JP5887316B2 - Air conditioner indoor unit and air conditioner - Google Patents

Description

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

  In Patent Document 1, the lower vertical wind direction plate is disposed almost on the extension of the lower casing, and one end of the lower casing and the lower vertical wind direction plate is brought close to each other with almost no gap. An air conditioner is disclosed in which the blown air is less likely to leak from the proximity portion and the efficiency of blowing is not reduced.

JP-A-9-287807

  However, in the air conditioner disclosed in Patent Document 1, in the normal cooling operation mode, the lower vertical airflow direction plate blocks the hot and humid room air and the low temperature discharge air, and conducts heat from the back surface of the lower vertical airflow direction plate to the surface. In addition, condensation occurs on the surface side of the lower vertical wind direction plate exposed to hot and humid room air. Condensed water droplets can grow and collect and fall onto indoor furniture or the floor.

  An object of this invention is to provide the indoor unit of the air conditioner which implement | achieves high ventilation efficiency and suppresses dew condensation of an up-and-down wind direction board.

The air conditioner of the present invention includes an air passage connecting an inlet and an outlet, an indoor heat exchanger disposed in the air passage, and an indoor fan disposed in the air passage and located downstream of the indoor heat exchanger. a fan, an upper casing which constitutes the upper part of the air outlet, and a lower casing constituting the lower portion of the outlet, and a lower louver after being placed in the air outlet, the upper surface at the upstream end of the upper bottom louver normal cooling operation mode in which the ability priority mode located below the extended line on or extension of the lower casing of the lower casing, the upper surface at the upstream end portion of the top and bottom louvers positioned above the extension line of the lower casing with bets, the distance between the top and bottom wind direction plate and the lower casing that put the normal cooling operation mode is longer than the distance between the top and bottom wind direction plate and the lower casing that put on the ability priority mode.

  ADVANTAGE OF THE INVENTION According to this invention, the indoor unit of the air conditioner which suppresses dew condensation of an up-and-down wind direction board can be provided, implement | achieving high ventilation efficiency.

It is a cycle lineblock diagram of the air harmony machine concerning a 1st embodiment. It is sectional drawing along the side surface of the indoor unit which concerns on 1st Embodiment. It is an expanded side sectional view in the capacity priority mode of the indoor unit outlet according to the first embodiment. It is an expanded side sectional view in the time of the normal cooling operation mode of the indoor unit outlet according to the first embodiment. It is sectional drawing along the side surface at the time of the operation stop of the indoor unit which concerns on 1st Embodiment. It is an expanded side sectional view in the capacity priority mode of the indoor unit outlet according to the second embodiment. It is an expanded side sectional view in the normal cooling operation mode of the indoor unit outlet according to the second embodiment. It is an expanded side sectional view in the normal heating operation mode of the indoor unit outlet according to the second embodiment.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.
(First embodiment)
FIG. 1 is a cycle configuration diagram of the air conditioner according to the first embodiment. During the cooling operation, the high-temperature and high-pressure refrigerant discharged from the compressor 34 flows into the outdoor heat exchanger 37 via the four-way valve 35. The refrigerant flowing into the outdoor heat exchanger 37 is condensed and becomes liquid refrigerant by exchanging heat with the outdoor air sent by the outdoor fan 38. The liquid refrigerant passes through the expansion valve 36 to become a low-temperature and low-pressure two-phase refrigerant and flows into the indoor heat exchanger 5. The low-temperature and low-pressure two-phase refrigerant that has flowed into the indoor heat exchanger 5 exchanges heat with the indoor air sent by the indoor blower fan 6. At this time, the indoor air sent to the indoor heat exchanger 5 is cooled by the low-temperature and low-pressure two-phase refrigerant flowing into the indoor heat exchanger 5 and discharged into the room from the outlet 3. Since the air discharged from the blower outlet 3 into the room is lower than the temperature of the air at the suction port 2, the room temperature can be lowered. The refrigerant heat-exchanged by the indoor heat exchanger 5 returns to the compressor 34 again via the four-way valve 35.

