JPH10160238A - Flush type air-conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dew formation by controlling a wind direction control plate to blow out the conditioned air horizontally into a room along the outer wall and separating the conditioned air blown into the room from the indoor air. SOLUTION: Outer wall face is defined by first and second tangents 15, 16 on the opposite sides of arc 14 and a step part 17 and the second tangent 16 is substantially aligned with the horizontal blow-out direction C01. Wind direction control plates 10a, 10b are located in a wing passage at the time of horizontal blow-out and a tangent C02 is aligned with the C01 on the leeward side. The air flowing along outer walls 14, 15 is combined with an air flow deflected by the wind direction control plates 10a, 10b and blown into a room in the direction of the second tangent 16 from the step part 17. The step part 17 separated a cold air flow from the indoor air flow at the time of cooling. According to the arrangement, dew formation can be prevented and a comfortable indoor environment can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner embedded in a ceiling, and more particularly to a shape of an outlet and a shape and operation of a wind direction control plate.

[0002]

2. Description of the Related Art FIGS.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of an outlet of a conventional ceiling cassette type air conditioner disclosed in JP-A-92266, a flow chart of the horizontal outlet, and a flow chart of the lower outlet. In the figure, the main body is embedded in the ceiling and installed so that only the decorative panel 2 is exposed indoors. Then, the room air sucked from the suction port 4 passes through a heat exchanger (not shown) and is heat-exchanged, and is blown out from the blowout port 3 through a blowout duct 7 from a fan (not shown).

[0003] As shown in FIG.
A recess 21 is provided on the inner wall 19 near the opening surface. The outlet 3 protrudes below the recess 21. Recess 2
1 has a slope 22 gradually inclined toward the center of the duct 7 toward the opening surface.

The outer wall 2 facing the recess 21 in the duct
At 0, a wind direction control plate 10 for airflow control is rotatably supported.

[0005] For example, when the blown airflow advances in the horizontal direction, such as during cooling, the wind direction control plate 10 is oriented parallel to the slope 22 as shown in FIG. In this state, the wind direction control plate 10 is positioned such that its lower end is in contact with the outer wall 20. Such a wind direction control plate 10
With this configuration, of the blown airflow, the airflow flowing between the wind direction control plate 10 and the outer wall 20 is suppressed, and all the airflow flows on the inner wall 19 side of the wind direction control plate 10. At this time, the inner wall 19
Has a recess 21 so that an air flow path is secured. The recess 21 has a slope 22 extending to the opening surface,
The airflow flows along this. Further, the airflow that has passed along the slope 22 becomes a blown airflow along the ceiling surface as shown by an arrow H in FIG. The blown airflow along the ceiling surface does not cause turbulence of the room air, and therefore does not attract hot and humid or dirty room air near the decorative panel 2. For this reason, it is possible to prevent dew condensation from being generated at the end of the decorative panel 2 and the like, and to prevent dirty indoor air from being attracted to the ceiling material and the like and turbulence to be generated, thereby making the ceiling material and the like dirty. .

When a blown air flow is generated in a downward direction as in heating, as shown in FIG.
0 is the downward direction. Thereby, the wind direction control plate 10 and
The airflow passing between the outer wall 20 advances downward, and the airflow flowing on the inner wall 19 side of the wind direction control plate 10 advances along the slope 22. The two airflows merge, and the blown airflow flows in the direction indicated by arrow I, and becomes a blown airflow substantially downward from the left. Therefore, a short circuit to the suction port 4 can be prevented, and the blowout airflow can reach the floor surface.

[0007]

Since the conventional ceiling cassette type air conditioner is configured as described above, the wind direction control plate 10 is arranged so as to close the air path during horizontal blowing. The blowout pressure loss increases, leading to a significant decrease in air volume or an increase in noise.

In the conventional method, since air is blown along the ceiling during cooling, the space above the ceiling is cooled by heat conduction.
Dew may form, causing mold to form. Therefore, it is necessary to prevent airflow from adhering to the ceiling surface, and in the conventional method, the angle θ of the slope 23 must be 45 ° or more. In this case, the blowing air current is 45 degrees below the horizontal plane.
It is unpleasant because it blows out to about °, especially during cooling, because it gives the user a sense of draft.

When the angle .theta. Of the slope 23 is set as described above, the blown airflow forms a vortex in the vicinity of the slope 23 due to the rapid expansion at the slope 23 during cooling down-blowing, and the indoor air is entrained and reaches the slope 23. Dew forms. That is, in this method, since the lower blowing cannot be used for cooling, it is impossible to rapidly cool the room at the time of startup, for example.

