KR102346525B1 - Air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle, and even if the air conditioner is "cut off" while the fogging of the window glass is being removed, it is possible to prevent the fogging of the window glass, and through this, the air conditioner can be "cut off" suddenly by "cut off" It aims to effectively respond to "fogging of windows".
In order to achieve this object, the present invention includes an intake door for selectively introducing outdoor air or bet while exercising to an outdoor air mode position and a betting mode position, and when the defogging mode is selected by the user's selection or automatic control In the air conditioner for a vehicle including an air conditioner that removes fogging of a window glass while being turned on, when the air conditioner is cut off while entering the defogging mode and removing the fogging of the window glass, the intake door is opened for a preset time in outdoor mode and a control unit for inducing introduction of outside air into the vehicle interior by forcibly changing the position.

Description

Vehicle air conditioning system {AIR CONDITIONING SYSTEM FOR AUTOMOTIVE VEHICLES}

The present invention relates to an air conditioner for a vehicle, and more particularly, even if the air conditioner is "cut off" while the fogging of the window glass is removed, it is possible to prevent the fogging of the window glass, and through this, the air conditioner is "cut off" It relates to an air conditioning system for a vehicle that can effectively respond to sudden "fogging of windows" by

If fogging occurs on the window pane while driving the vehicle, in most cases, press the Def. Switch of the air conditioner controller to turn it on.

Then, as shown in FIG. 1 , the air conditioner enters the “defogging mode” and the air conditioner enters the “defogging mode”, and the compressor 1 of the air conditioner and the intake door ) (3), blower (5) and deep door (7) are controlled.

Therefore, the air inside and outside the vehicle is sucked in and passes through the evaporator 9, and the air that has passed through the evaporator 9 is cooled to a low temperature and discharged to the window glass through the Def. Vent 7a. The discharged cold air removes the fogging of the window glass.

On the other hand, a recent vehicle is equipped with an auto defogging device that automatically removes the fogging of the windowpane when fogging occurs on the windowpane.

This technology detects the relative humidity of the windowpane (hereinafter abbreviated as “humidity”) through a humidity sensor (not shown), and then, when the detected humidity of the windowpane is above the preset “reference humidity”, “defogging” mode" and turn on the air conditioner.

Then, as the compressor (1), intake door (3), blower (5) and deep door (7) of the air conditioner are controlled, the air inside and outside the vehicle passes through the evaporator (9), The air is discharged to the window glass through the deep vent 7a while being cooled to a low temperature, and the cold air thus discharged removes the fogging of the window glass.

However, in such a conventional air conditioner, the air conditioner is suddenly "cut off" while entering the "defogging mode" and removing the fogging of the window glass. For example, When icing occurs in the evaporator 9, the air conditioner is overloaded, or the engine is rapidly accelerated, the air conditioner is abruptly "cut off" for performance improvement and vehicle safety. In this case, the "defogging mode" The disadvantage is that the "de-fog operation" of the window glass is stopped when it is released.

And because of these shortcomings, there is a problem in that the fogging of the window glass is rapidly increased, and because of these problems, the defect that it interferes with safe driving while driving is pointed out.

The present invention has been devised to solve the problems of the prior art, and its purpose is to enter the "defogging mode" and to remove the fogging of the windowpane, and even if the air conditioner is "cut off", fogging of the windowpane occurs To provide an air conditioning system for a vehicle that can prevent

Another object of the present invention is to prevent the fogging of the window glass even if the air conditioner is “cut off” during de-fogging of the window, so that the air conditioner can effectively respond to the sudden “fogging of the window” caused by the “cut-off” and , through this, to provide an air conditioner for a vehicle that can prevent a vehicle safety accident due to fogging of a windowpane.

In order to achieve this object, an air conditioner for a vehicle according to the present invention includes an intake door for selectively introducing outside air or bet while exercising to an outside air mode position and a betting mode position, and defogging by a user's selection or automatic control. In the air conditioner for a vehicle including an air conditioner that removes fogging of a window glass while being turned on when a mode is selected, when the air conditioner is cut off while entering the defogging mode and removing the fogging of the window glass, and a control unit for inducing introduction of outside air into the vehicle interior by forcibly switching the intake door to the outside air mode position for a set period of time.

Preferably, when the air conditioner is cut off during the defogging mode, the control unit forcibly switches the intake door to the outdoor air mode position for a preset time period, and the forced outdoor air mode switching time of the intake door is outside the vehicle. It is characterized in that it is controlled to be differentiated according to the outside temperature.

And the control unit, the outdoor air mode forced switching time of the intake door, characterized in that the control to gradually increase in inverse proportion to this as the outdoor temperature is lowered.

