WO2004029519A1

WO2004029519A1 - Air conditioner

Info

Publication number: WO2004029519A1
Application number: PCT/JP2003/012109
Authority: WO
Inventors: Masaki Ohtsuka; Yukishige Shiraichi
Original assignee: Sharp Kabushiki Kaisha
Priority date: 2002-09-25
Filing date: 2003-09-22
Publication date: 2004-04-08
Also published as: HK1084438A1; JP4017483B2; EP1553361A4; JP2004116859A; CN1303375C; CN1685179A; EP1553361A1; AU2003299108A1

Abstract

Three transverse louvers (11a, 11b, 11c) are arranged side by side in a spout port (5). When conditioned air is delivered upward, the central and lower transverse louvers (11c, 11b) are disposed in a standard position substantially parallel with the air flowing through the central and lower regions of an air feed path (6) so as to deliver the main stream downward as indicated by (A1). The upper transverse louver (11a) is disposed upwardly inclined with respect to the air flow passing through the upper region of the air feed path (6), so that the air passing through the upper region of the air feed path (6) is led by the transverse louver (11a) to be delivered along the upper wall (6a) of the air feed path (6). The air delivered upward is drawn to the main stream (A1) by the Coanda effect and led in the direction of the main stream, as indicated by arrow (A4).

Description

Description Air Conditioner Technical Field

TECHNICAL FIELD The present invention relates to an air conditioner for conditioning air taken in and sending the air indoors. In particular, the present invention relates to an air conditioner capable of sending air upward. Old technology

A conventional air conditioner sends out air substantially horizontally or downward. For this reason, if ventilation is continued with the room temperature near the set temperature, the user will always be hit by cold or warm air. Therefore, there was a problem of giving the user discomfort. Furthermore, during dehumidifying operation or cooling operation, there was a problem that the user's body temperature was locally lowered and health was harmed.Therefore, conditioned air was sent out horizontally or downward, and the indoor temperature was set near the set temperature. An air conditioner that can send air upward when it arrives is disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-230325. FIG. 9 is a cross-sectional side view showing an example of an indoor unit of an air conditioner that sends air upward.

The main unit of the indoor unit 1 disposed near the ceiling R in the room is held by a cabinet 2 mounted on a wall surface. A front panel 3 is detachably attached to cabinet 2. The front panel 3 is provided with suction ports 4a and 4c on the upper surface side and the front side.

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. Inside the indoor unit 1, a ventilation path 6 communicating from the intake ports 4 a and 4 c to the air outlet 5 is formed. A blowing fan 7 is arranged in the blowing path 6. The air flowing through the blowing path 6 is sent from the outlet 5 by driving the blowing fan 7.

The blowing path 6 has an upper wall 6a which is inclined upward as it goes forward near the outlet 5, and a lower wall 6b which is inclined downward as it goes forward. Therefore, the downstream outlet 5 Is formed so as to gradually expand as it approaches. As a result, the kinetic energy of the air flowing through the blowing path 6 is converted into static pressure. Therefore, the load on the blower fan 7 can be reduced and the air volume can be increased.

An air filter 8 is provided at a position facing the front panel 3. The air filter 8 collects and removes dust contained in the air sucked from the suction ports 4a and 4c. An indoor heat exchanger 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 outdoors. 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. Drain pans 10 that collect dew condensation that has fallen from the indoor heat exchanger 9 during cooling or dehumidification are provided below the front and rear of the indoor heat exchanger 9.

The outlet 5 is provided with a horizontal louver 11a1b that can change the vertical blowout angle facing the outside. The horizontal louver 1 1a opens and closes the upper part of the outlet 5. The horizontal louver 1 1b opens and closes the lower part of the outlet 5. The horizontal louvers 1 1a 1 1b make it possible to change the air sending direction from downward to upward. Further, a vertical louver 12 capable of changing the blowing angle in the left-right direction is provided behind the horizontal louver 11a11b.

