JP3285023B2 - Ceiling-mounted air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an air outlet of a ceiling-mounted type air conditioner, and more particularly, to a method of adjusting the blowing direction of the conditioned air during a cooling operation or the like so as to be included in the conditioned air. It belongs to the field of antifouling technology for preventing fine particulate dust from adhering to the ceiling surface.

[0002]

2. Description of the Related Art Conventionally, a horizontal blade capable of changing a blowing direction of conditioned air up and down is provided at an air outlet of a ceiling-embedded air conditioner. Then, while the airflow direction of the conditioned air is relatively downward during the heating operation by the horizontal blades, it is relatively upward during the cooling operation so as to be nearly parallel to the ceiling surface (so-called horizontal blowing). In the operating state, the temperature distribution in the room is made uniform to improve the air conditioning efficiency.

However, in the above-mentioned horizontal blowing state, fine particulate dust contained in the blown conditioned air may adhere to the ceiling surface, and the ceiling surface may be partially contaminated. Specifically, when the air conditioner is viewed from the horizontal direction as shown in FIG. 9, the airflow blown out from the outlet (a) in the horizontal blowout state becomes substantially V-shaped when viewed along the flow,
At the central portion in the longitudinal direction of the outlet (a), the initial velocity of air blowing is high, so that the airflow flows in a region away from the ceiling surface (b). In addition, since the particulate dust contained in the blown air has a high inertial force, the dust hardly adheres to the ceiling surface (b).

On the other hand, the air flow spreads laterally or becomes vortex at both longitudinal sides of the air outlet (a), and the initial velocity of the air flow is lower than that at the central portion. It flows along the ceiling surface (b). In addition, the dust contained in the blown air has a low inertia force and easily adheres to the ceiling surface (b), so that the area (D) ( Dust in the air adheres to (see FIG. 2), and the dust easily becomes dirty.

In order to avoid such contamination, Japanese Unexamined Patent Publication No. Hei 3-160266 discloses that horizontal wings are provided with detachable auxiliary fins for shifting the blowing direction to the ceiling side.
It has been proposed to attach and detach the auxiliary fins in accordance with the ease with which ceiling dirt occurs. That is, for example, in an environment where indoor air is very dusty and ceiling dirt is likely to occur, or in places where there is a particularly high demand for dirt prevention, such as hospitals, the auxiliary fins are removed and the horizontal blades face downward while the ceiling dirt is removed. An auxiliary fin is attached in an environment where the occurrence of dust is less likely to occur or in a place where the need for prevention of dirt is low, so that horizontal blowing can be performed.

[0006]

However, even if the auxiliary fins are provided as in the conventional example, the auxiliary fins have to be removed in an environment where ceiling dirt is likely to be generated. , The conditioned air is always blown downward, so that not only does the air conditioning efficiency decrease during the cooling operation in which horizontal blowing should be performed originally, but also the uncomfortable feeling caused by the direct blow of the cool air to the indoor people ( The problem of the so-called draft feeling) also occurs.

[0007] The present invention has been made in view of such a point, and an object of the present invention is to improve the arrangement of an air-conditioning air outlet and the like so as to respond to the operating state of an air conditioner. An object of the present invention is to prevent the ceiling surface from being stained while obtaining an appropriate blowing direction.

[0008]

In order to achieve the above object, according to a first solution of the present invention, an air outlet of a ceiling-embedded type air conditioner is controlled by a guide means so as to blow out conditioned air. The lowermost part of the outlet forming member on the side to be guided is disposed so as to be appropriately separated from the ceiling surface, and
The airflow from the outlet will not be as upward as possible
And if a part of the airflow flows upward,
The bottom surface of the ceiling plate is not stained by dust contained in the air
Of the outlet forming member outside the air outlet
The normal shape was set .

Specifically, in the invention of claim 1, the ceiling surface (7
0), an outlet (16) for blowing conditioned air toward the indoor space is provided, and a guide means (18) capable of guiding the direction of the conditioned air to the outlet (16) is provided. Assuming an embedded ceiling type air conditioner provided, in this device, the lowermost part of the outlet forming member on the side where the blowing direction is guided by the guide means (18) is lowered from the ceiling surface (70). It is arranged so that it is at least 45 mm away ,
The outlet forming member on the side where the blowing direction is guided by (18)
From the bottom to the outer periphery of the air conditioner body (10)
A first inclined surface (14a) which is inclined to approach the ceiling surface,
And a second inclined surface following the first inclined surface (14a)
In addition, the first inclined surface (14a) is inclined with respect to the ceiling surface (70).
The angle is 12 degrees or less, and the ceiling surface of the second inclined surface
The inclination angle with respect to (70) was more than 12 degrees .
As the guide means (18), for example, the air passage on the upstream side leading to the outlet (16) may be curved to guide the direction of the blown conditioned air.

