JP3440903B2 - Air conditioner wind direction control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an air conditioner, and more particularly to a method for controlling a wind direction of an air conditioner for intensively delivering a blowout flow toward a living space.

[0002]

2. Description of the Related Art When heating or cooling is performed by an air conditioner, there is a case where it is desired to positively give a feeling of heating or cooling to a person in a room by sending a concentrated blowout flow toward a living space in the room. is there.

As a method for forming such a concentrated blowout flow, a method described in Japanese Patent Application Laid-Open No. 10-253143 is known. FIG. 17 is a sectional view showing an indoor unit of a conventional air conditioner. In FIG. 17, 1 is a front cover, 2 is an air inlet, 3 is a heat exchanger, 4 is a blower fan, 5 is a rear guider, 6 is a stabilizer, and 8 is an air outlet.

The air introduced from the air inlet 2 by the blower fan 4 is sent out from the air outlet 8 through the air passage 7 formed by the stabilizer 6 and the rear guider 5. A plurality of left and right wind direction blades 10 are rotatably supported in the left and right directions near the air outlet 8 to change the flow of the wind in the left and right directions. Further, a wind improving lower blade 9 is pivotally supported in the air outlet 8 so as to be vertically rotatable, and changes the wind flow in the vertical direction.

18 (a) and 18 (b) are schematic views showing the state of the left and right blades 10 in the wind direction. Wind direction left and right blades 10,
It is divided into both sides with the center of the air outlet 8 as a boundary, and further divided into a left and right wind direction blade 10a near the central portion 8a of the air outlet and a left and right wind direction blade 10b near the left and right portions 8b of the air outlet. There is. Left and right wind direction of the left and right air outlets 1
Of 0b, several left and right wind direction blades 10c located at both ends of the air outlet are installed to be inclined with respect to the rotation axis. The wind direction left and right blades 10a and 10b are connected by a connecting bar 13 for each section, and the wind direction left and right blades 10b at the left and right portions of the air outlet are supported on a movable base 12.

As shown in FIG. 18 (a), in the steady state, the angles of all the left and right wind direction blades 10 are set to positions parallel to the blowing direction. As a result, a uniform blowout flow is delivered in the left-right direction.

On the other hand, as shown in FIG. 18 (b), when a concentrated blowout flow is sent out, the angles of the left and right blades 10a of the wind direction at the center of the air outlet rotate to a slightly inward parallel position, The left and right wind direction blades 10b at the left and right air outlets rotate so that the left and right blades 10b themselves block the wind, and the pedestal 12 holding the left and right blades 10b rotates in an inverted V shape when viewed from above the front. The pedestal 12 is rotated in an inverted V shape in order to prevent the blower fan from making a rattling noise and converge the air flow to the central air outlet 8a. By the arrangement of the left and right wind direction blades 10, the left and right air outlets 8b
Are almost shielded and the air flow is converged on the central air outlet 8a, so that a concentrated blowout flow is delivered from the central air outlet 8a.

[0008]

However, in the above-mentioned conventional technique, the left and right portions 8b of the air outlet are shielded by superimposing a plurality of wind direction left and right blades 10b, and therefore, FIG.
As schematically shown in FIG. 9, the airflow leaks from the gap between the left and right airflow direction blades 10b, and there is a problem that a sufficient flow velocity cannot be obtained at the central portion of the air outlet. If the flow velocity of the blowout flow is insufficient, it is impossible to give the occupants in the room a sufficient feeling of heating and cooling.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a wind direction control method for an air conditioner, which improves the comfort of the living space by increasing the concentrated flow velocity of the blowing flow. And

[0010]

In order to achieve the above object, a method for controlling a wind direction blade according to a first aspect of the present invention is such that an indoor heat exchanger, a blower fan and an air outlet are provided inside an indoor unit. , Which is rotatably supported in the up-and-down direction, and the wind-enhancing lower blade that changes the wind direction in the vertical direction, and a plurality of wind directions that are rotatably supported in the left-right direction in the vicinity of the air outlet to change the wind direction in the horizontal direction. In an air conditioner having left and right blades, and the wind improving lower blade is divided into three in the horizontal direction, the angles of the plurality of wind direction left and right blades are set to a position where the wind direction to be sent is closer to the center, and Set the angle of either the right or left wind improvement lower blade among the divided wind improvement lower blades to the position where the air outlet is open,
And the above-mentioned wind direction blade set to the above open position and the left
Set the angle of the wind improvement lower blade on the opposite side to the above opening.
It is characterized in that it is set to a position in the direction in which the air outlet is closed rather than the open position of the wind improvement lower blade set to the open position.

