CN110319558B - Air outlet structure and air conditioner - Google Patents

Abstract

The present invention provides an air outlet structure, including an air guide and an air outlet, wherein the air guide includes a first air guide surface and a second air guide surface arranged opposite to each other along the thickness direction thereof, wherein the first air guide surface is an arc surface, and the second air guide surface is a plane surface, and the cross section of the air guide along the thickness direction thereof is an arc portion and a straight portion connected end to end, wherein the distance between the two end points of the straight portion is h1, and the distance between the vertex of the arc portion farthest from the straight portion and the straight portion is h2, and the range of h1/h2 is [2,4]. The present invention can realize the simultaneous change of wind direction on both sides by combining the plane and the arc surface of the air guide, and the arc surface air guide can realize the Coanda effect, and the wind gradually changes its direction along the arc surface, and can realize a variety of air outlet modes, and the arc surface design prolongs the air supply distance, and the comfort of air guide is better.

Description

Air outlet structure and air conditioner

Technical Field

The present invention relates to the technical field of air conditioning, and in particular to an air outlet structure and an air conditioner.

Background Art

In order to achieve air outlet, the air conditioner is provided with an air outlet structure at the air outlet of the air duct. The air outlet structure in the prior art is usually a one-piece air guide plate or a louvered air guide plate, and the air guide plate is rotated upward or downward to achieve upward or downward air guide.

The air outlet structure in the prior art still has the following problems: first, when the wind blows out from the air duct, the sheet-like straight plate air guide plate structure can only change the wind direction on one side of the air guide plate, and the wind direction on the other side remains unchanged due to the restriction of the air duct structure; second, when the air output is too large, the sudden change of direction of the air guide plate has a great impact on the air volume, resulting in poor comfort; finally, the setting of the louvered air guide plate or multi-air guide plate structure in the prior art has many parts and is prone to structural instability.

Summary of the invention

The problem solved by the invention is that the wind direction of the wind guide plate in the prior art is single, the comfort is poor and the structure is unstable.

To solve the above problems, the first aspect of the present invention provides an air outlet structure, including an air guide member and an air outlet, the air guide member including a first air guide surface and a second air guide surface relatively arranged along its thickness direction, characterized in that the first air guide surface is a curved surface, the second air guide surface is a plane, the cross-section of the air guide member along its thickness direction is an arc portion and a straight line portion connected end to end, the central angle corresponding to the arc portion is not greater than 180°, and the arc surface can realize the Coanda effect.

The combination of the plane and the arc surface of the air guide of the present invention can realize the simultaneous change of wind direction on both sides; the arc surface air guiding can realize the Coanda effect, the wind gradually changes direction along the arc surface, and a variety of air outlet modes can be realized; the arc surface design extends the air supply distance, and the comfort of air guiding is better.

The second air guide surface adopts a flat structure, which can ensure a large air output volume, while avoiding the air outlet direction of the second air guide surface being opposite to the air outlet direction of the curved surface, which would interfere with the Coanda effect.

The central angle corresponding to the arc portion is no more than 180°, which is a minor arc design, that is, the arc surface is relatively flat, the purpose of which is to achieve the Coanda effect while minimizing the shielding of the air outlet without affecting the wind speed and air volume.

Furthermore, the distance between the two end points of the straight line portion is h1, the distance between the vertex of the arc portion farthest from the straight line portion and the straight line portion is h2, and the range of h1/h2 is [2,4].

The selection of this range has been verified by experiments, and the Coanda effect, air outlet speed and air outlet volume are optimal.

Furthermore, the air outlet includes an upper wall and a lower wall, and the first air guiding surface and the upper wall and the lower wall of the air outlet can form an air flow channel.

Furthermore, the width of the airflow channel is 4-15 mm, so that the Coanda effect of the first air guide surface is most significant.

Furthermore, a rotation shaft is provided at both ends of the air guide member along the length direction, and the rotation shaft is rotatably connected to the side walls at both ends of the air outlet to realize the rotation of the air guide member.

Furthermore, the rotation axis is equidistant from the upper and lower walls of the air outlet, and is located in the middle of the straight portion, so that the widths of the airflow channels formed when the first air guide surface is close to the upper and lower walls are equal.

