KR100803510B1 - Method for controlling air flow and air flow controlling system by the same - Google Patents

Abstract

A device and a method for controlling an air flow are provided to compare a difference between a vehicle room temperature with atmospheric air for increasing an air discharge amount instantly, thereby controlling the room temperature properly in a short time. A method for controlling an air flow includes the steps of measuring a vehicle room temperature(S11), calculating a difference between the measured temperature and a target temperature preset in a vehicle air conditioner, comparing the temperature difference with a target temperature difference preset in a control system(S12), and controlling an instant discharge amount of the air which is discharged to the vehicle room according to the comparison result. If the calculated temperature difference is higher than the target temperature difference, the air discharge amount is increased(S13).

Description

Airflow control method and airflow control system {METHOD FOR CONTROLLING AIR FLOW AND AIR FLOW CONTROLLING SYSTEM BY THE SAME}

1 is a schematic cross-sectional view showing a conventional air conditioner.

2 is a schematic block diagram illustrating a wind volume control system according to an embodiment of the present invention.

3 is a flowchart illustrating a method for controlling air volume according to an embodiment of the present invention.

Figure 4 is a schematic cross-sectional view showing an air conditioning apparatus according to another embodiment of the present invention.

FIG. 5 is a schematic block diagram illustrating a wind volume control system according to another embodiment of the present invention.

6 is a flowchart illustrating a method for controlling air volume according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawing

20, 60: air conditioning control system 22, 62: room sensor

24, 64: calculator 26, 66: control signal output unit

40: air conditioning device 42: outside air intake

44: bet inlet 46: blower (pan)

48: motor 50: evaporator

52: first damper 54: heat core

56 (56a to 56n): second damper 58 (58A to 58N): indoor outlet

62 (62A to 62N): indoor sensor 68: dispense amount input

The present invention relates to a vehicle air conditioner and a control method thereof, and more particularly, to a system for distributing air volume of an air conditioner and a method for distributing air volume in an air conditioner.

In general, in the vehicle air conditioner 2, air is sucked from the outside air intake port 4 and the inside air intake port 6 using a blower pan 8. At this time, the blower 8 is driven by the blower motor 10. The blower 8 not only sucks air from the outside but also serves to flow this air into the air conditioner 2.

The introduced air is cooled while passing through an evaporator 12. Some of this cooled air is via a heater core 16 located relatively below the evaporator 12.

The amount of air passing through the heater core 16 is adjusted by the damper 14. The temperature of the air is controlled by mixing the air cooled while passing through the evaporator 12 with the air heated while passing through the heater core 16 and by using the damper 14 to adjust the mixing ratio.

The air controlled at a constant temperature is discharged in the same amount to each part of the vehicle interior through the indoor exhaust port 18.

In the conventional case, the ratio of the amount of air discharged to each part of the vehicle interior is fixed.

That is, the air discharged through the air conditioner is discharged to each part of the vehicle interior according to a predetermined constant rate, for example, generally the same rate. As a result, the same amount of air is discharged through each indoor outlet.

Therefore, when the temperature inside or outside the vehicle is extremely low, the driver often feels cold because warm air is always discharged at a constant rate without considering the driver's condition and the air distribution inside the vehicle.

For example, if the driver who feels cold in the upper body does not have enough warm air to the upper body, or if the driver who feels cold in the lower body does not have enough warm air to the foot, the driver may not be able to provide a comfortable driving environment. Will cause problems for your health.

The present invention is to solve the problems as described above, to adjust the amount of warm air or cold air discharged into the vehicle in order to quickly adjust the vehicle interior temperature to a comfortable temperature.

Another object of the present invention is to increase the amount of warm air discharged to a lower temperature or increase the amount of cold air discharged to a higher temperature according to the vehicle temperature distribution, thereby providing a comfortable driving environment. will be.

Still another object of the present invention is to increase the amount of warm air discharged to the part where the driver feels cold or to increase the amount of cold air discharged to the part where the heat is felt by the driver's choice, thereby driving comfortably by themselves. It's about choosing an environment.

The present invention relates to a method for controlling air volume distribution of a vehicle air conditioner.

