JP2014012432A - Vehicle air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air conditioner enabling improvement of sterilization and deodorization performance of a seat, a ceiling, and other interior members.SOLUTION: A vehicle air conditioner includes: an air conditioning unit 10 that is mounted on a vehicle, forms an air blow by an air blower 31, blows the air blow from each air outlet 15, 16, 17 to a cabin RM and can cool the air blow at least by an evaporator 32; a drain water retaining portion 11f that is installed in the air conditioning unit 10 and retains drain water dw caused by dew formation on the evaporator 32; an ozone generator 41 that generates ozone and causes the drain water dw in the drain water retaining portion 11f to include the ozone to form ozone water; and spraying means 50 for spraying the ozone water retained in the ozon water retaining portion 11f from a vent outlet 15.

Description

  The present invention relates to a vehicle air conditioner, and more particularly to a device having a deodorizing and sterilizing function using ozone.

Conventionally, a vehicle air conditioner that performs deodorization and sterilization with ozone is known (see, for example, Patent Document 1).
This prior art aims to deodorize and disinfect the air conditioning unit including the evaporator and the passenger compartment, and an ozone generator is installed at a downstream position of the evaporator in the air conditioning unit.
In this prior art, when deodorizing and sterilizing the air conditioning unit, the air blowing of the air conditioning unit is stopped and the ozone generator is operated with the air outlet closed, and ozone is generated inside the air conditioning unit. generate. Thereby, the generated ozone can be deodorized and sterilized inside the air conditioning unit without blowing out into the passenger compartment.
In addition, when performing deodorization and sterilization in the passenger compartment, after detecting that there are no passengers in the passenger compartment, the ozone generator is activated, the blower is activated, and the generated ozone is supplied to the passenger compartment, Deodorization and sterilization in the passenger compartment can be performed.

JP 2011-105257 A

  However, since the conventional vehicle air conditioner supplies the generated ozone into the vehicle interior by blowing air during the deodorization and sterilization of the vehicle interior, even if the air in the vehicle interior can be deodorized, It is difficult to penetrate the interior of the interior member such as the seat, the ceiling, and the like, and it is difficult to remove the bacteria and odor that have soaked into the interior of the seat and the interior member.

  The present invention has been made paying attention to the above-described conventional problems, and an object thereof is to provide a vehicle air conditioner that can improve the sterilization and deodorization performance of seats, ceilings, and other interior members.

In order to achieve the above object, the vehicle air conditioner of the present invention includes:
An air conditioning unit that is mounted on a vehicle, blows air from a blower outlet to the passenger compartment, and can cool the air flow by at least an evaporator,
A drain water storage unit that is provided in the air conditioning unit and stores drain water due to condensation of the evaporator, and an ozone generator that generates ozone by adding ozone to the drain water of the drain water storage unit. When,
Spray means for spraying ozone water stored in the drain water storage section from the outlet;
It was set as the vehicle air conditioner characterized by providing.

In the vehicle air conditioner of the present invention, ozone water is injected from the air outlet of the air conditioning unit toward the passenger compartment by the spraying means, so that the ozone water penetrates into the seat and the interior member.
Therefore, it is possible to remove bacteria and odors that have soaked into the seat and the interior material as compared with the case where ozone is simply supplied to the passenger compartment by blowing air, and the sterilization and deodorization performance can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is whole structure explanatory drawing which shows the vehicle air conditioner of embodiment. It is a longitudinal cross-sectional view which shows the air conditioning unit of the vehicle air conditioner of embodiment. It is a flowchart which shows the flow of the execution determination process in the vehicle air conditioner of embodiment. It is a flowchart which shows the flow of the used power supply determination process in the vehicle air conditioner of embodiment. It is a flowchart which shows the flow of the forced stop process in the vehicle air conditioner of embodiment. It is a flowchart which shows the flow of the unmanned deodorizing process in the vehicle air conditioner of embodiment. It is a flowchart which shows the flow of the forced exhaustion process in the vehicle air conditioner of embodiment. It is a flowchart which shows the flow of the window opening ventilation process in the vehicle air conditioner of embodiment.

Hereinafter, a vehicle air conditioner according to an embodiment of the present invention will be described with reference to FIGS.
(Constitution)
The vehicle air conditioner according to the embodiment is installed in an air conditioning unit 10 mounted on the vehicle MB shown in FIG.
The air conditioning unit 10 has a well-known structure. The housing 11 of the air conditioning unit 10 has an intake portion 11a for taking in air from the passenger compartment RM and the outside of the vehicle, and a desired temperature by cooling and heating the air taken inside. And a vent outlet 11c, a differential outlet 11d, and a floor outlet 11e for blowing the temperature-adjusted air to the passenger compartment RM.

The intake portion 11a is provided with an intake door 12 that switches between an outside air introduction state and an inside air introduction state. The intake door 12 is switched and driven by an intake door actuator 21.
Moreover, the air blower 31 which forms the ventilation from the intake part 11a to each blowing part 11c-11e is provided in the intake part 11a.

The vent outlet 11c is provided with a center and a side vent outlet 15 at the tip for blowing air toward the upper body of the front seat occupant.
The differential outlet 11d is provided with a defroster outlet 16 at the tip for blowing air toward the vehicle front window glass.
The floor outlet 11e is provided with a foot outlet 17 at the tip for blowing air toward the feet of the front seat occupant.

