WO2005052463A1 - Air conditioner - Google Patents

Abstract

Wind direction changing sections (110a, 110b) for changing the direction of wind are disposed forwardly of a front guide (6a) in a blowing path (6) as seen in the direction of wind, the front guide leading the conditioned air forwardly and downward. There is a high static pressure section (90) in which the static pressure in the vicinity of the wind direction changing sections (110a, 110b) is higher than the static pressure in the front guide (6a) when conditioned air is sent from a blow-out port (5) to a region immediately below or rearwardly below. The wind direction changing sections (110a, 110b) are arranged so that the isobars (90a) of the high static pressure section (90) are formed along the direction of flow of conditioned air flowing while facing the wind direction changing section (110a, 110b).

Description

 Specification

 Air conditioner

 Technical field

 The present invention relates to an air conditioner for conditioning air taken in a housing and sending the air indoors.

 Background art

 FIG. 47 is a side cross-sectional view showing a conventional air conditioner indoor unit disclosed in Japanese Patent Application No. 2002-26437. The indoor unit 1 of the air conditioner is usually arranged at a position higher than the height of the user, and the main body is held by the cabinet 2. The cabinet 2 is provided with a claw (not shown) on the rear side surface, and is supported by engaging the claw with a mounting plate (not shown) attached to the side wall W1 in the room.

 [0003] A front panel 3 provided with a suction port 4 on the upper surface side and the front side is detachably attached to the cabinet 2. A substantially rectangular outlet 5 extending in the width direction of the indoor unit 1 is formed in a gap between the lower end of the front panel 3 and the lower end of the cabinet 2.

 [0004] Inside the indoor unit 1, a ventilation path 6 communicating from the suction port 4 to the blowout port 5 is formed. A blower fan 7 for sending air is arranged in the blower path 6. At a position facing the front panel 3, an air filter 8 that collects and removes dust contained in the air sucked from the suction port 4 is provided. An indoor heat exchange 9 is arranged between the blower fan 7 and the air filter 8 in the blower path 6.

 [0005] The indoor heat exchanger 9 is connected to a compressor (not shown) arranged outdoors, and the refrigeration cycle is operated by driving the compressor. The operation of the refrigeration cycle cools the indoor heat exchanger 9 to a temperature lower than the ambient temperature during cooling. At the time of heating, the indoor heat exchanger 9 is heated to a temperature higher than the ambient temperature.

[0006] Between the indoor heat exchange 9 and the air filter 8, a temperature sensor 61 for detecting the temperature of the air taken into the cabinet 2 is provided. The temperature sensor 61 detects the temperature of the air sucked from the suction port 4 and determines the operating frequency of the refrigeration cycle according to a difference from a target room temperature (hereinafter, “set temperature” t) set by the user. And the blower fan 7 Is being controlled.

 [0007] Drain pans 10 are provided below the indoor heat exchanger 9 before and after the indoor heat exchanger 9 to collect dew drops from the indoor heat exchanger 9 during cooling or dehumidification. The front drain pan 10 is attached to the front panel 3, and the rear drain pan 10 is formed integrally with the cabinet 2.

 [0008] In the vicinity of the air outlet 5 in the air blowing path 6, there are lateral louvers l la, l ib which can change the vertical blowing angle to any direction between a substantially horizontal direction and a lower rear direction. Is provided. On the far side of the horizontal louvers l la and l ib, a vertical louver 12 capable of changing the blowing angle in the left-right direction is provided.

 [0009] In the air conditioner having the above configuration, when heating of the air conditioner is started, the blower fan 7 is driven to rotate, and the refrigerant from the outdoor unit (not shown) flows to the indoor heat exchanger 9 and the refrigeration cycle. Is driven. As a result, air is sucked into the indoor unit 1 from the suction port 4, and dust contained in the air is removed by the air filter 8.

 [0010] The air taken into the indoor unit 1 exchanges heat with the indoor heat exchange 9 and is heated. Then, through the ventilation path 6, the vertical louver 12 and the horizontal louvers l la and l ib are used in the left-right direction and up and down.

 The direction is regulated, and the conditioned air is sent from the outlet 5 downward and forward as shown by the arrow A into the room.

 [0011] When the difference between the indoor temperature and the set temperature is smaller than a predetermined temperature or the like, as shown in Fig. 48, the horizontal louvers l la and l ib direct the wind direction substantially downward. As a result, the conditioned air is discharged almost directly downward as indicated by arrow B1 at the outlet 5 and reaches the floor in the living room and spreads along the entire floor along the floor.

 [0012] Also, since the specific gravity of the warm air is small, a part of the air flow sent from the outlet 5 is wound up and rises as shown by an arrow B3. As a result, there are problems that the heating capacity is reduced due to the short circuit, and that the upper part of the living room is heated and the lower part is not sufficiently heated.

[0013] For this reason, Japanese Patent Application No. 2003-005378 discloses an air conditioner capable of sending conditioned air rearward from five outlets as shown in Fig. 49. As a result, the air sent downward and rearward from the outlet 5 as shown by the arrow C is transmitted to the side wall W1 by the Coanda effect and reaches the floor. Therefore, it is possible to prevent a rise in warm air sent downward, thereby improving the heating efficiency and 1) It is possible to improve suitability.

 [0014] Patent Document 1 discloses an air conditioner capable of changing the direction of a wind direction plate and sending out conditioned air from a blow-out port 5 substantially downward.

 Patent Document 1: Patent No. 3311932

 Disclosure of the invention

 Problems to be solved by the invention

 FIG. 50 shows a static pressure distribution near the air outlet 5 when the above-described conventional air conditioner sends out conditioned air forward and downward from the air outlet 5. According to the figure, the area around the outlet 5 has a uniform static pressure distribution. However, when the conditioned air is sent substantially directly downward from the outlet 5, the conditioned air flowing through the ventilation path 6 is changed by about 45 ° in the downward direction by the horizontal louvers l la and l ib. FIG. 51 shows the static pressure distribution near the outlet 5 at this time. As shown in the figure, a high static pressure portion 90 (shown by oblique lines in FIG. 48) having an extremely high static pressure as compared with the other portions is generated in the air passage 6.

 [0016] The conditioned air flowing in the air blowing path 6 passes through the high static pressure section 90. In other words, the isostatic line of the static pressure of the high static pressure section 90 and the streamline of the air flow intersect, and the conditioned air flows. For this reason, a large pressure loss is caused, and the blowing efficiency is reduced. That is, when the blower fan 7 has the same number of rotations, the air volume is reduced to about 70 to 80% of the maximum air volume (at the time of the front downward blowing). That is, the contour line of the high static pressure portion 90 intersects with the airflow, and a large pressure loss occurs when the airflow passes through the high static pressure portion 90. This is the cause of the so-called bending loss.

 When the conditioned air is sent rearward and downward from the outlet 5, the conditioned air flowing through the blowing path 6 is changed by about 90 ° downward and rearward by the horizontal louvers l la and l ib. . FIG. 52 shows the static pressure distribution near the outlet 5 at this time. As shown in the figure, a high static pressure portion 90 (shown by oblique lines in FIG. 49) having a higher static pressure than in the case shown in FIG. As a result, when the blower fan 7 has the same rotation speed, the air volume is reduced to about 50 to 60% of the maximum air volume (at the time of the above-mentioned downward blowing).

[0018] When the amount of air blown out from the outlet 6 is reduced, the reach of warm air is shortened and the airflow from the side wall W1 is separated, so that the winding due to buoyancy increases. As a result, the room cannot be air-conditioned to every corner, and the temperature near the floor rises. As a result, It gives pleasure and lowers the body temperature of the user locally, which harms health. To prevent this, send

 There was a problem that the noise increased when the air flow was increased by increasing the rotation speed of the wind fan 7 and sending out conditioned air.

[0019] Furthermore, it is conceivable to configure the blower passage 6 downward so as to reduce pressure loss at the time of blowing directly downward or rearward downward to reduce noise. However, there is a new problem that dew condensation is likely to occur on the horizontal louvers l la and l ib during cooling operation, in which only the air volume decreases when air is blown out horizontally or forward.

[0020] Further, according to the air conditioner disclosed in Patent Document 1, the airflow is separated from the wind direction plate due to abrupt wind direction change, and it is difficult to set the wind direction in a desired direction. Also in this case, similarly to the above, a high static pressure portion is generated in the vicinity of the wind direction plate, and a constant pressure line intersecting with the air flow is generated to increase the pressure loss, thereby reducing the air volume.

[0021] The present invention provides an air conditioner capable of switching a wind direction of air to be blown out, which can supply conditioned air to every corner of a living room and reduce noise. The purpose is to do.

 Means for solving the problem

[0022] In order to achieve the above object, the present invention provides a suction port for taking in indoor air, an outlet for delivering conditioned air conditioned from the suction port to the room, and An air conditioner that is provided with an air flow path leading to an outlet and a wind direction variable portion that changes a wind direction of conditioned air sent from the air outlet to a lower front direction and a lower direction or a lower rear direction, and is mounted on an indoor wall surface. When the conditioned air is blown directly downward or rearward downward, the isostatic line of the static pressure distribution near the variable wind direction portion is formed along the flow direction of the conditioned air facing the variable wind direction portion. The variable wind direction part is arranged in the above.

According to this configuration, the air conditioner is mounted on the indoor wall surface. For example, when performing a cooling operation, the conditioned air is also sent forward and downward with the outlet force. In addition, when performing the heating operation, the variable air direction section moves, and conditioned air is sent directly below or behind the outlet force, and the conditioned air descends along the wall surface due to the Coanda effect, and then flows on the floor. Circulate indoors The At this time, the static pressure distribution formed in the vicinity of the variable wind direction portion is formed such that the isobars are substantially parallel to the airflow flowing toward the variable wind direction portion. As a result, the airflow flows without intersecting with the isobar, and is sent out from the outlet.

 [0024] Further, in the air conditioner having the above-described configuration, in the air conditioner, the blowing path includes a front guide portion that guides the conditioned air downward and forward, and the variable wind direction portion is configured to supply conditioned air from the outlet. When the air is sent downward and forward, a flow path is formed along the airflow that flows through the front guide portion, and when the blast air is sent directly downward or rearward and downward, the air flows through the front guide portion. It is characterized by curving the airflow.

 [0025] According to this configuration, the conditioned air flowing through the front guide section flows through the flow path along the front guide section and is sent forward and downward by the guidance of the wind direction variable section. In addition, the conditioned air flowing through the front guide section is curved by the guidance of the wind direction variable section, and is sent out directly downward or rearward downward.

 [0026] Further, according to the air conditioner having the above configuration, when the conditioned air is sent from the outlet to the lower direction or the lower rear direction, the flow direction of the airflow flowing through the front guide portion by the wind direction variable portion is increased. It is characterized by closing the front in the direction. According to this configuration, the airflow flowing through the front guide portion is curved by being blocked by the air layer near the wind direction variable portion that blocks the front in the traveling direction, and is guided directly downward or rearward downward.

[0027] Further, the present invention provides the air conditioner having the above-described configuration, in which the conditioned air flows from the air outlet directly downward.

 Or a lower static pressure portion, which is higher than the static pressure of the front guide portion, is formed in contact with the wind direction variable portion in the forward direction of the airflow flowing through the front guide portion when the air is sent rearward and downward. It is characterized by. According to this configuration, the airflow flowing through the front guide portion is blocked by the high static pressure portion formed forward in the traveling direction, is curved, and is guided directly downward or rearward downward.

 [0028] It is preferable that the cross-sectional shape of the high static pressure portion is a substantially arcuate bicuspid curve force. It is more desirable that the high static pressure portion has a maximum value of the static pressure at the center of the arc forming a substantially arcuate shape.

[0029] Further, in the air conditioner having the above-described configuration, when the conditioned air is sent from the outlet to the lower direction or the lower rear direction, the flow path of the conditioned air is narrowed by the high static pressure portion. Thus, the flow passage area is smaller than the front guide portion. According to this configuration, the air flow is blocked by the high static pressure portion, and the width of the flow path through which the conditioned air can flow is narrower than that of the front guide portion. The flow passage area narrowed at one end by the high static pressure part may be enlarged again on the downstream side.

 [0030] Further, the present invention is characterized in that, in the air conditioner having the above-described configuration, the wind direction variable portion is disposed so as to intersect an extension of a lower inner wall inside the front plan. According to this configuration, the conditioned air is guided by the variable wind direction section below the extension of the front guide section.

 [0031] Further, the airflow direction variable portion can be formed by a movable inner wall of the airflow path. The air flow path may be extended by the wind direction variable section. The wind direction variable portion may be formed by a plurality of wind direction plates arranged at the air outlet and changing directions by turning.

 [0032] Further, the present invention provides the air conditioner having the above configuration, wherein a static pressure detecting means for detecting a static pressure distribution in the air blowing path is provided, and the wind direction variable section is controlled based on a detection result of the static pressure detecting means. It is characterized by being variable. According to this configuration, the static pressure distribution in the air flow path is detected by the static pressure detecting means, and the direction of the variable wind direction section is changed so that the equal pressure lines near the variable wind direction section follow the flow path.

 [0033] Further, the present invention is characterized in that in the air conditioner having the above-described configuration, indoor heating operation is performed by sending out conditioned air.

 [0034] Further, the present invention provides a suction port for taking in room air, an air outlet for introducing conditioned air taken in from the air inlet into the room, and a blowing path for guiding conditioned air to the air outlet, An air conditioner comprising: a wind direction variable section configured to vary a wind direction of conditioned air to be sent out. The wall of an air flow path curved by the wind direction variable section is caused by a difference in static pressure in the ventilation path. It is characterized by being formed.

 [0035] According to this configuration, the conditioned air flowing through the airflow path is sent out of the outlet port with the airflow curved by the airflow direction variable section, and a static pressure distribution is formed in the airflow path. The wall surface of the curved air flow path is formed by the difference in static pressure in the air flow path, and the air flow flows along the wall surface.

[0036] Further, in the air conditioner having the above-described configuration, the air blowing path includes a front guide section that guides conditioned air downward and forward, and the wind direction variable section circulates the front guide section. Form a flow path along the air flow and allow conditioned air to flow forward and downward from the outlet. In addition to the air outlet, the airflow flowing through the front guide portion is curved by the airflow direction variable portion, and the conditioned air is sent out directly below or behind the outlet force.

