KR100859735B1 - Multiple air-conditioning system performing accurate temperature control for car, and control method thereof - Google Patents

Abstract

In the vehicle multiple air conditioning system according to the present invention, the temperature control door (TR _L , TR _R ) and the wind direction control door (DR _L ) in at least the first and second areas for the evaporator (EV) and the heater (HT) of the air conditioner of the vehicle. _L and DR _R ) are provided respectively. The system includes first and second temperature sensors TS _L , TS _R. The first temperature sensor TS _L is provided in a common flow path of air to be discharged from the first area to the interior of the vehicle. The second temperature sensor T _S is provided in a common flow path of air to be discharged from the second area to the interior of the vehicle. In addition, the temperature control doors TR _L and TR _R provided in at least one of the first and second regions so that the temperature data from the first and second temperature sensors TS _L and TS _R coincide with each other. Driven.

Description

Multiple air-conditioning system performing accurate temperature control for car, and control method

1 is a side view showing a vehicle multiple air conditioning system according to the present invention.

2A to 2C are diagrams showing a path of discharge air in each wind direction mode selected by a user in the multiple air conditioning system of FIG. 1.

3 is a block diagram illustrating a control device of the multiple air conditioning system of FIG. 1.

4 is a flow chart showing a temperature control algorithm of the microprocessor of the control device of FIG.

<Explanation of symbols for the main parts of the drawings>

EV ... evaporator, HT ... heater,

DR _DL , DR _VL , DR _FL , DR _L , DR _R ... air direction door, TS _L , TS _R ... temperature sensor,

TR _L , TR _R ... thermostat door, 1 ... thermostat,

1a ... Microprocessor.

The present invention relates to a vehicle multiple air conditioning system and a method of controlling the same. It is about.

According to one example of a vehicle multiple air conditioning system, the left (driver's seat side) and right (passenger's seat) areas are divided by a diaphragm for the evaporator and the heater of the air conditioner of the vehicle. In addition, a left temperature control door and a left wind direction control door are provided in the left region, and a right temperature control door and a right wind direction control door are provided in the right region. Here, the wind direction control door includes a plurality of doors.

Two modes are typically used to control such a multiple air conditioning system. In the split mode as the first mode, left and right controls are performed separately. In the single mode as the second mode, the temperatures of the discharged air to the left and the right are controlled to coincide with each other.

In the performance of the single mode as the second mode, conventionally, the left and right temperature regulating doors are commonly controlled by the opening degree of the temperature regulating door corresponding to the user's set temperature. However, due to the presence of tolerances caused by the drive mechanisms, for example, cams, links and thermostat doors, the temperatures of the discharged air to the left and right regions in the vehicle do not coincide with each other. Accordingly, there is a problem that the passengers feel uncomfortable.

 SUMMARY OF THE INVENTION An object of the present invention is to provide a multiple air conditioning system for a vehicle and a method of controlling the same, in which the temperatures of the discharged air to each region in the vehicle can be exactly matched according to a user's selective request to make the user in the vehicle comfortable.

In the vehicle multiple air conditioning system of the present invention for achieving the above object, the temperature control door (TR _L , TR _R ) and the wind direction in at least first and second regions for the evaporator (EV) and the heater (HT) of the air conditioner of the vehicle. Control doors DR _L and DR _R are respectively provided. The system includes first and second temperature sensors TS _L , TS _R. The first temperature sensor TS _L is provided in a common flow path of air to be discharged from the first area to the interior of the vehicle. The second temperature detector T _S is provided in a common flow path of air to be discharged from the second area to the interior of the vehicle. In addition, the temperature control doors TR _L and TR _R provided in at least one of the first and second regions so that the temperature data from the first and second temperature sensors TS _L and TS _R coincide with each other. ) Is driven.