  The compressor 34, the outdoor heat exchanger 37, the outdoor blower fan 38, and the expansion valve 36 are arranged in the outdoor unit, and the indoor heat exchanger 5 and the indoor blower fan 6 are arranged in the indoor unit 1.

  FIG. 2 is a cross-sectional view along the side surface of the indoor unit according to the first embodiment. The indoor unit 1 of the air conditioner includes an air passage 4 connecting the suction port 2 and the air outlet 3, a decorative frame 13, and a decorative panel 12 that is fixed to the decorative frame 13 and arranged on the front surface of the indoor unit. Furthermore, the indoor unit 1 of the air conditioner is located inside the decorative panel 12 and the decorative frame 13 and between the indoor heat exchanger 5 disposed in the air passage 4 and between the decorative panel 12 and the indoor heat exchanger 5. The filter 14 comprised from the front surface side filter 14a located and the upper surface side filter 14b located under the upper decorative frame 13a is provided. An indoor heat exchanger 5 for exchanging heat with air from which dust has been removed is disposed directly below the upper surface side filter 14b, and the air from which dust has been removed by the filter 14 is an Λ-shaped (inverted V shape) indoor heat exchanger. Flows to 5. The air inlet 2 for sucking indoor air is located at the upper part of the indoor unit 1 main body (above the decorative panel 12 and the upper surface side filter 14b). Flowing.

  The blower outlet 3 is provided below the decorative panel 12, and the heat-exchanged air is blown out from the blower outlet 3 to the front of the indoor unit 1. The indoor air blower fan (airflow once-through fan) 6 is an air passage 4 from the suction port 2 to the air outlet 3 via the indoor heat exchanger 5 and is disposed on the downstream side of the indoor heat exchanger 5. Air that has undergone heat exchange is blown out from the outlet 3.

  The cabinet 15 is fixed to the wall surface. A drain pan 16 that receives water condensed in the indoor heat exchanger 5 is disposed below the indoor heat exchanger 5. The cabinet 15 and the drain pan 16 constitute a downstream wind tunnel 17 for generating the air passage 4 on the downstream side of the fan 6.

  An upper casing 18 is disposed on the upper side of the downstream wind tunnel 17, and a lower casing 11 is disposed on the lower side. The upper casing 18 constitutes the upper part of the outlet 3, and the lower casing 11 constitutes the lower part of the outlet 3.

  Further, the end face of the downstream side wind tunnel 17 on the side opposite to the fan 6 side becomes the blowout port 3. A left and right wind direction plate 33, a lower vertical wind direction plate 10 disposed below the downstream side wind tunnel 17, and an upper vertical wind direction plate 9 disposed above the downstream side wind tunnel 17 are disposed at the outlet 3. Here, the arrangement at the air outlet 3 includes a case where it is arranged in the downstream wind tunnel 17 in the vicinity of the air outlet 3. The lower vertical wind direction plate 10 closes the air outlet 3 when the operation is stopped, and opens the air outlet 3 during the cooling operation or the heating operation, by the control unit.

  Since the upper vertical wind direction plate 9 is disposed in the air passage, there is no temperature difference between the air flowing on the upper and lower surfaces of the upper vertical wind direction plate 9 during the cooling operation, so the vertical wind direction plate 9 does not condense. .

  On the other hand, the lower vertical wind direction plate 10 has a temperature difference between the upper surface and the lower surface, and thus condensation occurs. Therefore, in order to prevent heat transfer between the upper and lower surfaces of the lower vertical wind direction plate 10, the lower vertical wind direction plate 10 is configured with a heat insulating material 28 such as urethane foam having a large thermal resistance interposed therebetween.

