JP2003232561A - Air conditioner outlet - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an air outlet of an air conditioner for preventing dew condensation on a louver (movable direction control plate). A direction control plate (3a) facing an inner wall of an air outlet through a gap, rotatably attached to the air outlet, and controlling an air blowing direction, and a direction in which the direction control plate is flat. A projection 2 protruding toward the direction control plate along the direction control plate, at a portion of the inner wall overlapping the direction control plate when viewed from the side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner outlet, and more particularly to an air conditioner outlet having a structure for preventing dew condensation.

[0002]

2. Description of the Related Art The air outlet of an air conditioner is cooled by the blowing of cool air during cooling, and when hot air comes into contact with it, dew condensation easily occurs. If dew condensation occurs, it causes mold and the like, which impairs the appearance and is not preferable in terms of hygiene. In order to prevent this dew condensation, many proposals have been made in the past.

For example, the heat insulating material is arranged so as to project from the inner peripheral edge of the outlet to the outer peripheral edge side, and the heat insulating material is insulated from the outer peripheral edge by the heat insulating material while being insulated from the blow peripheral edge portion. A proposal has been made for a dew condensation preventing structure having a supporting frame (Japanese Patent Laid-Open No. 11-63640). According to this structure, the vortex generated by the cool air blown out from the air outlet does not come into contact with the frame. Further, since the heat insulating material is interposed between the blowout peripheral portion and the frame,
The frame body is not cooled by the blow-out peripheral edge portion cooled by the cool air. Therefore, the temperature of the frame does not decrease,
Condensation does not occur even if the warm air flowing back near the outlet contacts the frame.

Further, it has a blowout opening arranged at the peripheral portion of the blowout opening and a cover made of a heat insulating material for covering the blowout opening, and a closed space is provided between the blowout opening and the cover. A proposal has been made for a dew condensation prevention structure having enhanced heat insulation (registered utility model publication No. 3039360). According to this structure, the heat insulating property is enhanced, and the cooling by the cool air is less likely to reach the cover in contact with the warm air, so that the dew condensation is less likely to occur.

[0005]

If the flow of cold air is a straight flow parallel to the inner wall of the grill, it is considered that dew condensation is unlikely to occur due to the above dew condensation prevention structure. However, when a member such as a direction control plate (louver) that forcibly changes the air flow direction is arranged in a direction that intersects the inner wall surface of the grill, the above-mentioned dew condensation prevention structure prevents dew condensation on the direction control plate, etc. It has not been confirmed that it will be done. Further, when the direction control plate or the like is arranged, warm air may be entrained in the cold airflow in accordance with the flow of the cool air, and depending on the angle of the direction control plate, a mixed region of the warm air and the cool air may occur in the peripheral portion of the outlet.

FIG. 8 is a sectional view showing a conventional air outlet. Two peripheral portions 104a and 104b of the air outlet facing each other
Between the three direction control plates 103a, 103b, 103
c is provided. The cold air is forcibly turned in a direction intersecting the inner wall surface of the grill according to the angle of the direction control plate, and is blown out. In FIG. 8, the direction control plate 103a that faces the right peripheral portion 104a of the outlet.
Is likely to cause dew condensation on the direction control plate by drawing in warm air from the outside. Even if the heat insulating material is arranged at the peripheral portion of the blowout port, dew condensation occurs not only on the direction control plate but also at the inner corner of the peripheral portion of the blowout port.

It is an object of the present invention to provide a blowout port of an air conditioner in which a directional control plate (louver) is arranged and condensation can be prevented.

[0008]

The air outlet of the air conditioner of the present invention faces the inner wall of the air outlet via a gap and is rotatably attached to the air outlet to control the air blowing direction. In the arrangement in which the direction control plate and the direction control plate are flat, the inner wall portion that overlaps with the direction control plate when viewed from the side of the air outlet faces the direction control plate along the direction control plate. And a protruding portion (claim 1).

