JP5750353B2 - Air conditioner - Google Patents

Description

  The present invention relates to a wind direction control device for an air conditioner.

  The air conditioner adjusts the indoor environment by circulating the air in the installed room to the heat exchanger, making it conditioned air by heating, cooling, dehumidification, etc., and blowing it into the room by a blower fan. In order to blow conditioned air from the indoor unit, a vertical wind direction plate is pivotally arranged to adjust the wind direction in the vertical direction, and a plurality of left and right angles that are adjustable in the horizontal direction of the outlet are adjustable for adjusting the wind direction in the horizontal direction. Wind direction plates are arranged at predetermined intervals.

  And the conditioned air by which the wind direction was controlled is ventilated to a predetermined | prescribed direction by combining and controlling the angle of an up-and-down wind direction board and a left-right wind direction. Among them, the vertical wind direction plate is indispensable for effectively cooling and heating the room by sending air downward slightly during the cooling operation and downwardly during the heating operation. However, during cooling operation, if cold air flows on one surface of the vertical air direction plate and no cold air flows on the other surface of the vertical air direction plate, a temperature difference occurs between one surface of the vertical air direction plate and the other surface. There was a problem that condensation occurred.

  Various measures have been taken to partially address these problems. Japanese Patent Application Laid-Open No. 2007-093092 is known as this type of prior art.

  Japanese Patent Laid-Open No. 2004-26883 is a second shaft that is rotatably supported below the first horizontal flap 21 of the outlet passage 33, has a blade length shorter than that of the first horizontal flap 21, and at least a portion thereof overlaps the first horizontal flap 21. Since the air is guided by the horizontal flap 22 so as to flow along the lower wing surface of the first horizontal flap 21, it is possible to prevent a temperature difference from occurring on the upper surface and the lower surface of the first horizontal flap 21 during the cooling operation, and to prevent condensation. An air conditioner that can prevent the above is described.

JP 2007-093092 A

  In patent document 1, in order to prevent dew condensation of the 1st horizontal flap 21, the 2nd horizontal flap 22 which is another parts is used, cost increases, and the 2nd horizontal flap 22 is the blower outlet of an air conditioner. Therefore, the air resistance increases.

  The problem to be solved by the present invention is to provide an air conditioner that suppresses dew condensation on the vertical wind direction plate while suppressing an increase in cost and an increase in air resistance.

The problems to be solved by the present invention include a housing having an air inlet and an air outlet, a heat exchanger disposed in the housing, and sucking indoor air from the air inlet and passing through the heat exchanger. A blower fan that blows air out of the air outlet, a casing that forms a blower passage from the blower fan to the air outlet, and an up-and-down airflow direction plate that is located in the air outlet, and the casing is below the blower passage A lower casing that is positioned, and an upper casing that is positioned above the air passage, and the vertical wind direction plate is an upstream wind direction plate, and a midstream wind direction plate that is positioned in the downstream direction of the blown air with respect to the upstream wind direction plate, A downstream wind direction plate located in the downstream direction of the blown air with respect to the middle flow direction plate, and a position between the upstream wind direction plate and the middle flow direction plate and directing the middle flow direction plate closer to the extension line of the lower casing. 1 song and midstream A second curved portion located between the direction plate and the downstream wind direction plate and directing the downstream wind direction plate away from the extension line of the lower casing. During cooling operation, the downstream wind direction plate is the upper casing. upward der than parallel to the extension line of is, during the cooling operation, the upstream louver is located on the extension of the upper casing, and the second curved portion is achieved by an acute angle than the first bending portion The

  According to the first aspect of the present invention, it is possible to provide an air conditioner that suppresses dew condensation on the vertical wind direction plate while suppressing dew condensation on the vertical wind direction plate while suppressing an increase in cost and an increase in air resistance.

The block diagram of the air conditioner of Example 1. FIG. The front view of the indoor unit of the air conditioner. The sectional side view of the indoor unit. The perspective view at the time of the operation stop of the indoor unit. The perspective view at the time of the air_conditionaing | cooling operation | movement of the indoor unit mainly. The perspective view at the time of heating operation of the indoor unit mainly. The enlarged view of the upper wind direction board rotation part of the indoor unit. The enlarged view of the upper wind direction board rotation part of the indoor unit. Sectional drawing of the blower outlet at the time of the air_conditioning | cooling and ventilation operation | movement of the indoor unit mainly. The enlarged view of the upper wind direction board rotation part of the air conditioner of Example 2. FIG. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 3. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditioning | cooling and ventilation operation | movement of the indoor unit mainly. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The perspective view of an upper wind direction board. The transmission part expanded sectional view of the same upper wind direction board. The perspective view of the wind direction piece of a same upper side wind direction board. The detail of the rotation axis | shaft part of the wind direction piece of an upper wind direction board. The shaft cover detailed drawing of an upper wind direction board. The transmission member detail drawing of an upper wind direction board. Procedure for assembling the transmission member of the upper wind direction plate. Procedure for assembling the upper wind direction plate into the housing. Removal procedure of the upper wind direction plate from the housing. The disassembled perspective view of the upper wind direction board of the indoor unit of the air conditioner of Example 4. FIG. The disassembled perspective view of the upper wind direction board of the indoor unit of the air conditioner of Embodiment 5. The front view of the indoor unit. FIG. 4 is a detailed view of a support member of the upper wind direction plate. Sectional drawing of the center support part of an upper wind direction board. Procedure for assembling the chassis of the central support. Sectional drawing of the indoor unit blower outlet explaining the air conditioner of Example 6. FIG. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 7. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditionaing | cooling operation of the indoor unit mainly. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 8. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditionaing | cooling driving | operation mainly of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. Sectional drawing of the blower outlet of the indoor unit of an air conditioner. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit.

  Hereinafter, embodiments of the present invention will be described.

  First, the overall configuration will be described with reference to FIGS. FIG. 1 is a configuration diagram of an air conditioner according to a first embodiment. FIG. 2 is a front view of the indoor unit of the air conditioner. FIG. 3 is a side sectional view of the indoor unit.

  In addition, although an Example demonstrates the wall-hanging type air conditioner which has a horizontally long blowing outlet, this invention is not limited to this, The ceiling embedding type | mold with a substantially rectangular blowing air channel or wall embedding Of course, the present invention can be easily applied to a shape, floor-standing type, vertical wall-mounted type or window type air conditioner, and the same effect can be exhibited.

  In this way, since the air conditioner is divided into various forms, there is a risk of misunderstanding if the name of the vertical wind direction plate, the left and right wind direction plate used in the horizontally long air conditioner is used as it is, In this specification, when the form of the air conditioner is not specified, a wind direction plate having a rotation axis in the longitudinal direction of the blowing air path leading to the outlet and deflecting the wind direction in a plane orthogonal to the rotation axis is mainly used. The wind direction plate, which has a rotation axis in a direction perpendicular to the longitudinal direction of the blowout air passage, and that the wind direction plate that deflects the wind direction in the longitudinal direction is called a sub wind direction plate, and the form of the air conditioner is, for example, When specifying as a wall-mounted air conditioner with a horizontally long outlet, the main wind direction plate is paraphrased as the vertical wind direction plate and the secondary wind direction plate as the left and right wind direction plates, depending on the form. Was made easy to obtain.

  The air conditioner 1 connects the indoor unit 2 and the outdoor unit 6 with a connection pipe 8 to air-condition the room. The indoor unit 2 attaches the unit frame 22 to the housing base 21, covers the unit frame 22 with the decorative frame 23, the lower panel 24, and the dew tray 35, and attaches the decorative panel 25 to the unit frame 22 in a detachable manner in the front. Configured. Further, during operation, the suction panel 251 in front of the decorative panel 25 is rotatable about the lower part as a fulcrum as shown in FIG.

  An upper air inlet 27 for sucking room air is provided above the indoor unit 2, and an air outlet 28 for blowing conditioned air from the indoor unit 2 into the room is provided below the indoor unit 2. The air outlet 28 can be opened and closed by the rotation of the upper wind direction plate 29 and the lower wind direction plate 29 'attached to the upper casing 280a and the lower casing 280b. In addition, the upper wind direction plate 29 and the lower wind direction plate 29 ′ blow the air flow indoors by controlling the air flow from the indoor unit 2 up and down.

  An upper filter 231 and a front filter 231 ′ are installed inside the decorative panel 25 and the upper air suction port 27 on the upper surface of the indoor unit 2, and are detachably attached to the unit frame 22. An indoor heat exchanger 33 composed of pipes and fins is disposed inside the upper filter 231 and the front filter 231 ′. The indoor heat exchanger 33 is disposed so as to surround the blower fan 311 having a substantially equal horizontal length. The blower fan 311 is disposed between the upper casing 280a and the lower casing 280b, and the rotation shaft of the blower fan 311 is connected to the blower motor.

  A blowing air path 280 is formed between the blower fan 311 and the air blowing port 28 by an upper casing 280a and a lower casing 280b, and left and right wind direction plates 285 are arranged in the blowing air path 280 at predetermined intervals in the left-right direction.

