JP6956353B2 - Indoor air conditioning system - Google Patents

Description

The present invention relates to an indoor air-conditioning system, and more particularly to an indoor air-conditioning system that air-conditions a room while detecting a person with a motion sensor.

Conventionally, for example, the control unit executes a person detection operation function that adjusts the air blowing direction by the wind direction switching blade when the infrared sensor detects a person, and the control unit executes the person detection operation function. At that time, there is disclosed an air conditioner that prohibits the air blowing direction from becoming a predetermined direction and releases the wind direction restriction when the person detection operation function is stopped (for example, Patent Document 1). reference).

Japanese Unexamined Patent Publication No. 2009-156529

In the above-mentioned conventional technique, when the person detection operation function is performed by the infrared sensor, the swing range by the wind direction switching blade is limited and the direction of the blown air is adjusted.
Therefore, although it is possible to prevent erroneous detection of a person by the infrared sensor, since the swing range by the wind direction switching blade is regulated, there is a possibility that the ventilation control over the entire room cannot be properly performed.
The present invention has been made in view of the above points, and an object of the present invention is to provide an indoor air-conditioning system capable of preventing false detection by a motion sensor and appropriately controlling ventilation in a room. Is to be.

In order to achieve the above object, the indoor air conditioning system according to the present invention includes an indoor unit provided in the room and a control unit for controlling the indoor unit, and the indoor unit has an air outlet and an air outlet. It is provided with a flap that is rotatably provided and can change the wind direction angle in the vertical direction, and a motion sensor that detects the presence or absence of a person in the room. Positioned, the control unit acquires a detection result by the motion sensor and controls the swing operation of the flap, and the control unit has the flap at the top when the flap is swinging. It is characterized in that control is performed by the flap interlocking mode for acquiring the detection result by the motion sensor only when the position and the lowest position are located.

According to this, since the detection result by the motion sensor is acquired only when the flap is located at the uppermost position and the lowest position, the operation of the flap does not become a disturbance at the time of detection by the motion sensor. , It is possible to prevent erroneous detection by the motion sensor.

According to the present invention, the operation of the flap does not become a disturbance at the time of detection by the motion sensor, and erroneous detection by the motion sensor can be prevented. As a result, the flap can be swung to the maximum while preventing erroneous detection of the motion sensor, and proper ventilation control in the room can be performed.

Front view showing an embodiment of an indoor unit of an indoor air conditioning system according to the present invention. Enlarged view of the indoor unit of this embodiment Block diagram showing the control configuration of this embodiment Explanatory drawing showing the relationship between the motion sensor and the flap in this embodiment. Graph showing the waveform of the detection result by the motion sensor Flow chart showing the operation of this embodiment

The first invention includes an indoor unit provided in a room and a control unit for controlling the indoor unit, and the indoor unit is rotatably provided at an air outlet and the air outlet and has a vertical wind direction angle. A flap capable of changing the above speed and a motion sensor for detecting the presence or absence of a person in the room are provided. The detection result is acquired by the sensor, and the swing operation control of the flap is performed. When the flap is swinging, the control unit is in the uppermost position and the lowest position. Only in the case, the control is performed by the flap interlocking mode for acquiring the detection result by the motion sensor.
According to this, since the detection result by the motion sensor is acquired only when the flap is located at the uppermost position and the lowest position, the operation of the flap does not become a disturbance at the time of detection by the motion sensor. , It is possible to prevent erroneous detection by the motion sensor. As a result, the flap can be swung to the maximum while preventing erroneous detection of the motion sensor, and proper ventilation control in the room can be performed.

According to the second aspect of the present invention, when the control unit performs control by the flap interlocking mode, the flap is controlled to pause when the flap is located at the uppermost position and the lowermost position, and the flap is stopped. After stopping the above, the detection result by the motion sensor is acquired after a predetermined time.
According to this, when the flaps are in the uppermost position and the lowest position, the detection result by the motion sensor is acquired after a predetermined time after the flaps are paused. Therefore, when the flaps are detected by the motion sensor, the flaps are detected. The operation of the above does not become a disturbance, and it is possible to prevent erroneous detection by the motion sensor.

In the third invention, the time for suspending the flap is the time until the waveform of the detection signal by the motion sensor is stabilized by stopping the flap, and the detection signal can be acquired by the motion sensor. It is the total time with the time.
According to this, after the waveform of the detection signal by the motion sensor is stabilized by stopping the flap, the detection signal by the motion sensor can be acquired, and the detection signal by the stable motion sensor can be acquired.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of an indoor unit of an indoor air conditioning system according to the present invention. FIG. 2 is an enlarged view of the indoor unit.

As shown in FIGS. 1 and 2, the indoor air conditioning system includes an indoor unit 10 installed on a wall surface or the like in the room. The indoor unit 10 includes a box-shaped housing 11, and an indoor heat exchanger (not shown), an indoor fan, and a fan motor are housed inside the housing 11.
An outlet 12 for blowing out air after heat exchange by an indoor heat exchanger into the room is provided below the front surface of the housing 11. The outlet 12 is provided with a flap 13 for adjusting the direction of air blown from the outlet 12, and the flap 13 is provided so as to be swingable in the vertical direction while being supported at both ends.