  Each outlet 11c, 11d, 11e is provided with outlet doors 13a, 13b, 13c for opening and closing these outlets 11c, 11d, 11e. The outlet doors 13 a to 13 c are switched and driven by driving the outlet door actuator 22.

  Further, as is well known, the evaporator 32 and the heater core 33 shown in FIG. 2 are arranged in series in the temperature adjusting unit 11b with respect to the air blowing. In addition, the temperature adjusting unit 11 b is provided with a bypass path 34 in parallel with the heater core 33, and an air mix door 35 that adjusts the air flow rate in the bypass path 34.

Next, a configuration for deodorization and sterilization in the vehicle air conditioner of the embodiment will be described.
As shown in FIG. 1, an ozone generator 41 is installed in the intake portion 11 a of the housing 11, and a deodorizing filter 42 for blowing and deodorizing is installed between the ozone generator 41 and the blower 31. Has been.
The ozone generator 41 generates ozone, which is an oxidative deodorant, and releases the generated ozone to the intake portion 11a. The operation of the ozone generator 41 is controlled by a control unit 100 described later.

  The deodorizing filter 42 is a filter having a deodorizing function and has a function of decomposing ozone. For example, an activated carbon filter or one carrying a metal oxide having ozonolysis activity can be used.

As shown in FIG. 2, in the housing 11, a drain water storage portion 11 f that stores drain water dw that has condensed and dropped in the evaporator 32 is formed in the lower portion of the evaporator 32 downstream in the blowing direction.
A drain pipe 18 that passes through the floor panel 40 and discharges the drain water dw to the outside of the vehicle is connected to the bottom of the drain water storage portion 11f.

Furthermore, a drainage switching valve 43 that opens and closes the drain pipe 18 and switches between draining and storing drain water dw accumulated in the drain water storing unit 11f is provided at the bottom of the drain water storing unit 11f. The drainage switching valve 43 includes a switching actuator 43a that opens and closes the valve body 43b.
And the overflow pipe 19 is connected to the upper part of the drain water storage part 11f. That is, in the drain water dw stored in the drain water storage part 11f, an overflow pipe 19 is provided that discharges outside the vehicle via the drain pipe 18 when the water level exceeds the set water level.

  Moreover, between the drain water storage part 11f and the vent blower part 11c, the spray means 50 which sprays the ozone water mentioned later stored in the drain water storage part 11f from the vent blower outlet 15 is provided.

The spray means 50 includes a water absorption pipe 51 and a humidifier 52.
The water absorption pipe 51 communicates the drain water storage part 11f and the vent blowing part 11c, and allows the drain water dw (ozone water) to be pumped up to the vent blowing part 11c by a capillary phenomenon. Filled with materials that can obtain capillary action.

The humidifier 52 is provided at the tip of the water suction pipe 51 and is disposed in the vent outlet 11c, and drain water dw (ozone water) sucked up by the water suction pipe 51 by the venturi effect due to the negative pressure of the air passing through the vent outlet 11c. Is sprayed into the passenger compartment RM.
The water absorption pipe 51 is provided with an opening / closing valve (not shown) that opens and closes the flow path. In the present embodiment, the opening / closing valve not shown is incorporated in the humidifier 52, and the humidifier 52 is opened when the normally closed opening / closing valve not shown is opened by the control unit 100 described later. 52 can perform the spraying operation.

Further, in the present embodiment, as shown in FIG. 1, in addition to a vehicle battery 61 that is mounted on the vehicle and serves as a power source for the vehicle MB, a dedicated deodorizing battery 62 for deodorizing and sterilizing is mounted on the vehicle MB. Has been. In the present embodiment, the vehicle MB is applied to a vehicle having a high battery capacity such as an electric vehicle or a hybrid vehicle.
The battery switching unit 63 switches between the vehicle battery 61 and the deodorizing battery 62 as a power source.

  The ozone generator 41, the switching actuator 43a of the drainage switching valve 43, the intake door actuator 21, the blowout door actuator 22, the blower 31, the humidifier 52, the battery switching unit 63, and a power window, which will be described later, included in the vehicle air conditioner described above. The actuator 23 and the display device 24 are operated by the control unit 100 shown in FIG.

  The power window actuator 23 is an existing actuator that opens and closes a window (not shown) of the vehicle MB. The display device 24 displays the operating state of the vehicle air conditioner, and is installed on an instrument panel in which the vehicle MB is not shown.

  The control unit 100 executes control described later based on a signal input from the sensor group 200. Note that an ignition switch 101 is connected to the control unit 100.

  The sensor group 200 includes a door lock sensor 211 as an occupant detection means 210, a seat belt sensor 212, a seating sensor 213, a door open sensor 214, an infrared sensor 215, a radio wave type unlocking controller 216, a vibration sensor 217, and a moving object detection. A device 218 is included, and a window sensor 220, an ozone concentration sensor 230, a rainfall sensor 240, a deodorizing operation switch 250, and a voltage sensor 260 are further included.

