KR20020025284A - Cooling system of airconditioner in the early - Google Patents

Abstract

PURPOSE: An initial cooling device of air conditioner is provided to swiftly cool down a car room by improving heat efficiency on initial stage of re-operation of the air conditioner by storing refrigerant in a receiver dryer with capacity larger than usual even when a vehicle stops. CONSTITUTION: A receiver dryer(4) with large capacity having a manometer(401) is installed between an evaporator(3) and a compressor(1). Solenoid valves(5,6) are installed on both sides of the receiver dryer. A bypass line(7) is connected with the solenoid valves. A controller is connected with the solenoid valves to actuate the solenoid valves according to signals of a velocity sensor connected to the controller to control the receiver dryer.

Description

Early cooling of air conditioners {COOLING SYSTEM OF AIRCONDITIONER IN THE EARLY}

In the heat exchanger of an air conditioner for a vehicle, when the heat exchanger is operated during the summer or the like and the operation of the air conditioner is stopped for a long time according to the parking of the vehicle, the indoor temperature of the vehicle increases rapidly due to the non-operation of the heat exchange. The present invention relates to an initial air conditioner of an air conditioner capable of shortening the cooling time even when the air conditioner of the heat exchanger is initially operated according to the room temperature. .

In general, the vehicle is provided with an air conditioner for cooling the room, and the air conditioner installed for cooling is a condenser for condensing the compressed refrigerant transferred from the compressor, a receiver dryer and a duct connected to the discharge part of the evaporator case in the room. It consists of an evaporator for supplying the low temperature heat exchanged to the furnace and an evaporator blower for supplying the heat exchanged cold air to the room. When the compressor is driven, the condenser operates to condense and release condensation heat and expand the condensed refrigerant. The valve and the receiver drier are transferred to the evaporator, which absorbs the heat of the air sucked into the unit and performs heat exchange to lower the air and supply the lowered air to the interior of the vehicle using a blower. It was composed.

In the conventional air conditioner operated as described above, when the vehicle is parked for a long time in the summer and the air conditioner is not operated, the indoor temperature of the vehicle is rapidly increased, and the vehicle is in a state where the indoor temperature of the vehicle is rapidly increased. Even if the air conditioner is operated for indoor cooling of the air conditioner, the refrigerant circuit of the air conditioner starts from the compression operation of the compressor, and thus, during the initial operation of the air conditioner, it is not possible to rapidly cool the room temperature, and to lower the indoor temperature. There was a closed end that caused a lot of heat loss with the operation.

In addition, as the initial operating time increases, there is a problem in that occupants of the vehicle have to withstand high temperatures for a long time, such that they cannot make comfortable riding.

The present invention has been made in view of the above-described conventional problems, the present invention, in the heat exchanger of the vehicle air conditioner, when operating the heat exchanger in the summer or the like when the operation of the air conditioner stops for a long time according to the parking of the vehicle, The indoor temperature of the vehicle is rapidly increased due to the non-heating of the heat exchanger, and according to the rapidly increased indoor temperature, the cooling time can be shortened even when the air conditioner of the heat exchanger is initially operated, and the initial operating efficiency is improved. It is to provide an initial cooling device of the air conditioner to greatly increase the heat exchange efficiency, which will be described in detail with reference to the accompanying drawings below.

1 is a configuration diagram showing an operating state of the embodiment of the present invention

2 is a refrigerant circuit diagram of an embodiment of the present invention;

Explanation of symbols on the main parts of the drawing

1: compressor

2: condenser

3: evaporator

4: receiver dryer

401: pressure gauge

5,6: Solenoid Valve

7: bypass line

8: controller

9: speed sensor

10: timer

In the configuration of the refrigerant circuit including the compressor (1), the condenser (2), the evaporator (3) and the receiver dryer (4), the capacity is large between the evaporator (3) and the compressor (1), and the pressure gauge (401). And a solenoid valve (5) and (6) on both sides of the receiver dryer (4). The bypass line (7) is provided to the solenoid valves (5) and (6). It is made up of connections.

In addition, the solenoid valves 5 and 6 are connected to the controller 8 to which the speed sensor 9 and the timer 10 are connected to detect the traveling speed of the vehicle, and to the detection signal of the speed sensor 9. Accordingly, the controller 8 is configured to actuate the receiver dryer 4 by operating the solenoid valves 5 and 6.

According to the present invention configured as described above, when the vehicle equipped with the refrigerant circuit is parked for a long time, the controller 8 which operates the solenoid valves 5 and 6 detects a signal detected by the speed sensor 9 of the vehicle. As a result, the solenoid valves 5 and 6 are closed. Accordingly, the large capacity receiver dryer 4 stores refrigerant circulated by the refrigerant circuit, for cooling the vehicle in the above state. When the air conditioner is restarted, the controller 8 connected to the speed sensor 9 and the timer 10 is operated at the initial time of restarting to open the solenoid valves 5 and 6 and the solenoid valve 5 ( 6, the newly compressed refrigerant and refrigerants stored in the receiver dryer 4 are formed of a refrigerant circuit including a compressor 1, a condenser 2, an evaporator 3, and a receiver dryer 4. The circulation is cooling.

Therefore, the cooling of the room is made even at the initial restart of the air conditioner by the refrigerant stored in the receiver dryer 4, and the cooling operation time of the vehicle can be shortened.

When the initial operation time passes as described above, the controller 8 closes the solenoid valves 5 and 6 by the set time of the timer 10 and is connected to the solenoid valves 5 and 6. The bypass line 7 is operated to perform normal cooling operation. When the speed sensor 9 detects the speed of the driving speed according to the start of the vehicle, the controller 8 according to the signal of the speed sensor 9. By selectively operating the opening and closing of the solenoid valve (5) (6) to achieve the cooling of the room, when the pressure gauge 401 installed in the receiver dryer (4) detects a high pressure of a predetermined pressure, The bypass line 7 is activated or the air conditioner is stopped according to the signal for the high pressure.

As described above, the present invention includes a receiver dryer 4 and a solenoid valve 5 and 6 having a larger capacity than the conventional one, and a speed sensor 9 and a timer 10 for detecting the traveling speed of the vehicle. By controlling by the connected controller 8, the refrigerant can be stored in the receiver dryer 4 even when the vehicle is stopped, thereby improving thermal efficiency at the initial stage of restarting the air conditioner. It is characterized by the fact that it is possible to improve the efficiency of the.

Claims (2)

In the refrigerant circuit including the compressor (1), the condenser (2), the evaporator (3) and the receiver dryer (4), the capacity is large between the evaporator (3) and the compressor (1) and the pressure gauge (401). A receiver dryer (4) is provided and solenoid valves (5) and (6) are provided on both sides of the receiver dryer (4). Bypass lines (7) are connected to the solenoid valves (5) and (6). Initial cooling device of the air conditioner characterized in that the configuration. According to claim 1, The solenoid valves (5) (6) are connected to the controller (8) connected to the speed sensor (9) and the timer (10) for detecting the running speed of the vehicle, the speed sensor (9) Initial cooling device of the air conditioner, characterized in that the controller (8) in accordance with the detection signal of the actuating the solenoid valve (5) (6) to operate the receiver dryer (4).