KR100211375B1 - Automobile air conditioning apparatus and control method therefor - Google Patents

Abstract

According to the present invention, since the air conditioner for a vehicle is an integrated air conditioning system, since the air discharged into the room is temporarily discharged to the ventilation grille of the driver's seat and the passenger seat, the occupant of each seat may not realize this problem. In order to solve this problem, the cooling water temperature sensor 210 for detecting the coolant temperature, the outside air temperature sensor 220 for detecting the temperature of the outside air, the operation unit 230 for setting the target temperature and operation mode of the front, rear, left and right of the vehicle, The load sensor 224 is installed on the lower surface of each seat, and measures the presence or absence of occupants, and the seat temperature sensor 222 is installed on the lower surface of each seat, and measures the temperature of an alternate occupant. The vehicle temperature sensor 221 which measures the temperature of the part, the temperature control part 260 which controls the air temperature which flows through the independent duct of the front, back, left, and right sides, respectively, The temperature control unit receives signals from the coolant temperature sensor 210, the outside air temperature sensor 220, the vehicle temperature sensor 221, the operation unit 230, the seat temperature sensor 222, and the load sensor 224. Provided is an automotive heating and cooling device including a control unit 200 for outputting an appropriate control signal to 260 and a control method thereof.

Description

Automotive air conditioning and control method

The present invention relates to a vehicle air conditioning system and a control method thereof, and more particularly, to a vehicle air conditioning unit and a control method capable of independently controlling the temperature of the front, rear, left and right of the vehicle compartment.

In general, a car has a heating and cooling system to secure a driver's watch for safe and comfortable driving by ensuring that a person who rides in a car has a pleasant environment under all weather and driving conditions, and also prevents windshields and frosts. Is installed.

In order to achieve this purpose, the automotive air conditioner must maintain an appropriate temperature, humidity and air flow, and must also be able to maintain clean air.

In addition, the glass in front, rear, left and right should be prevented from becoming blurred or frosted.

Referring to FIG. 1, a conventional automotive air conditioning apparatus is as follows.

Automotive air conditioning system is equipped with various control switches (blower control, wind direction control, temperature control, etc.) installed in the instrument panel 10 of the driver's seat, the heater unit 20 for heating, the cooling unit 30 for cooling and the wind It is composed of a blower unit 40 and the like to blow.

In detail, an air duct 42, which is a passage through which air flows, is installed inside the instrument panel 10 in the vehicle interior, and the heater unit 20 is mounted on the air duct 42, and the cooling unit 30 is also provided. ) And a blower unit 40 are assembled with the heater unit 20.

Ventilation grills 52 and 54 for discharging the air flowing through the air duct 42 to the vehicle compartment are usually installed on the front surface of the instrument panel 10.

The ventilation grilles 52 and 54 are divided into a side grille 52 on the driver's side and a passenger's side and a center grill 54 between the driver's seat and the passenger's seat, and a defroster outlet for removing frost of the windshield grass. 56, and the like.

Referring to Figure 1 illustrates the operation of a conventional automotive air conditioning unit as follows.

When the air conditioning unit is operated, air is blown into the duct 42 by the blower unit 40, and the air is brought into a proper state in the heater unit 20 and the cooling unit 30, and the ventilation grills 52 and 54 are removed. It is supplied to the cabin through.

That is, since the conventional air conditioner for a vehicle is an integrated air conditioning system, the air discharged into the cabin is temporarily discharged by the ventilation grilles of the driver's seat and the passenger seat, so that air of the same temperature is discharged to the driver's seat or the passenger seat.

Therefore, when the driver and the passenger of the passenger seat or the occupant of the rear seat want a different temperature, there is a problem that this can not be realized in the conventional automotive air conditioning system.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a heating and cooling device for a vehicle that can control the front, rear, left and right of the vehicle at different temperatures and a control method thereof.

1 is a perspective view showing a conventional automotive air conditioning unit,

2 is a plan view showing a temperature control region in a vehicle air conditioning system according to the present invention,

3 is a schematic view showing a state in which a sensor of the automotive air conditioning apparatus according to the present invention is attached,

Figure 4 is a block diagram showing the configuration of a vehicle heating and cooling device according to the present invention,

5 is a flowchart illustrating a control method of a vehicle heating and cooling device according to the present invention.

