JP2023114146A - Ceiling embedded type indoor unit - Google Patents

Abstract

To provide a ceiling embedded type indoor unit that can suppress drop of a dew condensation water adhering to a side wall of a flap.SOLUTION: A ceiling embedded type indoor unit 10 includes: an indoor unit body 14 including an air outlet 34; a fan installed inside the indoor unit body 14; and a flap 35 supported to the indoor unit body 14 so as to be rotatable to open and close the air outlet 34. A plurality of first irregularity parts 40 is formed in a side wall 36 of the flap 35.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to ceiling-mounted indoor units.

Patent Document 1 discloses that a first horizontal flap has a windward wing portion including a central shaft portion, a left shaft portion, and a right bearing portion of the first horizontal flap, and a leeward side portion bent slightly upward from the windward wing portion. A plurality of grooves having a V-shaped cross section are formed along the longitudinal direction of the first horizontal flap on the lower wing surface of the leeward side wing portion.

JP 2010-091260 A

The present disclosure provides a ceiling-embedded indoor unit capable of suppressing dripping of condensed water adhering to side walls of flaps.

A ceiling-embedded indoor unit according to the present disclosure includes an indoor unit main body having an air outlet, a fan provided in the indoor unit main body, and a flap rotatably supported by the indoor unit main body for opening and closing the air outlet. and, in the ceiling-embedded indoor unit, a side wall of the flap is formed with a plurality of first concave-convex portions.

In the ceiling-embedded indoor unit according to the present disclosure, the first concave-convex portion prevents the condensed water droplets adhering to the side wall of the flap from coming into contact with each other and aggregating, so that the condensed water droplets become larger. is suppressed. Therefore, it is possible to suppress dripping of the condensed water adhering to the side wall of the flap.

Sectional view showing the internal structure of the ceiling-embedded indoor unit according to Embodiment 1 Perspective view of the ceiling-embedded indoor unit according to Embodiment 1 4 is a perspective view showing a state in which the flap of the decorative panel according to Embodiment 1 is closed; FIG. FIG. 3 is a perspective view showing a state in which the flap of the decorative panel is opened according to Embodiment 1; A perspective view showing one end portion of the flap in Embodiment 1. 4 is a perspective view showing the upper surface wing portion of the flap according to the first embodiment; FIG. Partial perspective view showing the outlet portion of the decorative panel in Embodiment 1

(Knowledge, etc. on which this disclosure is based)
At the time when the inventors came up with the present disclosure, a plurality of grooves having a V-shaped cross section were provided along the longitudinal direction on the lower wing surface of the first horizontal flap to form unevenness, thereby forming the first horizontal flap. There was a technology that even if dew condensation occurs on the lower wing surface, the condensed water can be retained by the unevenness and water splashing can be prevented.
However, when cold air remains on the side wall of the flap during cooling operation, condensed water may adhere to the side wall. The inventors have discovered the problem that can lead to dripping and have come to form the subject matter of this disclosure in order to solve this problem.
Accordingly, the present disclosure provides a ceiling-embedded indoor unit capable of suppressing dripping of condensed water adhering to the side walls of the flap.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted.
It should be noted that the accompanying drawings and the following description are provided for a thorough understanding of the present disclosure by those skilled in the art and are not intended to limit the claimed subject matter.

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 5. FIG.
[1-1. composition]
[1-1-1. Configuration of indoor unit]
FIG. 1 is a cross-sectional view showing the internal structure of a ceiling-embedded indoor unit 10 of an air conditioner according to Embodiment 1 of the present disclosure. FIG. 2 is a perspective view of the ceiling-embedded indoor unit 10. FIG.
In the following description, up and down, inside and outside are explained based on the ceiling-embedded indoor unit 10 installed on the ceiling. A space into which air after air conditioning is blown out is defined as a room to be air-conditioned.