The door lock sensor 211 is an existing sensor that detects that a door (not shown) of the vehicle MB is closed and a door lock device (not shown) is in a locked state.
The seat belt sensor 212 is an existing sensor that detects that an occupant wears a seat belt (not shown).
The seating sensor 213 is a sensor that detects that an occupant is seated on a seat that is not shown, and is an existing sensor that detects seating based on detection of pressure and load in a seat cushion that is not shown.
The door open sensor 214 is an existing sensor that detects that a door (not shown) is open.
The infrared sensor 215 is a sensor that detects whether or not a person or an animal is present in the vehicle by infrared radiation in the passenger compartment RM or heat (infrared ray) generated by a person or the like.
The radio wave type lock / unlock controller 216 is a remote control operation part of an automatic lock / unlock system called so-called intelligent key, and is located near the vehicle MB in addition to transmitting / receiving lock / unlock signals and ID signals. It can be determined whether or not.
The vibration sensor 217 is a sensor that detects whether or not vibration is generated in the vehicle body.
The moving object detection device 218 detects whether or not there is a moving object (human, animal) within a certain range inside or outside the vehicle. A field sensor, a moving object sensor, a millimeter wave radar, an ultrasonic sensor, a matrix infrared sensor Cameras, security devices, etc. can be used.

The window sensor 220 detects whether or not a window (not shown) provided in the power window actuator 23 is open, or whether or not the opening degree of the window is a set value or more.
The ozone concentration sensor 230 is provided in the passenger compartment RM and detects the ozone concentration in the passenger compartment RM.
The rain sensor 240 detects rain, and detects the humidity of the front window (not shown), detects optical changes caused by rain drops, and detects sound and vibration of the vehicle body due to rain drops. Etc. can be used.
The deodorization operation switch 250 is a switch for switching permission / prohibition of performing unattended deodorization processing described later when getting off the vehicle.
The voltage sensor 260 is a sensor that detects voltages of the vehicle battery 61 and the deodorizing battery 62.

Below, based on the flowchart of FIGS. 3-8, the process performed in the control unit 100 is demonstrated.
The control unit 100 executes an execution determination process, a power supply determination process, a forced stop process, an unattended deodorization process, a forced exhaust process, and a window opening ventilation process.
The execution determination process is a process for determining the execution start of the unattended deodorization process.
The unmanned deodorization process is a process for deodorizing and sterilizing the passenger compartment RM after the passenger gets off the vehicle MB.
The forced stop process is a process for canceling the unattended deodorization process when the execution condition of the unattended deodorization process is not established.
The forced exhaust process is a process for forcibly exhausting ozone from the passenger compartment RM when the execution of the unattended deodorization process is stopped.
The window opening ventilation process is a process for ventilating the air in the passenger compartment RM after the unmanned deodorization process.

  Hereinafter, the execution determination process, the power supply determination process, the forced stop process, the unattended deodorization process, the forced exhaust process, and the window opening ventilation process will be described in order.

The execution determination process determines the execution timing of the above-described unmanned deodorization process, and the unattended deodorization process is executed when the ignition switch 101 is switched from ON to OFF.
Therefore, this execution determination process is started when unattended deodorization is selected by the deodorizing operation switch 250 (ON) and the ignition switch 101 is turned ON (S1). In the next step S2, the switching actuator is selected. After performing the output which closes the drainage switching valve 43 to 43a, it progresses to step S3. That is, when the vehicle MB starts to travel, the drainage switching valve 43 is closed, and the drain water can be stored in the drain water storage part 11f.
In step S3, it is determined whether or not the ignition switch 101 has been switched off. If the ignition switch 101 has not been switched off, the determination in step S3 is repeated, and if it has been switched off, the process proceeds to step S4.
In step S4 that proceeds when the ignition switch 101 is switched OFF, the unmanned deodorization mode for executing the unmanned deodorization process is turned on, and then the process proceeds to the power supply determination process of S100. That is, when the traveling of the vehicle MB is finished and the ignition switch 101 is turned off, the unmanned deodorizing process mode is turned on, and the start of the unmanned deodorizing process is prepared.

  Next, the power use determination process in step S100 will be described based on the flowchart of FIG. In this power use determination process, in step S11, it is determined whether or not the voltage of the vehicle battery 61 is insufficient based on the output of the voltage sensor 260. If the voltage of the vehicle battery 61 is not insufficient, step S12 is performed. If the voltage is insufficient, the process proceeds to step S13.

In step S12 that proceeds when the voltage of the vehicle battery 61 is not insufficient, the battery switching unit 63 switches the power source to the vehicle battery 61 and then proceeds to unattended deodorization processing.
On the other hand, in step S13 that proceeds when the voltage of the vehicle battery 61 is insufficient, it is determined whether or not the voltage of the deodorizing battery 62 is insufficient. If the voltage of the deodorizing battery 62 is not insufficient, After proceeding to step S14 and switching the power source to the deodorizing battery 62, the process proceeds to step S300 unattended deodorizing process. When the voltage of the deodorizing battery 62 is insufficient, the process proceeds to forced stop process of step S200.

  That is, when the unmanned deodorizing process is executed, if the voltage of the vehicle battery 61 is sufficient, the vehicle battery 61 is used as a power source, and if the voltage of the vehicle battery 61 is insufficient, the deodorizing battery 62 is used as a power source. If the voltages of the batteries 61 and 62 are insufficient, the unattended deodorizing process is not executed.

