JP2513048B2 - Air conditioner control method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for controlling an air conditioner that provides a comfortable environment in a room, and more specifically, when the amount of air blown into the room is strong, the discomfort caused by blast noise is reduced. The present invention relates to a control method of an air conditioner configured to do so.

[Conventional example] Conventionally, this type of air conditioner control method has, for example, an indoor temperature sensor such as a thermistor or a heat exchanger temperature sensor, and responds to a difference between a set value by a remote controller or the like and a detected value by those sensors. In addition to driving the compressor, the air blower is driven to bring the interior of the room closer to the set value and maintain a comfortable environment.

By the way, as shown in FIG. 5, a blower controller (for example, CPU) 2 and a blower drive circuit 3 are provided inside the main body of the air conditioner for driving the blower 1, and for example, by a remote controller. When "strong air volume", "medium air volume", "weak air volume", or "automatic air volume" is set (manual setting), the blower controller 2 changes a constant phase at regular time intervals according to this setting. The rotation speed of the blower 1 is detected, the rotation speed of the blower 1 is approximated to the value corresponding to the above setting, and the blown air volume is maintained at the set value. That is, when the "strong air volume" is set, the rotation speed of the blower 1 is maximized, the air volume blown out into the room is maximized, and when the "medium air volume" is set, the blown air volume is the same. It is made smaller than in the case of "strong air volume". Further, when the "weak air volume" is set, the blown air volume is made smaller than that of the "medium air volume", and is used, for example, when the resident sleeps. Furthermore, when the "automatic air volume" is set, for example, the blown air volume is changed according to the comparison between the indoor temperature and the set temperature, and the indoor environment is maintained.

[Problems to be Solved by the Invention] By the way, in the control method of the air conditioner, blast noise is generated according to the blown air volume, and "strong",
Since the blowing air amounts in "medium" and "weak" are controlled to be constant, discomfort may occur, and the discomfort may increase with time.

Then, based on the 1 / f fluctuation theory, a method has been proposed in which the fluctuation of the blown-out air volume is changed. That is, recently, it has been discovered that there is 1 / f fluctuation in a comfortable natural wind, etc., and that there is a regularity of 1 / f fluctuation in the human body. By adapting to, the discomfort caused by the blast noise is alleviated and the indoor environment is made more comfortable.

However, the control method has a function of making a minute change in the rotation speed of the blower 1 based on the 1 / f fluctuation characteristic (hereinafter, referred to as a fluctuation function). If the maximum value of the amplitude is constant during operation of "strong air volume", "medium air volume", "weak air volume", etc., especially when the "blowing air volume" (strong notch) is large, the large blast noise is Fluctuations may be more annoying.

The present invention has been made in view of the above problems, and its purpose is to change the amplitude of fluctuation fluctuations according to the amount of set blown air volume, reduce air blowing noise, and reduce the discomfort. It is to provide a control method of the machine.

[Means for Solving the Problems] In order to achieve the above object, the present invention controls the rotation speed of a blower in accordance with a set blown air volume set by an operation unit, and sets the blown air volume to a plurality of stages. In the control method of the air conditioner to be switched, the rotation speed of the blower is 1 / f
When the fluctuation is caused by the fluctuation characteristic, the amplitude of the fluctuation is relatively changed according to the amount of the set airflow set by the operation unit. For example, the amplitude of the fluctuation is set to a large amount. In this case, it is made smaller, and in contrast, when the set blown air volume is small, it is made large.

[Operation] With the above-described configuration, when the air conditioner is in the "strong wind amount (strong wind notch)" operation, the amplitude of the fluctuation change caused by the rotation speed of the blower is reduced, and conversely, "weak air amount (weak wind Wind notch) ”, the amplitude of the fluctuation change is increased. That is, in "strong air volume" operation, the blowing noise is large, but has a fluctuation variation with a small amplitude, and the fluctuation noise does not make the blowing noise annoying and reduces discomfort. In addition, during "weak air volume" operation, the blast noise is small and has large fluctuation fluctuations. At this time, the blowing air volume also has fluctuation fluctuations, so the blowing volume is made comfortable and uncomfortable. Is reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1 and FIG. 2, the air conditioner control device main body 4 is provided with a heat exchanger 5 and a blower 1, and the indoor air is sucked in through an intake port 6 of the main body 4, and It is made cold or warm at 5 and is blown out from the blower outlet 7 at the blower 1. At this time, the rotation speed of the blower 1 is controlled by the blower controller inside the main body 4, and the blowout amount is determined by this control. As the motor of the blower 1, an induction motor is used for the phase control method, for example, but any motor whose rotational speed can be minutely changed may be used.
Therefore, in addition to the function of the storage unit 9 that stores the pattern data in which the amplitude of the fluctuation change is relatively different and the blower control unit 2 in FIG. Based on this, the blower control unit (microcomputer) 10 that slightly changes the rotation speed of the blower 1 at the rhythm of the 1 / f fluctuation characteristic to add fluctuation to the blowing air volume, and a fluctuation button 11 for issuing an instruction of the fluctuation blowing air volume 11 And are provided. The storage unit 9 stores three types of different fluctuation pattern data, for example, maximum fluctuation fluctuation amplitudes of 100 rpm, 80 rpm, and 60 rpm. In addition, the storage unit 9
May be built in the blower controller 10.

Next, the operation of the ventilation control method applied to the ventilation controller of the air conditioner having the above configuration will be described with reference to the flowchart of FIG.

