WO2007123154A1

WO2007123154A1 - Ceiling-mounted air conditioner

Info

Publication number: WO2007123154A1
Application number: PCT/JP2007/058440
Authority: WO
Inventors: Tomohiro Yabu; Tetsuya Morizane; Kaichi Tsuji
Original assignee: Daikin Industries, Ltd.
Priority date: 2006-04-19
Filing date: 2007-04-18
Publication date: 2007-11-01
Also published as: JP4107333B2; JP2007285652A

Abstract

A ceiling-mounted air conditioner having air outlets formed on the outer side of an air inlet, wherein the direction of air blown out of the air outlets is controlled in various ways. A utilization unit (4) has a casing (5) having an airflow path (58) formed inside it, an indoor fan (42) provided in the casing (5), a utilization-side heat exchanger (41) provided in the casing (5), and a decorative panel (9) provided on the lower surface of the casing (5). The decorative panel (9) has a suction opening (61) communicating with the airflow path (58) and the air outlets (62a, 62b) placed outside the suction opening (61) and communicating with the airflow path (58). Horizontal flaps (65a, 65b) are rotatably arranged at air outlets (62a, 62b), respectively. The horizontal flaps (65a, 65b) can be set to an inwardly blowing state where the direction of air blown out through the air outlets (62a, 62b) is on the suction opening (61) side relative to the vertically downward direction.

Description

Specification

Ceiling-mounted air conditioner

Technical field

TECHNICAL FIELD [0001] The present invention relates to a ceiling-mounted air conditioner, and more particularly to a ceiling-mounted air conditioner in which a plurality of air outlets are formed outside an inlet.

Background art

[0002] A conventional ceiling-mounted air conditioner includes a casing in which an air flow path is formed, a blower fan and a heat exchanger provided in the casing, and a decorative panel provided on the lower surface of the casing. I have. The decorative panel is formed with an inlet port that communicates with the air flow path and a plurality of air outlets that are arranged outside the suction port and communicate with the air flow path. A horizontal flap that can rotate around the longitudinal axis of the air outlet is disposed at each air outlet (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 2003-214696

Disclosure of the invention

[0003] In the above-described ceiling-mounted air conditioner, the horizontal flap arranged at the air outlet is variable within an angle range in which the direction of air blown out through the air outlet is directed to the side opposite to the inlet rather than vertically downward The air blowing direction is controlled to control the air blowing direction.

However, in recent years, there has been a strong demand for improving indoor comfort. Accordingly, in ceiling-mounted air conditioners, it is desired to control the direction of air blown from the air outlet in various ways. It is rare.

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to control the blowing direction of air blown out in a variety of ways in a ceiling-mounted air conditioner in which a plurality of air outlets are formed outside the inlet.

A ceiling-mounted air conditioner according to a first aspect of the present invention is a casing in which an air flow path is formed, a blower fan provided in the casing, a heat exchange ^^ provided in the casing, And a decorative panel provided on the lower surface. The blower fan After inhaling air into the air channel, air is blown out from the air channel. The heat exchanger performs heat exchange of air flowing in the air flow path. The decorative panel is formed with a suction port that communicates with the air flow path and a plurality of air outlets that are arranged outside the suction port and communicate with the air flow path. Adjustment blades are arranged. The wind direction adjusting blade can be in an inward blowing state in which the blowing direction of the air blown out through the outlet is directed to the inlet side rather than vertically downward.

In this ceiling-mounted air conditioner, the wind direction adjusting blades can be blown inward, so that the blowout force is in a state where the blown-out air is immediately sucked from the suction port (that is, a short circuit state). Compared to the case where the wind direction adjusting blade can only be operated in the outward blowing state as in the conventional case, the blowing direction of the blown out air can be controlled in various ways. This can enhance indoor comfort.

A ceiling-mounted air conditioner according to a second aspect of the present invention is the ceiling-mounted air conditioner according to the first aspect of the present invention, wherein the airflow is adjusted inward by rotating the wind direction adjusting blade by 90 degrees or more.

The ceiling-mounted air conditioner according to the third invention is the ceiling-mounted air conditioner according to the first or second invention, and functions as a heater for heating the air flowing in the air flow path. When the heating operation is started, a quick warming operation, which is an operation in which at least one of the airflow direction adjusting blades is blown inward, is performed.

In this ceiling-mounted air conditioner, when a heating operation such as a heating operation is started, a quick heating operation that is an operation in which at least one of the airflow direction adjusting blades is in an inward blowing state can be performed. Here, the quick warming operation means, for example, that at least one of the wind direction adjusting blades is in an inward blowing state in a state where the heat exchanger functions as a heater for heating the air flowing in the air flow path. At least one of the air outlets is operated in a short circuit state, so that the air blown from the air outlet after being heated in the heat exchange ^^ This is an operation that quickly warms the temperature of the air blown from the outlet. In this ceiling-mounted air conditioner, when the heating operation is started by performing such a quick heating operation, It is possible to quickly warm the temperature of the air that is blown off, and it is possible to suppress the cold air that is blown out from the blowout outlet from spreading into the room during the rapid heating operation.

[0005] A ceiling-mounted air conditioner according to a fourth aspect of the present invention is the ceiling-mounted air conditioner according to any of the first to third aspects of the present invention, wherein the cooler cools the air flowing in the air flow path. When the cooling operation that makes the heat exchange function is finished, the heat drying operation, which is an operation in which at least one of the airflow direction adjusting blades is blown inward, is performed.

In this ceiling-mounted air conditioner, when a cooling operation such as a cooling operation or a dehumidifying operation is finished, a heat drying operation, which is an operation in which at least one of the airflow direction adjusting blades is blown inward, is performed. Can do. Here, the heat-drying operation is, for example, in a state where only air is blown by a blower fan, or in a state where the heat exchanger functions as a heater that heats air flowing in the air flow path. By operating at least one of the adjusting blades in the inward blowing state, at least one of the air outlets is operated in a short circuit state, so that the air blown from the air outlet is immediately sucked from the air inlet. Thus, in the cooling operation, it is an operation to remove the condensed water adhering to the surface of the heat exchanger. In this ceiling-mounted air conditioner, by performing such heat exchange drying operation, it is possible to keep clean by suppressing generation of musty odor and the like in heat exchange ^^. During the alternating drying operation, it is possible to prevent the slightly warm air that is blown out from spreading into the room.

[0006] A ceiling-mounted air conditioner according to a fifth aspect of the present invention is the ceiling-mounted air conditioner according to any of the first to fourth aspects of the present invention, wherein a part of the plurality of wind direction adjusting blades is generally provided with an outlet. It is possible to make it closed.

In this ceiling-mounted air conditioner, a part of the plurality of wind direction adjusting blades can be closed, so that it can be operated in a state where a part of the plurality of air outlets is closed.

A ceiling-mounted air conditioner according to a sixth aspect of the present invention is the ceiling-mounted air conditioner according to any of the first to fifth aspects of the present invention, wherein the flow path area is changed to change the flow area of the air flow path. A mechanism is further provided.

Since this ceiling-mounted air conditioner further includes a flow path area changing mechanism, It is possible to distribute the flow rate of the air blown out from each outlet.

[0007] A ceiling-mounted air conditioner according to a seventh aspect of the invention is the ceiling-mounted air conditioner according to the sixth aspect of the invention, wherein the flow path area changing mechanism is provided in a rotatable state in the air flow path. With a baffle plate.

