KR101309015B1

KR101309015B1 - Air conditioning system of automotive vehicle

Info

Publication number: KR101309015B1
Application number: KR1020100121113A
Authority: KR
Inventors: 박지훈; 정해석
Original assignee: 한라비스테온공조 주식회사
Priority date: 2010-12-01
Filing date: 2010-12-01
Publication date: 2013-09-16
Also published as: KR20120059717A

Abstract

The present invention relates to a vehicle air conditioner, by configuring the actual stop position of the door to be constantly controlled regardless of the rotation direction of the door, it is possible to constantly control the opening amount of the air passage regardless of the rotation direction of the door. It is aimed at being.
In order to achieve the above object, the present invention provides a vehicle air conditioner comprising a door for adjusting the opening amount of the air passage, and a door actuator for rotating the door clockwise or counterclockwise to a specific target position, Either of the clockwise or counterclockwise direction is built in the reference direction, and the door actuator is set so that the final rotational direction of the door entering the target position can always be set as the reference direction regardless of the initial rotational direction of the door. It is provided with a control part for controlling.

Description

Automotive air conditioning unit {AIR CONDITIONING SYSTEM OF AUTOMOTIVE VEHICLE}

The present invention relates to a vehicle air conditioner, and more particularly, by configuring the door's "actual stop position" to be controlled irrespective of the rotation direction of the door, the opening amount of the air passage to the rotation direction of the door The present invention relates to a vehicle air conditioner that can be constantly controlled regardless.

The vehicle air conditioner includes various doors for adjusting the amount of opening of the air passage, and these doors are driven by a door actuator.

As an example of a door and a door actuator, there are a Temp Door for adjusting the temperature of the air and a Door Actuator for operating the Temp door.

1 shows a view showing a temporal door 1 and a door actuator 3.

Temp door 1 (hereinafter referred to as "door") is generally composed of a flat type (Flat Type), the air conditioning case 5 is installed to enable the forward and reverse rotation movement about the rotating shaft (1a) do.

The door 1 opens and closes the air passage 7 while moving forward and reversely about the rotation shaft 1a. Therefore, the opening amount of the air passage 7 is adjusted.

The door actuator 3 is provided on the outer surface of the air conditioning case 5 and is connected to the rotating shaft 1a of the door 1.

The door actuator 3 is driven according to the " target position potential value " A1 of the controller 10 to rotate the door 1 forward and backward to a predetermined " target position " Therefore, the opening angle of the door 1 is adjusted.

On the other hand, the door actuator 3 outputs a "feedback potential value" A2, and the "feedback potential value" A2 at this time is input to the control unit 10.

Then, the control unit 10 in which the "feedback potential value" A2 is input compares the "feedback potential value" A2 with the "target position potential value" A1.

As a result of the comparison, when the potential values of both coincide, it is determined that the position of the door 1 has reached the "target position" B, and the current applied to the door actuator 3 is cut off. Then, the door actuator 3 stops working. In this way, the door 1 is fixed at the " target position "

On the other hand, the control unit 10 compares whether the "feedback potential value" A2 and the "target position potential value" A1 coincide, and if the potential value difference between them is within the "tolerance error" range, both potential values I think it matches.

The reason for this configuration is that the door actuator 3 cannot be accurately controlled to the "target position potential value" A1 due to mechanical and electrical inertia and errors.

Therefore, the "permissible error" is calculated in consideration of the mechanical and electrical errors and the inertia of the door actuator 3 and the resulting temperature change in the cabin, and then the electrical potential values are determined based on this.

Thus, even if the door actuator 3 is not precisely controlled to the "target position potential value" A1, it is recognized as being controlled to the "target position potential value" A1 if it is within the "tolerance error" range. As a result, it is possible to reduce the operation error phenomenon of the door actuator 3 which occurs as it is not accurately controlled to the "target position potential value" A1.

Generally, the "tolerance error" is usually calculated in consideration of the mechanical inertia of the door actuator 3. This is because most of the door actuators 3 are frequently rotated beyond the "target position potential value" A1 due to mechanical inertia.

And, the "tolerance error" is calculated in consideration of the mechanical inertia of the door actuator 3, and should be set to a small range so as not to affect the temperature in the vehicle interior. This is because the temperature in the vehicle cabin can be precisely controlled without a large error.

However, such a conventional air conditioner, as shown in Figure 2, while the door 1 is rotated in the clockwise direction (C) due to the over-rotation of the door 1 by the mechanical inertia of the door actuator (3) In the case of being controlled in the "target position" (B), and in the case of being controlled in the "target position" (B) while being rotated in the counterclockwise direction (D), the "actual stop position" (E) of both is different. Because of this disadvantage, there is a problem that the position of the door 1 is not precisely controlled.