  Next, the operation of the vertical wind direction plate will be described with reference to FIGS. FIG. 3 is an enlarged side sectional view in the capacity priority mode of the indoor unit outlet according to the first embodiment. The capacity priority mode is used when the difference between the set temperature during the cooling operation or the heating operation and the room temperature is large and a large cooling capacity or heating capacity is required.

  For example, it is used when there is a difference between the set temperature and the room temperature at a predetermined level or more at the start of cooling operation or heating operation. The cooling capacity and the heating capacity are determined by the product of the temperature difference between the air inlet 2 and the air outlet 3 and the air volume, and the air capacity increases as the air volume increases. At this time, increasing the number of rotations of the indoor fan 6 increases the air volume, but at the same time increases the noise. That is, if the ventilation efficiency can be increased, the performance can be increased with low noise.

  In the capacity priority mode, the lower vertical wind direction plate 10 is rotated about the shaft 21 of the lower vertical wind direction plate, and the upstream end upper surface 26a of the lower vertical wind direction plate 10 is above or below the extension line of the lower casing 11. It arrange | positions so that it may be located below the extension line of the side casing 11. As a result, the blowing resistance of the cold air 22 or the hot air 23 passing through the downstream wind tunnel 17 can be reduced, and the cold air 22 or the hot air 23 can be efficiently sent out into the room without reducing the amount of blown air. The upper vertical wind direction plate 9 and the lower vertical wind direction plate 10 are rotated around a shaft 20 of the upper vertical wind direction plate and a shaft 21 of the lower vertical wind direction plate by a driving component 25 such as a step motor 24. The upper surface of the lower vertical wind direction plate 10 refers to the surface of the lower vertical wind direction plate 10 on the upper vertical wind direction plate 9 side.

  About the cross-sectional shape along the side surface of the lower casing 11 and the lower up-and-down wind direction board 10, if the lower up-and-down wind direction board 10 is on the substantially extension line of the lower casing 11, a linear shape or a curve shape may be sufficient. In addition, it is more preferable to arrange the upstream end portion upper surface 26 a of the lower up-down wind direction plate 10 so as to be on the extension line of the lower casing 11.

  Since the lower vertical wind direction plate 10 rotates around the vertical wind direction plate shaft 21, a clearance that does not interfere with the lower vertical wind direction plate 10 and the lower casing 11 is required. The clearance needs to be equal to or greater than the management value of the product size variation and warpage of the lower vertical wind direction plate 10, but in order to use the lower vertical wind direction plate 10 as a diffuser, the clearance should be as small as possible. If the clearance is large, the cold air 22 or the hot air 23 leaks from the clearance portion, and the dynamic pressure originally recovered as static pressure gives kinetic energy to the surrounding air, so that the static pressure recovery cannot be performed effectively.

  When the clearance is sufficiently small, the outlet 3 is smaller than the pressure around the indoor unit 1 according to Bernoulli's theorem, so the clearance portion is the flow of the inflowing air 39 flowing into the outlet 3 (flow from below to above). Occurs.

  However, when the clearance is increased, the flow of the cold air 22 and the hot air 23 flowing along the lower casing 11 is more excellent than the flow flowing into the air outlet 3, and the cool air 22 or the hot air 23 leaks from the clearance portion. This gives kinetic energy to the surrounding air. Further, the inflowing air 39 is preferably less because it is given kinetic energy. For the above reasons, it is desirable that the clearance is small. In order to effectively recover the static pressure, the clearance is preferably 2 mm or less.

  In addition, about the upper up-and-down wind direction board 9, it is preferable to set it as a substantially parallel attitude | position to the lower up-and-down wind direction board 10 in order to make ventilation resistance small.

  FIG. 4 is an enlarged side cross-sectional view of the indoor unit outlet according to the first embodiment in the normal cooling operation mode. The normal cooling operation mode is used when a large cooling capacity is not required or when the indoor air humidity is high. A heat insulating material 28 such as urethane foam having a large thermal resistance is sandwiched between the lower vertical wind direction plate 10, and when there is a temperature difference between the upper and lower surfaces of the lower vertical wind direction plate 10 for a long time, When the humidity remains high, there is a concern that the lower vertical wind direction plate 10 is condensed.

