KR100745022B1 - A air-cleaning device for evaporator of vehicle and control method - Google Patents

Abstract

A sterilization device for an evaporator of a vehicle air conditioner and a control method thereof are provided to sterilize an evaporator according to a program stored in a memory of a control part by driving a UV lamp according to temperature of the evaporator. A sterilization device for an evaporator of a vehicle air conditioner includes an engine starting sensing part(160) connected to a power line for sensing engine starting of a vehicle, and a UV lamp(130) mounted around an evaporator(50) and driven by power from a vehicle battery. A temperature sensor(140) is mounted around the evaporator for sensing temperature of the evaporator. A mode selection switch(150) is to set an automatic mode or a continuous mode according to the sensed evaporator temperature, wherein the UV lamps is turned on or off in the automatic mode and continuously turned on in the continuous mode. A control part(110) controls the on/off of the UV lamp according to the set mode after the engine start is sensed.

Description

Sterilizer and control method for evaporator of vehicle air conditioning system {A AIR-CLEANING DEVICE FOR EVAPORATOR OF VEHICLE AND CONTROL METHOD}

1 schematically illustrates a vehicle air conditioning system to which the present invention is applied.

Figure 2 shows only the electrical configuration of the evaporator sterilizer of the vehicle air conditioning system according to the present invention.

3 is a flowchart illustrating a control operation of an evaporator sterilizer of a vehicle air conditioning system according to the present invention.

* Description of the symbols for the main parts of the drawings *

30..Exhaust duct 50..Evaporator

100. Sterilization unit 110. Control unit

120. Oscillation transformer 130. UV lamp

140. Temperature sensor 150. Mode selector switch

160..Startup sensor 170..Timer

The present invention relates to a sterilizer for an evaporator of a vehicle air conditioning system and a control method thereof, and more particularly, to sterilize an evaporator constituting a vehicle air conditioning system using an ultraviolet lamp to provide more comfortable air to a room. An apparatus for sterilizing an evaporator of a system and a control method thereof.

In general, the air conditioning system of the vehicle is for safe driving by removing the frost and the like which are cooled / heated inside the vehicle or the wind shield for the driver and the passenger. To this end, the vehicle air conditioning system is equipped with a cooling unit and a heating unit at the same time, and after introducing the air or bet selectively, the air is cooled or heated to blow into the vehicle interior. The cooling unit of the conventional vehicle air conditioning system is provided with an evaporator (Evaporator) for generating cold air, the operation of the cooling unit in the evaporator due to the temperature difference with the heat exchanged air, the water droplets are adsorbed on the surface of the evaporator is damp It becomes a state.

Therefore, foreign matters from the air flowing from the outside may be attached to the water droplets when the cooling unit of the vehicle is operating, and thus the evaporator is an optimal state in which mold and bacteria may inhabit. As a result, harmful substances made by mold and bacteria are blown into the vehicle interior, resulting in an unpleasant smell.

The present invention is to solve this problem; An object of the present invention is to provide an evaporator sterilizer and a control method thereof of the vehicle air conditioning system capable of supplying purified air to the vehicle interior by sterilizing the evaporator of the vehicle air conditioning system in which mold and bacteria can inhabit.

In addition, another object of the present invention to provide an evaporator sterilizer and a control method thereof of the vehicle air conditioning system that can operate the sterilizer more efficiently according to the evaporator conditions of the vehicle air conditioning system.

Evaporator sterilization apparatus of a vehicle air conditioning system according to the present invention for achieving this object; A start detection unit connected to IG1, which is a power line required to start the vehicle, to detect whether the vehicle is started; An ultraviolet lamp installed around the evaporator and driven by the power of the vehicle battery; A temperature sensor installed around the evaporator to detect an evaporator temperature; A mode selection switch for setting an automatic mode for turning on / off an ultraviolet light lamp and a continuous mode for continuously turning on an ultraviolet light lamp according to the temperature of an evaporator detected by the temperature sensor; After the start of the vehicle is detected by the start detection unit, the mode is controlled by the mode selection switch to control the on / off of the UV lamp.If the automatic mode is set, the UV lamp is controlled according to the temperature change of the evaporator detected by the temperature sensor. A control unit for turning on / off and continuously turning on an ultraviolet lamp when set to a continuous mode; It is characterized by including.