With the above configuration, the conditioned air blown out from the air outlet (16) of the air conditioner (1) during a cooling operation or the like is guided by the guide means (18) to become a jet flow blown into the indoor space. The jet axis is bent toward the ceiling surface (70) by the Coanda effect. However, since the lowermost part of the outlet forming member on the side where the blowing direction is guided by the guide means (18) is separated from the ceiling surface (70) by 45 mm or more, any air having a general blowing speed may be used. For example, even if the air flows at both sides in the longitudinal direction of the air outlet (16) having a relatively low initial air velocity, the air flow does not reach the ceiling surface (70), and the air flow (16) )
Even if a part flows along the first slope (14a), the first slope
Since the peeling occurs at the boundary position between the surface (14a) and the second inclined surface , the temperature gradually falls due to a temperature difference from room air.
With this, even if the air-conditioning air blowing direction is directed upward so as to be nearly parallel to the ceiling surface, the air flow does not flow along the ceiling surface, and therefore, the dirt on the ceiling surface in a so-called horizontal blowing state is reduced. Can be prevented .

[0011] Next, in a second solution of the present invention, in order to make the air flow blown out from the air outlet of the ceiling-embedded air conditioner as low as possible, the air flow on the guided side of the air flow is controlled. The shape of the outlet forming member was determined.

Specifically, according to the second aspect of the present invention, the ceiling surface (7
0), an outlet (16) for blowing conditioned air toward the indoor space is provided, and a guide means (18) capable of guiding the direction of the conditioned air to the outlet (16) is provided. It is assumed that the installed ceiling-mounted air conditioner is provided. And
A first inclined surface which is inclined so as to approach the ceiling surface from the lowermost part of the air outlet forming member on the side where the blowing direction is guided by the guide means (18) toward the outer peripheral side of the air conditioner body (10);
(14a) and a second inclined surface following the first inclined surface (14a), and the inclination angle of the first inclined surface (14a) with respect to the ceiling surface (70) is set to 12 degrees or less, The angle of inclination of the second inclined surface with respect to the ceiling surface (70) was set to exceed 12 degrees.

With this configuration, the conditioned air blown out from the air outlet (16) of the air conditioner (1) during a cooling operation or the like is guided by the guide means (18) to become a jet blown into the indoor space,
Part of the air flow flows along the first inclined surface (14a),
Peeling occurs at the boundary between the first inclined surface (14a) and the second inclined surface. Thereby, the air flow hardly reaches the ceiling surface (70), and therefore, the dirt on the ceiling surface in a so-called horizontal blowing state can be greatly reduced.

[0014] In the present invention of claim 3, in the invention of any one of claims 1 or 2, the distance from the bottom of the outlet forming member to the boundary position of the first inclined surface (14a) and the second inclined plane, 70 mm or more. By doing so, the function and effect of the first or second aspect of the invention can be sufficiently obtained.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the lowermost part of the outlet forming member on the side where the blowing direction is guided by the guide means (18) is attached to the air conditioner main body. It was arranged so as to be separated from the boundary position between (10) and the ceiling surface (70) by 75 mm or more in the horizontal direction.

As a result, a part of the conditioned air blown out from the outlet (16) is bent upward by the Coanda effect and flows along the outlet forming member. Since the lowermost part is sufficiently far from the boundary position with the ceiling surface (70) in the horizontal direction, most of the airflow flowing along the outlet forming member as described above before reaching the ceiling surface (70) The dirt on the ceiling surface (70) can also be significantly reduced .

Next, according to a fifth aspect of the present invention, the first aspect is provided.
The outlet (16) in any one invention of 1-4 were provided with the rectifying member (19) for regulating the flow in the longitudinal direction of the air outlet of the conditioned air (16). With this, the conditioned air blown out from the outlet (16) is rectified so that the flow in the longitudinal direction of the outlet (16) is regulated by the rectifying member (19) and heads in the blowing direction. The initial velocity of the blow-out is also high at both sides of the blow-out port (16) as in the central part, whereby the upward flow of the conditioned air in the horizontal blow-out state can be more effectively suppressed. Incidentally, the rectifying member (19),
What is necessary is just to arrange at the substantially both ends in the longitudinal direction of the outlet (16).

In the invention according to claim 6 , the guide means (18) is a horizontal blade capable of changing the blowing direction of the conditioned air up and down. This allows the flow of the conditioned air from the outlet (16) to be changed up and down by the horizontal blades (18), so that the flow of the blown air is relatively downward during the heating operation, while the cooling operation is performed. In some cases, the air-conditioning efficiency can be increased in each operation state by setting the air-conditioning apparatus to a horizontal blowing state. In particular, during the cooling operation, the above-mentioned effects can be sufficiently obtained if the air flow is made as horizontal as possible by the horizontal blades (18) as long as the flow of the blown air does not flow along the ceiling surface (70). Can be obtained.