The ceiling-embedded indoor unit 10 is installed in the ceiling space 13 between the ceiling 11 of the building and the ceiling plate 12 installed below the ceiling 11 . The ceiling-embedded indoor unit 10 includes an indoor unit main body 14 and a decorative panel 30 covering a lower opening of the indoor unit main body 14. - 特許庁
The indoor unit main body 14 includes a substantially box-shaped housing 15 whose bottom surface is substantially entirely open. The indoor unit main body 14 includes a heat insulating member 16 made of polystyrene foam, an indoor heat exchanger 17, a blower 18, a drain pan 19 for receiving drain water from the indoor heat exchanger 17, and the blower 18. and a bell mouth 20 for rectifying the air flowing through.
Hanging fittings 21 are attached to the corners of the outer surface of the housing 15 . The indoor unit main body 14 is installed in a state of being suspended from the ceiling 11 by connecting the hanging metal fittings 21 to the hanging bolts 22 hanging down from the ceiling 11 .

The heat insulating member 16 is provided on the inner surfaces of the side plate 15 a and the top plate 15 b of the housing 15 to prevent condensation from occurring in the housing 15 .
The blower 18 is configured with a fan motor 23 and a centrifugal fan 24 . The fan motor 23 has a rotating shaft 23a extending downward, and the centrifugal fan 24 is fixed to the rotating shaft 23a.
The centrifugal fan 24 includes a disk-shaped main plate 24a fixed to the rotating shaft 23a, an annular shroud 24b arranged substantially coaxially with the main plate 24a below the main plate 24a, and a plurality of shrouds connecting the shroud 24b and the main plate 24a. wing 24c. A plurality of blades 24c are arranged at intervals in the circumferential direction of the main plate 24a.

The indoor heat exchanger 17 is formed by bending a plate-shaped heat exchanger into a substantially rectangular shape in a plan view so as to surround substantially the entire fan 18 from the sides.
The indoor heat exchanger 17 functions as a refrigerant evaporator during cooling operation, and functions as a refrigerant evaporator during heating operation. The indoor heat exchanger 17 exchanges heat between indoor air sucked into the indoor unit main body 14 and the refrigerant, and cools the air in the air-conditioned room during cooling operation and heats the indoor air during heating operation. is configured so that

The drain pan 19 is arranged below the indoor heat exchanger 17 so as to receive drain water generated in the indoor heat exchanger 17 . The drain pan 19 is made of polystyrene foam.
The drain pan 19 is formed in a substantially rectangular plate shape so as to close substantially the entire opening of the lower surface of the housing 15 . The drain pan 19 has a drain pan side suction port 25 (suction passage) through which the air sucked by the blower 18 passes in the central portion in plan view.

The decorative panel 30 is formed in a substantially rectangular plate shape in plan view so as to cover the opening on the lower surface of the indoor unit main body 14 .
A panel-side suction port 31 communicating with the bell mouth 20 is formed in the central portion of the decorative panel 30 . A suction grille 32 covering a panel-side suction port 31 is detachably attached to the decorative panel 30. - 特許庁A filter 33 for removing dust in the air is provided on the indoor unit main body 14 side of the suction grill 32 .

Air outlets 34 are formed outside the panel-side intake port 31 of the decorative panel 30 and along each side of the outer peripheral portion of the decorative panel 30 to send air after air conditioning to the room to be conditioned. That is, the air outlets 34 are provided along each side of the substantially rectangular decorative panel 30 in plan view, and air is blown out in four directions from the air outlets 34 .
The blow-out ports 34 are each provided with a flap 35 capable of adjusting the blow-out direction.