In this ceiling-mounted air conditioner, the flow path area changing mechanism has a baffle plate that is provided in a rotatable state in the air flow path. Therefore, by adjusting the rotation angle of the baffle plate. , Each outlet force The flow rate of the blown air can be distributed.

Brief Description of Drawings

FIG. 1 is a schematic configuration diagram of an air conditioner employing a utilization unit as an embodiment of a ceiling-mounted air conditioner according to the present invention.

FIG. 2 is an external perspective view (ceiling is omitted) of a utilization unit as an embodiment of a ceiling-mounted air conditioner according to the present invention.

FIG. 3 is a schematic cross-sectional view of a utilization unit, corresponding to the AA cross section of FIG.

FIG. 4 is a schematic plan view of the utilization unit in a state where the top plate is removed and viewed from above.

FIG. 5 is a schematic plan view of the decorative panel as seen from above (filter is omitted).

FIG. 6 is a schematic cross-sectional view of the utilization unit, corresponding to the BB cross section of FIG.

7 is a diagram showing (a) a flap in a closed state, (b) a flap in an outward blowing state, and (c) a flap in an inward blowing state, corresponding to the CC cross section of FIG. .

FIG. 8 is a control block diagram of the air conditioner.

FIG. 9 is a flowchart of heat exchange drying operation.

[Fig. 10] A schematic cross-sectional view of a use unit in heat drying operation or quick heating operation,

FIG.

FIG. 11 is a flowchart of rapid heating operation.

[Fig. 12] Fig. 12 is a schematic plan view (filter is omitted) of the decorative panel of Modification 2 in which the upward force is also seen.

FIG. 13 is a schematic cross-sectional view of a utilization unit in a one-side closed state according to Modification 2 and corresponds to FIG.

FIG. 14 is a schematic cross-sectional view of a utilization unit in a quick warm-up operation with a one-side closed state according to Modification 2, corresponding to FIG. FIG. 15 is a schematic plan view of the utilization unit in a state where the top plate of Modification 3 is removed and viewed from above.

FIG. 16 is a schematic cross-sectional view of a utilization unit of Modification 3 and corresponds to the BB cross section of FIG.

FIG. 17 is a perspective view showing a structure of a flow path area changing mechanism of a third modification.

FIG. 18 is a schematic plan view of the utilization unit in a state where the top plate is removed in the flow distribution state of Modification 3 when the upward force is seen.

FIG. 19 is a schematic cross-sectional view of a utilization unit in a rapid warm-up operation with a flow rate distribution state according to Modification 3, corresponding to FIG.

FIG. 20 is a schematic plan view of the utilization unit in a state where the top plate of Modification 4 is removed and viewed from above.

FIG. 21 is a schematic cross-sectional view of a utilization unit of Modification 4 and corresponds to the BB cross section of FIG.

FIG. 22 is a schematic cross-sectional view of a utilization unit of Modification 4 and corresponds to the AA cross section of FIG.

FIG. 23 is a schematic plan view of the utilization unit in a state where the top plate of Modification 4 is removed and viewed from above.

Explanation of symbols

4 Use unit (ceiling-mounted air conditioner)

9 Makeup panel

41 Use side heat exchanger (Heat exchanger)

42 Indoor fan (fan)

50 casing

58 Air flow path

61 Suction port

62a, 62b Air outlet

65a, 65b Horizontal flaps (wind direction blades) are arranged

71, 76, 81 Channel area change mechanism 72, 77, 82 Baffle plate

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of a ceiling-mounted air conditioner according to the present invention will be described with reference to the drawings.

(1) Configuration of air conditioner

FIG. 1 is a schematic configuration diagram of an air conditioner 1 that employs a utilization unit 4 as an embodiment of a ceiling-mounted air conditioner according to the present invention. The air conditioner 1 is an apparatus mainly used for indoor air conditioning by performing a vapor compression refrigeration cycle operation. The air conditioner 1 mainly includes a heat source unit 2, a use unit 4, and refrigerant communication pipes 6 and 7 that connect the heat source unit 2 and the use unit 4. That is, the vapor compression refrigerant circuit 10 of the air conditioner 1 of the present embodiment is configured by connecting the heat source unit 2 and the utilization unit 4 via the refrigerant communication pipes 6 and 7. .

[0011] <Configuration of heat source unit>

The heat source unit 2 is installed outside a building such as a rooftop, for example. The heat source unit 2 is connected to the usage unit 4 via the refrigerant communication pipes 6 and 7, and constitutes a refrigerant circuit 10 with the usage unit 4.

Next, a schematic configuration of the heat source unit 2 will be described. The heat source unit 2 mainly includes a heat source side refrigerant circuit 10 a that constitutes a part of the refrigerant circuit 10. The heat source side refrigerant circuit 10a mainly includes a compressor 21, a four-way switching valve 22, a heat source side heat exchanger 23, an expansion valve 24 as an expansion mechanism, and closing valves 25 and 26. Yes.

In the present embodiment, the compressor 21 is a positive displacement compressor driven by a compressor motor 21a.

[0012] The four-way switching valve 22 is a valve for switching the direction of the refrigerant flow. During the cooling operation or the dehumidifying operation, the heat source side heat exchanger 23 serves as a cooler for the refrigerant discharged from the compressor 21. In addition, the discharge side of the compressor 21 and one end of the heat source side heat exchange (gas side end) are connected so that the use side heat exchange 41 (described later) functions as a heater for the refrigerant decompressed by the expansion valve 24. At the same time, the suction side of the compressor 21 is connected to the refrigerant communication pipe 7 (four-way switching in Fig. 1). (Refer to the solid line of the valve 22) During heating operation, the use side heat exchanger 41 (described later) serves as a cooler for the refrigerant discharged from the compressor 21, and the heat source side heat exchange 23 is reduced by the expansion valve 24. In order to function as a heater for the pressurized refrigerant, the discharge side of the compressor 21 and the refrigerant communication pipe 7 are connected, and the suction side of the compressor 21 and one end (gas side end) of the heat source side heat exchanger 23 are connected. It is possible to connect (refer to the broken line of the four-way switching valve 22 in FIG. 1).

[0013] The heat source side heat exchanger 23 is a heat exchanger that functions as a refrigerant cooler during cooling operation and functions as a refrigerant heater during heating operation. One end of the heat source side heat exchanger 23 is connected to the four-way switching valve 22, and the other end is connected to the refrigerant communication pipe 6. As described later, in the present embodiment, outdoor air sucked into the unit by the outdoor fan 27 is used as a heat source of the heat source side heat exchanger 23, but is not limited to air, and water is used as the heat source. You can use it as

The expansion valve 24 decompresses the refrigerant that is cooled in the heat source side heat exchanger 23 and sent to the use side heat exchanger 41 (described later) during the cooling operation and the dehumidifying operation, and the use side heat exchanger 41 ( This is an electric expansion valve that depressurizes the refrigerant that is cooled and sent to the heat source side heat exchanger 23 in a later-described manner.

[0014] In this embodiment, the heat source unit 2 includes an outdoor fan 27 for sucking outdoor air into the unit, supplying the air to the heat source side heat exchanger 23, and then discharging the outdoor air to the outdoor unit. It is possible to exchange heat between air and the refrigerant flowing through the heat source side heat exchange. The outdoor fan 27 is driven by a fan motor 27a.

