KR20040066535A - Apparatus for controlling ventilation in car and controlling method thereof - Google Patents

Abstract

PURPOSE: A ventilating system of a vehicle and a control method thereof are provided to keep the vehicle room fresh, and to ventilate the vehicle efficiently by regulating the opening degree of a vent hole actively according to rpm of a motor. CONSTITUTION: A ventilating system of a vehicle is composed of a ventilating door(210) reciprocating and regulating the opening degree of a vent hole(202) of a tailgate(200); a rotating shaft(220) combining the end of the ventilating door with the tailgate by a hinge; a motor turning the rotating shaft; and a control unit regulating the opening degree of the vent hole by controlling rpm of the motor according to condition from input units installed inside and outside the vehicle. Rpm of the motor is controlled with the control unit according to the signals from the input units, and the opening degree of the vent hole is regulated actively.

Description

Ventilation control device of vehicle and its control method {APPARATUS FOR CONTROLLING VENTILATION IN CAR AND CONTROLLING METHOD THEREOF}

The present invention relates to a vehicle ventilation control device and a control method thereof, and in particular, a ventilation control device installed to adjust the opening degree of a tailgate installed at the rear of a vehicle, and a predetermined step for effectively controlling indoor ventilation by the ventilation control device. The present invention relates to a vehicle ventilation control device and a control method of improving ventilation performance.

In general, the air conditioning system installed in the vehicle is a ventilation system that ventilates the polluted air largely according to the breathing of the occupant in the cabin, in order to provide a comfortable environment for the occupant regardless of the external weather conditions, and the temperature in the cabin Equipped with air conditioning and heating to maintain the temperature. As one of several functions of the air conditioning apparatus, there is a function of removing fogging phenomenon that removes frost and frost generated on glass surfaces such as windows of automobiles due to temperature difference between inside and outside of the vehicle and increase of humidity in the interior of the automobile. It can be solved by lowering the room humidity by the ventilation device.

On the other hand, the operation method of the ventilation device is a natural ventilation method to allow the outside air to flow into the interior of the vehicle using the wind pressure generated by the driving of the vehicle, and forced ventilation to forcibly introduce the outside air by rotating the electrically operated blower fan There is a method, and the air introduced into the vehicle by the above methods circulates the inside of the vehicle and is discharged to the outside of the vehicle to achieve ventilation of the vehicle. Here, the representative to play the role of the air discharge is the tailgate installed in the rear of the car.

As shown in FIG. 1, the tailgate 20 is installed at a predetermined cutout formed in the rear of the vehicle (specifically, the trunk side panel), and includes a plurality of ventilation holes 21 divided into a predetermined size so as to communicate with the outside. Have At this time, the opening area of the ventilation hole 21 is an important factor in determining the ventilation effect. If the opening area of the ventilation hole 21 is large, the ventilation effect is improved while the cooling and heating effect is lowered. In this case, when the ventilation hole 21 is formed small, the air-conditioning effect is improved while the ventilation effect is lowered, so that the occupant is inconvenient to open the door of the door at any time. At this time, if indoor ventilation is not frequently performed, fogging occurs frequently in the window due to the humidity difference between the inside and outside of the vehicle, so that the driver has difficulty in securing the field of vision and greatly affects the safety of the vehicle.

In order to supplement these problems, it is known that the method disclosed in the Republic of Korea Patent Publication No. 1999-50291 as a method for controlling the indoor pressure of the vehicle for improving the heating and cooling performance.

The indoor pressure control method of the vehicle, in a vehicle equipped with a discharge fan forcibly discharging the indoor air through a relief valve, the first step of driving the air-conditioning unit when the rapid cooling or heating mode is selected, and the first step In the second step of driving the exhaust fan for forcibly discharging the indoor air to the outside when the air conditioning unit is driven at the same time and driving the blower fan for blowing cold or warm air into the room, the indoor step by the inflow of cold or warm air in the second step When the temperature reaches the set temperature is made comprising a third step of stopping the driving of the discharge fan and adjusting the number of revolutions of the blowing fan to maintain a constant indoor temperature.

An indoor pressure control device for a vehicle for performing the indoor pressure control method of the vehicle includes a cooling / heating switch for driving a cooling device or a heating device, a temperature detection sensor for detecting an indoor temperature of the vehicle, and the air-conditioning switch and temperature detection. It comprises a control unit to which the sensor is connected.