That is, as described above, the door actuator 3 may deviate from the "target position potential value" A1 by mechanical inertia, and in this case, the door 1 passes the "target position" B while passing. Is more over-rotated.

And such over-rotation of the door 1 occurs in the clockwise (C) rotation of the door 1, and also occurs in the counterclockwise (D) rotation, so that the door 1 due to the over-rotation of the door (1) The "actual stop position" of (E) has a disadvantage that each differs depending on the direction of rotation of the door (1).

And because of these disadvantages, the gap t1 between the "actual stop positions" E occurring along the rotational direction of the door 1 is far more than the "tolerance error" t2 for the "target position" B. There is a problem that exceeds, there is a disadvantage that the opening amount of the air passage (7) is not precisely controlled because of this problem.

And because of these disadvantages there is a problem that the temperature in the cabin is not controlled according to a predetermined control value. As a result, a drawback has been pointed out that the heating and cooling efficiency in the interior of the vehicle is significantly reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a vehicle air conditioner capable of controlling the actual stop position of the door constantly regardless of the rotation direction of the door.

It is another object of the present invention to configure the actual stop position of the door to be controlled irrespective of the rotational direction of the door, so that the air conditioning for the vehicle that can control the amount of opening of the air passage constant regardless of the rotational direction of the door To provide a device.

Still another object of the present invention is to configure the air passage opening degree so as to be controlled irrespective of the rotational direction of the door, so that the temperature in the vehicle interior can be precisely controlled according to a preset control value. An object of the present invention is to provide a vehicle air conditioner capable of keeping the interior comfortable at all times.

In order to achieve this object, the vehicle air conditioner of the present invention includes a door for adjusting the opening amount of the air passage and a door actuator for rotating the door to a specific target position while rotating the door clockwise or counterclockwise In the vehicle air conditioner, any one of a clockwise direction and a counterclockwise direction is built in the reference direction, and the final rotational direction of the door entering the target position is always the reference direction regardless of the initial rotational direction of the door. To be set to, characterized in that it comprises a control unit for controlling the door actuator.

Preferably, the direction of rotation of the door further comprises a rotation direction detection means for detecting whether the reference direction or the opposite direction, the control unit, the first rotation direction of the door input from the rotation direction detection means is a reference Direction, the door is continuously controlled in the reference direction to rotate to the target position, and when the initial rotation direction of the door input from the rotation direction sensing means is in the opposite direction, the door is continuously rotated in the opposite direction. After the over-rotation from the target position, the door actuator is controlled to rotate to the target position while being rotated back to the reference direction.

According to the air conditioner for a vehicle according to the present invention, the final rotational direction of the door entering the target position is always controlled regardless of the initial rotational direction of the door. Therefore, there is an effect that the "actual stop position" of the door can be constantly controlled regardless of the rotation direction of the door.

In addition, the "actual stop position" of the door can be controlled constantly regardless of the rotational direction of the door, so that the error occurring between the "actual stop position" and the "target position" is always constant regardless of the rotational direction of the door. There is.

In addition, since the error occurring between the "actual stop position" and the "target position" is always constant regardless of the direction of rotation of the door, the range of the error occurring between the "actual stop position" and the "target position" also means "permissible error." Do not exceed As a result, the opening amount of the air passage can be controlled constantly regardless of the rotational direction of the door.

In addition, since the opening amount of the air passage can be controlled constantly regardless of the rotation direction of the door, the temperature in the vehicle interior can be precisely controlled according to a preset control value, thereby keeping the interior of the vehicle comfortable at all times. It has an effect.

1 is a sectional view showing a conventional automotive air conditioner,
2 is a view showing a state in which a door installed in a conventional air conditioner for a vehicle deviates from a target position according to a rotation direction;
3 is a cross-sectional view showing a vehicle air conditioner according to the present invention;
4 is a view for explaining the driving mechanism of the door installed in the vehicle air conditioner of the present invention,
5 and 6 is an operation diagram showing an operation example of the vehicle air conditioner according to the present invention,
7 is a flowchart showing an operation example of the 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, a car air conditioner according to the present invention will be briefly described with reference to FIGS. 3 and 4. FIG.

The vehicle air conditioner includes various doors 1 for adjusting the opening amount of the air passage 7, and these doors 1 are driven by the door actuators 3.

The door 1 is installed in the air conditioning case 5 so as to be rotatable about the rotary shaft 1a and opens and closes the air passage 7 while rotating around the rotary shaft 1a. Therefore, the opening amount of the air passage 7 is adjusted.