The shut-off valves 25 and 26 are valves provided at connection ports with external equipment 'piping (specifically, refrigerant communication pipes 6 and 7). The shut-off valve 25 is connected to the heat source side heat exchanger 23. The closing valve 26 is connected to the four-way switching valve 22.

The heat source unit 2 is provided with various sensors. Specifically, the heat source unit 2 is provided with a suction pressure sensor 28 for detecting the suction pressure Ps of the compressor 21 and a discharge pressure sensor 29 for detecting the discharge pressure Pd of the compressor 21. . An outdoor temperature sensor 30 for detecting the temperature of the outdoor air flowing into the unit (that is, the outdoor temperature Ta) is provided on the outdoor air inlet side of the heat source unit 2. The outdoor temperature sensor 30 is also a thermistor. The heat source unit 2 controls the operation of each part constituting the heat source unit 2. A heat source side control unit 31 is provided. The heat source side control unit 31 includes a microcomputer, a memory, and the like provided for controlling the heat source unit 2, and transmits data to and from the use side control unit 46 (described later) of the use unit 4. It is now possible to exchange control signals, etc. via line 8a!

[0015] Configuration of usage units>

The utilization unit 4 is a ceiling-mounted air conditioner that is effective in one embodiment of the present invention, and is installed on the ceiling in the building. The utilization unit 4 is connected to the heat source unit 2 via the refrigerant communication pipes 6 and 7 and constitutes a part of the refrigerant circuit 10.

Next, a schematic configuration of the usage unit 4 will be described. The usage unit 4 mainly includes a usage-side refrigerant circuit 10 b that constitutes a part of the refrigerant circuit 10. The usage-side refrigerant circuit 10b mainly includes a usage-side heat exchanger 41.

The use side heat exchanger 41 is a heat exchanger that functions as a refrigerant heater during a cooling operation or a dehumidifying operation, and functions as a refrigerant cooler during a heating operation. The use side heat exchanger 41 has one end connected to the refrigerant communication pipe 6 and the other end connected to the refrigerant communication pipe 7.

[0016] In this embodiment, the usage unit 4 includes an indoor fan 42 for supplying indoor air after sucking indoor air into the unit and exchanging heat. It is possible to exchange heat with the refrigerant flowing through For this reason, the use-side heat exchanger 41 functions as an air cooler during a cooling operation or a dehumidifying operation and functions as an air heater during a heating operation.

Further, an indoor temperature sensor 45 that detects the temperature of indoor air flowing into the unit (that is, the indoor temperature Tr) is provided on the indoor air intake 61 side of the utilization unit 4. In the present embodiment, the room temperature sensor 45 is also a thermistor.

In addition, the usage unit 4 includes a usage-side control unit 46 that controls the operation of each unit constituting the usage unit 4. The usage-side control unit 46 includes a microcomputer, a memory, and the like provided for controlling the usage unit 4, and a remote controller (not shown) for operating the usage unit 4 individually. Control signals, etc., and control signals, etc. can be exchanged with the heat source side control unit 31 of the heat source unit 2. It is.

Next, the structure of the usage unit 4 including the above-described usage-side refrigerant circuit 10b, the indoor fan 42, and the like will be described with reference to FIGS. Here, FIG. 2 is an external perspective view (ceiling is omitted) of the utilization unit 4 as an embodiment of the ceiling-mounted air conditioner according to the present invention. FIG. 3 is a schematic cross-sectional view of the utilization unit 4 and corresponds to the AA cross section of FIG. FIG. 4 is a schematic plan view of the utilization unit 4 with the top plate 51 (described later) removed, and also viewed the upward force. FIG. 5 is a schematic plan view of the decorative panel 9 as viewed from above (the filter 64 is omitted). FIG. 6 is a schematic cross-sectional view of the utilization unit 4 and corresponds to the cross section BB in FIG. Fig. 7 shows (a) the horizontal flap 65b (described later) in the closed state, (b) the horizontal flap 65b (described later) in the outward blowing state, and (c) the horizontal flap 65b (described later) in the outward blowing state. FIG. 6 is a view corresponding to the CC cross section of FIG.

[0018] The air conditioner 1 of the present embodiment is a ceiling-mounted air conditioner installed in a ceiling-embedded form, and mainly includes a casing 5 that houses various components therein. The casing 50 mainly includes a box-shaped casing body 50a having a substantially rectangular shape in plan view and an open bottom surface, and a drain pan 50b attached to a lower portion of the casing body 50a so as to cover the opening on the bottom surface of the casing body 50a. And have.

The casing body 50a constitutes an upper surface and a side surface of the casing 50, and in the plan view, a substantially rectangular top plate 51 formed so that long sides and short sides are alternately continuous, and a top plate 51 Side plates 52, 53, 54, 55 extending downward from the peripheral edge of each of them. The side plates 52 and 54 correspond to the long sides of the top plate 51, respectively, and constitute a pair of opposite sides facing each other. The side plates 53 and 55 respectively correspond to the short sides of the top plate 51 and constitute a pair of opposite sides facing each other!

[0019] The drain pan 50b is a substantially rectangular plate-like member that forms the lower surface of the casing 50 and is formed so that long sides and short sides are alternately continuous in a plan view, like the top plate 51. It mainly has a drain pan body 56.

In the drain pan main body 56, a plurality of (here, two) suction openings 56a and 56b are formed in the plan view of the casing 50. The suction openings 56a and 56b are substantially opposite to the surface that divides the drain pan 50b into two in the longitudinal direction of the casing 50 in a plan view of the casing 50. The drain pan 50b is disposed at a substantially central position in the short side direction of the casing 50 in a plan view of the casing 50 in a plan view. The suction openings 56a and 56b are substantially circular holes in the present embodiment. Here, the casing long side direction refers to a direction along the side plates 52 and 54 of the casing 50. Further, the casing short side direction means a direction along the side plates 53 and 55 of the casing 50, and is orthogonal to the casing long side direction in a plan view of the casing 50. Of the suction openings 56a and 56b, the suction opening on the side plate 53 side is referred to as a suction opening 56a, and the suction opening on the side plate 55 side is referred to as a suction opening 56b.

[0020] Further, the drain pan body 56 is formed with a plurality of (here, two) blowing openings 56c and 56d in the plan view of the casing 50. In the plan view of the casing 50, the blower openings 56c and 56di are arranged at positions on both end sides (that is, the side plates 52 and 54 side) of the drain pan main body 56 in the casing short side direction. In the present embodiment, the blowout openings 56c and 56d are elongated cutout portions extending along two long sides of the drain pan main body 56 in a plan view of the casing 50. Of the outlet openings 56c and 56d, the outlet opening on the side plate 52 side is referred to as the outlet opening 56c, and the outlet opening on the side plate 54 side is referred to as the outlet opening 56d. Thus, by forming the blowout openings 56c and 56d in the drain pan body 56, the lower surface of the casing 50 is substantially surrounded by the blowout opening 56c and the inner surface of the side plate 52 along the casing long side direction. A rectangular hole and a substantially rectangular hole surrounded by the blowout opening 56d and the inner surface of the side plate 54 are formed.