The control unit may drive a cooling device or a heating device according to the switching of the air conditioning switch, and as shown in FIG. 2, a blower fan for blowing cold air or warm air into the room and a discharge fan forcibly discharging the indoor air to the outside ( Drive 40).

The discharge fan 40 is installed on one side of the relief valve 30 (same concept as the tailgate described above) mounted on the trunk panel 10 of the vehicle, and the pressure difference between the inside and outside of the relief valve 30 is The flap 32 is mounted to open and close the air passage of the relief valve 30 body by the flow of air according to the drive of the discharge fan 40. In addition, the lower end side of the relief valve 30 is formed with a fixing protrusion 31 for supporting the closed operation state of the flap 32 so that the outside air does not flow into the vehicle interior through the relief valve 30.

A process of performing the indoor pressure control of the vehicle by the indoor pressure control apparatus of the vehicle configured as described above will be described with reference to FIG. 3.

When the driver selects the rapid cooling or rapid heating mode through the air conditioner switch (S11), the control unit drives the cooling device (S12) or the heating device (S13) according to the driver's instruction, and the cool air or warmth is the interior of the car. By driving the discharge fan 40 so as to flow smoothly (S14) forcibly discharge the indoor air to the outside. In addition, the control unit drives the blower fan (S15) so that the cold air or warm heat exchanged by the cooling device or the heating device is circulated in the room.

Accordingly, since the indoor pressure of the vehicle is changed to a low pressure state by the driving of the discharge fan 40, a large amount of cool air or warm air circulates through the room by the blowing fan, thereby rapidly cooling or heating. And, as described above, if the room temperature of the vehicle measured by the temperature detection sensor due to rapid cooling or heating reaches a predetermined temperature (S16) and reaches the preset temperature, the control unit discharge fan 40 Stop driving (S17) and adjust the rotational speed of the blowing fan (S18) to keep the room temperature constant.

However, in the indoor pressure control method of the vehicle, since the indoor pressure control device of the vehicle is operated only in the rapid cooling mode, there is a problem that the ventilation of the vehicle is not sufficiently achieved in other modes. That is, when the discharge fan 40 is not operated, forced discharge by the discharge fan 40 is not performed, and indoor air is not discharged due to a pressure difference between indoors and outside. There is a problem that is not actively made.

In addition, the indoor pressure control device of the vehicle only controls the operation of the discharge fan 40 according to the indoor temperature detected from the temperature detection sensor, but only through the ventilation of the indoor humidity or the discharge fan 40 by controlling the rotation speed. It is difficult to effectively cope with changing indoor environment due to lack of control. For example, if fogging occurs in the window due to an increase in indoor humidity, the occupant selects the defrost mode in order to remove it. In this case, if the car is not rapidly cooled, indoor ventilation is not sufficient, so the generated fogging occurs quickly. Cannot be removed.

In addition, in the method of controlling the indoor pressure of the vehicle, the exhaust fan 40 has a disadvantage in that the energy consumption of the vehicle is large because it must be continuously operated while the indoor temperature reaches a set temperature. In addition, when the set temperature is reached, the operation of the discharge fan 40 is stopped. In this case, since indoor air is not sufficiently discharged to the outside of the vehicle through the relief valve 30, ventilation of the interior of the vehicle is not smoothly performed. .

Therefore, the above-mentioned prior art is effective in achieving rapid heating and cooling of the vehicle, but after reaching a certain temperature, the exhaust fan 40 is not operated, thereby greatly reducing the ventilation effect of the vehicle, and thus the air in the vehicle is easily clouded. It does not solve the driver's drowsiness caused by the driver and the fogging phenomenon appearing in the window, which affects the safety of the car.

The present invention has been made to solve the above problems, it is possible to adjust the optimal ventilation amount for each air conditioning mode, and the vehicle ventilation control device and control method that can keep the ventilation of the car smoothly while always using less energy It aims to provide.

1 is a perspective view showing a part of a vehicle in which a general tailgate is installed.

Figure 2 is a view showing that the conventional indoor pressure regulator is installed in the tailgate.

