JPH0861764A - Air conditioning equipment - Google Patents

Abstract

PURPOSE: To prevent the generation of noises attributed to the turbulence of air current with higher efficiency of equipment by optimizing the flow of air. CONSTITUTION: Upper and lower flaps 61 and 63 are arranged near a diffuser port of an air path 60 and an auxiliary flap 64 on the windward side of the upper and lower flaps 61. In heating operation, a part of hot air flowing on the side of a wall 60A (indicated by the arrow WU) is turned askew downward with the auxiliary flap 64 and then, downward directly with the upper and lower flaps 61. On the other hand, the other part of the hot air flowing on the side of a wall 60B of the air path 60 (indicated by the arrow WL) is turned downward directly with the upper and lower flaps 63. Hence, all of the hot air is discharged downward directly resulting in a higher efficiency. This eliminates leakage of the hot air between one end 61A of the upper and lower flaps 61 and the wall 60A of the air path 60, eventually causing no vortex of air, a factor of a noise on the room side of the upper and lower flaps 61.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to an air conditioner having improved airflow control capability, improved equipment efficiency and efficiency, and noise generation due to turbulence of airflow.

[0002]

2. Description of the Related Art Conventionally, a pair of heat exchangers arranged indoors and outdoors for exchanging heat with a refrigerant, a compressor for compressing the refrigerant, a four-way valve for switching the flow direction of the refrigerant, a capillary tube, etc. There is known an air conditioner capable of performing air conditioning in various operation modes such as heating, cooling, dehumidification, etc.

By the way, in an air conditioner, air that passes through a heat exchanger on the indoor side and is cooled or heated by the heat exchanger is supplied to the room as an air flow by a fan, and the discharge port from which this air flow is discharged. Generally, an airflow direction plate (so-called louver) is provided on the outlet side of the airflow direction. By changing the direction of the airflow direction plate, it is possible to arbitrarily change the airflow direction of the airflow (hereinafter referred to as discharge air) within a predetermined range. There is.

When the air conditioner is a wall-mounted type, for example, when cooling the room, it is easier for the person in the room to feel a comfortable feeling when the room air is blown directly. The direction of the wind direction plate is often adjusted from the horizontal direction to the oblique downward direction so that the air is discharged from the machine toward the occupants.

Further, since cold air stays near the floor in the room during heating, the direction of the wind direction plate may be adjusted so that warm air is discharged from the air conditioner to the vicinity of the floor, preferably directly below. Many.

As described above, by adjusting the air flow direction of the discharge air by the air flow direction plate, the comfort feeling felt by the person in the room is improved.

In the wall-mounted air conditioner, the discharge port is provided in the lower part on the front side (opposite the wall side) of the room,
The air that has passed through the heat exchanger is blown by a fan from diagonally above toward the wind direction plate. An air passage inclined obliquely downward is provided between the fan and the wind direction plate.

When hot air is blown downward during heating, the direction of the wind direction plate is changed so as to be perpendicular to the floor surface.

[0009]

However, if the wind direction plate is perpendicular to the floor surface during heating, the direction of the air flow coming through the air passage and the direction of the wind direction plate are greatly different, and
Warm air leaks from the gap created between the wind direction plate and the wall forming the air passage, reducing the amount of warm air discharged downward, or leaking warm air when the air flow rate is large. There was a case where a vortex was generated and noise was generated. Further, since the warm air blown by the fan can be suddenly turned by the wind direction plate, a large amount of noise is generated, and the wind speed is lowered due to the change of the wind direction, and sometimes the floor surface is not reached.

The present invention has been made in consideration of the above facts, and obtains an air conditioner capable of optimizing the flow of air, increasing the efficiency of the equipment, and preventing the generation of noise due to turbulence of the air flow. That is the purpose.

[0011]

In order to achieve the above object, the present invention according to claim 1 supplies conditioned air heated or cooled by a heat exchanger from a discharge port into a conditioned space. In an air conditioner, an air passage that guides air that has passed through a heat exchanger to a discharge port and a wind direction of conditioned air that is provided near the discharge port and discharged from the discharge port into the air-conditioned space are changed in the vertical direction. A possible discharge air flow direction changing unit, and the wind direction of the air provided toward the discharge air flow direction changing unit in the air passage, which is provided on the windward side of the discharge air flow direction changing unit, moves vertically in the range within the air passage. A changeable auxiliary discharge air direction changing part,
It is characterized by having.