[0021] An indoor fan 42 as a blower fan is disposed in the casing 50. In the present embodiment, the blower fan 42 is opposed to each of the suction openings 56a, 56b, and the rotation axis. O—Two indoor fans 42a and 42b arranged so that O extends vertically. The indoor fans 42a and 42b are turbo fans. The indoor fan 42a has a fan motor 43a provided at a position facing the suction opening 56a of the top plate 51, and an impeller 44a connected to the fan motor 43a and driven to rotate. Like the indoor fan 42a, the indoor fan 42b includes a fan motor 43b (not shown) provided at a position facing the suction opening 56b of the top plate 51, and a blade that is connected to the fan motor 43b and is driven to rotate. Car 44b (not shown). The impellers 44a and 44b can also blow out by lowering the force of the impellers 44a and 44b toward the outer peripheral side. [0022] Further, in the suction opening 56a of the drain pan 50b, a bell mouth 57a having a shape that widens downward from the vicinity of the tip on the suction opening 56a side of the impeller 44a is disposed. A bell mouth 57b having a shape that spreads downward from the vicinity of the tip on the suction opening 56b side of the impeller 44b is disposed.

Further, in the casing 50, the use-side heat exchanger 41 is disposed along the two long sides of the casing 50 in a plan view of the casing 50. In the present embodiment, the usage-side heat exchanger 41 includes a usage-side heat exchanger 41a extending along the side plate 52 of the casing 50 between the outlet opening 56c and the casing fans 42a and 42b along the side plate 52, and the outlet opening 56d. And the use side heat exchange 41b extending along the side plate 54 of the casing 50 between the casing short sides of the indoor fans 42a and 42b. In the present embodiment, the use side heat exchanges 41 _a and 41 b extend in the vicinity of the side plate 53 to the position near the side plate 55 in a straight line. The use-side heat exchangers 41a and 41b extend from the inner surface of the top plate 51 of the casing 50 toward the upper surface of the drain pan 50b and substantially downward in the vertical direction. The use-side heat exchangers 41a and 41b are, for example, fin-and-tube heat exchangers using cross fins or laminated heat exchangers using corrugated fins. The usage-side heat exchangers 41a and 41b are connected to refrigerant pipes (not shown) for exchanging refrigerant with the refrigerant communication pipes 6 and 7 installed outside the casing 50. It is arranged to penetrate 50 side plates 52-55. In addition, the drain pan main body 56 is formed with drain receiving portions 56e and 56f that receive dew condensation water generated by condensation of moisture in the air in the use side heat exchanger 41. The drain receiving portions 56e and 56f have a substantially U-shaped cross section into which the lower ends of the use side heat exchangers 41a and 41b can be inserted, and are disposed below the use side heat exchangers 41a and 41b. .

Further, a decorative panel 9 is provided on the lower surface of the casing 50. The decorative panel 9 is a substantially rectangular member that is larger than the casing 50 (that is, the top plate 51 and the drain pan 50b) in plan view, and is a suction port that communicates with both of the two suction openings 56a and 56b of the casing 50. 61 and air outlets 62a and 62b communicating with the air outlets 56c and 56d of the casing 50 are formed. The air outlets 62a and 62b are elongated, substantially rectangular holes arranged so as to face the air outlets 56c and 56d in the vertical direction and along the long side of the decorative panel 9. It is. The suction port 61 is an opening disposed at a position sandwiched between the air outlet 62a and the air outlet 62b from both sides. That is, the air outlets 62a and 62b are disposed outside the inlet 61 in the plan view of the decorative panel 9. In addition, a cover panel 63 smaller than the opening size of the suction port 61 is disposed substantially at the center of the suction port 61, and substantial suction ports are formed on both sides of the cosmetic panel in the short side direction of the decorative panel. Yes. Further, a filter 64 is arranged above the force bar panel 63 of the suction port 61.

[0024] In this way, the air flow path 58 leading to the suction openings 56a, 56b and the blowout openings 56c, 56d is formed in the gating 50, and the indoor fan 42 ( Specifically, indoor fans 42a and 42b) and use side heat exchangers 41 (specifically use side heat exchangers 41a and 41b) are arranged. The air flow path 58 includes a suction air flow path 59 that is a flow path portion from the suction openings 56a and 56b to the indoor fan 42, and a flow path from the indoor fan 42 to the blowout openings 56c and 56d. It consists of blown air channels 60a and 60b, which are parts. In such a usage unit 4, when the indoor fan 42 is operated, first, the indoor air passes through the suction port 61 and the filter 64 of the decorative panel 9 and the suction air flow channel 58 through the suction openings 56a and 56b. Inhaled by 59. Next, the air sucked into the intake air flow path 59 is blown out to the blown air flow paths 60a and 60b by the indoor fans 42a and 42b. Next, the air blown out blown out air flow path 60a, and 60b, the heat exchange is performed through the use-side heat exchanger 41 _a, 41b. Finally, the air that has passed through the use side heat exchangers 41a and 41b is blown into the room through the air outlets 62a and 62b of the decorative panel 9 as well as the air flow paths 60a and 60b.

[0025] Further, the air outlets 62a and 62b are provided with horizontal flaps 65a and 6 as wind direction adjusting blades in a state of being rotatable around an axis in the long side direction of the decorative panel (that is, the longitudinal direction of the air outlets 62a and 62b). 5b are arranged respectively. The horizontal flaps 65a and 65b are substantially rectangular blade members that are elongated in the longitudinal direction of the corresponding outlets 62a and 62b, and connecting pins 66 are provided at both ends in the longitudinal direction. The horizontal flaps 65a and 65b are rotatable about the longitudinal axis of the outlets 62a and 62b, respectively, with the connecting pin 66 being rotatably supported by the decorative panel 9. The connecting pin 66 on the side plate 55 side end of the horizontal flap 65a and the connecting pin 66 on the side plate 55 side end of the horizontal flap 65b are: They are connected by a connecting shaft 67 as a link mechanism extending in the short side direction of the decorative panel, and are rotated in synchronization with each other. The connecting pin 66 of the side plate 53 of the horizontal flap 65b is connected to the drive shaft of the flap motor 68. As a result, when the flap motor 68 is driven, the two horizontal flaps 65a and 65b rotate in synchronism with the connecting shaft 67 and the connecting pins 66 provided at both ends of the horizontal flaps 65a and 65b. / The rotation direction of the horizontal flaps 65a and 65b makes it possible to control the blowing direction of the air blown into the room from the outlets 62a and 62b.

[0026] The horizontal flaps 65a and 65b of the present embodiment can be set in three states (closed state, outward blowing state, and inward blowing state) according to various driving operations described later. Yes. Next, the force for explaining each state of the horizontal flaps 65a and 65b Here, the horizontal flap 65b will be described as an example, and the description of the horizontal flap 65a will be omitted.

First, in the closed state, as shown in FIG. 7 (a), the horizontal flap 65b is in a state in which the outlet 62b is substantially blocked, that is, the gap between the outlet 62b and the horizontal flap 65b is the smallest. In this embodiment, the inclination angle α (not shown in FIG. 7A) with respect to the horizontal plane of the horizontal flap 65b is 0 degree. In this closed state, the outer edge of the horizontal flap 65b is in contact with the recess 70 formed on the outer edge of the air outlet 62b. Also, the horizontal flap 65b has a flat lower surface that is integrated with the lower surface of the decorative panel 9 in this closed state.