[1-1-2. Configuration of Concavo-convex Part]
FIG. 3 is a perspective view showing a state in which the flap 35 of the decorative panel 30 is closed. FIG. 4 is a perspective view showing a state in which the flap 35 of the decorative panel 30 is opened. FIG. 5 is a perspective view showing one end portion of the flap 35. FIG. FIG. 6 is a perspective view showing the upper wing portion of the flap 35. As shown in FIG. FIG. 7 is a partial perspective view showing the outlet 34 portion of the decorative panel 30. As shown in FIG.
In this embodiment, the flap 35 has side walls 36 provided at both ends thereof. A support shaft 37 that rotatably supports the flap 35 protrudes from the side wall 36 .
Both side walls 36 of the flap 35 are provided with first uneven portions 40 . The first uneven portion 40 is formed to extend in the thickness direction of the flap 35 .

A plurality of second uneven portions 41 are formed on both sides of the lower wing surface 38 of the flap 35 . The second uneven portion 41 is formed to extend in the longitudinal direction of the flap 35 .
Note that the first uneven portion 40 and the second uneven portion 41 may be formed continuously.

If the width dimension of the second concave-convex portion 41 is too short, the condensed water may drip from the end of the second concave-convex portion 41 . On the other hand, if the width dimension of the second concave-convex portion 41 is too long, the design of the lower surface side of the flap 35 is spoiled.
The width dimension of the second uneven portion 41 is preferably set to a width dimension that eliminates the trade-off between the function of retaining condensed water and the design. The width dimension of the second uneven portion 41 must be at least longer than the pitch width of the second uneven portion 41 . Moreover, it is preferable that the width dimension of the second concave-convex portion 41 is about three to six times the pitch width of the second concave-convex portion 41 . In the embodiment, for example, the length of the second uneven portion 41 is 9 mm, and the pitch of the uneven portions is 2 mm.

Further, on both sides of the upper wing surface 39 of the flap 35, side-surface-side stepped portions 42 formed with a large thickness dimension are provided. At the front end of the upper wing surface 39 of the flap 35, a front side stepped portion 43 is formed with a large thickness dimension.
By providing the side stepped portion 42 in this way, the area of the first uneven portion 40 can be increased, thereby ensuring a large adhesion area for the condensed water by the first uneven portion 40 .

In addition, an uneven portion that is continuous with the first uneven portion 40 may be formed on the upper surface of the side stepped portion 42 .
As a result, the condensed water adhering to the upper surface of the side stepped portion 42 can be retained by the uneven portion. Further, even if the condensed water retained by the uneven portion flows to the side wall 36 of the flap 35, the first uneven portion 40 can retain the condensed water.

As shown in FIG. 7, among the inner wall surfaces 36 of the decorative panel 30, a downstream inner wall surface 50 located downstream of the air blown out from the air outlet 34 (on the side of the outer wall surface 38 of the air outlet 34) has a curved surface. is formed in
A third uneven portion 51 is formed on the downstream inner wall surface 50 . The third uneven portion 51 extends linearly in a bottom view of the decorative panel 30 and extends vertically along the downstream inner wall surface 50 .
Further, the third concave-convex portions 51 have the same width and are arranged in parallel at regular intervals.

As shown in FIG. 3 , when the flap 35 closes the outlet 34 , the third uneven portion 51 is covered with the flap 35 over the entire longitudinal region of the flap 35 . In other words, the third concave-convex portion 51 is formed only in a range up to one side closer to the center of the ceiling-embedded indoor unit 10 than the tip of the flap 35 when the flap 35 closes the outlet 34 .

The decorative panel 30 has an outer wall surface 52 standing outside the outlet 34 , and an outer bottom surface 53 is formed on the outer side of the outer wall surface 52 so as to be continuous with the outer wall surface 52 .
A plurality of fourth uneven portions 54 are formed on the outer wall surface 52 . The fourth concave-convex portion 54 is formed to linearly extend in the vertical direction of the decorative panel 30 along the outer wall surface 52 from the upper end of the outer wall surface 52 . Further, the fourth uneven portions 54 have the same width and are arranged in parallel at regular intervals.
Therefore, grooves extending in the vertical direction of the decorative panel 30 are formed by the plurality of second uneven portions 39 formed on the outer wall surface 52 .
Furthermore, the upper end portion of the fourth uneven portion 54 is in contact with the outer bottom surface 53 .