In the air conditioner having the above configuration, when the operation of the air conditioner is started, the blower fan 7 is driven to rotate. Refrigerant from an outdoor unit (not shown) flows through the indoor heat exchanger 9 to operate the refrigeration cycle. Air is sucked into the indoor unit 1 from the suction ports 4a and 4c by driving the blower fan 7. Dust contained in the air is removed by the air filter 8.

The air taken into the indoor unit 1 exchanges heat with the indoor heat exchanger 9 and is cooled or heated. Then, the conditioned air passes through the air flow path 6 and is restricted in the left-right direction by the vertical louvers 12. Sent out. As a result, indoor air conditioning is achieved. In a stable state where the temperature in the room is stable, as shown in FIG. 10, the horizontal panels 11a and 11b are arranged upward. As a result, conditioned air is sent upward as indicated by arrow A2. Therefore, the user is not always hit by cold or warm wind, and discomfort is reduced. In addition, local decrease in body temperature can be prevented. On the other hand, an air conditioner equipped with an ion generator that generates ions in the indoor unit 1 is also known, as disclosed in Japanese Patent Application Laid-Open No. 2002-88968. This air conditioner sends out ions from the outlet 5 together with the conditioned air. Thereby, it is possible to obtain an air cleaning effect and a relaxation effect by sterilization and the like.

According to the conventional air conditioner shown in FIGS. 9 and 10 described above, the air delivered from the outlet 5 is guided downward or upward along the horizontal louvers 11a and 11b. When the air is sent downward, the conditioned air does not flow along the upper wall 6a of the ventilation path 6, as shown in FIG. For this reason, the room temperature air is sucked into the air sent in the direction of arrow A1 and flows into the air blowing path 6 as shown by arrow B2.

At this time, the inflowing air stays in contact with the upper wall 6a of the ventilation path 6, and is cooled to the dew point by the conditioned air during the cooling operation or the dehumidifying operation. Therefore, there was a problem that dew condensation 99 was formed on the upper wall 6 a of the ventilation path 6.

Similarly, when air is delivered upward, the conditioned air is delivered in the direction of arrow A2 as shown in FIG. The air at room temperature is sucked by the air and flows into the air blowing path 6 from below as shown by the arrow B1. For this reason, there was a problem that the inflowing air stayed in contact with the lower wall 6 b of the air flow path 6, and condensation 99 was generated on the lower wall 6 b of the air flow path 6. Since air with different temperatures comes into contact with both sides of the horizontal louver 11b, there is a problem that dew condensation 99 occurs on the surface of the horizontal louver 11b.

In addition, since the ventilation path 6 extends toward the outlet 5, the conditioned air spreads radially to the outlet 5 and circulates. Therefore, when air is sent downward as shown in FIG. 9, the air above the outlet 5 collides with the upper horizontal chamber 11a and the pressure loss increases.

Similarly, when air is sent upward as shown in FIG. 10, the air below the outlet 5 collides with the lower horizontal chamber 1.1.b, and the pressure loss increases. In addition, the air flowing through the ventilation path 6 is separated from the upper wall 6a or the lower wall 6b by the collision. For this reason, The flow area decreases, and the conversion efficiency for converting kinetic energy to static pressure decreases. Therefore, there is also a problem that the air volume sent out by the fan 7 is reduced.

Further, in an air conditioner that sends out ions together with the conditioned air, the ions collide with the lateral louver 11a or the horizontal louver 11b to take charge. As a result, there was a problem that the amount of ions released into the room was reduced due to the disappearance or inactivation of the ions. Disclosure of the invention

An object of the present invention is to provide an air conditioner capable of preventing dew condensation and preventing a decrease in air volume. Another object of the present invention is to provide an air conditioner capable of preventing a decrease in the amount of released ions.

[Means for Solving the Problems]

In order to achieve the above object, the present invention relates to an air conditioner for conditioning air taken in from an intake port, and changing the direction of air flowing through an air circulation path downward or upward by a wind direction changing means and sending the air from an outlet. The wind direction changing means changes the wind direction of the air sent from the outlet by the Coanda effect. According to this configuration, the air taken in from the suction port is conditioned. This air is discharged from the outlet through the air flow path, for example, downward. Some air is blown upward by the wind direction changing means. The direction of the air sent upward is changed by the Coanda effect in the direction of the mainstream air. The air flow path is inclined, for example, so that the upper wall goes upward as it goes forward. Therefore, the air circulation path is formed to expand toward the downstream.