First, if any of "strong air volume", "medium air volume", "weak air volume", or "automatic air volume" is set by manual setting, the blower control unit 10 causes the blower control unit 10 to set the rotation speed of the blower to the above set value. The value is controlled according to. At this time, the fluctuation button 11
When is operated, the routine shown in FIG. 3 is started, the fluctuation pattern data in the storage unit 11 is read out by the blower control unit 10, and control is performed to change the number of revolutions of the blower 1 in fluctuation.

Then, as shown in the above table, the pattern data of the fluctuation change of the maximum amplitude value according to the air volume setting is read, but it is determined whether the set air volume is a "strong" notch (step ST1). , If the notch is a “strong” notch, fluctuation change pattern data with a maximum amplitude value of 60 rpm is read out, and processing for adding a fluctuation change with a maximum amplitude of 60 rpm to the amount of strong air to be blown is executed (step ST2). In this process, the rotation speed of the blower 1 is controlled with a rhythm having a 1 / f fluctuation characteristic with a maximum amplitude value of 60 rpm (for example, shown in FIG. 4). In this case, since the maximum amplitude value of the fluctuation change is small, the blast noise is less affected by the fluctuation change, that is, the large fluctuation of the blast noise is suppressed from being further offensive to the ears and the discomfort caused by the fluctuation change is reduced. become. Further, since the blowing air volume is “strong”, the effect of the fluctuation blowing air volume is sufficiently exhibited even if the maximum amplitude value of fluctuation fluctuation is small.

Next, if the air volume setting is not the "strong" notch, it is determined whether the set air volume is the "medium" notch (step ST3), and if it is the "medium" notch, the blower control unit 10 determines the maximum amplitude. The fluctuation change pattern data with a value of 80 rpm is read out, and a process of adding a fluctuation change with a maximum amplitude value of 80 rpm to the blown medium air volume is executed (step ST4). In this process, the rotation speed of the blower 1 is controlled with a rhythm having a 1 / f fluctuation characteristic with a maximum amplitude value of 80 rpm (for example, as shown in the time chart of FIG. Since the maximum amplitude value is an intermediate value, the blast noise is not so sensitive to fluctuation changes.

Subsequently, if the set air volume is not the "strong" or "medium" notch, that is, if it is the "weak" notch, the maximum amplitude value is 100 rpm.
Fluctuation change pattern data is read out, and a process of adding a fluctuation change with a maximum amplitude value of 100 rpm to the weak air volume to be blown is executed (step ST5). In this process, the rotation speed of the blower 1 is controlled in a rhythm having a 1 / f fluctuation characteristic with a maximum amplitude value of 100 rpm (for example, shown in the time chart of FIG. 4). In this case, the maximum amplitude value of the fluctuation change is large and the blast noise is affected by the fluctuation change. However, since the blast noise is small, the fluctuation change of the blast noise becomes comfortable.

Further, when the notch is “automatic”, when the fluctuation button 11 is operated, fluctuations are added to the blown air volume in the same manner as above.

In the above embodiment, the set air volume is “strong” notch,
There are three types of fluctuation change pattern data due to the "medium" nonch and "weak" notches, but the data may be increased or decreased according to the type of the notch, and the maximum amplitude value of the fluctuation change is shown in the table above. It does not need to be limited to the value of.

[Effects of the Invention] As described above, according to the control method for an air conditioner of the present invention, the maximum amplitude value of the fluctuation change added to the blown air amount differs according to the set air flow amount, and the larger the air flow amount, the greater the air flow amount. Since the maximum airflow value has a small fluctuation change in the blowing air volume, the fluctuation in the blowing air volume can reduce the discomfort in the room, especially in the case of the "strong" notch. Further, it is possible to prevent the large blast noise from further annoying due to the fluctuation change, reduce the discomfort caused by the blast noise change, and keep the room comfortable.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a schematic block diagram of a blower controller to which a control method for an air conditioner is applied.
FIG. 1 is a schematic side sectional view of the air conditioner body, FIGS. 3 and 4 are flow charts and time charts for explaining the air blowing control method, and FIG. 5 is a conventional air conditioner control method. It is a schematic block diagram of the ventilation controller to which is applied. In the figure, 1 is a blower, 3 blower drive circuit, 4 is a control device body of an air conditioner, 5 is a heat exchanger, 6 is an inlet, 7 is an outlet, 8 is a blow controller, 9 is a storage unit, 10 Is the blower controller,
11 is a fluctuation button.

Claims (3)

(57) [Claims] 1. A control method for an air conditioner, which controls the number of revolutions of a blower according to a set blown air volume set by an operation unit and switches the blown air volume blown into a room into a plurality of stages.
When the fluctuation of the rotation speed of the blower is caused by the 1 / f fluctuation characteristic, the amplitude of the fluctuation is relatively changed according to the amount of the set blown air volume set by the operation unit. A method for controlling an air conditioner, characterized by: 2. A fluctuation setting means for issuing the fluctuation change instruction, a storage means for storing a plurality of fluctuation change pattern data of different amplitudes, and a rotation speed of the blower according to the fluctuation change pattern data. Control means, and when fluctuation is set by the fluctuation setting means, fluctuation change pattern data corresponding to the set blown air volume is read from the storage means, and the rotational speed is minutely changed according to the pattern data. The method for controlling an air conditioner according to item (1). 3. The amplitude of fluctuation change given to the number of revolutions of the blower is reduced when the set blown air volume is large,
The method for controlling an air conditioner according to claim 1 or 2, wherein the set blown air volume is increased when it is small.