According to a seventh aspect of the present invention, a rectifying plate (19) for regulating the flow of the conditioned air in the longitudinal direction of the air outlet (16) is provided on the horizontal blade (18) according to the sixth aspect of the present invention. In this way, the flow of the blown air is effectively regulated by the flow straightening plate (19) on the horizontal blade (18), and the initial speed of the blown air flow is set at the outlet.
Since both sides of (16) are as high as the central part, the upward flow of the conditioned air in the horizontal blowing state can be more effectively suppressed. The rectifying member (19) may be arranged so as to correspond to at least substantially both ends in the longitudinal direction of the air outlet (16) on the horizontal blade (18).

According to an eighth aspect of the present invention, the horizontal blade (18) according to the seventh aspect of the present invention is formed of an elongated plate member which is curved in the width direction, and the rectifying plate (19) is Feather
(18) were arranged at predetermined intervals over the entire surface in the longitudinal direction on the inwardly curved surface. Thus, the flow of the conditioned air can be smoothly changed by the long horizontal blades (18) curved in the width direction, and the blowing direction can be changed.
In addition, by arranging the rectifying plates over the entire curved inner surface in the longitudinal direction, the rectifying plates can rectify the flow of the blown air as a whole.

According to the ninth aspect of the present invention, the initial velocity of the air flow near the center of the air outlet (16) is not less than about 2 m / sec and not more than about 6 m / sec. Thus, it is possible to sufficiently suppress the airflow from flowing upward even in the horizontal blowing state without increasing the blowing noise.

According to the tenth aspect , the running distance of the conditioned air reaching the outlet (16) is set to 30 mm or more. By doing so, the flow of the conditioned air blown out from the outlet (16) is adjusted so as to be generally directed to the blowing direction, so that the speed of the blown air particularly at both sides of the outlet (16) is increased. In addition, even in the horizontal blowing state, the air flow can be suppressed from being directed upward.

According to the eleventh aspect of the present invention, the position where the airflow blown out from the air outlet (16) is finally separated from the air conditioner main body (10) is determined by the air conditioner main body (10) and the ceiling surface (70). ) Was set to be 90 mm or more away from the boundary position. By doing so, the Coanda effect between the flow of the conditioned air blown out from the outlet (16) and the ceiling surface (70) can be reduced, and the upward flow of the airflow can be suppressed even in the horizontal blowing state.

[0024]

Embodiments of the present invention will be described below with reference to the drawings .

-Overall Configuration of Air Conditioner-Fig. 1 is a longitudinal sectional view showing a schematic configuration of an embedded ceiling air conditioner (1) according to the present invention. As shown in the figure, this air conditioner (1) is a casing (10) (air conditioner body).
A fan (20) and a heat exchanger (30) are housed therein, embedded in an installation opening (71) opening in a ceiling plate (70), and installed in a space above the ceiling. Hereinafter, first, the present invention
An air conditioner of a reference embodiment having the same structure as the embodiment
Will be described, and then, regarding the characteristic portions of the present invention.
explain.

The casing (10) is composed of a container-shaped main casing (11) opening downward and a decorative panel (14) covering the bottom opening of the main casing (11), not shown. Is suspended and fixed to an upper beam or the like by a suspension fitting. Specifically, the main body casing (11) includes a top plate (12) formed by cutting out four corners of a square and having an octagonal shape, and a side plate (13) extending downward from an outer edge of the top plate (12), On the other hand, the decorative panel (14) has a substantially square plate shape, is attached to a lower end of the side plate (13), and a peripheral portion is fixed to a ceiling plate (70) via a spacer member (72) described later. Have been.

As shown in FIG. 2, an air inlet (15) is formed substantially in the center of the decorative panel (14) so as to open in a square shape. ) 4
Two air outlets (16) are formed. The air suction port (15) is provided with an air filter (17) for removing suspended matters such as particulate dust contained in the room air over the entire surface thereof, and the air filter (17) Is entirely supported by a lattice-shaped filter cover, and horizontal blades (18) capable of changing the blowing direction of the conditioned air up and down are provided at the air outlet (16). In addition, the decorative panel (14) with the opening of the air outlet (16) forms an outlet forming member as shown in FIG.

More specifically, as shown in FIGS. 3 and 4 in an enlarged manner, the side wall on the outer peripheral side of the panel (right side in the drawing) of the air passage communicating with the air outlet 16 of the decorative panel 14 is substantially formed. A vertical surface (16a) extending vertically downward, and an inclined surface (16b) inclined downward from the lower end of the vertical surface (16a) toward the outer periphery of the panel and connected to the lower surface of the decorative panel (14). Meanwhile, the air outlet
The side wall on the inner peripheral side of the panel (left side in the figure) of the air passage communicating with (16) has a curved surface (1
6c) and a vertical surface (16d) extending substantially vertically downward from the lower end of the curved surface (16c). Then, two opposing wall surfaces having such a shape are formed over the entire length in the longitudinal direction (the direction orthogonal to the paper surface) of the air outlet (16), and an air passage sandwiched between both wall surfaces is It has a function of a runway that changes the direction of the flow of conditioned air toward the outlet (16) while adjusting the flow. In this approach path, the approach distance of the conditioned air reaching the air outlet (16) is about 30 mm or more.