[0011]

[0012]

The wind direction control method according to a second aspect of the present invention is
During the heating operation, when the temperature of the indoor heat exchanger is in the low temperature part or the high temperature part, the angles of the three divided wind improving lower blades are set to substantially the same position, and the temperature of the heat exchanger is set to the middle temperature part. Of the above three divided wind improving lower blades, the angle of either the right or left wind improving lower blade is set to the position where the air outlet is open, and the center and
The wind vane and the left and right sides set to the above open position
It is characterized in that the wind improving lower blade on the opposite side is set to a position slightly open from the position where the air outlet is closed.

Further, in the wind direction control method according to a third aspect of the present invention, during heating operation, before the temperature of the indoor heat exchanger stabilizes, the angles of the three divided wind improving lower blades are set to substantially the same position. After the temperature is set and the temperature of the indoor heat exchanger stabilizes, the right side of the three divided wind improving lower blades
Set the angle of one of the left wind improvement lower blades to the position where the air outlet is open,
It is characterized in that the wind improving lower blade on the left and right sides of the above-mentioned wind direction blade set to the above position is set to a position slightly open from the position where the air outlet is closed.

[0015]

The wind direction control method according to a fourth aspect of the present invention is
In the cooling operation, after the temperature of the indoor heat exchanger is stabilized, the angles of the three air-conditioning lower blades are set to substantially the same position, and before the temperature of the indoor heat exchanger is stabilized, Right or left of the above-mentioned three parts of the wind improvement lower blade
Either one of the angle of the wind direction vertical blade is set at a position where the air outlet in the open, the center and the open position of the
It is characterized in that the wind improving lower blades on the left and right sides of the wind direction blade set in the above are set to a position slightly open from the position where the air outlet is closed.

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

[0024]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an indoor unit of an air conditioner according to the control method of the present invention, and FIG. 2 is a sectional view taken along line II-II thereof. 1 and 2, 1 is a front cover,
2 is an air inlet, 3 is an indoor heat exchanger, 4 is a blower fan, 5 is a rear guider, 6 is a stabilizer, and 8 is an air outlet. The air introduced from the air suction port 2 by the blower fan 4 is blown out from the air outlet 8 through the air passage 7 formed by the stabilizer 6 and the rear guider 5. A plurality of left and right wind direction blades 20 are pivotally supported in the left and right directions in the vicinity of the air outlet 8 to change the air flow in the left and right directions. Further, the air-improving lower blades 19a, 19b, and 19c are axially rotatably supported by the air outlet 8 so as to be vertically rotatable, thereby changing the wind flow in the vertical direction. The wind improving lower blade is horizontally divided into three parts, and a central wind improving lower blade (central wind improving lower blade) 19a, a left wind improving lower blade (left wind improving lower blade) 19b, and a right wind improving lower blade (right wind improving lower blade). Blade 19c. The central, left and right wind improving lower blades 19a, 19b and 19c rotate independently.

FIG. 3A is a schematic view showing the arrangement of the left and right wind direction blades 20. The left and right wind direction blades 20 are the air outlets 8.
It is divided into both sides with the center of the center as a boundary, and is further divided into a central wind direction left and right blade 20a near the central wind improving lower blade 19a and a left and right wind direction left and right blade 20b near the left and right wind improving lower blades 19b and 19c. ing. Of the left and right wind direction left and right blades 20b, several wind direction left and right blades 20c located at both ends are installed to be inclined with respect to the rotation axis. The left and right wind direction blades 20a and 20b are connected by a connecting bar 23 for each section.
b is supported on a pedestal 22 which is rotatably supported in a substantially horizontal direction.

In the method for controlling the wind direction of the air conditioner of the present invention, the angles of the central left and right blades 20a and the left and right blades 20b are sent in order to send a concentrated blowout flow from the central portion of the air outlet 8. The wind direction is set inward so that the wind direction is closer to the center, and the right wind improving lower blade 19
The angle of c is set to the position where the air outlet 8 is open, while the angle of the left and center wind improving lower blades 19b and 19a is set to a position slightly open from the position where the air outlet 8 is closed. Due to the arrangement of the wind direction blades, as schematically shown in FIG. 4, the central wind direction left and right blades 20a and the left and right wind direction left and right blades 20b form a flow of air toward the center, and further by the left and center wind improving lower blades 19b and 19a. Since the left and center air flows are blocked and concentrated at the right end portion of the air outlet 8, the flow velocity of the blowout flow can be increased to send strong warm air or cool air to the occupants.

The preferred angle settings of the wind improving lower blade and the left and right wind direction blades in the wind direction control method of the present invention will be described.