Furthermore, the arc portion includes a circular arc, an elliptical arc or an irregular curve.

Furthermore, the air guide member is integrally formed, or the first air guide surface and the second air guide surface are integrally formed and then welded to the two side plates.

Furthermore, the air guide member is a hollow structure, and is provided with ventilation holes, which are used as ventilation holes for gas-assisted molding and for discharging water vapor.

Furthermore, the vent hole is arranged in the middle or at the end of the first wind guide surface and close to the second wind guide surface; and/or is arranged on at least one side of the two side plates of the wind guide member.

Another aspect of the present invention provides an air conditioner, comprising the air outlet structure as described above.

The beneficial effects of the present invention are as follows: the combination of the plane and the curved surface of the air guide can realize the change of wind direction on both sides at the same time, the curved surface air guide can realize the Coanda effect, the wind gradually changes the wind direction along the curved surface, and a variety of air outlet modes can be realized; the curved surface design prolongs the air supply distance, gradually changes the wind direction along the curved surface, reduces the turbulence caused by the rapid turning of the air outlet of the air conditioner, and the comfort of the air guide is better; the width of the air flow channel between the curved surface of the air guide and the upper and lower walls of the air outlet is set to 4-15mm, which can enhance the effect of the Coanda effect. In addition, the air guide of the present invention has a simple structure, uses a single air guide to achieve the switching of the wind direction, has low noise, and is easy to implement.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of an air guide member of the present invention;

FIG2 is a schematic diagram of the cross-sectional structure of an air guide member of the present invention;

3a and 3b are schematic structural diagrams of an air outlet of an air conditioner according to the present invention;

FIG4 is a schematic diagram of a first use state of the air guide member of the present invention;

FIG. 5 is a schematic diagram of a second usage state of the air guide member of the present invention.

1-air guide member; 11-first air guide surface; 12-second air guide surface; 13-rotating shaft; 14-side plate; 15-ventilation hole; 2-air outlet; 21-upper wall; 22-lower wall; 23-side wall; 3-air flow channel.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in Figures 1-3, the present invention provides an air outlet structure, including an air guide member 1 and an air outlet 2, the air guide member 1 is long and narrow, including a first air guide surface 11 and a second air guide surface 12 relatively arranged along its thickness direction, the first air guide surface 11 is an arc surface, the second air guide surface 12 is a plane, the cross-section of the air guide member 1 along its thickness direction is an arc portion and a straight line portion connected end to end, the central angle corresponding to the arc portion is not greater than 180°, which is a minor arc, and the arc surface can realize the Coanda effect.

The air guide 1 can realize the simultaneous change of wind direction on both sides by combining plane air guide and arc air guide. The arc air guide can realize the Coanda effect. The wind gradually changes direction along the arc surface, extending the air supply distance, and can further reduce the turbulence caused by the rapid turning of the air outlet of the air conditioner, so that the air guiding comfort of the air guide 1 is better.

The second air guide surface adopts a flat structure to ensure a large air volume, while preventing the air outlet direction of the second air guide surface from being opposite to the air outlet direction of the curved surface, thereby preventing interference with the Coanda effect. The arc portion includes one or more of a circular arc, an elliptical arc or an irregular curve, preferably a circular arc.

Furthermore, the distance between the two end points of the straight line portion is h1, the distance between the vertex of the arc portion farthest from the straight line portion and the straight line portion is h2, and the range of h1/h2 is [2,4], which further enhances the Coanda effect.

The above distance to the straight line portion is interpreted as: the distance from each point on the arc portion to the straight line portion in the normal direction of the straight line portion.

When h1/h2 is equal to 2 and the arc portion is a circular arc, the central angle of the arc is 180°, and the cross-section of the air guide member 1 along its thickness direction is a semicircle.

When h1/h2 is greater than 2 and less than or equal to 4, that is, when the range of h1/h2 is (2,4], the arc angle of the arc portion is smaller than the arc angle of the semicircle, and the corresponding central angle is smaller than 180°.