When the conditioned air is sent upward by the wind direction changing means, a part of the air is sent from the lower part of the outlet along the lower wall of the air flow path. This air is sucked into the mainstream air sent upward by the Coanda effect and is guided upward. When the conditioned air is sent downward by the wind direction changing means, a part of the air is sent from the upper part of the air outlet along the upper wall of the air flow path. This air is sucked into the mainstream air sent downward by the Coanda effect and is guided downward. The wind direction changing means can be easily realized by a plurality of wind direction plates attached to the air outlet and changing the direction. When sending air upward from the outlet, the uppermost wind direction plate is arranged at a standard position along the air flowing above the air flow path. As a result, the air flowing in the upper part of the air flow path is guided in the extending direction of the wind direction plate. When sending air downward from the outlet, the uppermost wind direction plate is located closer to the upper wall of the air flow path as it goes downstream from the standard position. As a result, some air flows along the upper wall of the air flow path. Thereafter, the air is guided into the room along the mainstream air sent downward.

When air is sent downward from the outlet, the lowest wind direction plate is located at a standard position along the air flowing below the air flow path. Thus, the air flowing through the lower part of the air flow path is guided in the direction in which the wind direction plate extends. When sending air upward from the outlet, the lowermost wind direction plate is located closer to the lower wall of the air flow path as it goes downstream from the standard position. As a result, some air flows along the lower wall of the air flow path. Thereafter, the air is guided into the room along with the mainstream air sent upward.

If three or more wind panels are provided, it is desirable because the direction of the mainstream blowout can be easily controlled by the wind panel except the top or bottom wind panel.If three wind panels are used, the direction of each wind panel can be easily controlled. More desirable. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side cross-sectional view showing a room air conditioner of an air conditioner according to a first embodiment of the present invention; FIG. 2 is a side cross sectional view showing a state of downward blowing of an indoor unit of an air conditioner according to a first embodiment of the present invention; Figure

FIG. 3 is a side cross-sectional view showing a state of upward blowing of the indoor unit of the air conditioner according to the first embodiment of the present invention.

FIG. 4 is a circuit diagram showing a refrigeration cycle of the air conditioner according to the first embodiment of the present invention. FIG. 5 is a plan view showing a remote controller of the air conditioner according to the first embodiment of the present invention.

FIG. 6 shows a remote controller of the air conditioner according to the first embodiment of the present invention. Front view

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

FIG. 8 is a side cross-sectional view showing a state of upward blowing of the indoor unit of the air conditioner according to the second embodiment of the present invention.

FIG. 9 is a side cross-sectional view showing a state of downward blowing of an indoor unit of a conventional air conditioner. FIG. 10 is a side cross-sectional view showing a state of upward blowing of an indoor unit of a conventional air conditioner. The best form of bear

Hereinafter, embodiments of the present invention will be described with reference to the drawings. For convenience of explanation, the same parts as those in FIGS. 9 and 10 of the conventional example are denoted by the same reference numerals. FIG. 1 is a schematic perspective view showing the air conditioner of the first embodiment.

The main unit of the indoor unit 1 of the air conditioner arranged near the ceiling R in the room is held by a cabinet 2 attached to a wall surface in the room. The cabinet 2 has a front panel 3 detachably attached thereto. The front panel 3 is provided with suction ports 4a and 4c on the upper side and the front side.

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. Inside the indoor unit 1, a ventilation path 6 communicating from the intake ports 4 a and 4 c to the outlet 5 is formed. A blowing fan Ί is arranged in the blowing path 6. The air flowing through the air flow path 6 is sent from the air outlet 5 by the driving of the air blow fan 7.