In addition, the control method of the evaporator sterilizer of the vehicle air conditioning system according to the present invention; A vehicle startup determination step of determining whether the vehicle start is turned on; A lamp primary driving step of driving a timer to check a running time of the vehicle and first turning on the ultraviolet lamp to sterilize the evaporator, when it is determined that the vehicle starting is turned on in the vehicle starting determination step; A vehicle driving time determining step of controlling the ultraviolet lamp to be continuously turned on after the ramp primary driving step until the vehicle driving time elapses; If it is determined that the vehicle operation time has passed the set time in the vehicle operation time determination step, the automatic mode is set to turn on / off the ultraviolet lamp according to the temperature change of the evaporator detected by the temperature sensor, or the ultraviolet lamp is A driving mode determination step of determining whether to perform a continuous mode set to be continuously turned on; It is characterized by including.

According to this configuration; The evaporator of the vehicle air conditioner, which can inhabit mold and bacteria, is always sterilized to supply purified air to the vehicle interior, and the sterilization system can be efficiently operated according to the condition of the evaporator of the vehicle air conditioner.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Briefly, the accompanying drawings, Figure 1 schematically shows a vehicle air conditioning system to which the present invention is applied, Figure 2 schematically shows only the construction of the evaporator sterilizer according to the present invention, Figure 3 It shows a control operation of the evaporator sterilizer according to the invention.

First, as shown in FIG. 1, an air conditioning system of a vehicle to which the present invention is applied includes an intake duct 10 disposed in an engine room of a vehicle and capable of inhaling outside air or bet, and the intake duct 10. The blower unit 20 which is in communication, the exhaust duct 30 which guides the air forcedly blown through the blower unit 20 to the vehicle interior side, and the heater 40 and the evaporator which are arrange | positioned in the middle of the exhaust duct 30 ( 50).

The blower unit 20 includes a motor 21 and a blower 22, which are driven and controlled by a heating and cooling switch (not shown) in the vehicle. The exhaust duct 30 communicates the blower port 23 of the blower 20 with the vehicle interior, which is a cooling duct 31 and a heating duct 32 branched from the blower port 23 in both directions. The / heating ducts 31 and 32 are divided into a joining duct 33, which is joined again, and a distribution duct 34 for distributing air blowing from the joining duct 33 to the vehicle interior. In addition, the heating duct 32 is provided with a heater 40 which starts up during heating, and the cooling duct 31 is provided with an evaporator 50 constituting a cooling system. Therefore, when the wind from the blower port 23 of the blower 22 passes through the heater 40, the air becomes heating air, and after passing through the evaporator 50, the air becomes cooling air and is supplied to the vehicle interior. This cooling / heating selection is implemented by the opening and closing selection of the hinge door 60 controlled by the operating device (not shown) in the vehicle.

On the other hand, when the vehicle cooling system is running, the evaporator 50 is always moist due to the water droplets generated during heat exchange, and the conditions in which mold and bacteria can inhabit due to accumulation of foreign matter.

The present invention is to prevent the occurrence of bacteria and mold in the evaporator 50 constituting such a cooling system at the source to effectively exhibit the sterilization and deodorization function.

1 and 2, the evaporator sterilizer 100 (hereinafter, referred to as “sterilizer”) of the vehicle air conditioning system according to the present invention is driven by being supplied with power from the vehicle battery 70, and is concerned about bacterial propagation. When the vehicle is started, the evaporator 50 may be sterilized periodically or continuously.

