JP2018138835A - Indoor equipment for air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide indoor equipment for an air-conditioning system for enabling task ambient air-conditioning by itself.SOLUTION: The indoor equipment includes a blowout member 20 cylindrically formed and provided in a blowout flow path 16 of a casing 2 rotatably around a center axis O, and a driving part 25 for driving the rotation of the blowout member 20, the blowout member 20 being formed with a plurality of ventilation paths 21, 22 having inlets 21a, 22a and outlets 21b, 22b opened in the outer peripheral face of the blowout member 20, the blowout member 20 being formed with the plurality of ventilation paths 21, 22 having the inlets 21a, 22a and the outlets 21b, 22b opened in the outer peripheral face of the blowout member 20 so that air flows in from the inlets 21a, 22a and flows out from the outlets 21b, 22b at mutually different wind speeds, the plurality of ventilation paths 21, 22 being selectively communicated with the blowout flow path 16 by the rotation of the blowout member 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an indoor unit of an air conditioner.

  In general, an air conditioner adjusts an entire room to a desired environment by blowing out air with adjusted temperature and humidity (hereinafter also referred to as “conditioned air”) from the indoor unit. Task / ambient air conditioning systems have been proposed that attempt to locally adjust specific areas in the room.

  For example, the air conditioning system described in Patent Literature 1 is arranged on the ceiling, and the ambient air conditioning equipment that adjusts the living room environment as a whole, and the room environment by blowing from any air outlet among the air outlets provided on the floor. It is equipped with a task air conditioning facility that locally adjusts. Patent Document 2 also discloses an air conditioning system including an ambient air conditioning unit that performs air conditioning of the entire room and a task air conditioning unit that performs local air conditioning around a target person in the room. Yes.

JP 2011-2104 A JP 2015-17767 A

The air conditioning systems described in Patent Documents 1 and 2 need to be provided with different air conditioning facilities corresponding to the ambient area and the task area, respectively. Therefore, the equipment becomes large and the cost is high.
On the other hand, in general indoor units installed on indoor ceilings and walls, etc., the conditioned air cannot be blown into the ambient area and the task area. Therefore, it is difficult to provide an appropriate indoor environment.

  An object of this invention is to provide the indoor unit of the air conditioning apparatus which enables task ambient air-conditioning with one indoor unit.

(1) An indoor unit of an air conditioner according to the present invention (hereinafter also simply referred to as “indoor unit”)
An indoor unit comprising a casing having a blowout flow path, a heat exchanger and a fan accommodated in the casing, and blowing out an air flow generated by the fan from the blowout flow path into the room through the heat exchanger;
A blowing member formed in a cylindrical shape and provided in the blowing flow path so as to be rotatable around a central axis;
A drive unit that rotationally drives the blowing member,
The blowing member has a plurality of ventilation paths in which an inlet and an outlet are opened on the outer peripheral surface of the blowing member, and the wind speeds of the air flowing in from the inlet and blown out from the outlet are different from each other,
The plurality of ventilation paths are selectively communicated with the blowing channel by rotation of the blowing member.

  According to the above configuration, the blowing member provided in the blowing channel of the indoor unit has a plurality of ventilation paths, and the plurality of ventilation paths are selectively communicated with the blowing channel by the rotation of the blowing member. Any one of the ventilation paths can be selected and communicated with the blowout flow path, and air can be blown out through the ventilation path. Since the air speeds of the air blown from the outlets are different from each other in the plurality of ventilation paths, the reach distances of the air blown out from the respective ventilation paths are also different from each other, and the task air conditioning is selected by selecting a ventilation path having a longer reach distance. Ambient air conditioning is enabled by selecting a ventilation path with a shorter reach.

(2) The said structure WHEREIN: It is preferable that the said casing is provided with the said several blowing flow path, and the said blowing member is provided in each blowing flow path.
With such a configuration, both ambient air conditioning and task air conditioning can be realized simultaneously using a plurality of outlet channels.

(3) The said structure WHEREIN: It is preferable that the area ratios of the said entrance and the said exit differ in these ventilation paths.
With such a configuration, it is possible to easily vary the wind speed of the air blown from the outlet of each ventilation path.