  In the forcible stop process in step S200, as shown in FIG. 5, first, the process proceeds to step S21, “(unmanned) deodorization process cannot be performed” is displayed on the display device 24, and then the process proceeds to step S22. In step S22, the drainage switching valve 43 is opened and the control is terminated. The drain water dw stored in the drain water storage part 11f by opening the drain switching valve 43 is drained outside the vehicle.

Next, the unmanned deodorization process in step S300 will be described based on FIG.
In the unmanned deodorization process, it is determined whether or not there is a human or an animal in the passenger compartment RM based on the determination in steps S31 to S38 based on the output of the occupant detection means 210. If it is determined that there is no human or an animal, step S40a is performed. Go to step 4 and start unattended deodorization.

If all the determinations in steps S31 to S38 in the determination as to whether or not there are no humans or animals in the passenger compartment RM, it is determined that there are no humans or animals in the passenger compartment RM. Hereinafter, these determinations will be specifically described.
First, in step S31, it is determined based on the output of the door lock sensor 211 whether or not the door lock device (not shown) is in the locked state. If the door lock device is in the locked state, the process proceeds to step S32. Proceed to forced exhaust process.
In step S32, based on the output of the seat belt sensor 212, it is determined whether the seat belt (not shown) is in a non-wearing state. If it is in a non-wearing state, the process proceeds to step S33. Proceed to exhaust treatment.
In step S33, it is determined based on the output of the seating sensor 213 whether or not a non-seat seat is in the seated state. If the seat is not seated, the process proceeds to step S34, and if it is seated, the forced exhaust process in step S600 is performed. move on.
In step S34, it is determined whether or not a door (not shown) is closed based on the output of the door open sensor 214. If it is closed, the process proceeds to step S35, and if it is not closed, the process proceeds to the forced exhaust process in step S600. .
In step S35, it is determined whether or not body temperature is detected in the passenger compartment RM based on the output of the infrared sensor 215. If there is no body temperature detection, the process proceeds to step S36, and if there is body temperature detection, the forced exhaust process in step S600 is performed. move on.
In step S36, it is determined whether or not the radio wave type unlocking controller 216 is approaching based on the output of the radio wave type unlocking controller (I-KEY) 216, and when the radio wave type unlocking controller 216 is not approaching. The process proceeds to step S37, and if there is an approach of the radio wave type unlocking controller 216, the process proceeds to the forced exhaust process of step S600. That is, this step S36 detects the approach of the occupant to the vehicle MB.
In step S37, it is determined whether or not there is vibration in the vehicle body based on the output of the vibration sensor 217. If there is no vibration, the process proceeds to step S38, and if vibration occurs, the process proceeds to the forced exhaust process in step S600. That is, in this step S37, it is determined whether or not an occupant or an animal is on the vehicle based on the vibration of the vehicle body.
In step S38, it is determined based on the output of the moving object detection device 218 whether or not there is a moving object in a certain range inside and outside the vehicle. In step S40a, if there is a moving object, the process proceeds to the forced exhaust process in step S600.

Next, the unmanned deodorization process after step S40a will be described.
In step S40a, it is determined whether or not the intake mode is the introduction of inside air, that is, whether the intake door is at the inside air introduction position. If inside air is introduced, the process proceeds to step S41a. If the inside air is not introduced, the process proceeds to step S40b. .
In step S40b, after the intake door actuator 21 is driven to switch the intake door 12 to the inside air introduction position, the process proceeds to step S41a.

In step S41a, it is determined whether or not the outlet mode is the vent mode. If the vent mode is selected, the process proceeds to step S42. Otherwise, the process proceeds to step S41b, and the outlet door actuator 22 is driven to open the vent outlet. After opening 15, the process proceeds to step S42. In this embodiment, when the vent outlet 15 is opened in step S41b, the defroster outlet 16 and the foot outlet 17 are closed to enter the vent mode, but at least the vent outlet 15 may be opened. .
In this embodiment, since the inside / outside air can be switched automatically, the processing of steps S40a and 40b is executed. However, if the inside / outside air switching cannot be performed automatically, this processing may be omitted. Good.

In step S42, the blower 31 is driven with a high air flow (Hi) and the humidifier 52 is turned on to open the valve, and then the process proceeds to step S43.
In step S43, it is determined whether or not the deodorization timer count is ON. If not, the process proceeds to step S44. After the deodorization timer count is started, the process proceeds to step S44. Proceed to step S45.

In step S45, after operating the ozone generator 41 with the maximum output, it progresses to step S46.
In step S46, it is determined whether or not the deodorization timer count has reached the deodorization operation set time (several hours and 8 hours in the present embodiment). If the deodorization operation set time has not been reached, unattended deodorization processing is performed. When the set time is reached, the process proceeds to forced stop processing. During the operation of the ozone generator 41, the ozone concentration in the vehicle is controlled so as not to exceed the occupational hygiene allowable range (Max: 0.1 ppm).