To this end, the sterilization apparatus 100 according to the present invention, the start detection unit 160 for detecting whether the vehicle is started, the timer 170 for measuring the vehicle running time, and the evaporator 50 to detect the temperature Supplying operating power to the temperature sensor 140, the mode selection switch 150 for setting the sterilization mode, the ultraviolet lamp 130 provided in the vicinity of the evaporator 50, and the ultraviolet lamp 130. The oscillation transformer 120 and the control unit 110 for controlling the driving of the oscillation transformer 120 so that the ultraviolet lamp 130 is turned on or off periodically or continuously to sterilize, the details of each component The structure is as follows:

First, the start detection unit 160 is connected to the input side of the control unit 110, and IG (ignition) -1, which is a power line required for the key box when the driver turns the vehicle on by means of a start key. It is connected to and detects whether the vehicle is started. That is, when the driver turns on the vehicle, the positive current continuously flows from the vehicle battery 70 to the IG-1 power line, while the vehicle is shut off when the vehicle is turned off. With this in mind, if the start detection unit 160 is electrically connected to the IG-1 power line, it is possible to easily detect whether the vehicle is started without modifying the vehicle electronics box.

In addition, the timer 170 is also connected to the input side of the control unit 110, to measure the running time of the vehicle after the vehicle start is detected through the start detection unit 160. That is, the timer 170 is immediately driven when the detection signal of the start detection unit 160 is input, and thus the driving time of the vehicle can be measured.

As described above, the ultraviolet lamp 130 is disposed around the evaporator 50 disposed in the cooling duct 31 to sterilize the evaporator 50. That is, the ultraviolet ray lamp 130 is driven by being supplied with a high voltage through the oscillation transformer 120 which is driven by the DC 12 Volt power supply from the vehicle battery 70, in which the light having a wavelength of about 180 ~ 450nm Investigate. Therefore, not only the surface of the evaporator 50 is sterilized, but also various organic substances in the air introduced through the cooling duct 31 are decomposed, which will be described in detail in the operation description.

In addition, the temperature sensor 140 is also disposed around the evaporator 50 to detect its surface temperature, which detects the temperature of the evaporator 50 in the automatic mode to be described later and transmits it to the control unit 110 as an electrical signal. The controller 110 may intermittently turn on / off the ultraviolet lamp 130 based on this.

The mode selection switch 150 is an automatic mode (S60; see FIG. 3) and an ultraviolet lamp capable of turning on / off the ultraviolet lamp 130 according to the temperature of the evaporator 50 detected through the temperature sensor 140. It is for setting in the continuous mode (S70; see FIG. 3) which can turn on (! 30) continuously. The mode selection switch 150 is operated by a user, and is already programmed in the memory 111 of the controller 110 such that the automatic mode S60 or the continuous mode S70 is set alternately with each press. .

On the other hand, the control unit 110 after the start of the vehicle is detected through the start detection unit 160, the mode (automatic mode (S60) or continuous mode (S70)) set via the mode selection switch 150, UV lamp 130 ) To control the on / off, when the automatic mode (S60) is set to the on / off control of the ultraviolet lamp 130 according to the temperature change of the evaporator 50 detected through the temperature sensor 140, If the continuous mode (S70) is set to continuously control the ultraviolet lamp 130.

In addition, when the vehicle is turned on, the controller 110 initially turns on the ultraviolet lamp 130 for a predetermined time regardless of whether the mode is set to sterilize the evaporator 50. Is programmed in (111). In the embodiment of the present invention was configured to enter the set mode after the ultraviolet lamp 130 continuously operated for 5 minutes, which is, when the vehicle is started, the evaporator 50 in the state that the bacteria and fungi can inhabit at room temperature To sterilize.

In addition, the output side of the controller 110, the display unit 180 (LCD) for visually confirming the operation mode and time to the user, and the oscillation transformer for driving the ultraviolet lamp 130 by receiving power from the vehicle battery 70 120 is connected. Since the oscillation transformer 120 has been described while describing the ultraviolet lamp 130, a detailed description thereof will be omitted.