The horizontal blade (18) is a long plate member as shown in FIG. 5, which is slightly curved in the width direction and is attached to the air outlet (16). In the state,
The air outlet 16 is rotatable around a support shaft x along a base edge on the rear side (upstream of the flow of the conditioned air), and is rotated by a motor (not shown). It is designed to be rotated as a moving center. Then, when the conditioned air is blown downward most, as shown in FIG. 4, the rear surface (8b) of the horizontal blade (18) faces the vertical surface (16
In the so-called horizontal blowing state while being directed downward so as to overlap with d), as shown in FIG.
(18) is turned upward so that its front surface (18b) is substantially parallel to the inclined portion (16b) of the panel outer peripheral side wall surface.

The fan (20) is a so-called turbo fan provided at a substantially central position inside the main body casing (11) and having a blade (23) held between a shroud (21) and a hub (22). is there. A drive shaft (26) of a fan motor (25) attached to a top plate (12) of a main body casing (11) is inserted and fixed to a hub (22) of the fan (20). When the fan (20) is rotationally driven by the driving force of (25), the air sucked from below the fan (20) is sent to the radial side. The fan (2
Below the (0), a bell mouth (27) for guiding the air flowing into the casing (10) from the air inlet (15) to the fan (20)
Is provided.

Further, the heat exchanger (30) comprises a number of plate-like fins (31) provided in parallel with each other and a heat transfer tube (32) provided through the fins (31). This is a so-called cross fin heat exchanger. This heat exchanger (30)
Is configured in a rectangular cylindrical shape in plan view so as to surround the periphery of the fan (20), is connected to an outdoor unit via a refrigerant pipe (not shown), and serves as an evaporator during cooling operation and as a heating device. During operation, it functions as an aggregator and regulates the temperature of the air sent from the fan (20). A drain pan (33) for receiving drain water is provided below the heat exchanger (30).

That is, the air filter (17), the bell mouth (27), the fan (20), and the air inlet (15) of the decorative panel (14) are provided in the main casing (11) of the air conditioner (1). An air flow passage (W) is formed through the heat exchanger (30) to the air outlet (16). When the fan (20) is driven during the air conditioning operation, the room air taken into the casing (10) from the air suction port (15) via the air filter (17) is supplied to the bell mouth (27) and the fan ( 20) and heat exchanger (30) in order
(W), heat exchange with the refrigerant in the heat exchanger (30) and temperature control (cooling in the cooling operation, heating in the heating operation), and then the conditioned air The air is blown out from the air outlet (16) into the indoor space to perform air conditioning in the indoor space.

[0033] In addition, the decorative panel of the air conditioner (1) (14)
A spacer member (72) for adjusting the vertical distance between the two is provided between the ceiling panel (70) and the ceiling panel (70). As a result, as shown in FIG. exit
(16) The upper edge, that is, the vertical space between the lowermost part of the outlet forming member on the side where the blowing direction of the conditioned air is guided by the horizontal blades (18) and the lower surface of the ceiling plate (70) h is set to 45 mm or more, and the upper edge of the air outlet (16) and the outer peripheral edge of the decorative panel (14) (the boundary position between the decorative panel (14) and the ceiling panel (70)). interval L is set to more than 90mm.

[0034] In other words, before Symbol position separated from the final decorative panel (14) of the air flow blown from the air outlet (16) is away ceiling board (70) 45 mm or more downward from the lower surface, and The distance L from that position to the boundary position between the decorative panel (14) and the ceiling plate (70) is 90 mm or more, whereby the air is blown out from the air outlet (16) in a so-called horizontal blowing state during the cooling operation. The conditioned air can be prevented from flowing along the lower surface of the ceiling plate (70). That is, when there is a request to blow the conditioned air relatively downward, such as during a heating operation, the horizontal blades (18) are turned substantially vertically downward as shown in FIG. The air is blown out substantially vertically downward along the vertical plane (16a) on the outer peripheral side of the panel of the air outlet (16) and the air outlet (16), as shown by the arrow S in FIG.

On the other hand, when a so-called horizontal blowing state is set during a cooling operation or the like, as shown in FIG.
(18) is turned upward, and the front surface (18) of the horizontal blade (18) is
a) is replaced with the inclined surface (16
Make it almost parallel to b). In this way, the conditioned air is curved from the curved surface (6c) to the front surface (18a) of the horizontal blade (18) along the side wall of the air passage (runway) communicating with the air outlet (16). And the direction of the streamline changes greatly and smoothly, and as shown by an arrow S in FIG.
(16) passing between the inclined surface (16b) on the outer peripheral side of the panel and the horizontal blade (18), from the air outlet (16) to an angle almost parallel to the lower surface of the ceiling plate (70) (for example, the ceiling plate ( 70) Approximately 3 angles with the lower surface
0 ° to 35 °).

