KR102295490B1 - Air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle, and when the air discharge mode is switched to the window side direction during cooling in a vehicle interior, the “window glass fogging phenomenon” on the outside of the vehicle due to “cold air discharge” to the window glass portion intended to prevent it.
In order to achieve this object, the present invention provides an air conditioning system for a vehicle including a temp door for controlling a discharge air temperature in a vehicle interior and a mode door for controlling an air discharge mode in the vehicle interior. wherein, when a mode for discharging air to the window pane is selected in the cooling condition of the vehicle interior, a control unit for controlling the temperature of the air discharged to the window glass by controlling the temp door according to the temperature of the air discharged to the window glass is provided. .

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, when the air discharge mode is switched to the window side direction during cooling in a vehicle interior, the "cold air discharge" to the window glass It relates to an air conditioning system for a vehicle that can prevent "fogging of windows".

Cars are equipped with an air conditioning system that cools and heats the interior of the vehicle. As shown in FIG. 1 , the air conditioner includes an air conditioning case 10 , and the air conditioning case 10 includes a temp door 12 for controlling the temperature of the discharged air, and air discharge. Mode doors 20 for controlling the direction are installed.

The temp door 12 is installed at the junction of the cold air passage 12a and the hot air passage 12b, and rotates between the cold air passage 12a and the hot air passage 12b, while the cold air passage 12a and the hot air passage 12a and the hot air passage 12a. 12b) adjust the opening degree. Accordingly, the temperature of the air discharged into the vehicle interior is controlled.

The mode doors 20 include a Def. Door 22 , a Vent Door 24 , and a Floor Door 26 .

The deep door 22 controls the amount of cold and hot air discharged in the direction of the window by adjusting the opening amount of the def. vent 22a in the def. mode or the mix mode. do.

The vent door 24 adjusts the amount of opening of the face vent 24a in the vent mode or the bi-level mode, so that the cold and hot are discharged in the direction of the passenger's face. Adjust the wind volume.

The floor door 26 adjusts the opening amount of the floor vent 26a in the floor mode or the bi-level mode and discharges it to the legs of the passenger and the floor surface of the room. Controls the amount of hot and cold air.

For reference, the "vent mode" is a mode in which air that has passed through the evaporator 30 and the heater 32 is discharged in the direction of the passenger's face, and the "bi-level mode" is a mode that passes through the evaporator 30 and the heater 32. It is a mode in which air is discharged in the direction of the passenger's face and the floor surface of the vehicle interior, and the "mix mode" is a mode in which air that has passed through the evaporator 30 and the heater 32 is discharged to the window glass and the floor surface of the vehicle interior.

In addition, the "deep mode" is a mode in which the air that has passed through the evaporator 30 and the heater 32 is discharged in the direction of the window pane, and the "floor mode" is a mode that discharges the air that has passed through the evaporator 30 and the heater 32 into the interior of the vehicle. It is a mode for discharging to the bottom surface.

Normally, in the cooling mode, "vent mode" or "bi-level mode" is selected. This is because, in the cooling mode, the passenger in the vehicle feels comfortable only when cold air of low temperature is supplied to the passenger's face.

On the other hand, the deep door 22 is configured to open the deep vent 22a by a predetermined amount even in "floor mode".

This is to allow air to be discharged to the window pane even when the air conditioner is controlled in "floor mode", thereby enhancing the dehumidifying performance of the window pane to prevent fogging of the window glass inside the vehicle.

However, in such a conventional air conditioner, when the mode doors 20 that were controlled in the “vent mode” or “bi-level mode” suddenly switch to a mode for discharging air to the window pane in the cooling mode, for example, For example, when switching to "dip mode", "mix mode", or "floor mode", low-temperature cold air starts to be blown even to the window pane. There is a disadvantage that a "fogging phenomenon" occurs in the window glass part outside the vehicle interior corresponding to this.

In addition, there is a problem that it interferes with securing the driver's visibility due to these disadvantages, and as a result, the disadvantage that a lot of obstacles to safe driving while driving is pointed out.

The present invention has been devised to solve the conventional problems as described above, and its purpose is to "discharge cold air" to the window pane when the air discharge mode is switched to the window glass side while cooling the vehicle. An object of the present invention is to provide an air conditioning system for a vehicle that can prevent "fogging of the window glass" on the outside of the vehicle due to the

Another object of the present invention is to prevent the “fogging of the window glass” of the exterior part of the vehicle due to “discharge of cold air” to the window pane, thereby preventing the “fogging of the window glass” of the exterior of the vehicle regardless of the “air discharge mode”. An object of the present invention is to provide an air conditioner for a vehicle that can prevent ", and through this, provide a more favorable visibility to the driver regardless of "air discharge mode".