The central angle of the arc portion is no more than 180°, which is a minor arc design, that is, the arc surface is relatively flat, the purpose of which is to achieve the Coanda effect while minimizing the shielding of the air outlet without affecting the wind speed and air volume.

The air guide member 1 is arranged at the inner edge of the air outlet 2 , and the length direction of the air guide member 1 is arranged along the length direction of the air outlet 2 .

Preferably, the selection of the above-mentioned curvature can be based on the curvature of the outer surface of the casing at both ends of the air outlet 2, and can be kept consistent, so that a consistent arc outer surface is formed from the outside, achieving an aesthetic effect. Of course, a movable appearance baffle can also be set at the air outlet 2, which can completely cover the air guide 1 when the air conditioner is in the off state, so that it is not necessary to consider whether the curvature of the air guide 1 is consistent with the curvature of the outer surface of the casing at both ends of the air outlet 2.

Specifically, the air guide member 1 includes a middle portion formed by a first air guide surface 11 and a second air guide surface 12, and preferably also includes side panels 14 at both ends. Preferably, the air guide member 1 is integrally formed, or the first air guide surface 11 and the second air guide surface 12 are integrally formed and then welded to the two side panels 14. The forming method is preferably gas-assisted.

The air guide 1 is a hollow structure (Fig. 2), and a vent 15 is provided on the air guide 1. Preferably, the vent 15 can be arranged in the middle or end of the first air guide surface 11, and preferably arranged near the second air guide surface 12; it can also be arranged on at least one side plate 14 of the two side plates 14 of the air guide 1, or the vent 15 can be arranged at both places. On the one hand, the vent 15 can be used as a vent during gas-assisted molding, and on the other hand, the water vapor inside the air guide 1 can be released from the vent 15 to keep the hollow structure inside the air guide 1 dry.

The air guide 1 is provided with a rotating shaft 13 at both ends along the length direction, and the rotating shaft 13 is rotatably connected to the two side walls 23 of the air outlet, and the side walls 23 are provided with holes that match the rotating shaft 13, or holes can be formed at both ends of the air guide 1, and the rotating shaft 13 is provided on the side walls 23 of the air outlet, or a transmission component can be further provided in the middle. Preferably, the rotating shaft 13 is driven to rotate by a motor assembly, and the motor assembly drives the air guide 1 to rotate with the line connecting the two rotating shafts 13 as the rotation axis.

As shown in Fig. 3-5, the air outlet 2 includes an upper wall 21 and a lower wall 22, and the first air guide surface 11 and the upper wall 21 and the lower wall 22 of the air outlet 2 can form an airflow channel 3. Since the width of the airflow channel 3 and the airflow velocity passing through the airflow channel 3 jointly affect the Coanda effect at the first air guide surface 11, the present invention has been demonstrated through a large number of experiments that, at the speed that can be achieved by general air conditioners (household cabinets, wall mounted units and commercial air conditioners) (generally 600-1350 rpm), when the width d of the airflow channel 3 is set to 4-15 mm, the Coanda effect of the first air guide surface 11 is most significant. In addition, if the speed of the air conditioner is higher (greater than 1350 rpm), when the airflow velocity passing through the airflow channel 3 is greater, the width of the airflow channel 3 can be positively correlated with the wind speed of the air outlet, and at this time, the width of the airflow channel 3 can be set to be larger (close to 20 mm).

In addition, the rotation axis 13 is equidistant from the upper wall 21 and the lower wall 22 of the air outlet, and the width of the air flow channel 3 is equal when the first air guide surface 11 of the air guide member 1 is in the upper air outlet position (FIG. 4) and the lower air outlet position (FIG. 5). Preferably, the rotation axis 13 is located in the middle of the parallel direction of the straight portion of the air guide member 1.

When the first air guiding surface 11 of the air guide member 1 is toward the extension direction of the air outlet duct (outward), a wind gathering effect is achieved; when it is toward the inside of the air outlet duct (inward), a wind equalization effect is achieved; when it is toward the upper wall of the air outlet (Figure 4), a downward air outlet effect is achieved; when it is toward the lower wall of the air outlet (Figure 5), an upward air outlet effect is achieved.