At this time, the conditioned air blown out from the air outlet (16) into the indoor space becomes a jet, and the blowout angle of the conditioned air is changed to the ceiling plate.
(70) when nearly parallel to the bottom surface is so that the jet axis is bent upward by the Coanda effect, the air outlet as before Symbol (16) is positioned appropriately apart from the top plate (70) Therefore, if the initial velocity of the air flow near the center of the air outlet (16) is a general value of about 2 to 6 m / sec, for example, the air outlet (16 ) The flow of the conditioned air, including the flow on both sides, is
It does not rise to the lower surface, but eventually falls due to the temperature difference with room air.

That is, conventionally, in a portion of the ceiling-embedded type air conditioner where the air blowing speed is low, the airflow tends to approach the lower surface of the ceiling plate (70) due to the Coanda effect, and the horizontal blades (18) during cooling operation. ), The blowing direction of the conditioned air is relatively directed upward, for example, by about 40 to 45 ° with respect to the lower surface of the ceiling plate (70), and the air flow flows along the lower surface of the ceiling plate (70), and FIG. Although ceiling dirt was generated in the area (D) as shown by the phantom line, according to the air conditioner (1) according to this reference embodiment, the air The direction of air-conditioning air blowing from the air outlet (16) is adjusted by, for example, 30 degrees to the lower surface of the ceiling plate (70) by the horizontal blade (18).
Even when approaching up to ~ 35 °, the airflow is
0) Almost no flow along the lower surface, which can prevent the occurrence of ceiling dirt, which has been a problem in the past.

[0038] Table 1, for four different air conditioner dimensional shape of the air outlet (16) (types 1 to 4), respectively, the air blowing through the spacer member (72) as in this reference embodiment Adjusting the position of the outlet (16) to the ceiling plate (70) while adjusting the position of the ceiling plate (7) without using the spacer member (72)
This shows the result of examining the state of occurrence of ceiling dirt after actually operating for a predetermined time, in comparison with the case where it is attached to (0). According to this experimental result, regardless of the size and shape of the air outlet (16), by using the spacer member (72), the minimum blowing angle at which ceiling dirt does not occur is 5 to 10 °.
It can also be seen that can be reduced.

[0039]

[Table 1] Therefore, the air conditioner (1) of this reference embodiment
According to this, a spacer member (72) is interposed between the decorative panel (14) and the ceiling plate (70), and the air outlet (16) is appropriately spaced from the ceiling plate (70). This makes it possible to make the direction of the air-conditioned air blow closer to the horizontal direction than before, while preventing the ceiling from being stained, especially during cooling operation in which horizontal air-conditioning air blowing is required. Efficiency can be ensured and the sense of inconsistency (draft) of indoor occupants can be eliminated.

In a situation where the requirement for preventing ceiling dirt is low, the same air conditioner (1) can be installed without the spacer member (72).
(1) can be installed so as to enhance the sense of unity with the ceiling to improve the appearance .

FIG. 6 shows a modification of the above-described air conditioner (1) . In this modification, the decorative panel (14) has an air outlet (1).
6) Projecting plate (16e) extending diagonally downward from the upper edge
Is provided. In this case, the lowermost part of the outlet forming member on the side where the direction of blowing the conditioned air is guided by the horizontal blades (18) is not the upper edge of the air outlet (16), but the protruding plate.
(16e). Accordingly, the distance h from the tip end position of the protruding plate (16e) to the lower surface of the ceiling plate (70) is set to 45 mm or more, and the boundary position between the decorative panel (14) and the ceiling plate (70) from the tip end position. if the distance to the above 90 mm, it is possible to obtain the same effect as the previous SL air conditioning system (1).

[0042] Figure 7 is ceiling embedded air conditioner another of (1)
A reference form is shown, which is the same as the above-described air conditioner (1) except for a detailed configuration such as an air outlet (16). Description is omitted. Then, this thing is, the air conditioner (1)
A spacer member (72) is interposed between the decorative panel (14) and the ceiling panel (70), and the upper edge of the air outlet (16) is attached to the ceiling panel (7).
0) In addition to being arranged at a suitable distance from the lower surface, the air flow blown out from the air outlet (16) should not be as upward as possible, and even if a part of the air flow flows upward, its ceiling plate (70) by the dust contained in the air so the lower surface is not dirty, Ru than air outlet (16) to set the size and shape of the outer decorative panel (14) Tei.

More specifically, the air outlet (16) of the decorative panel (14) is located outside of the air outlet (16), that is, on the side where the direction of air-conditioning air blowing is guided by the horizontal blades (18). A substantially planar outer inclined surface (14a) that is inclined from the upper edge toward the outer peripheral side of the air conditioner casing (10) toward the lower surface of the ceiling plate (70) is provided, and the outer inclined surface (14a) is provided. )
Is set to 10 ° or more with respect to the ceiling surface. As a result, the air flow (jet) blown out from the air outlet (16) during the cooling operation or the like is first bent upward by the Coanda effect between the decorative panel (14) and the outer inclined surface (14a). However, by setting the inclined state of the outer inclined surface (14a), the Coanda effect can be reduced, and the upward flow of the conditioned air can be reduced.