  Therefore, in this embodiment, when the difference between the set temperature and the room temperature is equal to or lower than a predetermined value, or when the humidity is equal to or higher than the predetermined value, the normal cooling operation mode is set, and the upper surface 26a on the upstream end of the lower vertical wind direction plate 10 The lower up-and-down wind direction plate 10 is arranged so that is positioned above the extension line of the lower casing 11. The distance between the lower vertical wind direction plate 10 and the lower casing 11 in the normal cooling operation mode is longer than the distance between the lower vertical wind direction plate 10 and the lower casing 11 in the capacity priority mode.

  Low-temperature air tends to stay at a low position in the room. When low-temperature air stops at a low position in the room, only the user's feet get cold, which may cause discomfort to the user. In the normal cooling operation mode, it is desirable to blow cool air 22 from the indoor unit 1 of the air conditioner to a high position in the room to lower the temperature of the entire room. For this reason, the position rotated 5 to 25 degrees above the shaft 21 of the lower vertical wind direction plate from the position of the lower vertical wind direction plate 10 in the capacity priority mode is the lower side in the normal cooling operation mode. The position of the vertical wind direction plate 10 is assumed. The upper vertical wind direction plate 9 is preferably in a posture substantially parallel to the lower vertical wind direction plate 10 in order to reduce blowing resistance.

  On the downstream side of the lower casing 11, the upstream end 26 of the lower vertical wind direction plate is located. At this time, since a predetermined gap is provided between the lower vertical wind direction plate 10 and the lower casing 11, the flow in which the cold air 22 tries to diffuse is superior to the flow of the incoming air 39. For this reason, the cool air 22 flows along the lower casing 11 and flows separately on the upper side and the lower side of the lower vertical wind direction plate 10 at the upstream end portion 26 of the lower vertical wind direction plate. Since the cool air 22 also flows below the lower vertical wind direction plate 10, the upper side and the lower side of the lower vertical wind direction plate 10 are cooled substantially uniformly. Thereby, the dew condensation on the surface of the lower up-and-down wind direction board 10 can be controlled.

  The shaft 21 of the lower vertical wind direction plate is located between the upper casing 18 and the lower casing 10 on the upstream side of the lower vertical wind direction plate 10. The distance between the shaft 21 of the lower vertical wind direction plate and the lower vertical wind direction plate 10 is longer than the distance between the lower vertical wind direction plate 10 and the lower casing 11 in the normal cooling operation mode. Specifically, the gap between the upstream end 26 of the lower vertical wind direction plate 10 and the lower casing 11 is preferably 5 to 15 mm. Thereby, the cool air 22 is easily supplied to the lower side of the lower vertical wind direction plate 10 in the normal cooling operation mode.

  About the lower up-and-down wind direction board 10, it is good also as a C cut surface or a curved-surface shape in the upstream edge part lower side 26b of a lower up-and-down wind direction board. Thereby, the cool air 22 flowing along the lower side of the lower vertical wind direction plate 10 in the normal cooling operation mode flows more smoothly without resistance.

  The lower vertical wind direction plate 10 may have a hollow structure and a structure provided with a heat insulating material 28 inside. Thereby, the inhibitory effect of the dew condensation to the lower up-and-down wind direction board 10 surface can be heightened.

  Switching between the capacity priority mode and the normal cooling operation mode is performed by the user. Further, when the detected humidity reaches a preset humidity (predetermined value) by the humidity sensor 32 provided in the indoor unit 1 of the air conditioner, the capacity priority mode and the normal cooling operation mode may be automatically switched. . In addition to the humidity sensor 32 or instead of the humidity sensor 32, the capacity priority mode and the normal cooling operation mode may be switched according to the detection value of the temperature sensor 31.