  Thus, in the unmanned deodorization process, the unattended deodorization process (S300) is continued until the deodorization operation set time elapses, and after the deodorization operation set time elapses, the forced stop process (S100) is performed to perform the unattended deodorization process. Exit. If occupant detection is performed during the unmanned deodorization process, the forced exhaust process of step S600 for forcibly exhausting the air containing ozone in the passenger compartment RM is executed.

  Next, the forced exhaust process in step S600 that is performed when occupant detection is performed during the unmanned deodorization process, that is, when NO is determined in any of steps S31 to S38 will be described with reference to the flowchart of FIG. To do.

In the forced exhaust process, first, the operation of the ozone generator 41 and the humidifier 52 is stopped (turned off) in step S60, and then the process proceeds to step S61.
In step S61, it is determined whether or not the operating time of the ozone generator 41 in the unattended deodorization process has exceeded a forced exhaust set time (for example, 30 seconds), which is a set time requiring forced exhaust. If the forced exhaust set time has been exceeded, The process proceeds to step S63, and if the forced exhaust set time is not exceeded, the process proceeds to step S62.
In step S62 that proceeds when the ozone generation time does not exceed the forced exhaust set time, the deodorization timer is reset, and then the process proceeds to an execution determination process. That is, it waits again for the execution determination of the unattended deodorizing process.

If the ozone generation time exceeds the forced exhaust set time in step S61, the process proceeds to step S63 to reset the deodorization timer, then proceeds to step S64, starts counting as the exhaust timer count is ON, and then proceeds to step S65.
That is, when the unattended deodorizing process is interrupted, the operation time of the ozone generator 41 is a short time that does not exceed the forced exhaust time, and when the vehicle compartment RM is not filled with ozone, the forced exhaust is not performed. Returning to the execution determination process, if the operating time of the ozone generator 41 exceeds the forced exhaust set time and there is a high possibility that the passenger compartment RM is full of ozone, based on the processes in and after step S65, Force exhaust.

  In step S65, it is determined whether or not there is rain based on the output of the rain sensor 240. If there is rain, the process proceeds to step S67. If there is no rain, the process proceeds to step S800 to start the window opening ventilation process. The window ventilation is executed in parallel with the forced ventilation process, and the process proceeds to step S67.

  In step S67, it is determined whether or not the blower 31 is driven with a strong air volume (Hi level). If the air volume is strong, the process proceeds to step S69. If the air volume is other than the strong air volume, the process proceeds to step S68. After switching to the strong air volume (Hi level), the process proceeds to step S69.

  In step S69, it is determined whether or not the suction mode of the air conditioning unit 10 is the outside air introduction mode, and processing according to the suction mode is performed. That is, if the suction mode is the outside air introduction mode in the determination in step S69, the process proceeds directly to step S74. If it is not in the outside air introduction mode, the process proceeds to step S70 in the auto mode. After the intake door actuator 21 is driven to switch the intake door 12 to the outside air introduction position, the process proceeds to step S74.

   On the other hand, if the inhalation mode is the manual mode in step S69, the process proceeds to step S71 to display a warning message indicating that ventilation cannot be performed by the display device 24, and further proceeds to step S72 to determine whether or not the deodorizing operation switch 250 is OFF. If the deodorization operation switch 250 is OFF, the process proceeds to an execution determination process. If the deodorization operation switch 250 is not OFF, the process proceeds to step S73. In step S73, it is determined whether or not the ignition switch 101 is OFF. If the ignition switch 101 is OFF, the control is terminated. If the ignition switch is not OFF, the process returns to step S72, and the deodorizing operation switch 250 is determined. OFF and the ignition switch 101 OFF determination are repeated.

  In step S74 that proceeds when the intake door 12 is introduced with outside air, it is determined whether or not the operation time of the blower 31 by the forced exhaust process is equal to or longer than the exhaust operation set time (for example, 60 sec) based on the count of the exhaust timer. If it is longer than the exhaust operation set time, the process proceeds to step S75. If the exhaust operation set time is not reached, step S74 is repeated.

  In step S75, based on the output of the ozone concentration sensor 230, it is determined whether or not the ozone concentration in the passenger compartment RM is equal to or lower than a preset exhaust end set concentration (for example, 0.01 ppm), and below the exhaust end set concentration. In this case, the process proceeds to step S77, and if larger than the exhaust end set concentration, the process proceeds to step S76, the exhaust timer is reset, the count is restarted from 0, and the process returns to step S74.

  That is, in the forced exhaust process, exhaust is performed until the operation time (exhaust time) of the blower 31 exceeds the exhaust operation set time, and the ozone concentration after exhaust exceeding this exhaust operation set time is the exhaust end setting. If the concentration is not lower than the concentration, the exhaust for the exhaust operation set time is repeated again.

  After that, in step S77 that proceeds when the ozone concentration is equal to or lower than the exhaust end set concentration in the determination in step S75, the blower 31 is stopped, and then the process proceeds to step S78 to reset the exhaust timer and return to the execution determination process. .

Next, the window opening ventilation process of step S800 started when there is no rain in step S65 will be described based on the flowchart of FIG.
In this window opening ventilation process, first, in step S80, it is determined whether or not a window (not shown) is open based on the output of the window sensor 220. If the window is open, the window opening ventilation process is performed. If the window is not opened, the process proceeds to step S81, the power window actuator 23 is driven to slightly open the window, and the process proceeds to step S82.

