KR20150021387A - Air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to an air conditioning system for automotive vehicles. The present invention is configured to enable to restrict the introduction of the outside air although a user selects an air mode when the outdoor of an automotive vehicle in a high temperature environment, thereby increasing the temperature in the automotive vehicle due to the introduction of the outside air in a high temperature environment and preventing the cooling performance in the automotive vehicle of from being fallen off. The air conditioning system for automotive vehicle in order to achieve the purpose comprises an intake door which opens the door of an outside air inlet while rotating to an outside air mode location in an outside air mode and opens the door of an inside air inlet while rotating to an inside air mode location in an inside air mode to selectively introduce the outside air or inside air. The present invention comprises: a high temperature environment discriminating means which determines whether the interior of the automotive vehicle is in the high temperature environment; an outside air mode conversion sensing means whether an air inhale mode is converted to the outside air mode; and a control unit which controls the introduction of the outside air by forcibly controlling the intake door to an inside air mode while entering to a forced inside air mode when high temperature environment discriminating means determined that the outdoor of the automotive vehicle is in the high temperature environment and the outside air mode conversion sensing means sensed the air inhale mode is converted to the outside air mode if the current temperature of the interior of the automotive vehicle increases to at least a predetermined specific temperature value of than the temperature of the interior of the automotive vehicle at an outside air mode conversion point.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioning system for an automobile,

The present invention relates to a vehicle air conditioner, and more particularly, to a vehicular air conditioner which is capable of restricting introduction of outside air even when a user selects an outside air mode in a high temperature environment, The present invention relates to a vehicle air conditioner capable of preventing a temperature rise of a room and a cooling performance deterioration of the interior of the vehicle caused thereby.

The automobile is provided with an air conditioner for cooling and heating the inside of the car.

1, an air conditioning case 1 is provided with an intake door 3, an air blower 5, an evaporator 7 for an air conditioner, Respectively.

The intake door 3 selectively opens the outside air inlet 3a or the inside air inlet 3b while rotating between the outside air mode position A and the inside air mode position B,

Particularly, in the "outside air mode", the outside air inlet 3a is opened while being rotated to the outside air mode position A, and in the "inside air mode", the inside air inlet 3b is rotated to the inside air mode position B, Lt; / RTI > Thus, the outside air or the inside air can be selectively introduced.

The blower 5 sucks the outside air or the inside air through the inside and outside air inlets 3a and 3b and then blows the sucked inside and outside air into the inside passage 1a of the air conditioner case 1. [

The evaporator (7) cools the air blown from the blower (5) and supplies it to the passenger compartment. Therefore, the interior of the vehicle is cooled.

However, in the conventional air conditioner, when the user operates the outside air mode switch 9a of the controller 9 to switch the air suction mode to the "outside air mode" while the air conditioner is ON, The hot air of the air is introduced into the passenger compartment of the passenger compartment and the comfort of the passenger compartment is deteriorated.

In particular, when the outside of the car is in a high temperature environment, when the suction mode of the air is switched to the "outside mode ", a large amount of outside air of high temperature flows into the car interior. As a result, it is pointed out that the comfort of the interior of the passenger compartment is remarkably deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle air conditioner capable of restricting the introduction of outside air even when the user selects the outside air mode in a high temperature environment There is.

It is another object of the present invention to provide an air conditioner which is capable of restricting the introduction of outside air even when the user selects the outside air mode in a high temperature environment, Which is capable of preventing a cooling performance deterioration phenomenon of a vehicle.

It is a further object of the present invention to provide a vehicle air conditioning system capable of preventing a rise in the temperature of a vehicle interior due to the introduction of high temperature outside air and a deterioration in cooling performance of the interior of the vehicle, Device.

In order to achieve the above object, the air conditioning system for a vehicle according to the present invention is characterized in that, in the outside air mode, the outside air inlet is opened while being rotated to the outside air mode position, A vehicle air conditioning system comprising an intake door (Intake Door) for selectively introducing outside air or inside air, comprising: high-temperature environment discrimination means for discriminating whether the outside of the vehicle is in a high-temperature environment; An outside air mode switching sensing means for sensing whether the air intake mode is switched to the outside air mode; The high temperature environment discrimination means determines that the outside of the car is in a high temperature environment and in a state in which the air intake mode switching sensing means senses that the air intake mode is switched to the outside air mode, And a control unit for forcibly controlling the intake door to the inside mode position while entering the forced enforcement mode when the temperature of the indoor unit is raised to a temperature value of a predetermined size that is greater than a predetermined temperature.