In some cases, when the air conditioner is cut off during the defogging mode, the control unit forcibly switches the intake door to the outdoor air mode position for a preset time period, and the forced outdoor air mode switching time of the intake door is outside the vehicle. It is characterized in that the control is differentiated according to the outside temperature and the number of passengers in the vehicle.

In some cases, when the air conditioner is cut off during the defogging mode, the control unit forcibly switches the intake door to the outside air mode position for a preset time period, and the time for forced outside air mode switching of the intake door is set to a window inside the vehicle interior. It is characterized in that it is controlled to be differentiated according to the humidity of the

According to the air conditioner for a vehicle according to the present invention, when the air conditioner is "cut off" during the "defogging mode", the intake door is controlled to induce the introduction of outside air. "Even if it is, it is possible to reduce the humidity in the vehicle interior, and through this, there is an effect of preventing fogging of the window glass.

In addition, when the air conditioner is "cut off" during the "defogging mode", not only the introduction of outside air through the control of the intake door, but also the air volume and wind pressure of the air blown to the window glass through the control of the blower and the deep door. Due to the structure, it is possible to more effectively suppress the fogging of the window glass when the air conditioner is "cut-off", and through this, there is an effect of preventing the fogging of the window glass regardless of the "cut-off" of the air conditioner.

In addition, since fogging of the window glass can be prevented regardless of the “cut-off” of the air conditioner, even if the air conditioner is “cut off” during the “defogging mode”, there is an effect of safely driving regardless of the fogging of the window glass.

1 is a view showing a conventional vehicle air conditioner;
2 is a view showing a first embodiment of an air conditioner for a vehicle according to the present invention;
3 is a flowchart showing an operation example of the air conditioner according to the first embodiment;
4 is a view showing a second embodiment of an air conditioner for a vehicle according to the present invention;
5 is a flowchart showing an operation example of the air conditioner according to the second embodiment;
6 is a view showing a third embodiment of an air conditioner for a vehicle according to the present invention;
7 is a flowchart showing an operation example of the air conditioner according to the third embodiment.

Hereinafter, a preferred embodiment of the air conditioner for a vehicle according to the present invention will be described in detail based on the accompanying drawings (the same components as in the prior art will be described using the same reference numerals).

[First embodiment]

First, before examining the features of the air conditioner for a vehicle according to the present invention, the air conditioner for a vehicle will be briefly described with reference to FIG. 2 .

The vehicle air conditioner includes an intake door (3), a blower (5), an evaporator (9) and a deep door (7) of an air conditioner.

Intake door 3, while rotating between the outdoor air mode position (A) and the betting mode position (B), selectively open the outdoor air conduction inlet (3a) or the inner airway inlet (3b).

In particular, in the "outside mode", the outside air inlet 3a is opened while being rotated to the outside air mode position (A), and in the "betting mode", the betting inlet 3b is rotated to the betting mode position (B) while being rotated to the outside air mode position (A). to open Therefore, it allows the outside air or bet to be selectively introduced.

Blower (5), inside and outside the air inlet (3a, 3b) through the intake outside air or bet, and then blows the inhaled inside, outside air to the inside of the air conditioning case (10).

The evaporator 9 generates cold air with the refrigerant provided from the compressor 1 and cools the internal air of the air conditioning case 10 with the generated cold air. Thus, it enables the cooled air to be supplied into the vehicle interior.

The deep door 7 controls the amount of opening of the deep vent 7a to control the air discharged to the window pane.

On the other hand, the air conditioner enters the "defogging mode" when the user turns on a deep switch (not shown) to remove the fogging of the windowpane.

And the air conditioner that has entered the "defogging mode" turns on the air conditioner. Then, the sucked air is cooled while passing through the evaporator 9, and the cooled low-temperature air is discharged to the window glass through the deep vent 7a, and the cold air discharged in this way removes the fogging of the window glass.

In some cases, the air conditioner further includes an auto defogging device that automatically removes the fogging of the windowpane.

The auto defogging device detects the humidity of the windowpane through a humidity sensor (not shown), and operates the air conditioner while entering the “defogging mode” when the detected humidity of the windowpane is above the preset “reference humidity” ( ON).

Accordingly, the sucked air is cooled while passing through the evaporator 9, and the cooled low-temperature air is discharged to the window glass through the deep vent 7a, so that the fogging of the window glass can be removed.

Next, referring to FIG. 2 , the features of the air conditioner for a vehicle according to the present invention will be described in detail as follows.

First, the air conditioner of the present invention includes an outdoor temperature detecting means 20 and an air conditioner cutoff detecting means 30 .

The outdoor temperature sensing means 20 is composed of an outdoor air sensor, detects the temperature outside the vehicle, and then inputs the sensed "outdoor temperature" data to the controller 40 to be described later.

The air conditioner cutoff detection means 30 is composed of a sensor that detects whether the air conditioner compressor 1 is operating or not, and outputs an "air conditioner cutoff signal S1" when the air conditioner compressor 1 is cut off, and a control unit ( 40) is entered.

