JP2001153433A - Wind direction control method for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that forward arrival distance becomes short and a low-temperature region stays at the corner of a room when the angle of a blow-off flow is increased in heating. SOLUTION: In an indoor machine where a wind direction up/down blade is divided into three portions in a horizontal direction while the indoor machine is provided with a human position detection means for detecting the position of a remote controller, the angle of the wind direction left/right blade is set so that the direction of wind to be sent faces outward for the position of the remote controller, at the same time the angle of the wind direction up/down blade corresponding to a region where the remote controller is located is set so that it becomes larger than that of the other two wind direction up/down blades.

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 capable of uniformly controlling an indoor environment without impairing comfort.

[0002]

2. Description of the Related Art When an indoor environment is controlled by an air conditioner, it is important to uniformly control the indoor environment without causing discomfort to residents. Except when starting up the cooling system, it is required that the occupants not feel the blowout of the indoor unit during normal operation. For example, at the time of the heating operation, it is desirable to uniformly heat all corners of the room without generating noise or the like. In addition, during the dehumidifying operation, it is desirable that the humidifier can uniformly dehumidify without giving a sense of wind speed so that the resident does not feel chills.

Conventionally, in order to uniformly control the indoor environment,
The following wind direction control method was used. FIG.
It is sectional drawing which shows the indoor unit of the conventional air conditioner. FIG.
1, 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.

[0004] The air introduced from the air inlet 2 by the blower fan 4 is sent out from the air outlet 8 through the blower path 7 formed by the stabilizer 6 and the rear guider 5. A plurality of wind direction left and right blades 10 are rotatably supported in the vicinity of the air outlet 8 so as to be rotatable in the left and right directions, and change the flow of the wind horizontally. Further, a lower wind improvement blade 9 is rotatably supported in the air outlet 8 in a vertically rotatable manner, and changes the flow of the wind in the vertical direction.

FIGS. 12A and 12B are schematic diagrams showing the states of the left and right wind direction blades 10 and the lower wind improvement blade 9.
The left and right wind direction blades 10 are disposed on both sides of the center of the air outlet 8 and are connected by a connecting bar 13 so as to interlock with each section.

[0006] In order to uniformly heat the room, it is necessary to widen the air blowing flow so that the air can reach the corners of the room. Therefore, conventionally, at the time of heating, FIG.
As shown in (a), the angle of the wind direction left and right blades 10 is set to a C-shaped position where the leeward side spreads when viewed from above the front, and the angle of the wind improvement lower blades 9 is set to an obliquely downward position. A wide-angle outlet flow was formed.

[0007] When dehumidifying the interior of a room, it is desirable to keep the resident from blowing airflow so that the resident does not feel a cool wind. Therefore, conventionally, at the time of dehumidification, FIG.
As shown in (b), the angle of the wind direction left and right blades 10 is set to a C-shaped position as viewed from above in front, and the angle of the wind enhancement lower blade 9 is set to be horizontal, as in heating.
The wind direction was controlled so that the outlet stream did not hit the residents.

[0008]

However, the above-mentioned prior art has the following problems. First, in the case of heating, there is a certain limit in widening the blowout flow by the wind direction left and right blades 10, and it is difficult to widen the angle beyond about 110 degrees as schematically shown in FIG.
Further, when the blowout flow is widened by the wind direction left and right blades 10, the forward reach of the blowout flow becomes short. Therefore, when heating a large room, there is a problem that a low-temperature region remains in a corner of the room as shown in FIG. Increasing the air flow can extend the reach of the blowout flow, but increases noise.

On the other hand, in the case of performing dehumidification, since a wind leaks from between the wind direction left and right blades 10, a blowout flow in the front direction remains, and the sense of airflow given to the occupant can be sufficiently reduced. It was difficult. In addition, if the remaining blow-off flow in the front direction is to be completely blocked by the wind-enhancing lower blades 9 and the like, the wind-enhancing lower blades 9 and the like will condense and generate turbulent noises.

[0010] Further, there is a problem that if the resident is not in the center of the room, a sufficient effect cannot be obtained.