Preferably, the air conditioner further includes a timer which is determined to be a high-temperature environment outside the vehicle, measures a time based on a time point at which the air intake mode is switched to the outside air mode, and measures an elapsed- Wherein the control unit forcibly controls the intake door to the inside mode position while entering the forced enforcement mode when the outside air mode switching elapsed time in the high temperature environment counted by the timer exceeds a preset reference elapsed time do.

According to the vehicle air conditioner of the present invention, since the outside of the car is in a high temperature environment and the temperature of the inside of the car is raised when the user selects the outside air mode, introduction of outside air is blocked. The introduction of outside air can be restricted even if the user selects the outside air mode.

In addition, when the outside temperature of the car is high, the introduction of outside air is restricted even if the user selects the outside air mode. Therefore, the temperature rise of the car interior due to the introduction of high temperature outside air and the deterioration of cooling performance There is an effect that can be done.

In addition, since the temperature rise of the interior of the vehicle due to the introduction of high-temperature outside air and the consequent deterioration of the cooling performance of the interior of the interior of the vehicle can be prevented, the comfort of the interior of the vehicle can be remarkably improved.

1 is a view showing a configuration of a conventional automotive air conditioner,
2 is a view showing a configuration of a vehicle air conditioner according to the present invention,
3 and 4 are flow charts showing an operation example of a vehicle air conditioner according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail with reference to the accompanying drawings (the same components as those in the prior art are denoted by the same reference numerals).

First, before examining the characteristic parts of the vehicle air conditioner according to the present invention, a vehicle air conditioner will be described with reference to FIG.

The vehicle air conditioner includes an air conditioner case 1 and an intake door 3, a blower 5 and an air conditioner evaporator 7 are installed inside the air conditioner case 1.

The intake door 3 selectively opens the outside air inlet 3a or the inside air inlet 3b while rotating between the outside air mode position A and the inside air mode position B,

Particularly, in the "outside air mode", the outside air inlet 3a is opened while being rotated to the outside air mode position A, and in the "inside air mode", the inside air inlet 3b is rotated to the inside air mode position B, Lt; / RTI > Thus, the outside air or the inside air can be selectively introduced.

The blower 5 sucks the outside air or the inside air through the inside and outside air inlets 3a and 3b and then blows the sucked inside and outside air into the inside passage 1a of the air conditioner case 1. [

The evaporator (7) cools the air blown from the blower (5) and supplies it to the passenger compartment. Therefore, the interior of the vehicle is cooled.

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

Referring first to FIG. 2, the vehicle air conditioner of the present invention includes a high-temperature environment discriminating means 10 for discriminating whether or not the temperature environment of the outside of the car is a high-temperature environment.

The high temperature environment discriminating means 10 includes an outside temperature sensor 12 for detecting the outside temperature and a microcomputer for determining whether the outside temperature of the outside of the car is a high temperature environment according to the outside temperature inputted from the outside temperature sensor 12. [ (14).

The microcomputer 14 is equipped with a microprocessor. When the outside air temperature data is input from the outside air temperature sensor 12, it is determined whether the inputted outside air temperature is equal to or higher than a predetermined "reference temperature" ", It is determined that the outside of the vehicle is in a high temperature environment and" high temperature environment signal S1 "is outputted.

Here, the "reference temperature" built in the microcomputer 14 is preferably set to 40 ° C. This is because, in general, when the temperature is 40 ° C or higher, it is classified into a high temperature environment.

It is because the cooling efficiency of the air conditioner evaporator 7 is drastically lowered when the outside air of 40 ° C or more flows, and as a result, the temperature of the car interior rapidly increases.

Particularly, in a tropical region such as Africa, Central and South America, Southeast Asia, etc., the daytime air temperature frequently rises to 40 ° C or higher. When the outside air of 40 ° C or higher flows into the passenger compartment, The temperature of the vehicle interior has risen sharply.

On the other hand, when the outside air temperature input from the outside air temperature sensor 12 is lower than the "second reference temperature" lower than the "reference temperature ", the microcomputer 14 determines that the current outside of the car is not a high temperature environment Temperature environment signal S1 "is erased (erased).