First, the wind improving lower blade will be described. FIG. 5: is a perspective view which shows typically the angle setting of a wind improvement lower blade. The horizontal is 0 °, the vertical downward is 90 °, the angle of the central wind improving lower blade 19a is θa, the angle of the left wind improving lower blade 19b is θb, and the angle of the right wind improving lower blade 19c is θc.
The angle θc of the right wind improving lower blade 19c may be a position where the right end portion of the air outlet port 8 is open, for example, 0 °.
≦ θc ≦ 80 °, more preferably 10 ° ≦ θc ≦ 70
The angle can be set to 20 °, more preferably 20 ° ≦ θc ≦ 60 °. On the other hand, the left and center wind improving lower blades 19b
The angles θb and θa of 19a and 19a are basically set to a position where the air outlet 8 is closed more than the right wind improving lower blade 19c in order to concentrate the outlet flow at the right end of the air outlet 8. Preferably, the air outlet 8 is in a rotational position slightly opened from the closed position (θb = 140 °), for example, 80 ° ≦ (θb and θa) <140 °, more preferably 90 ° ≦ (θb and θa) ≦ 130 °. , And more preferably 100 ° ≦ (θb and θa) ≦ 120 °. The left and center wind improving lower blades 19b and 19a are slightly opened from the position where the air outlet 8 is closed, so that the center and the left end of the air outlet 8 are closed and the air is discharged from the right end of the air outlet 8. Due to the suction effect of the blowout flow, the airflow path 7 near the center and the left end of the air blowout port 8 is decompressed, and the airflow of the blowout flow is disturbed. As a result, the flow velocity is reduced and airflow noise (rumble noise) is generated. Because.

FIG. 6 is a graph showing the relationship between the rotation angles (θb and θa) of the wind improving lower blades (19b and 19a) which tend to be blocked during the heating operation and the maximum temperature reached on the floor surface. The maximum temperature that reaches the floor depends on the outlet temperature and the flow velocity of the outlet flow. The rotation angle of the right wind improving lower blade 19c is θc = 50 so that the floor surface temperature becomes the maximum temperature.
It is fixed at °. As can be seen from FIG. 6, the angles of the left and center wind improving lower blades 19b and 19a are slightly open (θb and θa = 110 °) from the position (θb and θa = 140 °) where the air outlet 8 is closed. The temperature reached to the floor is highest when

Next, the angle setting of the left and right blades in the wind direction will be described. Examples of angle settings of the left and right wind direction blades for forming the air flow toward the center are shown in FIGS. 3 (b), 3 (c) and 3 (d). In FIG. 3B, the central wind direction left and right blades 20a and the left and right wind direction left and right blades 20b are set to be inclined inward at an appropriate angle (for example, about 30 °). In order to further concentrate the air flow in the center, FIG. 3 (c)
As shown in, it is preferable to further rotate only the left and right airflow direction left and right blades 20b inward to set the angle of the left and right airflow direction left and right blades 20b to a position that shields the blowoff flow in the left and right portions of the air outlet port 8. Furthermore, as shown in FIG. 3D, the pedestal 22b holding the left and right wind direction blades 20b is attached to the central wind direction left and right blades so that the air on the left and right side portions of the air outlet is smoothly converged to the right of the center portion. The pedestal 22c holding the right and left blades 20b in the right wind direction is rotated in an inverted C shape so that the end portion near the blades 20a is closer to the leeward side than the other end. It is preferable to rotate in a V shape so as to be on the windward side. The drive source for rotating the pedestals 22b and 22c can be realized by a motor, a plunger mechanism, or the like.

FIG. 7 shows the result of confirming the effect of improving the flow velocity of the blowout flow by the arrangement of the left and right wind direction blades and the wind improving lower blade by measuring the floor surface temperature. 7 (a) and 7 (b) show the indoor distribution of the floor surface temperature when the room is heated by the air conditioner 25, and the result of measuring the temperature of a predetermined corner for each compartment in the room is shown as a numerical value. It shows with. Figure 7
In FIG. 3A, the left and right wind direction blades are set to the angle shown in FIG. 3D, and the central wind improving lower blade angle θa and the left and right wind improving lower blade angles θb and θc are both set to 50 °. In Fig. 7 (b), the wind direction left and right blades are shown in Fig. 3 (d).
The angle θc of the right wind improving lower blade is set to 50
And the angles θb and θa of the left and center wind improving lower blades are 110 °. That is, FIG. 7A shows the temperature distribution when a concentrated blowout flow is formed only by the left and right blades in the wind direction, and FIG. 7B shows the temperature distribution when a concentrated blowout flow is formed by the wind direction control method of the present invention. The temperature distribution in the case of doing is shown. As can be seen from FIGS. 7A and 7B, according to the wind direction control method of the present invention, it is possible to increase the flow velocity of the blowout flow and improve the floor surface maximum temperature.

Next, an example of the wind direction control when the air conditioner is heated by using the wind direction control method according to the present invention will be described. FIG. 8 is a block diagram showing a control system that performs wind direction control. The control unit 35 includes an operation mode setting input unit 29, a wind direction setting input unit 30, and an air volume setting input unit 3.
1, indoor temperature setting input means 32, indoor temperature detection means 3
3, indoor pipe temperature detecting means 34, central wind improving lower blade angle changing means 36, left wind improving lower blade angle changing means 37b, right wind improving lower blade angle changing means 37c, central wind direction left and right blade angle changing means 39, left and right wind direction left and right blade angles Changing means 40,
The wind direction left and right blade base angle changing means 42 is electrically connected.