  Immediately after the start of operation, condensation does not occur and it is necessary to cool the room rapidly. Therefore, the capacity priority mode is forcibly set regardless of the humidity sensor 32 or the detected value of the humidity sensor 32 for a predetermined time from the start of operation. May be executed.

  In the capacity priority mode, the rotation speed of the indoor blower fan 6 may be changed to a predetermined value, and the rotation speed of the indoor blower fan 6 is not changed by switching to the normal cooling operation mode in the capacity priority mode. May be.

  The capacity priority mode and the normal cooling operation mode are not necessarily configured as a specific operation mode that can be set by the user, and depend on the values detected by the room temperature sensor 31 and the humidity sensor 32 in one cooling operation mode. Thus, the position of the lower vertical wind direction plate 10 may be switched between the position of the lower vertical wind direction plate 10 in the capacity priority mode and the position of the lower vertical wind direction plate 10 in the normal cooling operation mode.

  As described above, according to the first embodiment of the present invention, the indoor unit 1 of the air conditioner is provided with the capability priority mode for efficiently cooling the indoor air, and when the humidity of the indoor air is extremely high, the normal cooling operation is performed. Depending on the mode, condensation on the surface of the up-and-down wind direction plate 10 can be suppressed.

  FIG. 5 is a cross-sectional view along the side surface when the indoor unit according to the first embodiment is stopped. The upper vertical wind direction plate 9 and the lower vertical wind direction plate 10 in the present embodiment are curved so as to follow the housing of the indoor unit 1. Therefore, when the operation of the air conditioner is stopped, the lower surfaces of the upper vertical wind direction plate 9 and the lower vertical wind direction plate 10 become a part of the design of the indoor unit 1, and the design surface can be excellent.

  As shown in FIG. 5 when the operation of the air conditioner is stopped, the lower surface of the lower vertical wind direction plate 10 becomes a part of the surface constituting the design appearance of the indoor unit 1, and the lower vertical wind direction plate 10 is moved in the normal cooling operation mode. In order to obtain the position shown in FIG. 4 and the position shown in FIG. 3 in the capacity priority mode, the shaft 21 of the lower upper and lower wind direction plate on which the lower upper and lower wind direction plate 10 rotates is winded more than the lower upper and lower wind direction plate 10. The upper casing is disposed between the lower casing 11 and the upper casing 18.

When aiming at static pressure recovery as a diffuser, the longer the lower vertical wind direction plate 10 is, the longer the effect is. However, since the lower vertical wind direction plate 10 is further away from the shaft 21, Requires a large torque. When the torque of the step motor 24 that rotates the lower vertical wind direction plate 10 is insufficient, the torque can be increased through the reduction gear, but the reduction gear becomes larger as the reduction ratio becomes larger. That is, when the lower up-and-down wind direction plate 10 is used as a diffuser, the structure for obtaining the maximum effect of the diffuser has a reduction gear ratio that is large enough to fit the reducer in the indoor unit 1, and the lower up-and-down wind direction plate 10 is rotated. The lower vertical wind direction plate is lengthened to the upper limit of the torque that can be moved. Note that the step motor 24 and the speed reducer may be positioned on the back side of the lower casing 11 and above the lower decorative frame 13b. The torque of the shaft 21 of the lower vertical wind direction plate can be increased while avoiding that the step motor 24 and the speed reducer obstruct the airflow. The back side of the lower casing 11 refers to the space on the back side of the downstream wind tunnel 17.
(Second Embodiment)
The second embodiment is different from the first embodiment in that the lower casing 11 of the second embodiment is the first inclined portion 29 and the second inclined portion 29 is located on the downstream side (front end side) from the first inclined portion 29. This is a point having an inclined portion 30. Compared to the first inclined portion 29, the second inclined portion 30 is inclined at the tip side in the floor surface direction.