Here, the "second reference temperature" built in the microcomputer 14 is preferably set to 35 deg. This is because cooling efficiency of the air conditioner evaporator 7 was not lowered when ambient air of 35 ° C or lower was introduced, and as a result, the temperature of the vehicle interior did not rise sharply.

Referring again to FIG. 2, the air conditioner of the present invention includes an outside air mode change detection means 20 for detecting whether or not the air intake mode is switched from the "inside air mode" to the "outside air mode".

The outside air mode switching detection means 20 is constituted by an outside air mode switch 9a of the controller 9. [

When the user changes the intake mode of the air from the "stomping mode" to the "outside mode" by using the user's external air mode switch 9a, it outputs the "outside mode switching signal S2" do.

The air conditioner of the present invention includes a control unit (30). The control unit 30 is equipped with a microprocessor and includes a memory unit 32 and a timer 34.

The memory unit 32 stores the temperature of the vehicle interior inputted by the inside air temperature sensor 36 at specific time intervals. For example, the temperature of the vehicle interior inputted from the inside temperature sensor 36 is stored at intervals of one second (Sec).

When the "high-temperature environment signal S1" and the "outside-air mode switching signal S2" are simultaneously input from the high-temperature environment judging means 10 and the outside-air mode switching detecting means 20, Quot; signal S1 "and the" outside-air mode switching signal S2 ". Therefore, the "outside air mode switching elapsed time" in a high temperature environment is measured.

On the other hand, when the "high-temperature environment signal S1" and the "outside-air mode switching signal S2" are simultaneously input from the high-temperature environment judging means 10 and the outside-air mode switching detecting means 20, (Hereinafter referred to as "outside air mode changeover point indoor air temperature") at the time when the environmental signal S1 and the outside air mode switching signal S2 are inputted.

The control unit 30 compares the detected "ambient temperature changeover point indoor temperature" with the detected current vehicle room temperature (hereinafter referred to as "current vehicle room temperature") input from the inside temperature sensor 36. [ Particularly, a judgment is made as to whether or not the "current car room temperature" For example, it is judged whether or not the temperature rises to 1 ° C or more.

As a result of the determination, if the "current car room temperature" input from the inside temperature sensor 36 has risen by 1 deg. C or more from the "outside air mode switching point of time car room temperature ", the controller 30, It judges that the temperature rises sharply and enters the "compulsory betting mode".

The control unit 30 that has entered the "forced enforcement mode" outputs the "control signal S3" to force the intake door 3 from the "outside air mode position A" to the "inside air mode position B" . Therefore, the outer air inlet 3a is forcibly closed and the inner air inlet 3b is opened.

Thereby, introduction of high-temperature outside air is forcibly limited. As a result, the temperature rise of the interior of the vehicle due to the introduction of high temperature outside air and the deterioration of the cooling performance of the interior of the vehicle due to the increase in temperature are prevented. This improves the comfort of the interior of the car.

On the other hand, when the "current car room temperature" of the inside temperature sensor 36 does not rise above the specific size temperature beyond the "outside-air mode change-point-in-time car room temperature" When the "outside air mode switching elapsed time" in the outside air mode exceeds the preset "reference elapsed time", for example, when the time exceeds 5 minutes, the temperature of the car room may rise sharply due to the introduction of high- And enters the "forced enforcement mode ".

The control unit 30 that has entered the "forced enforcement mode" outputs the "control signal S3" to force the intake door 3 from the "outside air mode position A" to the "inside air mode position B" . Therefore, the outer air inlet 3a is forcibly closed and the inner air inlet 3b is opened.

As a result, introduction of high-temperature outside air is forcibly restricted, thereby preventing a rise in the temperature of the interior of the vehicle due to the introduction of high-temperature outside air and a deterioration in the cooling performance of the interior of the vehicle.

2, the control unit 30 controls the high-temperature environment discriminating means 10 in the state of entering the "forced enforcement mode" and forcibly controlling the intake door 3 to the "energization mode position B" Temperature environment signal S1 "inputted from the outdoor unit 100 is erased (erased), it is determined that the outside of the car is not in the high-temperature environment.

Then, in response to this judgment, the intake door 3 is released from the "enforced mode" and returns the intake door 3 to the original "outside air mode position (A)". Therefore, the introduction of outside air into the car interior is permitted.