The upper edge of the air outlet (16) and the ceiling plate
(70) The vertical distance h between the lower surface and the lower surface is set to 45 mm or more as in the above-described reference embodiment, and the upper edge of the air outlet (16) is spaced from the outer peripheral end of the spacer member (72). It is arranged sufficiently apart in the horizontal direction, in other words, the horizontal distance A between the upper edge of the air outlet (16) and the boundary position of the air conditioner (1) and the ceiling plate (70) is It is set to 75 mm or more. Due to this, a part of the conditioned air blown out from the air outlet (16) flows upward, and thereafter,
Even if it flows along the outer inclined surface (14a) of the decorative panel (14),
Since the upper edge of the air outlet (16) is sufficiently far from the boundary with the ceiling plate (70) in the horizontal direction, the decorative panel (14)
Most of the airflow flowing along the space descends before reaching the lower surface of the ceiling plate (70).

Further, as a characteristic portion of the present invention, an external
The inclination angle of the inclined surface (14a) with respect to the lower surface of the ceiling plate (70) is 12
Degrees and below the outer slope (14a).
A second inclined surface is formed, and the ceiling surface (70) of the second inclined surface is formed.
If the inclination angle exceeds 12 degrees, the air outlet
Part of the conditioned air blown out from (16) is
Flows along 4a) and separates at the boundary position with the second inclined surface
And this greatly reduces the dirt on the ceiling surface.
Can be reduced.

In addition, in this case , the reference
Instead of the horizontal vane (18) of those, it is used horizontal vane (18) having for example rectifying plate as shown in FIG. 8 (19, 19, ...). The horizontal blade (18) is formed of a long plate member slightly curved in the width direction, and has a curved inner surface (18).
a) is the front face, and the outer face (18b) is the back face. Further, shell-like projections (18c, 18c) are integrally provided at both ends in the longitudinal direction of the horizontal blade (18), respectively, and project toward the front side, and the horizontal blade (18c) is provided at the end of each projection (18c). 1
The connecting pin (18) extends outward along the longitudinal direction of (8).
d, 18d) are formed. And the horizontal blade (18)
Is disposed at the air outlet (16) as shown in FIG. 7 and is located on the inner side of the air outlet (16) (upstream of the flow of conditioned air: left side in the figure). One connecting pin (18d, 1
8d) is rotatably connected and supported by the connecting member (14b) on the decorative cover (14) side, whereby the horizontal blade (18) is driven around a support shaft x by the driving of a motor (not shown). It can be turned up and down.

Further, on the front surface (18a) curved inside the horizontal blade (18), the flow of the conditioned air is rectified at predetermined intervals over the entire longitudinal direction of the horizontal blade (18). (19, 19,...: 10 in the illustrated example) are fixedly arranged. Each of the rectifying plates (19) has a horizontal blade (18).
Are arranged across the width direction of the horizontal blade (18) so as to be substantially perpendicular to the front surface (18a) of the horizontal blade, and as shown by an arrow S in the figure,
The conditioned air flowing along the front surface (18a) of the horizontal blade (18)
While flowing between the flow straightening plates (19), the flow is straightened over the entire length of the horizontal blade (18). Like this, the current plate (19,19,…)
Since the air flow rectified by the air flow becomes a two-dimensional flow generally along the vertical plane, the initial velocity of the conditioned air blown out from the air outlet (16) is the same as that of the air outlet (16) on both sides of the air outlet (16). As well as higher.

[0048] Therefore, in the air conditioning apparatus of this (1),
In addition to using the spacer member (72) in the same manner as in the above-described reference embodiment, in addition to the upper edge of the air outlet (16) being appropriately spaced vertically from the lower surface of the ceiling plate (70), The upper panel of the air outlet (16) is disposed sufficiently horizontally apart from the boundary with the ceiling plate (70), and the decorative panel (14) connected to the upper edge of the air outlet (16) The outer inclined surface (14a) is relatively inclined with respect to the horizontal plane so that the airflow blown out from the air outlet (16) can be bent upward in the horizontal air-conditioning air blowing state. In addition, since a part of the airflow flowing upward along the decorative panel (14) can be lowered before reaching the lower surface of the ceiling plate (70), the ceiling surface due to dust contained in the air can be lowered. dirt can the be effectively prevented al.

[0049] In this product, the rectifying plate in the horizontal vane (18) (19, 19, ...) to be provided, since as to rectify the flow of the conditioned air, on either side of the air outlet (16) It almost eliminates the decrease in the flow rate of the blown air, suppresses the upward flow of the air at this portion, and further enhances the above-described effects.
Can be enhanced .

In the air conditioner (1), a spacer member (72) is interposed between the decorative panel (14) and the ceiling plate (70), and the position of the air outlet (16) is set. However, the present invention is not limited to this, and the vertical size of the decorative panel (14) is increased in advance, and the air outlet (16) is attached to the ceiling plate (70) without using the spacer member (72). You may make it arrange | position appropriately spaced from the lower surface.