Each of the first uneven portion 40, the second uneven portion 41, the third uneven portion 51, and the fourth uneven portion 54 has a substantially arcuate cross-sectional shape. The first rugged portion 40, the second rugged portion 41, the third rugged portion 51, and the fourth rugged portion 54 are formed such that the distance between the rugged portions is such that the contact angle with condensed water droplets is small.

[1-2. motion]
The operation and action of the ceiling-embedded indoor unit 10 configured as described above will be described.
During operation of the ceiling-embedded indoor unit 10, the rotation of the blower 18 causes the air in the room to be air-conditioned to be sucked from the panel-side suction port 31 (FIG. 1) and sent to the indoor heat exchanger 17 via the bell mouth 20. be done.
This air exchanges heat when passing through the indoor heat exchanger 17, and during the cooling operation of the ceiling-mounted indoor unit 10, the air is deprived of heat and the temperature decreases. Sometimes heat is given and the temperature rises. After the heat exchange, the air is blown out from the outlet 34 to the room to be conditioned.
The air that has passed through the blowout port 34 flows in the direction according to the orientation of the flap 35 . In addition, when the ceiling-embedded indoor unit 10 is stopped, the flap 35 is stationary so as to close the outlet 34 .

When the ceiling-embedded indoor unit 10 performs cooling operation, as described above, the air in the room to be conditioned is cooled by exchanging heat with the indoor heat exchanger 17, and this air is discharged from the outlet 34 again. sent into the room. Therefore, in the indoor heat exchanger 17, air with a high temperature and a large amount of saturated water vapor is cooled, and becomes air with a low temperature and a small amount of saturated water vapor. Therefore, drain water is generated in the indoor heat exchanger 17 . This drain water is received by a drain pan 19 provided below the indoor heat exchanger 17, sucked out by a drain pump (not shown), and discharged to the outside.

Condensed water is generated on the flap 35 and the decorative panel 30 during cooling operation of the ceiling-embedded indoor unit 10 .
In particular, in the vicinity of the outlet 34 from which air colder than the air in the room to be conditioned is blown, the side wall 36 of the flap 35, both sides of the lower wing surface 38 of the flap 35, the outer wall surface 52 of the outlet 34 are blown out. Condensed water is likely to occur on the downstream inner wall surface 50 on the downstream side of the air.
When the droplets of the dew condensation water grow or aggregate and reach a certain size or more, they drop due to their own weight.

In the present embodiment, by providing the first uneven portion 40 , the droplets of the condensed water adhering to the side wall 36 of the flap 35 are separated from each other by the first uneven portion 40 . As a result, the condensed water droplets are prevented from coming into contact with each other in the horizontal direction and gathering together. Therefore, the droplets of the condensed water are suppressed from becoming large.
Furthermore, the width of the first uneven portion 40 and the interval between the first uneven portions 40 are set so that the contact angle with the water droplets condensed on the side wall 36 of the flap 35 is small. The attached water droplets have a large surface area, which promotes evaporation of the water droplets.

Similarly, by providing the second uneven portion 41, the condensed water adhering to both sides of the flap 35 is prevented from becoming larger by the second uneven portion 41, and the condensed water droplets do not contact each other. Evaporation of condensed water can be promoted by reducing the angle.
Further, by providing the third uneven portion 51 and the fourth uneven portion 54, the droplets of condensed water adhering to the outer wall surface 52 of the air outlet 34 and the downstream inner wall surface 50 on the downstream side of the blown air are increased. can be suppressed and evaporation of condensed water can be promoted.

Further, when the flap 35 is in an intermediate position state between fully open and fully closed, dew condensation water tends to adhere to the side wall 36 of the flap 35 . Dropping of the condensed water can be suppressed by the first uneven portion 40 and the second uneven portion 41 .
Furthermore, when the flap 35 is fully opened, the first concave-convex portion 40 is positioned so as to extend substantially horizontally. As a result, when the air blown out from the blow-out port 34 flows in the vicinity of the first concave-convex portion 40, obstruction of the air flow is suppressed.