[0027] Next, in the outward blowing state, as shown in FIG. 7 (b), the horizontal flap 65b has an air blowing direction through the air outlet 62b in which the air blowing direction is on the side opposite to the inlet 61 rather than vertically downward. The angle can be varied within the angle range (the inclination angle α with respect to the horizontal plane is in the range of 0 to 90 degrees). This outward blowing state is set by rotating the horizontal flap 65b in the R direction within an angle range of 90 degrees or less by the flap motor 68.

Next, in the inward blowing state, as shown in FIG. 7 (c), the horizontal flap 65b has an angular range in which the blowing direction of the air blown out through the outlet 62b is directed toward the inlet 61 rather than vertically downward. It is in a state that it can be varied within (inclination angle α with respect to the horizontal plane is within 90 ° or more). This inward blowing state is blown out from the outlets 62a and 62b. In order to realize such a short circuit state with certainty, it is a state that is set when driving in a state where the air immediately sucked into the inlet 61 (that is, a short circuit state). The inclination angle α of the horizontal flap 65b with respect to the horizontal plane can be varied within a range of 120 degrees or more. Similarly to the outward blowing state, this inward blowing state is set by rotating the horizontal flap 65b in the R direction by the flap motor 68. Such control of the horizontal flaps 65a and 65b is also performed by the use side control unit 46 described above.

[0028] The control unit 8 that controls the operation of the entire air conditioner 1 is configured by the use side control unit 46, the heat source side control unit 31, and the transmission line 8a that connects the control units 31 and 46. . As shown in FIG. 8, the control unit 8 is connected so as to be able to receive detection signals of various sensors 28 to 30 and 45, and various devices and valves 21 a based on these detection signals. 22, 24, 27 a, 43 a, 43 b, 68 are connected so that they can be controlled. Here, FIG. 8 is a control block diagram of the air conditioner 1.

(2) Operation of the air conditioner

Next, the operation of the air conditioner 1 of the present embodiment will be described.

In the operation of the air conditioner 1 of the present embodiment, the heat source side heat exchanger 23 is used as a cooler for the refrigerant discharged from the compressor 21, and the use side heat exchange is reduced in the expansion valve 24. (I.e., a cooling operation or a dehumidifying operation as a cooling operation that functions as a cooler that cools the air flowing in the air flow path 58, and the use-side heat exchanger 41 of the refrigerant discharged from the compressor 21) A heating operation as a cooling operation (that is, a heating device that cools the air flowing through the air flow path 58) and a heating operation that causes the heat source side heat exchanger 23 to function as a heating device for the refrigerant decompressed by the expansion valve 24. It can be carried out. Then, in the air conditioner 1, when the cooling operation or the dehumidifying operation is finished, the heat exchange drying operation for removing the condensed water adhering to the surface of the heat exchange in the cooling operation or the dehumidifying operation can be performed. In addition, when the heating operation is started, it is possible to perform a quick heating operation in which the temperature of the air blown out from the outlet is quickly increased.

[0029] Hereinafter, each operation of the air conditioner 1 will be described. The operation control of various devices in the following operations is performed by the control unit 8 (more specifically, the use of the air conditioner 1). The transmission line 8a) connects between the side control unit 46, the heat source side control unit 31, and the control units 31 and 46.

(A) Cooling operation, dehumidifying operation, and heat drying operation

During the cooling operation or the dehumidifying operation, the four-way switching valve 22 is in the state shown by the solid line in FIG. 1, that is, the discharge side of the compressor 21 is connected to one end of the heat source side heat exchanger 23 and the compression is performed. The suction side of the machine 21 is connected to one end of the use side heat exchanger 41 (specifically, the use side heat exchangers 41a and 41b). Further, the closing valve 25 and the closing valve 26 are opened, and the opening degree of the expansion valve 24 is adjusted.

When the compressor 21, the outdoor fan 27, and the indoor fan 42 (specifically, the indoor fans 42a and 42b) are operated in the state of the refrigerant circuit 10, the low-pressure refrigerant is sucked into the compressor 21 and compressed. And discharged as a high-pressure refrigerant. This high-pressure refrigerant is sent to the heat source side heat exchanger 23 via the four-way switching valve 22, and is cooled by exchanging heat with the outdoor air supplied by the outdoor fan 27. The high-pressure refrigerant cooled in the heat source side heat exchange is reduced in pressure by the expansion valve 24 to become a low-pressure refrigerant, and then sent to the utilization unit 4 via the closing valve 25 and the refrigerant communication pipe 6. .

Then, the low-pressure refrigerant decompressed by the expansion valve 24 and sent to the usage unit 4 is sent to the use-side heat exchanger 41, and is passed through the suction port 61 of the decorative panel 9 by the indoor force indoor fan 42. Heat is exchanged with the air sucked into 58 and heated, and the air flowing through the air flow path 58 is cooled. Then, the air cooled in the use side heat exchanger 41 is blown out into the room through the blowout air passages 60a and 60b of the air flow passage 58 through the blowout ports 62a and 62b of the decorative panel 9. Here, since the horizontal flaps 65a and 65b arranged at the air outlets 62a and 62b are set so as to be blown out outward by the flap motor 68 (see FIG. 7 (b)), The air blown into the room through 62a and 62b is blown in the direction facing the anti-suction port 61 rather than vertically downward (see Fig. 3). Further, in the use side heat exchanger 41, moisture contained in the air cooled by exchanging heat with the refrigerant condenses and adheres to the surface as condensed water. The condensed water that has flowed down the surface of the use side heat exchanger 41 is received by the drain receiving portions 56e and 56f of the drain pan 50b disposed below the use side heat exchanger 41. [0031] Then, the low-pressure refrigerant heated in the use side heat exchanger 41 is sent to the heat source unit 2 via the refrigerant communication pipe 7, and via the closing valve 26 and the four-way switching valve 22, Again, it is sucked into the compressor 21.

Next, an operation when the cooling operation and the dehumidifying operation are finished will be described. In cooling operation or dehumidifying operation, the refrigerant and air exchange heat, so that part of the condensed water adhering to the surface of the use-side heat exchanger 41 remains without flowing down to the drain receiving portions 56e and 56f. As a result, moldy smell may be generated. For this reason, it is desirable to remove the condensed water adhering to the surface of the use side heat exchanger 41 when the cooling operation or the dehumidifying operation is finished. Therefore, in the present embodiment, when the cooling operation or the dehumidifying operation is finished, the operation is performed in a state where the horizontal flaps 65a and 65b are set in the inward blowing state (see FIG. 7 (c)) by the flap motor 68. The heat exchange drying operation is performed.

This heat exchange drying operation will be described with reference to FIG. Here, FIG. 9 is a flowchart of heat drying operation.

First, in step S1, it is determined whether or not a command is issued to end the cooling operation or the dehumidifying operation. If there is a command to end the cooling operation or the dehumidifying operation, the process proceeds to step S2.

Next, in step S2, the flap motor 68 is operated so that the horizontal flaps 65a and 65b set in the outward blowing state are in the inward blowing state, and the compressor 21 is stopped. As a result, the refrigerant circuit 10 is in a blowing operation state in which the refrigerant does not circulate and heat exchange between the air and the refrigerant is not performed in the use-side heat exchange. The air blown out through the air outlets 62a and 62b is immediately drawn through the air inlet 61 (ie, short circuit kit state) (see FIG. 10). Here, FIG. 10 is a schematic cross-sectional view of the utilization unit 4 in the heat exchange drying operation or the quick heating operation (described later) of the present embodiment, and corresponds to FIG.