(4) In the above configuration, it is preferable that the inlets of the plurality of ventilation paths have the same area, and the outlets of the plurality of ventilation paths have different areas.
With such a configuration, the ventilation path having a larger exit area can blow out air at a lower wind speed in a wider area, and can be suitably used for ambient air conditioning. Further, the air passage having a smaller exit area can blow out air at a larger wind speed in a narrower region, and can be suitably used for task air conditioning.

(5) In the above configuration, the inlets of the plurality of ventilation paths have the same shape, and the outlets of the plurality of ventilation paths are formed in a rectangular shape that is long in the direction of the central axis of the blowing member, and have long sides. It is preferable that the lengths are different.
With such a configuration, the ventilation path with the longer long side of the outlet can blow out air at a lower wind speed in a wider area, and can be suitably used for ambient air conditioning. Moreover, the air flow path with a short outlet long side can blow out air at a larger wind speed in a narrower region, and can be suitably used for task air conditioning.

(6) In the above configuration, it is preferable that the air blowing direction of the blowing member is controlled by rotation around the central axis.
With such a configuration, the wind direction can be easily adjusted by the rotation of the blowing member.

(7) In the configuration described above, it is preferable that the plurality of ventilation paths have a cross-sectional shape including the inlet and the outlet formed symmetrically with respect to each other about the central axis.
With such a configuration, by rotating the blowing member by 180 degrees, a plurality of ventilation paths can be positioned at the same position, and a configuration for selectively communicating each ventilation path with the blowing channel can be easily realized. it can.

(8) The said structure WHEREIN: The said ventilation path where the wind speed of the air which blows off from the said outlet is larger may be divided and formed in multiples in the central-axis direction of the said blowing member.
With such a configuration, task air conditioning can be performed at a plurality of locations in the room.

  According to the present invention, task ambient air conditioning can be performed by one indoor unit.

It is a perspective view of the indoor unit of the air conditioning apparatus which concerns on the 1st Embodiment of this invention. It is a section explanatory view of the indoor unit shown in FIG. It is sectional explanatory drawing which expands and shows a blowing flow path. It is a perspective view which shows roughly the blowing member provided in the blowing flow path. It is a perspective view which shows roughly the blowing member provided in the blowing flow path. It is explanatory drawing which shows a mode that conditioned air is blown off from the exit of a ventilation path. It is sectional explanatory drawing which shows the blowing flow path closed by the blowing member. It is a perspective view which shows schematically the blowing member in the 2nd Embodiment of this invention.

  Hereinafter, embodiments of an indoor unit of the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to the claim are included.

<First Embodiment>
FIG. 1 is a perspective view of the indoor unit of the air-conditioning apparatus according to the first embodiment, and FIG. 2 is a cross-sectional explanatory view of the indoor unit shown in FIG.
The indoor unit 1 is a ceiling-embedded indoor unit and includes a casing 2 that houses various elements such as an indoor fan and a heat exchanger described later. The casing 2 includes a box-shaped casing body 2a having a lower end surface opened, and a decorative panel 3 provided at the lower end opening of the casing body 2a.

  The casing body 2a is disposed in an opening formed in the ceiling C, as shown in FIG. The decorative panel 3 is made of a rectangular (substantially square) plate, and a suction port 4 for sucking indoor air is formed in the center. In addition, air outlets 5 for blowing conditioned air into the room are formed at a plurality of locations, specifically at four locations, around the suction port 4. Each blower outlet 5 is formed in the shape of an elongated rectangle, and is formed around the suction inlet 4 along the four sides of the decorative panel 3.

  A suction grill 6 and a filter 7 for removing dust in the indoor air sucked from the suction port 4 are arranged in this order in the suction port 4 of the decorative panel 3 from the indoor side.

  Inside the casing 2 is an indoor fan 8 that sucks air in the air-conditioned room from the suction port 4 of the decorative panel 3, performs heat exchange on the air, and then blows conditioned air into the room from the outlet 5 of the decorative panel 3. A heat exchanger 9 is provided so as to surround the indoor fan 8. The indoor fan 8 has a motor 10 and an impeller 11. In the casing 2, a control unit P that controls the operation of the indoor fan 8 and the rotation of a blowing member 20 described later is disposed.