In the air conditioner (1) , a horizontal blade (18) is disposed at the air outlet (16) to change the flow of the conditioned air up and down. Feather (1
The flow of the conditioned air may be guided only by the curved shape of the air passage leading to the air outlet (16) without providing (8). In this case, the air passage itself constitutes the guiding means.

[0052] Further, the air conditioner in (1) of identifying the vertical distance h between the air outlet (16) upper edge and the ceiling plate (70) lower surface, or in addition to , Air outlet (1
6) The horizontal distance A from the upper edge to the boundary position between the ceiling plate (70) of the air conditioner casing (10) and the outer slope of the decorative panel (14)
Although the inclination angle θ in a) is specified, the invention is not limited to this. That is, for example, by specifying only one of the horizontal distance A and the inclination angle θ, the occurrence of ceiling dirt can be significantly reduced as in the above-described embodiments. Alternatively, by specifying any one set of the vertical distance h and the horizontal distance A, the vertical distance h and the inclination angle θ, or the horizontal distance A and the inclination angle θ, ceiling contamination can be performed in the same manner as in each of the above embodiments. Can be almost prevented .

In addition , the present invention is not limited to a so-called ceiling-mounted four-way blow-type air conditioner (1) having a turbofan and blowing conditioned air in four directions. The present invention can also be applied to a so-called ceiling embedded two-way blow type air conditioner that blows out conditioned air in the direction.

[0054]

As described above, according to the ceiling embedded type air conditioner according to the first aspect of the present invention, the lowermost part of the outlet forming member on the side where the conditioned air is guided from the outlet (16). Is placed at least 45 mm below the ceiling surface (70) .
Outlet forming member outside the air outlet
Is provided with first and second inclined surfaces (14a) having predetermined dimensions and shapes,
The airflow flowing along the first slope (14a) is
When air-conditioning air is blown out from the air outlet (16) of the air conditioner (1) so as to be as parallel to the ceiling as possible, for example, during cooling operation, etc. However, the flow of the conditioned air does not flow along the ceiling surface, thereby preventing the ceiling from being stained in a so-called horizontal blowing state.

[0055] According to the second aspect of the present invention, the blow outlet (16) to the outlet port forming member side to be guided of the conditioned air, first inclined surface relatively gently inclined (14a) relatively rapid In the so-called horizontal blowing state, a part of the airflow blown out from the outlet (16) flows along the first sloped surface (14a) in the so-called horizontal blowing state, and this airflow is The separation is performed at the boundary position with the second inclined surface, whereby the air flow is prevented from reaching the ceiling surface (70), and dirt on the ceiling surface can be greatly reduced.

According to the third aspect of the present invention, the first inclined surface (14)
By making a) a sufficient length along the direction of air flow, the effect of the first or second aspect of the invention can be sufficiently obtained.

According to the fourth aspect of the present invention, the edge of the air outlet (16) is sufficiently separated in the horizontal direction from the boundary position with the ceiling surface (70), so that the airflow flowing along the air outlet forming member Can be lowered before reaching the ceiling surface (70), thereby greatly reducing the dirt on the ceiling surface (70) .

According to the fifth aspect of the present invention, by arranging the rectifying member (19) at the outlet (16), the flow of the conditioned air is adjusted, and the initial velocity of the outlet at both sides of the outlet (16). Of the ceiling can be suppressed, and thereby the ceiling dirt can be more effectively suppressed.

According to the sixth aspect of the present invention, since the horizontal blade (18) capable of changing the blowing direction of the conditioned air up and down is provided,
In the heating operation, the flow of air blown out from the air outlet (16) is directed relatively downward, while in the cooling operation, the air is blown horizontally to increase the air conditioning efficiency in each operation state.

According to the seventh aspect of the present invention, the rectifying plate (19) provided on the horizontal blade (18) can effectively rectify the blown air. According to the eighth aspect of the present invention, the rectifying plate (19) ) Over the entire length of the horizontal blade (18),
The flow of the blown air can be adjusted more effectively and overall.

According to the ninth to eleventh aspects, the effects of the present invention can be sufficiently obtained.

[Brief description of the drawings]

1 is a schematic cross-sectional view from the side of the air conditioner according to the present onset bright.

FIG. 2 is a perspective view from below of an air conditioner embedded in a ceiling.

FIG. 3 is an enlarged view showing a detailed configuration of an air outlet.

FIG. 4 is a diagram corresponding to FIG. 3 when the blowing direction of the conditioned air is downward.

FIG. 5 is a perspective view of a horizontal blade.

FIG. 6 is a diagram corresponding to FIG. 3 according to a modification in which a protruding plate is provided at the upper edge of the air outlet.

FIG. 7 is a diagram corresponding to FIG. 3 according to another embodiment .

FIG. 8 is a diagram corresponding to FIG. 5 according to another embodiment .