  As described above, the outer casing of the indoor unit 2 is formed by the casing 20 including the casing base 21, the unit frame 22, the decorative frame 23, the lower panel 24, and the like, and the decorative panel 25, the blower fan 311, Basic structures such as an upper filter 231, a front filter 231 ′, an indoor heat exchanger 33, a dew tray 35, a left and right wind direction plate 285, a suction panel 251, an upper wind direction plate 29, and a lower wind direction plate 29 ′ are attached to the room. Machine 2 is configured.

  In the back of the decorative panel 25, an electrical component part of the electrical component unit is provided. The control board of the electrical component unit is provided with a microcomputer, receives a signal sent from the remote controller 5 via the light receiving unit, and controls the operation of the air conditioner according to the signal. At this time, the operation mode can be confirmed by turning on and off the lamp of the display unit according to the operation mode.

  When the operation is started, the suction panel 251 of the decorative panel 25 is rotated forward with the lower portion as a fulcrum and inclined by a predetermined angle, and the upper front portion of the indoor unit 2 is opened. The upper wind direction plate 29 and the lower wind direction plate 29 ′ are rotated by being controlled by the microcomputer to open and close the air outlet 28 of the indoor unit 2. When the indoor unit 2 receives the operation signal from the remote controller 5, the outdoor unit 6 also operates. The refrigerant sent from the outdoor unit 6 circulates through the indoor heat exchanger 33 via the connection pipe 8. The blower motor connected to the blower fan 311 is driven in accordance with the operating state by microcomputer control.

  Next, the flow from the air suction to the blowout will be described. When the blower fan 311 rotates clockwise in FIG. 3, room air is sucked from the upper air suction port 27 on the upper surface and the opening (front air suction port 27 ′) of the decorative panel 25. Then, when the sucked airflow passes through the upper filter 231 and the front filter 231 ′, dust and the like are removed by the mesh of the upper filter 231 and the front filter 231 ′, and flows into the indoor unit 2.

  The airflow further flows into the indoor heat exchanger 33, and after heat exchange, the airflow is sucked into the blower fan 311. The airflow blown from the blower fan 311 passes through the left and right airflow direction plates 285 and the upper and lower airflow direction plates 29 and 29 'provided on the downstream side of the lower casing 280b, and is blown into the room with the airflow direction controlled. On the other hand, when stopping the operation, after the driving of the blower fan 311 is stopped, the suction panel 251 of the decorative panel 25 is rotated to close the opening at the upper front as shown by the dotted line in FIG. , 29 'are rotated to close the air outlet 28 as shown by the dotted line in FIG.

  In addition, a dew tray 35 is disposed below the indoor heat exchanger 33 and receives condensed water generated in the indoor heat exchanger 33 during cooling operation or dehumidifying operation. The condensed water collected in the dew tray 35 is discharged outside through the drain pipe 37. In this way, an air flow path is formed, and by driving the blower fan 311, room air is sucked from the upper air inlet 27 and the front air inlet 27 ′, and passes through the upper filter 231 and the front filter 231 ′. Then, after heat is exchanged in the indoor heat exchanger 33, the air is blown into the room from the air outlet 28.

  Next, the configuration of the upper wind direction plate that deflects the wind direction in the vertical direction will be described with reference to FIGS. 2, 6 (b), and 8 (b). FIG. 6 is a perspective view of the indoor unit mainly during heating operation, and FIG. 6B is a cross-sectional view of the outlet at that time. FIG. 8 is an enlarged view of the upper wind direction plate rotating portion of the indoor unit. (A) is mainly during the air blowing / weak heating operation, and (b) is mainly during the strong heating operation.

  The upper wind direction plate 29 includes a wind direction piece 291, a right transmission shaft cover 292, and a left transmission shaft cover 293, and the rotation shaft 29 a is connected to the rotation shaft portion 291 a of the wind direction piece 291 and the right transmission shaft cover 292 and the left transmission shaft cover. 293 is fixed by a shaft cover fixing screw 298. Further, the wind direction piece 291 has a shape in which the rotation shaft portion 291a and the wind direction surface 291d are connected by the wind shielding surface 291e.

  Supporting portions 24 a and 24 b are provided at both ends of the groove portion 24 c of the lower panel 24 that constitutes the casing 20, with the rotating shaft 29 a of the upper wind direction plate 29. A support shaft 24e is provided in the support portion 24a, and a drive motor 287 is provided in the support portion 24b. The upper wind direction plate 29 is suspended between them and attached to the housing 20. The driving force of the drive motor 287 is received and rotated by the rotation shaft 29 a of the upper wind direction plate 29 via the transmission member 296.

  The groove portion 24c of the lower panel 24 has a cylindrical concave surface centered on the position of the axis of the rotation shaft 29a when the upper wind direction plate 29 is attached to the housing 20, and the rotation shaft 29a is in the groove portion 24c. It can be turned without any trouble. Reference numeral 291b denotes a gap forming portion formed on the rotating shaft 29a, which holds the gap Gp between the rotating shaft 29a and the cylindrical concave surface of the groove 24c at a small value.

  Next, the operation of the upper wind direction plate that deflects the wind direction in the vertical direction will be described with reference to FIGS. FIG. 4 is a perspective view when the operation of the indoor unit is stopped, and FIG. 4B is a cross-sectional view of the outlet at that time. FIG. 5 is a perspective view mainly showing the indoor unit during cooling operation, and FIG. 5B is a cross-sectional view of the outlet at that time. FIG. 7 is an enlarged view of the upper wind direction plate rotating portion of the indoor unit, (a) is when stopped, and (b) is mainly during the air blowing operation.

  When the operation is stopped, as shown in FIG. 4, the suction panel 251, the upper wind direction plate 29, and the lower wind direction plate 29 ′ close the front air suction port 27 ′ and the air outlet port 28. In this state, the appearance of the indoor unit 2 of the air conditioner has a shape with less unevenness, does not disturb the indoor atmosphere, is easy to clean, and prevents dust from entering the indoor unit.

  At this time, when the portion of the rotating shaft 29a of the upper wind direction plate 29 is enlarged, as shown in FIG. 7A, the rotating shaft 29a is hidden by the lower wind direction plate 29 'and cannot be seen from the room at all. . As will be described later, the rotation shaft 29a is a U-shaped rotation shaft portion 291a connected to the wind direction surface 291d by a wind shielding surface 291e and a reverse U-shape portion of the rotation shaft portion 291a. A right-shaped right transmission shaft cover 292 and a left transmission shaft cover 293 are covered with a lid.

  The shaft cover fixing screw 298 for fixing the right transmission shaft cover 292 and the left transmission shaft cover 293 is hidden by the lower wind direction plate 29 'when the air conditioner is stopped, so that its inorganic appearance is not exposed indoors. , Does not disturb the indoor atmosphere. 6B and 8B, the upper wind direction plate 29 and the lower wind direction plate 29 ′ are opened. As the upper wind direction plate 29 rotates, the shaft cover fixing screw is opened. 298 moves to the groove 24c of the lower panel 24, is not visible from the room, and does not disturb the room atmosphere.

  In addition, as shown in FIG.4 (b), the rotating shaft 29a of the upper wind direction board 29 is located in the lower end of the upper casing 280a. Here, the lower end of the upper casing 280a does not only mean a portion in contact with the lower end of the upper casing 280a, but a lower end of the upper casing 280a so that the rotation shaft 29a can rotate. This includes the case where there is a gap between the rotary shaft 29a.

  During the cooling operation, as shown in FIGS. 5B and 7B, the upper wind direction plate 29 and the lower wind direction plate 29 ′ are opened, so that the shaft cover fixing screw 298 comes to a position where it can be seen from the room. Is directly under the air conditioner, the shaft cover fixing screw 298 is hidden by the lower wind direction plate 29 ′ and cannot be seen. If it comes to the position of the eyes Ey of the person looking away from the air conditioner and looking into the air conditioner The shaft cover fixing screw 298 can be seen from the inside of the room, but the upper wind direction plate 29 is also rotated. Therefore, the angle θs at which the U-shaped right transmission shaft cover 292 and left transmission shaft cover 293 are exposed to the room is It becomes very small and is almost invisible.

  As described above, it is difficult to find the shaft cover fixing screw 298 unless the user approaches the air conditioner and raises his head. For this reason, since the air conditioner can be used in the normal use range without seeing the fine irregularities of the rotating shaft portion 29a of the upper wind direction plate 29 both when the air conditioner is stopped and during operation, There is no visual noise that disturbs the atmosphere.

  Further, a hollow space is formed in the rotation shaft 29a by the inverted U-shaped rotation shaft portion 291a and the U-shaped right transmission shaft cover 292 and left transmission shaft cover 293. In this hollow space, the transmission member 296 that transmits the driving force to the upper wind direction plate 29 described in detail in the description of the third embodiment is housed, so that the complicatedly shaped portion of the transmission member 296 is not shown to the outside. I am doing so. In this way, by concealing the complicatedly shaped part of the transmission member 296 in the hollow part inside the rotation shaft 29a, the part visible from the outside becomes only a simple part, and the visual noise is reduced.

  Next, the flow of conditioned air in the groove will be described with reference to FIGS.