Next, a control operation of the sterilization apparatus according to the present invention according to whether the vehicle is started (driving) will be described with reference to FIG. 3.

First, when the driver boards the vehicle and turns on the vehicle, it is determined whether the vehicle is started (S10).

When it is determined that the vehicle is started in the vehicle start determination step (S10), the controller 110 operates the timer 170 to obtain vehicle driving time information (S20), and the evaporator 50 constituting the vehicle air conditioning system. Carrying out the first step of driving the ultraviolet lamp 130 to sterilize (S30). At this time, the ultraviolet lamp 130 is driven by the power supplied from the oscillation transformer 120, the control unit 110 in the vehicle start determination step (S10) in the vehicle starting through the start detection unit 160 (on) ON), the oscillation transformer 120 is driven by receiving power from the vehicle battery 70.

In more detail, when the vehicle is turned on, the first driving step (S30) for driving the ultraviolet lamp 130 is primarily performed with the timer 170 driving, which is generated by the ultraviolet lamp 130. Bacteria and fungi on the surface of the evaporator 50 are sterilized by the sterilization wavelength, and thus cannot be inhabited. That is, the ultraviolet lamp 130 emits ultraviolet rays having a wavelength of approximately 180 to 450 nm.

Due to the ultraviolet light, electrons and electron holes are formed on the surface of the evaporator 50 to form hydroxy radicals (-OH) and super oxides having strong oxidation power. These hydroxy radicals and super oxides oxidize and decompose organic compounds into water and carbon dioxide. Therefore, when the ultraviolet lamp 130 is operated, the contaminants around the evaporator 50 are changed into harmless water and carbon dioxide gas. That is, since bacteria and odor molecules in the air are also organic compounds, they are oxidized / decomposed when irradiated to the ultraviolet lamp 130, so that the sterilized air can be supplied to the interior of the vehicle when the air conditioning system is activated.

The ramp primary driving step S30 proceeds until the vehicle driving time elapses the set time. That is, after the ramp primary driving step S30 is executed, the controller 110 determines whether the vehicle driving time has elapsed through the timer 170 (S40). If it is determined in the vehicle driving time determining step (S40) that the vehicle driving time has passed the set time, the controller 110 determines the mode set by the mode selection switch S50 (S50).

In the embodiment of the present invention, if it is determined that the vehicle driving time has passed 5 minutes in the vehicle driving time determination step (S40), it is programmed to execute the driving mode determination step (S50). 130 is driven for about 5 minutes because the entire evaporator 50 is sterilized. {In addition, although not shown in the flowchart of FIG. 3, when the vehicle startup is turned off before the driving mode determination step S50, the controller 110 is programmed to return to the vehicle startup determination step S10. This is because the vehicle running time is short and the pollution degree of the evaporator 50 is not only weak but already sterilized by the ultraviolet lamp 130.

Subsequently, when the driving mode determination step (S50) is carried out for more than 5 minutes, the UV lamp 130 intermittently in accordance with the mode set by the mode selection switch 150, that is, the temperature change of the evaporator 50. The automatic mode (S60) to turn on / off or the continuous mode (S70) to turn on the UV lamp 130 continuously.

First, a case in which the user sets the automatic mode S60 through the mode selection switch 150 will be described. In this case, the driving mode determination step (S50) is determined to be an automatic mode (S60) for controlling the on / off UV lamp 130 according to the temperature change of the evaporator 50, and thus the control unit 110 in the temperature detection sensor Primary temperature sensing step (S61) for detecting the temperature of the evaporator 50 through the 140, and determines whether the temperature of the evaporator 50 detected in the primary temperature detection step (S61) is 7 ℃ or more. The primary temperature determination step (S62) is executed. If it is determined that the temperature of the evaporator 50 is 7 ° C. or lower in the first temperature determination step S62 of the automatic mode S60, the lamp off step returns to the first temperature detection step 61 after turning off the ultraviolet lamp 130. (S66), on the other hand, if it is determined that the temperature of the evaporator 50 is 7 ° C. or higher in the first temperature determination step (S62), the lamp secondary driving step (S63) for keeping the ultraviolet lamp 130 on is performed. To perform.