FIG. 9 is an explanatory diagram showing a state of a blown airflow of conditioned air from an air outlet when the conventional air conditioner is viewed from the side.

[Explanation of symbols]

 (1) Air conditioner (10) Casing (air conditioner body) (11) Main body casing (14) Decorative panel (panel member) (14a) External inclined surface (15) Air inlet (16) Air outlet (18) ) Horizontal blade (19) Rectifier plate (20) Fan (30) Heat exchanger (70) Ceiling plate (72) Spacer member

Continuation of the front page (72) Inventor Yasuyuki Aisaka 1304 Kanaokacho, Sakai-shi, Osaka Daikin Industries, Ltd. Sakai Works Kanaoka Factory (56) References JP-A-7-167487 (JP, A) JP-A-11- 63546 (JP, A) JP-A-8-94160 (JP, A) JP-A-8-86504 (JP, A) JP-A-57-163523 (JP, U) JP-A-58-60119 (JP, U) 60-96521 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 1/00 F24F 13/06 F24F 1/00 426

Claims (11)

(57) [Claims] An air outlet (16) buried in a ceiling surface (70) for blowing air-conditioned air toward an indoor space is provided, and the air outlet (16) guides a blowing direction of the air-conditioned air. In the ceiling embedded type air conditioner provided with a possible guide means (18), the lowermost part of the outlet forming member on the side where the blowing direction is guided by the guide means (18) is below the ceiling surface (70). 45mm
Is disposed away above, the side of the blow which direction blowout by the guide means (18) is guided
From the bottom of the outlet forming member to the outer periphery of the air conditioner body (10)
A first inclined surface that inclines so as to approach the ceiling surface toward the side
(14a) and a second inclined surface following the first inclined surface (14a) are formed.
The inclination angle of the first inclined surface (14a) with respect to the ceiling surface (70) is
12 degrees or less, with respect to the ceiling surface (70) of the second inclined surface.
The ceiling-mounted air conditioner, wherein the inclination angle exceeds 12 degrees . (2 ) embedded in a ceiling surface (70) for indoor space.
Once the outlet (16) that blows out conditioned air is provided
In both cases, the air outlet (16) can guide the direction of air conditioning air
Ceiling type air conditioner equipped with efficient guide means (18)
In the blower, the blowout direction is guided by the guide means (18).
From the bottom of the outlet forming member to the outer periphery of the air conditioner body (10)
A first inclined surface that inclines so as to approach the ceiling surface toward the side
(14a) and a second inclined surface following the first inclined surface (14a) are formed.
The inclination angle of the first inclined surface (14a) with respect to the ceiling surface (70) is
12 degrees or less, with respect to the ceiling surface (70) of the second inclined surface.
The inclination angle of which exceeds 12 degrees.
Ceiling-mounted air conditioner. 3. The first inclined surface (14a) and the second inclined surface (14a) from the lowermost part of the outlet forming member according to claim 1 or 2.
The distance to the boundary of the slope is 70 mm or more.
Ceiling embedded air conditioning apparatus, characterized in that that. 4. An air outlet according to claim 1, wherein the air outlet direction is guided by the guide means (18).
At the bottom of the forming member, the air conditioner body (10) and the ceiling surface (7
It is away more than 75mm in the horizontal direction from the boundary position between 0)
An air conditioner embedded in a ceiling, characterized in that: 5. The air outlet (16) according to any one of claims 1 to 4 , wherein a flow of air-conditioned air in the longitudinal direction of the air outlet (16) is provided.
A rectifying member (19) for regulating the flow is provided.
Ceiling-mounted air conditioner. 6. The air conditioner according to claim 1, wherein the guide means (18) can change a blowing direction of the conditioned air up and down.
Ceiling-mounted air conditioner, which is a functional horizontal blade
Sum equipment. 7. The air conditioner according to claim 6, wherein the horizontal blades (18) have a flow of air-conditioned air in the longitudinal direction of the air outlet (16).
A rectifying plate (19) is provided to regulate this.
Ceiling-mounted air conditioner. 8. An elongated plate portion according to claim 7, wherein the horizontal blade (18) is curved in the width direction.
The flow straightening plate (19) is formed on a surface curved inside the horizontal blade (18).
Are arranged at predetermined intervals throughout the longitudinal direction
A ceiling-mounted air conditioner, characterized in that: 9. An air outlet according to claim 1, wherein the initial velocity of the air flow near the center of the air outlet is approximately 2
m / sec or more and approximately 6 m / sec or less
Ceiling-mounted air conditioner. 10. The odor of any one of claims 1 to 8.
The approach distance of the conditioned air to the outlet (16) is more than 30mm
Ceiling-mounted air-conditioning equipment characterized by:
Place. 11. The odor of any one of claims 1 to 8.
And finally the air conditioner of the airflow blown out from the outlet (16).
The position where it is separated from the body (10) is the same as the air conditioner body (10).
Be at least 90mm away from the border with the ceiling surface (70).
A ceiling-mounted air conditioner characterized by the following.