The control method of the present invention for achieving the above object, the temperature control door (TR _L , TR _R ) and the wind direction control door in at least first and second areas for the evaporator (EV) and the heater (HT) of the air conditioner of the vehicle. A control method of a vehicle HVAC system provided with (DR _L , DR _R ), respectively, comprising first and second sensing steps and a driving step. In the first sensing step, a first temperature is sensed in a common flow path of air to be discharged from the first area to the interior of the vehicle. In the second sensing step, a second temperature is sensed in a common flow path of air to be discharged from the second area to the interior of the vehicle. In the driving step, the temperature control doors TR _L and TR _R provided in at least one of the first and second regions are driven so that the first and second temperatures coincide.

According to the vehicle multiple air conditioning system and a control method thereof of the present invention, any one of the temperature control doors (TR _L , TR _R ) is driven so that the first and second temperatures sensed in the respective common flow paths coincide. do. Accordingly, the temperatures of the discharged air to each region in the vehicle can be exactly matched according to the user's selective demand, so that the user in the vehicle can be comfortable.

Hereinafter, preferred embodiments according to the present invention will be described in detail.

Referring to FIG. 1, in the vehicle multiple air conditioning system according to the present invention, the left (driver's seat side) and the right (passenger's seat side) areas of the evaporator EV and the heater HT of the air conditioner of the vehicle are divided by a diaphragm. The left region is provided with the left temperature control door (TR _L ) and the left wind direction control doors (DR _DL , DR _VL , DR _FL ), the right region (not shown) is the right temperature control door (not shown) and the right wind direction control Doors (not shown) are provided symmetrically with respect to the left area.

Here, the left temperature sensor TS _L is provided in a common flow path of air to be discharged from the left area to the interior of the vehicle. FIG. 2A shows a path of discharge air in a first wind direction mode selected by a user in the multiple air conditioning system of FIG. 1, for example, a vent mode. FIG. 2B illustrates a path of discharge air in a second wind direction mode selected by a user in the multiple air conditioning system of FIG. 1, for example, a floor mode. FIG. 2C shows a path of discharge air in a third wind direction mode selected by a user in the multiple air conditioning system of FIG. 1, for example, Defrost mode. 2A to 2C, it can be seen that for all the wind direction modes, the left temperature sensor TS _L is provided in a common flow path of cold air and / or warm air to be discharged from the left area to the interior of the vehicle. Likewise, the left temperature sensor (TS _L) and symmetrically to the right temperature sensor (not shown) is located is provided to the common flow path of the air to be discharged to the interior of the vehicle from the right side region.

Accordingly, as described below, the temperature control door provided in at least one of the left and right regions may be driven so that the temperature data from the left temperature sensor TS _L and the right temperature sensor are matched with each other. .

3 shows a control device of the multiple air conditioning system of FIG. In FIG. 3, the same reference numerals as used in FIG. 1 indicate objects of the same function. Referring to Figure 3, the thermostat 1 is composed of a microprocessor 1a and its peripheral circuits. The peripheral circuit of the thermostat 1 has a left discharge temperature detector TS _L , a right discharge temperature detector TS _R , an outside air temperature detector 3, a solar radiation detector 2, an in-vehicle temperature detector 5 and Analog sensing signals from the vehicle humidity sensor 4 are input. In addition, the peripheral circuit of the thermostat 1 converts the input analog sense signals into digital signals and inputs them to the microprocessor 1a. Accordingly, the microprocessor 1a performs the respective control algorithm according to the input digital sensing signals, while the left temperature controlling door TR _L , the left wind direction controlling door DR _L , and the right temperature controlling door TR _{R are performed} . And digital control signals of the right wind direction control door DR _R , the air volume control motor 7, the inside and outside air doors 8, and the air conditioner driver 9. Then, the peripheral circuit of the thermostat 1 converts the digital control signals from the microprocessor 1a into analog control signals and outputs them.

Here, when the automatic temperature control command is input from the user, the microprocessor 1a performs the algorithm of FIG. The temperature control algorithm of the microprocessor 1a will be described with reference to FIGS. 3 and 4 as follows.