9 and 10 show the control unit 35 during the heating operation.
It is a flow chart which shows wind direction control by. Depending on user settings, room temperature, etc., decide whether to perform "spot drive" that sends a concentrated blowout flow from the central part of the air outlet or "normal drive" that sends a blowout flow from the entire air outlet. To do. First, in step S1, the input values of the operation mode setting, the wind direction setting, the air volume setting, and the room temperature setting (tr0) set by the user using the remote controller or the like are updated. The operation mode setting is for setting the operation power desired by the user, and is of two types, for example, "high capacity operation" and "normal operation". The wind direction setting is for setting the direction of the blowout flow desired by the user, and includes, for example, "automatic", "parallel", "wide", "spot", "left",
There are eight types: "right", "left spot", and "right spot". Here, "parallel" means a frontward parallel wind direction, "wide" means a laterally widened wind direction, "spot" means a concentrated wind direction at the front, and "left" means a leftward wind direction. “Right” means a rightward wind direction, “left spot” means a leftward concentrated wind direction, and “right spot” means a rightward concentrated wind direction. The air volume setting is for setting the flow velocity of the blowout flow, and includes "automatic" and five-step manual setting (SHI, M
e +, Me, Me-, Lo). Where SHI, M
The terms e +, Me, Me-, and Lo mean that the air volumes are the strongest, slightly strong, medium, slightly weak, and weakest, respectively.

Next, at step S2, when the operation mode is not "high capacity operation", the routine proceeds to step S17 to perform normal drive, while when the operation mode is "high capacity operation", it proceeds to step S3. Transition. In step S3, if the wind direction setting is neither "automatic", "parallel", "wide", or "spot", step S17.
On the other hand, when the wind direction setting is any one of the above, the process proceeds to step S4.

Next, in step S4, the room temperature t
After detecting r, the process proceeds to step S5, and (tr-tr0)
When> -2.0 is not satisfied, the process proceeds to step S17 to perform normal drive, while when it is satisfied, the process proceeds to step S6. In step S6, the operating time T1 (minutes) is calculated, and when T1 is longer than 20 minutes, the process proceeds to step S17 to perform normal drive, while when T1 is 20 minutes or less, the process proceeds to step S8.

In step S5, it is determined whether or not the room temperature is stable, and the spot drive is not performed until the room temperature is stable. The spot drive is one in which the air flow is limited to a specific direction, and the temperature distribution in the entire room becomes poor. Therefore,
This is because if spot driving is performed before the room temperature stabilizes, the room temperature does not rise sufficiently. Further, the reason why the spot drive is not performed until 20 minutes after the start of operation in step S6 is that if the spot drive is performed immediately after the start of operation, the load of the refrigeration cycle becomes overloaded and the compressor is loaded. .

Next, in step S8, the elapsed time T2 (minutes) from the start of the previous normal drive is calculated. If T2 is shorter than 15 minutes, the process proceeds to step S17 to perform normal drive, while T2 is If it is 15 minutes or less, the process proceeds to step S10.

Next, in step S10, the indoor piping temperature (= indoor heat exchanger temperature) tp (° C.) is detected, and in steps S11 to S15, the magnitude is compared with a reference value that differs depending on the air volume setting, and normal driving is performed. Whether to perform spot driving or to perform spot driving is determined. The reason for making such a determination will be described later.

Steps S11 to S15 will be described in detail. First, in step S11, when the air volume setting is not "SHI", the process proceeds to step S13, while when the air volume setting is "SHI", the process proceeds to step S12, and when tp is higher than 45 ° C, step S17.
When tp is 45 ° C. or less, the process proceeds to step S16 and spot driving is performed. In step 13, when the air volume setting is not "automatic", "Me +" or "Me", the processing proceeds to step S15, while when the air volume setting is "automatic", "Me +" or "Me", the processing proceeds to step S14. If tp is higher than 49 ° C., the process proceeds to step S17 to perform normal drive, while tp is 49
When the temperature is equal to or lower than ° C, the process proceeds to step S16 to perform spot driving. In step S15, when tp is higher than 55 ° C., the process proceeds to step S17 to perform normal driving, while when tp is 55 ° C. or less, the process proceeds to step S16 to perform spot driving.

In the spot drive of step S16 and the normal drive of step S17, the central wind improving lower blade is set based on the settings determined for each of the indoor pipe temperature regions A, B, C, D and E shown in FIG. , The left and right wind improving lower blades, the central wind direction left and right blades, the left and right wind direction left and right blades, and the wind direction left and right blade pedestals are set. In order to prevent hunting, the boundary temperature of each region is set to 2 when the temperature rises and when the temperature falls.
It has a temperature difference of ~ 3 ° C.