The present invention has been made in view of the above problems, and has as its object to provide a wind direction control method for an air conditioner that can uniformly control the indoor environment without impairing comfort.

[0012]

In order to achieve the above object, a wind direction control method according to the present invention is characterized in that an indoor heat exchanger, a blower fan, and an air outlet are vertically rotatable inside an indoor unit. And a plurality of wind direction left and right blades pivotally supported in the vicinity of the air outlet so as to be rotatable in the left and right direction and horizontally changing the wind direction. The upper and lower blades are divided horizontally into three parts,
In the air conditioner having remote control position detecting means for detecting the position of the remote control, the angles of the plurality of wind direction left and right blades are set to positions where the outgoing wind direction is outward with respect to the remote control position, and The room where the machine is installed is divided into three areas by the angle from the front of the indoor unit,
The angle of the three divided wind improvement lower blades is
The angle of the lower wind enhancement blade corresponding to the area where the remote controller is located is set to be larger than the angles of the other two wind enhancement lower blades, with the vertical downward being 90 degrees.

With this configuration, the indoor environment can be uniformly controlled without giving the occupants a feeling of discomfort.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 the line II. 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. 25 is an indoor unit main body. The air introduced from the air suction port 2 by the blower fan 4 is sent out from the air outlet 8 through the blower path 7 formed by the stabilizer 6 and the rear guider 5. In the vicinity of the air outlet 8, a plurality of wind direction left and right blades 20 are rotatably supported in the left and right directions to change the flow of the wind in the left and right directions. These wind direction left and right blades 20 are rotationally driven by a stepping motor or the like. The air outlet 8 is provided with the wind improving lower blade 1.
9 is rotatably supported in the vertical direction, and changes the flow of the wind in the vertical direction. The wind improvement lower blade is 3
It is divided into a central wind improving lower blade (central wind improving lower blade) 19a and left and right wind improving lower blades (left wind improving lower blade, right wind improving lower blade) 19b, 19c. The central wind improving lower blade 19a, the left wind improving lower blade 19b, and the right wind improving lower blade 19c rotate independently. These are driven by, for example, a stepping motor.

FIG. 3 is a schematic diagram showing the arrangement of the wind direction left and right blades 20. As shown in FIG. The left and right wind direction blades 20 are disposed on both sides of the center of the air outlet 8 and are connected by a connecting bar 23 so as to interlock with each section.

Further, as shown in FIG. 4, the air conditioner of the present invention has a remote control position detecting means 26 inside an indoor unit 25.
The room in which the indoor unit 25 is installed is divided into three regions of left, center, and right according to the angle from the front position of the indoor unit, and the position of the remote controller is detected.

In the wind direction control method of the present invention, the position of the remote controller 27 is assumed to be the space where the occupant is.
In order to detect the position of the remote controller 27 and control the air flow from the air outlet 8 to the remote controller 27 as much as possible, and to air-condition the entire room, the angles of the wind direction left and right blades 20 are changed to the remote control position. The angle of the wind improvement lower blades 19a, 19b, and 19c is set to 0 degree horizontally and 90 degrees vertically downward, and the angle of the wind improvement lower blades corresponding to the area where the remote controller 27 is located is set. The angle is set so as to be larger than the angles of the other two wind improvement lower blades. By controlling the wind direction blade at such an angle, the indoor environment can be uniformly controlled without impairing the comfort.

First, the case where the heating operation is performed will be described. Here, it is assumed that the remote controller 27 is located in the central area. When performing the heating operation, as shown in FIGS. 5A and 5B, the wind direction left and right blades 20 are set to an outward angle (for example, about 15 degrees outward) with respect to the remote control position, and are set to the remote control position. The angle of the corresponding central wind improving lower blade 19a is set to be 30 degrees or more and 80 degrees or less, and the angle of the central wind improving lower blade 19a is set to be 5 degrees or more larger than the angles of the left and right wind improving lower blades 19b and 19c.

