KR100213767B1 - Ability improve airconditioning method of airconditioner - Google Patents

Abstract

The present invention relates to a method for improving air conditioning efficiency, and to improve the learning effect and work efficiency by increasing the awakening level by controlling the air volume by the cross flow fan and the up and down wind louvers.

The object of the present invention as described above is that the amount of cooling air discharged from the air conditioner is controlled by the rotation speed of the motor for rotating the cross flow fan, and the wind direction of the cooling air discharged in this rotation speed control step is The upper and lower wind direction adjustment step of adjusting the up and down direction by a stepping motor for operating the up and down wind louver, and the control step to increase the arousal level by controlling the rotation speed control step and the up and down wind direction adjustment step to achieve the above object. To make it possible.

Description

Air Conditioning Efficiency Improvement

Figure 1 is a conventional air conditioner, Figure 1a is a perspective view of the air conditioner, Figure 1b is a side cross-sectional view of the air conditioner.

2 is a block diagram of air flow rate and wind direction of the air conditioner of the present invention.

3 is a rotational-time control waveform diagram of a cross flow fan of the present invention.

4 is a vertical wind direction louver of the present invention, Figure 4a is a position-time control waveform of the vertical wind direction louver, Figure 4b is a deformation position of the vertical wind direction louver.

5 is a layout view of a warm environment test room of the air conditioner of the present invention.

6 is an attached position of the sensor for measuring brain waves of the present invention.

7 is a protocol waveform diagram used in the experiment of the present invention.

8 is a result of CNV (accompanied negative fluctuation) experiment by S.Torri's fragrance stimulation.

9 is an analysis process of the electroencephalogram data of the present invention.

* Explanation of symbols for main parts of the drawings

101: cross flow fan 102: motor

103: motor control unit 104: up and down wind direction louver

105: stepping motor 106: stepping motor control unit

107: Efficiency improvement operation mode 108: External chamber

109: internal chamber 110: RAC indoor

111: RAC outdoor unit 112: EEG sensor

113: EEG measuring instrument 114: A / D board

115: electroencephalogram PC 116: visual signal generator

117: voice signal generator 118: signal response keyboard

The present invention relates to an air conditioner, and in particular, an air conditioner for improving the learning effect and work efficiency by increasing the awakening level (brain activity level) by controlling the wind direction by a cross flow fan and a vertical wind direction louver. It is about air conditioning method of improving efficiency.

The conventional air conditioner and its periphery have a heat exchanger (1) in which cold refrigerant circulates so that the hot air in the room exchanges heat as shown in FIG. 1, and air cooled by the heat exchanger (1). By the cross flow fan 2 for discharging to the lower portion of the cross section, the left and right wind louvers 3 for adjusting the direction of cooling air discharged by the cross flow fan 2 from side to side, and the cross flow fan 2. Up and down wind direction louvers (4) for adjusting the direction of the discharged cooling air up and down.

The operation of the conventional air conditioner having such a configuration and the following problems will be described below.

As shown in FIG. 1, the heat exchanger 1 through which cold refrigerant circulates and the hot air in the room where heat exchange has been formed are cold air and then discharged to the outside of the air conditioner by the rotation of the cross flow fan 2. It is done.

The amount of cooling air discharged from the air conditioner according to the rotation speed (rpm) of the cross flow fan 2 is controlled by the strong wind, the middle wind, and the weak wind, and the amount of cooling air discharged by the cross flow fan 2 is increased. The direction is adjusted left and right by the left and right wind direction louvers 3 and up and down by the up and down wind direction louvers 4.

The up-and-down wind direction louver 4 performs a rhythm operation or an auto-swing operation by a stepping motor, and the air volume control and the wind direction control are operated separately even if the air volume and the wind direction are changed.

However, such a conventional air conditioner adjusts the amount of cooling air discharged from the air conditioner to the number of revolutions of the cross flow fan according to the preference of the consumer, and the direction of the cooling air discharged from the air conditioner is autoswing at a constant cycle. By operating the up-down wind louver to operate the rhythm slightly irregularly, it provides a feeling of airflow to the consumer to feel a simple coolness.

Therefore, in the present invention, the amount of cooling air discharged from the air conditioner is controlled by the rotational speed of the motor for rotating the cross flow fan, and the wind direction of the cooling air discharged by the rotational speed control is the up and down wind direction louver. Up and down wind direction control step of controlling up and down by the stamping motor to operate the motor, and the rotation speed control and up and down wind direction control step change the position of the rotation speed and the up and down wind louver at the same moment in a certain period in time. The control step is to increase the arousal level by controlling the flow rate by the crow flow fan and the wind direction by the up-down wind louver to increase the awakening level, thereby improving the learning effect and work efficiency.

The configuration of the air conditioner and its peripheral portion of the present invention is a cross-flow fan for discharging the air cooled by the heat exchanger through which the cold refrigerant circulates so that the hot air in the room heat exchanges as shown in FIGS. 101, the motor 102 for rotating the cross flow fan 101, the motor controller 103 for controlling the rotation speed of the motor 102, and the cross flow fan 101 are discharged. Controls the up and down wind direction louver 104 to adjust the direction of the cooling air up and down, the stepping motor 105 is driven to adjust the up and down wind direction 104 in the up and down direction, and the driving of the stamping motor 105 The stamping motor control unit 106, the motor control unit 103 and the stamping motor control unit 106 is configured to improve the efficiency of the operation mode 107 is selected to be controlled in accordance with the flow rate and the wind direction.