First, initial values of each parameter are loaded inside the microprocessor 1a (step S1). Next, the sensed data inputted through the peripheral circuit of the thermostat 1 is read from the outside temperature sensor 3, the solar radiation detector 2, the vehicle temperature sensor 5, and the vehicle humidity sensor 4 ( Step S2). Next, the opening degree of the left temperature control door TR _L and the right temperature control door TR _R and the target air volume of the air volume control motor 7 are calculated and applied according to the temperature and air volume setting values by the user (step S3). Next, it is checked whether the control mode of the multiple air conditioning system by the user is the single mode (step S4). If not in single mode, i.e. in split mode, the left temperature control door TR _L and the right temperature control door TR _R are individually controlled according to the calculated openings until the end signal is input (step S5 and S6). In the single mode, the following steps are repeatedly performed until the end signal is input.

First, the discharge temperature data inputted through the peripheral circuit of the thermostat 1 from the left and right discharge temperature sensors TS _L and TS _R is read (step S7). Next, the right discharge temperature T _OR is subtracted from the left discharge temperature T _OL , and it is determined whether the absolute value of this subtraction result exceeds the reference value of 1.5 ^° C. (step S8). If the absolute value of the subtraction result exceeds the reference value of 1.5 ^o C, the polarity of the subtraction result is determined (step S9). If the result of the subtraction is negative, since the right discharge temperature T _OR is higher than the left discharge temperature T _OL , the right temperature control door TR _R is driven in the low temperature direction (step S10). If the result of the subtraction is positive, since the right discharge temperature T _OR is lower than the left discharge temperature T _OL , the right temperature control door TR _R is driven in the high temperature direction (step S11).

As described above, according to the vehicle multiple air conditioning system and the control method thereof according to the present invention, any one of the temperature control doors (TR _L , TR _R ) are driven to match the temperatures sensed in each common flow path. Accordingly, the temperatures of the discharged air to each region in the vehicle can be exactly matched according to the user's selective demand, that is, the demand of the single mode, so that the user in the vehicle can be comfortable.

The present invention is not limited to the above embodiments, but may be modified and improved by those skilled in the art within the spirit and scope of the invention as defined in the appended claims.

Claims (3)

For vehicles equipped with temperature control doors TR _L and TR _R and wind direction control doors DR _L and DR _{R in} at least first and second regions of the evaporator EV and the heater HT of the air conditioner of the vehicle, respectively. In a multiple air conditioning system, A first temperature sensor TS _L provided in a common flow path of air to be discharged from the first region to the interior of the vehicle, and Including a second temperature sensor (TS _R ) provided in a common flow path of air to be discharged from the second area to the interior of the vehicle, The temperature control doors TR _L and TR _R provided in at least one of the first and second regions are arranged such that the temperature data from the first and second temperature sensors TS _L and TS _R coincide with each other. Multi-HVAC System for Drive Vehicles. For vehicles equipped with temperature control doors TR _L and TR _R and wind direction control doors DR _L and DR _{R in} at least first and second regions of the evaporator EV and heater HT of the air conditioner of the vehicle, respectively. In the control method of the multiple air conditioning system, A first sensing step of sensing a first temperature in a common flow path of air to be discharged into the interior of the vehicle from the first area; A second sensing step of sensing a second temperature in a common flow path of air to be discharged from the second area to the interior of the vehicle, and And a driving step of driving a temperature regulating door (TR _L , TR _R ) provided in at least one of the first and second regions so that the first and second temperatures coincide with each other. The method of claim 2, wherein in the driving step, Subtracting the second temperature from the first temperature, Determining a polarity of the subtraction result when the absolute value of the subtraction result exceeds a reference value, Driving the temperature control door TR _R provided in the second region in a high temperature direction if the subtraction result is positive in the determining step; and And driving the temperature control door TR _R provided in the second region in a low temperature direction when the subtraction result is negative in the determination step.

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