[0010] In addition, the air passage at the time of downward blowing is formed by the concave portion 21.
The shape is rapidly expanding and contracting, resulting in a large pressure loss and a large deterioration in air volume or noise.

[0011]

According to the first aspect of the present invention, there is provided an embedded air conditioner, wherein a flow path is formed by an indoor unit main body, an inner wall and an outer wall, and conditioned air conditioned by the harmony means of the main body. An outlet that blows out into the room, a wind direction control plate that is rotatably provided at the outlet and controls the direction in which the conditioned air is blown into the room, and a leeward side of an outer wall of the outlet, and the conditioned air is provided on the outer wall of the room. For blowing in the horizontal blowing direction controlled by the wind direction control plate along the first
And second means for separating the conditioned air and indoor air blown into the room by the first means.

According to a second aspect of the present invention, there is provided the embedded air conditioner according to the first aspect, provided between the first means and the second means. It is provided with a third means for adhering the separated conditioned air to the outer wall.

According to a third aspect of the present invention, there is provided an embedded type air conditioner, wherein an indoor unit main body, a flow passage formed by an inner wall and an outer wall, and an outlet for blowing conditioned air conditioned by the harmony means of the main body into the room. A wind direction control plate that is rotatably provided at the outlet and controls the direction in which the conditioned air is blown into the room, and is provided on the leeward side of the inner wall of the outlet,
Fourth means for blowing the conditioned air into the room in the direction of the downward blowing controlled by the wind direction control plate.

According to a fourth aspect of the present invention, in the air conditioner of the first aspect, at least one of the wind direction control plates is located in the air path of the outlet. .

According to a fifth aspect of the present invention, there is provided the air conditioner of the first aspect, wherein the wind direction control plate is located in the air path of the outlet at the time of horizontal blowing, and one circular arc is formed. It is composed of shapes.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an indoor unit of a ceiling-embedded air conditioner according to Embodiment 1 of the present invention. Except for special cases, the main body 1 is embedded in the ceiling and installed so that only the decorative panel 2 is exposed to the room. Then, the room air sucked from the suction port 4 is cooled or heated and is blown into the room from the blowing port 3. Here, the number of outlets is one, but the present invention can be applied to a case where there are a plurality of outlets as long as it is an indoor unit of an embedded type air conditioner.

FIG. 2 is a cross-sectional view showing a configuration inside the indoor unit main body of the ceiling embedded type air conditioner according to Embodiment 1 of the present invention. The room air sucked from the suction port 4 passes through the heat exchanger 6 and exchanges heat, and is blown out from the blowout duct 3 through the blowout duct 7 from the fan 5.

Since the present invention relates to the outlet, the fan 5, the heat exchanger 6, and the arrangement thereof need not always be in this form.

FIG. 3 is an enlarged sectional view of the outlet of FIG. As shown in the figure, the leeward end 12 of the outer wall and the leeward end 13 of the inner wall are often located on the horizontal line or the leeward end 12 of the outer wall is maximum in view of a design that makes the panel look thin. But it is located 10 ° above. Numeral 8 denotes a ceiling, and inside the wind path, arc-shaped wind direction control plates 10a, 10b which are rotated by a rotating shaft 11 and control a vertical wind direction.
There is. Although an example of two wind direction control plates is shown here, one wind direction control plate may be used. Reference numeral 9 denotes a left and right wind direction control plate for controlling the wind direction in the left and right direction. The left and right wind direction control plates are pivotally supported in a plurality of sheets and move in conjunction with each other. The presence or absence of the left and right wind direction control plates does not matter.

As shown in FIG. 4, the outer wall surface is formed by a first tangent line 15 sandwiching the arc 14 as the first means, a second tangent line 16 as the third means, and a step 17 as the second means. The direction of the second tangent line 16 is the horizontal blowing direction C01.
Is almost the same as Horizontal blowing direction 35 ° from horizontal
If it is downward, the direction of the second tangent line 16 is 30 degrees from the horizontal.
It should be set from 35 ° to 35 °. The position of the wind direction control plates 10a and 10b at the time of horizontal blowing is at least one.
It is desirable that a plurality of wind direction control plates be disposed in the wind path, and that the tangent C02 on the leeward side be in the same direction as C01. The detailed shape of the step 17 will be described later.

Next, the operation will be described. FIG. 5 shows a blowout flow at the time of horizontal blowout by a solid line. The flow near the outer wall flows along the outer walls 15, 14, and the wind direction control plates 10a, 10b
Converges with the air flow deflected by the air flow and blows out from the step 17 toward the room in the direction of the second tangent line 16.