In order to achieve this object, an air conditioner for a vehicle according to the present invention includes a temp door for controlling a discharge air temperature in a vehicle interior and a mode door for controlling an air discharge mode in the vehicle interior. In the air conditioner for a vehicle comprising: when a mode for discharging air to a window part is selected in a cooling condition in a vehicle interior, the temp door is controlled according to the air temperature discharged to the window part to control the temperature of the air discharged to the window glass part It characterized in that it comprises a control unit for controlling the.

Preferably, when a mode for discharging air to the window pane is selected in the cooling condition of the vehicle interior, the control unit is configured to determine the temperature of the air discharged to the window pane when the air temperature discharged to the window glass is lower than or equal to a preset reference temperature. It characterized in that to control the temp door so as to raise the.

In addition, when the mode for discharging air to the window pane is selected in the cooling condition of the vehicle interior, the control unit opens the temp door by a preset opening angle when the temperature of the air discharged to the window glass is lower than the reference temperature. It is characterized in that it is controlled in the closing direction.

In addition, the control unit may include, when the discharge air temperature of the window portion exceeds the reference temperature, or the interior of the vehicle is released from the cooling condition, or the vehicle is turned off, or the air discharge mode is a discharge mode other than the window portion. , it is characterized in that the temp door is restored to its original state.

According to the air conditioner for a vehicle according to the present invention, when the air discharge mode is switched to the window side direction during cooling in the vehicle interior, the temperature of the air discharged to the window is increased. It has the effect of preventing the "fogging of the window glass" on the outside of the vehicle due to the "cold wind" of the vehicle.

In addition, since it is possible to prevent “fogging of the window glass” on the outside of the vehicle due to “discharge of cold air” to the window, it is possible to prevent difficulties in securing the driver's visibility due to the occurrence of fogging on the outside of the window. , which can help with safe driving.

1 is a view showing a conventional vehicle air conditioner;
2 is a view showing the configuration of an air conditioner for a vehicle according to the present invention;
3 is a flowchart showing an operation example of the air conditioner for a vehicle according to the present invention.

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, 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 air conditioning case 10 , and the temp door 12 and the mode door 20 are installed in the air conditioning case 10 .

The temp door 12 rotates between the cold air passage 12a and the warm air passage 12b to adjust the opening degree of the cold air passage 12a and the warm air passage 12b. Accordingly, the temperature of the air discharged into the vehicle interior is controlled.

The mode doors 20 include a deep door 22 , a vent door 24 , and a floor door 26 .

The deep door 22 adjusts the amount of cold and hot air discharged toward the window glass by adjusting the amount of opening of the deep vent 22a in the deep mode or the mix mode.

The vent door 24 adjusts the amount of cold and hot air discharged in the direction of the passenger's face by adjusting the opening degree of the face vent 24a in the vent mode or the bi-level mode.

The floor door 26 adjusts the amount of cold and hot air discharged to the passenger's legs and the floor surface of the room by adjusting the opening degree of the floor vent 26a in the floor mode or the bi-level mode.

Typically, the deep door 22 is configured to open the deep vent 22a by a predetermined amount even in "floor mode".

Accordingly, even if the air conditioner is controlled in the "floor mode", air can be discharged to the window pane. Accordingly, the dehumidification performance of the window pane is strengthened to prevent fogging of the window glass inside the vehicle interior.

Next, a feature of the vehicle air conditioner according to the present invention will be described in detail with reference to FIGS. 2 and 3 .

First, referring to FIG. 2 , the air conditioner of the present invention includes an air discharge mode detection means 40 for detecting the air discharge mode state.

The air discharge mode detection means 40 is composed of an air discharge mode selection switch (not shown).

The air discharge mode selection switch is a switch for selecting an air discharge mode of the air conditioner, and senses a specific air discharge mode selected by a user. Accordingly, the current air discharge mode state is sensed.

And the air conditioner of the present invention includes a discharge air temperature sensing means 50 for sensing the temperature of the air discharged into the vehicle interior.

The discharge air temperature sensing means 50 is composed of a temperature sensor (not shown) installed in the deep vent 22a on the window side.

The temperature sensor of the discharge air temperature sensing means 50 senses the temperature of the air discharged into the vehicle interior, in particular, the air discharged to the window side portion, and then inputs the sensed temperature data to the controller 60 to be described later. make it

In some cases, the discharge air temperature detecting means 50 may be configured as a door sensor that detects an opening angle of the temp door 12 with respect to the cold air passage 12a.

The door sensor of the discharge air temperature sensing means 50 detects the opening angle of the temp door 12 with respect to the cold air passage 12a, thereby detecting the opening amount of the cold air passage 12a, and By sensing the opening degree, it is possible to indirectly sense the temperature of the air discharged into the vehicle interior through the cold air passage 12a.