The blowing path 6 has an upper wall 6a which is inclined upward as it goes forward near the outlet 5, and a lower wall 6b which is inclined downward as it goes forward. Therefore, it is formed so as to gradually expand as it approaches the downstream outlet 5. As a result, the kinetic energy of the air flowing through the blowing path 6 is converted into static pressure. Therefore, the load on the blower fan 7 can be reduced and the air volume can be increased.

An air filter 8 is provided at a position facing the front panel 3. The air filter 8 collects and removes dust contained in the air sucked from the suction ports 4a and 4c. Between the blower fan 7 and the air filter 8 in the Exchanger 9 is arranged.

Drain pans 10 are provided below the indoor heat exchanger 9 before and after. The drain pan 10 collects the condensation that has dropped from the indoor heat exchanger 9 during cooling or dehumidification. Further, an ion generator 30 that generates ions is provided adjacent to the front drain pan 10. The ion generator 30 is arranged so that the discharge surface 30a faces the blowing path 6.

The outlet 5 is provided with horizontal louvers 11 a and 11 b that can change the vertical blowing angle facing the outside. The horizontal louver 1 1a opens and closes the upper part of the outlet 5. The horizontal louver 1 1b opens and closes the lower part of the outlet 5. The horizontal chambers 11a and 11b allow the air sending direction to be changed from downward to upward. Further, a vertical louver 12 capable of changing the blowing angle in the left-right direction is provided on the back side of the horizontal levers 11a and 11b.

FIG. 4 is a circuit diagram showing a refrigeration cycle of the air conditioner. The outdoor unit (not shown) connected to the indoor unit 1 of the air conditioner includes a compressor 62, a four-way switching valve 63, an outdoor heat exchanger 64, a blower fan 65, and a throttle mechanism 66. Can be One end of the compressor 62 is connected to an outdoor heat exchanger 64 via a refrigerant pipe 67 via a four-way switching valve 63. The other end of the compressor 62 is connected to the indoor heat exchanger 9 via a four-way switching valve 63 by a refrigerant pipe 67. The outdoor heat exchanger 64 and the indoor heat exchanger 9 are connected by a refrigerant pipe 67 through a throttle mechanism 66.

When the cooling operation is started, the compressor 62 is driven and the blower fan 7 rotates. This allows the refrigerant to return to the compressor 62 via the compressor 62, the four-way switching valve 63, the outdoor heat exchanger 64, the throttling mechanism 66, the indoor heat exchanger 9, and the four-way switching valve 63. 6 8 are formed.

The operation of the refrigeration cycle 68 cools the indoor heat exchanger 9 to a temperature lower than the ambient temperature during cooling. Also, during the heating operation, the four-way switching valve 63 is switched, the blower fan 65 rotates, and the refrigerant flows in the opposite direction to the above. Thereby, the indoor heat exchanger 9 is heated to a temperature higher than the ambient temperature.

Figure 5 shows a remote controller 1 31 that can communicate with the indoor unit 1. The remote controller 31 has a display 35 that displays the room temperature and operating status, and various operations. An operation unit 36 having operation buttons is provided. The air conditioner is turned on / off by the operation stop button 37 of the operation unit 36. The operation unit 36 is provided with a switching button 38 and a vertical wind direction button 32. Switch button 38 switches between cooling operation, heating operation and dehumidification operation.

The up / down wind direction buttons 32 allow the user to set the desired wind direction by changing the direction of the horizontal louvers 11a and 11b. In this case, it is preferable that the front lower blow and the front upper blow can be alternately selected each time the up / down wind direction button 32 is pressed, because the operation of the remote controller 131 can be easily understood.

The up / down wind direction buttons 32 may have other names. If a word that accurately expresses the effect is written on the button or in the vicinity of the button, the function becomes obvious at a glance, and convenience is improved. As shown in FIG. 6, when the lower cover 31a is slid, the operation section 36a is exposed so that detailed setting of the manual operation can be performed. FIG. 2 shows the operation of the air conditioner having the above configuration at the time of downward blowing. When the operation of the air conditioner is started, the blower fan 7 is driven to rotate. The refrigerant from the outdoor unit (not shown) flows to the indoor heat exchanger 9 to operate the refrigeration cycle. By driving the blower fan 7, air is sucked into the indoor unit 1 from the suction ports 4a and 4c. Dust contained in the air is removed by the air filter 8. In addition, the ion generator 30 is driven, and ions are emitted from the discharge surface 30a into the blowing path 6.