According to an embodiment of the present invention, the present invention comprises the steps of measuring the indoor temperature of the vehicle, calculating the temperature difference between the measured vehicle indoor temperature and the target temperature preset in the air conditioner control system, the calculated temperature difference and the air conditioner Comparing the target temperature difference preset in the control system and controlling the instantaneous discharge of air discharged into the vehicle interior by the comparison result, wherein the controlling step includes the case where the calculated temperature difference is greater than the target temperature difference. To increase air emissions.

In this way, the temperature difference between the interior and the exterior of the vehicle is increased by comparing the preset temperature with the preset value, so that the temperature of the interior of the vehicle can be quickly adjusted to a comfortable temperature.

In addition, the present invention may further comprise the step of periodically detecting the temperature difference, according to the change in the temperature difference, it is possible to add or subtract the instantaneous discharge of the discharged air.

Since the temperature difference is detected periodically and control is made accordingly, it is possible to keep the proper temperature continuously.

According to another embodiment of the present invention, the present invention comprises the steps of measuring the temperature of each point of the vehicle interior, calculating the temperature difference between the measured temperature of each point of the vehicle interior and the target temperature preset in the air conditioner control system, Comparing the calculated temperature difference with a target temperature difference preset in the air conditioner control system, and controlling the amount of air discharged to each outlet of the vehicle interior based on the comparison result, wherein the controlling step includes: When the calculated temperature difference is greater than the target temperature difference, the air discharge of the discharge port discharged toward the temperature measuring point at which the temperature difference is calculated increases, and when the calculated temperature difference is smaller than the target temperature difference, the temperature at which the temperature difference is calculated Reduce the air emissions from the outlet vent towards the measuring point.

As the local temperature of the vehicle cabin is partially different, the driver may feel different cold or heat for each part of the body, and the occupant may also be different from the cold felt by the individual. According to the present invention, it is possible to increase the discharge of hot air discharged to the lower temperature part on low temperature days, and to increase the discharge of cold air discharged to the higher temperature part on high temperature days. . Thus, the interior of the vehicle can be brought to a faster and more comfortable state.

In addition, the present invention may further include the step of periodically detecting the respective temperature differences, it is also possible to change the air amount discharge rate in accordance with the change of each temperature difference.

The present invention is an air volume control system of an air conditioner including an air inlet, a blower, a blower motor, an evaporator, a heater core, a damper and a plurality of indoor outlets, the plurality of discharges for controlling the amount of air discharged to the plurality of indoor outlets. Further comprising a distribution damper, wherein the discharge distribution damper is controlled by an air conditioner control system, the air conditioner control system, a plurality of indoor sensors for measuring the temperature of the vehicle interior, an outdoor sensor for measuring the temperature of the outside of the vehicle, each Comparing the temperature measured from the sensors of the, and a calculation unit for determining the emission distribution ratio and outputs a control signal according to the discharge distribution ratio determined by the calculation unit, a control signal output unit for controlling the plurality of discharge distribution dampers.

The present invention may further include a distribution amount input unit configured to input an emission distribution ratio signal arbitrarily selected by a driver to a control signal output unit, wherein the control signal output unit is configured to input an emission distribution ratio signal through the distribution amount input unit. By temporarily blocking the signal input from the calculation unit and outputting a control signal by the signal from the distribution amount input unit, the hot and cold wind emission can be adjusted according to the emission ratio selected by the driver.

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment of the present invention.

<Example 1>

2 is a block diagram showing an air conditioner control system 20 according to Embodiment 1 of the present invention.

The air conditioner control system 20 includes an arithmetic unit 24 for processing an operation required for air conditioner control using an indoor sensor 22 measuring a temperature T _i of a vehicle interior, a measured temperature T _i , and Based on the calculation result of the calculating part 24, the control signal output part 26 which outputs the control signal which controls the air conditioner motor 10 and the damper 14 is included.

3 is a flowchart showing a method of performing air conditioner control in the air conditioner control system 20 according to the present embodiment.

First, the indoor sensor 22 measures the room temperature T _i (step S11). The measured data of the room temperature T _i is sent to the calculation unit 24 so that the temperature difference ΔT with the target temperature T _s preset in the storage unit (not shown) of the air conditioner control system is calculated, and the calculated temperature difference ΔT Is compared with the preset temperature difference ΔT _s in the storage unit of the air conditioner control system (step S12).