In some cases, the air conditioner cutoff detection means 30 may be configured as an automatic control unit (not shown) that automatically controls the air conditioner.

The automatic control unit is configured to improve the performance of the air conditioner and improve the performance of the air conditioner when conditions requiring the air conditioner to be “cut off”, for example, icing occurs in the evaporator 9, the air conditioner is overloaded, or the engine is rapidly accelerated. By "cut-off" the air conditioner for the safety of the vehicle, it is possible to detect the cut-off of the air conditioner through the cut-off control of the air conditioner.

Such an automatic control unit is equipped with a microprocessor and a driving circuit, and since it is a known technology, a detailed description thereof will be omitted.

And the air conditioner of this invention is provided with the control part (40).

The control unit 40 is equipped with a microprocessor, and when the "air conditioner cutoff signal (S1)" is input from the air conditioner cutoff detection means 30 in a state in which the air conditioner enters the "defogging mode", Since the air conditioner is "cut off" in the state of removing the fogging, it is determined that there is a lot of risk of fogging of the windowpane, and according to this judgment, the "emergency control mode" is entered.

Then, the control unit 40 entering the "emergency control mode" induces the introduction of "outside air" by forcibly switching the intake door 3 to the outdoor air mode position A for a preset time period.

Accordingly, it is possible to reduce the humidity in the vehicle interior while the introduced "outside air" ventilates the air in the vehicle interior. Thereby, fogging of the window glass is prevented. As a result, fogging of the window glass is prevented despite the "cut-off" of the air conditioner.

On the other hand, when entering the "emergency control mode", the control unit 40 forcibly switches the intake door 3 to the outdoor air mode position A for a preset time period, but the "external air mode forced switching time of the intake door 3" "Control is made to be differentiated according to the "outside temperature" input from the outdoor temperature sensing means 20.

For example, as shown in [Table 1] below, when "outside temperature" is 30℃, the intake door 3 is forcibly switched to the outdoor mode position (A) for about "5 seconds", and "outside temperature" is When the “degree” is 20℃, the intake door 3 is forcibly switched to the outdoor mode position A for about “10 seconds”, and when the “outside temperature” is 10℃, the intake door 3 is It is forced to switch to the outdoor mode position (A) for “15 seconds”, and when the “outside temperature” is 0°C, the intake door 3 is forcibly switched to the outdoor mode position (A) for about “20 seconds”.

Outside temperature (℃) Outdoor mode forced conversion time (Sec) 30 5 20 10 10 15 0 20

The reason for this configuration is that the fogging probability of the window glass is different depending on the "outside temperature". Therefore, by differentiating the "external air mode forced switching time" of the intake door 3 according to the "outside temperature", it is possible to actively respond to the fogging occurrence probability of the window glass that changes according to the "outside temperature".

Preferably, the "external air mode forced switching time" of the intake door 3 is configured to gradually increase in inverse proportion to the lowering of the "outside air temperature".

This is because the lower the "outside temperature", the higher the probability of fogging of the window glass. Therefore, as the “outside temperature” decreases, the “external air mode forced switching time” of the intake door 3 is gradually controlled to be longer, and as the “outside temperature” decreases, the time for introducing “outdoor air” into the window pane is increased, and through this , it enables you to actively respond to the possibility of fogging of the window glass that gradually increases as the “outside temperature” decreases.

On the other hand, the control unit 40 is equipped with a memory unit 42 that stores "outside air mode forced switching time" for each "outside temperature".

Accordingly, the control unit 40, when entering the "emergency control mode", when "outside air temperature" is input from the outdoor temperature detecting means 20, "external air mode forced switching time" corresponding to the input "outside temperature" It is detected by the memory unit 42 and the intake door 3 is controlled based on the detected "external air mode forced switching time".

And when entering the "emergency control mode", the control unit 40 forcibly switches the intake door 3 to the outdoor mode position (A) for a preset period of time, but this forced conversion to the outdoor mode position (A) is an "emergency" Control to repeat periodically at a preset time interval until the "control mode" is released.

Therefore, at the time of "cut-off" of the air conditioner, the forced switching of the intake door 3 to the outdoor mode position A is periodically repeated until the "cut-off" of the air conditioner is finished. In this way, the occurrence of fogging of the window glass during the "cut-off" of the air conditioner is prevented as much as possible.

Next, an operation example of the present invention having such a configuration will be described with reference to FIGS. 2 and 3 .

First, when the air conditioner is turned on (S101) and the user selects or enters the "defogging mode" by automatic control (S103), the controller 40 controls the air conditioner to "cut off" It is determined whether or not (S105).

As a result of the determination, if the air conditioner is “cut off”, the control unit 40 enters the “emergency control mode” (S107), and the control unit 40 that enters the “emergency control mode” controls the The "external mode forced switching time" is detected in the memory unit 42 (S109).