The air taken into the indoor unit 1 exchanges heat with the indoor heat exchanger 9 and is cooled or heated. Then, the conditioned air passes through the ventilation path 6 and is regulated in the left-right direction by the vertical louvers 12. The lower horizontal louver 11b is arranged at a standard position substantially parallel to the air flowing through the lower part of the air flow path 6. As a result, the air flowing through the lower part of the air passage 6 is guided in the extending direction of the horizontal louver 11b.

The upper horizontal bar 11a is arranged to be inclined in a direction approaching the upper wall 6a of the air flow path 6 toward the downstream, with respect to the airflow of the air flowing through the upper part of the air flow path 6. You. The air passing through the substantially central portion of the ventilation path 6 has a large amount of air and a large angle between the air flow and the lateral louver 11a. For this reason, the air is sent out in the direction of the air flow when it reaches the outlet 5 without following the horizontal bar 11a. As a result, most of the main flow of the air flowing through the ventilation path 6 is sent from the substantially central portion to the direction of the airflow flowing through the lower portion as shown by the arrow A1. It is.

In addition, the air passing through the upper part of the ventilation path 6 is guided to the horizontal louver 11a, and is sent out along the upper wall 6a of the ventilation path 6. At this time, since the mainstream air is sent from the outlet 5 in the direction of arrow A1, the amount of air flowing between the upper wall 6a and the horizontal louver 11a is small. For this reason, the sent air is sucked into the main flow (A 1) by the Coanda effect, and is guided in the main flow direction as indicated by an arrow A 4. As a result, the conditioned air is sent downward together with the ions, thereby performing indoor air conditioning and obtaining an air purifying effect and a relaxation effect.

In a stable state in which the temperature in the room is stable, the upper horizontal bar 1 la is arranged at a standard position substantially parallel to the air flowing in the upper part of the air blowing path 6 as shown in FIG. As a result, the air flowing in the upper part of the ventilation path 6 is guided in the direction in which the horizontal louver 11a extends.

The lower horizontal louver 11b is arranged so as to be inclined toward the lower wall 6b of the airflow path 6 toward the downstream side with respect to the airflow of the air flowing through the lower part of the airflow path 6. The air passing through the substantially central portion of the ventilation path 6 has a large amount of air and a large angle between the air flow and the lateral louver 11b. For this reason, the air is sent out in the direction of the air flow when it reaches the outlet 5 without following the lateral louvers 11b. As a result, the mainstream of the majority of the air flowing through the ventilation path 6 is sent from the substantially central portion to the direction of the airflow flowing through the upper portion as shown by the arrow A2.

The air passing through the lower part of the ventilation path 6 is guided to the lateral louvers 11b, and is sent out along the lower wall 6a of the ventilation path 6. At this time, since the mainstream air is sent from the outlet 5 in the direction of arrow A2, the amount of air flowing between the lower wall 6b and the horizontal louver 11b is small. Therefore, the sent air is sucked into the main flow (A 2) by the Coanda effect, and is guided in the main flow direction as shown by arrow A5. As a result, the user is not always hit by cold or warm wind, so that discomfort can be reduced. In addition, a local decrease in body temperature can be prevented.

According to the present embodiment, when the conditioned air is sent downward, the upper horizontal chamber 11a is positioned above the airflow path 6 as the airflow flowing through the upper part of the airflow path 6 moves downstream. Inclined in the direction approaching wall 6a. For this reason, the air above the ventilation path 6 It circulates in contact with the upper wall 6a. As a result, the room temperature air does not flow from the outlet 5 along the upper wall 6a as shown by the arrow B2 (see FIG. 2). Therefore, condensation on the upper wall 6a can be prevented.