If the temperature is less than 7 ℃ in the first temperature determination step (S62), the cooling unit of the vehicle air conditioning system is started within 5 minutes of the vehicle running time, the temperature of the evaporator 50 drops to 7 ℃ or less, at 7 ℃ or less additional bacteria And since mold growth is rarely made is to perform a ramp-off step (S66).

As described above, 7 ° C. as the reference temperature in the first temperature determination step (S62) is because, as described above, when the temperature is 7 ° C. or higher, it is a temperature condition in which bacteria and mold can propagate around the evaporator 50. .

In addition, when the temperature is 7 ° C. or higher in the first temperature determination step S62, the second lamp driving step S63 may be performed to further sterilize the vicinity of the evaporator 50 by keeping the ultraviolet lamp 130 on. That is, the secondary lamp driving step S63 continuously powers the ultraviolet lamp 130 turned on in the lamp primary driving step S61 when the evaporator 50 temperature is 7 ° C. or higher in the first temperature judging step S62. Is to start by supplying.

Subsequently, after the lamp secondary driving step S63, the secondary temperature sensing step S64 for sensing the temperature of the evaporator 50 through the temperature sensor 140, and the secondary temperature sensing step S64. The secondary temperature determination step (S65) to determine whether the evaporator 50 temperature is below 5 ℃ is performed.

If the secondary temperature determination step (S65) 5 ℃ or more in the second temperature sensing step (S64) again, if less than 5 ℃ to perform the lamp off step (S66) and then to the primary temperature sensing step (S61) Go back. That is, when the temperature is 5 ° C. or lower in the second temperature determination step (S65), the vehicle running time exceeds 5 minutes and the cooling unit of the vehicle air conditioning system is sufficiently started so that the temperature of the evaporator 50 falls below 5 ° C., and the evaporator ( Even if a lot of water droplets are formed in 50), the lampoff step (S66) is performed at 5 ° C. or less, since bacteria and mold growth are hardly achieved.

On the other hand, if it is detected that the vehicle start is turned off through the start detection unit 160 while performing the automatic mode (S60), although not shown in the flow diagram of FIG. Ramp 3rd driving step is performed. In other words, if the vehicle runs for more than 5 minutes, a lot of water droplets will be formed on the surface of the evaporator 50. If the vehicle air conditioning system is stopped while the vehicle is turned off in this state, bacteria and mold may spread on the evaporator 50. Conditions are formed.

Therefore, when the vehicle is turned off after 5 minutes of driving, the ultraviolet lamp 130 is turned off after being turned on for a predetermined time (set to 10 minutes in the embodiment of the present invention). Therefore, even after the vehicle is turned off, the UV lamp 130 is further operated for 10 minutes to completely sterilize bacteria and molds that may inhabit the surface of the evaporator 50.

Next, a case in which the user sets the continuous mode (S70) through the mode selection switch 150 will be described. In this case, the driving mode determination step (S50) is determined to be a continuous mode (S70) for continuously turning on the ultraviolet lamp 130 irrespective of the temperature change of the evaporator (50), so that the controller 110 drives the lamp primary The lamp-on holding step (S71) for continuously turning on the ultraviolet lamp 130 turned on in step (S30), and whether the start of the vehicle is turned off through the start detection unit 160 after the lamp-on holding step (S71). If the vehicle off determination step (S72) and the vehicle off determination step (S72) is determined that the vehicle start-up is turned off, the additional lamp driving step (S73) for turning off the ultraviolet lamp 130 for a predetermined time and then off. do.