In general, it is possible to suppress the entrainment of warm air to the maximum by flowing the cold air stream as rectification at the air outlet without disturbing it. For this reason, it is important to flow a rectified cold air stream that is as turbulent as possible. With the above configuration, in at least the vertically arranged direction control plate, the cold air flow is caused to flow along the direction control plate without being disturbed, and moreover, the ordered cool air flow is directed toward the center side from the inner wall surface of the air outlet by the convex portion. Can be kept away. For this reason, since the cold airflow is rectified, the amount of warm air originally involved is small, and even if warm air is involved, the position where cold air and warm air are mixed is moved away from the outlet member toward the center side.

Therefore, since the direction control plate is covered only by the cold air flow, no dew condensation occurs, and the mixed portion of the cool air and the warm air is located on the center side of the air outlet separated from the air outlet member. No condensation on the outlet member.

Even if the directional control plate is rotated from the vertical direction, the rectifying cold air flow has a direction perpendicular to the shortest straight line connecting the tip of the convex portion and the directional control plate to the directional control plate. It can be obtained if it follows the direction of orientation. In this case, when there are two or more directional control plates, the directional control plates located at at least one end have an angle that spreads downstream with the inner wall of the air outlet, and a convex surface facing them. The above relationship may be established with the department. Because, in the direction control plate having an angle that spreads to the downstream side with the inner wall of the outlet, it is easy to cause dew condensation by entraining warm air, so if only one of the direction control plates can rectify the cool air, This is because dew condensation does not occur on the control plate.

The "direction of the direction control plate is flat" means an angular arrangement in which the plate surface of the direction control plate is not visible and only the end is visible when viewed along the direction from the back of the outlet to the outside. , The angular arrangement with the lowest resistance to air flow.

In the air outlet of the air conditioner of the present invention, the tip of the convex portion is within the use angle range of the orientation of the directional control plate and the upper orthogonal surface which is erected at the upstream end of the directional control plate. , And can be located in a region sandwiched by a lower orthogonal plane that is erected at the downstream end of the direction control plate (claim 2).

As described above, when the tip portion of the convex portion is located in the region between the upper orthogonal surface and the lower orthogonal surface, the direction orthogonal to the straight line of the shortest distance between the tip portion and the direction control plate is , Becomes parallel to the direction of the direction control plate. In this case, the entire tip portion of the convex portion does not need to be located in the area between the upper orthogonal surface and the lower orthogonal surface, and only the tip portion that minimizes the distance from the direction control plate is included in this area. Just do it.

Since the direction orthogonal to the straight line of the shortest distance of the gap is parallel to the direction of the direction control plate, the cold airflow flows along the direction control plate. This condition is satisfied within the use angle range of the direction control plate. Therefore, the directional control plate can be covered with the rectifying cold airflow, and the mixed warm air does not come into contact with the directional control plate to cause dew condensation. Further, since the rectified cold airflow flows in a position away from the air outlet member toward the center side, a mixed region of cold air and warm air occurs at a position away from the air outlet member toward the center side. For this reason, dew condensation does not occur on the outlet member.

In order to satisfy the above relationship, the above-mentioned convex portion has a relative positional relationship with the direction control plate on the inner wall of the outlet,
And the height protruding to the side of the direction control plate.

When there are two or more directional control plates, the directional control plates located at at least one end have an angle that spreads downstream with the inner wall of the outlet, and the facing directional control plates. It suffices if the above relationship is established between the convex portion and the convex portion. Because, in the direction control plate having an angle that spreads to the downstream side with the inner wall of the outlet, it is easy to cause dew condensation by entraining warm air, so if only one of the direction control plates can rectify the cool air, This is because dew condensation does not occur on the control plate. Of course, it goes without saying that the direction control plates at both ends may meet the above requirements.

The air outlet of the air conditioner of the present invention seen from another side faces the inner wall of the air outlet through a gap and is rotatably attached to the air outlet so as to control the air blowing direction. The control plate and an inner wall portion are provided with a protrusion protruding toward the direction control plate side along the direction control plate. The convex portion is formed such that the direction orthogonal to the straight line representing the shortest distance between the tip of the convex portion and the direction control plate is along the direction of the direction control plate (claim 3). .

