KR100389536B1 - Air-conditioning method for improving efficiency of air conditioner - Google Patents

Abstract

PURPOSE: An air-conditioning method for improving efficiency of an air conditioner is provided to improve learning effect and work efficiency by controlling the volume of the wind by a cross flow fan and the direction of the wind by right and left wind louvers and enhancing the awakening level. CONSTITUTION: An air-conditioning method for improving efficiency of an air conditioner comprises steps of controlling the volume of cooling air discharged from the air conditioner by the rotational frequency of a motor(102) rotating a cross flow fan(101); controlling the direction of the wind of the cooling air discharged from the former step by controlling the variable position of right and left wind louvers(104) and adjusting the right and left wind louvers right and left; and making the variable position of the right and left wind louvers positioned at a 'right' position in a strong wind, positioned at a 'straight position' in an intermediate wind, and positioned at a 'left position' in a weak wind by generally controlling the first and second steps.

Description

Air Conditioning Efficiency Improvement

The present invention relates to an air conditioner, and in particular, an air conditioner to improve the learning effect and work efficiency by increasing the awakening level (brain activity level) by adjusting the wind direction by a cross flow fan and a left and right wind 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 is 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 strong wind, mid wind, and 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 left and right wind louvers to drive the rhythm slightly irregularly, it provides a sense of airflow to the consumer and simply feels cool.

Therefore, in the present invention, 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 wind direction of the cooling air discharged by the rotation speed control step is the left and right wind direction louvers. Left and right wind direction adjustment step to adjust the left and right direction by the stepping motor to operate, and the control step to increase the awakening level by controlling the rotation speed control step and the left and right wind direction control step as a whole, by the cross flow fan The purpose is to improve the learning effect and work efficiency by adjusting the wind direction by the wind direction louver to raise the arousal level.

The air conditioner of the present invention and its periphery are composed of a cross flow fan for discharging air cooled by a heat exchanger through which cold refrigerant circulates so that hot air in the room heat exchanges as shown in FIGS. 2 to 9. 101, the motor 102 for rotating the cross flow fan 101, the motor control unit 103 for controlling the rotation speed of the motor 102, and the cross flow fan 101 are discharged. Left and right wind direction louvers 104 to adjust the direction of the cooling air to the left and right, the stepping motor 105 is driven to adjust the left and right wind direction louvers 104, and controls the driving of the stepping motor 105 The stepping motor control unit 106, the motor control unit 103 and the stepping motor control unit 106 is constituted by the efficiency improvement operation mode 107 which selects the air volume and the wind direction to be controlled according to time.

In addition, as shown in FIG. 5, the external environmental chamber and exterior chamber 108, which is an external temperature and humidity controlled outdoor temperature / humidity control, the RAC outdoor unit 111 installed in the external chamber 108, and the RAC indoors in the external chamber 108. An internal chamber 109 having a front surface mounted thereon, an electroencephalogram 113 installed in the outer chamber 108 to measure brain waves, and attached to the head of the test subject connected to the electroencephalogram 113. The EEG measurement sensor 112, the A / D conversion board 114 for converting the analog signal measured by the EEG measuring instrument 113 into a digital signal, and the A / D conversion 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 Visual signal generator 116 showing the visual signal after 1.8 seconds after hearing , It constitutes a signal response keyboard 118 subjects is formed to show the reaction time in the signal shown in the time 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 with the cold refrigerant is discharged to the outside of the air conditioner by the cross flow fan 101.

As shown in FIG. 2, when the efficiency improvement operation mode (awake operation mode 107) is selected, the left and right wind direction louvers 104 which control the direction of the cooling air discharged to the outside of the air conditioner are connected to the stepping motor 105. The wind direction control of the left and right wind direction louvers 104 is performed by a stepping motor control unit 106 that controls the stepping motor 105, as shown in FIG. 4B. Located in position 1 (a), position 2 (b), position 3 (c), the position of the left and right wind louvers 104 is controlled according to time, and in the initial state the forward direction of position 2 (b) Headed.

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, weak, the rotational speed according to time as shown in FIG. It is controlled and starts from the medium speed (rpm) in the initial state.

At this time, the left and right wind direction louvers 104 are controlled to be positioned at position 3 (c) when the rotation speed of the motor 102 is driven to "strong", and the left and right wind direction louvers 104 are controlled when the rotation speed is driven to "medium". It is controlled to be positioned at position 2 (b), and controls the left and right wind direction louvers 104 to be positioned at position 1 (a) when the rotation speed is driven to "about".

The reason for controlling the position of the left and right wind direction louver 104 is to direct the left and right wind direction louvers in the middle direction to solve the refusal to the concentrated air flow, and to prevent the cooling air is delivered directly directly to the consumer to ensure the comfort The purpose is to improve efficiency as you feel and increase your awareness.

