KR101309195B1 - The mix mode control method in air conditioner for vehicle - Google Patents

Abstract

The present invention relates to a control method of the mixed mode to discharge the air by adjusting the air volume distribution ratio of the defrost door and the floor door by rotating the cam by the drive of the actuator in a vehicle air conditioner, the air volume distribution ratio of the defrost door and floor door Setting a plurality of mix mode types according to the up and down temperature difference generated by the step; Setting a cam position for adjusting a flow rate distribution ratio of the defrost door and the floor door so that the set up and down temperature difference for each mix mode type is generated; If any one of the selected mix mode types is selected, driving the actuator to control the cam to rotate to a setting position of a corresponding type has the advantage of providing convenience for use and improving satisfaction with the product. .

Air Conditioning Units, Mix Mode, Cam

Description

Mix mode control method of vehicle air conditioner {THE MIX MODE CONTROL METHOD IN AIR CONDITIONER FOR VEHICLE}

1 is a cross-sectional view schematically showing the internal structure of a general vehicle air conditioner.

FIG. 2 is a front view showing a cam which is one of components for driving doors constituting the air conditioning apparatus shown in FIG. 1; FIG.

3 is a flowchart illustrating a method of controlling a mix mode of an air conditioning apparatus according to the present invention.

4 is a view for explaining the air volume distribution ratio for each mix mode according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

2: case 4: evaporator

6: heater core 8: temperature control door

10,12,14: branch duct 16,18,20: branch door

25: Cam

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a control method of a mixed mode in which a cam is rotated by driving an actuator in a vehicle air conditioner to adjust air volume distribution ratios of a defrost door and a floor door to discharge air.

In general, a vehicle air conditioner is a device that cools or heats a vehicle interior by introducing air from the outside of a vehicle or inside a vehicle to heat or cool the air to blow into the interior of the vehicle, and inside the case, air blown by a blower. A flow path is formed, and on the flow path, heat exchangers for heating or cooling blown air and cold and warm air heated or cooled while passing through the heat exchangers are distributed to each part of the vehicle interior to guide the blowing. Several doors are installed.

1 is a cross-sectional view schematically showing an internal structure of a general vehicle air conditioner, and FIG. 2 is a front view showing a cam which is one of components for driving doors constituting the air conditioner shown in FIG. 1.

The air conditioner of FIG. 1 shows an internal structure of a semi-center type in which an evaporator for cooling air cooling and a heater for heating are formed as one unit.

As shown in FIG. 1, the case 2 of the air conditioning apparatus is introduced into the case 2 from the outside or the interior of the vehicle by an air blower (not shown) through an internal and outdoor air selection door (not shown), and then the evaporator ( 4) a temperature control door 8 for selectively inducing air blown through the heater core 6, and each branch duct communicating air selectively passing through the heater core 6 with a specific position in the vehicle interior There are a plurality of doors that selectively distribute the air to the specific flow paths such as the branch doors 16, 18, and 20 and selectively distribute the air to the specific flow paths such as the branch doors 16, 18, and 20. .

In addition, a driving means such as an actuator (not shown) that is supplied with power to operate the temperature control door 8 and the branch doors 16, 18, and 20 is installed. These doors operate in conjunction with the operation switch as the driver operates the air conditioner control operation switch (not shown) of the instrument panel, and adjusts the ratio of the air flow rate between the air passing through the heater core 6 and the air not passing through the door. Or it serves to guide to the branch duct (10, 12, 14) connected to a specific discharge port in the vehicle interior.

The temperature control door 8 is installed to be switched between the cold air flow passage 19 that does not pass through the heater core 6 and the warm flow passage 21 that passes through the heater core 6 so as to be opened and closed. The fermentation serves to adjust the temperature of the air discharged to the indoor side by adjusting the ratio of cold and hot air blowing.

Vent mode set at the time of cooling and heating by the branch doors 16, 18, and 20 installed in the branch ducts 10, 12, 14 as described above, bi-level mode at the time of mixing the heating and cooling, and mainly set only at the time of heating The floor mode, the mix mode set at the time of heating and defrosting, and the defrost mode set only at the defrosting of windshield glass, are set. This will be described in more detail with reference to FIG. 2.

Each mode can be changed in the order of vent mode, bi-level mode, floor mode, mix mode, and defrost mode by driving the actuator in the forward direction and rotating the cam 25 shown in FIG. 2 clockwise. Can be changed in the order of the defrost mode, the mix mode, the floor mode, the bi-level mode, and the vent mode by rotating the cam 25 shown in FIG.

On the other hand, when the actual vehicle heater test due to the common use of HVAC (heating, ventilating, and air conditioning), the upper and lower temperature difference regulations are usually set in the mixed mode to control the air volume distribution ratio of the defrost door and the floor door to discharge the air. The temperature at the point where it is located is set relatively lower than the temperature at the point where the floor door is located.