And when the detection of "forced outdoor mode switching time" is completed, the control unit 40 controls the intake door 3 to the outdoor mode position A during the detected "forced outdoor mode switching time" (S111).

At this time, the intake door 3 is controlled to the outdoor air mode position A during the “external air mode forced switching time”, but periodically controlled at a preset time interval.

Then, while being controlled to the outdoor air mode position A, air outside the vehicle is introduced, and the introduced outside air reduces the humidity inside the vehicle while ventilating the air in the vehicle. Thereby, fogging of the windowpane is prevented.

On the other hand, after entering the "emergency control mode", the control unit 40 continuously determines whether the "cut-off" of the air conditioner is released (S113).

As a result of the determination, if the “cut-off” of the air conditioner is released, the control unit 40 is released from the “emergency control mode” (S115), and the control unit 40 released from the “emergency control mode” closes the intake door 3 It returns to the original position (S117).

[Second embodiment]

Next, a view showing a second embodiment of the air conditioner according to the present invention is shown in FIGS. 4 and 5 .

First, referring to FIG. 4 , the present invention according to the second embodiment further includes a means for detecting the number of passengers 50 .

The number of passengers detecting means 50 is composed of a seat sensor, a belt sensor, etc. installed on each seat in the vehicle interior.

The number of passengers detecting means 50 detects passengers riding on each seat in the vehicle, and then inputs the detected passenger information to the control unit 40 . Accordingly, the control unit 40 can detect the number of passengers in the vehicle.

On the other hand, when the "air conditioner cutoff signal (S1)" is inputted from the air conditioner cutoff detection means 30 during the control of the "defogging mode", the control unit 40 includes the "outdoor temperature In addition to ", it is configured to control the intake door 3 to the outside air mode position A side in consideration of the "number of passengers" input from the number of passengers detecting means 50 .

In detail, when the air conditioner is "cut off" during the control of the "defogging mode", the controller 40 enters the "emergency control mode".

Then, the control unit 40 that has entered the “emergency control mode” detects the “outside air mode forced switching time” corresponding to the “outside temperature” of the outside air temperature detecting means 20 from the memory unit 42 .

And when the detection of "forced outdoor mode switching time" is completed, the control unit 40, the detected "outdoor mode forced switching time (T1)" and the "number of passengers (M)" input from the number of passengers detecting means 50 Calculates the "final outdoor air mode forced conversion time (T2)" by arithmetic processing with [Equation 1] below built-in in advance.

[Equation 1]

Final outdoor mode forced switching time (T2) = Outdoor mode forced switching time by outside temperature (T1) × number of passengers (M) × constant (K)

And when the calculation of the "final outdoor air mode forced switching time (T2)" is completed, the control unit 40 moves the intake door 3 to the outdoor mode position (A) based on the calculated "final outdoor mode forced switching time (T2)" ) to control it.

In particular, the intake door 3 is controlled to the outdoor air mode position A during the "final outdoor air mode forced switching time T2".

Accordingly, during the "final outdoor air mode forced switching time T2", fresh outdoor air is introduced into the vehicle interior, and the air in the vehicle interior can be ventilated.

Thereby, the humidity in the vehicle interior is reduced, and as a result, fogging of the window glass is prevented. In this way, fogging of the window glass is prevented in spite of the "cut-off" of the air conditioner.

On the other hand, when entering the "emergency control mode", the control unit 40 forcibly switches the intake door 3 to the outdoor air mode position (A) during the "final outdoor air mode forced switching time T2", but this outdoor mode position Controlled so that the forced conversion to (A) is periodically repeated at a preset time interval until the “emergency control mode” is released.

Accordingly, at the time of "cut-off" of the air conditioner, the forced switching of the intake door 3 to the outdoor mode position A is periodically repeated until the "cut-off" of the air conditioner is finished. In this way, the occurrence of fogging of the windowpane during the "cut-off" of the air conditioner is avoided as much as possible.

Next, an operation example of the second embodiment having such a configuration will be described with reference to FIGS. 4 and 5 .

First, when the air conditioner is turned on (S201), and the "defogging mode" is entered by the user's selection or by automatic control (S203), the controller 40 controls the air conditioner to "cut off" It is determined whether or not (S205).

As a result of the determination, if the air conditioner is "cut off", the control unit 40 enters the "emergency control mode" (S207), and the control unit 40 that enters the "emergency control mode" controls the The "external mode forced switching time (T1)" is detected in the memory unit 42 (S209).

And when the detection of "forced outdoor mode switching time (T1)" is completed, the control unit 40 stores the detected "forced outdoor mode switching time (T1)" and the number of passengers (M) in the vehicle in advance. [Equation 1] is processed to calculate the "final outdoor air mode forced switching time (T2)" (S211).