By satisfying the condition of this constitution, the cold airflow flows along the direction control plate. For this reason, the direction control plate is covered with the rectifying cold air flow, the amount of warm air to be entrapped is reduced, and the mixed region of cold air and warm air is moved from the outlet member to the center side. Since the amount of warm air involved is small, the mixing area itself becomes small.

In the air outlet of the air conditioner of the present invention, the tip of the air outlet can be tapered so as to widen the opening of the air outlet to the outside (claim 4).

With this configuration, the front surface of the tip end portion of the blowout port recedes from the center side to the outside, and the degree to which the cool airflow cools the tip end portion of the blowout port is further suppressed. Therefore, it is possible to more reliably suppress the occurrence of dew condensation at the tip of the outlet.

In the air outlet of the air conditioner of the present invention, the surface shape of the upstream end portion of the direction control plate can be a curved shape which is convex toward the upstream side in its cross section (claim 5).

As described above, by making the surface shape of the upstream end portion of the direction control plate into a curved shape convex to the upstream side, it is possible to suppress the occurrence of peeling at the upstream end portion of the direction control plate. it can. Further, since the direction orthogonal to the straight line that represents the shortest distance between the tip of the convex portion and the direction control plate is configured to be along the direction of the direction control plate, the cold airflow for rectification is controlled by the direction control plate. It is easy to form around the direction control plate from the upstream side to the downstream side. Therefore, peeling can be suppressed at the upstream end of the direction control plate, and the cool airflow can be made to follow the direction control plate. As a result, it is possible to obtain the effect of reducing the amount of warm air entrained to prevent dew condensation, improving the wind direction variable performance, and reducing the pressure loss at the air outlet.

In the air outlet of the air conditioner of the present invention, the wall of the air outlet may be made of a resin frame body and a heat insulating material covering the frame body (claim 6).

With this configuration, it is possible to suppress the cooling of the blowout port member due to the heat transfer by the cool air, and to further reliably prevent the dew condensation on the blowout port member.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) In Embodiment 1 of the present invention, an appropriate range such as height and shape of a convex portion is simulated by a computer using a fluid dynamics model, and the air conditioner of the present invention is The contour was examined.

(1) Operation of convex portion FIG. 1 is a sectional view showing a model of the air outlet 10 of the air conditioner of the present invention. On the inner wall of the outlet member 1, the protrusion 2
Is provided. This convex portion extends in the direction perpendicular to the paper surface like a ridge (ridge) or a ridge (ridge). That is, it is provided in a strip shape along the inner wall of the outlet member and long in the direction intersecting the outlet direction. The tip of the convex portion is trapezoidal and has corners 11, 12, 13, and 14. Three direction control plates 3 are provided between the inner walls of the outlet member.
a, 3b, 3c are provided to change the direction of the cold air flow from vertically downward to leftward downward. Of the three direction control plates, the direction control plate 3a at the right end is a direction control plate having an angle that spreads downward with the inner wall. The upstream end of each direction control plate is labeled F, and the downstream end is labeled B.

In FIG. 1, an upper orthogonal line (actually an orthogonal plane) 31 which is erected on the direction control plate at the end F of the direction control plate 3a.
And a lower orthogonal line (orthogonal plane) 32 standing on the direction control plate at the end B of the direction control plate 3a, and an upper orthogonal line (orthogonal plane) orthogonal to the direction control plate at the end F of the direction control plate 3c.
33 and a lower orthogonal line (orthogonal plane) 34 orthogonal to the direction control plate at the end B of the direction control plate 3c.
These orthogonal lines are planes in three dimensions, but since they are explanations in cross section, they will be described as straight lines hereinafter.

The tip of the convex portion 2 provided on the inner wall facing the direction control plate 3a is positioned between the two straight lines 31 and 32 so as to form the corners 11 and 12. . Therefore, the straight line L1 between the corner 11 and the direction control plate 3a becomes the shortest distance between the convex portion and the direction control plate. Further, the direction D1 orthogonal to the straight line L1 is parallel to the direction in which the direction control plate 3a faces. Due to such a positional relationship, a rectifying cold airflow flows at least around the direction control plate 3a.