In order to do as described above, the left and right wind louvers 104 are positioned at the "right" position of position 3 (c) when there is a strong wind, so that the consumer feels a sense of airflow by the indirect wind, and when the wind is left and right wind louvers 104 Positioned in position 2 (b) in the "right" position, so that the consumer feels a certain air flow, and when the wind is weak left and right wind louver 104 in the position "left" of position 1 (a) air conditioning When installed, the same effect was applied to the left and right sides.

The control angles of the left and right wind louvers 104 whose positions are adjusted to the position 1 (a), the position 2 (b), and the position 3 (c) are equally spaced, and the angle is preferably 30 to 40 °. For the most effective angle, 35 ° is ideal.

The rotation speed-time control waveform of the cross flow fan of FIG. 3 and the position-time control waveform of the left and right wind louvers of FIG. 4A are repeatedly operated at the same cycle. The maximum effect is achieved in minutes.

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

Attaching the EEG sensor 112 to detect the brain wave on the head of the 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 measures the EEG with a signal sent from the EEG sensor 112.

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

The EEG sensor 112 is attached to the subject's scalp by the international standard 10-20method as shown in FIG. 6, and measures the same active signal in the sensing method for detecting EEG. By attaching directly to the bipolar method and the EEG generation part that can remove minute harmonics, 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 to figure out.

In this case, the electroencephalography sensor 112 is attached to the attachment position of Fz, Cz, and Pz 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.

And Figure 8 shows the results of CNV experiments by S.Torri's fragrance stimulation (Perfumery, "The Psychoacoustic Variation and the Psychological Effects of Fragrance" "CNV and the psychological effects of odour" in "of fragrance", researchers: S.Torri, H.Fukuda, H.Kanemoto, R.Mianchi (R) Miyanchi, Y.Hamauzu and M.Kawasaki, Publisher: Chapman and Hall, 1988. Jasmine flavor moves higher in the baseline than lavender. It can be seen.

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 the protocol waveform diagram as shown in Fig. 7 is to derive the optimal condition of awakening, ie, to improve efficiency, and to reduce the external conditions that affect the EEG as much as possible. It is to concentrate 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 displayed 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 to reduce the artifact (Artifact) so that the EEG characteristics appear only in the change in the 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, and detecting the EEG signal from the EEG measuring instrument 113 and the A / D conversion board ( Data is stored in the EEG measurement PC 115 through 114).

The data stored in the EEG PC 115 is raw data of FIG. 9, and the EEGs affected by noise, such as eye movements and response errors, are removed by visual analysis. The averaged data is averaged by about 30 valid data.

The value 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, is called early CNV, and statistical analysis is performed by the SPSS program.

In this case, the number of data of the initial accompanying audio fluctuation range is 157 since the sampling frequency is 512 Hz.

The analysis results obtained by the above analysis method are shown in Table 1 below.

Table 1

As a result of the above statistical analysis, the fluctuation amount of wind and fluctuation of right and left wind of the present invention are higher in amplitude and amplitude of brain waves than in strong wind and position 3, weak wind and position 2 when operating a general air conditioner. I can tell.

As described in detail above, the present invention controls the rotational speed of the cross flow fan and the position of the left and right wind direction louvers to increase the arousal level, which means the level of brain activity such as the ambient ventilation state when drinking coffee by adjusting the air volume and the wind direction. By providing a cooperative environment, it is possible to prevent drowsiness and improve the learning effect among users, especially students, as well as to improve work efficiency for workers.

1 is a conventional air conditioner,

(A) is a perspective view of an air conditioner.

(B) is sectional side view of 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 left-right wind louver of the present invention,

(A) is the position-time control waveform diagram of the left and right wind louvers.

(B) shows deformation position of left and right wind louvers.

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

Figure 6 is a position attached 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 fragrance stimulation.

9 is an analysis process of the brain wave data of the present invention.

*** Explanation of symbols for main parts of drawing ***

101: cross flow fan 102: motor

103: motor control unit 104: left and right wind 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 / B conversion board

115: electroencephalogram PC 116: visual signal generator

117: voice signal generator 118: signal response keyboard

Claims (1)

A rotation speed control step of controlling the amount of cooling air discharged from the air conditioner by the rotation speed of the motor for rotating the cross flow fan; Wind direction of the cooling air discharged in the rotation speed control step is the left and right wind direction control step of adjusting the left and right wind direction louvers in the left and right direction by controlling the fluctuation position of the left and right wind direction louvers; The rotational speed control step and the left and right wind direction control step are collectively controlled so that the fluctuating position of the left and right wind direction louvers is in the "right" position of position 3 (c) in the strong wind, and in position 2 (b) in the middle wind. The air conditioner for improving efficiency of the air conditioner, characterized in that it comprises a control step to be placed in the "left" position of position 1 (a) when the wind is in the "right" position.