  Next, the operation of the up and down wind direction plate of the second embodiment will be described with reference to FIGS. FIG. 6 is an enlarged side sectional view in the capacity priority mode of the indoor unit outlet according to the second embodiment. In the capacity priority mode, the lower vertical wind direction plate 10 is rotated about the shaft 21 of the lower vertical wind direction plate, and the upper surface of the lower vertical wind direction plate 10 is on the extension line of the first inclined portion 29 of the lower casing 11. Or it is located below the extension line of the lower casing. As a result, the blowing resistance of the heat-exchanged cold air 22 or hot air 23 passing through the downstream wind tunnel 17 is reduced, so that the cool air 22 or the hot air 23 can be efficiently sent into the room without reducing the amount of blown air. it can. The upper vertical wind direction plate 9 and the lower vertical wind direction plate 10 are rotated by a driving component 25 such as a step motor 24 as in the first embodiment.

  Regarding the cross-sectional shapes along the first inclined portion 29 of the lower casing 11 and the side surfaces of the lower vertical wind direction plate 10, the lower vertical wind direction plate 10 may be on a substantially extended line of the first inclined portion 29 of the lower casing 11. For example, a linear shape or a curved shape is acceptable. At this time, the gap between the upstream end 26 of the lower vertical wind direction plate and the first inclined portion 29 of the lower casing 11 is preferably as small as 2 mm or less as in the first embodiment.

  The upper vertical wind direction plate 9 is also preferably in a posture substantially parallel to the lower vertical wind direction plate 10 in order to reduce blowing resistance.

  FIG. 7 is an enlarged side cross-sectional view of the indoor unit outlet according to the second embodiment in the normal cooling operation mode. The normal cooling operation mode is used when a large cooling capacity is not required or when the indoor air humidity is high.

  As in the first embodiment, a position rotated by 5 to 25 degrees around the shaft 21 of the lower vertical wind direction plate from the position of the lower vertical wind direction plate 10 in the capacity priority mode is set to the normal cooling operation mode. The lower vertical wind direction plate 10 is at the position of the hour. The upper vertical wind direction plate 9 is preferably in a posture substantially parallel to the lower vertical wind direction plate 10 in order to reduce blowing resistance.

  The upper surface 26 a of the upstream end portion of the lower vertical wind direction plate is located above the extension line of the first inclined portion 29 of the lower casing 11. For this reason, the cold air 22 flowing along the first inclined portion 29 of the lower casing 11 flows separately on the upper and lower sides of the lower vertical wind direction plate 10 at the upstream end portion 26 of the lower vertical wind direction plate. Go. At this time, a part of the cool air 22 is more effectively lower than the first embodiment from the first inclined portion 29 to the second inclined portion 30 along the lower side of the lower vertical wind direction plate 10 by the Coanda effect. Since the cool air also flows below 10, the upper and lower sides of the lower vertical wind direction plate 10 are cooled substantially uniformly. Thereby, the dew condensation on the surface of the lower up-and-down wind direction board 10 can be controlled.

  The gap between the upstream end 26 of the lower vertical wind direction plate and the first inclined portion 29 of the lower casing 11 is preferably 5 to 15 mm. Thereby, it becomes easy to supply cold air also to the lower side of the lower vertical wind direction plate 10 in the normal cooling operation mode.

  About the lower up-and-down wind direction board 10, it is good also as a C cut surface or a curved-surface shape in the upstream edge part lower side 26b of a lower up-and-down wind direction board. Thereby, the cool air 22 flowing along the lower side of the lower vertical wind direction plate 10 in the normal cooling operation mode flows more smoothly without resistance.

  The lower vertical wind direction plate 10 may have a hollow structure and a structure provided with a heat insulating material 28 inside. Thereby, the inhibitory effect of the dew condensation to the lower up-and-down wind direction board 10 surface can be heightened.