In FIG. 1, a white arrow indicates a cold air flow, a line arrow indicates a warm air flow, and its magnitude represents a rough flow velocity. In addition, a straight line L representing the shortest distance
Arrows with directions D1 and D2 orthogonal to 1 and L2 are indicated by hatched arrows.

The above relationship is not strictly established between the direction control plate 3c and the convex portion facing it. The shortest distance L2 between the direction control plate 3c and the convex portion 2 is determined by the direction control plate 3
It is realized between the downstream end B of c and the corner 14 of the protrusion. The direction D2 orthogonal to the straight line L2 is slightly different from the direction of the direction control plate 3c. Therefore, turbulence occurs in this part, but since the cold air flow is originally pushed out, the amount of warm air involved is very small compared to the past,
Condensation does not occur on the direction control plate or on any part of the outlet member.

On the side of the direction control plate 3a, since rectification with less turbulence flows along the direction control plate, even if warm air is involved, it is very small. Therefore, the mixed region M of cold air and warm air is very small. Becomes Further, the position is also a position separated from the air outlet member toward the center side. Therefore, there is no risk of dew condensation on the direction control plate or the outlet member.

FIG. 2 shows the case where the direction control plates are aligned in the flat direction. When the outlet of the air conditioner is provided on the ceiling, the flat direction blows out conditioned air from the ceiling in the vertical direction. Also in this case, a rectifying cold airflow is generated around the direction control plate, and the mixed region M of the cold air and the warm air is small and is formed at a position away from the outlet member 1. Therefore, even at the angular position of the direction control plate, dew condensation is prevented from occurring on the direction control plate and the outlet member. In FIG. 2, the arrangement of the direction control plates is line-symmetrical, but the air flow is not always line-symmetrical and constantly fluctuates. The vortex W is generated or disappears. In such a fluctuating air flow, the cold air flow is always away from the inner wall because of the protrusions,
No condensation will occur.

FIG. 3 is a sectional view showing a conventional air outlet for comparison. No convex portion is provided at this outlet. Therefore, the shortest distance L between the direction control plate and the inner wall
The directions D1 and D2 orthogonal to 1 and L2 are not parallel to the direction of the direction control plate in any direction control plate. Therefore, in the direction control plate 3a, the cold airflow is disturbed, and a plurality of vortices W are generated on the downstream side of the direction control plate 3a. Further, the mixed region M of the cool air and the warm air also becomes large and is formed at a position close to the air outlet member. For this reason, the warm air reaches the direction control plate via the vortex W and causes dew condensation on the lower surface of the direction control plate. Further, since the mixing region M is also large and is close to the outlet member, dew condensation is likely to occur on the surface of the outlet member.

(2) Shape of Convex Portion FIG. 4 is a sectional view showing an outlet having the same structure as the outlet member of FIG. 1 except the sectional shape of the convex portion. In order to clarify the difference from the air outlet shown in FIG. 1, the cross-sectional shapes of the convex portions provided at the air outlet of FIG. 1 are indicated by E1 and E2. The convex portion in FIG. 4 is a convex portion having a rectangular cross section, but the convex portion in FIG. 1 is different in that it rises with a gentle gradient on the upstream side. However, the corners of the trapezoid are the same.
Therefore, the configurations of the shortest distances L1 and L2 are the same for the air outlet of FIG. 4 and the air outlet of FIG.

Therefore, also in FIG. 4, almost the same distribution as that of the cold air flow and the warm air flow shown in FIG. 1 can be obtained, and if the tip portion that defines the shortest distance is also the same, the root portion of the convex portion etc. It turns out that it doesn't affect the flow.

(3) Height of convex portion In FIG. 5, since the height of the convex portion is insufficient, the corners 11 and 12 of the tip trapezoidal portion of the convex portion are orthogonal lines 31 and orthogonal lines to the direction control plate 3a. It is a figure which shows the case where it is not located between 32 and protruded outside. According to this FIG. 5, the orthogonal line of the shortest distance L1 is not parallel to the direction of the direction control plate 3a, and therefore,
Turbulence occurs in the cold air flow.