FIG. 6 is a schematic diagram showing the blowout flow obtained by setting the angle of the wind direction blade. The main flow of the blowing flow is about 90
° spread. The lower left and right wind improving lower blades 19b and 19c of the central wind improving lower blade 19a and the lower left and right wind improving lower blade 19
The blow-off flow passing through b and 19c becomes an underflow and further spreads about 40 degrees left and right. Therefore, the underflow can widen the divergence angle of the blowing flow to the left and right to about 130 degrees. Left and right wind improving lower blade 1 of central wind improving lower blade 19a
Lower blades 19b, 19 near 9b, 19c and left and right wind
The reason why the blowout flow spreads right and left when passing through the lower right wind improving lower blades 19b and 19c of the central wind improving lower blade 19a is as follows.
This is because the airflow flowing along the lower surfaces of the b and 19c is attracted outward by the attraction action.

As schematically shown in FIG. 7, the blowout flow (main flow) from the central portion of the indoor unit 25 is directed toward the floor in the same manner as in the conventional wind direction control method, and is blown out from the left and right portions (main flow). The underflow is sent out more in the left-right direction than in the central portion to widen the angle. Therefore, the wide room can be heated substantially uniformly by widening the angle of the blowout flow and reaching the floor surface of the blowout flow.

Next, an example of the wind direction control during the heating operation using the wind direction control method of the present invention will be described. FIG.
FIG. 3 is a block diagram illustrating a control system that performs wind direction control. The control unit 35 includes a wind direction setting input unit 30, an indoor temperature setting input unit 32, an indoor temperature detecting unit 33, an indoor pipe temperature detecting unit 34, a remote control position detecting unit 26, and a central wind direction using a stepping motor as a driving source. Upper and lower blade angle changing means 36, left wind improving lower blade angle changing means 37,
The right wind improving lower blade angle changing means 38 and the wind direction left / right blade angle changing means 40 are electrically connected.

FIG. 9 is a flowchart showing the wind direction control by the control unit 35 during the heating operation. User settings,
Depending on the room temperature or the like, the "wide drive" for driving the central wind improving lower blade 19a and the left and right wind improving lower blades 19b and 19c stepwise to send out a wide-angle blowout flow, or the central wind improving lower blade 19a and the left and right wind improving lower blade 19b are performed. , 19c to be driven at the same angle. First,
In step S1, the input value of the wind direction setting, the input value of the room temperature setting (tr
0) is updated. The wind direction setting is for setting the direction of the blowout flow desired by the user, and is divided into "automatic" and "manual".

Next, in step S2, if the wind direction setting is not "automatic", the process proceeds to step S6 to perform normal driving, while if the wind direction setting is "automatic",
Move to step S3.

Next, in step S3, the room temperature t
After detecting r (° C.), the process proceeds to step S4, where 5 is calculated based on the difference between the room temperature tr and the room temperature setting input value tr0.
It is determined whether (tr−tr0)> − 2.0 (° C.) holds continuously for minutes, and if it does not hold, the process proceeds to step S6 to perform the normal drive, whereas if it does, the process proceeds to step S5. To perform wide drive.

In step S4, it is determined whether or not the room temperature is stable, and the wide drive is not performed until the room temperature is stabilized. This is because, in the wide drive, the amount of air blown is limited, and the heating capacity of the air conditioner is reduced, so that if the wide drive is performed before the indoor temperature is stabilized, the indoor temperature near the lower portion of the air outlet 8 will not easily rise. .

Next, the case of performing the dehumidifying operation will be described. When performing dehumidification, as described above, it is desirable not to give the resident a sense of airflow so that the resident in the room does not feel chilly. Further, even if there is no convection of air due to the blowing flow, the indoor humidity is made uniform by the diffusion phenomenon of moisture. Therefore, at the time of dehumidification, it is desirable that the blowout flow is close to a non-airflow. However, if the air outlet is simply closed by the wind direction left and right blades and the wind improvement lower blade in order to make the blowout flow airless, dew condensation occurs on the wind improvement lower blades and the like, and turbulent noise (buzziness sound) generated by the blower fan. There is a problem that occurs.