If the radius of the arc 14 is small or the flow velocity is high, the air flow separates from the arc 14 and the room air flows backward to the stepped portion 17 to cause dew condensation during cooling, or to cause cooling during heating or cooling. Of the second tangent line 16
Blows downward from the direction of. Second tangent 1
If the air flow is provided, the air flow can be reattached to the wall surface. During cooling, the cold air flow and the indoor air can be separated by the step portion 17 to prevent dew condensation, and the blowing direction can be reliably in the direction of the second tangent line 16. Can be controlled.

The fact that the blow-out direction can be controlled reliably means that the blow-off airflow can be prevented from adhering to the ceiling, so that ceiling dirt caused by this can be prevented.
Moreover, since it can be blown out at 35 degrees from horizontal,
A comfortable indoor environment can be provided without giving the user a sense of draft.

The step 17 is provided for the purpose of positively creating a flow as shown by a dashed line in FIG. 5 and for completely separating the blown air and the room air at the top of the step 17.

The detailed shape of the step 17 is shown in FIG. In order to create the flow indicated by the dashed line,
It is necessary to create a negative pressure area in the area A in FIG. 6A, but for that purpose, the angle θ in FIG. 6B should be 90 ° or more. As long as the negative pressure region A can be formed, the shape outside the step does not matter. For example, as shown in FIG. 6 (c), the shape may be further raised toward the inside of the room outside the step, but the design should be made so that the panel does not obstruct the traveling direction of the blown air flow. In this case, the leeward end 12 of the outer wall is shown in FIG.
The position shown in FIG.

For the purpose of completely separating the indoor air and the blown air stream at the top of the step portion 17, R in FIG. 6B is ideally an edge, but R is generated during the manufacturing process. Should be kept within R5 mm.

Here, another effect in the shape of FIG. 4 will be described. Since C01 and C02 are in the same direction, the airflow is not reduced by the wind direction control plates 10a and 10b and the wall surface, and the airflow resistance is reduced. Since it is low, horizontal blowing can be performed without lowering the blowing air volume or with low noise. Also, since the wind direction control plate 10a is in the wind path,
In the unlikely event that the wind direction control plate is driven more horizontally than the set value, C01 and C02 form a contraction airflow path, the flow velocity near the outer wall increases, and the flow along the second tangent line 16 is strengthened. Horizontal blowing direction is maintained. For this reason, highly reliable airflow control that does not stain the ceiling surface or impair comfort can be achieved.

In addition, in the vicinity of the inner wall, an enlarged wind path is formed by the arc-shaped wind direction control plate 10b and the inner wall surface. Since the wind direction control plate 10b has an arc shape, the airflow flows along the wind direction control plate 10b due to the Coanda effect. Therefore, an expanded airflow is formed in accordance with the expanded air path, and the room air does not flow into the air path as shown by the dotted line in FIG.
No dew occurs during cooling. After being blown out of the air passage into the indoor space, the slow flow near the inner wall is drawn in the direction of the fast flow near the outer wall and flows in the horizontal blowing direction.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a sectional view of an outlet of an indoor unit of an air conditioner with concealed ceiling according to Embodiment 2 of the present invention. As shown in the drawing, the direction of the arc-shaped tangent of the inner wall, which is the fourth means, is substantially the same as the direction H01 of the downward blowing. At this time, it is desirable that the leeward tangents H02 and H03 of the wind direction control plates 10a and 10b are also set to be in the same direction.

Next, the flow of the air flow is shown in FIG. The air flow forms a downward blowing vector and blows out by the arc shape 18 of the inner wall and the wind direction control plate 10b. At this time, since the arc-shaped tangent line of the inner wall is the same as the downward direction, the downward blowing can be performed without increasing the blowout pressure loss more than necessary, without reducing the air volume, or with low noise. . The lower blowing angle is preferably 60 ° to 65 ° from the horizontal because the horizontal direction is such that a short cycle does not occur and is downward such that warm air reaches the indoor floor surface during heating.

The flow on the outer wall side flows along the outer wall due to the arc shape 14 and the second tangent line 16 Coanda effect,
It is completely separated from the room air indicated by the dotted line in the figure at the step portion 17. For this reason, since dew does not occur during cooling, it is possible to perform downward blowing even during cooling.

The flow on the outer wall side is based on the outer wall and the wind direction control plate 10a.
After being blown out into the room while being decelerated by the enlarged wind path formed in the inside, the air is drawn into the flow on the inner wall side having a high flow velocity and flows downward.