As a result, a separation area S and a vortex W associated therewith are generated on the downstream side of the direction control plate 3a. The cold airflow does not follow the direction control plate 3a but flows along the inner wall. For this reason, the amount of warm air to be entrained increases, the mixed region of cold air and warm air increases, and approaches the inner wall. In particular, it approaches the corner 12 at the tip of the convex portion. Therefore, dew condensation is likely to occur on the inner wall portion. Further, the trapped warm air reaches the downstream end portion of the direction control plate through the vortex W and is likely to be condensed on the downstream end portion.

Therefore, at the angular position where the direction control plate is used, the tip of the convex portion that determines the shortest distance is between two orthogonal lines that stand at the upper and lower ends of the direction control plate located at that angle. Need to be located. However, when the inclination of the direction control plate is closer to the vertical arrangement, a rectifying cold air flow can be obtained around the direction control plate even at the height of the convex portion in FIG. Condensation can be prevented even with the spout member.

(Second Embodiment) FIG. 6 is a sectional view showing an outlet of an air conditioner according to a second embodiment of the present invention. The air outlet of this air conditioner is attached to an air outlet chamber installed on the back of the ceiling, opens on the ceiling surface, and blows conditioned air into the room from the ceiling. In the present embodiment, the rectification conditions are satisfied in both direction control plates 3a and 3c. That is, in the direction control plate 3a, the straight line L1 that determines the shortest distance is located between the orthogonal line 31 standing on the upper end F and the orthogonal line 32 standing on the lower end B. Further, in the direction control plate 3a, a straight line L2 that determines the shortest distance is located between the orthogonal line 33 standing on the upper end F and the orthogonal line 34 standing on the lower end B. Therefore, the cold airflow flows as turbulent straightening along the direction control plate at both ends.

Such an effect is obtained by the direction control plates 3a, 3
Even when b and 3c have a flat angular arrangement, they can be secured as described in the description of FIG. Since the air outlet is provided on the ceiling surface, the flat direction is along the vertical direction. The conditioned air forms a rectifier around the direction control plate and is blown out vertically. For this reason, rectification is formed in the direction control plates 3a and 3c at both ends, and the mixed region of cold air (conditioned air) and warm air is both separated from the inner wall. Therefore, dew condensation is prevented even with a flat angle arrangement.

As a result, the area where the cool air and the warm air are mixed becomes small and is separated from the air outlet member toward the center. Therefore, it is possible to prevent the occurrence of dew condensation on the direction control plate 3a and the air outlet members on both sides.

The outlet member is a resin frame body 15,
The heat insulating material 16 that covers the inner surface side and the heat insulating material 1 that covers the outer surface side
7 and 7. Therefore, it is possible to prevent the cooling due to the upper cool air from being conducted to the inner and outer wall surfaces. As a result, it is possible to prevent the occurrence of dew condensation on the inner and outer wall surfaces.

Further, the lower end surface of the frame body 15 may be subjected to flocking treatment. By this flocking treatment, it is possible to prevent dripping even if dew condensation occurs.

FIG. 7 shows the mounting structure of the above-mentioned direction control plate, and is a schematic sectional view at the end of the air outlet. The end control shaft 19 is supported by the end support plate 19 and the direction control plate is freely rotated. The direction control plate set can be attached by being engaged with the inside of the air outlet member by the metal spring 21. The mounting structure of the direction control plate is a structure when the air outlet of the air conditioner is provided on the ceiling as described above. The air outlet may be provided in a portion other than the ceiling, such as a wall. Also when the outlet is provided on the wall, the attachment structure of the air conditioner is configured by deforming the mounting structure of the direction control plate, for example, by deforming a metal spring into an engaging member or the like. be able to.

Although the embodiments of the present invention have been described above, the embodiments of the present invention disclosed above are merely examples, and the scope of the present invention is not limited to these embodiments. Not limited. The scope of the present invention is shown by the description of the claims, and includes the meaning equivalent to the description of the claims and all modifications within the scope.