The continuous mode S70 is for sterilizing the evaporator 50 continuously while the vehicle is started. When the vehicle is judged to be turned on in the vehicle off determination step S72 of the continuous mode S70, the lamp is turned on. The on holding step S71 is continuously maintained.

The lamp addition driving step S73 is substantially the same as the lamp third driving step of the automatic mode S60 described above. In other words, when the vehicle is turned off after driving for more than 5 minutes, the ultraviolet lamp 130 is turned on after a predetermined time (set to 10 minutes in the embodiment of the present invention). Therefore, after the vehicle is turned off, the evaporator 50 is further irradiated for 10 minutes through the ultraviolet lamp 130 to completely sterilize the bacteria and fungi that may inhabit here.

As such, the vehicle can be completely sterilized around the evaporator 50 before the engine is turned on for more than 5 minutes, and the evaporator 50 and its surroundings are completely sterilized even when the vehicle is turned off. Therefore, even if the cooling unit is immediately driven by turning on the vehicle, it is possible to supply comfortable air to the interior of the vehicle.

In addition, when the ultraviolet lamp 130 is driven in the automatic mode (S60) or continuous mode (S70) while the vehicle is running, various organic substances mixed in the air around the evaporator 50 and passing through the cooling duct 31 are decomposed, I can always keep the air in a vehicle comfortable.

As described in detail above; According to the evaporator sterilizer of the vehicle air conditioning system and a control method thereof; As the evaporator of the vehicle air conditioning system in which mold and bacteria can inhabit is sterilized according to a program stored in the memory of the controller, there is always an effect of supplying sterilized air to the interior of the vehicle.

In addition, there is an advantage that can effectively control the ultraviolet lamp according to the temperature conditions of the evaporator. In addition, the present invention can of course be used in conjunction with the vehicle air conditioning system control apparatus.

Claims (9)