In step S16, the angle setting of the wind direction blades in each temperature range when performing spot driving is shown in Table 1.
Is the street.

[0043]

[Table 1]

As shown in Table 1, when the indoor pipe temperature (= indoor heat exchange temperature) tp is in the low temperature region (region A or B) or the high temperature region (region D or E), the air is blown out from the entire surface. On the other hand, when the indoor piping temperature is in the medium temperature range, the blowout flow is sent out, and the blowout flow is intensively sent out from the central part of the air outlet. The indoor piping temperature correlates with the temperature of the outlet flow.
The reason why the concentrated blowout flow is not sent when the indoor piping temperature is in a low temperature range is to prevent the occupants from feeling a cold wind and to obtain a good temperature distribution in the indoor periphery.
On the other hand, the reason why the blowout flow is not concentrated when the temperature of the indoor piping is in the high temperature region is to prevent overheating of the indoor piping.

Table 2 shows the angle setting of the wind direction blades in each temperature region when the normal driving is performed in step S17.

[0046]

[Table 2]

In steps S11 to S15,
The reason for setting the reference value of the pipe temperature that differs depending on the air flow rate setting is as follows. In the spot drive, when the temperature range enters the C range, the left and right wind direction left and right blades rotate to the shielding position, the left wind direction left and right blade bases rotate in an inverted C shape, and the right wind direction left and right blade bases rotate in a C shape. To do. However, when such an arrangement of the wind direction blades is performed when the air volume is large, the pipe temperature rises due to overload, and the transition from the C region to the D region immediately results in unstable operation of the wind direction blades. Therefore, the higher the air volume setting, the lower the pipe temperature reference value,
The spot driving is performed only when the pipe temperature is equal to or lower than the reference value to stabilize the operation of the wind direction blades.

Next, an example of wind direction control at the time of cooling operation of the air conditioner using the wind direction control method according to the present invention will be described. FIG. 12 is a flowchart showing the wind direction control by the control unit 35 of the air conditioner 25 during the cooling operation. First, in step S21, the operation mode setting, the wind direction setting, and the room temperature setting (tr0) set by the user
The input value of is updated.

In step S22, when the operation mode is not "high capacity operation", the routine proceeds to step S29 to perform normal drive, while when the operation mode is "high capacity operation", the routine proceeds to step S23. In step S23, if the wind direction setting is neither "automatic", "parallel", "wide", or "spot", the process proceeds to step S29 to perform normal drive, while the wind direction setting is one of the above. In that case, the process proceeds to step S24. In step S24, after detecting the room temperature tr, the process proceeds to step S25 and continuously (tr-tr0) <2.0 for 5 minutes.
If is satisfied, the process proceeds to step S29 to perform normal drive, while if not satisfied, the process proceeds to step S26.
In step S26, the elapsed time T3 (minutes) from the start of high-capacity operation is calculated, and when T3 is 20 minutes or more, the process proceeds to step S29 to perform normal drive, while when T3 is shorter than 20 minutes, step The process proceeds to S28 and spot driving is performed.

In step S24, spot driving is not performed when the room temperature is stable. This is because after the room temperature stabilizes, the room temperature has dropped sufficiently, so that spot driving is performed to concentrate cool air on the occupants, which rather causes discomfort. Further, for the same reason, in step S26, the spot drive is forcibly ended after a predetermined time has elapsed from the start of the high-capacity operation.

In the spot drive of step S28 and the normal drive of step S29, the angle of the wind direction blade is set according to Table 3.

[0052]

[Table 3]

Next, another embodiment of the present invention will be described with reference to the drawings. Regarding the perspective view and the cross-sectional view showing the indoor unit of the air conditioner, FIG.
Since it is the same as FIG. 2, the drawing and description thereof are omitted. Also,
FIG. 13A is a schematic view showing the arrangement of the left and right wind direction blades 20 according to another embodiment of the present invention, but the description is omitted because it is the same as FIG. 3A.

In the wind direction control method for an air conditioner according to another embodiment of the present invention, the central air flow direction left and right blades 2 are provided in order to send a concentrated blowout flow from the central portion of the air outlet 8.
0a and the left and right wind direction The angles of the left and right blades 20b are set inward so that the wind direction to be sent is closer to the center,
The angle of the left wind improving lower blade 19b is set to a position where the air outlet 8 is opened, while the right and center wind improving lower blades 19b are set.
The angles c and 19a are set to a position slightly open from the position where the air outlet 8 is closed. Due to the arrangement of the wind direction blades, as shown in FIG.
0a and left and right wind direction left and right blades 20b form a flow of air toward the center, and further right and center wind improving lower blades 1
The right and center air flows are blocked by 9c and 19a and concentrated at the left end portion of the air outlet 8, so that the flow velocity of the blowout flow can be increased and strong warm air or cold air can be delivered to the occupants. .