And when the calculation of the "final outdoor air mode forced switching time T2" is completed, the control unit 40 moves the intake door 3 to the outdoor mode position (A) during the calculated "final outdoor air mode forced switching time T2". control (S213).

At this time, the intake door 3 is controlled to the outdoor air mode position A during the "final outdoor air mode forced switching time T2", but periodically controlled at a preset time interval.

Then, during the "final outdoor air mode forced switching time T2", fresh outdoor air is introduced into the vehicle interior and the air in the vehicle interior is ventilated. Thereby, the humidity in the vehicle interior is reduced. As a result, fogging of the window glass is prevented despite the "cut-off" of the air conditioner.

Meanwhile, after entering the “emergency control mode”, the control unit 40 continuously determines whether the “cut-off” of the air conditioner is released (S215).

As a result of the determination, if the "cut-off" of the air conditioner is released, the control unit 40 is released from the "emergency control mode" (S217), and the control unit 40 released from the "emergency control mode" opens the intake door 3 It returns to the original position (S219).

According to the present invention of the second embodiment having such a structure, when the air conditioner is "cut off", the intake door 3 is forcibly switched to the "outside air mode" to induce the introduction of outside air, but the "outside air mode" forced switching time As it is a structure that precisely controls the air conditioner according to the "outside air temperature" and the "number of passengers" in the vehicle, when the air conditioner is "cut-off", the "outside air volume" introduced into the vehicle is more precisely controlled according to the environmental conditions inside and outside the vehicle. can do.

Accordingly, it is possible to more precisely control the fogging of the window glass due to the "cut-off" of the air conditioner, and as a result, it is possible to prevent the fogging of the window glass as much as possible.

[Third embodiment]

Next, a view showing a third embodiment of the air conditioner according to the present invention is shown in FIGS. 6 and 7 .

First, referring to FIG. 6 , the present invention of the third embodiment is provided with a window glass humidity sensing unit 60 instead of the outdoor temperature sensing unit 20 of the [first embodiment].

The window pane humidity sensing means 60 is a humidity sensor installed on the window glass side in the vehicle interior, and detects the humidity of the window glass portion, and then inputs the detected humidity of the window glass portion to the control unit 40 .

Here, as the humidity sensor of the window glass humidity sensing means 60, it is preferable to use a humidity sensor of an auto defogging device (not shown) installed in the past.

Therefore, it is possible to secure the humidity data of the window pane without installing a separate humidity sensor, and through this, the effect of cost reduction can be expected.

On the other hand, when the "air conditioner cutoff signal S1" is input from the air conditioner cutoff detection means 30 during the "defogging mode", the control unit 40 enters the "emergency control mode" and the intake door 3 for a preset time. ) to the outside air mode position (A) to induce the introduction of "outside air".

At this time, the control unit 40 compulsorily switches the intake door 3 to the outdoor air mode position A for a preset time period, but the “external air mode forced switching time” of the intake door 3 is determined by the window humidity sensing means (60). It is controlled to be differentiated according to the input "Window Humidity" in

For example, as shown in [Table 2] below, when "Window Humidity" is "60%RH", the intake door 3 is forcibly switched to the outdoor mode position (A) for about "5 seconds" and , When “Window Humidity” is “70%RH”, the intake door 3 is forcibly switched to the outdoor mode position (A) for about “15 seconds”, and when “Window Humidity” is “80%RH” In this case, the intake door 3 is forcibly switched to the outdoor mode position (A) for about “20 seconds”.

And when "Window Humidity" is "90%RH", the intake door 3 is forcibly switched to the outdoor mode position (A) for about "25 seconds", and when "Window Humidity" is "92%RH" In this case, the intake door 3 is forcibly switched to the outdoor mode position (A) for about “30 seconds”, and when the “window humidity” is “94%RH”, the intake door 3 is turned on for about “35 seconds” During this time, it is forced to switch to the outdoor mode position (A).

Window Humidity (%RH) Outdoor mode forced conversion time (Sec) 60 5 70 15 80 20 90 25 92 30 94 35

The reason for this configuration is that the fogging probability of the window is different depending on the "humidity of the window". Accordingly, by differentiating the "external air mode forced switching time" of the intake door 3 according to the "window humidity", it is possible to actively respond to the fogging occurrence probability of the window that is changed according to the "window humidity".

Preferably, the "external air mode forced switching time" of the intake door 3 is configured to gradually increase in proportion to the higher "window humidity".

This is because the higher the “window humidity”, the higher the probability of fogging the window. Therefore, as the "window humidity" increases, the "external air mode forced switching time" of the intake door 3 is gradually controlled longer, and as the "window humidity" increases, the time for introducing "outdoor air" into the window pane is increased, and through this , it makes it possible to actively respond to the increasing probability of fogging of the window glass as the "window humidity" increases.