An evaporator sterilizer 100 of a vehicle air conditioning system for sterilizing an evaporator 50 of a vehicle air conditioning system according to whether a vehicle is started; The evaporator sterilizer 100 is; A start detection unit 160 connected to IG1, which is a power line required to start the vehicle, to detect whether the vehicle is started; An ultraviolet lamp 130 installed around the evaporator 50 and driven by the power of the vehicle battery 70; A temperature sensor 140 installed around the evaporator 50 to detect a temperature of the evaporator 50; According to the temperature of the evaporator 50 sensed by the temperature sensor 140, the automatic mode (S60) capable of turning on / off the UV lamp 130 and the UV lamp 130 are continuously turned on. A mode selection switch 150 for setting to a continuous mode (S70); After the start of the vehicle is detected through the start detecting unit 160, the on / off control of the ultraviolet lamp 130 is controlled in the mode set through the mode selection switch 150, but is set to the automatic mode (S60). In this case, the ultraviolet lamp 130 is turned on / off according to the temperature change of the evaporator 50 detected by the temperature sensor 140, and when the continuous lamp (S70) is set, the ultraviolet lamp 130 is A controller 110 for continuously turning on; Evaporator sterilization apparatus of a vehicle air conditioning system characterized in that it comprises. The method of claim 1, The evaporator sterilizer 100 further includes a timer 170 that is driven when the vehicle start is detected through the start detection unit 160 to measure the vehicle running time; The controller 110 continuously turns on the ultraviolet lamp 130 for a set time with the operation of the timer 170, and after the set time passes, the ultraviolet light in the mode set by the mode selection switch 150. Evaporator sterilizer of the vehicle air conditioning system, characterized in that for controlling the on / off of the lamp (130). The method according to claim 1 or 2, The controller 110 continuously turns on the ultraviolet lamp 130 when the ambient temperature of the evaporator 50 detected by the temperature sensor 140 during the automatic mode S60 is 7 ° C. or more. And, the evaporator sterilization apparatus of the vehicle air conditioning system, characterized in that the UV lamp 130 is off if less than 7 ℃. The method of claim 2, The vehicle control unit 110, the vehicle air conditioning, characterized in that after the vehicle running time has passed the set time, the ultraviolet lamp 130 is additionally turned on for a predetermined time and then the ultraviolet lamp 130 is turned off Evaporator sterilizer of the system. In order to sterilize the evaporator 50 of the vehicle air conditioning system, the sterilizer 100 having the ultraviolet lamp 130 and the temperature sensor 140 disposed around the evaporator 50 is controlled according to whether the vehicle is started. In the method; A vehicle startup determination step (S10) for determining whether the vehicle startup is on; When it is determined in the vehicle start determination step (S10) that the vehicle is started, the timer is driven to check the running time of the vehicle (S20), and the ultraviolet lamp 130 to sterilize the evaporator 50 first. Lamp primary driving step (S30) to turn on; A vehicle driving time determining step (S40) of controlling the UV lamp 130 to be continuously turned on until the vehicle driving time passes after the ramp primary driving step (S30); When it is determined in the vehicle driving time determination step (S40) that the vehicle driving time has passed the set time, the ultraviolet lamp 130 according to the temperature change of the evaporator 50 detected by the temperature sensor 140 A driving mode determination step (S50) of determining whether to perform the automatic mode (S60) set to be turned on or off or to perform the continuous mode (S70) set to continuously turn on the ultraviolet lamp (130); Evaporator sterilizer control method of a vehicle air conditioning system comprising a. The method of claim 5, A primary temperature sensing step S61 of detecting a temperature of the evaporator 50 through the temperature sensing sensor 140 when it is determined that the automatic mode S60 is determined in the driving mode determining step S50; Further performing a first temperature determination step (S62) of determining whether the temperature of the evaporator (50) detected in the first temperature detection step (S61) is 7 ° C. or more; When it is determined that the temperature of the evaporator 50 is 7 ° C. or less in the first temperature determination step S61, the UV lamp 130 is turned off and then the lamp off step returns to the first temperature detection step S61. S66); When the temperature of the evaporator 50 is determined to be 7 ℃ or more in the first temperature determination step (S62), the lamp secondary drive step (S63) for maintaining the ultraviolet lamp 130 in the on state; Evaporator sterilizer control method for a vehicle air conditioning system, characterized in that performed. The method of claim 6, A secondary temperature sensing step S64 of sensing the temperature of the evaporator 50 through the temperature sensing sensor 140 while performing the lamp secondary driving step S63; Further performing a second temperature determining step (S65) of determining whether the temperature of the evaporator is 5 ° C. or less after the second temperature detecting step (S64); When it is determined that the temperature of the evaporator 50 is 5 ° C. or more in the second temperature determination step S65, the process returns to the lamp secondary driving step S63, and the temperature of the evaporator 50 is determined to be 5 ° C. or less. When the ramp off step (S66) is performed after the first temperature detection step (S61) characterized in that the evaporator sterilizer control method of the vehicle air conditioning system. The method according to claim 5 or 6, If the vehicle is turned off in the step of executing the automatic mode (S60) after the driving mode determination step (S50), further executes the third lamp driving step of turning off the UV lamp 130 after a predetermined time. Evaporator sterilizer control method of a vehicle air conditioning system, characterized in that. The method of claim 5, If it is determined that the continuous mode (S70) in the driving mode determination step (S50); A lamp-on holding step (S71) of continuously turning on the ultraviolet lamp 130 turned on in the lamp primary driving step (S30); A vehicle off determination step (S72) of determining whether vehicle startup is off after the ramp-on maintenance step (S71); When it is determined that the vehicle start is turned on in the vehicle off determination step S72, the process returns to the lamp on maintaining step S71, and when it is determined that the vehicle start is turned off in the vehicle off determination step S72, the ultraviolet lamp 130 A lamp additional driving step (S73) for further turning off the lamp for a predetermined time; Evaporator sterilizer control method for a vehicle air conditioning system, characterized in that for executing.

Images