  FIG. 8 is an enlarged side cross-sectional view of the indoor unit outlet according to the second embodiment in the normal heating operation mode. The normal heating operation mode is used when a large heating capacity is not required or when the temperature of the room air approaches the set temperature. High-temperature air tends to stop at a high position in the room. When hot air stops at a high position in the room, the air near the user's head becomes hot, and the user's feet are not warm, which may cause discomfort. In the normal heating operation mode, it is desirable to blow warm air 23 from the indoor unit 1 of the air conditioner to a lower position in the room to warm it from the user's feet. Therefore, in the normal heating operation mode, the lower vertical wind direction plate 10 is rotated around the shaft 21 of the lower vertical wind direction plate, and the upper surface of the lower vertical wind direction plate 10 is the second side of the lower casing 11. It arrange | positions so that it may become below the extension line of the inclination part 30, or the extension line of the 2nd inclination part 30. FIG. At this time, the lower vertical wind direction plate 10 position is preferably a position rotated about 5 to 30 degrees around the axis from the lower vertical wind direction plate 10 position in the capacity priority mode. It is desirable that the upper vertical wind direction plate 9 has a posture substantially parallel to the lower vertical wind direction plate 10.

  The warm air 23 flows along the lower casing 11 and flows along the upper surface of the lower vertical wind direction plate 10 by the Coanda effect through the first inclined portion of the lower casing and the second inclined portion of the lower casing. Hot air 23 is blown out.

  Although the lower vertical wind direction plate 10 is disposed as an extension line of the lower casing 11 as a diffuser, the upper vertical wind direction plate 9 is similarly disposed as a diffuser even when positioned so as to be an extension line of the upper casing 18. The effect of can be obtained. However, since the cool air 22 and the warm air 23 flow along the lower casing 11, an effect as a diffuser equivalent to the lower vertical wind direction plate 10 cannot be obtained.

  When the operation of the air conditioner is stopped, as shown in FIG. 5, the lower surface of the lower vertical wind direction plate 10 becomes a part of the design of the indoor unit 1, and the lower vertical wind direction plate 10 is moved to the lower vertical wind direction plate 10 in the normal cooling operation mode. In order to set the lower vertical wind direction plate 10 to the position shown in FIG. 3 or FIG. 6 in the capacity priority mode and the lower vertical wind direction plate 10 to the position shown in FIG. The shaft 21 of the lower vertical wind direction plate on which the vertical wind direction plate 10 rotates is located on the windward side of the lower vertical wind direction plate 10 and is disposed between the lower casing 11 and the upper casing 18.

  As in the first embodiment, switching between the capacity priority mode, the normal cooling operation mode, and the normal heating operation mode is performed by the user. Moreover, when the preset room temperature / humidity is reached by the room temperature sensor 31 and the humidity sensor 32 provided in the indoor unit 1 of the air conditioner, the capacity priority mode and the normal cooling operation are automatically performed. The mode and the normal heating operation mode may be switched.

  When the cooling operation is started, the capacity priority mode is used when the set temperature and the room temperature have a predetermined difference or more. When the difference is within the predetermined temperature difference, the normal cooling operation mode is set.

  The transition from the capacity priority mode to the normal cooling operation mode is performed when the difference between the set temperature and room temperature is less than the predetermined value, or when the humidity during the predetermined time is higher than the predetermined value, the position of the vertical airflow direction plate in the normal cooling operation mode. Condensation is prevented by flowing a wind on the lower surface of the lower vertical wind direction plate 10 and eliminating the temperature difference between the upper surface and the lower surface.

  The capacity priority mode at the start of the heating operation is used when there is a difference between the set temperature and the room temperature that is greater than or equal to a predetermined value.

  The transition from the capacity priority mode to the normal heating operation mode is performed when the difference between the set temperature and the room temperature is equal to or less than a predetermined value. Hot air 23 is blown out to warm the user's feet.