[0033] By such operation control, the air flowing through the air flow path 58 is not cooled in the usage-side heat exchanger 41, and thus adheres to the surface of the usage-side heat exchanger 41 during cooling operation or dehumidification operation. Heat drying that removes the surface force of the heat exchanger 41 on the use side by re-evaporating the condensed water Driving will be started. Further, since this heat-drying operation is an operation accompanied by a blowing operation state, the air flowing through the air flow path 58 is not cooled and is blown through the outlets 62a and 62b in a slightly warm state. Since the air outlets 62a and 62b are operated in a short circuit state, it is possible to prevent the warm air from spreading out into the room even when the air from the air outlets 62a and 62b is also blown out.

Then, in step S3, it is determined whether or not the heat drying operation end condition has been reached. Here, the end condition of the heat exchange drying operation can be, for example, the time when a predetermined time has passed by a timer. In this case, after the heat-drying operation in step S2 is performed for a predetermined time, the heat-drying operation in step S4 is terminated.

[0034] (B) Rapid heating operation and heating operation

First, the operation when starting the heating operation will be described. Immediately after the heating operation is started, the refrigerant pressure (that is, the discharge pressure Pd) on the discharge side of the compressor 21 where the temperature of the outdoor (that is, the equipment and pipes constituting the refrigerant circuit 10) is low should be sufficiently increased. As a result, the air flowing through the air flow path 58 in the use-side heat exchanger 41 is not sufficiently heated even if heat is exchanged with the refrigerant until the discharge pressure Pd becomes high to some extent, and remains in a cold state. There is a risk of being blown out through the outlets 62a and 62b. For this reason, it is desirable to increase the discharge pressure Pd as soon as possible when starting the heating operation. Therefore, in the present embodiment, when the heating operation is started, the operation is performed in a state in which the horizontal flaps 65a and 65b are set in the inward blowing state (see FIG. 7 (c)) by the flap motor 68. Make sure to perform quick warm-up.

This rapid heating operation and the subsequent heating operation will be described with reference to FIG.

Here, FIG. 11 is a flowchart of the rapid warm-up operation.

First, in step S 11, it is determined whether or not a command is issued to start heating operation. If there is a command to start the heating operation, the process proceeds to step S12.

Next, in step S12, in the refrigerant circuit 10, the four-way switching valve 22 is in the state indicated by the broken line in FIG. 1, that is, the discharge side of the compressor 21 is connected to the usage side heat exchanger 41 (specifically, the usage side Side heat exchangers 41a and 41b), and the suction side of the compressor 21 is heated. Connected to one end of the source side heat exchanger 23. Open the closing valve 25 and the closing valve 26, and keep the expansion valve 24 in a state in which the opening degree is adjusted. In the utilization unit 4, the flap motor 68 is operated so that the horizontal flaps 65a and 65b set in the outward blowing state are in the inward blowing state.

When the compressor 21, the outdoor fan 27, and the indoor fan 42 (specifically, the indoor fans 42a and 42b) are operated in the state of the refrigerant circuit 10, low-pressure refrigerant is sucked into the compressor 21. The refrigerant is compressed and discharged as a high-pressure refrigerant, and is sent to the utilization unit 4 via the four-way switching valve 22, the closing valve 26 and the refrigerant communication pipe 7.

Then, the high-pressure refrigerant sent to the usage unit 4 is heated in the usage-side heat exchanger 41 from the room by the indoor fan 42 through the inlet 61 of the decorative panel 9 into the air flow path 58 and heat. It is cooled by exchanging, and the air flowing in the air flow path 58 is heated. However, as described above, immediately after the heating operation is started, the discharge pressure Pd is not sufficiently increased, so that the air flowing through the air flow path 58 is hardly heated, and each of the blown air flow paths of the air flow path 58 is not heated. The air is blown into the room through the air outlets 62a and 62b of the decorative panel 9 from 60a and 60b.

[0037] The high-pressure refrigerant cooled in the heat exchange on the use side is sent to the heat source unit 2 via the refrigerant communication pipe 6, passes through the closing valve 25, and then decompressed by the expansion valve 24 to be low-pressure. It becomes a refrigerant. This low-pressure refrigerant flows into the heat source side heat exchanger 23 and is heated by exchanging heat with the outdoor air supplied by the outdoor fan 27 to become a low-pressure refrigerant, which passes through the four-way switching valve 22. Then, it is sucked into the compressor 21 again.

Here, in the use unit, the horizontal flaps 65a and 65b arranged at the outlets 62a and 62b are set so as to be blown out inward by the flap motor 68. The air blown into the room through the air is blown in the direction toward the inlet 61 rather than vertically downward. Thereby, in the usage unit 4, as described above, the air blown out from the air flow path 58 through the outlets 62a and 62b is immediately sucked through the inlet 61 (that is, a short circuit state) ( Since the air blown out from the air channel 58 through the outlets 62a and 62b is efficiently and repeatedly heated, the discharge pressure Pd is increased when starting the heating operation. At the same time, a rapid heating operation is started in which the temperature of the air blown out from the outlets 62a and 62b is quickly warmed. In addition, since this rapid warming operation is an operation involving a state where the discharge pressure Pd is low, the air flowing through the air flow path 58 is blown out through the outlets 62a and 62b in a cold state without being heated. Since the power outlets 62a and 62b are operated in a short circuit state, the cold air blown out from the outlets 62a and 62b can be prevented from spreading into the room! .

[0038] Next, in step S13, it is determined whether or not an end condition for the rapid warm-up operation has been reached. Here, the condition for terminating the rapid warm-up operation can be, for example, the time when a predetermined time has elapsed by a timer. In this case, after performing the quick heating operation in step S12 for a predetermined time, the process proceeds to the heating operation in the next step S14. In addition, as a condition for ending the rapid warming operation, the time when the discharge pressure Pd reaches a predetermined pressure can be used instead of the time. In this case, after the rapid heating operation in step S12 is performed until the discharge pressure Pd reaches a predetermined pressure, the process proceeds to the heating operation in the next step S14. Note that the state quantity for determining whether or not the discharge pressure Pd has reached the predetermined pressure is not limited to the discharge pressure Pd. For example, the refrigerant temperature on the discharge side of the compressor 21 or the use side heat exchanger The temperature of the refrigerant in 41 may be used.

[0039] In step S14, the flap motor 68 is operated so that the horizontal flaps 65a and 65b set in the inward blowing state are in the outward blowing state (see Fig. 7 (b)). To. As a result, in the usage unit 4, the air blown into the room through the air outlets 62a and 62b is blown in the direction facing the anti-suction port 61 rather than vertically downward (see FIG. 3). Transition to heating operation.

(3) Features of the air conditioner

The air conditioner 1 of the present embodiment, particularly the utilization unit 4, has the following characteristics (A)

In the utilization unit 4 as the ceiling-mounted air conditioner of the present embodiment, the horizontal flaps 65a and 65b as the wind direction adjusting blades can be in the inward blowing state (see FIG. 7 (c)). , Operation in a short circuit state becomes possible, Compared to the case where the flat flap is in the outward blowing state (see Fig. 7 (b)), it is possible to control the blowing direction of the air blown from the outlets 62a and 62b in various ways. This can improve indoor comfort.