In step S82, it is determined whether there is rainfall based on the output of the rain sensor 240. If there is rain, the process proceeds to step S84, and if there is no rain, the process proceeds to step S83.
In step S83, it is determined whether or not the forced exhaust process in step S600 has been completed. If completed, the process proceeds to step S84, and if not, the process returns to step S82.
In step S84, after the power window actuator 23 is driven to close the window, the window opening ventilation process is terminated.

  That is, in the window opening ventilation process in step S800, if there is no rain when the forced exhaust process is executed, the window is opened to promote ozone exhaust. Moreover, the window opening by the window opening ventilation process is stopped and the window closing process is performed when the forced exhaust process ends or when rain is detected during the forced exhaust process.

(Function)
Next, the operation of the first embodiment will be described.
<Driving>
When performing unattended deodorization by the vehicle air conditioner of the present embodiment, the driver turns on the deodorization operation switch 250 during traveling.
In this case, when the ignition switch 101 is turned on and the deodorizing operation switch 250 is turned on, the drainage switching valve 43 is closed (step S2), and air conditioning is performed during traveling, whereby the drain water storage section of the air conditioning unit 10 shown in FIG. The drain water dw is stored in 11f.
The drain water dw is stored until the drain water storage portion 11f becomes full. After the drain water dw is full, excess drain water dw is drained outside the vehicle via the overflow pipe 19.

<When parking>
After that, when the vehicle is parked and the ignition switch 101 is turned off, the unattended deodorization mode is turned on (S4), and first, the power source is selected (used power source determination process). That is, basically, the vehicle battery 61 is used as the power source, and when the voltage of the vehicle battery 61 is insufficient, the deodorizing dedicated battery 62 is used as the power source. Further, when the voltage of the deodorizing battery 62 is not sufficient, the unattended deodorizing process is not performed, the forced stop process is performed, the drainage switching valve 43 is opened, and is stored in the drain water storage unit 11f. The drain water dw is discarded.

On the other hand, when there is sufficient voltage in either of the batteries 61 and 62, unattended deodorization processing is executed, and when the occupant and the animal get off and the door and window are closed, ozone water is sprayed into the passenger compartment RM. .
That is, by the processing of steps S31 to S38, there is no occupant or animal in the passenger compartment RM, the occupant returns to the vehicle MB in the middle of the unmanned deodorizing process, or there is a moving object around the vehicle MB. If not, unattended deodorization processing is executed and continued.

In this unmanned deodorization process, the air intake unit 10 is set to the inside air introduction mode, the vent outlet 15 is opened (S40a, 40b to S41a, 41b), and the blower 31 is driven with a high air flow, and the humidifier 52 is opened (S42), and the ozone generator 41 is driven (S45).
Therefore, the ozone generated by the ozone generator 41 is first supplied to the deodorizing filter 42 to deodorize unpleasant odors, tobacco odors and the like attached to the deodorizing filter 42, and sterilize various bacteria including influenza bacteria. Can be achieved.

Further, the ozone that has passed through the deodorizing filter 42 passes through the evaporator 32, reaches the temperature adjusting unit 11b, and dissolves in the drain water dw. In this case, ozone water having higher oxidizing power than gaseous ozone is formed by ventilating ozone that has passed through the evaporator 32. Further, immediately after the stop of the vehicle MB, the dew condensation water adheres to the evaporator 32 and falls to the drain water storage portion 11f, so that the ozone dissolved in this dew condensation water also dissolves in the drain water dw.
In the air conditioning unit 10, the ozone being blown generated by the ozone generator 41 is adsorbed in the air conditioning unit 10 and disappears before reaching the vent outlet 15.

  On the other hand, the drain water dw in which ozone is dissolved is sucked up by the humidifier 52 through the water suction pipe 51 and sprayed from the vent outlet 15 to the vehicle compartment RM by the venturi effect due to the negative pressure of the air blown in the vent outlet 11c.

  Thus, ozone is sprayed as ozone water to deodorize and disinfect the passenger compartment RM. Moreover, since it is sprayed as ozone water in this way, it penetrates into fabric members such as sheets not shown in the figure and interior members, and is more efficient up to the interior of the interior members than simply releasing ozone air. Deodorization and sterilization can be performed well.

In this embodiment, this unattended deodorization process is performed for a preset operation setting time (for example, 8 hours), and is performed, for example, at night parking.
Then, when the unattended deodorizing process is finished after the operation set time has elapsed, the forced exhausting process is executed in the present embodiment.
This forced exhausting process is executed with the intake mode set to the introduction of outside air (S69) and with the window open (S800), the blower 31 is operated strongly (S67), and the exhaust operation setting time (for example, 60 sec) is executed. .

Therefore, outside air is introduced into the passenger compartment RM, and ozone in the passenger compartment RM is exhausted outside the vehicle by being exhausted from a window or the like.
The forced exhaust process is executed until the exhaust operation set time has elapsed (S74), and then ends when the ozone concentration in the passenger compartment RM falls below the exhaust end set concentration (S75 → S77). Further, when the ozone concentration in the passenger compartment RM has not decreased below the exhaust end set concentration, forced exhaust for the exhaust operation set time is executed again.