  According to the second embodiment, the indoor unit 1 of the air conditioner has an ability priority mode that efficiently cools or warms indoor air, and at the time of cooling operation in which the humidity of the indoor air is extremely high, Condensation on the surface of the wind direction plate 10 can be suppressed. Furthermore, at the time of the normal heating operation mode, the blowing resistance in the vicinity of the lower casing 11 can be reduced, and the reduction in the air volume can be suppressed.

  In addition, this invention is not limited to each embodiment, Moreover, you may combine embodiment mentioned above suitably.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Suction port 3 Outlet 4 Air passage 5 Indoor heat exchanger 6 Indoor ventilation fan 9 Upper vertical wind direction board 10 Lower vertical wind direction board 11 Lower casing 12 Cosmetic panel 13 Cosmetic frame 13a Upper decorative frame 13b Lower decorative frame 14 Filter 14a Front side filter 14b Upper side filter 15 Cabinet 16 Drain pan 17 Downstream wind tunnel 18 Upper casing 20 Upper vertical wind direction plate shaft 21 Lower vertical wind direction plate shaft 22 Cold air 23 Hot air 24 Step motor 25 Drive component 26 Lower side Upstream end 26a of the upper and lower airflow direction plate Upper upstream end portion 26b of the lower upper and lower airflow direction plate Lower side of upstream end of the upper and lower airflow direction plate 28 Heat insulating material 29 First inclined portion 30 Second inclined portion 31 Room temperature sensor 32 Humidity Sensor 33 Left and right wind direction plate 34 Compressor 35 Four-way valve 36 Expansion valve 37 Outdoor heat exchanger 38 Outdoor fan
39 Incoming air

Claims (5)

An air passage connecting the inlet and the outlet;
An indoor heat exchanger disposed in the air passage;
An indoor air blower fan disposed in the air passage and located downstream of the indoor heat exchanger;
An upper casing constituting the upper part of the outlet;
A lower casing constituting a lower portion of the outlet,
And the lower wind direction plate on which is arranged in the air outlet,
And ability priority mode upstream end upper surface of the front Symbol up and down wind direction board is located below the extension line or on an extension of the lower casing of the lower casing,
And a normal cooling operation mode upstream end upper surface of the front Symbol up and down wind direction plate is positioned above the extension line of the lower casing,
The distance between the lower casing and front Symbol up and down wind direction plate in the normal cooling operation mode, the indoor distance longer than the air conditioner between the lower casing and front Symbol up and down wind direction plate in the capacity priority mode Machine. Comprising a shaft which rotates the front Symbol up and down wind direction board,
An indoor unit of an air conditioner according to claim 1, characterized in that changing the distance between the lower casing and front Symbol up and down wind direction board by rotating the shaft. The lower casing includes a first inclined portion, and a second inclined portion that is located on the downstream side of the first inclined portion and is inclined in the floor surface direction relative to the first inclined portion,
Upstream end upper surface of the front Symbol up and down wind direction board is provided with a normal heating operation mode which is located from below the extension line of the extension or on the second inclined portion of the second inclined portion,
In the normal cooling operation mode, the upstream end upper surface of the front Symbol up and down wind direction board is located above the extension line of the first inclined portion,
In the capacity priority mode, the upstream end upper surface of the front Symbol up and down wind direction board to claim 2, characterized in that positioned below the extension line of the extended line or on the first inclined portion of the first inclined portion The indoor unit of the described air conditioner. It has a humidity sensor that detects the humidity in the room,
The normal cooling operation mode is performed when a value detected by the humidity sensor is equal to or greater than a predetermined value, and the capacity priority mode is performed when a value detected by the humidity sensor is smaller than the predetermined value. Item 4. The indoor unit for an air conditioner according to any one of Items 1 to 3. The indoor unit of the air conditioner according to any one of claims 1 to 4,
An air conditioner comprising an outdoor unit having a compressor, an outdoor heat exchanger, an outdoor air blowing fan, and an expansion valve.