A preferred angle setting of the wind improving lower blade and the left and right wind direction blades in the wind direction controlling method according to another embodiment of the present invention will be described.

First, the wind improving lower blade will be described. In FIG. 5, the angle θb of the left wind improving lower blade 19b may be a position where the left end portion of the air outlet 8 is opened,
For example, 0 ° ≦ θb ≦ 80 °, more preferably 10 ° ≦ θ
It is possible to set b ≦ 70 °, more preferably 20 ° ≦ θb ≦ 60 °. On the other hand, the angles θc and θa of the right and center wind improving lower blades 19c and 19a close the air outlet 8 more than the left air improving lower blade 19b in order to concentrate the blowout flow at the left end portion of the air outlet 8. The position is basically set, and preferably the air outlet 8
From a closed position (θc = 140 °), which is slightly open, for example, 80 ° ≦ (θc and θa) <140 °, more preferably 90 ° ≦ (θc and θa) ≦ 130 °,
More preferably 100 ° ≦ (θc and θa) ≦ 12
Set to 0 °. The reason for slightly opening the right and central wind improving lower blades 19c and 19a from the position where the air outlet 8 is closed is to close the center and the left end of the air outlet 8,
Due to the suction effect of the blowout flow delivered from the right end of the air outlet 8, the air passage 7 near the center and the left end of the air outlet 8 is depressurized, and the airflow of the outlet is disturbed.
On the contrary, the flow velocity is reduced and airflow noise (rumble noise) is generated.

FIG. 15 shows the rotation angle (θc) of the wind improving lower blades (19c and 19a) which tend to be blocked during the heating operation.
And θa) is a graph showing the relationship between the maximum temperature reached on the floor surface. The maximum temperature that reaches the floor depends on the outlet temperature and the flow velocity of the outlet flow. The rotation angle of the left wind improving lower blade 19b is θb = 5 so that the floor surface temperature becomes the maximum temperature.
It is fixed at 0 °. As can be seen from FIG. 15, the angles of the right and center wind improving lower blades 19c and 19a are at positions where the air outlet 8 is closed (θc and θa = 140).
Position slightly open from (°) (θc and θa = 110 °)
The temperature reached to the floor is highest when

Next, the angle setting of the left and right blades in the wind direction will be described. 13B, 13C, and 13D show examples of setting the angles of the left and right wind direction blades for forming the air flow toward the center. In FIG. 13B, the central airflow direction left and right blades 20a and the left and right airflow direction left and right blades 20b are set to be inclined inward at an appropriate angle (for example, about 30 °).
To further concentrate the air flow in the center,
As shown in (c), it is possible to further rotate only the left and right airflow direction left and right blades 20b inward to set the angle of the left and right airflow direction left and right blades 20b to a position that shields the blowout flow in the left and right portions of the air outlet 8. preferable. Furthermore, since the air in the left and right parts of the air outlet is smoothly converged to the left from the central part, as shown in FIG.
The pedestal 2 holding the left wind direction left and right blades 20b is rotated by rotating the pedestal 22c holding the left wind direction left and right blades 20a so that the end portion near the central wind direction left and right blades 20a is on the leeward side of the other end.
It is preferable to rotate 2b in a V-shape so that the end portion near the central wind direction left and right blades 20a is on the windward side of the other end. As a drive source for rotating the pedestals 22b and 22c,
It can be realized by a motor and a plunger mechanism.

FIG. 16 shows the result of confirming the effect of improving the flow velocity of the blowout flow by arranging the left and right wind direction blades and the wind improving lower blade by measuring the floor surface temperature. 16 (a) and 16 (b) show the indoor distribution of the floor surface temperature when the room is heated by the air conditioner 25, and the result of measuring the temperature of a predetermined corner for each compartment in the room is shown as a numerical value. It shows with. FIG.
In (a), the left and right wind direction blades are set to the angles shown in FIG. 13 (d), and the central wind improving lower blade angle θa and the left and right wind improving lower blade angles θb and θc are both set to 50 °. In FIG. 16B, the left and right wind direction blades are shown in FIG.
With the angle setting shown in (d), the angle θb of the left wind improving lower blade
Is 50 ° and the angles θc and θa of the lower and right wind improving lower blades are 110 °. That is, FIG. 16A shows a temperature distribution in the case where a concentrated blowout flow is formed only by the left and right blades in the wind direction, and FIG. 16B shows a temperature distribution in which a concentrated blowout flow is formed by the wind direction control method of the present invention. The temperature distribution in the case of doing is shown. As can be seen from FIGS. 16 (a) and 16 (b), according to the wind direction control method of the present invention, it is possible to increase the flow velocity of the blowout flow and improve the floor surface maximum temperature.