  During the cooling operation, the upper wind direction plate 29 and the lower wind direction plate 29 ′ are substantially parallel to the upper casing 280 a so that the wind shielding surface 291 e of the upper wind direction plate 29 and the lower wind direction plate 29 ′ are maximized. Then, it is rotated as shown in FIG. 5B, and the blown air flows as indicated by the black arrows. At this time, as shown in FIG. 7B, a slight amount passes through the slight gap Gp between the gap forming portion 291b provided on the rotation shaft 29a of the upper wind direction plate 29 and the groove portion 24c of the lower panel 24. The air blows out to the back surface of the wind direction surface 291d and the wind shielding surface 291e.

  The leaked blown air has a flow velocity that weakens when leaving the groove, flows almost along the back surface of the wind-shielding surface 291e with a flow close to natural convection, and flows parallel to the rotation shaft 29a when reaching the lowest portion of the back surface. To the left and right ends of the wind direction piece 291 while mixing little by little. At this time, the leaked blown air covers the back surface of the wind-shielding surface 291e with blown air having a low absolute humidity, and suppresses the occurrence of condensation on the back surface.

  At this time, the blown air is blown out from the air blowing port 28 like a jet at almost the same speed and direction as the air flowing in the portion near the air blowing port 28 of the upper casing 280a, and is separated from the wind direction surface 291d without diffusing much. Go straight into the room. For this reason, the wind direction surface 291d is less cooled by the blown air and is not cooled much. Therefore, the back surface of the wind direction surface 291d is not cooled so much, and the phenomenon of dew condensation caused by condensation of moisture in the air due to the indoor air touching the cooled portion is suppressed.

  Further, since the wind shield surface 291e is directly cooled by the blown air, the degree of cooling is large. However, as described above, the back surface of the wind shield surface 291e is covered with the leaked blowout air having a small absolute humidity, so that the phenomenon of condensation occurs. Is greatly suppressed.

  During the heating operation, the upper wind direction plate 29 and the lower wind direction plate 29 ′ send the blown air downward as much as possible to keep the feet warm, and the wind direction surface 291d of the upper wind direction plate 29 and the lower wind direction plate 29 ′ are substantially parallel. Then, the air is rotated as shown in FIG. 6B, and the blown-out air flows as indicated by black arrows. At this time, as shown in FIG. 8B, the wind direction piece 291 of the upper wind direction plate 29 is brought into contact with the groove 24c of the lower panel 24 and the vicinity of the intersection line of the upper casing 280a.

  As a result, there is almost no blown air that passes between the rotating shaft 29a of the upper wind direction plate 29 and the groove 24c of the lower panel 24 and leaks to the back surface of the wind direction surface 291d and the wind shield surface 291e, and the blown air is effectively removed. Can be sent in a downward direction. If the wind direction piece 291 of the upper wind direction plate 29 is not brought into contact with the groove 24c of the lower panel 24 and the vicinity of the intersection of the upper casing 280a due to various circumstances, the rotation shaft 29a of the upper wind direction plate 29 and the lower panel 24 are not contacted. The blown air leaks through the gaps 24c.

  However, since the groove portion 24 c is a cylindrical concave surface centered on the axis of the rotation shaft 29 a, the gap portion 291 b provided on the rotation shaft 29 a of the upper wind direction plate 29 and the groove portion 24 c of the lower panel 24 are arranged. The gap Gp is constant, and the amount of the blown-out air leaking through the slight gap Gp is small, so that there is no significant difference in the heating effect and the effect of sending the blown air near the feet.

  Next, another usage pattern of the upper wind direction plate will be described with reference to FIG. FIG. 9 is a cross-sectional view of the outlet of the indoor unit mainly during the cooling / air blowing operation, and FIG. 9B is an enlarged view of the upper wind direction plate rotating portion at that time.

  When operating without cold air, such as when blowing, the lower wind direction plate is rotated in a desired direction, and the wind direction surface of the upper wind direction plate is substantially parallel to the lower wind direction plate as shown in FIG. When it is rotated to the position, the blown air is compressed by the wind shield surface of the upper wind direction plate, sandwiched between the wind direction surface of the upper wind direction plate and the lower wind direction plate, and rectified into a parallel flow, as shown by the black arrow Flowing.

  In this way, after the flow is reduced, the flow is rectified into a parallel flow, whereby the blown air becomes a parallel flow with a high wind speed and reaches a farther distance. By adjusting the parallel direction created by the wind direction surface of the upper wind direction plate and the lower wind direction plate to an arbitrary direction, it is possible to send wind to a wide area in the room, and further power saving is required. It is highly effective as a method of obtaining a cool feeling.

  Next, the rotation axis of the upper wind direction plate of the air conditioner of Example 2 will be described with reference to FIG. FIG. 10 is an enlarged view of the upper wind direction plate rotating portion of the air conditioner of the second embodiment.

  As shown in FIG. 10, the air conditioner of Example 2 is provided with a plurality of gap forming portions on the rotating shaft of the upper wind direction plate, and the other parts are the same as those of Example 1. Thus, for example, by providing two gap forming portions as shown in FIG. 10, resistance to the blown air leaking from the gap between the pivot shaft of the upper wind direction plate and the groove portion of the lower panel doubles and leaks out. The amount of blown air is almost halved.

  Further, since a flow path wider than the gap can be formed between the gap forming portions, the pressure loss increases due to the labyrinth effect, the amount of blown air leakage can be further suppressed, and the short circuit is effectively suppressed.

  Next, the rotation axis of the upper wind direction plate of the air conditioner of Example 3 will be described with reference to FIGS. FIG. 11 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the third embodiment. FIG. 12 is an enlarged view of the rotating portion of the upper wind direction plate of the indoor unit mainly during the cooling / air blowing operation. FIG. 13 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit. FIG. 13A is a stop state and FIG. 13B is mainly a cooling / air blowing operation. FIG. 14 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit, (a) is mainly during the air blowing / weak heating operation, and (b) is mainly during the strong heating operation.

  The air conditioner of the third embodiment is such that the rotation axis of the upper wind direction plate is circular as shown in FIG. 11, and the other parts are the same as those of the first embodiment. By making the rotation shaft circular in this way, the passage through which the blown air leaks between the rotation shaft of the upper wind direction plate and the groove portion of the lower panel has a width Gp and a length of the cylindrical tube. And the length Lp of the passage becomes longer. In this way, the gap Lp is left as it is, and the length Lp of the passage is increased, so that the resistance to the blown-out air that leaks increases, and the amount of the blown-out air that leaks decreases.

  During the air blowing operation, the upper wind direction plate 29 is rotated as shown in FIG. 12, the length of the passage is Lp, which is considerably larger than those in the first and second embodiments, and the amount of the blowout air that leaks is small. During the cooling operation, the upper wind direction plate 29 is rotated as shown in FIG. 13B. However, since the rotation shaft 29a is circular, the length of the passage is determined by the shape of the groove 24c. This is the same as the length Lp of the passage, and is constant regardless of the rotational position of the rotational shaft, and the amount of the blown-out air that leaks is also constant.

  When the operation is stopped in FIG. 13 (a) or in the heating operation state in FIG. 14 (b), there is no blown air passing through this passage. Even in such a rotational position, the length Lp of the passage is a constant length. You can see that

  Here, the procedure when the upper wind direction plate is attached to and detached from the housing will be described with reference to FIGS.

  First, the structure of the upper wind direction plate will be described with reference to FIGS. FIG. 15 is a perspective view of the upper wind direction plate, and FIG. 15B is an exploded perspective view of the upper wind direction plate. FIG. 16 is an enlarged sectional view of the transmission part of the upper wind direction plate. FIG. 17 is a perspective view of the wind direction piece of the upper wind direction plate, and FIG. 17B is a perspective view of the wind direction piece of the upper wind direction plate seen from another angle. FIG. 18 is a detailed view of the rotating shaft portion of the wind direction piece of the upper wind direction plate, (a) is a plan view, (b) is a side view, (c) is a front sectional view, and (d) is a section AA. FIG. 19 is a detailed view of the shaft cover of the upper wind direction plate, (a) is a plan view, (b) is a cross-section BB, (c) is a front cross-sectional view, and (d) is a side view. FIG. 20 is a detailed view of the transmission member of the upper wind direction plate, (a) is a plan view, (b) is a left side view, (c) is a front sectional view, and (d) is a right side view. FIG. 21 shows the procedure for assembling the transmission member of the upper wind direction plate, (a) before assembly, (b) during manual insertion, (c) during restriction release, and (d) during deepest insertion.

  As shown in FIG. 15, the upper wind direction plate 29 has a right transmission shaft cover 292 and a left transmission shaft cover 293 attached to the wind direction piece 291, and a hollow portion formed on the rotation shaft 29 a by the wind direction piece 291 and the right transmission shaft cover 292. The transmission member 296 is inserted into the assembly. The transmission member 296 is coupled to the drive motor 287 of the upper wind direction plate 29 as shown in FIG. 16 when the upper wind direction plate 29 is attached to the housing 20, and transmits the driving force of the drive motor 287 to the upper wind direction plate 29. The upper wind direction plate 29 is rotated.

  As shown in FIGS. 17A and 17B, the wind direction piece 291 is formed with a wind direction surface 291d, a wind shielding surface 291e, and a rotation shaft portion 291a. The central portion excluding both ends of the rotation shaft portion 291a is The outer surface is a semi-cylindrical shape, and the inner surface is a semi-cylindrical portion 291g formed as a concave surface so that the transmission member 296 can be accommodated as described later. The outer surface of the semi-cylindrical is combined with the outer surfaces of the right transmission shaft cover 292 and the left transmission shaft cover 293 of FIG. 19 to be described later, and the outer surface of the rotating shaft 29a is formed into a cylindrical shape except for the connection portion with the wind shielding surface 291e. .