 [0037] According to this configuration, the conditioned air flowing through the front guide section is curved by the guide of the wind direction variable section, and is sent directly downward or rearward and downward. The conditioned air descends along the indoor wall due to the Coanda effect, and then circulates on the floor and circulates through the room. It is advisable to perform the heating operation by sending conditioned air directly downward or backward from the outlet.

 [0038] Further, the present invention is characterized in that, in the air conditioner having the above-described configuration, the wall surface is formed by closing the front in the traveling direction of the airflow flowing through the front guide section by the wind direction variable section. According to this configuration, the airflow flowing through the front guide portion is curved by the wall surface formed by the difference in static pressure near the variable wind direction portion that blocks the front in the traveling direction, and is guided directly downward or rearward and downward.

 [0039] Further, in the air conditioner having the above-described configuration, in the air conditioner, the wall surface is in contact with the wind direction variable portion in the forward direction of the airflow flowing through the front guide portion, and has a higher pressure than the static pressure of the front guide portion. Is characterized by high static pressure part force. According to this configuration, the flow of the airflow flowing through the front guide portion is curved by the wall surface formed of the high static pressure portion formed forward in the traveling direction, and is guided directly downward or rearward downward.

 [0040] Further, the present invention is characterized in that, in the air conditioner having the above configuration, the flow path of the conditioned air is narrowed by the high static pressure portion so that the flow passage area is smaller than that of the front guide portion. According to this configuration, the air flow is curved by the wall surface having a high static pressure portion force, and the width of the flow passage through which the conditioned air can flow is narrower than the width of the front guide portion. The flow path area narrowed at one end by the high static pressure portion may be enlarged again on the downstream side.

 [0041] Further, the present invention is characterized in that, in the air conditioner having the above-described configuration, the wind direction variable portion is disposed so as to intersect an extension of a lower inner wall inside the front plan. According to this configuration, the conditioned air is guided below the extension of the front guide portion by the wall surface of the air passage formed near the variable wind direction portion.

[0042] Further, the airflow direction variable portion can be formed by a movable inner wall of the airflow path. The air flow path may be extended by the wind direction variable section. The variable wind direction section is located at the air outlet and has multiple It may be formed by a number of wind direction plates.

 [0043] Further, the present invention is characterized in that in the air conditioner having the above-described configuration, positioning means for positioning the wind direction variable portion at a position where the wall surface is formed is provided. According to this configuration, the wind direction variable section is arranged at a predetermined position by the positioning means, and the wall surface of the air flow path due to the difference in static pressure is formed near the wind direction variable section.

 [0044] Further, the present invention provides a suction port for taking in room air, an air outlet for delivering conditioned air taken in from the air inlet to the room, and a ventilation path for guiding conditioned air to the air outlet. An air conditioner having a first wind direction plate rotatably arranged at the air outlet and a wind direction variable portion for changing a wind direction of conditioned air sent from the air outlet, the air conditioner being mounted on a wall surface in a room. At

 The first wind direction plate is provided with a shielding position for shielding at least a part of the outlet, and the shielding position is rotated in one direction, and the air flow is adjusted so that the outlet air conditioned air is sent directly downward or rearward downward. A guiding position, a position rotating in one direction from the shielding position to guide airflow such that conditioned air is sent forward and downward from the outlet, and a position rotating in the other direction from the shielding position. A position for guiding the airflow so that the conditioned air is sent forward and downward, and a position for guiding the airflow so that the conditioned air is turned in the other direction from the shielding position and sent out upward and forward from the outlet. The feature is that you can take.

 [0045] According to this configuration, the air conditioner is mounted on the indoor wall surface, and when the operation is stopped, the first wind direction plate is disposed at the shielding position, and the air outlet is shielded. When the air conditioner starts, for example, a heating operation, the first wind direction plate rotates in one direction, and the outlet port conditioned air is sent directly downward or rearward downward. The conditioned air descends along the wall due to the Coanda effect, and then circulates on the floor and circulates indoors. In addition, the air further rotates in one direction, and the conditioned air is sent out downward from the outlet.

 It is. Also, for example, when the cooling operation is started, the first wind direction plate rotates in the other direction, and the conditioned air is sent upward and forward from the outlet. The conditioned air circulates along the ceiling surface due to the Coanda effect, descends along the wall facing the air conditioner, and circulates indoors. Further, the air is further rotated in the other direction, and the conditioned air is sent out forward and downward from the outlet.

[0046] The present invention also relates to a suction port for taking in indoor air and a harmony by taking in air from the suction port. An air outlet for sending the conditioned air into the room, a ventilation path for guiding the conditioned air to the air outlet, and a first wind direction plate rotatably disposed at the air outlet, and the air being sent from the air outlet. Air conditioner that is equipped with a wind direction variable unit that varies the wind direction of conditioned air

 A first wind direction plate that shields at least a part of the air outlet, and a position that guides an air flow such that the air outlet force conditioned air is rotated downward in one direction from the shield position and is sent downward and rearward. A position in which the air flow is guided in such a way that the conditioned air is sent forward and downward from the outlet by turning in one direction from the shielding position; A position to guide the air flow so that the air is sent forward and downward, and a position to guide the air flow so that the shielding position force rotates in the other direction and the outlet force is sent in the horizontal direction. It is characterized by being able to.

 [0047] According to this configuration, the air conditioner is mounted on the indoor wall surface, and when the operation is stopped or the like, the first wind direction plate is arranged at the shielding position, and the air outlet is shielded. When, for example, a heating operation is started by the air conditioner, the first wind direction plate rotates in one direction and the conditioned air at the outlet is sent downward and rearward. The conditioned air descends along the wall due to the Coanda effect, and then circulates on the floor and circulates indoors. In addition, the air is further rotated in one direction, and the conditioned air is discharged forward and downward. Further, for example, when the cooling operation is started, the first wind direction plate rotates in the other direction, and the outlet port conditioned air is sent out in the horizontal direction. The conditioned air flows along the ceiling due to the Coanda effect, descends along the wall facing the air conditioner, and circulates indoors. Further, the air is further rotated in the other direction, and the conditioned air at the outlet is sent forward and downward.

 [0048] Further, according to the present invention, in the air conditioner having the above-described configuration, the blowing path has a front guide portion for guiding conditioned air downward and forward, and the first wind direction plate is connected to the conditioned air from the outlet. When the air is sent downward and forward, a flow path is formed along the airflow that flows through the front guide portion, and when the blast air is sent directly downward or rearward and downward, the air flows through the front guide portion. It is characterized in that the airflow is curved by closing the front of the airflow in the traveling direction.

[0049] According to this configuration, the conditioned air flowing through the front guide portion is guided forward by the first wind direction plate. The air flows through the flow path along the direction guide portion and is sent downward and forward. In addition, the conditioned air flowing through the front guide portion is blocked by the first wind direction plate in the forward direction of the vehicle, curves, and is sent out directly downward or downward rearward.

 [0050] Further, in the air conditioner having the above-described configuration, the first wind direction plate is disposed to be upwardly convex at a position where the first wind direction plate rotates in one direction from the shielding position to guide the airflow forward and downward, and The force is characterized by being arranged downwardly convex at a position where it is turned in the other direction and guided forward and downward. According to this configuration, when the first wind direction plate is arranged convexly upward, the conditioned air is sent upward above the conditioned air sent downward and forwardly arranged downwardly.

 [0051] Further, the present invention provides the air conditioner having the above-described configuration, in which the heating operation is performed at the position where the first wind direction plate is rotated in one direction from the shielding position, and the cooling operation or the dehumidification is performed at the position where the first wind direction plate is rotated in the other direction. It is characterized by driving!

 [0052] Further, according to the present invention, in the air conditioner configured as described above, the first wind direction plate is disposed below the outlet.

 In addition, the wind direction variable portion has a second wind direction plate rotatably disposed above the air outlet. According to this configuration, the first wind direction plate arranged at the lower part of the air outlet takes each of the above positions, and the second air direction plate arranged at the upper part of the air outlet is arranged at a desired position, and the conditioned air is sent out in each direction. You.

 [0053] Further, in the air conditioner having the above configuration, the present invention provides the air conditioner, wherein the second wind direction plate has an upper shielding position for shielding an upper part of the air outlet, and an airflow inclined forward and downward with respect to the upper shielding position. And a position where the airflow is guided in a horizontal direction or an upper front direction inclining with respect to the upper shielding position. According to this configuration, when the first wind direction plate is arranged at the shielding position and the second wind direction plate is arranged at the upper shielding position, the air outlet is shielded. When the first wind direction plate is rotated with respect to the shielding position and the second wind direction plate is arranged at an angle with respect to the upper shielding position, conditioned air is sent forward and downward. When the first wind direction plate is turned in the other direction with respect to the shielding position and the second wind direction plate is arranged inclined with respect to the upper shielding position, the conditioned air is sent out in the horizontal direction or forward and upward.

Further, the present invention is characterized in that, in the air conditioner having the above configuration, a second wind direction plate is arranged at the upper shielding position when the conditioned air is sent directly downward or rearward downward. ing. According to this configuration, when the first wind direction plate is rotated in one direction with respect to the shielding position and the second wind direction plate is located at the upper shielding position, the conditioned air is sent directly downward or rearward downward.

 [0055] Further, the present invention provides the air conditioner having the above-described configuration, wherein when the conditioned air is sent directly downward or rearward downward, the second wind direction plate is inclined at a position substantially inverted with respect to the upper shielding position. And extending the upper wall of the blowing path. According to this configuration, when the first wind direction plate is rotated in one direction with respect to the shielding position, and the second wind direction plate is disposed at a position that is substantially inverted with respect to the upper shielding position and is inclined, the upper wall of the air flow path is formed. It is extended and conditioned air is delivered directly downward or backward. At this time, the second wind direction plate may be positioned in contact with the first wind direction plate. Further, the second wind direction plate may be positioned by contacting the upper wall of the air flow path.

 The invention's effect

 [0056] According to the present invention, when the blow-out force conditioned air is sent directly downward or rearward downward, isostatic lines of the static pressure distribution near the wind direction variable portion are formed in the direction along the flow path, so that the wind direction variable portion is formed. Does not cross the isobar. Therefore, the pressure loss exerted on the airflow is reduced, and the air volume at the same rotation speed of the blower fan can be increased. Therefore, it is possible to reduce noise by lowering the rotation speed of the blower fan required to send out a desired air volume.

 [0057] Further, according to the present invention, the variable wind direction portion forms a flow path along the airflow flowing through the front guide portion when the conditioned air is sent forward and downward from the outlet, and the conditioned air is discharged from the outlet. Since the airflow flowing through the front guide portion is curved when the airflow is sent directly downward or rearward downward, it is possible to easily change the wind direction.

Further, according to the present invention, since the forward direction of the airflow flowing through the front guide portion is closed by the variable wind direction portion, the airflow is easily curved by the air layer near the variable wind direction portion, and the vicinity of the variable wind direction portion is reduced. Isobars can be formed along the flow path.

Further, according to the present invention, since the high static pressure portion is formed in contact with the wind direction variable portion forward in the traveling direction of the airflow flowing through the front guide portion, the airflow is easily curved by the high static pressure portion and the high static pressure portion is formed. The isobar of the static pressure portion can be formed along the flow path. Further, according to the present invention, since the cross-sectional shape of the high static pressure portion is formed of a substantially arcuate bicuspid curve, it is possible to easily form isobars that do not intersect with the airflow. In addition, since the high static pressure portion has the maximum value of the static pressure at the center of the arc forming a substantially arcuate shape, the isobars on the upstream and downstream sides of the high static pressure portion are substantially symmetric.

 Is done. For this reason, the airflow can flow more smoothly along the isobar and the pressure loss can be further reduced. Therefore, it is possible to further increase the air volume of the conditioned air to be sent out.

[0061] Further, according to the present invention, the flow path of the conditioned air is narrowed by the high static pressure portion to make the flow passage area smaller than the inside of the front case, so that the wind speed of the airflow adjacent to the high static pressure portion does not change significantly. For this reason, the static pressure fluctuation of the airflow is suppressed, the airflow flows more smoothly, and the pressure loss can be further reduced. Therefore, the air-conditioning power can further increase the air volume of the conditioned air to be sent out.

 [0062] Further, when the flow path area narrowed by the high static pressure portion and narrowed at one end is enlarged again on the downstream side,

In addition, a so-called diffuser is formed by the enlarged flow path, and the static pressure of the blowing means can be increased to further increase the air volume.

[0063] Further, according to the present invention, since the wind direction variable portion is disposed so as to intersect with the extension of the lower inner wall of the front guide portion, the airflow can be reliably guided substantially directly downward or rearward downward.

Further, according to the present invention, since the variable air direction portion is formed by the movable inner wall of the air flow path, it is possible to easily change the air direction and allow the air flow to flow along the equal pressure line near the variable air direction portion. In addition, since the air flow path is extended by the variable air direction section, pressure loss when blowing forward and downward can be reduced. Further, since the wind direction variable portion generates the rotating wind direction plate force, the configuration can be further simplified.

[0065] Further, according to the present invention, since the wind direction variable section is varied based on the detection result of the static pressure detecting means, the airflow can be more reliably circulated along the isobar near the wind direction variable section.

Further, according to the present invention, since the indoor heating operation is performed by sending out the conditioned air, the large amount of warm air is sent out directly downward or backward downward, so that the living room can be efficiently air-conditioned.

Further, according to the present invention, since the wall surface of the air flow path curved by the wind direction variable section is formed by the difference in static pressure in the air flow path, the air flow flowing toward the wind direction variable section is distributed by the static pressure distribution. Does not intersect with the isobar. For this reason, the pressure loss exerted on the airflow is reduced, and the air volume at the same rotation speed of the blower fan can be increased. Accordingly, it is possible to reduce the number of rotations of the blower fan required to send out a desired air volume, thereby reducing noise.

 [0068] According to the present invention, the variable wind direction portion forms a flow path along the airflow flowing through the front guide portion to send out the conditioned air forward and downward by the outlet force, and the variable wind direction portion causes the front guide portion to move. Since the circulating air is curved and the conditioned air is sent directly downward or rearward below the outlet force, the pressure loss can be reduced both when blowing forward downward and when blowing directly downward or backward downward.