[0040] For example, when a heating operation such as a heating operation is started, a quick warming operation that is an operation in which the horizontal flaps 65a and 65b are blown inward can be performed. In addition, the temperature of the air blown out from the air outlets 62a and 62b can be quickly warmed, and the cold air blown out from the air outlets 62a and 62b can be prevented from spreading into the room during the fast heating operation.

In addition, when cooling operation such as cooling operation or dehumidifying operation is completed, the heat drying operation, which is the operation in which the horizontal flaps 65a and 65b are blown inward, can be performed. In addition to suppressing the generation of musty odor, etc., it can be kept clean, and it is possible to suppress the slightly warm air blown out from the outlets 62a and 62b during the heat drying operation.

[0041] (B)

In the utilization unit 4 of the present embodiment, the horizontal flaps 65a and 65b are turned inward by rotating 90 degrees or more. The horizontal flaps 65a and 65b have a flat lower surface that is integrated with the lower surface of the decorative panel 9 in the closed state (see FIG. 7A). For this reason, even when the horizontal flaps 65a and 65b are turned inward by turning 90 degrees or more, the air blown out from the outlets 62a and 62b is directed smoothly toward the inlet 61. As a result, the short circuit state is easily obtained in the above-mentioned rapid heating operation and heat drying operation.

(5) Modification 1

In the heat-drying operation of the above-described embodiment, in step S2, the flap motor 68 is operated so that the horizontal flaps 65a and 65b set in the outward blowing state are in the inward blowing state, and the compressor 21 Is stopped so that there is no circulation of the refrigerant in the refrigerant circuit 10 so that heat exchange between the air and the refrigerant is not performed in the use side heat exchange, but the compressor 21 is stopped. Without changing the four-way selector valve 22 to the state shown by the broken line in FIG. 1, the refrigerant circulation direction in the refrigerant circuit 10 is the same as in the heating operation. By doing so, it is possible to heat the air flowing in the air flow path 58 in the use side heat exchanger 41 to promote drying of the use side heat exchanger 41.

[0042] Since the heat exchange drying operation in the present modification is an operation accompanied by the heating operation state, the air flowing through the air flow path 58 is in a state of being warmer than the heat exchange drying operation in the above-described embodiment. Force to be blown out through the air outlets 62a and 62b Even in this case, since the air outlets 62a and 62b are operated in a short circuit state, the warm air blown out from the air outlets 62a and 62b is indoors. It is now possible to suppress the spread to

(6) Modification 2

In the utilization unit 4 of the above-described embodiment and modification 1, the horizontal flap 65a and the horizontal flap 65b are connected by the connecting shaft 67, and are rotated and driven in synchronization with each other by the single flap motor 68. As shown in FIG. 12, a flap motor 68a, 68b may be provided for each horizontal flap 65a, 65b. Here, FIG. 12 is a schematic plan view of the decorative panel 9 of the present modification as viewed from above (filter 64 is omitted).

[0043] In the air conditioner 1 including the utilization unit 4 of the present modification, the flap motor 68a and the flap motor 68b can be controlled separately in consideration of the functions of the above-described embodiment and modification 1. Therefore, for example, as shown in FIG. 13, with regard to the air outlet 62a, in the one-side closed state in which the horizontal flap 65a is in the outward blowing state and the horizontal flap 65b is in the closed state, cooling operation or dehumidification is performed. Operation or heating operation can be performed. Here, FIG. 13 is a schematic cross-sectional view of the utilization unit 4 in the one-side closed state of the present modification, and corresponds to FIG.

In this case, since the outer edge of the horizontal flap 65b in the closed state is in contact with the recess 70 formed on the outer edge of the B outlet 62b, it flows out through the outlet 62b. The amount of air to be done can be made very small.

[0044] In addition, in the air conditioner 1 provided with the use unit 4 of the present modification, the following rapid heating operation can be performed using the above-described one-side closed state. Specifically, in the quick warm-up operation of the above-described embodiment or modification 1, in step S12, the flap motor 68 is operated so that both the horizontal flap 65a and the horizontal flap 65b are in the inward blowing state. However, for example, as shown in FIG. 14, the flap motor 68a is operated so that only the horizontal flap 65a as a part of a plurality of wind direction adjusting blades is in the inward blowing state. Close. Here, FIG. 14 is a schematic cross-sectional view of the utilization unit 4 in the rapid heating operation with the one-side closed state of the present modification, and corresponds to FIG.

As a result, air is not blown out from the air outlet 62b, and cold air is blown out. The air outlet is only the air outlet 62a, so that it is possible to further suppress the cold air from spreading into the room during the rapid heating operation. Become! /

(7) Modification 3

In the use unit 4 of the above-described embodiment and modification examples 1 and 2, in the state where both the horizontal flaps 65a and 65b are opened (that is, the closed state such as the outward blowing state and the inward blowing state) Cannot actively distribute the flow rate of the air blown out from the air outlet 62a and the air outlet 62b.For example, as shown in FIGS. By providing the flow path area changing mechanism 71 for changing the flow area of the blown air flow paths 60a, 60b), the air flow blown out from the blow outlet 62a and the blow outlet 62b is actively distributed. You may be able to do that. More specifically, the flow path area changing mechanism 71 is arranged at both ends of the outlet openings 56c, 56d of the drain pan 50b in the casing long side direction, and is arranged so that the upper surface of the drain pan 50b can slide in the casing long side direction. The baffle plate 72, a drive roller 74 that slides the baffle plate 72, and a baffle plate motor 73 that rotates the drive roller 74 are provided. In such a flow path area changing mechanism 71, the baffle plate 72 is slid in the T direction so as to block a part of each of the outlet openings 56c and 56d by rotating the drive roller 74 in the S direction by the baffle plate motor 73. Thus, the flow area of the air blown from the air outlet 62a and the air outlet 62b can be actively distributed by changing the flow passage area of each of the air outlet channels 60a and 60b. Here, FIG. 15 is a schematic plan view of the utilization unit 4 in a state in which the top plate 51 of the present modification is removed and also viewing the upward force. FIG. 16 is a schematic cross-sectional view of the utilization unit 4 of the present modification, corresponding to the cross section BB in FIG. FIG. 17 is a perspective view showing the structure of the flow path area changing mechanism 71 of this modification (shown as an example of the arrangement on the side plate 53 side of the blowout opening 56d). [0046] In the air conditioner 1 including the utilization unit 4 of the present modification, in addition to the functions of the above-described embodiment and Modifications 1 and 2, each of the blown air flow paths 60a and 60b is performed by the flow path area changing mechanism 71. 3 and 18, for example, as shown in FIGS. 3 and 18, both the outlet 62a and the outlet 62b are in an outward blowing state, and the outlet opening 56d side is obstructed. The cooling operation, the dehumidifying operation or the heating operation can be performed in the flow distribution state in which the plate 72 is slid in the T direction. Here, FIG. 18 is a schematic plan view of the utilization unit 4 in a state in which the top plate 51 is removed in the flow rate distribution state of the present modification, in which the upward force is also viewed.