As shown in FIG. 4, the "target position potential value" A1 of the control unit 10 is applied to the motor unit 3a of the door actuator 3, where the motor unit 3a is applied to the " The door 1 is controlled in accordance with the target position potential value "A1. Thus, the door 1 can be rotated to the "target position" (B).

On the other hand, the door actuator 3 is equipped with the carbon resistance part 3b. The carbon resistor part 3b outputs the "feedback potential value" A2 which is the current rotation position of the motor part 3a, and the output "feedback potential value" A2 is input to the control unit 10.

This is because the door actuator 3 cannot be accurately controlled to the "target position potential value" A1 due to mechanical and electrical inertia and errors.

Next, the features of the vehicle air conditioner according to the present invention will be described in detail with reference to FIGS. 3 to 6.

First, referring to Figure 3, the air conditioning apparatus of the present invention, the rotation direction detecting means 20 for detecting the rotation direction of the door (1).

The rotation direction detecting means 20 is a kind of rotation sensor installed on the rotation shaft 1a of the door 1, and is the rotation direction of the door 1, that is, clockwise direction C or counterclockwise direction D. It detects whether the rotation, and inputs the detected "door rotation direction data" (F) to the control unit 10.

In some cases, the rotation direction detecting means 20 may be installed on a rotating shaft (not shown) of the door actuator 3. Therefore, the rotation direction of the door 1 may be sensed according to the rotation direction of the rotation axis of the door actuator 3.

As another example of the rotation direction detecting means 20, the "feedback potential value" (A2) and the "target position potential value" (A1) of the door actuator 3 is compared to detect the rotation direction of the door (1). It may be.

That is, since the "feedback potential value" A2 output from the door actuator 3 means the current rotation position of the door 1, the "feedback potential value" A2 which is the current rotation position of the door 1 is determined. Subtracted by the "target position potential value" A1 applied to the door actuator 3 and comparing whether the value is larger or smaller than "0", the rotation direction of the door 1 is clockwise (C) or half It is possible to detect whether the clockwise direction (D).

The rotation direction of the door 1 is detected by the controller 10 by comparing the "feedback potential value" A2 with the "target position potential value" A1.

And the air conditioner of this invention is equipped with the comparison part 30. FIG. The comparator 30 is built in the control unit 10. When the "door rotation direction data" F is input from the rotation direction sensing means 20, the input "door rotation direction data" F is input in advance. Compare whether or not the set "reference direction", for example clockwise direction (C).

On the other hand, the control unit 10, as a result of the comparison in the comparison unit 30, the rotation direction of the door 1 input from the rotation direction detecting means 20 is a predetermined "reference direction", that is, clockwise direction (C) If it is determined as shown in Fig. 5, the door actuator 3 is controlled in the clockwise direction C in accordance with the "target position potential value" A1. Thus, the door 1 is rotated to the "target position" (B).

On the other hand, if it is determined that the rotational direction of the door 1 input from the rotational direction detecting means 20 is not a preset "reference direction", that is, as shown in FIG. 6, the counterclockwise direction D is If judged to be, the door actuator 3 is controlled to a potential value larger than the "target position potential value" A1. Thus, the door 1 is rotated over (G) from the "target position" (B).

Then, the door actuator 3 is controlled again in the clockwise direction C in accordance with the original " target position potential value " A1. In this way, the overrotated door 1 is controlled to the " target position " B while being rotated clockwise again.

On the other hand, the "reference direction" built in the comparison unit 30 is preferably set to the clockwise direction (C). Of course, in some cases, the "reference direction" may be set to the counterclockwise direction D.

According to the present invention having such a configuration, the final rotational direction of the door 1 entering the "target position" B is always controlled irrespective of the initial rotational direction of the door 1. Thus, as shown in Figs. 5 and 6, the "actual stop position" E of the door 1 can always be constantly controlled regardless of the rotational direction of the door 1.

In addition, since the "actual stop position" of the door 1 can be controlled constantly regardless of the rotation direction of the door 1, an error occurring between the "actual stop position" E and the "target position" B Also, t3 is always constant regardless of the rotational direction of the door 1.

In addition, since the error t3 occurring between the "actual stop position" (E) and the "target position" (B) is always constant regardless of the rotation direction of the door 1, the "actual stop position" (E) and " The range of the error t3 occurring between the target positions "B also does not exceed the" permissible error "t2. Thereby, the opening amount of the air passage 7 can be controlled constantly and precisely regardless of the rotation direction of the door 1.

In addition, since the opening amount of the air passage 7 can be controlled constantly and precisely regardless of the rotational direction of the door, the temperature in the vehicle compartment can be precisely controlled according to a preset control value. This makes it possible to keep the interior of the vehicle comfortable at all times.