 [0069] According to the present invention, the wall of the air flow path is formed by closing the front in the direction of travel of the airflow flowing through the front guide by the variable wind direction section, so that the difference in static pressure in the vicinity of the variable wind direction section makes it easier. A wall surface can be formed, and the airflow can be curved along the wall surface.

 [0070] Further, according to the present invention, since the wall surface of the air flow path is formed by the high static pressure portion in contact with the wind direction variable portion in the forward direction of the airflow flowing through the front guide portion, the wall surface is easily formed by the high static pressure portion. Is formed, and the airflow can be curved along the wall surface.

 Further, according to the present invention, the flow path of the conditioned air is narrowed by the high static pressure portion to make the flow channel area narrower than the inside of the front case, so that the wind speed of the airflow adjacent to the high static pressure portion does not change significantly. Because of this, the airflow

 And the air flow can flow more smoothly, and the pressure loss can be further reduced. Therefore, the air volume of the conditioned air to be sent out by the air conditioner can be further increased.

 [0072] Further, according to the present invention, since the variable air direction portion is disposed so as to intersect with the extension of the lower inner wall of the front guide portion, the airflow can be reliably guided substantially directly downward or rearward downward.

 Further, according to the present invention, since the variable air direction portion is formed by the movable inner wall of the air flow path, the air direction can be easily changed, and a wall surface having a static pressure differential force can be formed near the variable air direction portion. . Further, since the air flow path is extended by the air direction variable section, pressure loss when blowing forward and downward can be reduced. In addition, since the wind direction variable portion generates the rotating wind direction plate force, the configuration can be further simplified.

Further, according to the present invention, since the position determining means for positioning the wind direction variable portion at the position where the wall surface is formed is provided, the arrangement of the wind direction variable portion where the wall surface of the air flow path is formed can be managed and assured. Indeed, a wall surface can be formed.

 According to the present invention, the first wind direction plate is turned in one direction to send conditioned air downward or rearward downward in one direction, and further turned in one direction to feed conditioned air downward and forward. Since it is sent out, the direction of the first wind direction plate can be changed quickly. In addition, the first wind direction plate is turned in the other direction and the conditioned air is sent out in the horizontal direction or the upper front direction, and the conditioned air is turned in the other direction and the conditioned air is sent out in the lower front direction. Direction can be changed quickly. Therefore, comfortable air conditioning can be performed quickly.

 Further, according to the present invention, when the conditioned air is sent forward and downward from the outlet, the forward direction of the airflow flowing through the front guide portion is closed by the first airflow direction plate, and the airflow is curved. By forming the isobars of the static pressure distribution along the air flow path, an airflow that does not cross the isobars can be formed. For this reason, the pressure loss exerted on the airflow is reduced, and the air volume at the same rotation speed of the blower fan can be increased. Therefore, it is possible to reduce the noise by lowering the rotation speed of the blower fan required to send a desired air volume.

 Further, according to the present invention, the first wind direction plate is turned upward in one direction from the shielding position, and is arranged so as to be convex upward at a position where the airflow is guided forward and downward. Since it is arranged convexly downward at the position where it is guided forward and downward, for example, the direction of conditioned air sent forward and downward during heating operation and cooling operation is changed, and air conditioning is performed with the optimal wind direction according to the operating situation. It can be carried out.

 According to the present invention, the heating operation is performed at the position where the first wind direction plate is turned in one direction from the shielding position, and the cooling operation or the dehumidifying operation is performed at the position turned in the other direction. The conditioned air is sent directly downward or rearward downward during operation, and the conditioned air is sent forward upward during cooling operation or dehumidification operation. Therefore, comfortable air conditioning can be performed.

 Further, according to the present invention, since the wind direction variable portion has the second wind direction plate rotatably disposed above the outlet, the wind direction can be easily changed by the first and second wind direction plates. .

Further, according to the present invention, the second wind direction plate has an upper shielding position for shielding the upper part of the outlet, a position for inclining the upper shielding position to guide the airflow forward and downward, and a position for the upper shielding position. It can be inclined to take a position that guides airflow in the horizontal direction or in the upper front. The wind direction can be easily changed in the horizontal direction or in the upper front direction.

 Further, according to the present invention, when the conditioned air is sent directly downward or rearward downward, the second airflow direction plate is arranged at the upper shielding position, so that the ventilation path can be extended without impairing the aesthetic appearance. Easy down

 Alternatively, conditioned air can be delivered downward and rearward.

[0082] According to the present invention, when the conditioned air is sent directly downward or rearward downward, the second wind direction plate is disposed at a position that is substantially inverted and inclined with respect to the upper shielding position, and is positioned above the ventilation path. Since the wall is extended, the conditioned air can be easily discharged directly downward or rearward and downward. Further, the generation of vortices can be suppressed, and the blowing efficiency can be improved.

Further, according to the present invention, since the second wind direction plate is positioned in contact with the first wind direction plate or the upper wall of the air flow path, the second wind direction plate is easily positioned and the isobar of the static pressure distribution is easily determined. Can be formed along the air flow.

 Brief Description of Drawings

 [FIG. 1] is a side cross-sectional view showing a state in which the indoor unit of the air conditioner according to the first embodiment of the present invention blows forward and downward.

 FIG. 2 is a side cross-sectional view showing a state in which the indoor unit of the air conditioner according to the first embodiment of the present invention blows rearward and downward.

 FIG. 3 is a diagram showing a static pressure distribution near the air outlet when the indoor unit of the air conditioner according to the first embodiment of the present invention is in a state of blowing downward rearward.

 FIG. 4 is a diagram showing a relationship between the number of rotations of a blower fan and an air volume of an indoor unit of the air conditioner according to the first embodiment of the present invention.

 FIG. 5 is a diagram showing a relationship between an air volume of a blower fan and a noise of an indoor unit of the air conditioner according to the first embodiment of the present invention.

 FIG. 6 is a perspective view showing the behavior of the airflow in the living room when the indoor unit of the air conditioner according to the first embodiment of the present invention is in the state of downward rearward blowing.

 FIG. 7 is a side sectional view showing a state of horizontal blowing of the indoor unit of the air conditioner according to the first embodiment of the present invention.

FIG. 8 is a rear lower view of an indoor unit of an air conditioner of another aspect according to the first embodiment of the present invention. It is a see-through | perspective perspective view which shows the behavior of the airflow in a living room in the state of a blowing.

 FIG. 9 is a side cross-sectional view showing a state in which the indoor unit of the air conditioner according to the second embodiment of the present invention blows forward and downward.

 FIG. 10 is a side cross-sectional view showing a state in which the indoor unit of the air conditioner according to the second embodiment of the present invention blows rearward and downward.

 FIG. 11 is a side cross-sectional view illustrating an operation of a wind direction variable unit of an indoor unit of an air conditioner according to a second embodiment of the present invention.

 FIG. 12 is a side cross-sectional view showing a state of downward front blowing during a heating operation of an indoor unit of an air conditioner according to a third embodiment of the present invention.

 FIG. 13 is a side cross-sectional view showing a rearward downward blowing state during a heating operation of an indoor unit of an air conditioner according to a third embodiment of the present invention.

 FIG. 14 is a side cross-sectional view showing a state of front downward blowing during a cooling operation of an indoor unit of an air conditioner according to a third embodiment of the present invention.

 FIG. 15 is a side cross-sectional view showing a state of horizontal blowing during a cooling operation of an indoor unit of an air conditioner according to a third embodiment of the present invention.

 FIG. 16 is a side cross-sectional view showing a state where an indoor unit of an air conditioner according to a third embodiment of the present invention is stopped.

 FIG. 17 is a side cross-sectional view showing a state of downward front blowing during a heating operation of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

 FIG. 18 is a side cross-sectional view illustrating another state of front downward blowing during the indoor unit heating operation of the air conditioner according to the fourth embodiment of the present invention.

 FIG. 19 is a side cross-sectional view showing a state of lower rearward blowing during a heating operation of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

 FIG. 20 is a side cross-sectional view showing another rearward downward blowing state during the heating operation of the indoor unit of the air conditioner according to the fourth embodiment of the present invention.

 FIG. 21 is a side cross-sectional view showing a state of blow-down immediately below an indoor unit of an air conditioner according to a fourth embodiment of the present invention during a heating operation.

[FIG. 22] is another view immediately below the indoor unit of the air conditioner according to the fourth embodiment of the present invention during the heating operation. It is a side sectional view showing the state of directional blowing.

 FIG. 23 is a side cross-sectional view showing a state of downward front blowing during a cooling operation of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

 FIG. 24 is a side cross-sectional view showing a state of upper front blowing during a cooling operation of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

 FIG. 25 is a transparent perspective view showing the behavior of airflow in a living room when the indoor unit of the air conditioner according to the fourth embodiment of the present invention is in the state of upward front blowing.

 FIG. 26 is a side cross-sectional view showing a state of horizontal blowing during a cooling operation of an indoor unit of an air conditioner according to a fourth embodiment of the present invention.

 FIG. 27 is a side sectional view showing a state of an indoor unit of an air conditioner according to a fourth embodiment of the present invention when the indoor unit is stopped.

 FIG. 28 is a side cross-sectional view showing a state of front downward blowing during a heating operation of an indoor unit of an air conditioner according to a fifth embodiment of the present invention.

 FIG. 29 is a side cross-sectional view showing a state of downward rearward blowing during a heating operation of an indoor unit of an air conditioner according to a fifth embodiment of the present invention.

 FIG. 30 is a side cross-sectional view showing another rearward downward blowing state during the heating operation of the indoor unit of the air conditioner according to the fifth embodiment of the present invention.

 FIG. 31 is a side cross-sectional view showing a state of blow-down immediately below during an indoor unit heating operation of an air conditioner according to a fifth embodiment of the present invention.

 [Fig. 32] Fig. 32 is a side cross-sectional view showing another directly downward blow-off state during the heating operation of the indoor unit of the air conditioner according to the fifth embodiment of the present invention.

 FIG. 33 is a side cross-sectional view showing another state of downward forward blowing during a heating operation of an indoor unit of an air conditioner according to a fifth embodiment of the present invention.

 [FIG. 34] FIG. 34 is a side cross-sectional view showing a state of downward front blowing during the cooling operation of the indoor unit of the air conditioner according to the fifth embodiment of the present invention.

 FIG. 35 is a side cross-sectional view showing a state of upper front blowing during a cooling operation of an indoor unit of an air conditioner according to a fifth embodiment of the present invention.

FIG. 36 shows a horizontal direction of the indoor unit of the air conditioner according to the fifth embodiment of the present invention during the cooling operation. It is a side sectional view showing the state of blowing.

 FIG. 37 is a side sectional view showing a state of an indoor unit of an air conditioner according to a fifth embodiment of the present invention when the indoor unit is stopped.

 FIG. 38 is a side cross-sectional view showing a state of front downward blowing during a heating operation of an indoor unit of an air conditioner according to a sixth embodiment of the present invention.

 [FIG. 39] FIG. 39 is a side cross-sectional view showing another state of front downward blowing during the heating operation of the indoor unit of the air conditioner according to the sixth embodiment of the present invention.

 [FIG. 40] FIG. 40 is a side cross-sectional view showing a state of lower rearward blowing during a heating operation of an indoor unit of an air conditioner according to a sixth embodiment of the present invention.

 [FIG. 41] FIG. 41 is a side cross-sectional view showing a state of blow-down immediately below during the heating operation of the indoor unit of the air conditioner according to the sixth embodiment of the present invention.

 [FIG. 42] FIG. 42 is a side cross-sectional view showing a state of upper front blowing during a cooling operation of an indoor unit of an air conditioner according to a sixth embodiment of the present invention.

 FIG. 43 is a side cross-sectional view showing a state of horizontal blowing during a cooling operation of an indoor unit of an air conditioner according to a sixth embodiment of the present invention.

 FIG. 44 is a side sectional view showing a state of an indoor unit of an air conditioner according to a sixth embodiment of the present invention when the indoor unit is stopped.

[45] is a side sectional view showing an indoor unit of an air conditioner of a comparative example to be compared with the air conditioner of the first embodiment.

[46] is a diagram showing a static pressure distribution near an air outlet of an indoor unit of an air conditioner of a comparative example to be compared with the air conditioner of the first embodiment.

 [FIG. 47] is a side cross-sectional view showing a state in which the indoor unit of the conventional air conditioner blows forward and downward.

 FIG. 48 is a side cross-sectional view showing a state in which an indoor unit of a conventional air conditioner is blown directly downward.

 [Fig. 49] is a side cross-sectional view showing a state in which the indoor unit of the conventional air conditioner blows rearward and downward.

[Fig.50] shows the area near the air outlet of the indoor unit of a conventional air conditioner in the forward downward blow state. It is a figure which shows the static pressure distribution of the side.

 [Fig. 51] Fig. 51 is a diagram showing a static pressure distribution near the air outlet when the indoor unit of the conventional air conditioner is in the state of blowing directly downward.

 [Fig. 52] Fig. 52 is a diagram showing a static pressure distribution near the air outlet when the indoor unit of the conventional air conditioner is blowing downward rearward.

 Explanation of symbols

 1 Indoor unit

 2 cabinets

 3 Front panel

 4 Suction port

 5 outlet

 6 Ventilation path

 7 Blower fan

 8 Air filter

 9 Indoor heat exchanger

 10 Drain nonone

 12 vertical louvers

 25 swirls

 61 Temperature sensor

 90 High static pressure part

 98 virtual plane

 110a, 110b, 111a, 111b, 112a, 112b, 113a, 113b, 113c, 114a, 114b, 115a, 115b Wind direction variable section

 BEST MODE FOR CARRYING OUT THE INVENTION

[0086] Hereinafter, embodiments of the present invention will be described with reference to the drawings. For convenience of explanation, in the following embodiments, the same parts as those in the conventional example shown in FIGS. 47 to 52 are denoted by the same reference numerals.

<First Embodiment> FIG. 1 is a side cross-sectional view showing the air conditioner of the first embodiment (showing a D section in FIG. 6 described later). The main unit of the indoor unit 1 of the air conditioner is held by a cabinet 2, and a front panel 3 provided with a suction port 4 on the upper surface side and the front side is detachably attached to the cabinet 2.