The control unit 30 controls the intake mode switch 9b of the controller 9 so that the air intake mode is switched to the air intake mode when the user has forcibly controlled the intake door 3 to the " When "bet mode" is selected, it is released from "forced mode".

Then, the control section 30 released from the "forced enforcement mode " continues to keep the intake door 3 at the " bet mode position B"

The control unit 30 controls the intake door 3 so that the "current vehicle room temperature" input from the inside air temperature sensor 36 is changed to the "outside air mode changeover The temperature of the inside of the room is lower than the temperature of the inside of the room.

As a result of the judgment, it is judged that the temperature of the passenger compartment is sufficiently lowered without being influenced by the high temperature outside air when the "current passenger compartment temperature" Is released.

Then, the control unit 30 released from the "forced enforcement mode" returns the intake door 3 to the original "outside air mode position A". Thus, the introduction of fresh air is permitted.

On the other hand, the control unit 30 directly processes the outside air temperature data sensed by the outside air temperature sensor 12 in place of the microcomputer 14 of the high temperature environment discriminating means 10 to determine whether or not the outside of the car is a high temperature environment You can also identify yourself.

In this case, since the controller 30 plays the role of the microcomputer 14, the microcomputer 14 is not necessary. Therefore, the number of parts can be reduced, and the cost reduction effect can be expected.

Next, an operation example of the present invention having such a configuration will be described with reference to Figs. 2 to 4. Fig.

First, in a state in which the air conditioner is ON (S101), the control unit 30 determines whether the temperature of the outside of the car is equal to or higher than the "reference temperature" (S103). For example, it is determined whether or not the outdoor temperature is 40 ° C or higher.

As a result of the determination, if the temperature is equal to or higher than the "reference temperature ", the control unit 30 determines that the outside of the vehicle is in a high temperature environment and determines again whether the user has switched the air intake mode to the " outside air mode"

As a result of the determination, if the user has switched to the "outside air mode ", the control unit 30 determines that the high temperature outside air is introduced into the car interior and detects the car room temperature at the & (S107).

The control unit 30 compares the detected "outside air mode changeover point indoor temperature" with the "current vehicle room temperature" (S109) whether or not the temperature of the outdoor unit is higher than the predetermined temperature? For example, it is judged whether or not the temperature rises to 1 ° C or more.

As a result of the determination, if the "current car room temperature" has risen by 1 deg. C or more from the "outside air mode switching time drift room temperature ", the control unit 30 determines that the car room temperature is rapidly increased due to the introduction of the high- Quot; enforcement mode "(S111).

Then, the control unit 30, which has entered the "forced enforcement mode", forcibly controls the intake door 3 to the "energization mode position B" (S113).

Then, the outer air inlet 3a is closed and the air inlet opening 3b is opened. As a result, introduction of high-temperature outside air is blocked. As a result, the temperature rise of the interior of the vehicle due to the introduction of high temperature outside air and the deterioration of the cooling performance of the interior of the vehicle due to the increase in temperature are prevented. Accordingly, the comfort of the interior of the passenger compartment is improved.

On the other hand, the control unit 30 determines whether or not the temperature of the outside of the vehicle has fallen below the "second reference temperature" while the intake door 3 is forcibly controlled to the "inside mode position B" (S115) . For example, it is judged whether or not the temperature of the outside of the car has dropped to 35 DEG C or less.

As a result of the determination, if the temperature has dropped below the "second reference temperature ", the control unit 30 determines that the outside of the car is not in the high temperature environment and is released from the forced enforcement mode (S117).

Then, the control section 30 released from the "forced enforcement mode" returns the intake door 3 to the original "outside air mode position A" (S119). Therefore, the introduction of outside air into the car interior is permitted.

On the other hand, if it is determined in step S115 that the temperature of the outside of the vehicle has not dropped below the "second reference temperature" (S115-1), the control unit 30 sets the air intake mode to " (Step S121).

As a result of the determination, if the user selects the "bet mode", the control unit 30 is released from the "forced mode" (S123). The control unit 30 released from the "forced enforcement mode" continuously keeps the intake door 3 at the "energization mode position B" in accordance with the user's selection (S125).

On the other hand, if the user does not select the "bet mode" (S121-1) in the step S121, the control unit 30 judges whether or not the "current car room temperature" is equal to or lower than the " (S127).