Figure 3 is a flow chart showing a conventional indoor pressure control method.

Figure 4a is a view showing the flow of air according to the operating state and the ventilation control device installed in the tailgate of the vehicle according to the present invention.

Figure 4b is a block diagram showing means for controlling the ventilation control device of the vehicle according to the present invention.

5 is a flowchart illustrating a ventilation control method for a vehicle according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100 ... trunk panel 200 ... tailgate

202 Horizontal member 202 Ventilation

203 ... space 210 ... ventilation door

211.Door plate 220 ... Rotating shaft

300 control unit 310 input unit

320 ... motor

In order to achieve the above object, the present invention, in the vehicle ventilation control device is installed in the tailgate having a plurality of ventilation holes to communicate with the outside in the rear of the vehicle: adjusting the opening degree of the ventilation hole while reciprocating a certain section Ventilation doors; A rotating shaft hingely coupling one end of the ventilation door to a tail gate; A motor for rotating the rotating shaft; And, characterized in that it comprises a control unit for controlling the rotational speed of the motor to adjust the opening degree of the ventilation hole in accordance with the conditions input from each input means installed in the vehicle interior / exterior.

According to the present invention, the ventilation door is installed to be inclined downward to the outside through the ventilation hole is to open and close the ventilation hole, the upper end is preferably supported rotatably by the rotating shaft on the indoor side.

In addition, the present invention, the ventilation door for adjusting the opening degree of the plurality of ventilation holes provided in the tailgate installed at the rear of the vehicle; A rotating shaft hingely coupling one end of the ventilation door to a tail gate; A motor for rotating the rotating shaft; And a controller configured to control the rotational speed of the motor so that the opening degree of the ventilation hole is adjusted according to a condition input from each input means installed inside / outside the vehicle. A control method of a regulating device, the method comprising: determining whether a defrost mode is performed by the controller at an initial stage of an air conditioning mode operation; In the defrost mode, opening the ventilation door at the maximum angle to completely open the ventilation hole; And determining, by the controller, the degree of indoor humidity sensed and input by the input means in the defrost mode, if the indoor humidity is greater than a specific value, maintaining a completely open state of the ventilation hole, and the indoor humidity being less than or equal to the specified value. In this case, it is determined whether the air-conditioning mode, the air-conditioning mode by opening the ventilation door at a predetermined angle to partially open the ventilation hole, if not the heating and cooling mode, the step of switching the ventilation door to the initial state; characterized in that it comprises a.

According to the present invention, in the step of determining whether the defrost mode at the initial operation of the air conditioning mode, if not the defrost mode, determining whether the heating and cooling mode; In the cooling and heating mode, the control unit controls the motor to open the ventilation door at a predetermined angle, and when not in the heating and cooling mode, switching or maintaining the ventilation door to an initial state.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in Figure 4a, the ventilation control device of the vehicle according to the present invention is installed on the tailgate 200 formed in a predetermined size on the side of the trunk panel 100 of the vehicle and the tailgate 200 is a predetermined interval It is partitioned into a plurality of ventilation holes 202 by the horizontal member 201. In this case, the ventilation hole 202 of the tailgate 200 may be partitioned in various directions, and in this embodiment, a case in which the ventilation holes 202 are horizontally stacked and partitioned will be described.

One side of the tail gate 200 is provided with a ventilation door 210 composed of a door plate 211 to open and close the opening of the ventilation hole 202 by turning. One door plate 211 is installed in each of the ventilation holes 202, and the upper end thereof is inclined across the ventilation hole 202 so that the upper end thereof faces the indoor side and the lower end thereof faces the outdoor side. That is, the door plate 211 is installed to be inclined downward through the ventilation hole 202 to the outside, and a space 203 is formed between the interior sides of the door plates 211. The lower end of the door plate 211 is supported while contacting the horizontal member 201 on the outdoor side, the upper end of which is rotatably supported by the rotation shaft 220. As described above, when the upper end of the door plate 211 is disposed to maintain a predetermined distance from the ventilation hole 202 toward the interior of the vehicle, the lower end of the ventilation door 210 contacts the horizontal member 201 so that the ventilation hole ( Even when the 202 is closed, the ventilation hole 202 may be opened according to the pressure difference between the inside and outside of the vehicle through the space 203 formed between the upper portion of the ventilation door 210 and the ventilation hole 202. Even in the car ventilation can be made smoothly.