[0048]

EFFECTS OF THE INVENTION By using the air outlet of the air conditioner of the present invention and providing a convex portion on the inner wall of the air outlet, the louver (movable direction control plate) is arranged and the direction of the undisturbed cold airflow is controlled. It is possible to form around the plate and move the cool airflow toward the center side away from the air outlet member. Therefore, it is possible to reduce the mixed region of the cool air and the warm air and to move the mixed region away from the inner wall toward the center side. As a result, it is possible to prevent dew condensation from occurring not only on the direction control plate but also on the air outlet member.

[Brief description of drawings]

FIG. 1 is a diagram showing a result of simulating an airflow at an outlet of an air conditioner of the present invention in a first embodiment of the present invention.

FIG. 2 is a diagram showing a simulation result of an air flow when a direction control plate is arranged vertically at the outlet of the air conditioner of FIG.

FIG. 3 is a diagram showing a result of simulating an airflow at an outlet of a conventional air conditioner for comparison.

FIG. 4 is a diagram showing a result of simulating an airflow at an outlet of another air conditioner according to the first embodiment of the present invention.

[Fig. 5] Fig. 5 is a diagram showing a result of simulating an airflow at an outlet of another air conditioner according to the first embodiment of the present invention.

FIG. 6 is a diagram showing an air outlet of an air conditioner according to Embodiment 2 of the present invention.

FIG. 7 is a view showing a mounting mechanism of an outlet of the air conditioner of FIG.

FIG. 8 is a view showing an outlet of a conventional air conditioner.

[Explanation of symbols]

1 blow-out member, 2 convex parts, 3a, 3b, 3c direction control plate, 5 taper part of blow-out end, 11, 12, 13, 1
4 tip corners of convex section, 15 resin frame,
16, 17 Insulation material, 18 Directional control plate support shaft, 19
Direction control plate support plate, 21 metal spring, 25 duct, 3
1, 32, 33, 34 Orthogonal planes (orthogonal lines) erected on the direction control plate, L1 and L2 shortest distance lines, D1 and D2 orthogonal directions with respect to the shortest line, M mixed portion of cold air and warm air, S separation area W Vortex, F direction control plate upper end, B direction control plate lower end.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fumonori Kajino             1-7-4 Higashi-Noda-cho, Miyakojima-ku, Osaka             -K Equipment Co., Ltd. (72) Inventor Taku Hirakawa             1304 Kanaoka-cho, Sakai City, Osaka Prefecture Daikin Industries             Sakai Plant Kanaoka Factory F-term (reference) 3L050 AA03 BD03                 3L080 BE04                 3L081 AA02 AA09 AB01 AB03 FA04

Claims (6)

[Claims] 1. A direction control plate (3a) that faces the inner wall of the air outlet via a gap and is rotatably attached to the air outlet and controls the air blowing direction. In a flat arrangement, a convex portion (2) protruding toward the side of the direction control plate along the direction control plate at a portion of the inner wall that overlaps the direction control plate when viewed from the side of the air outlet. An air conditioner outlet. 2. The tip end portion (11) of the convex portion within the use angle range of the orientation of the direction control plate has an upper orthogonal surface (31) which is erected at an upstream end portion (F) of the direction control plate. )
The air outlet of the air conditioner according to claim 1, wherein the air conditioner is located in a region sandwiched by a lower orthogonal surface (32) standing on a downstream end (B) of the direction control plate. 3. A direction control plate (3a), which faces the inner wall of the air outlet via a gap, is rotatably attached to the air outlet, and controls the air blowing direction, and a direction control plate (3a) on the inner wall. A protrusion (2) protruding toward the direction control plate side is provided along the direction control plate, and the protrusion has a shortest distance between the tip of the protrusion and the direction control plate. Direction (D1) orthogonal to the straight line (L1)
The air outlet of the air conditioner is formed so as to follow the direction of the direction control plate (3a). 4. The tip (5) of the outlet is tapered so as to widen the opening of the outlet to the outside.
The air outlet of the air conditioner according to claim 1. 5. The air conditioner according to claim 1, wherein the surface shape of the end portion (F) on the upstream side of the direction control plate has a curved shape that is convex toward the upstream side in its cross section. Outlet. 6. The wall of the air outlet is a resin frame (1
5) and the heat insulating material (16, 17) which covers the frame body, The air outlet of the air conditioner in any one of Claims 1-5 comprised.