WO2018116683A1

WO2018116683A1 - Air-conditioning device for vehicle

Info

Publication number: WO2018116683A1
Application number: PCT/JP2017/040445
Authority: WO
Inventors: 和明竹元; 河合　孝昌; 熊田　辰己; 尚敬石山
Original assignee: 株式会社デンソー
Priority date: 2016-12-19
Filing date: 2017-11-09
Publication date: 2018-06-28
Also published as: JP6583245B2; JP2018099937A

Abstract

The present disclosure provides an air-conditioning device for a vehicle, which is capable of reducing dust within the vehicle interior. This air-conditioning device (1) for a vehicle is provided with an air-conditioning duct (10), a filter (17), an air-conditioning unit (20), and a control unit (80). The filter collects dust contained in air flowing through the air-conditioning duct. The air-conditioning unit generates air-conditioning air using air introduced into the air-conditioning duct through an inside air suction opening and/or an outside air suction opening, the air-conditioning air being capable of air-conditioning the vehicle interior. The control unit controls the air-conditioning unit. The control unit performs stir-up control for controlling the air-conditioning unit so that dust accumulated on a floor within the vehicle interior is stirred up, and then the control unit executes inside air circulation control.

Description

Air conditioner for vehicles

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2016-245754 filed on December 19, 2016, and claims the benefit of its priority. Which is incorporated herein by reference.

The present disclosure relates to a vehicle air conditioner.

Conventionally, there is a vehicle air conditioner described in Patent Document 1. The vehicle air conditioner described in Patent Literature 1 starts the pollen mode immediately after the ignition switch is turned on. The pollen mode is an operation mode in which a blower outlet capable of blowing air near the occupant's face is selected from a plurality of blower outlets, and a predetermined amount of wind is blown from the selected blower outlet to the vicinity of the occupant's face. .

Japanese Patent No. 4311270

In the vehicle air conditioner described in Patent Document 1, when operating in the pollen mode, it is possible to remove pollen floating near the passenger's face in the passenger compartment, but dust and pollen deposited on the floor in the passenger compartment, It is difficult to remove dust such as particulate matter (PM). The dust accumulated on the floor in the passenger compartment may be lifted into the passenger compartment, for example, when an occupant gets on or off the vehicle or when air-conditioning air is blown out from the foot outlet of the air conditioner. When the dust flying from the floor in the passenger compartment is applied to the occupant, the occupant may be uncomfortable.

An object of the present disclosure is to provide a vehicle air conditioner capable of reducing dust in a passenger compartment.

The vehicle air conditioner according to an aspect of the present disclosure includes an air conditioning duct, a filter, an air conditioning unit, and a control unit. The air conditioning duct blows air that is taken in from at least one of an inside air suction port for taking in the inside air that is air inside the vehicle interior and an outside air suction port for taking in outside air that is outside the vehicle interior into the vehicle interior. The filter collects dust contained in the air flowing in the air conditioning duct. The air conditioning unit is provided in the air conditioning duct, and generates air conditioning air capable of performing air conditioning in the vehicle interior from air introduced into the air conditioning duct through at least one of the inside air suction port and the outside air suction port. The control unit controls the air conditioning unit. The control unit performs the air flow control for controlling the air conditioning unit so that the dust accumulated on the floor in the vehicle interior rises, and then performs the internal air circulation control for controlling the air conditioning unit so that the air circulates in the air conditioning duct and the vehicle interior. Execute.

According to this configuration, the dust accumulated on the floor in the passenger compartment is raised to the space in the passenger compartment by performing the raising control. Moreover, the air containing dust is suck | inhaled by the air-conditioning duct by performing inside air circulation control after that. When the air containing dust passes through the air conditioning duct, the dust contained in the air is collected by a filter in the air conditioning duct. As a result, the dust accumulated on the floor in the passenger compartment can be collected by the filter, so that the dust in the passenger compartment can be reduced.

FIG. 1 is a block diagram illustrating a schematic configuration of the vehicle air conditioner according to the first embodiment. FIG. 2 is a flowchart showing a processing procedure of cleaning control executed by the ECU of the first embodiment. FIG. 3 is a diagram schematically illustrating a state of the passenger compartment when performing the raising control according to the first embodiment. FIG. 4 is a flowchart showing a processing procedure of the cleaning control executed by the ECU of the second embodiment. FIG. 5 is a flowchart illustrating a processing procedure of the second flying-up control executed by the ECU according to the second embodiment. FIG. 6 is a diagram schematically illustrating the inside of the vehicle compartment when the second soaring control according to the second embodiment is executed. FIG. 7 is a block diagram illustrating a schematic configuration of the vehicle air conditioner according to the third embodiment.