  Note that the window opening ventilation during the forced exhaust process is executed when there is no rain, and the window opening is not executed during the rain. Forcibly closes the window when rain occurs during the air treatment (S82 → S84).

(Effect of embodiment)
The vehicle air conditioner according to the embodiment described above has the following effects.
a) The vehicle air conditioner of the embodiment
An air-conditioning unit 10 that is mounted on a vehicle, forms air by the blower 31 and blows air from the outlets 15, 16, and 17 to the passenger compartment RM, and at least cools the air by the evaporator 32;
A drain water storage unit 11f that is provided in the air conditioning unit 10 and stores drain water dw due to condensation of the evaporator 32, and ozone is generated and ozone is contained in the drain water dw of the drain water storage unit 11f to form ozone water. Ozone generator 41,
Spray means 50 for spraying ozone water stored in the drain water storage part 11f from the vent outlet 15;
It is characterized by having.
In this way, compared with the case where ozone water is sprayed and stored, and ozone is included in the blast and supplied to the passenger compartment RM, the ozone easily permeates into the seats, ceiling and other interior members. A vehicle air conditioner capable of improving the deodorizing performance can be provided.
Moreover, since the ozone water is formed using the drain water dw resulting from the condensation of the evaporator 32, it is possible to save time and containers for filling water as compared with the case where it is filled with dedicated water, which is economical. Excellent.

b) The vehicle air conditioner according to the embodiment is characterized in that the ozone generator 41 is installed in the intake portion 11 a that takes in the inside and outside air of the air conditioning unit 10.
Therefore, compared with the conventional ozone generator 41 installed downstream of the evaporator, the generated ozone is less likely to reach the outside of the air conditioning unit 10, and ozone water is efficiently generated inside the air conditioning unit 10. Can be formed.

c) The vehicle air conditioner according to the embodiment is characterized in that a deodorizing filter 42 is provided in the intake portion 11a downstream of the ozone generator 41 in the blowing direction.
Therefore, the deodorizing filter 42 can be deodorized and sterilized by the ozone generated by the ozone generator 41, and the odor components adsorbed on the deodorizing filter 42 are decomposed. Therefore, it is possible to maintain the deodorizing performance of the deodorizing filter 42 for a long period of time as compared with a conventional ozone generator disposed downstream of the evaporator.

d) The vehicle air conditioner according to the embodiment is characterized in that the drain water storage unit 11f is arranged on the downstream side of the ventilation of the evaporator 32.
Therefore, ozone water having an oxidizing power higher than that of gaseous ozone is formed by passing the ozone that has passed through the evaporator through the drain water stored in the drain water storage section.

e) In the vehicle air conditioner according to the embodiment, the spray means 50 includes a water absorption pipe 51 that sucks ozone water formed in the drain water storage portion 11f into the vent outlet 15 by capillary action, and this water absorption The pipe | tube 51 is provided so that it can spray by the negative pressure of the ventilation in the vent blower outlet 15, It is characterized by the above-mentioned.
Therefore, a pump for pumping ozone water to the vent outlet 15 is unnecessary, and the cost, the number of parts, and the weight can be reduced.
In addition, in the present embodiment, the water absorption pipe 51 is filled with a material such as porous ceramic that allows the drain water dw (ozone water) to be pumped up to the vent outlet 11c by capillary action. It is possible to increase the pumping efficiency compared to pumping water by capillary action using only tubes.
In addition, in the embodiment, by providing the humidifier 52 that sprays the moisture of the water absorption pipe 51 by the negative pressure of the blower in the spray part of the water absorption pipe 51, the spray efficiency in accordance with the negative pressure of the blown air is provided in the spray part. As an excellent shape and caliber, it is possible to further improve the spray performance.
Furthermore, in the embodiment, since the humidifier 52 has an opening / closing valve function, it is possible to arbitrarily select the presence or absence of spraying when the vent blower 11c is blown. Accordingly, the open / close valve function can be closed during traveling to prevent the drain water accumulated in the drain water storage section 11f from being sprayed. Further, when it is desired to humidify the passenger compartment RM during traveling, or during unattended deodorization processing, the opening / closing valve function portion is selectively opened as necessary, and humidification is performed using the drain water dw. It is possible to perform unattended deodorization by water spray.

f) In the vehicle air conditioner of the embodiment, the drain water storage unit 11f is connected to a drain pipe 18 for discharging drain water to the outside of the vehicle, and includes a drainage switching valve 43 that opens and closes the drain pipe 18. In addition, an overflow pipe 19 is provided that flows into the drain pipe 18 and discharges outside the vehicle when the water level of the drain water storage section 11f exceeds the set water level.
Therefore, based on the switching of the drainage switching valve 43, when the drainage switching valve 43 is closed, it is possible to store a desired amount of drain water dw in the drain water storage part 11f, and drainage as necessary. If the switching valve 43 is opened, the drain water dw can be drained.