A plurality of ventilation doors 210 may be employed, and a plurality of ventilation doors 210 may be driven in conjunction with a motor.

According to the present invention, the rotation shaft 220 is supported on one side of the tail gate 200 so as to be reversely rotated, and the motor 320 is rotated on the rotation shaft 220 so that the rotation shaft 220 can be reversely rotated (FIG. 4b). When the driver switches the air conditioning mode, the motor 320 may be electrically connected to the air conditioning mode switch such that the rotation shaft 220 is rotated by the rotation angle of the corresponding mode preset by the switching operation of the air conditioning mode switch. In addition to the air conditioning mode, it is preferable to be connected to an automatic temperature control device (Autoamtic Temperature Control) mounted on the vehicle so that the ventilation amount can be automatically controlled according to the vehicle's indoor environment.

Referring to FIG. 4B, the control unit 300 receives a signal from an input means 310 (see FIG. 4B) such as each sensor or an air conditioning switch installed inside / outside the vehicle. Is a general device installed in a vehicle to perform temperature and air volume control calculations and, for example, feedback control of actuators of each system according to the result. By the feedback control of the control unit 300, for example, the opening degree of the blower inlet by the internal / external air switching door is adjusted, or the rotation speed of the blower motor is controlled, so that the environment in the vehicle interior is preset by the driver or the vehicle. The entire air conditioning process is automatically controlled to maintain the state of. In addition, an input means 310 such as a humidity sensor may be further installed at one side of the vehicle, and the input means 310 such as the humidity sensor may be electrically connected to the control unit 300 of the automatic temperature control device. 300 controls the operation of each actuator of the air conditioning apparatus.

In the present invention, by considering the input means 310, the control unit 300 to control the number of revolutions of the motor 320 to operate the ventilation door 210 in accordance with various air-conditioning mode or the vehicle indoor / outdoor environment By controlling the opening degree of the ventilation hole 202, the amount of ventilation in the vehicle can be actively controlled.

The control method of the vehicle ventilation control apparatus of the present invention having such a configuration is performed as follows.

When the driver starts, the air conditioner is initialized. When the air conditioner switch is turned on in this state, various signals are input from the input means 310 such as each sensor or switch to the controller 300. The control unit 300 receiving the signal controls the output voltage to the motor 320 to rotate the motor 320 forward and backward after calculating the rotation angle of the rotating shaft 220 according to the ventilation amount suitable for the air conditioning mode, As the ventilation door 210 rotates forward and backward by the driving of the motor 320, the ventilation amount of the indoor air of the vehicle can be controlled as the opening degree of the ventilation hole 202 is adjusted.

Looking specifically at the control method of the ventilation control device of the vehicle according to the present invention during such an air conditioning process, first, the control unit 300 determines whether the air conditioning mode is the defrost mode (S101).

If it is determined that the defrost mode, the indoor humidity of the car is a high fogging phenomenon occurred in the window and the passenger selected the defrost mode to remove this, the control unit 300 according to the input signal of the input means 310 the motor By controlling the 320, the ventilation door 210 is opened at the maximum angle (S102) to completely open the ventilation hole 202. In this way, even when the blower is stopped, a large amount of dry air is introduced into the room by the driving wind, and when the blower is operated, the air discharged into the room is circulated around the window of the car and the tailgate 200 is ventilated. At the same time as the air flows out through the air 202, a large amount of dry air is introduced into the room through the air conditioner, so that the indoor humidity drops quickly and the fogging phenomenon that has been generated is quickly removed.

Meanwhile, in the defrost mode, the control unit 300 is detected by an input unit 310 such as a humidity sensor in the step of completely opening the ventilation hole 202 by opening the ventilation door 210 at the maximum angle (S102). In operation S103, the degree of indoor humidity is determined by calculating an input signal, and if the indoor humidity is larger than a specific value, the controller 300 controls to maintain the maximum angle of the ventilation door 210 in the defrost mode. do. In addition, as described above, in the defrost mode, the degree of indoor humidity is determined (S103). If the indoor humidity is below a specific value, it is determined whether the air-conditioning mode (S104), and in the air-conditioning mode, the ventilation door 210 is opened at a predetermined angle. In operation S109, the ventilation hole 202 is partially opened, and the ventilation door 210 is switched to the initial state when the cooling / heating mode is not in operation S105.