When the flap 35 is fully closed, the third uneven portion 51 is covered with the flap 35. Therefore, when the flap 35 is fully closed, dew condensation is difficult to occur, but when the flap 35 is fully open, dew condensation is likely to occur. Become.
On the other hand, when the flap 35 is fully closed, dew condensation easily occurs on the fourth uneven portion 54 .
Therefore, by providing the third concave-convex portion 51 and the fourth concave-convex portion 54, both when the flap 35 is fully closed and when the flap 35 is fully open, the droplets of the condensed water are prevented from becoming larger, and the condensed water is prevented from evaporating. can be promoted.
In this manner, the first uneven portion 40, the second uneven portion 41, and the third uneven portion are formed at locations where dew condensation water is likely to adhere according to each rotational position of the flap 35 and locations that are difficult for the user to visually recognize. By forming the 51 and the fourth concave-convex portion 54, it is possible to maintain the design while suppressing dripping of condensed water.

[1-3. effects, etc.]
As described above, in the present embodiment, the indoor unit main body 14 having the air outlet 34, the fan provided in the indoor unit main body 14, and the air outlet 34 rotatably supported by the indoor unit main body 14 are provided. and a flap 35 that opens and closes, and a plurality of first uneven portions 40 are formed on a side wall 36 of the flap 35 .
As a result, the condensed water droplets adhering to the side wall 36 of the flap 35 are prevented from coming into contact with each other and gathering together, and the condensed water droplets are prevented from becoming larger. Therefore, dripping of condensed water attached to the side wall 36 of the flap 35 can be suppressed.

Further, in the present embodiment, the first uneven portion 40 is formed such that the groove formed by the first uneven portion 40 extends in the thickness direction of the flap 35 .
Accordingly, compared to the case where the first uneven portions 40 extend in the direction orthogonal to the thickness direction of the flap 35, the number of the first uneven portions 40 can be increased, and the surface area of the first uneven portions 40 can be increased. becomes large, and the effect of suppressing dripping of condensed water can be improved.

Further, in the present embodiment, a plurality of second uneven portions 41 are formed on the side portion of the lower wing surface 38 of the flap 35, and the grooves formed by the second uneven portions 41 of the second uneven portions 41 It is formed to extend in the longitudinal direction of the side wing surface 38 .
As a result, even when the condensed water adhering to the first concave-convex portion 40 flows onto the lower blade surface 38 of the flap 35, the condensed water can be retained by the second concave-convex portion 41, thereby suppressing dripping of the condensed water. can be done. In addition, although the lower wing surface 38 of the flap 35 can be visually recognized by the user, the second uneven portion 41 is formed only on the side portion of the lower wing surface 38, so the second uneven portion 41 is difficult for the user to see, and the design is improved. without compromising sexuality.

Moreover, in the present embodiment, the first concave-convex portion 40 and the second concave-convex portion 41 are formed continuously.
As a result, the first uneven portion 40 and the second uneven portion 41 are continuously formed, so that the condensed water adhering to the first uneven portion 40 flows to the second uneven portion 41 and the condensed water on the side surface of the flap 35 is removed. The effect of suppressing dripping can be improved.

In the present embodiment, the indoor unit main body 14 is provided with a decorative panel 30 arranged on the lower surface side of the indoor unit main body 14, and the decorative panel 30 is formed with an air outlet 34 and an air outlet 34. A plurality of third uneven portions 51 are formed on at least one surface of the inner wall surface, and the third uneven portion 51 is a groove formed by the third uneven portion 51 are formed to extend in the vertical direction of the decorative panel 30 .
As a result, when the flap 35 is fully opened, condensed water tends to adhere to the inner wall surface of the outlet 34 , but by forming the third uneven portion 51 , dripping of the condensed water can be suppressed.