On the other hand, the control unit 40 is equipped with a memory unit 42 that stores the "external air mode forced switching time" for each "window humidity".

Accordingly, when “window humidity” is input from the window humidity sensing means 60 when entering the “emergency control mode,” the control unit 40 sets the “forcible outdoor mode switching time” corresponding to the input “window humidity”. It is detected by the memory unit 42 and the intake door 3 is controlled based on the detected "external air mode forced switching time".

And when entering the "emergency control mode", the control unit 40 forcibly switches the intake door 3 to the outdoor mode position (A) for a preset period of time, but this forced conversion to the outdoor mode position (A) is an "emergency" Control to repeat periodically at a preset time interval until the "control mode" is released.

Therefore, at the time of "cut-off" of the air conditioner, the forced switching of the intake door 3 to the outdoor mode position A is periodically repeated until the "cut-off" of the air conditioner is finished. In this way, the occurrence of fogging of the window glass during the "cut-off" of the air conditioner is prevented as much as possible.

Again, referring to FIG. 6 , the control unit 40 is configured to simultaneously increase the “air volume level” of the blower 5 when entering the “emergency control mode”.

In particular, the "window humidity" input from the window humidity sensing means 60 and various factors are calculated in advance by the [Equation 2] below to calculate the "corrected air volume level" of the blower 5 Then, it is configured to increase the number of air flow stages of the blower 5 based on the calculated "corrected air volume stages".

To explain this in more detail, when entering the "emergency control mode", the control unit 40 determines the "window humidity (H)" input from the window humidity sensing means 60 and the "current air volume level of the blower 5". (C1)" is calculated in advance by the built-in [Equation 2] below to calculate the "corrected air volume stage (C2)" of the blower 5.

[Equation 2]

Blower compensation airflow stage (C2) = Current blower airflow stage number (C1) + 1 + Window glass humidity (H)/100

For example, when the current number of air flow stages (C1) of the blower is “2 stages” and the humidity of the window glass is 60%RH, the blower corrected number of stages (C2) is calculated through [Equation 2] as follows.

3.6(C2) = 2(C1) + 1 + 60/100

And when the calculation of the "corrected air volume stages (C2) (3.6 stages)" is completed, the control unit 40 determines the number of air volume stages of the blower 5 based on the calculated "corrected air volume stages (C2) (3.6 stages)". configured to control. In particular, it is controlled to increase the number of air flow stages of the blower 5 from “2 stages” to “3.6 stages”.

Accordingly, when entering the "emergency control mode", the amount of external air blown into the vehicle interior is increased. Thereby, the ventilation efficiency in the vehicle interior is increased, and the humidity in the vehicle interior is more actively reduced.

As a result, it becomes possible to more effectively suppress the occurrence of fogging of the windowpane despite the "cut-off" of the air conditioner.

On the other hand, the control unit 40, when entering the "emergency control mode", the blower 5 is configured to increase the air volume stage to the "corrected air volume stage C2", but only for a preset time.

In particular, the number of air flow stages of the blower 5 is raised to the "corrected air volume level C2", but the control is performed so that the intake door 3 to the outside air mode position (A) is raised at the same time according to the forced switching time.

Therefore, the "air volume level rise time" of the blower 5 and the "external air mode forced switching time" of the intake door 3 are synchronized and synchronized.

Here, the control unit 40 controls so that the "air volume level rise" of the blower 5 is periodically repeated at a preset time interval together with the "forced outdoor air mode switching" of the intake door 3 .

Therefore, at the time of "cut-off" of the air conditioner, the forced switch of the intake door 3 to the outdoor air mode position A and the "air volume rise" of the blower 5 periodically until the "cut-off" of the air conditioner is finished. repeated.

Referring again to FIG. 6 , the control unit 40 is configured to simultaneously increase the “opening amount” of the deep door 7 when entering the “emergency control mode”.

In particular, the "window humidity" input from the window humidity sensing means 60 and various factors are calculated in advance by [Equation 3] below to calculate the "corrected opening degree" of the deep door 7, and then , is configured to increase the opening amount of the deep door 7 with respect to the deep vent 7a based on the calculated "corrected opening amount".

To explain this in detail, when entering the "emergency control mode", the control unit 40 determines the "window humidity (H)" input from the window humidity sensing means 60 and the "current opening degree of the deep door 7". (D1)" is calculated in advance with the following [Equation 3] to calculate the "corrected opening degree (D2)" of the deep door 7 .

[Equation 3]

Deep door compensation opening amount (D2) = Deep door current opening amount (D1) + 10 + Window glass humidity (H)/10

For example, when the current opening degree D1 of the deep door 7 with respect to the deep vent 7a is "40%" and the window humidity is 60%RH, the depot as follows through [Equation 3] The door correction opening degree D2 is calculated.