* Explanation of symbols on the main parts of the drawings

2: seatback 222: temperature sensor

224: load sensor 200: control unit

210: cooling water temperature sensor 220: outside temperature sensor

230: operation unit 260: temperature control unit

221: Cabin temperature sensor

Referring to the configuration of the present invention for achieving the above object is as follows.

A feature of the present invention is to install independent ducts in front, rear, left and right of the vehicle compartment, and to independently control the temperature of the air flowing through the duct, and furthermore, the seat temperature sensor and the load on the lower surfaces of the left and right front seats and the left and right rear seats. The sensor is installed to automatically maintain the optimum cabin temperature according to the temperature of each passenger.

In other words, the vehicle air conditioner according to the present invention, the cooling water temperature sensor for detecting the coolant temperature, the outside air temperature sensor for sensing the temperature of the outside air, the operation unit for setting the target temperature and operation mode of the front, rear, left and right, and each seat of the front and rear A load sensor installed on the lower surface to measure the presence or absence of the occupant, seat temperature sensors installed on the lower surface of each seat in front, rear, left and right, and a temperature sensor to measure the temperature of each part of the vehicle, A temperature control unit for controlling the air temperature flowing through independent ducts in front, rear, left and right of the vehicle, and receiving signals from the cooling water temperature sensor, the outside air temperature sensor, the vehicle temperature sensor, the operation unit, the seat temperature sensor, and the load sensor; And a control unit for outputting an appropriate control signal to the temperature control unit.

Here, the temperature control unit appropriately controls each heating unit, cooling unit, and blower unit for controlling the state of air flowing through each independent duct.

And the control method of the automotive heating and cooling apparatus according to the present invention comprises the steps of starting the program stored in the control unit when the vehicle is started, determining whether the coolant temperature is above a certain temperature, and if the coolant temperature is above a certain temperature, respectively Determining whether an input value of the load sensor is equal to or greater than a predetermined value; measuring the temperature of each sheet by each sheet temperature sensor when the input value of each load sensor is equal to or greater than a predetermined value; Receiving a measurement value of the outside temperature and the room temperature of each part from the sensor, determining whether the operation mode is the automatic mode, and in the automatic mode, determine the optimal target room temperature of each part using the sheet temperature. And the step of receiving the desired room temperature of the front, rear, left and right from the operation unit if it is not in the automatic mode, and setting the target room temperature as the respective target room temperature. Determining whether the outside air temperature is higher than the target room temperature of each seat; and if the outside air temperature is higher than the target temperature of each seat, operating an air conditioner for cooling, and the outside air temperature is the target temperature of each seat. If it is lower, the step of stopping the air conditioner for heating, and determining the rotational direction and the rotational speed of the blower having the respective room temperature and the respective target room temperature, and controlling the blower accordingly.

Therefore, according to the present invention, it is possible to independently control the temperature of each seat.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

Figure 4 is a block diagram showing an embodiment to which the present invention is applied to describe the air-conditioning device for a vehicle according to the present invention with reference to the following.

The coolant temperature sensor 210, the outside air temperature sensor 220, the operation unit 230, the seat temperature sensor 222, the load sensor 224, and the vehicle interior temperature sensor 221 are electrically connected to the input side of the control unit 200. On the output side, the temperature controller 260 is electrically connected.

Of course, as shown in Figure 2, the seat temperature sensor 222 and the load sensor 224 are respectively installed on the lower surface of the seat back (2), the vehicle temperature sensor 221, each part of the compartment (FL, FR, RL, RR) is installed in place.

The air ducts are formed independently of each other in front, rear, left, and right of the vehicle compartment, and the temperature controller 260 controls the air flowing through the respective ducts.

The operation of the embodiment according to the present invention described above will be described with reference to FIGS. 4 and 5.

When the vehicle is started, the vehicle air conditioner according to the present invention is activated (S0).

