickness in the section thereof, is formed into an concave curved surface, similar but reverse to the lower tip end 3c of the discharging port 3. Support plates 7c and provided at both ends of the blade and shafts 7d are provided on one part of the plates while the blade is mounted rotatably between both walls 3, 3b of the discharging port 3. The lateral blade 7 is made by an integral form and the inside thereof is formed by a foamed heat insulating body.

Description

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

[Background of the invention]

A conventional wind direction converting device for an air conditioner is explained in detail in FIGS. 1 and 2. %1 is a base integrally forming the casing 1a, and n2 is a blower attached to the base 1. 6 is a decorative cup (-) which integrally forms a suction port 3a at the top and a discharge port 3b at the bottom, and the lower end 6C of the discharge port 3b has an R-shaped curved surface.4 is a plurality of vertical blades. is rotatably attached to the lower part of the discharge port 6b., 5 is a horizontal blade having a substantially U-shaped cross section, and support plates 5a are provided at both left and right ends, and a shaft 5b is provided in a part of the blade. It is rotatably attached to both side walls of the discharge port 5b by a shaft 5b.

A heat insulating material 6 is bonded to the substantially U-shaped inside of the horizontal blade 5 to prevent dew from forming on the horizontal blade 5.

In an air conditioner that is installed on the top of a wall and performs heating and cooling operations, the discharge air is generally blown directly downward during heating and horizontally during cooling, in order to improve the temperature distribution during each operation. In the wind direction changing device shown in FIG.
(b) and move it to the position shown by the solid line during heating and to the position shown by the broken line during cooling, but since the cross-sectional shape of the horizontal blade 5 with the heat insulating material 6 attached is flat, the longitudinal direction Twisting is likely to occur.

In addition, a step is formed between the lower end 6C of the discharge port 6b and the lower end 6C of the discharge port 6b at the moment of cooling, and there is a possibility that a vortex is generated there, causing a backflow of the discharged air and generation of noise. Furthermore, during heating, the discharged air that hits the insulation material 6 of the side blades 5 at right angles receives a force in the opposite direction and the wind speed becomes extremely weak, and is pushed by the discharged air that does not hit the side blades 5 and blows in the direction of the arrow. Therefore, the wind direction cannot be changed sufficiently. Further, although the heat insulating material 6 is bonded to the horizontal blade 5, it is constantly exposed to wind pressure, resulting in poor reliability and high cost.

[Object of the Invention] The present invention has been made in order to improve the above-mentioned defects.

[Summary of the invention]

In the present invention, the widthwise cross-section of the horizontal blade is gradually increased from one end to the other, and the back surface that is exposed to the discharge air is curved, and the horizontal blade is an integrally molded product whose inside is made of foamed heat insulating material. This is what I did.

[Embodiments of the invention]

The present invention will be explained below with reference to an embodiment shown in FIG. Same code as the conventional example! ri indicates the same thing.

Reference numeral 7 denotes a horizontal blade whose cross section in the transverse direction gradually increases from end 7a to end 7b, and whose back surface, which is exposed to the discharge air, is curved. Further, the end surface 7b which abuts the lower tip 6C of the discharge port 3b has a larger cross section, and its shape is a concave curved surface that is inversely similar to the lower tip 6C of the discharge port 5b, which has an R-shaped curved surface. A support plate 7C is provided at both left and right ends, and a shaft 7d is provided in a part of the support plate 7C, and the shaft 7d allows the discharge port 5b to be opened.
It is rotatably mounted on both sides of the wall. Also horizontal blade 7
is an integrally molded product with a foamed insulation inside.

In the wind direction changing device having such a structure, the horizontal blade 7 is rotated about the shaft 7d as a fulcrum, and the position shown by the solid line is at the time of heating, and the position shown by the broken line is set so that the concave curved end 7b abuts the lower tip 6C of the discharge port 6b at the time of cooling. It is moved to the position of .

〔Effect of the invention〕

In the present invention, the cross section of the transverse blade 7 in the transverse direction is gradually enlarged from the end portion 7a to the end portion 7b, so that twisting in the longitudinal direction is less likely to occur. In addition, the back surface of the horizontal blade 7 that is exposed to the discharge air is a curved surface, and the end 7b that contacts the lower tip 6C of the discharge port 3b has a concave curved surface that is inversely similar to the lower tip 3C. The concave curved surface portion of the end portion 7b abuts the lower tip 6C, eliminating the step, and the curved surface portion of the back surface forms a style, so the discharged air is rectified, eliminating the risk of suction or noise generation due to vortex generation.

Furthermore, during heating, the discharged air that hits the back side of the horizontal blade 7 receives force in the direction along the curved surface, so the wind speed does not weaken much and the horizontal blade 7
It pushes the discharged air that is trying to be discharged forward without hitting it, and blows it out in the direction of the arrow, making it possible to sufficiently change the direction of the wind. Furthermore, since the horizontal blade 7 is an integrally molded product with the inside made of foamed heat insulating material, it has excellent reliability, is lightweight, and is inexpensive.

[Brief explanation of drawings]

Fig. 1 is a perspective sectional view of an air conditioner equipped with a conventional wind direction changing device, Fig. 2 is an enlarged view of the main part of Fig. 1, and Fig. 6 is an enlarged view of the main part equipped with the wind direction changing device of the present invention. It is. 1...Base, 2...Blower, 3...Decorative cover, 3a...Suction port, 6b...Discharge port, 6C...Discharge port lower light end, 4...Vertical blade , 5... Conventional horizontal blade, 6... Insulating material, 7... Horizontal blade of the present invention, 7a,
7b... end, 7C... support plate, 7d... shaft. High 1 figure η Z figure 3

Claims (1)

[Claims] 1. In an air conditioner that changes the wind direction by moving the horizontal blades vertically or horizontally depending on the operating state during heating or cooling operation, the widthwise cross section of the horizontal blades is set at one end. A wind direction converting device for an air conditioner, which is characterized by gradually increasing in size from one end to the other end, and having a curved surface on the back surface where the discharge air hits.2. 2. A wind direction converting device for an air conditioner according to claim 1, which has a large concave curved surface having a shape inversely similar to the lower end of the discharge port. 6. The wind direction converting device for an air conditioner according to claim 1, wherein the horizontal blade is an integrally molded product, and the inside is formed of a foamed heat insulating material.