56(D2) = 40(D1) + 10 + 60/10

And when the calculation of the "corrected opening degree (D2) (56%)" is completed, the control unit 40, based on the calculated "corrected opening degree (D2) (56%)", the opening amount of the deep door 7 is configured to control In particular, it is controlled to increase the opening amount of the deep door 7 with respect to the deep vent 7a from "40%" to "56%".

Accordingly, when entering the "emergency control mode", the amount of air blown to the window glass is increased. This makes it possible to prevent fogging of the windowpane. As a result, it becomes possible to more effectively suppress the occurrence of fogging of the windowpane despite the "cut-off" of the air conditioner.

Meanwhile, the control unit 40 is configured to increase the opening amount of the deep door 7 to the “corrected opening amount D2” when entering the “emergency control mode”, but increase it only for a preset time.

In particular, the opening amount of the deep door 7 is increased to the “corrected opening amount D2”, and the control is performed so that the intake door 3 to the outside air mode position A is raised at the same time according to the forced switching time.

Therefore, the “opening amount increase time” of the deep door 7 and the “external air mode forced switching time” of the intake door 3 are synchronized and synchronized.

Here, the control unit 40 controls so that the “increase in the opening degree” of the deep door 7 is periodically repeated at a preset time interval together with the “forced switching of the outdoor air mode” of the intake door 3 .

Therefore, at the time of “cut-off” of the air conditioner, the forced switching of the intake door 3 to the outdoor mode position A and the “increasing the opening degree” of the deep door 7 are periodically performed until the “cut-off” of the air conditioner is finished. is repeated with

Next, an operation example of the third embodiment having such a configuration will be described with reference to FIGS. 6 and 7 .

First, when the air conditioner is turned on (S301), and the "defogging mode" is entered by the user's selection or by automatic control (S303), the controller 40 controls the air conditioner to "cut off" It is determined whether or not (S305).

As a result of the determination, if the air conditioner is “cut off”, the control unit 40 enters the “emergency control mode” (S307), and the control unit 40 enters the “emergency control mode” determines the The "external mode forced switching time" is detected in the memory unit 42 (S309).

And when the detection of the "forced outdoor mode switching time" is completed, the control unit 40 controls the intake door 3 to the outdoor mode position A during the detected "forced outdoor mode switching time" (S311).

At this time, the intake door 3 is controlled to the outdoor air mode position A during the “external air mode forced switching time”, but periodically controlled at a preset time interval.

Then, while being controlled to the outdoor air mode position A, air outside the vehicle is introduced, and the introduced outside air reduces the humidity inside the vehicle while ventilating the air in the vehicle. Thereby, fogging of the windowpane is prevented.

On the other hand, after entering the "emergency control mode", in step S309, the control unit 40 calculates the "window humidity" and the "current air volume level" of the blower 5 using the built-in [Equation 2] in advance. to calculate the "corrected air volume stage" of the blower 5, and also calculate and process the "window humidity" and the "current opening degree" of the deep door 7 with the built-in [Equation 3] to calculate the deep door (7) Calculate the "corrected opening degree" of .

And when the calculation of the "corrected air volume stages" of the blower 5 and the "corrected opening degree" of the deep door 7 is completed, the control unit 40, based on the calculated "corrected air volume stages" and "corrected opening degree", The number of air flow stages of the blower 5 and the opening degree of the deep door 7 are controlled (S311). In particular, the number of air flow stages of the blower 5 is increased, and the opening degree of the deep door 7 is increased.

Then, as the wind volume and wind pressure of the air blown to the window glass are increased, the fogging of the window glass is effectively prevented. In this way, fogging of the window glass is prevented despite the "cut-off" of the air conditioner.

Meanwhile, after entering the "emergency control mode", the control unit 40 continuously determines whether the "cut-off" of the air conditioner is released (S313).

As a result of the determination, if the “cut-off” of the air conditioner is released, the control unit 40 is released from the “emergency control mode” (S315), and the control unit 40 released from the “emergency control mode” operates with the intake door 3 and The blower 5 and the deep door 7 are restored to their original state (S317).

According to the present invention of the third embodiment having such a structure, when the air conditioner is "cut-off", not only the intake door 3 is controlled to induce the introduction of outside air, but also the blower 5 and the deep door 7 are operated. Since it has a structure to increase the amount and pressure of air blown to the window glass by controlling it, it is possible to more effectively suppress the occurrence of fogging of the window glass when the air conditioner is "cut-off".

Thus, fogging of the windowpanes can be prevented regardless of the air conditioner “cut-off”. Accordingly, even if the air conditioner is "cut off" while driving the vehicle, it is possible to drive safely regardless of this.

In the above, preferred embodiments of the present invention have been exemplarily described, but the scope of the present invention is not limited to such specific embodiments, and can be appropriately changed within the scope described in the claims.