According to a second aspect of the present invention, in the air conditioner according to the first aspect, the direction of the auxiliary discharge airflow direction changing portion is automatically changed based on the direction of the discharge airflow direction changing portion. It has a feature.

[0013]

In the air conditioner according to the first aspect of the present invention, the wind direction of the conditioned air that passes through the heat exchanger and is heated or cooled and then discharged into the air-conditioned space (indoor) is changed in the vertical direction within the air passage. A discharge air direction changing unit that can be changed to is installed near the discharge port, and changes the wind direction of the conditioned air that is blown toward the discharge wind direction changing unit to the upwind side of the discharge air direction changing unit within the air passage. A possible auxiliary discharge airflow direction changing unit is provided.

The discharge airflow direction changing portion can be composed of, for example, an airflow direction plate (louver), and the direction can be changed by driving means such as a motor or manually.

With this configuration, on the windward side of the discharge airflow direction changing portion, the direction of the conditioned air can be changed in advance by the auxiliary discharge airflow direction changing portion, and the conditioned air after passing through the heat exchanger can be changed in the auxiliary discharge airflow direction. It is possible to gradually change the direction of the discharge air direction changing unit in order.
The flow of conditioned air inside the aircraft can be made smooth.

Further, by changing the direction of the flow of the conditioned air in advance by the auxiliary discharge airflow direction changing portion, the air leaks from between the discharge airflow direction changing portion and the wall surface of the air passage, and the direction is different from the direction of the discharge airflow direction changing portion. It becomes possible to collect the conditioned air flowing toward the discharge air flow direction changing portion, and it is possible to supply all the conditioned air after passing through the heat exchanger in a desired direction in the air-conditioned space. This improves the ventilation efficiency.
Further, since conditioned air leaking from between the discharge airflow direction changing portion and the wall surface of the air passage can be eliminated, it is possible to prevent noise caused by the turbulence of the leaked conditioned air.

In the air conditioner according to the second aspect of the present invention, the direction of the auxiliary discharge airflow direction changing portion is automatically changed based on the direction of the discharge airflow direction changing portion, so that the air flow in the machine is smoothed and the heat flow is reduced. It is automatically performed to supply all the conditioned air after passing through the exchanger in a desired direction.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. Although the following description will be given using numerical values that do not hinder the present invention, the present invention is not limited to the numerical values given below.

The air conditioner (so-called air conditioner) according to this embodiment, as shown in FIG. 1, is provided with an indoor unit 10 and an outdoor unit 12, and a refrigerant is provided between the indoor unit 10 and the outdoor unit 12. A coolant circulation path is provided for circulation. The indoor unit 10 is provided with an indoor heat exchanger 16. On the other hand, the outdoor unit 12 is provided with a valve 20 for opening and closing the circulation of the refrigerant, and the indoor heat exchanger 16 is a refrigerant pipe 1 formed of a thick pipe.
It is connected to one end of the valve 20 via 8.

The muffler 22 and the four-way valve 36 are sequentially connected to the other end of the valve 20 via a refrigerant pipe. The four-way valve 36 is switched by the electric circuit of the outdoor unit 12 described later to the state shown by the solid line in FIG. 1 during cooling and to the state shown by the broken line during heating and defrosting. An accumulator 24 and a compressor 26 are sequentially connected to the four-way valve 36 via a refrigerant pipe that communicates with the muffler 22 side during cooling. The compressor 26 is connected such that the accumulator 24 side is the refrigerant suction side.

The refrigerant discharge side of the compressor 26 is connected to a four-way valve 36 via a refrigerant pipe communicating with the muffler 22 side during heating and defrosting, and a muffler 38 is provided in the middle of this refrigerant pipe. Has been. Furthermore, the four-way valve 36
It is connected to one end of the outdoor heat exchanger 28 via a refrigerant pipe that communicates with the muffler 38 side during cooling. The other end of the outdoor heat exchanger 28 is connected to one end of a capillary tube 30 via a refrigerant pipe. Further, between the muffler 38 and the four-way valve 36 is connected to the other end of the outdoor heat exchanger 28 via a refrigerant pipe provided with an electromagnetic valve 40 at an intermediate portion.