[0088] The cabinet 2 is provided with a claw (not shown) on the rear side surface, and is supported by engaging the claw with a mounting plate (not shown) attached to the side wall W1 of the living room. An outlet 5 is provided in a gap between the lower end of the front panel 3 and the lower end of the cabinet 2. Outlet 5 is a room

 It is formed in a substantially rectangular shape extending in the width direction of the inner unit 1, and is provided facing downward and forward.

[0089] Inside the indoor unit 1, a ventilation path 6 communicating from the suction port 4 to the outlet 5 is formed. A blower fan 7 for sending air is arranged in the blower path 6. As the blower fan 7, for example, a cross flow fan or the like can be used.

[0090] The blowing path 6 has a front guide portion 6a for guiding the air sent by the blowing fan 7 downward and forward. Downstream of the front guide section 6a, variable air direction sections 110a and 110b made of a flexible material are provided. The wall surfaces of the air flow path 6 between the front guide part 6a and the outlet 5 are formed by the wind direction variable parts 110a and 110b. The wind direction variable portions 110a and 110b are flexibly deformed and held at predetermined positions, so that the blowout angle of the blowout port 5 can be changed from the upper front to the lower rear.

[0091] Further, a static pressure detection sensor (not shown) for detecting a static pressure near the wind direction variable portion 110a on the front side is provided in the air blowing path 6. The variable wind direction units 110a and 110b can be arranged such that the static pressure near the variable wind direction unit 110a becomes a predetermined value by the detection of the static pressure detection sensor.

 [0092] The wind direction variable units 110a and 110b are varied using a static pressure detection sensor so that the static pressure near the wind direction variable unit 110a becomes a predetermined value, and the positions of the wind direction variable units 110a and 110b are stored as a database. You may. As a result, data corresponding to the operating conditions can be retrieved from the database and the wind direction variable units 110a and 110b can be arranged at predetermined positions, and the static pressure detection sensor can be omitted.

[0093] The position facing the front panel 3 is included in the air sucked from the suction port 4. An air filter 8 for collecting and removing dust is provided. Indoor heat exchange 9 is arranged between the blower fan 7 and the air filter 8 in the blower path 6. The indoor heat exchanger 9 is connected to a compressor (not shown) arranged outside, and a refrigeration cycle is operated by driving the compressor.

 [0094] By the operation of the refrigeration cycle, the indoor heat exchanger 9 is cooled to a temperature lower than the ambient temperature during cooling. During heating, the indoor heat exchanger 9 is heated to a temperature higher than the ambient temperature. A temperature sensor 61 is provided between the indoor heat exchanger 9 and the air filter 8 to detect the temperature of the sucked air, and the side of the indoor unit 1 controls the driving of the air conditioner. A control unit (not shown) is provided. Drain pans 10 are provided below the indoor heat exchanger 9 before and after the indoor heat exchanger 9 to collect dew from the indoor heat exchanger 9 during cooling or dehumidification.

When the air conditioner starts operating in the air conditioner having the above configuration, the blower fan 7 is driven to rotate, and the refrigerant from the outdoor unit (not shown) flows to the indoor heat exchanger 9 and the refrigeration cycle is performed. Is driven. As a result, air is sucked into the indoor unit 1 from the suction port 4, and dust contained in the air is removed by the air filter 8.

 [0096] The air taken into the indoor unit 1 exchanges heat with the indoor heat exchanger 9, and is cooled or heated. The conditioned air cooled or heated by the indoor heat exchanger 9 is regulated in the left and right direction and the up and down direction by the vertical louver 12 and the wind direction variable parts 110a and 110b, and is directed downward and forward as shown by arrow A. It is sent out indoors. As a result, the indoor unit 1 is in a state of front downward blowing that sends conditioned air downward and forward.

 [0097] At this time, the wind direction variable units 110a and 110b are arranged so as to extend the upper wall and the lower wall of the air flow path 6 substantially linearly. As a result, the variable wind direction parts 110a and 110b form a flow path along the airflow flowing through the front part inside 6a. Further, the air flow path 6 is formed by the wind direction variable sections 110a and 110b such that the cross-sectional area increases as the air flow path 6 goes downstream. For this reason, the wind direction variable portions 110a and 110b act as so-called diffusers, and the kinetic energy of the airflow flowing toward the wind direction variable portions 110a and 110b is converted into static pressure. Therefore, the flow rate of the conditioned air sent from the outlet 5 is increased.

[0098] Immediately after the operation of the air conditioner is started, it is necessary to circulate the indoor air promptly. this Therefore, the air that has been heat-exchanged in the indoor heat exchange 9 by increasing the rotation speed of the blower fan 7 is sent out from the outlet 5 vigorously. As a result, the conditioned air is sent downward from the outlet 5 at a wind speed of, for example, about 6-7 mZ seconds as shown by the arrow A, and circulates in the room.

 [0099] Further, in the case of the heating operation, FIG. 2 shows the state after the elapse of a predetermined time after the heating operation is started or when the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than the predetermined temperature. Thus, the wind direction variable sections 110a and 110b are deformed. Then, as shown by arrow C, the conditioned air is sent from the outlet 5 to the rear downward (toward the wall) at a wind speed of about 5-6 mZ seconds, for example.

 [0100] The variable air direction portion 110a constituting the upper wall of the air flow path 6 has a concave side facing the inside of the air flow path 6, and closes the front in the traveling direction of the airflow flowing through the front guide section 6a. The wind direction variable portion 11 Ob constituting the lower wall of the air flow path 6 has a convex side on the side facing the air flow path 6. The downstream ends of the wind direction variable units 110a and 110b are arranged rearward and downward. Thereby, the airflow flowing through the front guide portion 6a is curved by the wind direction variable portions 110a and 110b, and is guided downward and rearward.

 [0101] Fig. 3 shows the static pressure distribution of the air blowing path 6. A high static pressure portion 90, which is higher than the static pressure of the front guide portion 6a, is formed on the inner surface side of the wind direction variable portion 110a in contact with the wind direction variable portion 110a. The position of the wind direction variable sections 110a and 110b is adjusted according to the detection result of the static pressure detection sensor (not shown) that detects the static pressure of the air blowing path 6, and the equal pressure line 90a of the high static pressure section 90 faces the wind direction variable section 110a. It is formed along the flowing airflow. That is, the isobar 90a of the high static pressure section 90 is formed substantially parallel to the line connecting the end of the front guide section 6a and the end of the wind direction variable section 110a, and the air flow is substantially parallel to the isobar 90a near the high static pressure section 90. Has become.

 [0102] For this reason, the high-pressure section 90 acts as a hydrodynamic wall surface, and the variable wind direction sections 110a and 110b can smoothly change the sending direction of conditioned air, thereby suppressing an increase in pressure loss. Therefore, the conditioned air can be sent backward and downward without reducing the air volume. When the conditioned air is sent almost directly downward, the isostatic line 90a of the high static pressure section 90 is formed along the air flow depending on the direction of the wind direction variable sections 110a and 110b in the same manner as above, and the conditioned air is not reduced. Can be sent out almost directly below.

[0103] Fig. 4 shows the relationship between the rotation speed of the blower fan 7 of the indoor unit 1 of the air conditioner of the present embodiment and the air volume. The vertical axis shows the air volume (unit: m ³ Zmin), and the horizontal axis shows the rotation speed ( Unit: rpm). In the figure, K1 indicates the direction when the blowing wind direction is backward and downward (wall blowing, see FIG. 2). For comparison, K2, Κ3, and Κ4 correspond to the case where the airflow direction of the conventional air conditioner is forward downward (at maximum airflow, see Fig. 47), directly downward (see Fig. 48), and backward downward (see Fig. 49). It represents.

 [0104] According to the figure, in the conventional air conditioners (# 2, # 3, # 4), as the wind direction change angle near the outlet 5 increases, the air volume at the same rotation speed decreases. This is due to the pressure loss when the airflow passes through the high static pressure section 90.The higher the static pressure of the high static pressure section 90 through which the airflow passes, the higher the pressure loss and the lower the air volume. .

 [0105] On the other hand, in the present embodiment (K1), the air volume is approximately the same as that in the forward downward blowing (Κ2) in the case where the blowing direction is not changed, even though the blowing direction is rearward downward (wall-direction blowing). Can be obtained. Therefore, it is possible to greatly improve the blowing efficiency at the time of rearward downward blowing.

FIG. 5 shows the relationship between the air volume of the blower fan 7 of the indoor unit 1 of the air conditioner of the present embodiment and the noise. The vertical axis indicates noise (unit: dB), and the horizontal axis indicates airflow (unit: m ³ Zmin). In the same manner as above, K1 in the figure indicates the case where the blowing wind direction is rearward downward (wallward blowing, see Fig. 2), and K2, Κ3 and Κ4 indicate that the blowing air direction of the conventional air conditioner is forward and downward. (At maximum air volume, see Fig. 47), right below (see Fig. 48), and downward (see Fig. 49).

 [0107] According to the figure, in the conventional air conditioners (# 2, # 3, # 4), the noise at the same air volume increases as the wind direction change angle near the outlet 5 increases. This is due to a decrease in the air flow due to the pressure loss when the airflow passes through the high static pressure section 90, and the higher the static pressure of the high static pressure section 90 through which the airflow passes, the higher the pressure loss and the airflow. Decrease. As a result, it is necessary to increase the rotation speed of the blower fan 7 in order to secure a desired air volume, and this is a force that increases noise.

[0108] On the other hand, in the present embodiment (K1), although the blowing direction is backward and downward (wall-direction blowing), the blowing direction is not changed, and the blowing direction is substantially the same as when blowing forward and downward (Κ2). Noise can be realized. Therefore, the quietness at the time of rearward downward blowing can be significantly improved. FIG. 45 shows an indoor unit 1 of an air conditioner of a comparative example for comparison with the present embodiment. In the figure, a physical wall surface is formed by a wind direction variable unit 110a instead of a hydrodynamic wall surface formed by a high static pressure unit 90. FIG. 46 shows the static pressure distribution near the wind direction variable units 110a and 110b at this time. As shown in the figure, a high static pressure portion 90 having an isobar that intersects the streamline of the air flow is formed in the flow path. Therefore, the pressure loss increases, and the air volume decreases drastically to about the same level as the rear downward blowing (K4) of the conventional air conditioner shown in FIGS. 4 and 5 described above.

 In FIG. 2, the high static pressure portion 90 is formed in a substantially arcuate bicuspid curve, and the high static pressure portion 90 has the highest static pressure at the center of the arc forming the substantially arcuate shape. Thus, the upstream and downstream sides of the high static pressure section 90 have a substantially symmetrical static pressure distribution. Accordingly, the airflow can flow more smoothly along the isobar 90a, reducing the pressure loss and further increasing the air volume of the conditioned air delivered by the air conditioner.

 [0111] Further, the inner wall of the variable wind direction portion 110a on the side facing the front guide portion 6a is formed so as to face downward as it goes downstream, and the lower wall of the front guide portion 6a is Further, they are arranged so as to intersect with the virtual surface 98 extending outward. Thereby, the lower end of the wind direction variable portion 110a is disposed below the virtual surface 98, and the airflow is reliably guided substantially downward or rearward downward. Therefore, an airflow is not sent in an unintended direction, and a highly reliable air conditioner can be obtained.

 [0112] Fig. 6 shows the behavior of the airflow in the living room R at the time of downward rear blowing. The conditioned air descends along the side wall W1 and travels down the floor F, the side wall W2 facing the side wall W1, and the ceiling wall S in order as shown by the arrow C, and returns to the suction port 4. As a result, it is possible to prevent the sent out warm air from rising and prevent a decrease in the heating efficiency due to the short circuit, and to sufficiently warm the lower part of the living room R to improve comfort.

 [0113] In the heating operation, when the temperature sensor 61 detects that the temperature difference between the temperature of the air taken in from the suction port 4 and the set temperature has become small, the blowing amount is gradually reduced by adjusting the blowing fan 7 Is done. Even if the air volume decreases, the conditioned air (warm air) sent downward from indoor unit 1 will not

Continue to descend along the side wall W1 without rolling up due to the under effect and directly descend to the living space Without pouring, it reaches your feet along floor F. Therefore, comfort is improved without discomfort caused by direct wind blow to the user.

[0114] Further, since the discomfort caused by the direct blow of the wind to the user is eliminated and the noise reduction is ensured, even if the temperature difference between the temperature of the air taken in from the suction port 4 and the set temperature becomes small, There is no need to reduce the air volume. Therefore, it is possible to always supply a large amount of conditioned air into the room R.

 [0115] The shape of the wind direction variable units 110a and 110b can be set by a user operating a remote controller (not shown). Thereby, the wind direction of the conditioned air can be arbitrarily selected by the user.

 [0116] According to the present embodiment, when the blow-out force conditioned air is sent directly downward or rearward downward, the airflow flowing toward the wind direction variable sections 110a and 110b is different from the airflow flowing through the front guide section 6a. Bend. At this time, the high static pressure portion 90 in contact with the wind direction variable portion 110a forms a wall surface of the air flow path having a difference in static pressure. Accordingly, since the isobar 90a of the high static pressure portion 90 does not cross the main stream of the airflow flowing in the airflow path 6 while bending the airflow path 6, the pressure loss applied to the airflow can be significantly reduced.

 [0117] As a result, conditioned air with a large air volume can be sent out despite a large change in the wind direction. In the high static pressure section 90, the low-speed and low-energy airflow, which is also separated from the mainstream force, flows along the wind direction variable section 110a, so that the influence on the pressure loss is reduced.

 The main flow of the conditioned air flowing toward the variable wind direction sections 110a and 110b flows through the space surrounded by the high static pressure section 90 and the lower wall surface of the ventilation path 6. That is, the wall surface of the flow path is formed by the high static pressure portion 90. Accordingly, since the airflow is not in contact with the variable airflow direction portion 110a, loss due to viscosity is reduced, and the airflow can be further increased.

 [0119] Further, by closing the front in the traveling direction of the airflow flowing through the front guide portion 6a by the wind direction variable portion 110a, the high static pressure portion 90 having the isobar 90a along the airflow is easily formed to form the wall of the airflow channel. Can be formed.