And if the cooling water temperature is less than a certain temperature (X) it can not have the effect of heating is operated only when the cooling water temperature is above a certain temperature (X) (S10).

Next, it is determined whether the measured value of the load sensor is greater than or equal to a predetermined value (Y), and if it is larger than about 10KG, it is determined that the occupant is in the seat and proceeds to the next step (S20).

Of course, the predetermined value Y can be adjusted to an appropriate value as necessary.

Next, the sheet temperature TB of each part FL, FR, RL, and RR is input from the sheet temperature sensor 222 (S30), and the outside temperature T0 is received from the outside temperature sensor 220 and the cabin temperature sensor 221. And receives the room temperature (TI) of each part (S40, S50).

Next, it is determined whether the operation mode is the automatic mode (S60), and in the case of the automatic mode, the optimum target room temperature TS of each part FL, FR, RL, RR is determined using the seat temperature TB. If it is determined (S70), in the non-automatic mode, the desired temperature is set by the operation unit 230, and this is set as the target room temperature TS (S80).

Then, it is determined whether the outside temperature T0 is higher than the target room temperature TS (S90), and when it is high, the temperature control unit 260 is controlled for cooling. That is, start the air conditioner (S100).

On the contrary, when the outside air temperature T0 is lower than the target room temperature TS, the air conditioner is stopped for heating (S110).

Then, the rotational speed of an unshown blower unit installed in each duct is determined in proportion to the deviation of the outside air temperature T0 and the target room temperature TS, and the blower unit is controlled through the temperature control unit 260 ( S120).

That is, by the above process it is possible to independently control the temperature of each of the compartments (FL, FR, RL, RR).

Referring to the effects of the embodiment according to the present invention described above are as follows.

According to the present invention described above, it is possible to control the temperature of each part of the vehicle compartment independently, so that it is possible to ride comfortably and the merchandise of the vehicle is increased.

The present invention has been described above only one embodiment, but as can be seen in the appended claims, those skilled in the art to which the present invention pertains may be modified without departing from the spirit of the present invention. It will be understood that it belongs to the scope of the invention.

Claims (2)

Cooling water temperature sensor for detecting the cooling water temperature; An outside air temperature sensor for sensing a temperature of outside air; An operation unit for setting a target temperature and an operation mode of the front, rear, left and right of the vehicle; Load sensors which are installed on the lower surface of each seat in front, rear, left and right and measure the presence or absence of a passenger; Seat temperature sensors installed on the bottom of each seat in front, rear, left and right to measure a temperature of a general occupant; A cabin temperature sensor for measuring a temperature of each part of the cabin; A temperature control unit controlling air temperatures flowing through independent ducts in front, rear, left, and right of the vehicle; A control unit that receives signals from the cooling water temperature sensor, the outside air temperature sensor, the vehicle temperature sensor, the operation unit, the seat temperature sensor, and the load sensor and outputs an appropriate control signal to the temperature control unit; Automotive air conditioning unit including. Starting a program stored in the control unit when the vehicle is started; Determining whether the cooling water temperature is above a predetermined temperature; Determining whether an input value of each load sensor is greater than or equal to a predetermined value when the cooling water temperature is greater than or equal to a predetermined temperature; Measuring the temperature of each sheet by each sheet temperature sensor if the input value of each load sensor is above a predetermined value; Receiving measurement values of the outside air temperature and the room temperature of each part from the outside air temperature sensor and the room temperature sensor; Determining whether the driving mode is an automatic mode; Determining the optimum target room temperature of each part using the respective sheet temperatures in the automatic mode; If the automatic mode is not the input of the desired room temperature of the front, rear, left and right, and the target temperature of the car; Determining whether the outside air temperature is higher than the target room temperature of each seat; Operating an air conditioner for cooling if the outside temperature is higher than a target temperature of each seat; Stopping the air conditioner for heating when the outside temperature is lower than the target temperature of each seat; Determining a rotation direction and a rotation speed of the blower with the respective room temperature and the respective target vehicle temperature, and controlling the blower accordingly. Control method of a vehicle heating and cooling device comprising.