  The heat exchanger 9 is a cross fin tube type heat exchanger formed by being bent so as to surround the indoor fan 8. Below the heat exchanger 9, the heat exchanger 9 is in the air where heat is exchanged by the heat exchanger 9. A drain pan 12 is provided for receiving drainage generated by the condensation of water.

  In the drain pan 12, a suction hole 13 corresponding to the suction port 4 of the decorative panel 3 is formed. Further, the drain pan 12 is formed with an air outlet 14 corresponding to the air outlet 5 of the decorative panel 3. The blowout hole 14 and the blowout port 5 constitute a blowout flow path 16 in the casing 2. A bell mouth 15 for guiding air sucked from the suction port 4 of the decorative panel 3 to the impeller 11 of the indoor fan 8 is attached to the inner edge of the suction hole 13.

FIG. 3 is an explanatory cross-sectional view showing the blowout flow path 16 in an enlarged manner. 4 and 5 are perspective views schematically showing the blowing member provided in the blowing channel 16.
Each blowing channel 16 is provided with a blowing member 20 for adjusting the speed and direction of conditioned air that passes through the blowing channel 16 and is blown into the room. The blow-out member 20 is formed in a cylindrical shape, and is provided in a state where the direction of the central axis O coincides with the longitudinal direction of the blow-out port 5. Further, the blowing member 20 is provided so as to be rotatable around the central axis O. The blowing member 20 can be rotated by a motor (driving unit) 25 that transmits power to the rotating shaft 20a disposed on the central axis O.

  An arcuate guide surface 16 a along the outer peripheral surface of the blowing member 20 is formed in the blowing channel 16. This guide surface 16a contacts the outer peripheral surface of the blowing member 20, or is disposed with a slight gap between the guide surface 16a and the outer peripheral surface. The guide surface 16a has a function of guiding rotation of the blowing member 20 and closing a plurality of ventilation paths 21 and 22, which will be described later, which are not used.

  A plurality of ventilation paths 21 and 22 are formed in the blowing member 20. In the present embodiment, two independent ventilation paths (first ventilation path 21 and second ventilation path 22) are formed. The two ventilation paths 21 and 22 are formed so that the cross-sectional shape at the center in the direction of the central axis O is point-symmetric about the central axis O. Then, by rotating the blowing member 20 around the central axis O, the inlets 21a and 22a of one of the ventilation paths 21 and 22 can be communicated with the blowing flow path 16, and the ventilation paths 21 and 22 pass through. Conditioned air can be blown into the room.

  As shown in FIG. 4, the first ventilation path 21 has an inlet 21 a and an outlet 21 b formed in a rectangular shape elongated in the direction of the central axis O. Moreover, the 1st ventilation path 21 is formed in the curved shape between the entrance 21a and the exit 21b.

  The inlet 21 a and the outlet 21 b of the first ventilation path 21 have the same length in the direction of the central axis O of the blowing member 20. Further, as shown in FIG. 3, the inlet 21 a and the outlet 21 b both have circumferential widths w <b> 1 and w <b> 2 that are smaller than the radius of the blowing member 20. In the first ventilation path 21, one inner wall surface 21c is inclined in the vicinity of the outlet 21b, so that the width w2 of the outlet 21b of the first ventilation path 21 is larger than the width w1 of the inlet 21a. It is slightly smaller. Therefore, the area of the outlet 21b of the ventilation path 21 is slightly smaller than the area of the inlet 21a.

  As shown in FIG. 5, the second ventilation path 22 has an inlet 22 a and an outlet 22 b that are elongated in the direction of the central axis O. The second ventilation path 22 is formed in a curved shape between the inlet 22a and the outlet 22b.

  The inlet 22a of the second ventilation path 22 is formed in the same shape as the inlet 21a of the first ventilation path 21 and has the same area. The outlet 22b of the second ventilation path 22 has substantially the same circumferential width w2 as the outlet 21b of the first ventilation path 21, but the length in the direction of the central axis O (long side length). However, it is shorter than the outlet 21 b of the first ventilation path 21. Therefore, the area of the outlet 22 b of the second ventilation path 22 is smaller than the area of the inlet 22 a and the area of the outlet 21 b of the first ventilation path 21, for example, ½ or less. Therefore, the area ratio between the inlet 21a and the outlet 21b in the first ventilation path 21 and the area ratio between the inlet 22a and the outlet 22b in the second ventilation path 22 are different from each other.