[0120] The high static pressure section 90 forms the wall surface of the flow path, and the high static pressure section 90 narrows the flow path of the conditioned air to form a nozzle shape, so that the flow path area is larger than that of the front guide section 6a. Narrows. For this reason, the nozzle By the action, the fluid of the high energy is discharged from the outlet 5. As a result, the wind speed of the air flow adjacent to the high static pressure portion 90 does not change significantly, and the static pressure fluctuation of the air flow is suppressed, so that the air flow flows more smoothly and the pressure loss can be further reduced. Therefore, the air volume of the conditioned air sent from the air conditioner can be further increased.

 [0121] Further, the flow path area narrowed at one end by the high static pressure part 90 is enlarged again on the downstream side of the wind direction variable parts 110a and 11 Ob. As a result, the cross-sectional area of the flow passage decreases as it goes downstream, and a minimum cross-sectional area (hereinafter referred to as a “throat part”) is formed. For this reason, a so-called diffuser is formed by the enlarged flow path, and the static pressure of the blower fan 7 can be increased to further increase the air volume. Also, as shown in FIG. 3, since the high static pressure portion 90 does not occur in the throat of the flow path and no pressure loss occurs, the flow path is bent at that position, so that the pressure loss does not occur. A part can be formed.

 [0122] Further, since the air outlet 5 is provided with the flexible wind direction variable portions 110a and 110b that can be flexibly deformed, the wall surface of the air blowing path 6 can be easily changed. Because of this,

 Can easily be changed.

[0123] In the case of the cooling operation, when a predetermined time has elapsed since the start of the cooling operation or when the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, As shown in FIG. 7, variable wind direction units 110a and 110b are arranged. As a result, conditioned air is sent from the outlet 5 in the horizontal direction as shown by the arrow D, for example, at a wind speed of about 5-6 mZ seconds.

[0124] That is, the wind direction variable portion 110a extending the upper wall of the front guide portion 6a is arranged in the horizontal direction. The variable air direction portion 110b extending the lower wall of the front guide portion 6a is arranged with its downstream end directed horizontally so that the inside of the air passage 6 is concave. When the conditioned air flows along the wind direction variable portions 110a and 110b, a substantially arcuate high static pressure portion 90 having a bicuspid curve force is formed in the concave portion of the wind direction variable portion 110b.

Therefore, similarly to the above, when the number of rotations of the blower fan 7 is the same, conditioned air having a larger air volume can be sent from the outlet 5 in the horizontal direction as compared with the conventional case, and the same In the case of the air volume, the conditioned air can be sent out from the outlet 5 in the horizontal direction with lower noise than in the past. [0126] As another aspect of the present embodiment, the air conditioner may be configured like a so-called corner air conditioner. That is, as shown in FIG. 8, the indoor unit lb may be mounted at a position in contact with the ceiling wall S at a corner L where two adjacent side walls W3 and W4 of the living room R intersect. In this case, too, the conditioned air blows rearward and downward toward the outlet L at the corner L, so that the conditioned air descends along the corner L and the side walls W3 and W4, and as shown by the arrow C, the floor F and the side. Return to the suction port 4 along the side walls W5 and W6 and the ceiling wall S facing the walls W3 and W4 sequentially. As a result, the warm air circulates in the room R to perform the heating operation. Therefore, the above effects can be obtained.

 <Second Embodiment>

 Next, FIG. 9 is a side sectional view showing the indoor unit 1 of the air conditioner of the second embodiment. The same parts as those in the first embodiment shown in FIGS. 1 to 8 are denoted by the same reference numerals. In the present embodiment, variable wind direction units 11 la and 11 lb are provided instead of the flexible wind direction variable units 110 a and 110 b of the first embodiment, which extend the air supply path 6 by rotation. Other parts are the same as in the first embodiment.

 [0128] The variable wind direction portion 111b is rotatably supported by a rotation shaft ll ld, and the variable wind direction portion 111a is rotated by a rotation shaft 11 le via an arm 11 lc connected to the rotation shaft 11 Id. It is supported as much as possible. The rotation shaft 11 Id is rotated by a drive motor 11 If via a gear (not shown). In addition, a position regulating portion 11lg for regulating the position of the wind direction variable portion 11la is provided at the tip of the wind direction variable portion 11la.

 [0129] When the operation of the air conditioner is started as shown in the figure, the wind direction variable parts ll la and 111b are stored below the cabinet 2, and as shown by arrow A, conditioned air flows forward and downward from the outlet 5 as shown by arrow A. Sent out. In the case of the heating operation, if a certain period of time has elapsed since the start of the operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, as shown in FIG. The wind direction variable parts ll la and 111b are developed. As a result, conditioned air is sent downward and rearward as shown by arrow C. For example, it is sent out to the side wall W1 at a wind speed of about 5-6 mZ seconds, and circulates along the side wall W1 by the Coanda effect.

[0130] Figs. 11 (a) to 11 (f) show the operation of the wind direction variable units ll la and 11 lb. Fig. 11 (a) shows a state where the wind direction variable parts ll la and 11 lb are expanded (see Fig. 10). That is, the wind direction variable section 111 a is in contact with the upper wall of the front guide portion 6a, extends the upper wall of the ventilation path 6 in the same manner as in the first embodiment, and is disposed at a position to block the front of the front guide portion 6a in the forward direction of the airflow.

 The wind direction variable section 111b is arranged at a position extending the lower wall of the air flow path 6 as in the first embodiment.

 FIG. 11B shows a state in which the drive motor 11 If has started driving. When the rotation axis l ld rotates in the J direction by the drive of the drive motor 11 If, the wind direction variable parts l la and 111 b and the arm 111 c rotate in the J direction about the rotation axis 11 Id. As shown in FIGS. 11 (c) and 11 (d), when the rotation shaft 11Id is further rotated by driving the driving motor 11If, the wind direction variable portion plate 11lb contacts the lower surface of the cabinet 2.

 [0132] When the rotation axis lid further rotates, the wind direction variable portion 111a rotates, and the position regulating portion 11lg contacts the lower surface of the cabinet 2 as shown in Fig. 11 (e). As the arm portion 111c continues to rotate, the position restricting portion 11If slides on the cabinet 2, and the wind direction variable portion 11lb rotates in the K direction. Then, as shown in FIG. 11 (f), the wind direction variable section 111a comes into contact with the wind direction variable section 111b, and the wind direction variable sections 111a and 111b are in the housed state (see FIG. 9).

 [0133] When expanding the wind direction variable section l l la, 11 lb, the operation is performed in the reverse order to the above. At this time, the variable air direction portion 11 la is positioned in contact with the upper wall of the air flow path 6. Therefore, the upper wall of the air flow path 6 constitutes the positioning means of the variable air direction section 11 la, and the variable air direction section 111 a is arranged at a position where the wall of the air flow path is formed by the difference in static pressure.

 [0134] Thereby, it is possible to manage the arrangement of the airflow direction variable portion 11la and reliably form the wall surface of the air flow path. Further, the rotation of the wind direction variable portion 111b in the counterclockwise direction is also restricted by a stopper (not shown) as shown in FIG. 11A. Thus, a positioning means for positioning the wind direction variable portion 11 lb at a predetermined position by the stove is formed.

[0135] In Fig. 10, the air flow direction variable portion 111a has a concave air flow path 6 side, and the downstream end is directed rearward and downward. The airflow direction variable portion 111b is arranged by extending the lower wall of the airflow path 6 as in the first embodiment. In addition, the variable air direction portion 111b has a convex shape on the side of the air flow path 6 and is disposed at a position where the lower wall portion of the air outlet 5 is extended smoothly so that the downstream end is directed rearward and downward. Then, as in the first embodiment, a substantially arcuate high static force consisting of a bicuspid curve force in contact with the wind direction variable portion 11 la when the conditioned air flows facing the wind direction variable portion ll la and 11 lb similarly to the first embodiment. The pressure part 90 is formed.

 [0136] Thus, the isobar 90a (see FIG. 3) of the high static pressure section 90 is formed along the airflow facing the wind direction variable sections 11 la and 11 lb. For this reason, the high-pressure section 90 forms the hydrodynamic wall of the air flow path due to the difference in static pressure in the air blowing path 6, and the conditioned air smoothly changes the delivery direction, thereby preventing pressure loss from occurring. It is sent from 5 backward and downward. It is also possible to arrange the wind direction variable sections 11 la and 11 lb with the tips thereof directed substantially directly downward, and to send conditioned air from the outlet 5 substantially downward.

 [0137] Further, the flow path is narrowed by the high static pressure part 90, and the flow path is enlarged again on the downstream side.

 Furthermore, the variable wind direction portion 11 la is arranged so as to intersect with a virtual surface 98 that extends the lower wall of the front guide portion 6 a outward from the outlet 5. Therefore, the same effect as in the first embodiment can be obtained. The setting of the vertical louver 12 and the wind direction variable units 11 la and 11 lb can be changed by the user operating the remote controller.

 [0138] <Third embodiment>

 Next, FIG. 12 is a side sectional view showing the indoor unit 1 of the air conditioner of the third embodiment. The same parts as those in the second embodiment shown in FIGS. 9 to 11 are denoted by the same reference numerals. In the present embodiment, the variable wind direction is rotatably supported instead of the variable wind direction portions l la and 111b of the second embodiment.

 Parts 112a and 112b are provided. Other parts are the same as in the second embodiment.

[0139] The wind direction variable portion 112b extends the lower wall of the front guide portion 6a, and is pivotally supported by the cabinet 2 by a rotating shaft 112f rotated by driving of a drive motor (not shown). An upper arm 112c is rotatably connected to the rotation shaft 112f, and a lower arm 112d is rotatably connected to the upper arm 112c via an arm joint 112e. The wind direction variable portion 112a (first wind direction plate) is disposed at the outlet 5 and is rotatably supported by the lower arm 112d by a rotation shaft 112g rotated by a drive motor (not shown). It consists of a wind direction plate that changes the wind direction by changing the wind direction.

[0140] When the heating operation is started, the upper arm 112c and the lower arm 112d are extended as shown in the figure. As a result, the wind direction variable portion 112a having a curved cross-sectional shape is arranged along the airflow flowing through the front guide portion 6a, with the front end directed downward and the lower surface side recessed. Similarly, the cross-sectional shape The curved wind direction variable portion 112b is disposed so that the tip is directed downward and the air flow path 6 side is made convex, and the lower wall of the air flow path 6 is extended substantially linearly. As a result, the wind direction variable portions 112a and 112b form a flow path along the airflow flowing through the front guide portion 6a, and send out conditioned air downward and forward as indicated by arrow A.

[0141] Also, since the air flow path 6 side of the variable air direction section 112b is convex, the cross-sectional area increases as the flow path of the conditioned air goes downstream. As a result, when airflow flows through this portion, kinetic energy is converted to static pressure, and acts as a so-called diffuser. For this reason, the kinetic energy of the airflow flowing toward the wind direction variable portions 112a and 112b is converted into static pressure. Therefore, the flow rate of the conditioned air sent from the outlet 5 is increased.

 [0142] If a certain time has elapsed since the start of the heating operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Parts 1 12a and 112b are arranged. That is, the wind direction variable section 112a is disposed at a position where one end thereof comes into contact with the upper wall of the air flow path 6 by driving the drive motor to extend the upper wall of the air flow path 6. The other end of the wind direction variable section 112a is arranged rearward and downward. Further, the tip of the wind direction variable section 112b is arranged rearward and downward so that the blow path 6 side is convex.

 At this time, the variable air direction unit 112a is positioned in contact with the upper wall of the air flow path 6. Therefore, the upper wall of the air flow path 6 constitutes a means for positioning the wind direction variable section 112a, and the wind direction variable section 112a is arranged at a position where the wall of the air flow path is formed by the difference in static pressure. This makes it possible to manage the arrangement of the wind direction variable portions 112a and reliably form the wall surface of the air flow path. Further, the clockwise rotation of the wind direction variable section 112b is restricted by a stopper (not shown) from the position shown in FIG. As a result, a positioning means for positioning the wind direction variable portion 112b at a predetermined position by the stove is formed. Puru.

[0144] The forward wind direction of the airflow flowing through the front guide portion 6a is closed by the wind direction variable portion 112a, and a substantially arcuate high static pressure portion 90 having a bicuspid curve force in contact with the wind direction variable portion 112a is formed. In the high static pressure portion 90, the isobar 90a (see FIG. 3) is formed along the flow direction of the conditioned air facing the wind direction variable portions 112a and 112b as in the first and second embodiments. For this reason, the high-pressure section 90 forms a hydrodynamic wall of the air flow path due to the difference in static pressure in the blowing path 6, and the conditioned air is smoothly changed in the sending direction and sent out from the outlet 5 to the rear downward. You. [0145] At this time, since the contact portion between the upper wall of the front guide portion 6a and the wind direction variable portion 112a does not have a smooth curved surface, a vortex 25 is generated in the high static pressure portion 90. Also, the air blowing efficiency is slightly reduced. While increasing the pressure, it is possible to suppress an increase in pressure loss more than before and to obtain a blowing efficiency substantially equal to that of the first and second embodiments. The tip of the wind direction variable section 112a, 112b is almost directly downward

 The conditioned air may be sent from the outlet 5 substantially downward from the outlet 5.

[0146] Further, the flow path is narrowed by the high static pressure part 90, and the flow path is enlarged again on the downstream side.

 Further, the wind direction variable portion 112a is arranged so as to intersect with a virtual surface 98 which extends the lower wall of the front guide portion 6a outward from the outlet 5 to the outside. Therefore, the same effects as those of the first and second embodiments can be obtained.

 Note that the same characteristics as those of the first embodiment shown in FIGS. 3 and 4 described above are obtained, and the forward and downward blowing when the wind direction is not changed even though the blowing direction is rearward and downward. Similar airflow and quietness can be obtained.

 When the cooling operation is started by the air conditioner having the above configuration, the wind direction variable units 112a and 112b are arranged as shown in FIG. That is, the wind direction variable portion 112a is arranged so that the front end thereof is directed forward and downward along the front guide portion 6a with the upper arm 112c and the lower arm 112d extended so that the lower surface side is convex.