Referring again to FIG. 2 , the air conditioner of the present invention includes a control unit 60 .

The control unit 60 is equipped with a microprocessor, and when the air discharge mode input from the air discharge mode detection means 40 is a mode for discharging air to the window pane while the interior of the vehicle is being controlled in the "cooling mode" , for example, if any one of "deep mode", "mix mode", and "floor mode", it is determined whether the discharge air temperature input from the discharge air temperature sensing means 50 is less than or equal to a preset "reference temperature" . For example, it is determined whether it is "15°C" or less.

As a result of the determination, if the discharge air temperature is below the “reference temperature”, that is, below “15° C.”, the control unit 60 discharges cold air to the current window pane. At this time, the temperature of the cold air discharged to the window glass is too high Since it is low, it is recognized that there is a very high possibility that "fogging" will occur on the window glass part corresponding to the exterior of the vehicle.

And when such recognition is received, the control unit 60 determines that it is necessary to increase the temperature of the air discharged to the window in order to prevent "fogging" of the window glass on the outside of the vehicle.

And in accordance with this determination, the control unit 60 enters the "anti-fog mode", and the control unit 60 that enters the "anti-fog mode" controls the temp door 12 in the direction of closing the cold air passage 12a. do.

In particular, the temp door 12 is controlled in a direction to close the cold air passage 12a by a preset opening angle.

Accordingly, the cold air passage 12a is closed and the warm air passage 12b is opened. Accordingly, the temperature of the air discharged to the window glass portion is increased.

As a result, "fogging" of the window glass part outside the vehicle interior due to "cold air discharge" to the window glass part is fundamentally prevented.

Accordingly, it is possible to prevent difficulties in securing the driver's visibility due to fogging on the window glass outside the vehicle, thereby helping to drive safely.

On the other hand, when the discharge air temperature detecting means 50 is a door sensor for detecting the opening angle of the temp door 12, the temp door ( 12) "opening angle data" is output.

Accordingly, the control unit 60, which needs to recognize the “discharge air temperature” in the vehicle interior with the detection data of the discharge air temperature detecting means 50, is configured to use the temp door 12 input from the discharge air temperature detecting means 50. It has a built-in program that converts the “opening angle data” of the “discharge air temperature data”.

As an example, the control unit 60 has a built-in “discharge air temperature” for each “temp door opening angle”. Accordingly, when the “opening angle data” of the temp door 12 is input from the discharge air temperature sensing means 50 , the control unit 60 controls the “discharge air” corresponding to the “opening angle” of the temp door 12 . temperature" is detected, and the detected "discharge air temperature" is recognized as the current "discharge air temperature in the vehicle interior".

In some cases, when the opening angle of the temp door 12 with respect to the cold air passage 12a is input from the door sensor of the temp door 12, the control unit 60 may control the temp door ( When the opening angle of 12) is equal to or greater than the preset "standard opening angle", for example, "6/8" or greater, the amount of opening of the cold air passage 12a is large, so that the air discharged to the window is very low. And, according to this recognition, it is determined that the temperature of the air discharged to the window glass is equal to or less than the "reference temperature", and the temp door 12 is controlled.

In particular, the temp door 12 is controlled in a direction to close the cold air passage 12a by a preset opening angle. For example, it is controlled so that the opening angle of the temp door 12 with respect to the cold air passage 12a is lowered to "5/8" or less.

Referring again to FIG. 2 , the controller 60, while entering the “anti-fog mode”, the “discharge air temperature” in the vehicle interior input from the discharge air temperature sensing means 50 exceeds the “reference temperature” Then, the temp door 12 is returned to its original position while being released from the “anti-fog mode”.

In addition, the control unit 60 returns the temp door 12 to its original position while being released from the “anti-fog mode” even when the interior of the vehicle is released from the “cooling mode” while entering the “anti-fog mode” .

In addition, during the entry of the "anti-fog mode", the control unit 60 may control any of the air discharge mode other than the mode in which air is discharged to the window pane, for example, the "vent mode" and the "bi-level mode". Even when switched to one, the temp door 12 is returned to its original position while being released from the "anti-fog mode".

In addition, the control unit 60 returns the temp door 12 to its original position while being released from the “anti-fog mode” even when the vehicle is turned off while entering the “anti-fog mode”. .

Next, an operation example of the air conditioner according to the present invention will be described in detail with reference to FIGS. 2 and 3 .

First, referring to FIG. 3 , when the air conditioner is turned on ( S101 ), it is determined whether the interior of the vehicle is in the “cooling mode” state ( S103 ).