A strainer 42 and one end of a valve 32 are sequentially connected to the other end of the capillary tube 30 via a refrigerant pipe, and the other end of the valve 32 is connected to a chamber via a refrigerant pipe 34 formed of a thin tube. It is connected to the inner heat exchanger 16. By the above, a closed refrigerant circulation path, that is, a refrigeration cycle is formed.

In this refrigeration cycle, the solenoid valve 40 is turned off (the refrigerant pipe is closed), and the four-way valve 36 is turned on.
To the state shown by the solid line in FIG.
When 6 is operated, as shown by the solid line arrow in FIG. 1, the refrigerant causes the indoor heat exchanger 16, the refrigerant pipe 18, the valve 20,
The muffler 22, four-way valve 36, accumulator 24, compressor 26, muffler 38, four-way valve 36, outdoor heat exchanger 28, capillary tube 30, strainer 42, valve 32, refrigerant pipe 34, and indoor heat exchanger 16 are circulated in this order. To do. As a result, the refrigerant is vaporized in the indoor heat exchanger 16, and the refrigerant is condensed in the outdoor heat exchanger 28, so that the room can be cooled. When the four-way valve 36 is switched to the state shown by the broken line in FIG. 1, the refrigerant circulates in the opposite direction to the indoor heat exchanger 16 as shown by the broken line arrow in FIG.
By condensing the refrigerant in the above and vaporizing the refrigerant in the outdoor heat exchanger 28, it is possible to heat the room.

FIG. 2 shows a sectional view of the indoor unit 10. The indoor unit 10 is an indoor unit body 10A.
And a mounting base 10B fixed to a wall surface in the room, and the rear side (right side in FIG. 2) of the indoor unit body 10A is mounted to the mounting base 10B,
It is installed at a predetermined position in the room. Indoor unit body 10A
A cross flow fan 50 is arranged in the substantially central portion of the. On the other hand, as shown in FIG. 3, the indoor unit body 10A
A suction grill 52 is formed on the front surface of the. The cross flow fan 50 is arranged so that its intake side faces the suction grill 52, and when the cross flow fan 50 is driven, the air in the room is sucked into the indoor unit 10A through the suction grill 52.

Inside the intake grill 52, an indoor heat exchanger 16 is arranged over the entire surface of the passage through which the air sucked inside the indoor unit body 10A passes, and the indoor heat exchanger 16 is provided. The air purifying filter 54 is diagonally above.
An air filter 54 including A and a deodorizing filter 54B is provided. The air sucked inside the indoor unit body 10A by the drive of the cross flow fan 50 is
The air filter 54 removes dust and deodorizes, and the indoor heat exchanger 16 regulates temperature and humidity.

During cooling and dehumidification, the water contained in the air sucked into the indoor unit body 10A is condensed by being cooled by the indoor heat exchanger 16 and is condensed on the surface of the indoor heat exchanger 16. Adhere to. For this reason,
A drain pan 56 serving as a pan is provided below the indoor heat exchanger 16, and the water adhering to the surface of the indoor heat exchanger 16 is discharged to the outside through the drain pan 56.

As shown in FIG. 3, an outlet grill 58 is formed below the suction grill 52. The exhaust side of the cross flow fan 50 is in communication with the blowout grill 58 through the air passage 60, and the air that has been sucked into the indoor unit main body 10A to be deodorized and deodorized and whose temperature and humidity have been adjusted is cross flowed. The air is blown into the room by the fan 50 through the air passage 60 and the blow grill 58.

In the air passage 60, an upper and lower flap 61 and an upper and lower flap 63, which serve as a discharge air flow direction changing portion, are provided in the vicinity of the outlet of the outlet grill 58 at predetermined intervals. The upper and lower flaps 61 and 63 are connected to each other via a gear (not shown), and their directions are changed by transmitting a driving force of an upper and lower flap motor 74A as a driving unit described later to the gear. It has become so.

Further, the air passage 60 has upper and lower flaps 61.
An auxiliary flap 64 as an auxiliary discharge airflow direction changing portion is provided on the windward side of. The direction of the auxiliary flap 64 is changed by transmitting the driving force of an auxiliary flap motor 74C, which will be described later, as a driving unit.