  Thus, in this embodiment, since the outer surface of the rotating shaft 29a is cylindrical, the gap between the lower panel 24 and the groove 24c is the same gap everywhere on the cylinder, and therefore the entire outer surface of the cylinder of the wind direction piece 291 is As shown in FIG. 18D, the gap forming portion 291b is formed, and similarly, the entire outer surface of the cylinder of the right transmission shaft cover 292 becomes the gap forming portion 292b as shown in FIG. 19B.

  As shown in FIG. 19, the right transmission shaft cover 292 has a cutout cylindrical portion 292a formed by cutting out a cylinder following a cylindrical tube portion 292c formed at the end, and as described above, the rotation of the wind direction piece 291 is performed. A rotation shaft 29a of the upper wind direction plate 29 is configured in combination with the moving shaft portion 291a. The cylindrical portion 292c is loosely fitted to the transmitted portion 291c of the wind direction piece 291 and is attached to the wind direction piece 291 with a shaft cover fixing screw 298.

  An opening 292d is provided in the cutout cylindrical portion 292a, and when the pressing portion 296a is pressed through the opening 292d using a tool such as a flat-blade screwdriver when facing a pressing portion 296a of the transmitting member 296 described later, the transmitting member 296 can be further moved to the inside.

  The end of the rotating shaft portion 291a on the side of the drive motor 287 is a transmitted portion indicated by reference numeral 291c in FIG. 18, and a flat portion 291f having a hollow inner surface formed into a polygonal shape, as will be described later. It engages with the polygonal part 296c of the transmission member 296 in FIG. 20 to receive the driving force from the transmission member 296, and rotates together with the wind shielding surface 291e and the wind direction surface 291d to change the wind direction.

  As described above, the transmission member 296 has the polygonal portion 296c that engages with the polygonal inner surface of the transmitted portion 291c of the wind direction piece 291 and is connected to the drive shaft 287a of the drive motor 287 on the drive motor 287 side. A coupling portion 296g is provided to release the functions of the push restricting portion 296f, the pushing portion 296a, and the push restricting portion 296f that restrict the movement of the transmission member 296 in the axial direction on the counter drive motor 287 side in the counter drive motor 287 side. A deformable portion 296b is provided.

  When assembling the upper wind direction plate 29, as shown in FIG. 15B, the left transmission shaft cover 293 is put on the wind direction piece 291 and the transmitted portion 291c of the wind direction piece 291 is covered with the right transmission shaft cover 292 as described above. The left transmission shaft cover 293 and the right transmission shaft cover 292 are fixed together with the shaft cover fixing screw 298 through the cylindrical portion 292c. Thereby, an internal space into which the transmission member 296 can be inserted is formed inside the rotation shaft 29a.

  Next, as shown by the arrow in FIG. 21A, the transmission member 296 is inserted into the internal space formed in the rotating shaft 29a through the hollow portion formed by the flat portion 291f of the transmitted portion 291c of the wind direction piece 291. . The inclined portion 296j from the distal end portion 296d of the transmission member 296 to the pressing portion 296a stops when it hits the stopper portion 292e of the right transmission shaft cover 292, but when a little force is applied, the inclined portion 296j is pushed by the stopper portion 292e, The deforming portion 296b bends and the pressing portion 296a passes through the stopper protrusion 292g. At the end of the dive, the movement restricting recess 296k is hooked on the stopper projection 292g, where the deformation is restored by the spring action of the deforming portion 296b, and the push restricting portion 296f is hooked on the stopper portion 292e as shown in FIG. It becomes impossible to insert more.

  Next, as shown in FIG. 21C, the pressing portion 296 a of the transmission member 296 is pushed through the opening 292 d of the right transmission shaft cover 292 with a tool 910 such as a flat-blade screwdriver. By pushing the pressing portion 296a with the tool 910, the catch between the stopper portion 292e and the pushing limit portion 296f of the transmission member 296 is released, and then the tool 910 is moved in the direction of the drawing direction arrow PI, as shown in FIG. As described above, the transmission member 296 is retracted to the innermost position.

  In this state, when the rotation shaft 29a of the upper wind direction plate 29 is made vertical so that the transmission member 296 faces down, transmission is performed until the sliding temporary locking portion 296h of the transmission member 296 hits the opening sliding portion 292f of the right transmission shaft cover 292. The member 296 is dropped, but the weight of the transmission member 296 does not drop further. However, when the coupling part outer surface 296m is held and pulled with a little force, the sliding temporary locking part 296h and the opening sliding part 292f are inclined so that both slide easily, so that the deforming part 296b is easily deformed and pushed in. The restricting portion 296f can pass through the stopper portion 292e, and the state shown in FIG.

  Next, the procedure for attaching the assembled upper wind direction plate to the housing will be described with reference to FIG. FIG. 22 shows a procedure for assembling the upper wind direction plate into the housing, (a) before assembly, (b) before engagement with the drive shaft, (c) during manual engagement, and (d) completion of engagement. It's time.

  When the upper wind direction plate 29 is attached to the housing 20, the upper wind direction plate 29 is assembled as shown in FIG. The support shaft end 29e of the rotating shaft 29a on the opposite side to the side where the transmission member 296 is inserted of the wind direction plate 29 is supported, and then the drive shaft coupling portion 296g of the transmission member 296 is as shown in FIG. And the drive shaft 287a of the drive motor 287 provided on the support 24b.

  From this state, the coupling portion outer surface 296m of the transmission member 296 is picked by hand and pulled out in the direction of the pull-out direction arrow PO as shown in FIG. 22C and coupled to the drive shaft 287a. At this time, as described above, since it is easy to pull out the transmission member 296 from the state of FIG. 22A = FIG. 19D to make the state of FIG. 21B, FIG. The transmission member 296 can be easily coupled to the drive shaft 287a without any trouble in the operation shown in FIG.

  At the position where the transmission member 296 is coupled to the drive shaft 287a, the movement restricting recess 296k is engaged with the stopper projection 292g, and the deformation is returned by the spring action of the deforming portion 296b, so that the pushing restricting portion as shown in FIG. Since 296f is caught by the stopper portion 292e and cannot be further inserted, the coupling between the transmission member 296 and the drive motor 287 does not naturally come off.

  As a result, the upper wind direction plate 29 and the drive motor 287 are securely coupled, and by driving the drive motor 287, the upper wind direction plate 29 is moved from the state of FIG. It can rotate to any position and change the wind direction over a wide range up to the blowing state.

  Next, the case where the upper wind direction plate is removed from the housing, such as during maintenance, will be described with reference to FIG. FIG. 23 shows the procedure for removing the upper wind direction plate from the housing, (a) before removal, (b) when the restriction is released, (c) during the disengagement, and (d) when the engagement is released.

  When the upper wind direction plate 29 is removed from the housing 20, it is transmitted to the right as shown in FIG. 23 (b) using a tool 910 such as a flat-blade screwdriver while attached to the housing 20 of FIG. 23 (a). The pressing portion 296a of the transmission member 296 is pushed through the opening 292d of the shaft cover 292. By pushing the pressing portion 296a with the tool 910, the catch between the stopper portion 292e and the pushing limit portion 296f of the transmission member 296 is released, and then the tool 910 is moved in the direction of the pull-in direction arrow PI as shown in FIG. Then, as shown in FIG. 23 (d), the transmission member 296 is retracted to the innermost position.

  Thereby, the coupling between the transmission member 296 and the drive motor 287 is released, and the upper wind direction plate 29 can be removed from the housing 20. Thus, since a tool 910 such as a flat-blade screwdriver must be used when removing, there is no risk that the user will accidentally remove it and touch the rotating object such as the internal blower fan 311 and do not use the tool 910 when installing. However, it can be installed, so maintenance work is simplified.

  Next, the upper wind direction plate of the air conditioner of Example 4 will be described with reference to FIG. FIG. 24 is an exploded perspective view of the upper wind direction plate of the indoor unit of the air conditioner according to the fourth embodiment.

  In the air conditioner of the fourth embodiment, transmission members 296 are incorporated on both sides of the rotating shaft 29a, and other parts are the same as those of the third embodiment. As shown in FIG. 24, the upper wind direction plate 29 of the air conditioner according to the fourth embodiment is provided with the left transmission shaft cover 294 and the right transmission shaft cover 292 attached to the rotation shaft 29a of the wind direction piece 291 and the wind direction piece 291 and the left transmission shaft cover. 294 and the right transmission shaft cover 292 are assembled by inserting the transmission member 296 into the hollow portion formed in the rotation shaft 29a.

  Thereby, the drive motor 287 is installed at both ends of the groove portion 24c of the housing 20, and the upper wind direction plate 29 can be driven from both ends of the long upper wind direction plate 29. In the case of single-side drive, the rigidity of the upper wind direction plate 29 is increased. It is possible to prevent the appearance from being deteriorated due to the difference in the deformation amount at both ends of the upper wind direction plate 29 generated accordingly, and to improve the appearance.