Further, in the present embodiment, the decorative panel 30 includes an outer wall surface 52 standing outside the outlet 34, and a plurality of fourth uneven portions 54 are formed on the outer wall surface 52. A groove 54 formed by the fourth uneven portion 54 extends in the vertical direction of the decorative panel 30 .
As a result, when the flap 35 is fully closed, condensed water tends to adhere to the outer wall surface 52 .

(Other embodiments)
As described above, Embodiment 1 has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like.
Therefore, other embodiments will be exemplified below.

In Embodiment 1, the first uneven portion 40 and the second uneven portion 41 are formed on both side walls 36 and the lower wing surface 38 of the flap 35, respectively, but the present disclosure is not limited to this.
For example, a plurality of fifth uneven portions are formed on the front end portion of the flap 35, and a sixth uneven portion formed continuously with the fifth uneven portions is formed on the front end portion of the lower wing surface 38 of the flap 35. may
The fifth uneven portion is formed such that the groove formed by the fifth uneven portion extends in the lateral direction of the front edge portion of the flap 35, and the sixth uneven portion is formed by the groove formed by the sixth uneven portion of the flap. It is formed so as to extend in the lateral direction of the lower wing surface 38 of 35 .
As a result, dripping of condensed water adhering to the front edge of the flap 35 can be suppressed.

Note that the above-described embodiment is for illustrating the technology in the present disclosure, and various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or equivalents thereof.

INDUSTRIAL APPLICABILITY The present disclosure can be applied to a ceiling-embedded indoor unit for air conditioning that can suppress dripping of condensed water when condensed water adheres to the flap or around the outlet of cold air. .

REFERENCE SIGNS LIST 10 ceiling-embedded indoor unit 14 indoor unit main body 15 housing 17 indoor heat exchanger 18 blower 19 drain pan 20 bell mouth 23 fan motor 30 decorative panel 34 outlet 35 flap 36 side wall 37 support shaft 38 lower wing surface 39 upper wing surface 40 First uneven portion 41 Second uneven portion 42 Side stepped portion 43 Front stepped portion 50 Downstream inner wall surface 51 Third uneven portion 52 Outer wall surface 53 Outer bottom surface 54 Fourth uneven portion

Claims (6)

A ceiling-embedded indoor unit comprising: an indoor unit main body having an air outlet; a fan provided in the indoor unit main body; and a flap rotatably supported by the indoor unit main body for opening and closing the air outlet. in
The ceiling-embedded indoor unit, wherein a side wall of the flap is formed with a plurality of first concave-convex portions. The ceiling-embedded indoor unit according to claim 1, wherein the first uneven portion is formed such that a groove formed by the first uneven portion extends in the thickness direction of the flap. A plurality of second uneven portions are formed on the side portion of the lower wing surface of the flap,
3. The ceiling-embedded indoor unit according to claim 2, wherein the second concave-convex portion is formed such that a groove formed by the second concave-convex portion extends in the longitudinal direction of the lower wing surface. The ceiling-embedded indoor unit according to claim 3, wherein the first uneven portion and the second uneven portion are formed continuously. The indoor unit main body includes a decorative panel arranged on the lower surface side of the indoor unit main body,
The decorative panel is provided with the air outlet and an inner wall surface facing the air outlet leading to the air outlet,
A plurality of third uneven portions are formed on at least one surface of the inner wall surface,
The ceiling lining according to any one of claims 1 to 4, wherein the third uneven portion is formed such that a groove formed by the third uneven portion extends in the vertical direction of the decorative panel. A built-in indoor unit. The decorative panel has an outer wall surface standing outside the outlet,
A plurality of fourth uneven portions are formed on the outer wall surface,
6. The ceiling-embedded indoor unit according to claim 5, wherein the fourth uneven portion has a groove formed by the fourth uneven portion extending in the vertical direction of the decorative panel.

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