<First Embodiment>
Hereinafter, a first embodiment of a vehicle air conditioner will be described with reference to the drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

As shown in FIG. 1, the vehicle air conditioner 1 of this embodiment includes an air conditioning duct 10 and an air conditioning unit 20. The vehicle air conditioner 1 is provided inside an instrument panel of the vehicle.
Inside the air conditioning duct 10 is formed an air passage 11 that guides air for air conditioning for air conditioning the vehicle interior to the vehicle interior. In the air passage 11, air flows in the direction indicated by the arrow A in the drawing. An outside air suction port 12 and an inside air suction port 13 are formed in a portion of the air conditioning duct 10 on the upstream side in the air flow direction A as a portion for taking air into the air passage 11 from the outside of the air conditioning duct 10. The outside air inlet 12 is a portion that takes outside air, which is air outside the passenger compartment, into the air passage 11. The inside air suction port 13 is a portion that takes in the inside air, which is air in the passenger compartment, into the air passage 11.

A filter 17 is disposed on the downstream side of the outside air inlet 12 and the inside air inlet 13 in the air conditioning duct 10. The filter 17 removes dust such as dust contained in the outside air taken in from the outside air inlet 12 or inside air taken in from the inside air inlet 13.
A defroster air outlet 14, a face air outlet 15, and a foot air outlet 16 are formed on the downstream side of the air flow direction A of the air conditioning duct 10. The defroster outlet 14 blows air flowing through the air conditioning duct 10 toward the inner surface of the windshield of the vehicle. The face outlet 15 blows out air flowing in the air conditioning duct 10 toward the face of the driver or passenger in the passenger seat. The foot outlet 16 blows out the air flowing through the air conditioning duct 10 toward the feet of the driver or the passenger on the passenger seat.

The air conditioning unit 20 generates air for air conditioning from air introduced into the air passage 11 through at least one of the outside air inlet 12 and the inside air inlet 13. The air conditioning unit 20 includes a blower 21, an evaporator 22, and a heater core 23.
The blower 21 is disposed on the downstream side in the air flow direction A of the outside air inlet 12 and the inside air inlet 13. The blower 21 generates an air flow in the air passage 11 by rotating based on the supply of electric power. By adjusting the power supplied to the blower 21, the air volume of the air flowing through the air passage 11, in other words, the air volume of the air conditioning air is adjusted.

The evaporator 22 is disposed on the downstream side in the air flow direction A of the blower 21. The evaporator 22 is a component of a refrigeration cycle (not shown). The refrigeration cycle includes an evaporator 22, a compressor, a condenser, and an expansion valve. In the refrigeration cycle, the refrigerant circulates in the order of the compressor, the condenser, the expansion valve, and the evaporator 22. In the evaporator 22, heat exchange is performed between the refrigerant flowing inside and the air in the air passage 11, whereby the refrigerant evaporates and vaporizes. The evaporator 22 has a function of cooling the air flowing through the air passage 11 using the heat of vaporization when the refrigerant is vaporized, and a function of dehumidifying the air flowing through the air passage 11.

The heater core 23 is disposed downstream of the evaporator 22 in the air flow direction A. The heater core 23 is connected to an engine (not shown) through a pipe. Engine cooling water circulates between the engine and the heater core 23 via this pipe. The heater core 23 heats the air flowing in the air passage 11 using the engine coolant flowing inside as a heat source.

The air conditioning unit 20 further includes an inside / outside air switching door 24, an air mix door 25, and air

outlet switching doors

26, 27, and 28.
The inside / outside air switching door 24 opens and closes the outside air inlet 12 and the inside air inlet 13. When the inside / outside air switching door 24 is located at the inside air introduction position indicated by a solid line in the drawing, the outside air inlet 12 is closed and the inside air inlet 13 is opened. In this case, the vehicle air conditioner 1 is in an inside air circulation mode in which inside air is taken into the air passage 11 from the inside air suction port 13. On the other hand, when the inside / outside air switching door 24 is located at the outside air introduction position indicated by a broken line in the drawing, the inside air inlet 13 is closed and the outside air inlet 12 is opened. In this case, the vehicle air conditioner 1 is in an outside air introduction mode in which outside air is taken into the air passage 11 from the outside air inlet 12.

The air mix door 25 adjusts the ratio between the air volume flowing into the heater core 23 and the air volume bypassing the heater core 23. Specifically, the position of the air mix door 25 can be adjusted between a maximum heating position indicated by a solid line in the drawing and a maximum cooling position indicated by a broken line in the drawing. When the position of the air mix door 25 is the maximum heating position, since most of the air that has passed through the evaporator 22 passes through the heater core 23, the temperature of the air-conditioning air rises most. When the position of the air mix door 25 is the maximum cooling position, most of the air that has passed through the evaporator 22 bypasses the heater core 23. In this case, since the air cooled by the evaporator 22 flows directly to the outlets 14 to 16, the temperature of the air-conditioning air is the lowest. In the vehicle air conditioner 1, the temperature of the air conditioning air is adjusted by adjusting the opening of the air mix door 25 between the maximum heating position and the maximum cooling position.

The blower outlet switching doors 26 to 28 switch the open / closed states of the defroster blower outlet 14, the face blower outlet 15, and the foot blower outlet 16, respectively. When at least one of the outlet switching doors 26 to 28 is opened, air for air conditioning is blown out from the opened outlet to the vehicle interior.