  Further, when the upper wind direction plate 29 is attached to the housing 20, first, the support shaft end 29 e is fitted to the support shaft 24 e of the lower panel 24 while being slightly inclined, and the transmission is performed after the transmission member 296 does not hit the drive shaft 287 a. When the method of pulling out the transmission member 296 by aligning the shaft centers on the member 296 side, it is necessary to fit the support shaft end 29e in an inclined state.

  For this purpose, it is necessary to increase the size of the fitting hole of the support shaft end 29e into which the support shaft 24e is fitted, and a large play can be made between the support shaft 24e and the support shaft end 29e. Such a large play reduces the sense of luxury when the user touches the air conditioner, causing the user to be dissatisfied, and noise caused by slight vibration during operation of the air conditioner. It is not preferable because it may occur.

  In order to avoid this, from the beginning, the rotation axis 29a of the upper wind direction plate 29 is aligned with the support shaft 24e of the lower panel 24 and the drive shaft 287a of the drive motor 287, and the upper wind direction plate 29 is pivoted. It is also conceivable that the support shaft end 29e is fitted into the support shaft 24e and then the transmission member 296 is fitted into the drive shaft 287a without any extra play by moving in parallel along the center.

  However, even in this method, since the moving distance for fitting the support shaft end 29e into the support shaft 24e is included in the moving distance for fitting the transmission member 296 into the driving shaft 287a, the transmission member 296 and the driving shaft 287a The actual engagement length becomes shorter. When the coupling length is shortened, the surface pressure of the engaging portion between the drive shaft 287a and the transmission member 296 increases, and the reliability of the transmission member 296 decreases.

  Further, if the engagement length is to be ensured, the movement distance of the transmission member 296 at the time of engagement is increased, and the distance between the drive shaft 287a of the drive motor 287 and the transmitted portion 291c of the wind direction piece 291 is increased. The length of the member 296 is increased, the required strength is increased, the size is increased, and this leads to an increase in the size of the upper wind direction plate 29 and wastes resources.

  As in the air conditioner of the fourth embodiment, by incorporating the transmission member 296 on both sides of the rotation shaft 29a, the length of the engagement portion between the transmission member and the drive shaft can be increased. , And the reliability of the engaging portion can be increased. In addition, the aesthetics can be improved, the possibility of noise generation can be eliminated, and the user's trust can be increased.

  Next, the upper wind direction plate of the air conditioner of Example 5 will be described with reference to FIGS. FIG. 25 is an exploded perspective view of the upper wind direction plate of the indoor unit of the air conditioner according to the fifth embodiment. FIG. 26 is a front view of the indoor unit. FIG. 27 is a detailed view of the support member of the upper wind direction plate, (a) is a plan view, and (b) is a left side view. FIG. 28 is a cross-sectional view of the central support portion of the upper wind direction plate. FIG. 29 shows the procedure for assembling the housing of the central support portion, (a) before the engagement with the support shaft, (b) during the engagement, and (c) when the engagement is completed.

  The air conditioner of the fifth embodiment is provided with a mechanism that supports the central portion of the rotating shaft 29a of the upper wind direction plate 29, and the other portions are the same as those of the fourth embodiment. The mechanism for supporting the central portion of the rotating shaft 29a is composed of a support piece 24d provided on the lower panel 24, a support bush 26 fitted to the support piece 24d, a wind direction piece 291 of the upper wind direction plate 29, a right transmission shaft cover 292, and a support member 297. Is done.

  As in the fourth embodiment, the transmission member 296 is coupled to the drive motor 287 of the upper wind direction plate 29 when the upper wind direction plate 29 is attached to the housing 20 as shown in FIG. This is transmitted to the wind direction plate 29 and the upper wind direction plate 29 is rotated. As shown in FIG. 25, the wind direction piece 291 is cut out at the center of the rotation shaft portion 291a, and is implemented at the end of the rotation shaft portion 291a on one side of the notch (in the embodiment, the middle support shaft cover 292 'side). The hollow portion 291c described in Example 3 is provided.

  As shown in FIG. 25, the middle support shaft cover 292 ′ and the right transmission shaft cover 292 are obtained by shortening only the length of the right transmission shaft cover 292 of the third and fourth embodiments, and the other portions are the embodiments. 3. Same as Example 4. The middle shaft cover 293 ′ is obtained by shortening only the length of the left transmission shaft cover 293 of the third embodiment, and the other portions are the same as those of the third embodiment. As shown in FIG. 25, the left transmission shaft cover 294 is obtained by shortening only the length of the left transmission shaft cover 292 of the fourth embodiment, and the other parts are the same as those of the fourth embodiment.

  A support member 297 is inserted into the hollow portion 291c provided in the central portion of the rotation shaft portion 291a. When the upper wind direction plate 29 is assembled into the housing 20, the support member 297 is slid to provide the lower panel 24. The upper support plate 24d is engaged through the support bush 26 to correct the deformation of the upper wind direction plate 29 due to gravity.

  As shown in FIG. 27, the support member 297 is formed by forming a cylindrical shaft portion 297g from the middle of the polygonal portion 296c of the transmission member 296 (see FIG. 20) of the third embodiment. The portion up to the portion 297c is the same as that from the distal end portion 296d of the transmission member 296 to the polygonal portion 296c. When the support member 297 is incorporated into the upper wind direction plate 29, as shown in FIG. 25, the left transmission shaft cover 294 is put on the rotating shaft portion 291a of the wind direction piece 291, and the left transmission shaft cover 294 and the middle support are supported by the shaft cover fixing screw 298. Secure the shaft cover 292 'together.

  Thus, an internal space into which the support member 297 can be inserted is formed between the rotation shaft portion 291a and the middle support shaft cover 292 ′. Next, the support member 297 is applied to the transmission portion 291c at the center of the wind direction piece 291 that covers the cylinder portion 292c of the middle support shaft cover 292 ′ in the same manner as the method described in the third embodiment (see FIG. 21). 28, and the support member 297 is assembled into the upper wind direction plate 29 as shown in FIG.

  Next, the middle shaft cover 293 ′ and the right transmission shaft cover 292 are attached to the rotation shaft portion 291 a of the right half of the wind direction piece 291, and the wind direction piece 291, the left transmission shaft cover 294 and the right transmission shaft cover 292 are formed on the rotation shaft 29 a. The transmission member 296 is inserted into the hollow portion formed.

  When assembling the upper wind direction plate 29 assembled in this way into the housing 20, first, in the state where the upper wind direction plate 29 is assembled as shown in FIG. As shown in FIG. 29B, the support member 297 is moved in the direction of the support piece 24d as shown in FIG. The shaft portion 297g is engaged with the support bush 26 fitted into the support piece 24d.

  Next, the support member 297 is moved until the shaft portion 297g and the support bush 26 are sufficiently engaged, and as shown in FIG. 29C, the push-in restricting portion 297f of the support member 297 is the stopper portion of the middle support shaft cover 292 ′. The movement in the reverse direction is restricted by 292e. Hereinafter, in the same manner as the procedure described in the third embodiment (see FIG. 22), the left and right transmission members 296 are coupled to the drive shaft 287a of the drive motor 287, and the incorporation of the upper wind direction plate 29 into the housing 20 is completed. .

  In this way, by supporting the central portion of the upper wind direction plate 29, when there is no support of the central portion, deformation due to its own weight or the like occurring in the central portion of the upper wind direction plate 29 is suppressed, and the appearance during use of the air conditioner Will be better.

  Next, the upper wind direction plate of the air conditioner of Example 6 will be described with reference to FIG. FIG. 30 is a cross-sectional view of an indoor unit outlet for explaining the air conditioner of Example 6, (a) is a cross-sectional view of the indoor unit outlet before improvement, and (b) is a cross-sectional view of the indoor unit outlet after improvement. It is.

  The air conditioner of the sixth embodiment is obtained by changing the engagement method of the lower panel 24 of the air conditioner of the third embodiment and the dew tray 35, and the other parts are the same as those of the third embodiment. The lower panel 24 faces the room where the user lives when the air conditioner is installed. During the heating operation of the air conditioner, the upper wind direction plate 29 rotates almost directly below, so that the user can What can be seen is the range of the external appearance component 24k which is the majority of the front surface.

  Therefore, in order to improve the quality of the product, it is necessary to make the external appearance component 24k in a place where the external appearance is impaired, the unevenness is avoided, and the screw is not visible from the room. In the third embodiment, the lower panel engaging hole 35a is provided in the dew receiving tray 35, the lower panel engaging claw 24g is formed in the lower panel support 24f provided in the lower portion of the lower panel 24, and the lower panel engaging hole 35a is provided with the lower panel engaging hole 35a. The engaging claw 24g is engaged, and the upper fixing portion 24h provided on the upper portion of the lower panel 24 is fixed to the upper receiving seat 35b of the dew receiving tray 35.

  In addition, although not shown in the figure, the lower panel 24 and the dew receiving tray 35 are designed to guide and fix the lower panel 24 and the dew receiving tray 35 to accurate positions using the shapes of the portions near the left and right ends of the lower panel 24 and the dew receiving tray 35. By comprising in this way, the butt | matching part B of the bottom part of the lower panel 24m used as the downstream part of the bottom part of the dew pan 35 used as the upper casing 280a and the downstream part of the upper casing 280a is combined correctly, and a clearance gap does not arise between them. .