Next, a wind direction control method for heating the air conditioner by using the wind direction control method according to another embodiment of the present invention will be described. It should be noted that the block diagram showing the control system for performing the wind direction control in FIG. 8 and the flowchart showing the wind direction control by the control unit 35 during the heating operation in FIGS. 9 and 10 are the same as before until step S15 and will therefore be omitted.

In step S16, the angle setting of the wind direction blades in each temperature region when the spot drive is performed is shown in Table 4.
Is the street.

[0062]

[Table 4]

Table 5 shows the angle settings of the wind direction blades in each temperature range when the normal driving is performed in step S17.

[0064]

[Table 5]

Next, a description will be given of a wind direction control method when the air conditioner is in a cooling operation by using the wind direction control method according to another embodiment of the present invention. Note that the flow chart of FIG. 12 showing the wind direction control by the control unit 35 of the air conditioner 25 during the cooling operation is the same as that of the previous embodiment up to step 27, and therefore will be omitted.

In the spot drive of step S28 and the normal drive of step S29, the angle of the wind direction blade is set according to Table 6.

[0067]

[Table 6]

[0068]

Since the present invention is constructed as described above, it has the following effects.

According to the wind direction blade control method of the first aspect of the present invention, in the air conditioner in which the wind improving lower blade is divided into three in the horizontal direction, the angles of a plurality of wind direction left and right blades are sent out. Is set to the position near the center,
Set the angle of either the right or left wind improvement lower blade to the position where the air outlet is open ,
The wind direction blade set to the open position and the opposite side
In order to set the wind improving lower blade to a position closer to the air outlet than the open position of either the right or left wind improving lower blade, the air flowing toward the center by the left and right blades A flow is formed, and the air outlet is set to the center where it acts in the closing direction and the above-mentioned open position.
The flow of air is reduced by the wind improving lower blades on the left and right sides of the wind direction blade, and either the right side or the left side of the air outlet is supplied.
Since it concentrates on one end, the flow velocity of the outlet flow can be increased even when installed in the left or right corner of the room, and the comfort of the living space can be improved.

[0070]

[0071]

Further, according to the wind direction control method of the second aspect , during the heating operation, when the temperature of the indoor heat exchanger is in the low temperature part or the high temperature part, the angles of the wind improving lower blades are set to substantially the same position. When the temperature of the heat exchanger is in the middle temperature section, set the angle of either the right or left wind improving lower blade to the position where the air outlet is open, and set the center and the above.
The wind direction blade set to the open position and the opposite side
The wind improving lower blade is set to a position slightly open from the position where the air outlet is blocked, so that cold air is blown to the occupants to cause discomfort and the indoor heat exchanger is prevented from overheating. You can

Further, according to the wind direction control method of the third aspect , during the heating operation, before the temperature of the indoor heat exchanger stabilizes, the angles of the wind improving lower blades are set to substantially the same position.
And, after the temperature of the indoor heat exchanger becomes stable, right or left
Either set the angle of the wind improvement lower blade to the position where the air outlet is open, and set it to the center and the position where it is opened above.
Since the wind improving lower blades on the left and right opposite to the set wind direction blades are set to a position slightly open from the position where the air outlet is closed, the room temperature can be raised to the desired temperature smoothly.

[0074]

According to the wind direction control method of the fourth aspect , during the cooling operation, after the temperature of the indoor heat exchanger is stabilized, the angles of the wind improving lower blades are set to substantially the same position.
And, the right or left had before the temperature of the indoor heat exchanger is stabilized
Set the angle of the one of the wind improvement lower blades to the position where the air outlet is open, and set it to the center and the position where it is opened above.
Since the wind improvement lower blades on the left and right sides of the set wind direction blades are set to a position slightly open from the position where the air outlets are closed, cold wind is blown to the occupants when the room temperature is low, causing discomfort. Can be prevented.

[0076]

[0077]

[0078]

[0079]

[0080]

[0081]

[0082]

[Brief description of drawings]

FIG. 1 is a perspective view showing an indoor unit of an air conditioner according to a wind direction control method of the present invention.

FIG. 2 is a sectional view taken along the line II-II of the air conditioner shown in FIG.

FIG. 3A is a schematic view showing the arrangement of left and right wind direction blades according to the wind direction control method of the present invention, FIG. 3B is the same schematic view, FIG. 3C is the same schematic view, and FIG.

FIG. 4 is a schematic diagram showing an air flow in the wind direction control method of the present invention.

FIG. 5 is a schematic diagram showing an angle setting of a wind improvement lower blade according to the wind direction control method of the present invention.

FIG. 6 is a graph showing the relationship between the angle setting of the left and right wind improving lower blades and the maximum temperature reached on the floor surface in the wind direction control method of the present invention.