Therefore, in the present invention, the wind direction vanes are set at the following angles. First, the wind direction left and right blades 20
As shown in FIG. 10A, an outward angle (for example, about 40 degrees outward) with respect to the remote control position is set so as to reduce the blowing flow toward the remote control position. Here, it is assumed that the remote controller 27 is in the left area. Wind improvement lower blade 1
9a, 19b and 19c, as shown in FIGS. 10 (b) and (c), the angle of the left wind improving lower blade 19b is set so that the blowing direction is almost directly downward (140 degrees). On the other hand, the angle of the center and right wind improving lower blades 19a and 19c is set to 0 ° or less, and the blowout flow is released from the center and the right part of the air outlet 8 substantially horizontally or upward. By setting such wind direction blades,
The airflow toward the occupants can be almost eliminated without causing the problem of condensation or turbulent noise.

[0029]

The present invention has the following effects because it is configured as described above.

According to the wind direction control method of the present invention, the angle of the plurality of wind direction left and right blades is set to a position where the transmitted wind direction is outward with respect to the remote control position, and the room in which the indoor unit is installed is set. The angle of the wind-improving lower blade corresponding to the area where the remote controller is located is smaller than the angle of the other two wind-improving lower blades, of the three divided wind-improving lower blades, based on the angle from the indoor unit front position. Is set to be large, so that the indoor environment can be uniformly controlled without giving the occupants a feeling of discomfort.

[Brief description of the 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 cross-sectional view of the air conditioner shown in FIG.

FIG. 3 is a schematic diagram showing an arrangement of left and right wind direction blades of the air conditioner according to the wind direction control method of the present invention.

FIG. 4 is a schematic view showing remote control position detection in the wind direction control method of the present invention.

FIG. 5A is a schematic diagram showing the setting of the angle of the wind direction left and right blades during heating in the same wind direction control method, and FIG. 5B is a schematic diagram showing the angle setting of the wind enhancement lower blade during heating in the same wind direction control method.

FIG. 6 is a schematic diagram showing a state of a blowing flow during heating.

FIG. 7 is a schematic diagram showing a state of a blowing flow during heating.

FIG. 8 is a block diagram showing a control system of wind direction control in 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. 10A is a schematic diagram illustrating the setting of the angle of the wind direction left and right blades when dehumidification is performed by the wind direction control method of the present invention. FIG. 10B is a schematic diagram illustrating the wind improvement when dehumidification is performed by the wind direction control method of the present invention. FIG. 4C is a schematic diagram illustrating the setting of the angle of the blade. FIG. 6C is a schematic diagram illustrating the setting of the angle of the wind-enhancing lower blade when dehumidification is performed by the wind direction control method of the present invention.

FIG. 11 is a sectional view showing an air conditioner according to a conventional wind direction control method.

FIG. 12A is a schematic view showing angle settings of a wind direction left and right blade and a wind improvement lower blade according to a conventional wind direction control method.

FIG. 13 is a schematic view showing a state of a blow-off flow by a conventional wind direction control method.

FIG. 14 is a schematic view showing a state of a blow-off flow according to a conventional wind direction control method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front cover 2 air inlet 3 indoor heat exchanger 4 blower fan 5 rear guider 6 stabilizer 7 blower path 8 air outlet 19a central wind improving lower blade 19b left wind improving lower blade 19c right wind improving lower blade 20 wind direction left and right blade 25 indoor unit 26 remote control Position detecting means 27 Remote control

Claims (1)

[Claims] An indoor heat exchanger, a blower fan, and an air outlet are rotatably supported in the indoor unit so as to be vertically rotatable,
A wind-enhancing lower blade that changes the wind direction in a vertical direction; and a plurality of wind-direction left and right blades that are rotatably supported in the vicinity of an air outlet so as to be rotatable in the left-right direction and change the wind direction in a horizontal direction. In the air conditioner having remote control position detecting means for detecting the position of the remote control, the angles of the plurality of wind direction left and right blades are set to positions where the transmitted wind direction is outward with respect to the remote control position. In addition, the room in which the indoor unit is installed is divided into three regions according to the angle from the front of the indoor unit, and the angle of the three divided wind improving lower blades is set to 0 degree horizontally and 90 degrees vertically downward. The wind direction control method of the air conditioner, wherein the angle of the wind-enhancing lower blade corresponding to the region where the wind-enhancing lower blade is located is larger than the angles of the other two wind-enhancing lower blades.