  However, in the vicinity of the center of the lower panel 24, it is far from the fixing portion using the above-mentioned shape, and is also far from the upper fixing portion 24 h of the lower panel 24. Only the engaging portion between the joint hole 35a and the lower panel engaging claw 24g is provided. For this reason, it becomes difficult to hold the butt portion B without a gap when an adverse condition is overlapped in combination with a temperature change and a decrease in strength of the lower panel 24 that is thinned to save resources. There is a risk of it.

  As described above, when a gap is generated in the abutting portion B, the blown air enters between the lower panel 24 and the dew receiving tray 35 from the gap of the abutting portion B as indicated by arrows in FIG. In particular, since cold blown air enters during cooling, the lower panel 24 is cooled, and moisture in the room air is condensed and condensed on the indoor side surface of the lower panel 24. In particular, when the humidity is high, condensed water droplets may fall, causing the room to become dirty.

  In Example 6, in order to eliminate such a fear, as shown in FIG. 30 (b), a lower receiving seat 35 c is provided at the lower portion of the dew receiving tray 35, and a lower fixing portion 24 n is provided in the groove portion 24 c of the lower panel 24, so that the lower fixing is performed. 24n is fixed to the lower receiving seat 35c with the lower panel fixing screw 299 so that there is no gap between the bottom portion of the dew receiving tray 35 serving as the upper casing 280a and the lower panel lower end 24m serving as the downstream portion of the upper casing 280a. Fix it.

  Thus, since the lower panel 24 is firmly fixed at a position close to the butting portion B so that there is no gap between the butting portions B, the butting portion B is stable and does not cause a gap. There is no possibility that the cold blown air leaks between the lower panel 24 and the dew tray 35, and even when the humidity is high, there is no possibility of polluting the room due to the fall of condensation.

  Further, in this case, since the lower fixing portion 24n of the lower panel 24 can be provided at the back of the groove portion 24c, when the upper wind direction plate 29 is assembled in the housing 20, it is hidden by the rotation shaft 29a of the upper wind direction plate 29. Even when the air conditioner is stopped or operating, the lower fixing portion 24n and the lower panel fixing screw 299 are not exposed in the room, and the appearance can be kept good.

  Next, the upper wind direction plate of the air conditioner of Example 7 will be described with reference to FIGS. FIG. 31 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the seventh embodiment. FIG. 32 is an enlarged view of the rotating portion of the upper wind direction plate during the cooling operation of the indoor unit. FIG. 33 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit. FIG. 33 (a) is a stop time, and FIG. 33 (b) is mainly a cooling / air blowing operation. FIG. 34 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit. FIG. 34 (a) is mainly during the air blowing / weak heating operation, and (b) is mainly during the strong heating operation.

  In the air conditioner of the seventh embodiment, a ventilation opening 291h is provided on the wind shielding surface 291e of the wind direction piece 291 of the upper wind direction plate 29 of the air conditioner of the third embodiment, and an opening cover 291j is provided on the rotating shaft portion 291a. The other parts are the same as those in the third embodiment. In the air conditioner of the third embodiment, during the cooling operation, the air conditioner is sucked by the flow of the blown air as shown in FIG. 13B, and is formed by the gap forming portions 291b and 292b of the rotating shaft 29a of the upper wind direction plate 29 and the groove portion 24c. Through the gap, a small amount of room air flows into the blowout air passage 280 as indicated by a small arrow.

  As described above, by reducing the amount of air flowing through the gap, it is possible to effectively blow down the hot air blown out during the heating operation. In addition, as described above, condensation occurs on the upper surface of the wind-shielding surface 291e during the cooling operation when the humidity in the room is high, and the condensation is suppressed by attaching a heat insulating material to the upper surface of the wind-shielding surface 291e.

  In the air conditioner of the seventh embodiment, the room air entering the blowing air passage during the cooling operation is increased.

  Moreover, as shown in FIG.4 (b), the wind direction 303 of blowing air is between the extension line 301 of the lower casing 280b, and the extension line 302 of the upper casing 280a.

  And as shown in FIG. 39, the downstream wind direction board 300e is upward rather than parallel with the extension line 302 of the upper casing 280a. By doing in this way, the midstream wind direction board 300c can be pinched | interposed into the upstream of the blowing air of the downstream wind direction board 300e, and the flow of the blowing air to the downstream wind direction board 300e can be interrupted | blocked.

  As shown in FIG. 40, the upper wind direction plate 29 includes an upstream wind direction plate 300a, a first curved portion 300b that is concave downward, a middle wind direction plate 300c, and a second curved portion 300d that is convex downward. And it is comprised from the downstream wind direction board 300e. With this configuration, the area in the vertical direction of the upstream wind direction plate 300a can be reduced and the area in the vertical direction of the midstream wind direction plate 300c can be increased with respect to the airflow blown from the air outlet during the cooling operation. For this reason, the amount of airflow blown from the blower fan flowing in the midstream wind direction plate 300c increases. Then, as the amount of airflow flowing through the midstream wind direction plate 300c increases, a turbulent flow is generated in the midstream wind direction plate 300c, and separation tends to occur. Therefore, the airflow flowing through the downstream wind direction plate 300e located downstream of the midstream wind direction plate 300c can be suppressed, and the occurrence of condensation on the downstream wind direction plate 300e can be suppressed. In addition, although the description has been given of the case where the first curved portion 300b is concave downward and the second curved portion 300d is convex downward, the first curved portion 300b and the second curved portion 300d are bent. It is good also as a shape.

  As described above, the housing having the air suction port and the air outlet, the heat exchanger disposed in the housing, the room air is sucked from the air suction port, passed through the heat exchanger, and then the blown air is blown into the air. A lower fan that is provided below the blower passage, including a blower fan that blows out from the outlet, a casing that forms a blower passage from the blower fan to the air blower outlet, and an up-and-down wind direction plate that is located in the air blower outlet And an upper casing located above the air passage, and the upper and lower wind direction plates are an upstream wind direction plate, a midstream wind direction plate located in a downstream direction of the blown air with respect to the upstream wind direction plate, and a midstream wind direction plate. A first curved portion that is located between the downstream wind direction plate and the upstream wind direction plate and the middle flow direction plate and that faces the middle flow direction plate toward the extension line of the lower casing. And the midstream wind direction plate and downstream And a second curved portion that is located between the direction plate and directs the downstream wind direction plate away from the extension line of the lower casing, and during cooling operation, the downstream wind direction plate and the extension line of the upper casing It is upward rather than parallel.

  Thereby, the airflow which blows off from the air blower outlet which flows into the upper up-and-down wind direction board between the 1st music part and the 2nd music part can be increased, and the 1st music part and the 2nd music part, Turbulence is likely to occur in the upper vertical wind direction plate between the two. Airflow blown out from the air blowout port due to the occurrence of turbulent flow is easily separated from the upper vertical wind direction plate, and the indoor air blown out from the air blower port to the upper vertical wind direction plate located downstream of the second curved portion. Can be made difficult to flow. That is, during the cooling operation, the low-temperature indoor air blown from the air outlet is unlikely to flow to the upper vertical wind direction plate on the downstream side of the second curved portion, so that the occurrence of condensation can be suppressed.

  Further, during the cooling operation, the upstream wind direction plate is located on the extension line of the upper casing, and the second curved portion is more acute than the first curved portion.

  Thereby, generation | occurrence | production of dew condensation can be suppressed, suppressing that an upper vertical wind direction board deflects an air current at the time of air_conditionaing | cooling operation.

  The second curved portion is located in the upstream direction of the blown air with respect to the center of the vertical wind direction plate.

  Thereby, the area of the upper up-and-down wind direction board where it is hard to flow cold wind can be increased, and generation | occurrence | production of dew condensation can be suppressed more.

  The vertical wind direction plate has a rotation shaft that rotates the vertical wind direction plate in the vertical direction, and the upstream wind direction plate or the rotation shaft has a through hole that penetrates the upper surface and the lower surface of the vertical wind direction plate.

  This reduces the temperature difference between the upper and lower surfaces of the upper vertical wind direction plate by allowing airflow to flow above the upper vertical wind direction plate, and condensation occurs on the upper vertical wind direction plate upstream of the first curved portion. Can be suppressed. Moreover, since it is not necessary to flow an airflow on the upper surface of the upper vertical wind direction plate on the downstream side of the second curved portion, the amount of the airflow flowing through the cavity above the upper vertical wind direction plate can be suppressed.

  In addition, the air outlet has a wind direction plate for deflecting the wind direction of the blown air, and an arc shape centering on the rotation axis of the air direction plate between the support portions on the air conditioner body side that supports the wind direction plate. Forming a gap forming portion on the outer surface of the rotating shaft to keep the gap between the rotating shaft and the groove portion to a minimum during the rotation operation of the casing formed with the groove portion and the wind direction plate; At least a part of the rotation shaft is configured in a hollow shape, and the wind direction plate in which the rotation shaft and the wind direction surface are connected by a wind shielding surface, and the hollow portion is slidably accommodated in the axial direction of the rotation shaft. A transmission member for transmitting the driving force of the drive motor of the wind direction plate to the rotation shaft; and a limiting mechanism for limiting the sliding at a position where the drive motor and the transmission member are engaged with each other.