The control unit 30 determines that the interior of the vehicle is sufficiently lowered without being affected by the high temperature outside air, and the "forced airing mode" (S129).

Then, the control unit 30 released from the "forced enforcement mode" returns the intake door 3 to the original "outside air mode position A" (S131). Thus, the introduction of fresh air is permitted.

According to the present invention having such a configuration, when the outside of the car is in a high-temperature environment and when the temperature of the inside of the car is increased while the user selects the outside air mode, introduction of outside air is blocked. The introduction of outside air can be restricted even if the user selects the outside air mode.

In addition, when the outside temperature of the car is high, the introduction of outside air is restricted even if the user selects the outside air mode. Therefore, the temperature rise of the car interior due to the introduction of high temperature outside air and the deterioration of cooling performance can do.

In addition, since the temperature rise of the interior of the vehicle due to introduction of high-temperature outside air and the consequent deterioration of the cooling performance of the interior of the interior of the vehicle can be prevented, the comfort of the interior of the vehicle can be remarkably improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

1: Air conditioning case (Case 3): Intake door (Intake door)
3a: Outer air inlet 3b: Outer air inlet
5: Blower 7: Evaporator
9: Controller 9a: Outdoor mode switch (Switch)
9b: Emergency mode switch 10: High temperature environment discriminating means
12: Outside temperature sensor 14: Micom
20: Ambient mode switching detection means 30:
32: memory section 34: timer (Timer)
36: Emitting temperature sensor S1: High temperature environment signal
S2: Outdoor mode switching signal S3: Control signal

Claims (6)

The outside air inlet 3a is opened while being rotated to the outside air mode position A in the outside air mode and the inside air inlet 3b is opened while being rotated to the inside air mode position B in the inside air mode, A vehicle air conditioning system comprising an intake door (3) for selectively introducing air,
A high-temperature environment discriminating means 10 for discriminating whether the outside of the car is a high-temperature environment;
An outside air mode switching sensing means (20) for sensing whether the air intake mode is switched to the outside air mode;
The high temperature environment judging means 10 judges that the outside of the car is in a high temperature environment and in a state in which the air intake mode switching sensing means 20 senses that the air intake mode is switched to the outside air mode, The air conditioning mode is forcibly controlled to enter the forced air mode and the intake door 3 is forced to the air conditioning mode position B, And a control unit (30) for limiting the air conditioner. The method according to claim 1,
Further comprising a timer (34) which is judged to be a high temperature environment of the car outside and counts time based on a point of time when the air intake mode is switched to the outside air mode, and measures elapsed time of the outside air mode change in the high temperature environment,
When the elapsed time elapsing from the high temperature environment counted by the timer 34 exceeds the reference elapsed time set in advance by the timer 34, the control unit 30 causes the intake door 3 to enter the forced- To the mode position (B). 3. The method of claim 2,
The control unit (30)
When the high temperature environment discriminating means 10 judges that the outside of the car is not in a high temperature environment in a state where the intruder mode is entered and the intake door 3 is forcibly controlled to the inside mode position B, And returns the intake door (3) to the original outside air mode position (A) while being released from the forced air mode. The method of claim 3,
The control unit (30)
When the user enters the forced compulsory mode and forcibly controls the intake door (3) to the forced air mode position (B), when the user selects the air intake mode as the forced air mode, And controls the door (3) to the air conditioning mode position (B). 5. The method of claim 4,
The control unit (30)
When the current vehicle interior temperature drops below the vehicle interior temperature at the outside air mode switching time in the state in which the intruder mode is entered and the intake door 3 is forcibly controlled to the inside mode position B, And returns the intake door (3) to the original outdoor mode position (A) while being released from the stall mode. 6. The method according to any one of claims 1 to 5,
The high-temperature environment judging means (10)
An outdoor temperature sensor 12 for sensing an outdoor air temperature;
When the outside air temperature input from the outside air temperature sensor 12 is equal to or higher than a predetermined reference temperature, it is determined that the outside of the vehicle is in a high temperature environment, and when the outside air temperature input from the outside air temperature sensor 12 is lower than the reference temperature And a microcomputer (14) for determining that the outside of the vehicle is not in a high temperature environment when the temperature is lower than a reference temperature of the air conditioner.

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