1: Compressor 3: Intake Door
5: Blower 7: Def. Door
7a: Def. Vent 9: Evaporator
10: air conditioning case (Case) 20: outdoor temperature sensing means
30: air conditioner cutoff detection means 40: control unit
50: number of passengers detection means 60: window humidity detection means
S1: air conditioner cutoff signal

Claims (12)

delete delete delete delete It includes an intake door 3 for selectively introducing outside air or bet while exercising to the outdoor air mode position (A) and the betting mode position (B), and is turned on when the defogging mode is selected by the user's selection or automatic control. In the air conditioner for a vehicle including an air conditioner that removes fogging of a window while being turned on,
When the air conditioner is cut off while entering the defogging mode and removing the fogging of the windowpane, the intake door 3 is forcibly switched to the outdoor air mode position A for a preset time to introduce outdoor air into the vehicle interior. a control unit (40) for inducing;
The control unit 40,
When the air conditioner is cut off during the defogging mode, the intake door 3 is forcibly switched to the outdoor air mode position A for a preset period of time, but the outdoor air mode forced switching time of the intake door 3 is outside the vehicle controlling to be differentiated according to the outside temperature of the vehicle and the number of passengers in the vehicle;
The control unit 40,
Stores the forced outdoor mode switching time (T1) of the intake door (3) for each outdoor temperature,
When the air conditioner is cut off during the defogging mode, the outdoor air mode forced switching time T1 corresponding to the outside air temperature is detected, the detected outdoor air mode forced switching time T1, and the number of passengers in the vehicle ( M) is calculated in advance by the built-in [Equation 1] below to calculate the final outdoor air mode forced switching time T2, and according to the calculated final outdoor air mode forced switching time T2, the intake door 3 Air conditioning system for a vehicle, characterized in that the control to the outside air mode position (A).
[Equation 1]
Final outdoor mode forced switching time (T2) = Outdoor mode forced switching time by outside temperature (T1) × number of passengers (M) × constant (K) 6. The method of claim 5,
The outdoor air mode forced switching time (T1) of the intake door (3) for each outdoor air temperature stored in the control unit (40) is stored in inverse proportion to this to gradually increase as the outdoor air temperature decreases. 7. The method according to claim 5 or 6,
The control unit 40,
When the air conditioner is cut off during the defogging mode, the forced switching of the intake door 3 to the outdoor mode position A is periodically repeated at a preset time interval until the cutoff of the air conditioner is released. Air conditioning system for a vehicle, characterized in that the control. delete delete It includes an intake door 3 for selectively introducing outside air or bet while exercising to the outdoor air mode position (A) and the betting mode position (B), and is turned on when the defogging mode is selected by the user's selection or automatic control. In the air conditioner for a vehicle including an air conditioner that removes fogging of a window while being turned on,
When the air conditioner is cut off while entering the defogging mode and removing the fogging of the windowpane, the intake door 3 is forcibly switched to the outdoor air mode position A for a preset time to introduce outdoor air into the vehicle interior. a control unit (40) for inducing;
The control unit 40,
When the air conditioner is cut off during the defogging mode, the intake door 3 is forcibly switched to the outdoor air mode position A for a preset period of time, but the outdoor air mode forced switching time of the intake door 3 is set to the inside of the vehicle. control to be differentiated according to the humidity of the windowpane;
controlling the forced outdoor mode switching time of the intake door 3 to gradually increase in proportion to the increase in the humidity of the window glass;
The control unit 40,
When the air conditioner is cut off during the defogging mode, the number of air flow stages of the blower 5 is calculated in advance using the [Equation 2] below to calculate the corrected air flow level number C2, and the calculated corrected air volume An air conditioner for a vehicle, characterized in that the number of air flow stages of the blower (5) is increased according to the number of stages (C2).
[Equation 2]
Blower compensation airflow stage (C2) = Current blower airflow stage number (C1) + 1 + Window glass humidity (H)/100 11. The method of claim 10,
The control unit 40,
When the air conditioner is cut off during the defogging mode, the amount of opening of the deep door 7 is calculated in advance by [Equation 3] below to calculate the corrected opening amount D2, and the calculated correction The air conditioner for a vehicle, characterized in that the opening amount of the deep door (7) is increased according to the opening amount (D2).
[Equation 3]
Deep door compensation opening amount (D2) = Deep door current opening amount (D1) + 10 + Window glass humidity (H)/10 12. The method of claim 11,
The control unit 40,
When the air conditioner is cut off during the defogging mode, the intake door 3 is forcibly switched to the outdoor air mode position A, the air volume level of the blower 5 is increased, and the deep door 7 is opened. The air conditioner for a vehicle, characterized in that the control is repeated periodically at a preset time interval until the cut-off of the air conditioner is released while the increase in intensity coincides with each other.

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