  Further, the outlet 22 b of the second ventilation path 22 is formed at the approximate center of the blowing member 20 in the direction of the central axis O. In the second ventilation path 22, inner side surfaces 22 d on both sides in the direction of the central axis O are formed in an inclined shape from the inlet 22 a to the outlet 22 b. Therefore, the cross section of the second ventilation path 22 gradually decreases from the inlet 22a toward the outlet 22b.

  One of the two ventilation paths 21 and 22 formed in the blowing member 20 is selected by rotating the blowing member 20 around the central axis O, and communicates with the blowing channel 16. When the first ventilation path 21 is selected, as shown in FIG. 6A, the conditioned air is blown into the room in a wider range A1. Therefore, it is possible to suitably adjust the temperature and humidity in a wide area in the room, and so-called ambient air conditioning becomes possible.

  On the other hand, when the second ventilation path 22 is selected, the conditioned air is blown into the room in a narrower range A2, as shown in FIG. 6 (b). Since the flow path of the second ventilation path 22 is narrowed from the inlet 22a to the outlet 22b, the conditioned air is blown out with the wind speed increased. Therefore, the reach distance of conditioned air becomes long, and for example, it becomes possible to blow conditioned air directly on a specific person in the room. That is, so-called task air conditioning can be performed by selecting the second ventilation path 22.

  In addition, the wind direction can be adjusted by slightly rotating the blowing member 20 in a state where any one of the ventilation paths 21 and 22 is selected. For example, in the state shown in FIG. 4, conditioned air is blown from the outlet 21b of the first ventilation path 21 in a direction close to the horizontal, but when the blowing member 20 is rotated slightly clockwise, the first ventilation path The conditioned air can be blown downward from the outlet 21b of 21.

As shown in FIG. 7 (a), the outer peripheral surface of the blowing member 20 in which the inlets 21 a and 22 a and the outlets 21 b and 22 b of the first and second ventilation paths 21 and 22 are not formed is used as the blowing channel 16. By making it correspond, the said blowing flow path 16 can be closed. Therefore, it becomes possible to stop the blowing of conditioned air from the blowing flow path 16.
When the operation is stopped, as shown in FIG. 7B, the outer peripheral surface of the blowing member 20 in which the inlets 21a and 22a and the outlets 21b and 22b of the first and second ventilation paths 21 and 22 are not formed. Is matched with the blower outlet 5 of the decorative panel 3. By doing so, the inlets 21a and 22a and the outlets 21b and 22b of the ventilation paths 21 and 22 are not exposed to the outside through the outlet 5, and it is visually confirmed that the operation of the indoor unit 1 is stopped. Can be confirmed. However, the mode shown in FIG. 7A may be adopted when the operation is stopped, or the mode shown in FIG. 7B may be adopted when stopping the blowing of conditioned air from the blowout flow path 16. Good.

  In the indoor unit 1 according to the present embodiment, four blowing channels 16 are formed, and a blowing member 20 is provided in each blowing channel 16. Therefore, task air conditioning can be performed by any one of the blowing members 20, and ambient air conditioning can be performed by the remaining blowing members 20. For example, task air conditioning is performed using any one of the blowing members 20, and ambient air conditioning is performed using the remaining three blowing members 20, thereby appropriately adjusting the room environment of the entire room, and the indoor environment at a specific location. Can be adjusted locally.

  Therefore, the air conditioner of this embodiment can perform both ambient air conditioning and task air conditioning by one indoor unit 1, and simplifies the facilities compared to the case where these are performed by different different facilities, Cost can be reduced.

<Second Embodiment>
FIG. 8 is a perspective view for explaining the blowing member 20 in the second embodiment of the present invention.
The blowing member 20 has a shape in which the second ventilation path 22 is divided into two in the direction of the central axis O of the blowing member 20. Specifically, the second ventilation path 22 has two branch paths 23 and 24 arranged side by side in the central axis O direction, and the inlets 23a and 24a of both the branch paths 23 and 24 have the same shape. The outlets 23b and 24b are also formed in the same shape.