The upper and lower flaps 61 and the upper and lower flaps 6
By changing the directions of 3 and the auxiliary flap 64, the wind direction of the wind blown from the blow grill 58 through the air passage 60 (the discharge wind of the present invention) is changed.

FIG. 4 shows an electric circuit provided in the indoor unit 10, and this electric circuit includes a power supply board 70 and a control board 72. The power supply board 70 includes a motor power supply circuit 70A that supplies electric power for driving various motors, a control circuit power supply circuit 70B that supplies electric power for operating the control circuit, and a serial circuit power supply that supplies electric power for operating the serial circuit. A circuit 70C is provided. The motor power supply circuit 70A and the control circuit power supply circuit 70B are connected in series between a pair of power supply lines to which commercial power (single-phase 100V) is supplied.
C is a motor power supply circuit 70A and a control circuit power supply circuit 7
0B is connected in parallel.

The control board 72 has a serial circuit 72A connected to the serial circuit power supply circuit 70C for serially communicating with the outdoor unit 12 side, and a drive for driving the motor by the electric power supplied from the motor power supply circuit 70A. A circuit 72B and a microcomputer 72C are provided.

The drive circuit 72B is composed of a stepping motor, and an upper and lower flap motor 74A for rotating the upper and lower flaps 61 and 63 and an auxiliary flap 64.
An auxiliary flap motor 74C for rotating the fan and a fan motor 74B configured by a DC brushless motor for driving the cross flow fan 50 are connected. Drive circuit 72B
The microcomputer 72C corresponds to the control means of the present invention.

The drive circuit 72B is connected to the microcomputer 72C. In the present embodiment, there are six types of positions (angles) of the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps 64 during operation of the air conditioner (see FIG. 6).
(A) to (F) are referred to below, and the positions (A) to (F) are hereinafter referred to as respective positions to), which are set in advance in various operating conditions such as cooling and heating. The optimum position is stored in advance in the memory (not shown) of the microcomputer 72C.

The upper and lower flap motors 74A and 74C are stepping motors, respectively, and the drive circuit 72B has the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps at any of the six positions. When the instruction to rotate 64 is input from the microcomputer 72C, the vertical flap motor 74A and the auxiliary flap motor 74C output pulse signals of the number of pulses corresponding to the deviation between the instructed position and the current position, respectively. Flap 61, upper and lower flap 63, and auxiliary flap 6
4 is rotated to the designated position.

In the upper and lower flap motor 74A, when the operation of the air conditioner is stopped, the upper and lower flaps 61 and 63 are at the positions shown by imaginary lines in FIG. 6, that is, the upper and lower flaps 61 and 63 are the indoor unit body 10A. It is driven so as to move to a position where it does not protrude from the casing.

The drive circuit 72B is a fan motor 74.
By supplying DC power to B to drive the fan motor 74B, and changing the voltage of the DC power according to an instruction from the microcomputer 72C, the rotation speed of the fan motor 74B, that is, the air flow rate of the cross flow fan 50. Adjust. In this embodiment, the voltage can be changed in 256 steps in the range of 12 to 36V by an instruction from the microcomputer 72C.

The microcomputer 72C is connected to a display LED provided on the display board 76 for displaying an operation mode and the like and a receiving circuit for receiving an operation signal from a remote controller, and further provided on the sensor board 78. A floor sensor for detecting the temperature of the floor and an optical sensor are connected. Further, the microcomputer 72C is connected with a room temperature sensor 80A for detecting a room temperature and a heat exchanger temperature sensor 80B for detecting the temperature of the indoor heat exchanger 16, and further, a self-diagnosis LED provided on the switch board 82, An operation changeover switch and a self-diagnosis switch for switching between normal operation and trial operation are connected. The microcomputer 72C monitors outputs from various sensors and switching states of contacts of various switches.

The microcomputer 72C has a serial circuit 72.
It is connected to A and can communicate serially with a microcomputer 102F (described later) provided in the outdoor unit 12 via the serial circuit 72A. The microcomputer 72C includes outputs from various sensors, switching states of contacts of various switches, operation signals received via a receiving circuit, and the outdoor unit 1 received by serial communication.
Based on the operating state of No. 2 and the like, it outputs drive instructions for the upper and lower flap motors 74A, auxiliary flap motors 74C and fan motors 74B to the drive circuit 72B, and outputs various instructions to the outdoor unit 12 via the serial circuit 72A. By doing so, the operation of the entire air conditioner is controlled.