In addition, as shown in FIG. 5, the outer chamber 108, which is the exterior of the warm environment test room in which the outdoor temperature / humidity is controlled, the RAC outdoor unit 111 installed in the outer chamber 108, and the RAC in the outer chamber 108 An inner chamber 109 having an indoor unit 110 mounted to the front, an electroencephalogram 113 installed in the outer chamber 108 to measure brain waves, and a head portion of the test subject connected to the electroencephalogram 113 EEG measurement sensor 112 attached to the A / D board 114 for converting the analog signal measured by the EEG measuring instrument 113 into a digital signal, and the A / D board 114 is changed into a digital signal PCE 115 for storing EEG measurement data, a voice signal generating device 117 for giving a voice signal as the first stimulus signal to the test subject, and a voice signal from the voice signal generating device 117 A time signal generator 116 showing a time signal 1.8 seconds after the sound A signal response keyboard 118 is formed so that the test subject responds to the visual signal shown by each signal generator 116.

The operation and effects of the present invention configured as described above will be described in detail with reference to FIGS. 2 to 9. The cold air formed by heat exchange with a heat exchanger in which indoor hot air flows into the air conditioner through which cold refrigerant circulates is discharged to the outside of the air conditioner by the cross pull fan 101. As shown in FIG. 2, when the efficiency improvement operation mode (awake operation mode 107) is selected, the up-down wind direction louver 104 which controls the direction of the cooling air discharged to the outside of the air conditioner is connected to the stepping motor 105. The wind direction control of the up-and-down wind direction louver 104 is performed by the stepping motor control unit 106 that controls the stepping motor 105, as shown in FIG. 4B. a), located in position 2 (b), position 3 (c), the position of the up-and-down wind louver 104 is controlled according to time. In addition, when the efficiency improvement operation mode 107 is selected, the cooling air discharged to the outside of the air conditioner by the cross flow fan 101 is set at the rotational speed (rpm) of the motor 102 which rotates the cross flow fan 101. The air volume is adjusted by the motor control unit 103 for controlling the rotational speed of the motor 102, the rotational speed is changed to strong, medium, or weak, the rotational speed according to time as shown in FIG. Controlled. At this time, when the rotational speed of the motor 102 is driven in a strong direction, the up and down wind direction louver 104 is controlled to be positioned at position 3 (c), and when the rotational speed is operated at the middle, the up and down wind volume louver 104 is operated at position 2 (b). ) And the up and down wind direction louver 104 is controlled to be positioned at position 1 (a) when the rotational speed is about. Linking the rotational speed control step and the up-down wind direction control step is in progress until the rotational speed (rpm) in FIG. 3 becomes two minutes from the start, and the up-and-down wind louver 104 is in the second (b) of FIG. 4b. It is located, and the rotation speed is about 5 minutes, and the louver position No. 1 (a), and up to 7 minutes is the louver position (b), which means that the rotation speed and the wind direction are set together. .

Controlling the position of the up-and-down wind louver 104 is to prevent the cooling air is delivered directly to the consumer so that the consumer feels comfortable and improves the efficiency.

As described above, the upper and lower wind direction louvers 104 are positioned at the upper position of position 3 (c) when the wind is strong, and the cooling air is discharged to the upper part of the room. It is placed in the middle position of 2 (b) so that the consumer feels a certain air flow, and in the case of a mild wind, the up and down wind louver 104 is placed at the lower position of position 1 (a) and controlled to be discharged to the indoor floor. .

The control angle of the up-and-down wind direction louver 104 whose position is adjusted to position 1 (a), position 2 (b), and position 3 (c) is equally spaced, and the angle is 10 to 20 °. 16 ° is the best angle for maximum effect.

The rotation speed-time control waveform of the cross flow fan of FIG. 3 and the position-time control waveform of the up-and-down wind louver of FIG. 4a are repeatedly operated in the same cycle, and the period is 10 to 20 minutes and the maximum is 14 minutes. The effect can be obtained.

The effects caused by controlling the air volume and the wind direction described above are measured through an experiment in a warm environment test room where the outdoor temperature / humidity is controlled as shown in FIG.

The RAC outdoor unit 111 is installed in the outer chamber 108, which is the exterior of the warm environment test chamber, and the front RAC chamber 110 of the inner chamber 109 is installed. Located in the center and facing the front direction of the RAC indoors 110, the electroencephalogram 113 is installed in the outer chamber 108 so as not to interfere with the experiment.

Attach the EEG sensor 112 to detect the EEG on the head of the test subject, and sends the signal detected by the EEG sensor 112 to the EEG measuring instrument 113 connected to the EEG sensor 112 , EEG measuring instrument 113 is sent from the EEG sensor 112 for measuring the EEG as a signal.