At this time, the target temperature T _s may be set in advance by the driver in consideration of the season and the external temperature, or may be set in advance at the time of manufacturing the air conditioner control system of the vehicle. In addition, the appropriate temperature difference ΔT _s also calculates an appropriate room temperature T _i according to the external temperature T _o , may be inputted in advance into a storage unit (not shown) in the control system, or may be set by the driver as necessary.

△ T is greater than △ T _s, increasing the discharge amount of the air (S13), △ if T is less than △ T _s, maintains the current discharge amount of the air (S13).

When it is decided to increase the blowing amount, the control signal output unit 26 outputs a control signal for driving the air conditioner motor 10 more strongly.

In addition, in order to blow cooler air in summer, a control signal for downwardly adjusting the damper 14 may be output, and in order to blow out warmer air in winter, a control signal for upwardly adjusting the damper 14 may be output. You may output it together.

As described above, according to this embodiment, when the outside of the vehicle is cold or hot, the inside of the vehicle does not have a large difference from the outside temperature, and when the driving can not be performed comfortably, the air volume of the air conditioner is increased to quickly adjust the temperature in the vehicle. It becomes possible.

<Example 2>

4 is a sectional view schematically showing an air conditioning apparatus 40 of the present invention according to the second embodiment.

Air is sucked into the air conditioner 40 by the blower 46 from the outside air intake port 42 and the inside air intake port 44. The blower 46 is driven by the motor 48.

The sucked air passes through the evaporator 50, and then some of the air is sent to the heater core 54 disposed below the evaporator 50. The amount of air sent to the heater core 54 is controlled by the first damper 52.

When the warm air is discharged to the interior of the vehicle, the first damper 52 is adjusted upward to increase the amount of air drawn into the heater core 54, and when the cold air is discharged, the first damper 52 is increased. ), The amount of air drawn into the heater core 54 is reduced.

The amount of air discharged through the plurality of indoor outlets 58A to 58N is controlled by the plurality of second dampers 56a to 56n provided at each branch point.

5 is a block diagram showing an air conditioner control system 60 according to the present embodiment.

The air conditioner control system 60 includes a plurality of indoor sensors 62A to 62N for measuring temperatures T ₁ to T _N near the plurality of indoor outlets 58A to 58N.

The plurality of indoor sensors 62A to 62N output the measured temperatures T ₁ to T _N to the calculator 64.

The calculation unit 64 performs calculations for the respective temperatures T ₁ to T _N to determine an appropriate air discharge distribution amount. The processing result for the air discharge distribution amount is output from the calculating unit 64 to the control signal output unit 66, and the control signal output unit 66 is based on the processing result from the calculating unit 64, respectively, for each second damper. The second dampers 56a to 56n are controlled by outputting a control signal for controlling.

In this case, the control signal output unit 66 may also output a signal for controlling the first damper 52 or the motor 48 to adjust the temperature of the discharged air or to adjust the total blowing amount.

In addition, the air conditioner control system 60 of the present embodiment has a distribution amount input unit 68 which allows the external air to control how the entire air discharged on the operation panel of the vehicle interior is distributed to each of the outlets. It may further include.

When the driver inputs the dispensing amount of each outlet through the dispensing amount input unit 68, the control signal output unit 66 inputs the air discharge dispensing amount in spite of the processing result from the calculating unit 64. Control according to one dose.

FIG. 6 is a flowchart showing a method of controlling the air volume of the air conditioning apparatus 40 according to the present embodiment.

First, the plurality of indoor sensors 62A to 62N installed in the vehicle interior measure and output the temperature T ₁ to T _N of each point of the vehicle interior to the calculation unit 64 (step S21).

The calculation unit 64 calculates the temperature difference ΔT ₁ to ΔT _N from the measured room temperature with the target temperature T _s previously stored, and sets a target set in advance in a storage unit (not shown) in the air conditioning apparatus control system 60. and compared with the temperature difference △ T _s (step S22).

That is, the calculation unit 64 separately calculates a difference between each measured room temperature and a target temperature T _s preset in a storage unit (not shown) in the air conditioner control system, and the target temperature T _s is a vehicle driver and a passenger. As a temperature which can be felt comfortably, it can be set to the room temperature desired by the driver in advance through the input part (not shown) on a vehicle operation panel, and may be preset at the time of manufacture of an air conditioning apparatus.