The electric circuit of the indoor unit 10 is an outdoor unit through a terminal connected to a pair of power lines and a terminal connected to the other end of the serial communication line whose one end is connected to the serial circuit 72A. It is connected to the electric circuit provided at 12 (see FIG. 5). Outdoor unit 12
The electric circuit of the rectifier circuit 100 and the control board 10
Equipped with 2. The control circuit 102 includes a serial circuit 7 on the indoor unit 10 side via a serial communication line.
Serial circuit 102A connected to 2A, noise filters 102B, 102C for removing noise from the power supply line, 1
20D, switching power supply circuit 102E, microcomputer 10
2F is provided.

A reactor is connected to the control board 102, and the alternating current supplied through the power supply line connected to the terminal of the rectifier circuit 100 is supplied through the noise filter 102B and the reactor. It
The current rectified by the rectifier circuit 100 is supplied to the inverter 104 connected to the control board 102 via the noise filter 102C. Further, the rectified current is supplied to the switching power supply circuit 102E via the noise filter 102D. The switching power supply circuit 102E is connected to the microcomputer 102F and the inverter 104, and supplies the inverter 104 with electric power for switching the inverter 104 in accordance with an instruction from the microcomputer 102F. A compressor motor 106 for driving the compressor 26 is connected to the inverter 104.

The microcomputer 102F outputs the compressor motor 106 output from the inverter 104 based on the control signal received from the microcomputer 72C of the indoor unit 10.
By changing the frequency (operating frequency) of the AC power for driving (and the compressor 26) (for example, in the range of 18 to 150 Hz), the rotation speed of the compressor 26 is changed and the cooling and heating capacity is adjusted.

Further, the microcomputer 102F has an outside air temperature thermistor 110 as an outside air temperature sensor for detecting the outside air temperature.
A, a temperature thermistor 110B as a temperature sensor for detecting the temperature of the outdoor heat exchanger 28, a compressor temperature thermistor 110C as a temperature sensor for detecting the temperature of the compressor 26, and a serial circuit 102A are connected. Further, on the control board 102, a four-way valve 36 and a solenoid valve 40 (see FIG. 1) provided in the outdoor unit 12, a fan motor 112A for rotating and driving a fan (not shown) that ventilates the outdoor heat exchanger 28, and a fan. The motor capacitor 112B is connected.

Next, the positions of the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps 64 during operation of the air conditioner of this embodiment will be described.

For example, the positions of the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps 64 when the air conditioner is in the air-conditioning operation are in the range (the position position.
The angle in the figure is the angle of the flap with respect to the horizontal direction. ) Is moved to.

On the other hand, during heating operation, the upper and lower flaps 6
1. The positions of the upper and lower flaps 63 and the auxiliary flaps 64 are
The wind direction is moved to the range corresponding to the lower side of the room.

During the heating operation, the warm air blown in the air passage 60 by the cross flow fan 50 is the air passage 60.
A part (arrow WU) flowing on the side of the wall 60A is directed obliquely downward by the auxiliary flap 64, and then directed directly downward by the upper and lower flaps 61. The other part (arrow WL) flowing on the wall 60B side of the air passage 60 is directed directly below by the upper and lower flaps 63.

In particular, at the position, the windward side end 64A of the auxiliary flap 64 is extremely close to the wall 60A of the air passage 60, and when the leeward side is viewed from the windward side of the air passage 60 (arrow A). The other end 64B on the opposite side overlaps with the upper and lower flaps 61 (in the direction of the arrow). For this reason, the warm air is fed to the windward end 61A of the upper and lower flaps 61 and the wall 60A of the air passage 60.
A portion of the warm air (arrow WU) that passes through the wall 60A side of the air passage 60 does not pass between the auxiliary flap 64 and the upper and lower flaps 61 in that order, and is smoothly discharged directly downward. Then, the other part (arrow WL) flowing on the wall 60B side of the air passage 60 is directed and discharged directly downward by the upper and lower flaps 63, and all the warm air is discharged directly downward. For this reason, it becomes possible to improve heating efficiency more than before.
In addition, in the past, since the auxiliary flap 64 is not provided, part of the warm air leaks from between the one end 61A of the upper and lower flaps 61 and the wall 60A of the air passage 60, and all the warm air is discharged in the direct downward direction. I couldn't do it. If the amount of air blown is increased, the warm air can reach the floor even if the loss in changing the wind direction due to the upper and lower flaps 61, 63 is taken into consideration, but the noise when changing the wind direction becomes particularly large, and practically difficult to commercialize. .