g) The vehicle air conditioner of the embodiment includes a control unit 100 that controls the operation of the air conditioning unit 10 and the ozone generator 41.
On the input side of the control unit 100, occupant detection means 210 for detecting the occupant is provided,
When the air conditioning unit 10 is in operation, the control unit 100 performs a process (S2) of closing the drain switching valve 43 and storing the drain water dw in the drain water storage unit 11f, and when there is no occupant in the passenger compartment RM, In addition to forming water (S45), unmanned deodorization treatment (S42) is performed in which ozone water is sprayed.
Therefore, the drain water dw is stored in the drain water storage part 11f during traveling, and no occupant is present, so that ozone water can be formed and sprayed.

h) In the vehicle air conditioner according to the embodiment, the control unit 100 determines whether or not the unattended deodorizing process is executed after the ignition switch 101 is switched from ON to OFF. When the preset execution condition is not satisfied, A forced stop process for opening the drainage switching valve 43 and discharging the drain water dw stored in the drain water storage section 11f is performed.
Therefore, when the unattended deodorizing process is not executed, the drain water dw can be discharged to reduce the humidity in the air conditioning unit 10 and to suppress the propagation of germs.

  As described above, the embodiment of the present invention and Examples 1 to 4 have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment and Examples 1 to 4. Design changes that do not depart from the gist of the present invention are included in the present invention.

For example, in the embodiment, a vent outlet is shown as an outlet for spraying ozone water, but the present invention is not limited to this, and any of a vent outlet, a defroster outlet, and a foot outlet may be used. In addition, as shown in the embodiment, any one of these outlets may be used, but two or more of these outlets may be used.
Further, in the embodiment, as a spraying means for spraying ozone water stored in the drain water storage part from the blower outlet, a water absorption pipe sucked up to the blower outlet by reducing the capillary, and a humidifier spraying by the venturi effect are shown. However, you may make it spray using mechanical means, such as a pump. Furthermore, when spraying by the venturi effect, the suction effect may be further enhanced by increasing the blowing speed or increasing the negative pressure, for example, by narrowing the opening degree of the outlet door and increasing the flow velocity of the blowing.
Moreover, although 8 hours was shown as an example of the time for executing the unattended deodorizing process in the embodiment, the time is not limited to this and may be several tens of minutes. In short, it is preferable to set a time that does not impose a burden on the battery as a power source. In a vehicle using an internal combustion engine other than the electric vehicle and the hybrid vehicle shown in the embodiment, it is preferable to shorten the execution time.
Further, in the embodiment, the power source has a vehicle battery and a deodorizing battery, but the power source is not limited to this, and a power source having only one of them may be used.

RM Car compartment 10 Air conditioning unit 11a Intake section 15 Vent outlet 16 Defroster outlet 17 Foot outlet 18 Drain pipe 19 Overflow pipe 31 Blower 32 Evaporator 41 Ozone generator 42 Deodorizing filter 43 Drain switch valve 50 Spray means 51 Water absorption pipe 52 Humidifier 100 Control unit 210 Occupant detection means

Claims (8)

An air conditioning unit that is mounted on a vehicle, blows air from a blower outlet to the passenger compartment, and can cool the air flow by at least an evaporator,
A drain water storage unit that is provided in the air conditioning unit and stores drain water due to condensation of the evaporator, and an ozone generator that generates ozone by adding ozone to the drain water of the drain water storage unit. When,
Spray means for spraying ozone water stored in the drain water storage section from the outlet;
A vehicle air conditioner characterized by comprising: In the vehicle air conditioner according to claim 1,
The vehicle air conditioner is characterized in that the ozone generator is installed in an intake portion that takes in the inside and outside air of the air conditioning unit. In the vehicle air conditioner according to claim 2,
The vehicle air conditioner, wherein the intake section is provided with a deodorizing filter on the downstream side in the air blowing direction of the ozone generator. In the vehicle air conditioner according to claim 2 or 3,
The said drain water storage part is arrange | positioned at the ventilation downstream of the said evaporator, The vehicle air conditioner characterized by the above-mentioned. In the vehicle air conditioner according to any one of claims 1 to 4,
The spraying means includes a water absorption pipe that sucks up the ozone water formed in the drain water storage portion into the air outlet by capillary action, and the water absorption pipe can be sprayed by the negative pressure of the air blown at the air outlet. A vehicle air conditioner provided in the vehicle. In the vehicle air conditioner according to any one of claims 1 to 5,
The drain water storage unit is connected to a drain pipe for discharging the drain water to the outside of the vehicle, and includes a drain switching valve for opening and closing the drain pipe, and the water level of the drain water storage unit exceeds a set water level. And an air-conditioning apparatus for vehicles, comprising an overflow pipe that flows through the drain pipe. The vehicle air conditioner according to claim 6,
A control unit for controlling the operation of the air conditioning unit and the ozone generator;
On the input side of this control unit is equipped with occupant detection means for detecting occupants,
When the air conditioning unit is in operation, the control unit performs a process of closing the drain switching valve and storing the drain water in the drain water storage section, and when the passenger is absent in the passenger compartment, An air conditioner for a vehicle characterized by performing unmanned deodorization treatment for forming and spraying the ozone water. The vehicle air conditioner according to claim 7,
The control unit performs execution determination of the unattended deodorization processing after the ignition switch is switched from ON to OFF, and when the execution condition set in advance is not satisfied, opens the drainage switching valve and opens the drain water storage unit. A vehicle air conditioner that performs a forced stop process for discharging ozone water stored in the tank.