Subsequently, the calculation unit 64 compares the calculated temperature differences ΔT ₁ to ΔT _N with the magnitudes of the target temperature differences ΔT _s preset in the storage unit (not shown) in the air conditioning apparatus control system 60.

The target temperature difference ΔT _s is a value set by the driver in advance, and refers to a temperature range in which the operation is not disturbed based on the target temperature T _s . The target temperature difference ΔT _{s can} also be set to a desired value by the driver through an input unit (not shown) on the operation panel, and may be set in advance at the time of manufacturing the air conditioner.

When the temperature difference ΔT _i (i is an integer of 1 ≦ i ≦ N) calculated by the calculating unit 64 is larger than the target temperature difference ΔT _s , the outlet port 58i discharges air to the point of the temperature difference ΔT _i . ) (step S23) increases the discharge amount of a temperature difference △ T _i is the case greater than the target temperature difference △ T _s or smaller, reducing the emission of the outlet (58i) to a temperature difference between exhaust air to the point where △ T _i (Step S24).

Therefore, the temperature difference between the set target temperature T _s is large and the temperature at the point where the driver feels cold or hot is changed faster, so that the temperature of the vehicle interior can be adjusted evenly and quickly as appropriate.

According to the present invention, the vehicle interior temperature can be quickly adjusted to a comfortable temperature by adjusting the amount of air discharged into the vehicle.

Further, according to the present invention, the room temperature can be quickly and comfortably increased by increasing the amount of warm air discharged to a lower temperature or increasing the amount of cold air discharged to a higher temperature according to the vehicle temperature distribution. Can be changed to

In addition, according to the present invention, by the driver's selection, it is possible to increase the amount of warm air discharged to the part where the driver feels cold or to increase the amount of cold air discharged to the part which feels the heat, thereby The driver can choose a comfortable driving environment.

Claims (6)

delete Measuring a room temperature of the vehicle; Periodically calculating a temperature difference between the measured vehicle interior temperature and a target temperature preset in an air conditioner control system, and comparing the calculated temperature difference with a target temperature difference preset in an air conditioner control system; And And a control step of controlling the instantaneous discharge of air discharged into the vehicle interior according to the calculated temperature difference and the change in the target temperature difference. The control step, According to the calculated temperature difference and the change in the target temperature difference, the instantaneous discharge of the discharged air is added or subtracted, and when the calculated temperature difference is greater than the target temperature difference, the air flow rate control method, characterized in that for increasing. delete Measuring a temperature at each point in the vehicle interior; Periodically calculating a temperature difference between the measured temperature at each point of the vehicle interior and a target temperature preset in the air conditioner control system, and comparing the calculated temperature difference with a target temperature difference preset in the air conditioner control system; And And controlling a discharge amount of air discharged to each of the outlets of the vehicle interior according to the calculated temperature difference and the target temperature difference. The control step, According to the change of the calculated temperature difference and the target temperature difference, the air discharge rate is changed, If the calculated temperature difference is greater than the target temperature difference, the air discharge of the discharge port discharged toward the temperature measurement point at which the temperature difference is calculated is increased, And when the calculated temperature difference is smaller than a target temperature difference, reducing the air discharge amount of the discharge port discharged toward the temperature measurement point at which the temperature difference is calculated. delete An air volume control system of an air conditioner including an air inlet, a blower, a blower motor, an evaporator, a heater core, a damper, and a plurality of indoor outlets, Further comprising a plurality of discharge distribution damper for adjusting the amount of air discharged to the plurality of indoor outlets, The discharge distribution damper is controlled by an air conditioner control system, The air conditioner control system, A plurality of indoor sensors for measuring the temperature of the vehicle interior; An outdoor sensor measuring a temperature outside the vehicle; A calculator configured to compare the temperatures measured by the respective sensors to determine an emission distribution ratio; A control signal output unit for outputting a control signal according to the emission distribution ratio determined by the calculating unit to control the plurality of emission distribution dampers; And A discharge amount input unit arbitrarily selected by the driver, wherein the discharge amount input unit is input to the control signal output unit; When the discharge distribution ratio signal is input through the distribution amount input unit, the control signal output unit temporarily cuts off a signal input from the calculating unit, and outputs a control signal by a signal from the distribution amount input unit. Air volume control system made with.

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