Here, if this embodiment is used together with the first embodiment or the third embodiment (described later), it is possible to prevent dew condensation during horizontal blowing. Since downward blowing and horizontal blowing are the two most severe conditions for dew condensation, it can be said that dew does not occur at an arbitrary blowing angle from horizontal blowing to lower blowing. According to the above-described specific effect, the room can be rapidly cooled, for example, by using the lower blowing at the time of startup. In addition, the swing can be used to lower the sensible temperature by utilizing the sense of airflow, so that a low-capacity driving can provide a pleasant and low-power operation.

Here, the case where the number of wind direction control plates is two has been described, but control can be similarly performed when there is only one wind direction control plate.

Embodiment 3 FIG. Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a sectional view of an outlet of an indoor unit of a ceiling-mounted air conditioner according to Embodiment 3 of the present invention. The point different from the first embodiment is that the wind direction control plate has a single arc shape, and is arranged in the air path at the time of horizontal blowing. The outer wall is formed by the arc shape 14 and the first tangent 15, and there is no second tangent. The tangent direction of the arc shape 14 is the horizontal blowing direction C01.
And the same direction.

FIG. 10 shows the flow of the air flow at the time of horizontal blowing by arrows. The air flow along the outer wall 12 is controlled by the wind direction control plate 10 on the way.
The air flow deflected by the air flow merges with the air flow to increase the speed, and the step 17
And separates from indoor air and flows horizontally. Arc shape 14
Flows along the arc shape 14 when the radius of the circle can be increased. Then, since the air is completely separated from the room air at the step portion 17, dew condensation does not occur.

Since the wind direction control plate 10 is formed in an arc shape, the air flow flows along the wind direction control plate 10 on the lower side (negative pressure side) of the wind direction control plate 10 due to the Coanda effect. Does not happen. Further, the blowout pressure loss is remarkably low as compared with the case where deflection is performed by the flat wind direction control plate 10.

Since the wind direction control plate is composed of a single sheet, the assembly process is not required, and the plate can be made of a curved and sheet metal member. If the member is a plastic member, it can be manufactured with a simple mold.

The flow on the inner wall side flows along the circular arc 18, is cut off from the indoor air at the tip, and is drawn into the flow on the outer wall side having a high flow velocity in the indoor space. Since the direction of the airflow is determined by the arc shape 14 on the outer wall side, even if the wind direction control plate 10 is oriented too horizontally, it is possible to blow the airflow accurately in a predetermined direction.

The tangential direction C0 of the tip of the wind direction control plate 10
If 2 is set to be the same as the blowing direction, a large air volume or low noise can be secured without increasing the blowing pressure loss.

[0041]

According to the first aspect of the present invention, there is provided an embedded type air conditioner in which a flow path is formed by an indoor unit main body, an inner wall and an outer wall, and conditioned air conditioned by the harmony means of the main body is blown into the room. A wind direction control plate that is rotatably provided at the outlet and at the outlet to control a direction in which the conditioned air is blown into the room; and a wind direction control plate that is provided at the leeward side of the outer wall of the outlet to direct the conditioned air into the room along the outer wall. Since the first means for blowing in the horizontal blowing direction controlled by the control plate and the second means for separating the conditioned air and room air blown into the room by the first means are provided, Since the blown air flows smoothly without separating from the outer wall and is completely separated from the room air by the second means, dew does not occur. Further, the blowout pressure loss is small, and a large air volume or low noise can be achieved. Furthermore, the direction of the blown airflow can be easily and reliably set, and there is no airflow attached to the ceiling surface, and it is possible to blow air in the horizontal direction without giving a draft feeling to the user.

According to a second aspect of the present invention, there is provided the embedded air conditioner according to the first aspect, provided between the first means and the second means. According to the second aspect of the present invention, the arc-shaped leeward side is constituted by a tangential line because the third means for attaching the separated conditioned air to the outer wall is provided.
Even in the case where the first means has a structure that is easy to peel off, the separated airflow can be re-attached by the third means, so that the same effect as the first aspect is achieved.

According to a third aspect of the present invention, there is provided an embedded type air conditioner, wherein an indoor unit main body, a flow path formed by an inner wall and an outer wall, and a conditioned air blown into the room by the harmony means provided in the main body. A wind direction control plate that is rotatably provided at the outlet and controls the direction in which the conditioned air is blown into the room, and is provided on the leeward side of the inner wall of the outlet,
With the fourth means for blowing the conditioned air into the room in the direction of the downward blowing controlled by the wind direction control plate, there is no separation of the airflow in the air path, and at the tip of the fourth means,
Since the blowout airflow and the room air are completely separated, dew does not occur. In addition, by providing an airflow control pattern that matches an indoor environment or a driving scene from a wide airflow control range, comfort is remarkably improved. In addition, the blowout pressure loss is low, and it is possible to increase the air volume or reduce noise.