Similarly, when sending conditioned air upward, the lower lateral louver 1 lb is closer to the lower wall 6 b of the air flow path 6 as it goes downstream, with respect to the airflow flowing through the lower part of the air flow path 6. It is inclined in the direction to be. For this reason, the air below the ventilation path 6 contacts the lower wall 6b and circulates. As a result, the air at room temperature does not flow from the outlet 5 along the lower wall 6b as shown by the arrow B1 (see FIG. 3). Therefore, dew condensation on the lower wall 6b can be prevented.

In addition, in FIG. 2, the air above the blowing path 6 tries to circulate upward along the upper wall 6 a of the blowing path 6. Therefore, the amount of air blocked by the upper horizontal louver 11a is small. Similarly, in FIG. 3, the air below the ventilation path 6 tends to flow downward through the ventilation path 6. Therefore, a small amount of air is blocked by the lower horizontal louver 11b.

Thereby, the collision between the airflow and the lateral louvers 11a and 11b can be reduced. In addition, the kinetic energy can be efficiently converted to static pressure by preventing a decrease in the flow area of the air sent from the outlet 5. Therefore, it is possible to prevent a decrease in the air volume of the air conditioner. In addition, it is possible to prevent the disappearance of ions and to improve the sterilization and relaxation effects.

Next, FIG. 5 is a side sectional view showing an indoor unit of the air conditioner of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals. In the present embodiment, three horizontal chambers 11 a, 11 c, and 11 b are provided vertically above and below the outlet 5. Other parts are the same as in the first embodiment. When the operation of the air conditioner is started, the blower fan 7 is driven to rotate. Refrigerant from an outdoor unit (not shown) flows to the indoor heat exchanger 9 to operate the cooling cycle. As a result, air is sucked into the indoor unit 1 from the suction ports 4a and 4c. Dust contained in the air is removed by the air filter 8. In addition, the ion generator 30 is driven, and ions are emitted from the discharge surface 30a into the blowing path 6. The air taken into the indoor unit 1 exchanges heat with the indoor heat exchanger 9 and is cooled or heated. Then, the conditioned air passes through the ventilation path 6 and is regulated in the left-right direction by the vertical louvers 12. The central and lower horizontal louvers 11c and 11b are arranged at standard positions substantially parallel to the air flowing through the central part and lower part of the ventilation path 6. As a result, the air flowing through the central part and the lower part of the ventilation path 6 is guided in the extending direction of the horizontal louvers 11c and 11b.

The upper horizontal louver 11 a is arranged so as to incline toward the upper wall 6 a of the air passage 6 as it goes downstream, with respect to the airflow of the air flowing through the upper part of the air passage 6. The air passing between the horizontal louver 1 1c and the horizontal louver 1 1a reaches the outlet 5 without flowing along the horizontal louver 1 1a because the air volume is large and the angle between the air flow and the horizontal louver 1 1a is large. Is delivered in the direction of the air flow when it is done. As a result, most of the main flow of the air flowing through the blowing path 6 is sent out in the direction of the airflow flowing from the substantially central portion to the lower portion as shown by the arrow A1.

In a stable state where the room temperature is stable, the upper and middle horizontal louvers 11a and 11c are arranged at standard positions substantially parallel to the air flowing through the upper part of the ventilation path 6, as shown in Fig. 8. You. Thereby, the air flowing through the upper part and the central part of the ventilation path 6 is guided in the extending direction of the horizontal louvers lla and 11c.

The lower horizontal louver] 1 b is disposed so as to incline toward the lower wall 6 b of the air flow path 6 toward the downstream side with respect to the airflow of the air flowing through the lower part of the air flow path 6. The air passing between the horizontal louver 1 1c and the horizontal louver 1] b does not follow the horizontal louver 1 1b because the amount of air is large and the angle between the air flow and the horizontal louver 1 1b is large. The air is sent in the direction of the air flow when it reaches the outlet 5. As a result, the air flowing through Most of the mainstream is sent from the approximate center to the direction of the airflow flowing upward, as indicated by arrow A2.