An outdoor unit (not shown) is connected to the indoor unit 10 via a refrigerant pipe. Although not shown, the outdoor unit houses members that make up a refrigerant circuit, such as a compressor, a four-way valve, and an outdoor heat exchanger.
Then, for example, in the case of cooling operation, by driving the compressor, the high-temperature and high-pressure gas refrigerant discharged from the compressor flows into the outdoor heat exchanger, exchanges heat with the outdoor air, and is condensed and liquefied. do. The liquefied refrigerant is decompressed to a predetermined low voltage by an expansion valve or the like, and heats are exchanged with the indoor air by an indoor heat exchanger to evaporate. Then, the indoor air cooled by the evaporation of the refrigerant is blown into the room by the indoor fan to cool the room. Further, the refrigerant evaporated and vaporized in the indoor heat exchanger is returned to the compressor of the outdoor unit through the refrigerant pipe.

Further, a motion sensor 15 is arranged on one side of the outlet 12 arranged below the front surface of the housing 11. The motion sensor 15 is composed of, for example, an infrared sensor or the like, and is configured to be able to detect whether or not a person is present in the room.

Next, the control configuration in this embodiment will be described.
FIG. 3 is a block diagram showing a control configuration of the present embodiment. FIG. 4 is an explanatory diagram showing the relationship between the motion sensor 15 and the flap in the present embodiment.
As shown in FIG. 3, in the present embodiment, for example, a control unit 20 including a CPU, a memory, and the like and operated based on a predetermined program is provided, and the control unit 20 constitutes each of the indoor units 10. It is configured to control the operation of the device.
Further, the control unit 20 inputs a detection result such as the presence or absence of a person by the motion sensor 15 and controls the fan motor 21 for driving the indoor fan of the indoor unit 10 and the flap drive motor 22 for driving the flap 13. It is configured.

Further, the control unit 20 is configured to determine whether or not a person is present in the room according to the detection result of the motion sensor 15 of the room unit 10.
Here, in the present embodiment, the control unit 20 is configured so that it can be controlled by the flap interlocking mode.
The flap interlocking mode controls the timing of using the detection result of the motion sensor 15 when the flap 13 is swinging.

As shown by the alternate long and short dash line in FIG. 4, the flap 13 swings. Therefore, when the flap 13 is swinging, if the motion sensor 15 detects it, the movement of the flap 13 may enter the detection region of the motion sensor 15, as shown in FIG.
If all the detection results of the motion sensor 15 are used when the flap 13 is swinging in this way, when the flap 13 swinging passes through the detection area of the motion sensor 15, the flap 13 is swinging. , The motion sensor 15 may malfunction.

Therefore, in the present embodiment, when the control unit 20 is controlled by the flap interlocking mode, the human feeling is felt only when the flap 13 is swing-controlled and the flap 13 is located at the uppermost position and the lowest position. It is configured to acquire the detection result by the sensor 15.
Specifically, the control unit 20 controls the flap drive motor 22 to stop and control the flap drive motor 22 when the flap 13 is located at the uppermost position or the lowest position, and temporarily stops the flap 13. Stop it. Then, the control unit 20 is configured to acquire the detection result by the motion sensor 15 when the flap 13 is temporarily stopped.

In the present embodiment, the time for suspending the flap 13 is the time until the waveform of the detection signal by the motion sensor 15 stabilizes due to the stop of the flap 13, and the detection signal can be acquired by the motion sensor 15. It is set to the total time with the time.

FIG. 5 is a graph showing the waveform of the detection result by the motion sensor 15.
As shown in FIG. 5, it is known that it takes time for the waveform of the detection signal by the motion sensor 15 to stabilize after the flap 13 is stopped. Therefore, if the detection result of the motion sensor 15 is acquired while the waveform of the detection signal by the motion sensor 15 is not stable, a person may be erroneously detected.
Specifically, although it depends on the sensitivity and performance of the motion sensor 15, in the present embodiment, the time until the waveform of the detection signal by the motion sensor 15 stabilizes due to the stop of the flap 13 is 2 seconds. The time during which the detection signal can be acquired by the motion sensor 15 is set to 2 seconds.

The flap interlocking mode is a control performed only when the flap 13 is swinging. Therefore, when the flap 13 is fixed at an arbitrary position, control by the flap interlocking mode is not performed, all the detection signals by the motion sensor 15 are acquired by the control unit 20, and a person in the room is monitored. Will be.
Further, in the energy saving mode, the control unit 20 detects a person in the room by the motion sensor 15 and automatically controls the operation of the flap 13 and the drive of the fan drive motor in response to the presence of the person. It is configured to control by the flap interlocking mode. That is, when the control in the energy saving mode is not performed, the control in the flap interlocking mode is not performed.