According to a fourth aspect of the present invention, there is provided the embedded air conditioner according to the first aspect, wherein at least one of the wind direction control plates is located in the air path of the air outlet, so that the air conditioner is horizontal. When blowing, even if it is inclined too much horizontally than the set position, the blowing direction is determined by the shape of the outer wall, so there is no danger of blowing airflow adhering to the ceiling and keep the blowing angle without a sense of draft Is possible. Therefore, the reliability is improved with respect to prevention of dirt on the ceiling and prevention of draft feeling.

According to a fifth aspect of the present invention, there is provided the embedded air conditioner according to the first aspect, wherein the wind direction control plate is located in the air path of the outlet at the time of horizontal blowing. Since it is configured in an arc shape, the air flow also flows along the negative pressure surface side of the wind direction control plate due to the Coanda effect at an arbitrary blowing angle from horizontal blowing to downward blowing, so that dew condensation does not occur. And since it is constituted by one sheet, the assembling process is unnecessary, and it is possible to manufacture even a curved sheet metal member. If it is a plastic member, it can be manufactured by a simple mold.

[Brief description of the drawings]

FIG. 1 is a perspective view of an indoor unit of a ceiling-embedded air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the indoor unit of the ceiling-mounted air conditioner according to Embodiment 1 of the present invention.

FIG. 3 is a sectional view of an outlet of the ceiling cassette type air conditioner according to Embodiment 1 of the present invention.

FIG. 4 is a sectional view of the outlet of the ceiling cassette type air conditioner according to Embodiment 1 of the present invention.

FIG. 5 is a blowing flowchart of the ceiling cassette type air conditioner according to Embodiment 1 of the present invention.

FIG. 6 is a detailed explanatory diagram of a step of the ceiling cassette type air conditioner according to Embodiment 1 of the present invention.

FIG. 7 is a sectional view of an outlet of a ceiling cassette type air conditioner according to Embodiment 2 of the present invention.

FIG. 8 is a blowing flowchart of the ceiling cassette type air conditioner according to Embodiment 2 of the present invention.

FIG. 9 is a sectional view of an outlet of a ceiling cassette type air conditioner according to Embodiment 3 of the present invention.

FIG. 10 is a blowing flowchart of the ceiling cassette type air conditioner according to Embodiment 3 of the present invention.

FIG. 11 is a sectional view of an outlet of a conventional ceiling cassette type air conditioner.

FIG. 12 is a flow chart of horizontal blowing of a conventional ceiling cassette type air conditioner.

FIG. 13 is a flow chart of a conventional ceiling cassette type air conditioner under blowing.

[Explanation of symbols]

1 body, 2 decorative panel, 3 outlet, 4 inlet, 5 outlet duct, 10 wind direction control plate, 12
Downwind end of outer wall, 13 Downwind end of inner wall, 14
Arc shape, 15 first tangent, 16 second tangent, 17
Step, 18 inner wall arc shape.

Claims (5)

[Claims] An indoor unit main body, a flow path formed by an inner wall and an outer wall, and a blowout port for blowing conditioned air conditioned by a harmony means of the main body into a room; and a rotatably provided at the blowout port. A wind direction control plate that controls a direction in which the conditioned air is blown into the room; and a wind direction control plate that is provided on the lee side of the outer wall of the outlet and controls the conditioned air into the room along the outer wall. A first means for blowing in the horizontal blowing direction, and a second means for separating the conditioned air and room air blown into the room by the first means. Embedded air conditioner. 2. A method according to claim 1, further comprising a third means provided between said first means and said second means for attaching said conditioned air separated from said first means to said outer wall. The embedded type air conditioner according to claim 1, wherein: 3. An indoor unit main body, a flow path formed by an inner wall and an outer wall, and a blowout port for blowing conditioned air conditioned by the harmony means of the main body into a room, and the blowout port is provided rotatably. A wind direction control plate that controls a direction in which the conditioned air is blown into the room; and a direction of a downward blow that is provided on the leeward side of the inner wall of the outlet and controls the conditioned air into the room by the wind direction control plate. And a fourth means for blowing air into the air conditioner. 4. The embedded air conditioner according to claim 1, wherein at least one of the wind direction control plates is located in an air path of the outlet. 5. The embedded air conditioner according to claim 1, wherein the airflow direction control plate is located in the airflow path of the air outlet at the time of horizontal airflow, and is formed in a single circular arc shape.