The air passing through the lower part of the ventilation path 6 is guided to the lateral louvers 11b, and is sent out along the lower wall 6a of the ventilation path 6. At this time, since the mainstream air is sent from the outlet 5 in the direction of arrow A2, the amount of air flowing between the lower wall 6b and the horizontal louver 11b is small. Therefore, the sent air is sucked into the main flow (A 2) by the Coanda effect and is guided in the main flow direction as shown by arrow A5.

According to the present embodiment, the same effects as in the first embodiment can be obtained. Further, the remaining two horizontal louvers except for the uppermost horizontal louver 11a or the lowermost horizontal louver 11b can control the wind direction of the air sent out from the outlet 5. In the first embodiment, if the direction of the horizontal louver is slightly changed, the wind direction varies greatly, and it is difficult to control the wind direction of the mainstream air. However, in the present embodiment, the direction of the main flow can be easily controlled. Even if four or more horizontal louvers are provided, the wind direction can be controlled more easily than in the first embodiment, but the control of the direction of four or more horizontal louvers is complicated, so three horizontal louvers are provided. Is most desirable. Industrial applicability

According to the present invention, the wind direction changing means changes the wind direction of the air sent from the outlet by the Coanda effect, so that the conditioned air can be brought into contact with the wall surface of the air circulation path near the outlet to be sent. Therefore, dew condensation on the wall surface of the air circulation path can be prevented.

In addition, it is possible to reduce the collision between the airflow and the wind direction variable means. In addition, kinetic energy can be efficiently converted to static pressure by preventing a decrease in the flow area of the air delivered from the outlet. Therefore, it is possible to prevent a decrease in the air volume of the air conditioner. In addition, when an ion generator is provided, it is possible to prevent the disappearance of ions and improve the sterilization and relaxation effect.

Further, according to the present invention, the wind direction changing means can be easily formed by a plurality of wind direction plates. In addition, when the number of wind direction plates is three or more, the wind direction of the air sent from the outlet is easily controlled by the remaining lateral louvers except for the uppermost or lowermost direction direction plate, so that the air flow direction can be controlled. The wind direction due to the dam effect can be varied. Furthermore, if three wind direction plates are used, the direction can be easily controlled.

Claims

The scope of the claims

1. In an air conditioner in which air taken in from an inlet is conditioned and air circulating in an air circulation path is diverted downward or upward by a wind direction changing means and sent out from an outlet, the air direction changing means is The wind direction of the air sent from the outlet is varied by the Coanda effect.

2. The air conditioner according to claim 1, wherein

The air flow path is formed so as to expand toward the downstream side, and the wind direction changing means guides the wind direction of the air sent from the lower portion of the air outlet upward by the Coanda effect.

3. The air conditioner according to claim 1, wherein

The air flow path is formed so as to expand toward the downstream side, and the wind direction changing means guides the wind direction of the air sent from the upper portion of the air outlet downward by the Coanda effect.

4. The air conditioner according to claim 2 or claim 3, wherein

The upper wall of the air circulation path is inclined so as to be higher as going forward.

5. The air conditioner according to any one of claims 1 to 4, wherein

The wind direction changing means includes a plurality of wind direction plates attached to the air outlet and changing the direction.

6. The air conditioner according to claim 5, wherein

When sending air upward from the outlet, the uppermost wind direction plate is arranged at a standard position along the air flowing through the upper part of the air flow path, and when sending air downward from the outlet. Then, the uppermost wind direction plate was moved closer to the upper wall of the air flow path as going downstream from the standard position.

7. The air conditioner according to claim 5, wherein

When sending air downward from the outlet, the lowermost wind direction plate is arranged at a standard position along the air flowing through the lower part of the air circulation path, and sends air upward from the outlet. At this time, the lowermost wind direction plate was moved closer to the lower wall of the air circulation path as it went downstream from the standard position.

8. The air conditioner according to any one of claims 5 to 7, wherein Three or more of the wind direction plates were vertically arranged side by side, and the air sending direction was controlled by the direction of the wind direction plates except the top or bottom.

9. The air conditioner according to any one of claims 5 to 7, wherein

The number of the wind direction boards was three.