Next, the operation of the present embodiment will be described with reference to the flowchart shown in FIG.
In the present embodiment, first, the control unit 20 determines whether or not the energy saving mode is selected (ST1), and if the energy saving mode is not set, the motion sensor 15 is stopped (ST2). ..
When the energy saving mode is set (ST1: YES), the control unit 20 determines whether or not the flap 13 is swing-set (ST3), and when the swing is set, the control unit 20 determines. Controls by the flap interlocking mode (ST5). When the swing is not set (ST3: NO), the control unit 20 constantly detects a person by the motion sensor 15 (ST4).

When the flap interlocking mode is started, the control unit 20 drives the flap drive motor 22 to start the swing operation of the flap 13 (ST6), and when the flap moves to the uppermost position or the lowest position, the flap drive motor 22 is stopped and controlled to stop the flap 13 (ST7). At this time, while driving the flap 13, the control unit 20 discards the detection signal by the motion sensor 15 (ST8).
Then, when a predetermined time (2 seconds) has elapsed after the flap 13 is stopped (ST7: YES) (ST9: YES), the detection signal by the motion sensor 15 is acquired (ST10). At this time, after the flap 13 is stopped, the control unit 20 discards the detection signal by the motion sensor 15 (ST11) until a predetermined time (2 seconds) elapses (ST9: NO).

When a predetermined time (2 seconds) has elapsed from the start of acquisition of the detection signal by the motion sensor 15 (ST12: YES), the control unit 20 determines that the detection by the motion sensor 15 has been completed (ST12: YES). ST13), the flap drive motor 22 is driven to start the swing operation of the flap 13 (ST14).
After that, the control unit 20 controls so that the above-mentioned operation is repeated from the swing start (ST6) of the flap 13.

As described above, in the present embodiment, the control unit 20 acquires the detection result by the motion sensor 15 and controls the swing operation of the flap 13, and the control unit 20 swings the flap 13. If so, control is performed in the flap interlocking mode for acquiring the detection result by the motion sensor 15 only when the flap 13 is located at the uppermost position and the lowest position.
As a result, the detection result by the motion sensor 15 is acquired only when the flap 13 is located at the uppermost position and the lowest position. Therefore, when the flap 13 is detected by the motion sensor 15, the operation of the flap 13 is disturbed. However, it is possible to prevent erroneous detection by the motion sensor 15. As a result, the flap 13 can be swung to the maximum while preventing erroneous detection of the motion sensor 15, and proper ventilation control in the room can be performed.

Further, in the present embodiment, when the control unit 20 controls by the flap interlocking mode, the control unit 20 controls so that the flap 13 is temporarily stopped when the flap 13 is located at the uppermost position and the lowest position, and the flap 13 is temporarily stopped. After the 13 is stopped, the detection result by the motion sensor 15 is acquired after a predetermined time.
As a result, when the flap 13 is located at the uppermost position and the lowest position, the detection result by the motion sensor 15 is acquired after a predetermined time after the flap 13 is temporarily stopped. Therefore, when the flap 13 is detected by the motion sensor 15. , The operation of the flap 13 does not become a disturbance, and erroneous detection by the motion sensor 15 can be prevented.

Further, in the present embodiment, the time for suspending the flap 13 is the time until the waveform of the detection signal by the motion sensor 15 stabilizes due to the stop of the flap 13, and the detection signal is acquired by the motion sensor 15. It is the total time of the time that can be done.
As a result, after the waveform of the detection signal by the motion sensor 15 is stabilized by stopping the flap, the detection signal by the motion sensor 15 can be acquired, and the detection signal by the stable motion sensor 15 can be acquired. ..

As described above, according to the present invention, it is possible to prevent erroneous detection by the motion sensor and to appropriately control the ventilation in the room, so that it is suitable as an indoor air conditioning system equipped with a motion sensor. be.

10 Indoor unit 11 Housing 12 Outlet 13 Flap 15 Motion sensor 20 Control unit 21 Fan motor 22 Flap drive motor

Claims (3)

It is provided with an indoor unit provided in the room and a control unit for controlling the indoor unit.
The indoor unit includes an air outlet, a flap that is rotatably provided at the air outlet and can change the wind direction angle in the vertical direction, and a motion sensor that detects the presence or absence of a person in the room.
The swinging flap is located in the detection area of the motion sensor,
The control unit acquires the detection result by the motion sensor and controls the swing motion of the flap.
When the flap is swinging, the control unit is controlled by the flap interlocking mode to acquire the detection result by the motion sensor only when the flap is located at the uppermost position and the lowest position. An indoor air conditioning system characterized by performing. When the control unit performs control in the flap interlocking mode, the control unit controls to suspend the flap when the flap is located at the uppermost position and the lowest position, and after stopping the flap, the control unit is used. The indoor air-conditioning system according to claim 1, wherein the detection result by the motion sensor is acquired after a predetermined time. The time for suspending the flap is the total time of the time until the waveform of the detection signal by the motion sensor stabilizes due to the stop of the flap and the time during which the detection signal can be acquired by the motion sensor. The indoor air conditioning system according to claim 2, wherein the indoor air conditioning system is characterized by the above.

Images