As a result of the determination, if the "cooling mode" is determined, the control unit 60 determines again whether the "air discharge mode" is selected as a mode for discharging air to the window pane (S105). For example, it is determined whether "dip mode" or "mix mode" or "floor mode" is selected.

As a result of the determination, if any one of "deep mode", "mix mode", and "floor mode" is selected, the controller 60 determines again whether the "discharge air temperature" in the vehicle is equal to or less than the "reference temperature" (S107) ). For example, it is determined whether it is "15°C" or less.

As a result of the determination, if the "discharge air temperature" is less than or equal to the "reference temperature", that is, when it is less than or equal to "15°C", the control unit 60 determines that the temperature of the cold air discharged to the current window is too low, and the corresponding It is recognized that there is a very high risk of "fogging" in the part.

And according to this recognition, it is determined that it is necessary to increase the temperature of the air discharged to the window in order to prevent "fogging" of the window glass on the outside of the vehicle.

And when this determination is made, the control unit 60 enters the “anti-fog mode” (S109), and the control unit 60 that enters the “anti-fog mode” controls the temp door 12 and discharges it to the window pane. The temperature of the air is increased (S111) (see FIG. 2).

Then, "fogging" of the window glass part outside the vehicle interior due to the low-temperature "cold wind" discharged to the window glass part is fundamentally prevented.

Accordingly, it is possible to prevent difficulties in securing the driver's visibility due to fogging in the window glass portion outside the vehicle interior.

On the other hand, after entering the "anti-fog mode", the controller 60 determines whether the "discharge air temperature" in the vehicle interior exceeds the "reference temperature", or whether the interior of the vehicle is released from the "cooling mode", or starting the vehicle It is determined again whether this is OFF or whether the air discharge mode is switched to a discharge mode other than the window portion (S113).

As a result of the determination, the "discharge air temperature" inside the vehicle exceeds the "standard temperature", or the interior of the vehicle is released from the "cooling mode", or the vehicle engine is turned off, or the air discharge mode is set to the window pane. If it is switched to a discharge mode other than that, the control unit 60 is released from the "anti-fog mode" (S115).

And the control unit 60 released from the “anti-fog mode” restores the temp door 12 to its original state.

According to the present invention having such a configuration, when the air discharge mode is switched to the window side during cooling in the vehicle, the temperature of the air discharged to the window is increased, so that the low temperature discharged to the window is reduced. It is possible to prevent "fogging of the window glass" on the outside of the vehicle due to "cold wind".

In addition, since it is possible to prevent “fogging of the window glass” on the outside of the vehicle due to “discharge of cold air” to the window, it is possible to prevent difficulties in securing the driver's visibility due to the occurrence of fogging on the outside of the window. , can help you drive safely.

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.

10: Air conditioning case (Case) 12: Temp. Door
12a: cold air passage 12b: warm air passage
20: Mode Door 22: Def. Door
22a: Def. Vent 24: Vent Door
24a: Face Vent 26: Floor Door
26a: Floor Vent 30: Evaporator
32: Heater 40: Air discharge mode detection means
50: discharge air temperature sensing means 60: control unit

Claims (6)

delete delete delete A vehicle air conditioning system comprising: a temp door (12) for controlling a discharge air temperature in a vehicle; and a mode door (20) for controlling an air discharge mode in the vehicle;
When the mode for discharging air to the window pane is selected in the cooling condition of the interior of the vehicle, the control unit ( 60);
The control unit 60,
When the mode for discharging air to the window pane is selected in the cooling condition of the interior of the vehicle, when the temperature of the air discharged to the window is lower than a preset reference temperature, the temp door can increase the temperature of the air discharged to the window. control (12),
By recognizing the air temperature discharged to the window pane through the opening angle of the temp door 12 with respect to the cold air passage 12a, the opening angle of the temp door 12 with respect to the cold air passage 12a is set in advance. The air conditioner for a vehicle, characterized in that the temp door (12) is controlled by determining that the temperature of the air discharged to the window glass is equal to or less than the reference temperature when each abnormality occurs. 5. The method of claim 4,
The control unit 60,
When the mode for discharging air to the window pane is selected in the cooling condition of the interior of the vehicle, if the temperature of the air discharged to the window glass is lower than the reference temperature, the temp door 12 is opened in the cold air passage 12a by a preset opening angle. An air conditioner for a vehicle, characterized in that it controls the closing direction. 6. The method according to claim 4 or 5,
The control unit 60,
When the exhaust air temperature of the window pane exceeds the reference temperature, the interior of the vehicle is released from the cooling condition, the vehicle engine is turned OFF, or the air discharge mode is switched to a discharge mode other than the window pane, the above An air conditioner for a vehicle, characterized in that the temp door (12) is restored to its original state.

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