The analog signal measured by the EEG measuring instrument 113 is converted into a digital signal by the A / D board 114 to designate data to the EEG measuring PC 115.

The EEG sensor 112 is attached to the subject's scalp by the 10-20 method of international standard, as shown in Figure 6, measuring the same active signal in the sensing method for detecting EEG By attaching directly to the bipolar method and EEG generation part that can remove local noise, it detects the difference between the two signals of the active sensor and the reference sensor attached to the earlobe. There is a monopolar method that can detect the signal.

In this case, the electroencephalography sensor 112 is attached to the attachment position of F _Z , C _Z , and P _Z among the 10-20 methods, and the monopolar method is used to attach a reference sensor to the left earlobe.

At this time, the method for measuring the EEG is to match the temperature / humidity conditions of the inner chamber 109 of the warm environment laboratory, attach the EEG sensor 112 to the attachment position on the scalp of the test subject and the present experiment shown in FIG. The signal given by the protocol developed for the test is given to the test subject, and the EEG for 1.8 seconds is measured and stored.

As shown in FIG. 7, there is CNV (Contingent Negative Variation) as a method of analyzing the characteristics of EEG when the stimulus 1 (voice signal) and the stimulus 2 (visual signal) are presented at regular time intervals. The CNV was proposed by Walter in 1964, and when the subject expected something to happen in the interval between two stimuli, the EEG (Electroencephalogram, a bioelectrical signal from the brain) was slowed down from the baseline. As a result, an upward shift phenomenon is called CNV.

In other words, the degree of arousal can be observed as a protocol for detecting the degree of EEG change while waiting for the visual signal after stimulation of the voice signal.

8 shows the results of CNV experiments by S.Torri's fragrance stimulation (CNV in Perfumery, The psychology and biology of fragrance and the psychological effects of odour, Researchers: S.Torri, H.Fuknda, H. Kanemoto, R. Miyanchi, Y. Y.Hamauzu and M.Kawasaki, publisher: Chapman and Hall, 1988. Jasmine flavor is shifted higher in the baseline than lavender.

This phenomenon means that the amplitude of the EEG is higher when taking jasmine scent, which is a result of research showing that jasmine scent is higher than lavender scent.

Here, using a protocol waveform diagram as shown in FIG. 7 is intended to derive an optimal condition of awakening, or coordination for efficiency, and to stimulate the subject by reducing other external conditions that affect the brain waves as much as possible, such as artifacts. To focus on.

Specifically, the voice signal, which is the first stimulus signal, is shown to the test subject by the voice signal generator 117 of FIG. 5, and then the time signal is shown by the time signal generator 116 of FIG. 5 after 1.8 seconds.

At this time, the visual signal is randomly turned on by the visual signal generator 116 installed in front of the subject, a red or green LED (light emitting diode, LED), so that the test subject correctly corrects the signal response keyboard 118, Work quickly so that you are nervous and focused during the intervals between stimuli.

In this way, by suppressing external influences, the interference is reduced so that the EEG characteristic appears only in the change of air conditioning conditions.

9 is a diagram illustrating a process of analyzing EEG, and repeating the protocol waveform diagram of FIG. 7 to the test subject about 30 to 40 times according to the air conditioning conditions. The EEG measuring signal 113 and the A / D board 114 Data is stored in the EEG measurement PC (115).

The data stored in the brain wave measurement PC 115 is raw data of FIG. 9, and the brain waves affected by noise, such as eye movements and responses, are removed by visual analysis. The averaged data is averaged by about 30 valid data.

Values between 0.35 and 0.65 seconds after the first signal in 1.8 seconds, which is the interval between signals in the average data, are called early CNV, and statistical analysis is performed by an SPS program.

At this time, the number of data of the initial accompanying audio fluctuation range is 157 because the sampling rate is 512 Hz.

The analysis results obtained by the above analysis method are shown in the table below,

As a result of the analysis, the amplitude of the EEG is higher than the strong wind and position 3 and the weak wind and position 1 when the variable wind volume and fluctuation up and down algorithms of the present invention operate a general air conditioner.

As described in detail above, by controlling the air flow rate and the wind direction by controlling the rotation speed of the cross flow fan and the position of the up and down wind direction louver, it provides an air-conditioning environment that can raise the level of arousal to prevent drowsiness and improve the learning effect among the students. Not only can this be done, but it also has the effect of improving work efficiency for workers.

The arousal level refers to the level of brain activity and can be said to be in the same state of ambient ventilation when drinking coffee.

Claims (1)

The amount of cooling air discharged from the air conditioner is controlled by the rotation speed of the motor which rotates the cross flow fan, and the air direction of the cooling air discharged by the rotation speed control step is a stepping operation of the up and down wind louvers. By controlling the up and down wind direction adjusting step of controlling the motor up and down by the motor, and the rotation speed control step and the up and down wind direction control step to control the position of the rotation speed and the up and down wind direction louver at the same moment in a certain period in time. When the rotational speed of the motor is driven in a strong direction, the position of the up-and-down wind louver is positioned close to the horizontal, close to the vertical when driving weak, and in the middle when driving in the middle of the air conditioner, characterized in that How to improve efficiency?