  As a result, a short circuit is created by making the gap between the rotating shaft of the wind direction plate and the housing a space where the blown air hardly flows, and when the blown air is directed downward, such as during heating, from the wind direction plate to the air inlet side. Can cut the wasteful flow that causes

  In addition, by placing the transmission member in the hollow part and providing a sliding restriction mechanism in the hollow part, the outer surface of the hollow part can be formed into a smooth curved surface with little unevenness, so a support mechanism with a conventional wind direction plate support Visual noise can be drastically reduced.

  When the wind direction plate is assembled into the housing, the transmission member is inserted into one end of the rotation shaft of the wind direction plate, the other end of the rotation shaft is engaged with the engagement portion at the other end of the groove portion of the housing, and The inserted transmission member is slid to the drive shaft side in accordance with the drive shaft of the drive motor fixed to one end of the housing groove, and the sliding restriction mechanism is operated at a position where it engages with the drive shaft. Thus, by incorporating the wind direction plate into the housing, the wind direction plate is attached to the housing so as to be able to rotate smoothly and surely without fear of coming off. For this reason, it is possible to obtain an air conditioner that effectively suppresses short circuits, reduces visual noise, and facilitates maintenance.

  Further, the outer surface of the hollow portion of the rotating shaft is formed in a columnar shape.

  As a result, the length of the gap passage between the casing portion and the groove portion that becomes the passage when the blown air leaks from the rotating shaft portion is substantially increased to the circumferential length of the groove portion, and passes through the gap. The air resistance increases and the amount of blown air that leaks decreases. Moreover, since the appearance of the rotating shaft portion is a smooth surface with a uniform curvature, visual noise can be reduced. Moreover, the area of a hollow part becomes large with respect to the same semicircle-shaped groove part, and the intensity | strength and rigidity of a transmission member can be raised. On the contrary, since the outer diameter of the rotating shaft can be reduced with respect to the required strength and rigidity of the transmission member, the mass of this portion can be reduced and the wind direction plate can be reduced in weight. For this reason, the air conditioner which suppresses a short circuit effectively can be obtained.

  A plurality of the gap forming portions are provided.

  As a result, there are a plurality of gaps serving as resistance of the blown-out air that leaks out, and the resistance is doubled, so that the amount of the blown-out air leaking is approximately halved. Further, since a flow path wider than the gap is formed between the gap forming portions, the pressure loss is increased due to the labyrinth effect, and the leakage amount of the blown air can be further suppressed. For this reason, the air conditioner which suppresses a short circuit effectively can be obtained.

  Further, an engaging portion for fixing the positional relationship between the groove portion and the upper casing is provided in the groove portion.

  This makes it easy to ensure the linearity of the groove portion of the lower panel in the rotational axis direction, and the change in the gap between the gap forming portion and the groove portion of the upper wind direction plate due to the rotation of the upper wind direction plate is reduced. The size of the upper gap can be reduced, and the amount of blown air leaking from the gap can be further reduced. In addition, since the positional relationship between the upper casing and the groove is fixed, the lower panel facing the blowing air passage and the butted portion of the upper casing can be assembled without any step or gap. If there is a gap between the lower panel and the upper casing, the cool air blows out into the space between the lower panel and the dew pan as shown by the arrow in FIG. Moisture in the room air condenses on the indoor side and dew condensation may impair the appearance, and if there is a large amount of dew condensation, it may drip and contaminate the room. If there is a step in the butt part of the lower panel and the upper casing, the blown air flowing along the upper casing collides with the step and splits into two directions, partly entering the back side of the lower panel from the gap of the butt part, Others flow from the center of the blowout airflow, changing the direction and generating vortices downstream of the steps, causing condensation in unexpected places and generating vortex noise. If there is no gap or step between the bottom panel and upper casing butting, the air that has leaked from this section to the back side of the lower panel will be shut off, and the lower panel will not be cooled, resulting in less condensation on the surface of the lower panel. At the same time, the generation of vortices is reduced, the occurrence of condensation and abnormal noise is reduced, and the deterioration of appearance due to condensation and the deterioration of comfort due to dirt and noise in the room due to dripping of condensation can be prevented. At this time, since the engaging portion is provided in the groove portion of the lower panel, the rotating shaft is incorporated in front of the engaging portion in the use state of the air conditioner and is not visible from the room. It will never be. For this reason, the air conditioner which suppresses a short circuit effectively, makes a visual noise small, and prevents the deterioration of an external appearance can be obtained.

  In addition, a plurality of flat portions are provided on the inner surface of the hollow shape portion of the receiving portion of the driving force transmitted from the transmission member of the rotating shaft, and the flat portions are arranged in a regular polygon shape having six or fewer sides or in parallel.

  Thereby, the same amount of moment is applied to each side of the inner surface of the hollow portion, and no large moment is applied by protruding. For this reason, the reliability of the rotation operation of the wind direction plate can be improved. Conversely, if the dimensions of the transmission member and the hollow part are adjusted to the moment required for the rotation of the wind direction plate, the transmission member and the hollow part can be reduced, and the material can be saved. In this case, the number of sides exceeds six. When the distance between the axis and the side approaches the distance between the axis and the apex, and the material is synthetic resin, there is a high risk that the transmission member will idle in the hollow part due to deformation of the side or collapse of the apex. Become. For this reason, the air conditioner with high reliability of the rotation operation of the wind direction plate can be obtained.

  The line connecting the airfoil trailing edge of the wind direction surface and the center of the rotation axis is the reference line, and the maximum height of the wind direction plate from the reference line is in the range of 0.15 to 0.3 of the length of the reference line. The length along the reference line from the reference line to the position of the maximum height of the wind direction plate is in the range of 0.25 to 0.45 of the length of the reference line.

  As a result, the deflection of the wind direction plate when the wind direction plate is supported at both ends of the rotation shaft is suppressed by the hollow portion of the rotation shaft and the wind shielding surface, and the aesthetic appearance when stopped as well as during use is reduced. Improves the quality of the appearance. In this case, if the maximum height of the wind direction plate from the reference line is less than 0.15 of the length of the reference line, the amount of deformation becomes large, and if it exceeds 0.3 of the length of the reference line, the wind direction from the reference line also increases. If the length along the reference line up to the position of the maximum height of the plate is less than 0.25 of the length of the reference line, if the length exceeds the reference line length of 0.45, the quality of the appearance is good. A harmony machine can be obtained.

  Further, a line connecting the airfoil trailing edge of the wind direction surface and the center of the rotation axis is used as a reference line, and the angle at which the reference line extends from the reference line to the position of the maximum height of the wind direction surface is in a range of 42 to 63 degrees. .

  Further, the restriction mechanism further includes a release mechanism for restricting sliding in the pushing direction provided at an intermediate portion of the sliding range, and releasing the restriction mechanism.

  As a result, when removing the wind direction plate from the housing for maintenance, etc., the restriction release mechanism that releases the sliding restriction of the transmission member fitted between the rotation shaft and the drive shaft at one end of the rotation shaft is operated. Let By actuating the restriction release mechanism, the transmission member can be moved toward the rotating shaft, so that the transmitting member is pulled into the hollow portion of the rotating shaft and removed from the drive shaft of the drive motor. Next, the transmission member is pulled out from the transmission member engaging portion at the other end, and the wind direction plate is removed from the housing. Thus, since the wind direction plate can be easily removed from the housing, maintenance is also facilitated. For this reason, an air conditioner with easy maintenance can be obtained.

  The release mechanism is a mechanism that is operated using a manual tool.

  Thus, for example, using a flat-blade screwdriver, the pressing portion of the restriction releasing mechanism of the transmission member provided inside from the outer surface of the rotating shaft is pressed, and the deforming portion connected to the pressing portion is bent and the pressing limit claw is stopped. Remove from the section. The transmission member is now slidable. By pulling in the direction of the rotation axis while being pushed by the driver, the engagement with the drive shaft of the drive motor is released, and the wind direction plate is inclined and pulled in the direction of the rotation axis. The engaging portion at the other end can be removed and completely removed from the housing. At this time, by pushing the pressing part that is usually out of reach, using a manual tool, and moving the transmission member while pushing it, finally it is structured to be able to remove the wind direction plate, During other maintenance, there is no risk of inadvertently pressing the pressing portion and removing the wind direction plate, and the maintenance work can be performed efficiently. For this reason, an air conditioner with easy maintenance can be obtained.

  Further, the sliding mechanism of the transmission member of the wind direction plate and the limiting mechanism are provided at one end of the rotating shaft.

  As a result, the transmission member, the sliding mechanism, the sliding restriction mechanism, and the restriction release mechanism are only provided on one side, and the number of parts is smaller than that provided on both sides of the transmission member, the sliding mechanism, the sliding restriction mechanism, and the restriction release mechanism. Can save resources, reduce weight, and reduce costs. For this reason, the air conditioner which saved resources can be obtained.

  In addition, a sliding mechanism and a limiting mechanism for the transmission member of the wind direction plate are provided at both end portions of the rotating shaft. Thereby, the length of the engaging part of a transmission member and a drive shaft can be lengthened, the load per unit area concerning an engaging part is reduced, and the reliability of an engaging part increases. In addition, if a drive motor is arranged at both ends of the groove portion of the housing, the wind direction plate can be driven from both ends of the long wind direction plate, and in the case of one-side drive, deformation at both ends of the wind direction plate occurs according to the rigidity of the wind direction plate. It is possible to prevent the appearance from being deteriorated due to the difference in amount, and to improve the appearance. For this reason, an air conditioner with improved aesthetics can be obtained.