That is, when the auxiliary flap 64 is not provided, when the air volume is large, part of the warm air (arrow WU) is swirled (or disturbed) in the air inside the one end 61A of the upper and lower flaps 61. However, in the present embodiment, the auxiliary flap 64 is provided to prevent warm air from leaking from between the one end 61A of the flap 61 and the wall 60A of the air passage 60. There is no air vortex.

In the above description, the positions of the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps 64 are moved to the positions 1 to 6 during the heating operation. However, for example, room temperature (or the temperature near the floor) is particularly high. If the height is low, the positions of the upper and lower flaps 61, 63 and the auxiliary flaps 64 may be fixed such that the time for which the upper and lower flaps 61, 63 and the auxiliary flap 64 are located at the position becomes longer or at the position.

Further, in this embodiment, an example in which the position of the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps 64 is changed to change the wind direction of the discharge air along the vertical direction of the air-conditioned space has been described. The changing direction of the wind direction is not limited to the above, but the wind direction may be changed to the left and right direction by adding a known left and right flap that can change the direction to the left and right.

Further, in the above description, the upper and lower flaps 61, the upper and lower flaps 63, and the auxiliary flaps 64 are positioned at any of the six positions, but the present invention is not limited to this, and the upper and lower flaps 62 may be positioned. The position may be changed more finely.

Further, in this embodiment, the auxiliary flap 64 is provided on the windward side of the upper and lower flaps 61.
It is also possible to provide a plurality of, for example, the upper and lower flaps 63.
An auxiliary flap 64 may be further added on the windward side of.

Further, although the wall-mounted indoor unit has been described above as an example, the configuration of the air conditioner according to the present invention is not limited to the above, and the present invention can be applied to a floor-mounted indoor unit. You can also

FIG. 12 shows a floor-standing type indoor unit 200.
It is shown. The internal configuration of this floor-standing indoor unit 200 is the same as the wall-mounted indoor unit 1 of the above-described embodiment.
Since it is the same as 0, only the main part will be described. Further, the same reference numerals are given to the same configurations as those in the above-mentioned embodiment,
The description is omitted.

As shown in FIG. 12, an air passage 60 is provided above the cross flow fan 50. Then, as in the above-described embodiment, the temperature-controlled and humidity-controlled air is discharged into the room by the crossflow fan 50 through the air passage 60 and the blowout grill 58.

In the air passage 60, upper and lower flaps 61 and 63 are provided at a predetermined interval near the outlet of the outlet grill 58, and an auxiliary flap 64 is provided on the windward side of the upper and lower flaps 61. The upper and lower flaps 61 and 63 are arranged so that their directions are changed by transmitting the driving force of the upper and lower flap motors (not shown), and the auxiliary flap 64 is also transmitted with the driving force of the upper and lower flap motors (not shown). The direction is changed by doing so.

For example, during the cooling operation, the upper and lower flaps 61 and 6 are provided to discharge the cool air directly above.
3 and the auxiliary flap 64 may be set at the positions shown.

In the position shown in FIG. 12, the auxiliary flap 64 is
64A of the windward side is extremely close to the wall 60A of the wind passage 60, and when the leeward side is viewed from the windward side of the wind passage 60 (arrow A direction arrow), the other end 64B on the opposite side is The upper and lower flaps 61 are overlapped. For this reason, the cold air flows toward the windward end 61A of the upper and lower flaps 61 and the wall 60 of the air passage 60.
A portion of the cool air (arrow WU) that does not pass through the air passage 60 and passes through the wall 60A side of the air passage 60 gradually changes its direction in the order of the auxiliary flap 64 and the upper and lower flaps 61, and is smoothly discharged directly above. The other part (arrow WL) flowing on the side of the wall 60B of the air passage 60 is directed directly upward by the upper and lower flaps 63 and discharged, and all the cold air is discharged directly upward. Therefore, it becomes possible to improve the cooling efficiency as compared with the conventional case. Note that, in the related art, since the auxiliary flap 64 is not provided, a part of the cool air flows at one end 61A of the upper and lower flaps 61.
It was impossible to discharge all of the cool air in the direct upward direction because it leaked from between the air passage 60 and the wall 60A of the air passage 60.