FIG. 7 (a) is a temperature distribution diagram showing a distribution of indoor floor temperature by a conventional wind direction control method, and FIG. 7 (b) is a distribution of indoor floor temperature when heating is performed by the wind direction control method of the present invention. Temperature distribution map

FIG. 8 is a block diagram showing a wind direction control system of an air conditioner according to the wind direction control method of the present invention.

FIG. 9 is a flowchart showing an example of wind direction control when heating is performed by the wind direction control method of the present invention.

FIG. 10 is a flowchart showing an example of wind direction control when heating is performed by the wind direction control method of the present invention.

FIG. 11 is a schematic diagram showing divisions of indoor pipe temperature regions.

FIG. 12 is a flowchart showing an example of wind direction control when cooling is performed by the wind direction control method of the present invention.

13A is a schematic view showing the arrangement of left and right wind direction blades according to another wind direction control method of the present invention, FIG. 13B is the same schematic view, FIG. 13C is the same schematic view, and FIG.

FIG. 14 is a schematic diagram showing an air flow in another wind direction control method of the present invention.

FIG. 15 is a graph showing the relationship between the angle setting of the left and right wind improving lower blades and the floor surface maximum temperature in another wind direction control method of the present invention.

FIG. 16 (a) is a temperature distribution diagram showing the distribution of indoor floor surface temperature by a conventional wind direction control method, and FIG. 16 (b) is a distribution of indoor floor surface temperature when heating is performed by another wind direction control method of the present invention. Temperature distribution map

FIG. 17 is a sectional view showing an air conditioner according to a conventional wind direction control method.

FIG. 18 is a schematic diagram showing angle settings of left and right wind direction blades according to a conventional wind direction control method.

FIG. 19 is a schematic diagram showing an air flow according to a conventional wind direction control method.

[Explanation of symbols]

1 Front cover 2 Air inlet 3 Indoor heat exchanger 4 Blower fan 5 Rear Gaida 6 Stabilizer 7 air duct 8 air outlets 19a Central wind improving lower blade 19b Left wind improvement lower blade 19c Right wind improvement lower blade 20a Central wind direction left and right blades 20b Left and right wind direction 22b Left and right wind pedestals 22c Right and left wing base

Front page continuation (72) Inventor Masaya Hayama, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-8-247531 (JP, A) JP-A-10-227519 ( JP, A) Actual Kaihei 4-64043 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24F 11/02 102

Claims (4)

(57) [Claims] 1. An indoor heat exchanger, a blower fan, and an air outlet, which are rotatably supported in the indoor unit so as to be vertically rotatable.
The wind improving lower blade includes a wind improving lower blade that changes the wind direction in the vertical direction, and a plurality of left and right wind direction blades that are rotatably supported in the left and right directions near the air outlet and that changes the wind direction in the horizontal direction. In the air conditioner divided into three parts in the direction, the angles of the plurality of wind direction left and right blades are set to positions where the sent wind direction is closer to the center, and the right or left of the three divided wind improvement lower blades is set. The angle of one of the wind improving lower blades was set to a position where the air outlet was open, and was set to the center and the above-mentioned open position.
Wind direction control of an air conditioner in which the angle of the wind improving lower blade on the left and right opposite sides of the wind direction blade is set to a position in the direction of closing the air outlet from the open position of the wind improving lower blade set to the open position. Method. 2. During the heating operation, when the temperature of the indoor heat exchanger is at a low temperature part or a high temperature part, the angles of the three divided air improving lower blades are set to substantially the same position, and the heat exchanger is set . When the temperature is in the middle temperature section, the angle of either the right or left wind improving lower blade among the three divided air improving lower blades is set to the position where the air outlet is opened,
The wind vane set in the center and the above-mentioned open position
The wind direction control method according to claim 1, wherein the wind improvement lower blades on the left and right sides of the root are set to a position slightly open from the position where the air outlet is closed. 3. In the heating operation, before the temperature of the indoor heat exchanger stabilizes, the angles of the three divided air improving lower blades are set to substantially the same position so that the temperature of the indoor heat exchanger is After stabilizing, the angle of either the right or left wind improving lower blade among the three divided wind improving lower blades is set to the position where the air outlet is opened, and the center and
The wind vane and the left and right sides set to the above open position
The wind direction control method according to claim 1, wherein the wind improving lower blade on the opposite side is set to a position slightly open from a position where the air outlet is closed. 4. During the cooling operation, after the temperature of the indoor heat exchanger is stabilized, the angles of the three divided air-conditioning lower blades are set to substantially the same position, and the temperature of the indoor heat exchanger is changed. Before stabilizing, the angle of either the right or left wind improving lower blade among the three divided wind improving lower blades is set to the position where the air outlet is open, and the center and
The wind vane and the left and right sides set to the above open position
The wind direction control method according to claim 1, wherein the wind improving lower blade on the opposite side is set to a position slightly open from a position where the air outlet is closed.