  Further, the areas of the outlets 23b and 24b of the branch paths 23 and 24 are formed smaller than the areas of the inlets 23a and 24a. Further, in each branch path 23, 24, inner side surfaces 23d, 24d on both sides in the direction of the central axis O are formed in an inclined shape, and each branch path 23, 24 is directed from the inlets 23a, 24a to the outlets 23b, 24b. The cross-sectional area gradually decreases. Therefore, the conditioned air that passes through the branch paths 23 and 24 is blown out in a state where the wind speed is increased, and the reach distance is extended. Therefore, by using the second ventilation path 22 of the present embodiment, task air conditioning can be performed at two locations in the room.

  In the present embodiment, the areas of the inlets 23a and 24a in the two branch paths 23 and 24 may be different from each other, and the areas of the outlets 23b and 24b may be different from each other. The second ventilation path 22 may have three or more branch paths.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims.
For example, in each of the above-described embodiments, four blowout channels 16 (blowout ports 5) are provided in the indoor unit 1, but five or more or three or less blowout channels 16 may be provided. However, it is possible to efficiently perform ambient air conditioning and task air conditioning by blowing conditioned air from at least four blowing channels 16 in all directions.

Moreover, the ventilation path | routes 21 and 22 are not restricted to two, and three or more may be formed.
In the above embodiment, the cassette type indoor unit 1 embedded in the ceiling C is illustrated, but the present invention can also be applied to a ceiling-suspended type, wall-mounted type, or floor-standing type indoor unit.

1: Indoor unit 2: Casing 8: Indoor fan 9: Heat exchanger 16: Blowing flow path 20: Blowing member 21: 1st ventilation path 21a: Inlet 21b: Outlet 22: 2nd ventilation path 22a: Inlet 22b: Exit 23: Branch path 24: Branch path O: Center axis

Claims (8)

A casing (2) having an outlet channel (16), a heat exchanger (9) and a fan (8) accommodated in the casing (2), and the air flow generated by the fan (8) An indoor unit that blows out into the room from the blowing channel (16) through a heat exchanger (9),
A blowout member (20) formed in a cylindrical shape and provided in the blowout flow path (16) so as to be rotatable around a central axis (O);
A drive unit (25) for rotationally driving the blowing member (20),
The blowing member (20) has a plurality of ventilation paths (21, 22) in which inlets (21a, 22a) and outlets (21b, 22b) are opened on the outer peripheral surface of the blowing member (20). ,
The blowing member (20) has an inlet (21a, 22a) and an outlet (21b, 22b) that are open on the outer peripheral surface of the blowing member (20) and flows into the outlet (21b). , 22b) has a plurality of ventilation paths (21, 22) with different wind speeds of air blown from each other,
The plurality of ventilation paths (21, 22) are indoor units of an air conditioner that are selectively communicated with the blowing passage (16) by the rotation of the blowing member (20).   2. The air conditioner according to claim 1, wherein the casing (2) includes a plurality of the blowing channels (16), and the blowing member (20) is provided in each blowing channel (16). Indoor unit.   The indoor space of the air conditioner according to claim 1 or 2, wherein the plurality of ventilation paths (21, 22) have different area ratios between the inlet (21a, 22a) and the outlet (21b, 22b). Machine.   The inlets (21a, 22a) of the plurality of ventilation paths (21, 22) have the same area, and the outlets (21b, 22b) of the plurality of ventilation paths (21, 22) have different areas. The indoor unit of the air conditioning apparatus according to claim 3.   The inlets (21a, 22a) of the plurality of ventilation paths (21, 22) have the same shape, and the outlets (21b, 22b) of the plurality of ventilation paths (21, 22) are connected to the blowing member (20 The indoor unit of the air conditioning apparatus according to claim 3 or 4, wherein the long sides are different from each other in a long rectangular shape in the central axis (O) direction.   The air conditioner indoor unit according to any one of claims 1 to 5, wherein the blowing member (20) has a wind direction controlled by rotation around the central axis (O).   The plurality of ventilation paths (21, 22) have a cross-sectional shape including the inlets (21a, 22a) and the outlets (21b, 22b) formed symmetrically with respect to the central axis (O). The indoor unit of the air conditioning apparatus of any one of Claims 1-6.   The ventilation path (22) in which the wind speed of the air blown from the outlet (22b) is larger is formed by being divided into a plurality in the direction of the central axis (O) of the blowing member (20). The indoor unit of the air conditioning apparatus of any one of 7.

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