 [0149] The wind direction variable section 112b also retracts the airflow force sent from the outlet 5 and is housed below the cabinet 2. Then, the conditioned air is sent downward and forward as indicated by arrow A. As a result, the conditioned air is sent out above the front downward blow during the heating operation, and the low-temperature conditioned air descends by its own weight and is diffused into the room. In addition, since the variable wind direction unit 112b is housed below the cabinet 2, it is possible to prevent exposure to the variable wind direction unit 112b during cooling.

[0150] If a certain period of time has elapsed since the start of the cooling operation or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction can be changed as shown in FIG. Parts 112a and 112b are arranged. That is, the lower direction side of the variable air direction portion 112a is convex when the upper arm 112c and the lower arm 112d are extended, and the upstream end is substantially parallel to the airflow flowing through the airflow path 6 and bisects the airflow. It is arrange | positioned so that an edge part may turn forward in the horizontal direction. [0151] Further, the airflow direction variable portion 112b also retracts the airflow force sent from the air outlet 5, and is housed below the cabinet 2. Then, conditioned air is sent from the outlet 5 in the horizontal direction as indicated by an arrow D, for example, at a wind speed of about 5-6 mZ seconds.

 [0152] Fig. 16 shows a state when the operation of the air conditioner is stopped. When the operation of the air conditioner is stopped, the upper arm 112c and the lower arm 112d are in a folded state, the variable air direction unit 112b is arranged in the air supply path 6, and the air outlet 5 is closed by the variable air direction unit 112a. As a result, the inside of the indoor unit 1 cannot be visually recognized. The positions of the vertical louver 12 and the wind direction variable units 112a and 112b can be changed by operating the remote controller by the user. Thereby, the wind direction of the conditioned air can be arbitrarily selected by the user.

 [0153] According to the present embodiment, the wind direction variable portion 112a (first wind direction plate) is rotated clockwise in the drawing from the shielding position shown in Fig. 16 during the heating operation, and is arranged in the state shown in Figs. 12 and 13. You. As a result, during the heating operation, the wind direction between the lower front and the lower rear can be quickly changed. Further, during the cooling operation, the air conditioner rotates counterclockwise in the drawing as compared with the heating operation, and is arranged in the state shown in FIGS. 14 and 15. As a result, during the cooling operation, the wind direction between the lower front and the horizontal direction can be quickly changed. Therefore, comfortable air conditioning can be quickly performed. Note that, during dehumidification operation, the wind direction variable units 112a and 112b are arranged similarly to the cooling operation.

 [0154] <Fourth embodiment>

 Next, FIG. 17 is a side sectional view showing the indoor unit 1 of the air conditioner of the fourth embodiment. The above

 Parts similar to those of the third embodiment shown in FIGS. 12 to 16 are denoted by the same reference numerals. In the present embodiment, wind direction variable portions 113a, 113b, 113c which are rotatably supported are provided instead of the wind direction variable portions 112a, 112b of the third embodiment. In addition, the upper wall of the blowing path 6 is inclined upward near the outlet 5. Other parts are the same as in the third embodiment.

[0155] The variable wind direction unit 113c extends the lower wall of the front guide unit 6a, and is pivotally supported by the cabinet 2 by a rotating shaft 113f that is rotated by driving of a drive motor (not shown). The variable wind direction portions 113a (second wind direction plate) and 113b (first wind direction plate) are arranged at the air outlet 5 and supported rotatably by rotating shafts 113d and 113e rotated by a drive motor (not shown). In addition, the direction of the wind is changed by driving the drive motor to change the wind direction. [0156] Further, the cross-sectional shapes of the wind direction variable units 113b and 113c are curved, and one surface is formed as a convex curved surface and the other surface is formed as a concave curved surface. The variable wind direction portion 113a has a substantially flat surface on one surface (lower surface in the drawing) and a gentle convex curved surface on the other surface (upper surface in the drawing), and is supported by a rotating shaft 113d near a substantially central portion. ing.

 [0157] In the air conditioner having the above configuration, when the heating operation is started, the wind direction variable units 113a, 113b, and 113c are arranged as shown in the figure. That is, the wind direction variable section 113a is arranged on the flat side facing rearward and downward by the drive of the rotating shaft 113d, and on the curved side facing upward and forward. The wind direction variable portion 113b is driven by the rotation shaft 113e, and its upstream end is substantially parallel to the airflow flowing through the airflow path 6 and divided into two. In addition, the upper front side of the wind direction variable section 113b is arranged in a convex shape, and the downstream end is directed forward and lower.

 [0158] The variable air direction unit 113c is arranged so that the tip is directed downward and the air blowing path 6 side is convex. Then, the conditioned air is sent downward and forward as indicated by arrow A. As a result, the indoor unit 1 is in a state of front downward blowing that sends conditioned air forward and downward.

 [0159] Further, since the air flow path 6 side of the wind direction variable section 113c is convex, the cross-sectional area increases as the flow path of the conditioned air goes downstream. As a result, when airflow flows through this portion, kinetic energy is converted to static pressure, and acts as a so-called diffuser. For this reason, the air volume of the blower fan 7 is increased!

 [0160] Further, as shown in FIG. 18, the air outlet 5 can be narrowed by the wind direction variable units 113a and 113c. That is, the wind direction variable portion 113a has a flat surface facing upward and forward, and a curved surface facing downward and downward. The airflow direction variable portion 113c is arranged upward from FIG. 17, and the flow area of the conditioned air formed between the airflow direction variable portion 113c and the airflow direction variable portion 113a is reduced. The wind direction variable section 113b is arranged along the airflow flowing between the wind direction variable sections 113a and 113c.

 [0161] As a result, when the airflow flows between the wind direction variable units 113a and 113c, the static pressure is converted into kinetic energy. Therefore, the air volume of the blower fan decreases, the blown air velocity increases, and the reach of the airflow can be extended.

[0162] If a certain period of time has elapsed since the start of the heating operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Parts 113a, 113b and 113c are arranged. That is, the wind direction variable section 113a is driven by the drive motor. With the flat side facing the front, one end abuts against the wind direction variable portion 113b and is positioned. As a result, the wind direction variable portion 113b is disposed at a position extending the upper wall of the air flow path 6.

[0163] The other end of the wind direction variable portion 113a is disposed downward so as to be in contact with the rotating shaft 113e.

 The wind direction variable portion 113b is arranged such that the tip is directed rearward and downward so that the side of the air passage 6 is concave.

 The wind direction variable section 113c is disposed with its tip directed rearward and downward so that the blow path 6 side is convex.

 [0164] At this time, the wind direction variable portion 113a is positioned in contact with the wind direction variable portion 113b. Therefore, the variable wind direction unit 113b constitutes a means for positioning the variable wind direction unit 113a, and the variable wind direction unit 113a is arranged at a position where the wall of the air flow path is formed by the difference in static pressure. This makes it possible to manage the arrangement of the wind direction variable portions 113a and reliably form the wall surface of the air flow path. Further, the clockwise rotation of the wind direction variable portion 113c is restricted by a stopper (not shown) from the position shown in FIG. Accordingly, a positioning means for positioning the wind direction variable portion 113c at a predetermined position by the stove is formed. Note that the wind direction variable section 113b is arranged at the position shown in the figure by controlling the rotation amount of the drive motor.

 [0165] As a result, the forward direction of the airflow flowing through the front guide portion 6a is closed by the wind direction variable portions 113a and 113b, and a substantially arcuate high static force having a bicuspid curve force in contact with the wind direction variable portions 113a and 113b. A pressure part 90 is formed. The isobar 90a (see FIG. 3) of the high static pressure section 90 is formed along the flow direction of the conditioned air facing the wind direction variable sections 113a, 113b, 113c as in the first to third embodiments. For this reason, the high static pressure part 90 becomes a hydrodynamic wall surface, and the conditioned air is smoothly changed in the sending direction and sent out from the outlet 5 to the rear downward.

 [0166] At this time, since the contact portion between the upper wall of the front guide portion 6a and the wind direction variable portion 113a is not formed by a smooth curved surface, a vortex 25 is generated in the high static pressure portion 90, and the first and second implementations are performed. Ventilation efficiency is slightly lower than the form. While increasing the pressure, it is possible to suppress an increase in pressure loss as compared with the related art, and to obtain a blowing efficiency substantially equal to the first and second embodiments.

 [0167] Further, the flow path is narrowed by the high static pressure part 90, and the flow path is enlarged again on the downstream side.

Further, the wind direction variable portion 113b is disposed so as to intersect with a virtual surface 98 that extends the lower wall of the front guide portion 6a further outside the outlet 5. Therefore, the same effect as in the first to third embodiments can be obtained. Obtainable.

 [0168] As shown in FIG. 20, the plane side of the wind direction variable section 113a may be arranged so as to face the air blowing path 6. Thereby, the wind direction variable portions 113a and 113b are arranged along the front panel 3, and the aesthetic appearance of the indoor unit 1 is improved. At this time, since the high static pressure portion 90 is formed by being surrounded by the upper wall of the ventilation path 6 inclined upward and forward and the wind direction variable portions 113a and 113b, the vortex 25 developed in the high static pressure portion 90 increases. . For this reason, the blowing efficiency is slightly reduced as compared with the case of FIG. 19, but the increase in pressure loss can be suppressed as compared with the conventional case.

 [0169] Further, as shown in Fig. 21, the conditioned air may be sent out substantially directly downward from the outlet 5 with the ends of the wind direction variable portions 113b and 113c directed substantially downward. At this time, as shown in FIG. 22, if the wind direction variable portion 113a is arranged at an upper shielding position for shielding the outlet 5 along the front panel 3, the aesthetic appearance of the indoor unit 1 is improved.

 [0170] In the air conditioner having the above configuration, when the cooling operation is started, wind direction variable units 113a, 113b, and 113c are arranged as shown in FIG. That is, the wind direction variable portion 113a is disposed with the flat side facing forward and upward along the airflow flowing through the front guide portion 6a. The wind direction variable portion 113b is substantially parallel to the airflow flowing through the front guide portion 6a, is divided into two, and is arranged so as to project downward. As a result, it is arranged to be inverted by about 180 ° with respect to FIG. The wind direction variable section 113c is disposed below the cabinet 2 while also retracting the airflow force sent from the outlet 5.

 [0171] Then, the conditioned air is sent downward and forward as indicated by arrow A. As a result, the conditioned air is sent upward from the front downward blow during the heating operation, and the low-temperature conditioned air drops by its own weight.

 And is diffused indoors.

 [0172] If the wind direction variable section 113a is disposed on the flat side facing downward and rearward as shown in Fig. 17, airflow does not flow upward, and dew condensation occurs on the wind direction variable section 113a. For this reason, the wind direction variable unit 113a is disposed below the rotation shaft 113d by setting the plane side of the wind direction variable unit 113a to the upper surface. Accordingly, low-temperature conditioned air flows along both surfaces of the variable wind direction unit 113a, and the dew condensation of the variable wind direction unit 113a can be prevented.

[0173] If a certain time has elapsed since the start of the cooling operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Part 1 13a, 113b and 113c are arranged. In other words, the wind direction variable portion 113a is arranged such that the plane side faces rearward and upward along the airflow flowing through the front guide portion 6a. The wind direction variable portion 113b is arranged substantially parallel to the airflow flowing through the front guide portion 6a, and halves the airflow so as to project downward. The wind direction variable portion 113c is disposed below the cabinet 2 while also retracting the airflow force sent from the outlet 5.

 [0174] Thereby, the conditioned air is sent from the outlet 5 upward and forward as shown by the arrow E, for example, at a wind speed of about 5-6 mZ seconds. The conditioned air delivered into the room reaches the ceiling of the room R as shown in Fig. 25. Thereafter, the air is sucked into the suction port 4 from both sides of the indoor unit 1 by sequentially traveling from the ceiling surface S to the wall surface W2 facing the indoor unit 1, the floor surface F, and the wall surface W1 on the indoor unit 1 side from the ceiling surface S by the Coanda effect.

 [0175] Therefore, it is possible to prevent the user from being disturbed by the cold wind or the warm wind constantly, and to improve the comfort. Further, during cooling, health safety can be improved without locally lowering the user's body temperature. In addition, at this time, since the air flow greatly agitates the entire room R, the temperature distribution in the room R becomes uniform near the set temperature. In other words, except for a part above the living room R, the entire living area of the user substantially coincides with the set temperature, so that a comfortable space in which the temperature variation is small and the direct wind hardly hits the user can be obtained. In addition, since the variable wind direction unit 113c is stored below the cabinet 2, it is possible to prevent the dew on the variable wind direction unit 113c during cooling.

 Further, as shown in FIG. 26, when the direction of the wind direction variable portion 113a is horizontal, conditioned air can be sent out from the outlet 5 in the horizontal direction as shown by the arrow D. Note that by arranging the wind direction variable portion 113b so as to protrude downward at the time of forward forward blow shown in FIG. 23 described above, the wind can be smoothly blown at the time of forward forward blow (see FIG. 24) and at the time of horizontal blow (see FIG. 26). The variable direction unit 113b can be arranged.

 FIG. 27 shows a state when the operation of the air conditioner is stopped. When the operation of the air conditioner is stopped, the variable air direction unit 113c is arranged in the air flow path 6, and the air outlet 5 is shielded by the variable air direction units 113a and 113b. As a result, the interior of the indoor unit 1 cannot be visually recognized.

[0178] Further, the wind direction variable section 113a is arranged along the front panel 3, and the lower end of the wind direction variable section 113a is provided. By arranging the wind direction variable portion 113b so as to connect to the bottom of the cabinet 2, the aesthetic appearance of the indoor unit 1 can be improved. The positions of the vertical louver 12 and the wind direction variable units 113a, 113b, 113c can be changed by the user operating the remote controller.

According to the present embodiment, the wind direction variable portion 113b (first wind direction plate) is rotated clockwise in the drawing from the shielding position shown in FIG. 27 during the heating operation, and is arranged in the state shown in FIGS. 17 to 22. You. As a result, during the heating operation, the wind direction can be quickly changed in the lower front direction, the lower rear direction, and the lower direction. Also

 In the cooling operation, it is rotated counterclockwise in the drawing compared to the heating operation, and is arranged in the state shown in FIGS. 23, 24, and 26. As a result, during the cooling operation, the wind direction in the lower front, the horizontal direction, and the upper front can be quickly changed. Therefore, comfortable air conditioning can be quickly performed. During the dehumidifying operation, it is preferable to arrange the wind direction variable units 113a, 113b, 113c as in the cooling operation.