Next, an operation example of the present invention having such a configuration will be described with reference to FIGS. 3 and 5, 6, and 7.

First, referring to FIGS. 3 and 7, in a state in which the air conditioner 1 is turned on (S101), the "target position" B of the door 1 is set (S103).

Then, the control unit 10 outputs the "target position potential value" A1 corresponding to the "target position" B to control the door actuator 3 (S105). In this way, the door 1 is controlled in the "target position" (B) direction.

On the other hand, in the process of controlling the door 1 in the "target position" (B) direction, the control unit 10 has a rotational direction of the door 1 "reference direction" (C), that is, "clockwise" (C) The recognition is judged (S107).

If the determination result is "reference direction" (C), as shown in Fig. 5, the control unit 10 moves the door actuator 3 in accordance with the "target position potential value" (A1) "reference direction" (C). That is, the control continues in the "clockwise" (C) (S109). Thereby, the door 1 is rotated to the "target position" B (S111).

On the other hand, as a result of the determination, if the rotation direction of the door 1 is not the "reference direction" (C) (S107-1), that is, the "counterclockwise direction" (D) opposite to the "reference direction" (C), The control unit 10 applies a potential value larger than the "target position potential value" A1 to the door actuator 3 (S113). Then, the door 1 is over rotated from the "target position" B, as shown in Fig. 6 (S115).

When the over-rotation of the door 1 is completed, the controller 10 applies the door actuator 3 to the original "target position potential value" A1 to the original "target position potential value" A1. Accordingly, control is again performed in the "reference direction" C, that is, the "clockwise direction" C (S117).

Then, the door 1 over rotated from the "target position" B is controlled to the "target position" B while being rotated in the clockwise direction C (S111). And the door 1 controlled in this way will have the same position as the door 1 (refer FIG. 5) rotated from the initial "clockwise" (C).

In this way, the door 1 is always rotated to a constant " target position " B regardless of the initial rotation direction. And, even when overrotated from the "target position" B due to the mechanical inertia of the door actuator 3, the "actual stop position" E always remains the same.

Therefore, the error t3 occurring between the "actual stop position" E and the "target position" B is also always constant regardless of the rotational direction of the door 1. As a result, the opening amount of the air passage 7 can be controlled constantly regardless of the rotational direction of the door 1. Thus, the temperature in the vehicle compartment can be precisely controlled according to a preset control value.

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: Door 3: Door Actuator
5: air conditioning case 7: air passage
10: control unit 20: rotation direction detection means
30: comparison unit A1: target position potential value
A2: Feedback potential value B: Target position
C: clockwise, reference direction D: counterclockwise, reverse direction
E: Actual stop position F: Door rotation direction data

Claims

A door 1 for adjusting the opening amount of the air passage 7 and a door actuator for rotating the door 1 to a specific target position B while rotating the door 1 clockwise or counterclockwise (D). A vehicle air conditioner comprising (3),
One of the clockwise direction (C) and the counterclockwise direction (D) is built in the reference direction, and the rotational direction of the door 1 entering the target position B is the first direction of the door 1. And a control unit (10) for controlling the door actuator (3) so that it can always be set in the reference direction regardless of the rotation direction.

The method of claim 1,
Further comprising a rotation direction detecting means 20 for detecting whether the initial rotation direction of the door 1 is the reference direction or the opposite direction,
When the initial rotation direction of the door 1 input from the rotation direction detecting means 20 is the reference direction, the control unit 10 continuously controls the door 1 in the reference direction to control the target position ( Rotate to B),
When the initial rotation direction of the door 1 input from the rotation direction detecting means 20 is in the opposite direction, the door 1 is continuously rotated in the opposite direction to over-rotate from the target position B, and And the door actuator (3) so as to be rotated to the target position (B) while being rotated back to the reference direction.

The method of claim 2,
The door actuator (3) inputs a feedback potential value (A2) to the control unit (10) to provide a current rotational position of the door (1);
The control section (10) applies a target position potential value (A1) to the door actuator (3) to control the door (1) to the target position (B);
The rotation direction detecting means 20,
The feedback potential value A2 input from the door actuator 3 is subtracted by a target position potential value A1 applied to the door actuator 3 to compare whether the value is greater than or less than zero. (1) the control unit (10) for determining whether the rotation direction is the reference direction or the opposite direction.

The method of claim 2,
The rotation direction detecting means 20,
And a rotation sensor for detecting whether the rotation direction of the door (1) is the reference direction or the opposite direction according to the rotation direction of the rotation axis of the door actuator (3).