On the other hand, the present invention provides an air conditioner, including the above-mentioned air outlet structure, as shown in Figures 4 and 5, the motor assembly is used to drive the air guide member 1 to rotate, so that the distance between the first air guide surface 11 and the upper wall 21 is minimized, the wind blown out from the air duct forms a Coanda effect on the first air guide surface 11, and blows downward along the curvature of the first air guide surface 11, and at the same time, the wind blown out from the air duct on the other side blows obliquely downward along the extension direction of the second air guide surface 12, and the winds on both sides of the air guide member 1 converge to form a lower air outlet state; the motor assembly is used to drive the air guide member 1 to rotate, so that the distance between the first air guide surface 11 and the lower wall 22 is minimized, the wind blown out from the air duct forms a Coanda effect on the first air guide surface 11, and blows upward along the curvature of the first air guide surface 11, and at the same time, the wind blown out from the air duct on the other side blows along the extension direction of the second air guide surface 12, and the winds on both sides of the air guide member 1 converge to form an upper air outlet state. As described above, the air guide 1 realizes the switching of wind direction by a single air guide. Compared with the louver type and multiple air guides which easily cause greater aerodynamic noise at the air outlet, the air guide 1 of the present invention has less noise.

Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims (10)

1. An air outlet structure, comprising an air guide member (1) and an air outlet (2), wherein the air guide member (1) comprises a first air guide surface (11) and a second air guide surface (12) arranged opposite to each other along the thickness direction thereof, characterized in that the first air guide surface (11) is a curved surface, the second air guide surface (12) is a plane, the cross section of the air guide member (1) along the thickness direction thereof is an arc portion and a straight portion connected end to end, the first air guide surface (11) intersects with the second air guide surface (12) at both ends of the second air guide surface (12) at an edge; the central angle of the arc portion corresponding to the arc portion is not greater than 1 The angle of the curved surface is 80°, and the Coanda effect can be realized; the air outlet (2) comprises an upper wall (21) and a lower wall (22), and the first air guide surface (11) and the upper wall (21) and the lower wall (22) of the air outlet (2) can form an air flow channel (3); when the first air guide surface (11) faces the upper wall (21), the airflow flowing through the first air guide surface (11) and the second air guide surface (12) converge downward; when the first air guide surface (11) faces the lower wall (22), the airflow flowing through the first air guide surface (11) and the second air guide surface (12) converge upward. 2. The air outlet structure according to claim 1 is characterized in that the distance between the two end points of the straight line portion is h1, the distance between the vertex of the arc portion farthest from the straight line portion and the straight line portion is h2, and the range of h1/h2 is [2,4]. 3. The air outlet structure according to claim 2 is characterized in that the width of the airflow channel (3) is 4-15 mm. 4. The air outlet structure according to claim 1 is characterized in that a rotating shaft (13) is provided at both ends of the air guide member (1) along the length direction, and the rotating shaft (13) is rotatably connected to the side walls (23) at both ends of the air outlet. 5. The air outlet structure according to claim 4 is characterized in that the distance between the rotating shaft (13) and the upper wall (21) and the lower wall (22) of the air outlet is equal, and the widths of the air flow channels (3) formed when the first air guide surface (11) faces the upper wall (21) and the lower wall (22) respectively are equal. 6 . The air outlet structure according to claim 1 or 2 , characterized in that the arc portion comprises a circular arc, an elliptical arc or an irregular curve. 7. The air outlet structure according to claim 1 or 2 is characterized in that the air guide member (1) is integrally formed, or the first air guide surface (11) and the second air guide surface (12) are integrally formed and then welded to the two side plates (14). 8. The air outlet structure according to claim 1 or 2, characterized in that the air guide member (1) is a hollow structure, and a ventilation hole (15) is provided on the air guide member (1). 9. The air outlet structure according to claim 8 is characterized in that the vent hole (15) is arranged in the middle or end of the first air guide surface (11) and close to the second air guide surface (12); and/or is arranged on at least one side plate (14) of the air guide member (1). 10. An air conditioner, characterized by comprising the air outlet structure according to any one of claims 1 to 9.