 [0180] Further, the wind direction variable portion 113a (second wind direction plate) rotates counterclockwise in the figure with respect to the upper shielding position shown in Fig. 27 and moves forward and downward (see Figs. 17, 18 and 23). The conditioned air can be easily sent out in the downward, rearward direction (see Fig. 19), right below (see Fig. 21), upward and forward (see Fig. 24), and horizontally (see Fig. 26). Further, by arranging the wind direction variable portion 113a at the upper shielding position, the conditioned air can be sent downward and rearward (see FIG. 20) and directly below (see FIG. 22) without deteriorating the appearance.

 [0181] <Fifth embodiment>

 Next, FIG. 28 is a side sectional view showing the indoor unit 1 of the air conditioner of the fifth embodiment. The same parts as those in the fourth embodiment shown in FIGS. 17 to 27 are denoted by the same reference numerals. In this embodiment, wind direction variable units 114a and 114b are provided in place of the wind direction variable units 113a, 113b and 113c of the fourth embodiment. Other parts are the same as in the fourth embodiment.

[0182] The wind direction variable sections 114a (second wind direction plate) and 114b (first wind direction plate) are arranged at the outlet 5, and both sides have a flat plate force. The rotation shafts 114c and 114d rotatably support the wind direction variable units 114a and 114b, and are rotated by a drive motor (not shown). Thus, the wind direction variable portions 114a and 114b change directions by driving the drive motor, and also have a wind direction plate force that varies the wind direction. The rotating shaft 114c is provided substantially at the center of the wind direction variable portion 114a, and the rotating shaft 114d Is provided at the end of the wind direction variable section 114b.

[0183] In the air conditioner having the above configuration, when the heating operation is started, the wind direction variable units 114a and 114b are arranged as shown in the figure. That is, the wind direction variable sections 114a and 114b are arranged along the airflow flowing through the front guide section 6a. At this time, the wind direction variable portion 114b is arranged such that the end on the rotation shaft 114d side is located rearward. Then, the conditioned air is sent downward and forward as indicated by arrow A. As a result, the indoor unit 1 is in a state of front lower blow-out in which conditioned air is sent forward and lower.

 [0184] If a certain time has elapsed since the start of the heating operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Parts 114a and 114b are arranged. That is, the wind direction variable section 114a is arranged so that one end thereof is close to the upper wall of the air flow path 6 and extends the upper wall downward by driving of the drive motor. The other end of the wind direction variable section 114a is disposed downward in the vicinity of the rotating shaft 114d. The wind direction variable portion 114b has a tip arranged rearward and downward.

 [0185] At this time, the counterclockwise rotation in the figure of the wind direction variable section 114a is regulated by a stopper (not shown) of the drive motor. Accordingly, a positioning means for positioning the wind direction variable portion 114a at a predetermined position is constituted by the stove, and the wind direction variable portion 114a is arranged at a position where a wall surface of the air flow path is formed by a difference in static pressure. This makes it possible to manage the arrangement of the wind direction variable section 114a and reliably form the wall surface of the air flow path. The wind direction variable section 114b is arranged at the position shown in the figure by controlling the rotation amount of the drive motor.

 [0186] Thus, the forward direction of the airflow flowing through the front guide portion 6a is closed by the wind direction variable portions 114a and 114b, and the high static pressure portion 90 in contact with the wind direction variable portions 114a and 114b is formed. The isobar 90a (see FIG. 3) of the high static pressure portion 90 is formed along the flow direction of the conditioned air facing the wind direction variable portions 114a and 114b as in the first to fourth embodiments. For this reason, the high static pressure part 90 becomes a hydrodynamic wall surface, and the conditioned air is smoothly changed in the sending direction and is sent out downward by 5 outlets.

 [0187] Further, the flow path is narrowed by the high static pressure portion 90, and the flow path is enlarged again on the downstream side.

Further, the wind direction variable portion 114b is disposed so as to intersect with a virtual surface 98 which extends the lower wall of the front guide portion 6a outward from the outlet 5 to the outside. Therefore, the same effects as in the first to fourth embodiments are obtained. be able to. Although the high static pressure portion 90 does not have a substantially bow shape as in the first to fourth embodiments, the blowing efficiency is slightly deteriorated, but the pressure loss can be reduced and the blowing efficiency can be improved as compared with the conventional case.

[0188] As shown in Fig. 30, arranging the wind direction variable section 114a along the front panel 3 improves the aesthetic appearance of the indoor unit 1. At this time, the rotation of the wind direction variable section 114a in the figure is restricted by a stopper (not shown) of the drive motor. Thus, a positioning means for positioning the wind direction variable portion 114a at a predetermined position by the stove is formed.

 [0189] Further, since the contact portion between the upper wall of the front guide portion 6a and the wind direction variable portion 114a is not formed by a smooth curved surface, a vortex 25 is generated in the high static pressure portion 90 and the first and second embodiments are different from the first and second embodiments. Also, the air blowing efficiency is slightly reduced. While increasing the pressure, it is possible to suppress an increase in pressure loss more than before, and to obtain a blowing efficiency substantially equal to that of the first and second embodiments.

 [0190] Further, as shown in FIG. 31, the conditioned air may be sent out almost directly downward with the air outlet 5 force with the tip of the wind direction variable section 114b directed substantially downward. At this time, as shown in FIG. 32, if the wind direction variable section 114a is arranged along the front panel 3, the aesthetic appearance of the indoor unit 1 is improved.

 [0191] Further, as shown in Fig. 33, the wind direction variable portion 114b may be disposed so that the axial end is forward, and the front blowing may be performed. By arranging the axial end of the wind direction variable portion 114b rearward at the time of downward front blowing in FIG. 28 described above, the rearward downward blowing (see FIG. 29 and FIG. 30) can be performed almost downward. This is more desirable because the wind direction variable section 114b can be moved smoothly when sending (see FIGS. 31 and 32).

 [0192] Further, when the cooling operation is started in the air conditioner having the above configuration, the wind direction variable units 114a and 114b are arranged as shown in FIG. That is, the wind direction variable portions 114a and 114b are arranged to be inclined downward and forward along the airflow flowing through the front guide portion 6a. At this time, the wind direction variable section 114a is arranged such that the front end thereof is located above the front end of the heating operation shown in FIGS. Thereby, dew condensation on the surface of the wind direction variable portion 114a due to the low-temperature conditioned air due to the passage of the airflow on both surfaces of the wind direction variable portion 114a can be prevented.

[0193] Further, the wind direction variable portion 114b is arranged such that the end on the rotation shaft 114d side is forward. Then, the conditioned air is sent downward and forward as indicated by arrow A. As a result, the indoor unit 1 is in a state of front downward blowing that sends conditioned air downward and forward. [0194] If a certain time has elapsed since the start of the cooling operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Parts 114a and 114b are arranged. That is, the wind direction variable portion 114a has a front end disposed above the rear end, and is substantially parallel to an upper wall of the blowing path 6 which is inclined upward near the outlet 5. The wind direction variable portion 114b is arranged such that the end on the shaft side is located below and forward of the end on the open side.

 As a result, the conditioned air is sent from the outlet 5 upward and forward as shown by the arrow E, for example, at a wind speed of about 5-6 mZ seconds. The conditioned air discharged into the room reaches the ceiling of the room R in the same manner as in FIG. 25 described above. Then, the wall W2 and the floor facing the indoor unit 1 from the ceiling surface S due to the Coanda effect

 The air is sucked into the suction port 4 from both sides of the indoor unit 1 sequentially along the surface F and the wall surface W1 on the indoor unit 1 side. Therefore, comfort and safety can be improved as in the fourth embodiment.

 Further, as shown in FIG. 36, when the direction of the wind direction variable portion 114a is horizontal, the conditioned air can be sent out from the outlet 5 in the horizontal direction as shown by the arrow D. By arranging the axial side of the wind direction variable portion 114b forward at the time of front downward blow shown in FIG. 34 described above, smoothness can be obtained during forward forward blow (see FIG. 35) and horizontal blow (see FIG. 36). The wind direction variable section 114b can be arranged.

 FIG. 37 shows a state when the operation of the air conditioner is stopped. When the operation of the air conditioner is stopped, the wind direction variable units 114a and 114b are arranged at the upper shielding position and the shielding position, respectively, and the outlet 5 is shielded. As a result, the interior of the indoor unit 1 cannot be visually recognized. In addition, by arranging the wind direction variable section 114a along the front panel 3 and arranging the wind direction variable section 114b so as to connect the lower end of the wind direction variable section 114a to the bottom of the cabinet 2, the aesthetic appearance of the indoor unit 1 can be improved. it can. Note that the position of the vertical louver 12 and the wind direction variable units 114a and 114b can be changed by the user's operation of the remote controller.

[0198] According to the present embodiment, the wind direction variable portion 114b (first wind direction plate) is rotated clockwise in the drawing from the shielding position shown in Fig. 37 during the heating operation, and is arranged in the state shown in Figs. 28 to 32. You. As a result, during the heating operation, the wind direction can be quickly changed in the lower front direction, the lower rear direction, and the lower direction. In addition, during the cooling operation, the air conditioner rotates counterclockwise in the drawing compared to the heating operation, and is arranged in the state shown in FIGS. 34, 35, and 36. As a result, during cooling operation, The wind direction of the upper front can be quickly changed. Therefore, comfortable air conditioning can be quickly performed. During the dehumidifying operation, it is preferable to arrange the wind direction variable units 114a and 114b as in the cooling operation.

 [0199] Further, the wind direction variable portion 114a (the second wind direction plate) rotates counterclockwise in the figure with respect to the upper shielding position shown in Fig. 37, and moves downward and forward (see Figs. 28, 33, and 34). The conditioned air can be easily sent out in the rear, lower direction (see Fig. 29), right below (see Fig. 31), upper front (see Fig. 35), and horizontal direction (see Fig. 36). Furthermore, the conditioned air portion 114a is disposed at the upper shielding position, so that the conditioned air can be sent downward (see FIG. 30) and directly below (see FIG. 32) without deteriorating the appearance.

 [0200] <Sixth embodiment>

 Next, FIG. 38 is a side sectional view showing the indoor unit 1 of the air conditioner of the sixth embodiment. The same parts as those in the fifth embodiment shown in FIGS. 28 to 37 described above are denoted by the same reference numerals. In the present embodiment, wind direction variable sections 115a and 115b are provided instead of the wind direction variable sections 114a and 114b of the fifth embodiment. Other parts are the same as in the fifth embodiment.

 [0201] The wind direction variable sections 115a (second wind direction plate) and 115b (first wind direction plate) are arranged at the outlet 5, and both sides have a flat plate force. The rotating shafts 115c and 115d rotatably support the wind direction variable units 115a and 115b, and are rotated by a drive motor (not shown). Thus, the wind direction variable units 115a and 115b change the direction by driving the drive motor to generate a wind direction plate force. The rotating shaft 115c is provided substantially at the center of the wind direction variable portion 115a, and the rotating shaft 115d is provided at a position substantially apart from the wind direction variable portion 115b substantially at the center of the wind direction variable portion 115b.

 [0202] In the air conditioner having the above configuration, when the heating operation is started, the wind direction variable units 115a and 115b are arranged as shown in the figure. That is, the wind direction variable sections 115a and 115b are arranged along the airflow flowing through the front guide section 6a. At this time, the rotation axis 115d of the wind direction variable section 115b is disposed above the wind direction variable section 115b. Then, the conditioned air is sent forward and downward as shown by arrow A. As a result, the indoor unit 1 is in a state of front downward blowing that sends conditioned air downward and forward.

[0203] Further, as shown in Fig. 39, the rotation axis 115d of the wind direction variable section 115b is connected to the wind direction variable section 115b. It may be arranged downward and blow forward downward. When the rotating shaft 115d is arranged above the wind direction variable portion 115b as shown in FIG. 38, the conditioned air can reach far away. Therefore, it is suitable when the living room is relatively large.

 [0204] Further, as shown in Fig. 39, when the rotating shaft 115d is arranged below the wind direction variable portion 115b, the space near the heating is closer than when the rotating shaft 115d is arranged above the wind direction variable portion 115b. In this way, fine airflow control can be performed. Therefore, it is suitable when the living room is relatively small. Therefore, it is possible to make a timely selection based on the size of the living room.

 [0205] When a certain time has elapsed since the start of the heating operation, or when the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Parts 115a and 115b are arranged. That is, the wind direction variable portion 115a is arranged so that one end thereof contacts the upper wall of the air blowing path 6 and extends the upper wall of the front guide portion 6a by driving of the drive motor. One end of the wind direction variable section 115b is close to the wind direction variable section 115a, and the other end is disposed substantially downward. Note that the gap between the wind direction variable portions 115a and 115b is extremely small, and the amount of conditioned air leaking through this gap force is extremely small.

 [0206] At this time, the wind direction variable section 115a is positioned in contact with the upper wall of the air blowing path 6. Therefore, positioning means for positioning the wind direction variable portion 115a at a predetermined position is constituted by the upper wall of the air flow path 6, and the wind direction variable portion 115a is arranged at a position where the wall surface of the air flow path is formed by the difference in static pressure. Thereby, the arrangement of the wind direction variable portion 115a can be managed, and the wall surface of the air flow path can be reliably formed. The wind direction variable section 115b is arranged at the position shown in the figure by controlling the rotation amount of the drive motor.

 [0207] Thus, the forward direction of the airflow flowing through the front guide portion 6a is closed by the wind direction variable portions 115a and 115b, and the high static pressure portion 90 in contact with the wind direction variable portions 115a and 115b is formed. The isobar 90a (see FIG. 3) of the high static pressure section 90 is formed along the flow direction of the conditioned air facing the wind direction variable sections 115a and 115b as in the first to fifth embodiments. For this reason, the high static pressure portion 90 becomes a hydrodynamic wall surface, and the conditioned air is smoothly changed in the sending direction and sent out from the outlet 5 rearward and downward.

 [0208] Further, the flow path is narrowed by the high static pressure part 90, and the flow path is enlarged again on the downstream side.