However, in the conventional air conditioner mix mode, the cam 25 is fixed at one set position, and thus the air volume distribution ratio of the defrost door and the floor door is always constant. If the temperature difference rules are different, there is a problem in that the cam itself needs to be replaced to change the air volume distribution ratio of the defrost door and the floor door.

Accordingly, the present invention is to solve the above problems, even when the actual vehicle heater test according to the HVAC common, even if the difference between the upper and lower temperature difference of the mix mode for each vehicle type and region, the cam is rotated to various positions without replacing the cam itself It is an object of the present invention to provide a method for controlling a mix mode of an air conditioner for a vehicle to discharge air by adjusting a flow rate distribution ratio between a defrost door and a floor door.

In order to achieve the above object, in the vehicle air conditioner according to the present invention, a method of controlling a mixed mode in which a cam is rotated by driving an actuator to adjust air volume distribution ratios of a defrost door and a floor door to discharge air is provided in a defrost door. And setting a plurality of mix mode types according to vertical temperature differences generated by the air volume distribution ratio of the floor door. Setting a cam position for adjusting a flow rate distribution ratio of the defrost door and the floor door so that the set up and down temperature difference for each mix mode type is generated; And controlling the cam to rotate to a setting position of a corresponding type by driving an actuator when any one of the set mix mode types is selected, wherein the air flow rate distribution ratios of the defrost door and the floor door for each mix mode type are vertically The air volume distribution ratio of the defrost door decreases and the air volume distribution ratio of the floor door increases as the temperature difference increases.

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Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a method for controlling a mix mode of an air conditioner according to the present invention, and FIG. 4 is a view for explaining a flow rate distribution ratio for each mix mode according to the present invention.

First, a plurality of mix mode types are set according to the up and down temperature difference generated by the air volume distribution ratio discharged according to the opening degree of the defrost door and the floor door (S110). For example, as shown in Fig. 4, the mix mode type can be set to Type 1 having a vertical temperature difference of 0 ° C, Type 2 having 5 ° C, Type 3 having 8 ° C, and the like.

Subsequently, the cam position for adjusting the air flow rate distribution ratio of the defrost door and the floor door is set to be a condition in which the up and down temperature difference for each set mix mode type may occur (S120). For example, as shown in FIG. 4, in the case of Type 1, the cam position is set so that the air flow rate distribution ratios of the defrost door and the floor door are 41% and 44%, respectively, so that the temperature difference can be 0 ° C. Sets the cam position so that the air flow rate distribution ratio of the defrost door and the floor door is 35% and 53%, respectively, so that the temperature difference can be 5 ° C. In the case of type 3, the airflow distribution ratio of the defrost door and the floor door is 28, respectively. The cam position can be set to be% and 57% so that the temperature difference can be 8 ° C. Here, the air flow rate distribution ratio of the side vent door is always 15% to prevent fogging.

Finally, when one of the mix mode types set above is selected when the actual vehicle heater test is performed according to the common use of the HVAC, the actuator is driven to control the cam to rotate to the setting position of the corresponding type (S130). For example, when Mix mode type 1 is selected, the actuator is driven to rotate the cam so that the air volume distribution ratios of the defrost door and the floor door are 41% and 44%, respectively.

The mixed mode control method of the above-described vehicle air conditioner can be applied when the actual vehicle heater test according to the HVAC common use, if the upper and lower temperature difference regulation is -2 ℃ ~ 0 ℃ based on the embodiment of Figure 4 mix When mode type 1 is selected and mix mode type 2 is selected when it is 4 degreeC-5 degreeC, mix mode type 3 can be selected when it is 7 degreeC-8 degreeC.

On the other hand, although the method of controlling the mix mode of the vehicle air conditioner according to the present invention has been described according to a limited embodiment, the scope of the present invention is not limited to a specific embodiment, it will be apparent to those skilled in the art in connection with the present invention. Various alternatives, modifications, and changes can be made within the scope of this. For example, the mix mode may be variously set as necessary, the cam position may be set accordingly, and the mix mode may be controlled.

As described above, the mix mode control method of the vehicle air conditioner according to the present invention, by setting a plurality of mix mode types to control the position of the cam by providing a convenience for use in the actual vehicle heater test according to HVAC common products There is an advantage to improve the satisfaction level.

Claims (2)

A method of controlling a mix mode in which the air is discharged by adjusting the air volume distribution ratio of the defrost door and the floor door by rotating the cam by driving the actuator in the vehicle air conditioner. Setting a plurality of mix mode types according to vertical temperature differences generated by the airflow rate distribution ratios of the defrost door and the floor door; Setting a cam position for adjusting a flow rate distribution ratio of the defrost door and the floor door so that the set up and down temperature difference for each mix mode type is generated; Controlling the cam to rotate to a setting position of a corresponding type by driving an actuator when any one of the set mix mode types is selected; The air volume distribution ratio of the defrost door and the floor door for each mix mode type is set such that the air volume distribution ratio of the defrost door decreases and the air volume distribution ratio of the floor door increases as the temperature difference increases. Control method. delete

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