On the other hand, when the control unit 300 determines that the air conditioning mode is not the defrost mode at the beginning of the air conditioning mode operation, it is determined whether the air-conditioning mode (S106). If it is determined that the current air conditioning mode is the heating and cooling mode, the control unit 300 controls the motor 320 to open the ventilation door 210 at a predetermined angle (S107), and if the air conditioning mode is not the ventilation door 210 To switch to or maintain the initial state (S105).

According to the present invention, the ventilation door 210 is opened at the maximum angle in the deep mode, and the ventilation door 210 is opened at the predetermined angle in the air-conditioning mode. The reason is as follows.

When the ventilation door 210 is opened at the maximum angle in the air-conditioning mode, the indoor ventilation effect is improved, but there is a disadvantage that the air-conditioning performance is lowered. Since the control (performance) of the desired temperature / humidity is more important than the ventilation in the heating / cooling mode, the occupant's door 210 is not opened at the maximum angle, but at a certain angle in a range that does not adversely affect performance. This is because it is preferable to open with. This constant angle can be set in advance by experiment.

According to the vehicle ventilation control device and the control method of the present invention configured as described above in accordance with the signal of the various input means input according to various air conditioning modes or indoor / outdoor environment instead of the exhaust fan conventionally installed for ventilation Since the opening degree is controlled by the controller, ventilation is actively performed, thereby providing an optimal indoor environment. In addition, the motor is driven or stopped in accordance with the output voltage control by the control unit has the effect of reducing the energy for driving the motor.

While the invention has been shown and described with respect to specific embodiments thereof, it will be understood that the invention can be variously modified and varied without departing from the spirit or scope of the invention as set forth in the claims below. It should be included in the scope of the invention.

Claims (4)

In a vehicle ventilation control device installed in the tailgate 200 having a plurality of ventilation holes 202 to communicate with the outside in the rear of the vehicle: Ventilation door 210 for adjusting the opening degree of the ventilation hole while reciprocating a certain section; A rotating shaft 220 hinged to one end of the ventilation door to the tail gate; A motor 320 for rotating the rotating shaft; And, Ventilation control of the vehicle, characterized in that it comprises a control unit 300 for controlling the rotational speed of the motor to adjust the opening degree of the ventilation hole in accordance with the conditions input from each input means 310 installed inside / outside the vehicle Device. The method of claim 1, The ventilation door 210 is installed to be inclined downward to the outside through the ventilation hole 202 to open and close the ventilation hole, and the upper end thereof is rotatably supported by the rotating shaft 220 at the indoor side. Ventilation control device for a vehicle. A ventilation door 210 for adjusting an opening degree of a plurality of ventilation holes 202 provided in the tailgate 200 installed at the rear of the vehicle; A rotating shaft 220 hinged to one end of the ventilation door to the tail gate; A motor 320 for rotating the rotating shaft; And a control unit 300 for controlling the rotational speed of the motor to adjust the opening degree of the ventilation hole according to a condition input from each input means 310 installed inside / outside the vehicle. As a method of controlling the car's ventilation control device to Determining whether the controller is in the defrost mode at an initial stage of air conditioning mode operation; In the case of the defrost mode, opening the ventilation door to the maximum angle to completely open the ventilation hole: And, The control unit determines the degree of indoor humidity detected and input by the input means in the defrost mode state, if the indoor humidity is greater than a specific value to maintain a fully open state of the ventilator, if the indoor humidity is below a specific value, heating and cooling Determining whether the mode is in the heating and cooling mode, by opening the ventilation door at a predetermined angle to partially open the ventilation hole, and switching the ventilation door to the initial state when the cooling and heating mode is not included. Device control method. The method of claim 3, wherein Determining whether the air-conditioning mode is in a defrost mode in the initial stage of operation of the air conditioning mode; In the cooling and heating mode, the control unit controls the motor to open the ventilation door at a predetermined angle, and when the heating and cooling mode is not, switching or maintaining the ventilation door to the initial state; How to control ventilation device.