Further, the variable wind direction portion 115b is a virtual extension of the lower wall of the front guide portion 6a extending outward from the outlet 5. It is arranged to intersect face 98. Therefore, the same effects as in the first to fifth embodiments can be obtained. Although the high static pressure portion 90 does not have a substantially bow shape as in the first to fourth embodiments, the blowing efficiency is slightly deteriorated, but the pressure loss can be reduced and the blowing efficiency can be improved as compared with the conventional case.

[0209] Further, since the rotation axis 115d is not provided at the end but is provided substantially at the center and is separated by a predetermined amount, the wind direction variable section 115b can be rotated with a smaller torque as compared with the fifth embodiment. it can. Therefore, it is possible to reduce the power consumption of the driving motor and reduce the cost by reducing the specification of the driving motor output.

 Note that, as shown in FIG. 41, the conditioned air may be sent from the air outlet 5 almost directly downward as shown by the arrow B, with the tip of the wind direction variable portion 115b slightly forward just below. By arranging the rotating shaft 115d of the wind direction variable portion 115b downward at the time of forward downward blowing in FIG. 39 described above, when the air is blown rearward downward (see FIG. 40) or almost directly downward (see FIG. 41). Wind

 The variable direction unit 115b can be moved smoothly.

 [0211] When the cooling operation is started in the air conditioner having the above configuration, the wind direction variable units 115a and 115b are arranged as shown in Fig. 38 described above. At this time, the variable wind direction unit 115a is set so that the outer end is slightly higher than during heating. Thereby, the conditioned air can be circulated on both sides of the variable wind direction unit 115a, and the dew of the variable wind direction unit 115a can be prevented. Then, the conditioned air is sent forward and downward as indicated by arrow A. As a result, the indoor unit 1 is in a state of front downward blowing that sends conditioned air downward forward.

 [0212] If a certain period of time has elapsed since the start of the cooling operation, or if the difference between the temperature of the air taken in from the suction port 4 and the set temperature is smaller than a predetermined temperature, the wind direction is changed as shown in FIG. Parts 115a and 115b are arranged. That is, the wind direction variable portion 115a has a front end disposed above the rear end, and is substantially parallel to the upper wall of the air passage 6 inclined upward near the outlet 5. The wind direction variable portion 115b is arranged such that the outer end is located forward and lower than the inner end.

[0213] Thereby, the conditioned air is sent upward from the outlet 5 as shown by the arrow E, for example, at a wind speed of about 5-6 mZ seconds. The conditioned air discharged into the room reaches the ceiling of the room R in the same manner as in FIG. 25 described above. After that, it faces indoor unit 1 from ceiling surface S due to the Coanda effect The air is sucked into the inlet 4 from both sides of the indoor unit 1 by sequentially traveling along the wall surface W2, the floor surface F, and the wall surface Wl on the indoor unit 1 side. Therefore, similarly to the fourth and fifth embodiments, comfort and safety can be improved.

 Further, as shown in FIG. 43, when the direction of the wind direction variable section 115a is horizontal, conditioned air can be sent out from the outlet 5 in the horizontal direction as shown by the arrow D. By arranging the rotating shaft 115d of the wind direction variable portion 115b above the wind direction variable portion 115b at the time of front downward blowing shown in FIG. 38 described above, it is possible to perform forward front blowing (see FIG. 42) and horizontal blowing (see FIG. 42). (See Fig. 43.) The wind direction variable section 115b can be arranged smoothly.

 [0215] Fig. 44 shows a state when the operation of the air conditioner is stopped. When the operation of the air conditioner is stopped, the air outlet is closed by the wind direction variable units 115a and 115b. As a result, the inside of the indoor unit 1 cannot be visually recognized. In addition, by arranging the wind direction variable section 115a along the front panel 3 and arranging the wind direction variable section 115b so as to connect the lower end of the wind direction variable section 115a to the bottom of the cabinet 2, the aesthetic appearance of the indoor unit 1 can be improved. it can. The positions of the vertical louver 12 and the wind direction variable units 115a and 115b can be changed by the user operating the remote controller.

 According to the present embodiment, the wind direction variable portion 115b (first wind direction plate) is rotated clockwise in the drawing from the shielding position shown in FIG. 44 during the heating operation, and is arranged in the state shown in FIGS. 39 to 41. You. As a result, during the heating operation, the wind direction can be quickly changed in the lower front direction, the lower rear direction, and the lower direction. Also, during the cooling operation, it is rotated counterclockwise in the figure as compared to the heating operation, and is arranged in the state shown in FIGS. 38, 42, and 43. Thus, during the cooling operation, the wind direction in the lower front, the horizontal direction, and the upper front can be quickly changed. Therefore, comfortable air conditioning can be quickly performed. During the dehumidifying operation, it is preferable to arrange the wind direction variable units 115a and 115b as in the cooling operation.

 [0217] Further, the wind direction variable portion 115a (second wind direction plate) rotates counterclockwise in the figure with respect to the upper shielding position shown in Fig. 44, and moves downward and forward (see Figs. 38 and 39) and downward and backward. (See Fig. 40), conditioned air can be easily delivered in the direction directly below (see Fig. 41), the upper front (see Fig. 42), and the horizontal direction (see Fig. 43).

[0218] The air conditioner according to the present invention has been described above, but the present invention is not limited to the above embodiments. Therefore, the present invention can be implemented with appropriate changes without departing from the spirit of the present invention.

 ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the air conditioner which harmonizes the air taken in the housing | casing and sends it out indoors.

Claims

The scope of the claims  [1] A suction port for taking in indoor air, an air outlet for introducing the conditioned air taken in from the air inlet to the room, a blowing path for guiding the conditioned air to the air outlet, and the blower outlet. An air conditioner mounted on the indoor wall surface, wherein the air outlet device sends the conditioned air directly downward or rearward downward. The air conditioner is characterized in that the variable air direction unit is arranged so that, when performing the operation, the constant pressure line of the static pressure distribution near the variable air direction unit is formed along the flow direction of the conditioned air facing the variable air direction unit. Machine.  [2] The blowing path has a front guide section for guiding conditioned air downward and forward, and the variable air direction section circulates through the front guide section when sending conditioned air downward and forward from the outlet. A flow path along the airflow is formed, and the airflow flowing through the front guide portion is curved when the conditioned air is sent directly downward or rearward downward from the outlet. The air conditioner as described.  3. The air outlet force, wherein when the conditioned air is sent directly downward or rearward downward, the forward direction of the airflow flowing through the front guide section is blocked by the wind direction variable section. An air conditioner according to item 1.  [4] When the conditioned air is sent straight downward or rearward downward, the outlet force is in contact with the wind direction variable portion forward in the traveling direction of the airflow flowing through the front guide portion and is lower than the static pressure of the front guide portion. 3. The air conditioner according to claim 2, wherein a high-pressure high static pressure portion is formed.  [5] The cross-sectional shape of the high static pressure portion is a substantially arcuate bicuspid curve. 4. The air conditioner according to 4. 6. The air conditioner according to claim 5, wherein the high static pressure portion has a maximum static pressure at a central portion of an arc forming a substantially arc shape. [7] The blow-out force When the conditioned air is sent directly downward or rearward downward, the flow path of the conditioned air is narrowed by the high static pressure portion to make the flow passage area smaller than that of the front guide portion. The air conditioner according to claim 4, wherein [8] The flow path narrowed by the high static pressure portion is expanded downstream. The air conditioner as described.  9. The air conditioner according to claim 2, wherein the wind direction variable section is disposed so as to intersect on an extension of a lower inner wall of the front guide section. 10. The air conditioner according to claim 1, wherein the variable air direction portion comprises a movable inner wall of the air flow path. 11. The air conditioner according to claim 10, wherein, when the conditioned air is sent directly downward or rearward downward, the airflow path is extended by the airflow direction variable section.  12. The air conditioner according to claim 11, wherein the variable air direction portion comprises a plurality of air direction plates arranged at the air outlet and changing directions by rotation. 13. The air pressure control device according to claim 11, further comprising: a static pressure detecting unit configured to detect a static pressure distribution in the air flow path, wherein the wind direction variable unit is changed based on a detection result of the static pressure detecting unit. 9. The air conditioner according to any one of the above. 14. The air conditioner according to claim 1, wherein an indoor heating operation is performed by sending out conditioned air.  [15] A suction port for taking in indoor air, an air outlet for introducing conditioned air taken in from the air inlet to the room, a blowing path for guiding conditioned air to the air outlet, and An air conditioner provided with a wind direction variable section that varies a wind direction of conditioned air, characterized in that a wall of an air flow path curved by the wind direction variable section is formed by a difference in static pressure in the blowing path. And air conditioner.  [16] The blowing path has a front guide portion for guiding the conditioned air downward and forward, and sends out the conditioned air flowing through the front guide portion downward and forward from the air outlet. 16. The air conditioner according to claim 15, wherein the airflow flowing through the front guide section is curved to discharge conditioned air from the outlet directly downward or rearward.  17. The air conditioner according to claim 16, wherein the air conditioning device performs the heating operation by sending the conditioned air directly downward or rearward downward. [18] The forward direction of the airflow flowing through the front guide section is blocked by the variable wind direction section. 17. The air conditioner according to claim 16, wherein the wall surface is formed by doing so. [19] The air conditioner is characterized in that the wall surface is in contact with the wind direction variable portion in the forward direction of the airflow flowing through the front guide portion, and generates a high static pressure portion force higher than the static pressure of the front guide portion. The air conditioner according to claim 16. 20. The air conditioner according to claim 19, wherein the flow path of the conditioned air is narrowed by the high static pressure portion to have a flow passage area smaller than that of the front guide portion. 21. The air conditioner according to claim 19, wherein the wind direction variable section is disposed so as to intersect with an extension of a lower inner wall of the front guide section. [22] The air flow direction variable portion comprises a movable inner wall of the air flow path. 5—The air conditioner according to claim 21. 23. The air conditioner according to claim 22, wherein the blowout path is extended by the wind direction variable section when the conditioned air is sent directly downward or rearward downward.  The air conditioner according to any one of claims 15 to 21, wherein the wind direction variable portion is composed of a plurality of wind direction plates arranged at the air outlet and changing the direction by rotation.  [25] The air conditioner according to any one of claims 15 to 21, wherein a positioning means for positioning the wind direction variable portion at a position where the wall surface is formed is provided.  [26] A suction port for taking in room air, an outlet for delivering conditioned air conditioned by being taken in from the suction port to the room, a blowing path for guiding conditioned air to the outlet, and a circulation path for the outlet. An air conditioner having a first wind direction plate movably arranged and a wind direction variable section for varying a wind direction of the conditioned air to be sent out at the outlet port force, wherein the air conditioner is mounted on an indoor wall surface. The first wind direction plate is provided with a shielding position for shielding at least a part of the outlet, and the shielding position is rotated in one direction, and the air flow is adjusted so that the outlet air conditioned air is sent directly downward or rearward downward. A guiding position, a position rotating in one direction from the shielding position to guide airflow such that conditioned air is sent forward and downward from the outlet, and a position rotating in the other direction from the shielding position. Force A position for guiding the airflow so that the conditioned air is sent forward and downward, and a position where the conditioned air is rotated in the other direction from the shielding position and the conditioned air is directed forward and upward from the outlet. An air conditioner characterized by being able to take a position to guide an air flow so as to be sent out. [27] A suction port for taking in room air, an outlet for delivering conditioned air conditioned by being taken in from the suction port into the room, a blowing path for guiding conditioned air to the outlet, and a circulation path for the outlet. An air conditioner having a first wind direction plate movably arranged and a wind direction variable section for varying a wind direction of the conditioned air to be sent out at the outlet port force, wherein the air conditioner is mounted on an indoor wall surface.  A first wind direction plate that shields at least a part of the air outlet, and a position that guides an air flow such that the air outlet force conditioned air is rotated downward in one direction from the shield position and is sent downward and rearward. A position in which the air flow is guided in such a way that the conditioned air is sent forward and downward from the outlet by turning in one direction from the shielding position; A position to guide the air flow so that the air is sent forward and downward, and a position to guide the air flow so that the shielding position force rotates in the other direction and the outlet force is sent in the horizontal direction. An air conditioner characterized by being able to do. [28] The blowing path has a front guide portion for guiding the conditioned air downward and forward, and the first wind direction plate flows through the front guide portion when the conditioned air is sent forward and downward from the outlet. In addition to forming a flow path along the airflow, when the conditioned air is sent directly downward or rearward downward from the outlet, the airflow is curved by closing the front in the traveling direction of the airflow flowing through the front guide portion. The air conditioner according to claim 26 or claim 27, wherein:  [29] The first wind direction plate is turned upward in the one direction from the shielding position and guides the airflow forward and downward, and is arranged convexly upward, and is turned in the other direction from the shield position and directed forward and downward. 28. The air conditioner according to claim 26 or 27, wherein the air conditioner is disposed so as to protrude downward. [30] The heating operation is performed at a position where the first wind direction plate is rotated in one direction from the shielding position, and a cooling operation or a dehumidification operation is performed at a position where the first wind direction plate is rotated in the other direction. Item 30. The air conditioner according to Item 27. 31. The air conditioner according to claim 26, wherein a first wind direction plate is arranged below the outlet, and the wind direction variable portion has a second wind direction plate rotatably arranged above the outlet. The air conditioner according to claim 27. [32] The second wind direction plate has an upper shielding position that shields the upper part of the outlet, a position that is inclined with respect to the upper shielding position and guides airflow forward and downward, and is inclined with respect to the upper shielding position. 32. The air conditioner according to claim 31, wherein the air conditioner can be set to a position where the airflow is guided in a horizontal direction or an upper front direction. 33. The air conditioner according to claim 32, wherein a second wind direction plate is arranged at the upper shielding position when the conditioned air is sent directly downward or rearward downward. [34] When the conditioned air is sent directly downward or rearward downward, the second wind direction plate is disposed at a position that is substantially inverted and inclined with respect to the upper shielding position, and extends the upper wall of the blowing path. 33. The air conditioner according to claim 32, wherein: 35. The air conditioner according to claim 34, wherein the second wind direction plate is positioned in contact with the first wind direction plate when the conditioned air is sent directly downward or rearward downward. 36. The air conditioner according to claim 34, wherein the second airflow direction plate is positioned in contact with the upper wall of the ventilation path when the conditioned air is sent directly downward or rearward downward. .