In this case, the flow rate of air blown through the outlet 62b can be made smaller than the flow rate of air blown through the outlet 62a, so that the air flow distribution in the room can be improved. This can increase the comfort in the room. In addition, since the baffle plate 72 in the present modification is configured by a punching metal having a plurality of holes 72a, air flows also in the portion of the blown air flow path 60b that is blocked by the baffle plate 72. Since air is secured to some extent, air is also blown out to some extent from the edge of the decorative panel long side of the air outlet 62b.

[0047] In addition, in the air conditioner 1 provided with the use unit 4 of the present modification, the following rapid heating operation can be performed using the above-described flow distribution state. Specifically, in the quick warm-up operation of the above-described embodiment or modification 1, in step S12, both the horizontal flap 65a and the horizontal flap 65b are brought into an inward blowing state, or the modification 2 described above. In rapid operation, the force that causes the horizontal flap 65a to be inwardly blown and the horizontal flap 65b to be closed in step S12, for example, as shown in FIG. 18 and FIG. The flap 65a is in the inward blowing state, the horizontal flap 65b is in the outward blowing state, and the flow distribution state is such that the baffle plate 72 on the blowing opening 56d side is slid in the T direction. Here, FIG. 19 is a schematic cross-sectional view of the utilization unit 4 in the rapid heating operation with the flow rate distribution state of the present modification, and corresponds to FIG.

[0048] Thereby, the quick heating operation is performed only by the air blown from the blowout port 62a, and the flow rate of the air blown out from the blowout port 62b is reduced, so that the air is cooled during the fast heating operation. Heating operation can be performed while suppressing the spread of fresh air into the room

(8) Modification 4

In the utilization unit 4 of Modification 3 described above, as a flow path area changing mechanism, as shown in FIGS. 15 to 18, the baffle plate 72 is slid in the T direction so as to block a part of each of the outlet openings 56c and 56d. Is provided with a flow path area changing mechanism 71 that changes the flow area of the air flow path 58 (specifically, the blown air flow paths 60a and 60b). However, the present invention is not limited thereto, and a flow path area changing mechanism having a baffle plate provided in a rotatable state in the air flow path 58 (specifically, the blown air flow paths 60a and 60b) is provided. Moyo!

[0049] For example, the flow path area changing mechanism 76 shown in FIGS. 20 and 21 is arranged at both ends of each of the outlet openings 56c and 56d, and is arranged to be rotatable around an axis facing the casing short side direction. The baffle plate 77 and a baffle plate motor 78 that rotationally drives the baffle plate 77 are provided. In such a flow path area changing mechanism 76, the baffle plate 77 is blocked by the baffle plate 77 by rotating the baffle plate 77 in the U direction by the baffle plate motor 78, thereby blocking each of the blowout openings 56c and 56d. The flow area of the air blown out from the outlet 62a and the outlet 62b can be positively changed by changing the flow area of the outlet air passages 60a and 60b. Here, FIG. 20 is a schematic plan view of the utilization unit 4 with the top plate 51 of the present modification removed, as viewed from above. FIG. 21 is a schematic cross-sectional view of the utilization unit 4 of the present modification, and corresponds to the BB cross section of FIG.

Further, the flow path area changing mechanism 81 shown in FIG. 22 and FIG. 23 includes a baffle plate 82 that is arranged so as to be rotatable around an axis in the casing long side direction of each of the outlet openings 56c, 56d, It has a baffle plate motor 83 that rotationally drives the baffle plate 82. In such a flow path area changing mechanism 81, the baffle plate 82 is rotated in the V direction by the baffle plate motor 83, thereby blocking the baffle plate 82 by a part of the blowout openings 56 c and 56 d, thereby By changing the flow passage area of the air flow passages 60a and 6Ob, it is possible to actively distribute the flow rate of the air blown from the blowout ports 62a and 62b. Here, FIG. 22 is a schematic cross-sectional view of the utilization unit 4 of the present modification, and corresponds to the AA cross section of FIG. FIG. 23 is a schematic plan view of the usage unit 4 with the top plate 51 of the present modification removed, as viewed from above. (9) Other

As mentioned above, although embodiment of this invention and its modification were demonstrated based on drawing, specific structure is not restricted to these embodiment and its modification, In the range which does not deviate from the summary of invention. It can be changed.

[0051] (A)

In the above-described embodiment and its modification, the example in which the present invention is applied to the air conditioner 1 in which one use unit 4 is connected to one heat source unit 2 has been described. The present invention is applied to an air conditioner in which a plurality of use units are connected to one heat source unit, or one or more use units are connected to a plurality of heat source units. The present invention may be applied to various types of air conditioners, such as applying the present invention to an air conditioner.

(B)

In the above-described embodiment and its modification, the force described in the example in which the present invention is applied to the use unit 4 having the decorative panel 9 in which the two outlets 62a and 62b are formed outside the suction port 61. Without limitation, for example, in a use utensil having a makeup panel having three or more outlets formed, for example, four outlets are formed outside the inlet of the decorative panel. The present invention may be applied.

Industrial applicability

[0052] By utilizing the present invention, in the ceiling-mounted air conditioner in which a plurality of air outlets are formed outside the air inlet, the air outlet force can be controlled in various ways. Become.

Claims

The scope of the claims

[1] A casing (50) having an air flow path (58) formed therein,

A blower fan (42) provided in the casing and configured to blow air out of the air flow path after sucking air into the air flow path;

A heat exchanger (41) provided in the casing for performing heat exchange of air flowing in the air flow path;

An inlet (61) provided on the lower surface of the casing and communicating with the air flow path, and a plurality of air outlets (62a, 62b) disposed outside the suction port and communicating with the air flow path are formed. A decorative panel (9) in which wind direction adjusting blades (65a, 65b) are arranged in a rotatable state at each of the air outlets,

The airflow adjusting blade can be in an inward blowing state in which the blowing direction of the air blown out through the blowout port is directed to the suction port side rather than directly below lead, the ceiling-mounted air conditioner (4) .

[2] The ceiling-mounted air conditioner (4) according to claim 1, wherein the inward blowing state is achieved by rotating the wind direction adjusting blades (65a, 65b) by 90 degrees or more.

[3] When starting a heating operation for causing the heat exchanger (41) to function as a heater for heating the air flowing in the air flow path (58), at least one of the wind direction adjusting blades (65a, 65b) The ceiling-mounted air conditioner (4) according to claim 1 or 2, wherein a quick-warming operation, which is an operation in which an air outlet is brought into the inward blowing state, is performed.

[4] When the cooling operation for causing the heat exchanger (41) to function as a cooler for cooling the air flowing in the air flow path (58) is terminated, at least one of the wind direction adjusting blades (65a, 65b) The ceiling-mounted air conditioner (4) according to any one of claims 1 to 3, wherein a heat exchange drying operation, which is an operation in which one is blown inward, is performed.

[5] The part of the plurality of wind direction adjusting blades (65a, 65b) may be in a closed state that substantially closes the outlet (62a, 62b). Ceiling-mounted air conditioner (4).

[6] The ceiling installation according to any one of claims 1 to 5, further comprising a flow path area changing mechanism (71, 76, 81) for changing a flow path area of the air flow path (58). Type air conditioner ( Four).

The flow path area changing mechanism (76, 81) has a baffle plate (77, 82) provided in a rotatable state in the air flow path (58). Ceiling-mounted air conditioner (4).