When the auxiliary flap 64 is not provided, when the air volume is large, part of the cold air (arrow WU
) May generate a swirl (or turbulence) of air on the indoor side of the one end 61A of the upper and lower flaps 61, but in the present embodiment, the auxiliary flap 64 is provided and one end 6 of the flap 61 is provided.
Since the cold air does not leak from between 1A and the wall 60A of the air passage 60, the vortex of air that causes noise is not generated.

Although the wall-mounted and floor-mounted air conditioners have been described in the above embodiments, the present invention can be applied to other types of air conditioners such as window-mounted type and ceiling-mounted type. Needless to say.

The present invention is also applicable to a fan heater or the like for heating with heat generated by combustion of oil, gas or the like, or heat generated by an electric heater.

[0063]

As described above, according to the first aspect of the invention, since the direction of the conditioned air can be changed in advance by the auxiliary discharge airflow direction changing unit on the windward side of the discharge airflow direction changing unit, the discharge airflow direction is changed. This has the excellent effects of optimizing the flow of conditioned air supplied to the parts, increasing the efficiency of changing the wind direction, and preventing the generation of noise due to turbulence of the air flow.

Further, in the air conditioner according to claim 2,
The direction of the auxiliary discharge airflow direction changing unit is automatically changed based on the direction of the discharge airflow direction changing unit, so that the flow of conditioned air in the machine can be made smooth, or all the conditioned air after passing through the heat exchanger can be set to the desired one. It has an excellent effect that the discharge in the direction is automatically performed.

[Brief description of drawings]

FIG. 1 is a piping diagram showing a refrigeration cycle of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a sectional view of an indoor unit.

FIG. 3 is an external view of an indoor unit.

FIG. 4 is a circuit diagram showing an electric circuit provided in the indoor unit.

FIG. 5 is a circuit diagram showing an electric circuit provided in the outdoor unit.

FIG. 6 is a schematic view showing positions of upper and lower flaps and auxiliary flaps.

FIG. 7 is a schematic view showing positions of upper and lower flaps and auxiliary flaps.

FIG. 8 is a schematic view showing positions of upper and lower flaps and auxiliary flaps.

FIG. 9 is a schematic view showing positions of upper and lower flaps and auxiliary flaps.

FIG. 10 is a schematic view showing positions of upper and lower flaps and auxiliary flaps.

FIG. 11 is a schematic view showing the positions of upper and lower flaps and auxiliary flaps.

FIG. 12 is a sectional view of an indoor unit according to another embodiment of the present invention.

[Explanation of symbols]

 10 Indoor unit (air conditioner) 12 Outdoor unit 16 Indoor heat exchanger 50 Cross flow fan 60 Air passage 61 Upper and lower flaps (discharge air flow direction changing part) 63 Upper and lower flaps (discharge air flow direction changing part) 64 Auxiliary flap (auxiliary discharge air direction change) Part) 72B drive circuit (control means) 72C microcomputer (control means) 74A vertical flap motor (drive means) 74C auxiliary flap motor (drive means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kiyoshi Koyama 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Kensuke Matsumoto 2-5 Keihan Hondori, Moriguchi City, Osaka Prefecture No. 5 Sanyo Electric Co., Ltd. (72) Inventor Masao Ozeki 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. An air conditioner configured to supply conditioned air heated or cooled by a heat exchanger from a discharge port into a space to be conditioned, a wind that guides the air after passing through the heat exchanger to the discharge port. A passage, a discharge wind direction changing unit that is provided near the discharge port and can change the wind direction of the conditioned air discharged from the discharge port into the air-conditioned space in an up-down direction, and a discharge wind direction changing unit in the air passage. An air conditioner, comprising: an auxiliary discharge airflow direction changing unit that is provided on the windward side and that can change the airflow direction of the air blown toward the discharge airflow direction changing unit up and down within a range within the air passage. Machine. 2. The air conditioner according to claim 1, wherein the direction of the auxiliary discharge airflow direction changing unit is automatically changed based on the direction of the discharge airflow direction changing unit.