  Further, at least a part of the rotation shaft at the center of the wind direction plate is formed in a hollow shape, and a support member for holding the rotation shaft at the center is provided on the air conditioner body side, and the rotation portion is provided in the hollow portion. A holding member that transmits a holding force to the moving shaft is slidably accommodated in the axial direction of the rotating shaft, and a limiting mechanism that restricts the sliding at a position where the supporting member and the holding member are engaged is provided.

  Thus, when re-installing the wind direction plate that has been removed at one end for maintenance, first engage the engagement portion at the center, then engage the transmission member at one end, and then engage the engagement portion at the other end. Engage. The air conditioner is often installed at a high altitude in the room, and maintenance is often performed in a posture that is not easy, such as climbing on a stepladder and facing up with an inconvenient posture.

  In this case, if there is no engaging portion in the center, the engaging portions at one end must be engaged while comparing the engaging portions at both ends that are separated from each other in an inconvenient posture on the stepladder, Since it is necessary to check whether it is really engaged after engagement, support the wind direction plate with one hand, hold the driver with the other hand, twist the upper body from side to side on a narrow stepladder, and It was a difficult task.

  If there is a support member that supports the wind direction plate in the center, the center of the wind direction plate that is easy to balance is held, and the pressing part of the holding member located near this is moved while pushing with a screwdriver. The work can be done without twisting the upper body, making it easy.

  After holding the central part of the wind direction plate, the transmission member at one end is adjusted to the drive shaft with one hand, and the pressing part of the holding member at a close position is moved while being pushed with a screwdriver in the other hand. It becomes work. Next, the same operation is performed at the engaging portion at the other end to complete the assembly. Also in this case, the operation is easy because the engaging portion and the pressing portion are located close to each other. For this reason, an air conditioner with easy maintenance work can be obtained.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 5 Remote control 6 Outdoor unit 8 Connection piping 20 Housing | casing 21 Housing | casing base 22 Unit frame 23 Decorative frame 24 Lower panel 24a, 24b Support part 24c Groove part 24d Support piece 24e Support shaft 24f Lower panel support 24g Bottom Panel engaging claw 24h Upper fixing part 24j Opening cover storage part 24k External appearance component part 24m Lower end part 24n Lower fixing part 25 Cosmetic panel 26 Support bush 27 Upper air inlet 27 'Front air inlet 28 Air outlet 29 Upper wind direction plate 29a Rotating shaft 29b Gap holding portion 29c Hollow portion 29d Driving force transmitting portion 29e Support shaft end 29 'Lower wind direction plate 33 Indoor heat exchanger 35 Dew tray 35a Lower panel engagement hole 35b Upper seat 35c Lower seat 37 Drain piping 230 Air Suction Unit 231 Upper Filter 231 ′ Front Filter 251 Suction Panel 280 Out air passage 280a upper casing 280b lower casing 285 louver 287 driving motor 287a driving shaft 291 wind piece 291a rotating shaft portions 291 b, 292b gap forming portion 291c the transmitted portion (hollow portion)
291d Wind direction surface 291e Wind shielding surface 291f Flat portion 291g Semi-cylindrical portion 291h Ventilation opening 291j Opening cover 292 Right transmission shaft cover 292a Notch cylindrical portion 292c Tube portion (hollow portion)
292d Opening 292e Stopper part 292f Opening sliding part 292g Stopper protrusion 292 'Middle support shaft cover 293, 294 Left transmission shaft cover 293' Middle shaft cover 296 Transmission member 296a, 297a Pressing part 296b, 297b Deformation part 296c, 297c Polygonal part 296d, 297d Tip portion 296e, 297e Drop prevention portion 296f Pushing restriction portion 296g Drive shaft engagement portion 296h, 297h Sliding temporary locking portion 296j, 297j Inclination portion 296k Movement restriction concave portion 296m Coupling portion outer surface 297 Support member 297f Pushing restriction portion 297g Shaft portion 298 Shaft cover fixing screw 299 Lower panel fixing screw 300a Upstream wind direction plate 300b First bent portion 300c Middle flow direction plate 300d Second bent portion 300e Downstream wind direction plate 301 Lower casing extension line 302 Upper casing extension line 30 3 Blowing air direction 311 Blower fan 313 Blower motor 910 Tool Bt Butting section Ey Eye of person looking into air conditioner Gp Gap Lp Length of passage OL Wind direction plate outline PI when stopped Pull-in direction arrow PO Pull-out direction arrow θs The angle at which the shaft cover is exposed to the room

Claims (5)

A housing having an air inlet and an air outlet;
A heat exchanger disposed in the housing;
A blower fan that sucks indoor air from the air inlet, passes through the heat exchanger, and blows out air from the air outlet;
A casing that forms a blowing path from the blower fan to the air outlet;
An up and down wind direction plate located at the air outlet,
The casing has a lower casing located below the air passage, and an upper casing located above the air passage,
The up-and-down wind direction plate includes an upstream wind direction plate, a midstream wind direction plate located in the downstream direction of the blown air with respect to the upstream wind direction plate, and a downstream wind direction located in the downstream direction of the blown air with respect to the midstream wind direction plate. A first curved portion that is located between a plate, the upstream wind direction plate, and the midstream wind direction plate, and that directs the midstream wind direction plate in a direction approaching an extension line of the lower casing, the midstream wind direction plate, and the A second curved portion located between the downstream wind direction plate and directing the downstream wind direction plate away from the extension line of the lower casing,
During cooling operation, the downstream wind direction plate is upward rather than parallel to the extension line of the upper casing,
During the cooling operation, the upstream louver is located on the extension of the upper casing, and the second bending portion air conditioner Ru acute der than the first curved portion. A housing having an air inlet and an air outlet;
A heat exchanger disposed in the housing;
A blower fan that sucks indoor air from the air inlet, passes through the heat exchanger, and blows out air from the air outlet;
A casing that forms a blowing path from the blower fan to the air outlet;
An up and down wind direction plate located at the air outlet,
The casing has a lower casing located below the air passage, and an upper casing located above the air passage,
The up-and-down wind direction plate includes an upstream wind direction plate, a midstream wind direction plate located in the downstream direction of the blown air with respect to the upstream wind direction plate, and a downstream wind direction located in the downstream direction of the blown air with respect to the midstream wind direction plate. A first curved portion that is located between a plate, the upstream wind direction plate, and the midstream wind direction plate, and that directs the midstream wind direction plate in a direction approaching an extension line of the lower casing, the midstream wind direction plate, and the A second curved portion located between the downstream wind direction plate and directing the downstream wind direction plate away from the extension line of the lower casing,
During cooling operation, the downstream wind direction plate is upward rather than parallel to the extension line of the upper casing,
It said upstream wind direction plate, air conditioner that having a through hole penetrating the upper surface and the lower surface of the vertical airflow direction plate. A housing having an air inlet and an air outlet;
A heat exchanger disposed in the housing;
A blower fan that sucks indoor air from the air inlet, passes through the heat exchanger, and blows out air from the air outlet;
A casing that forms a blowing path from the blower fan to the air outlet;
An up and down wind direction plate located at the air outlet,
The casing has a lower casing located below the air passage, and an upper casing located above the air passage,
The up-and-down wind direction plate includes an upstream wind direction plate, a midstream wind direction plate located in the downstream direction of the blown air with respect to the upstream wind direction plate, and a downstream wind direction located in the downstream direction of the blown air with respect to the midstream wind direction plate. A first curved portion that is located between a plate, the upstream wind direction plate, and the midstream wind direction plate, and that directs the midstream wind direction plate in a direction approaching an extension line of the lower casing, the midstream wind direction plate, and the A second curved portion located between the downstream wind direction plate and directing the downstream wind direction plate away from the extension line of the lower casing,
During cooling operation, the downstream wind direction plate is upward rather than parallel to the extension line of the upper casing,
Wherein positioned at the lower end of the upper casing, air conditioner Ru comprising a rotation shaft for rotating the horizontal flaps vertically. The air conditioner according to any one of claims 1 to 3, wherein the second curved portion is positioned upstream of the blown air from the center of the up-and-down wind direction plate. A housing having an air inlet and an air outlet;
A heat exchanger disposed in the housing;
A blower fan that sucks indoor air from the air inlet, passes through the heat exchanger, and blows out air from the air outlet;
A casing that forms a blowing path from the blower fan to the air outlet;
An up and down wind direction plate located at the air outlet,
The casing has a lower casing located below the air passage, and an upper casing located above the air passage,
The up-and-down wind direction plate is located in a concave downward first curved portion, is located in the downstream direction of the blown air from the first curved portion, and is convex downward in the second curved portion, A downstream wind direction plate positioned in the downstream direction of the blown air from the curved portion of 2;
During the cooling operation, the downstream louvers are Ri upward der than parallel to the extension line of the upper casing,
An air conditioner provided with a rotation shaft that is positioned at a lower end of the upper casing and rotates the vertical airflow direction plate in the vertical direction .