Next, the electrical configuration of the vehicle air conditioner 1 will be described.
The vehicle air conditioner 1 includes an operation unit 60, a display unit 61, a dust sensor 70, a seating sensor 71, and an ECU (Electronic Control Unit) 80. In the present embodiment, the ECU 80 corresponds to the control unit.

The operation unit 60 is a part operated by the driver when adjusting the air volume and temperature of the air-conditioning air. The operation part 60 is arrange | positioned at the instrument panel of a vehicle, for example. In the operation unit 60, for example, one of the outside air introduction mode and the inside air circulation mode can be selected. In the operation unit 60, the air volume of the air for air conditioning, the temperature of the air for air conditioning, the outlet for the air for air conditioning, and the like can be set. The operation unit 60 outputs these pieces of operation information to the ECU 80.

The display unit 61 is a part that displays various information of the vehicle air conditioner 1. In the present embodiment, the display unit of the car navigation device of the vehicle is substituted as the display unit 61 of the vehicle air conditioner 1. In addition, the display part 61 may use the thing only for the vehicle air conditioner 1. FIG.
The dust sensor 70 is provided in the bypass 18 formed in the installation part of the filter 17 in the air conditioning duct 10. The bypass circuit 18 is a part that flows the outside air taken in from the outside air inlet 12 or the inside air taken in from the inside air inlet 13 while bypassing the filter 17. The dust sensor 70 detects the concentration of dust contained in the air flowing through the bypass 18.

Specifically, the dust sensor 70 has, for example, a light emitting element that emits light toward the bypass 18 and a light receiving element that receives light. The light emitted from the light emitting element is reflected by dust contained in the air flowing through the bypass 18. This reflected light is received by the light receiving element. That is, the amount of light received by the light receiving element changes according to the dust concentration of the air passing through the bypass 18. The light receiving element outputs a voltage signal corresponding to the received reflected light. The dust sensor 70 outputs a voltage signal corresponding to the output voltage of the light receiving element. Therefore, the output signal of the dust sensor 70 changes according to the dust concentration of the air flowing through the air conditioning duct 10.

The seating sensor 71 detects whether or not an occupant is seated in each of the plurality of seats of the vehicle, and outputs a signal corresponding to the detection result. In the present embodiment, the seating sensor 71 corresponds to an occupant sensor that detects an occupant in the passenger compartment.
The ECU 80 receives detection signals from various sensors and switches for detecting the state of the vehicle. For example, as shown in FIG. 1, the output signal of the door opening / closing sensor 72 is taken into the ECU 80. The door open / close sensor 72 detects the open / closed state of each door of the vehicle and outputs a signal corresponding to the detected open / closed state of the vehicle door.

ECU80 is comprised centering on the microcomputer which has CPU, memory, etc. ECU80 acquires the operation information from the operation part 60, and performs the normal air conditioning control which drives the air conditioning unit 20 based on the acquired operation information. By executing this normal air conditioning control, air conditioning air corresponding to the operation information of the operation unit 60 is generated by the air conditioning unit 20.

Further, the output signals of the dust sensor 70, the seating sensor 71, and the door opening / closing sensor 72 are taken into the ECU 80. The ECU 80 acquires the dust concentration information based on the output signal of the dust sensor 70 and displays the acquired dust concentration on the display unit 61. The ECU 80 acquires information on the presence / absence of an occupant in each seat based on the output signal of the seating sensor 71. The ECU 80 detects the open / closed state of each door of the vehicle based on the output signal of the door open / close sensor 72.

Further, the ECU 80 performs cleaning control for cleaning the air in the passenger compartment by collecting the dust accumulated on the floor in the passenger compartment and collecting it with the filter 17.
Next, a specific procedure of the cleaning control executed by the ECU 80 will be described with reference to FIG. The ECU 80 repeatedly executes the process shown in FIG. 2 at a predetermined cycle.

As shown in FIG. 2, the ECU 80 first sets the air conditioning unit 20 to the inside air circulation mode as a process of step S10. Specifically, the ECU 80 positions the inside / outside air switching door 24 at the inside air introduction position.
Next, the ECU 80 determines whether an occupant is present in the vehicle interior as the process of step S11. Specifically, the ECU 80 determines that no occupant is present in the passenger compartment when the following logical product conditions (a1) and (a2) are satisfied.

(A1) No passenger is detected in the passenger compartment by the seating sensor 71.
(A2) After the condition of (a1) is satisfied, the door opening / closing sensor 72 detects the closing operation of the vehicle door following the opening operation of the vehicle door.

If the ECU 80 makes a negative determination in step S11, that is, if it is determined that no occupant is present in the passenger compartment, the ECU 80 sets the air conditioning unit 20 so that dust accumulated on the floor in the passenger compartment rises as the processing in step S12. Executes the control to be controlled. Specifically, the ECU 80 controls the blower 21 so that the air volume becomes the maximum air volume. The ECU 80 controls the outlet switching doors 26 to 28 so that the defroster outlet 14 and the face outlet 15 are closed and the foot outlet 16 is opened. In other words, the ECU 80 controls the air outlet switching doors 26 to 28 so that the air flowing through the air conditioning duct 10 is blown out only from the foot air outlet 16. Thereby, since air is blown with the maximum air volume from the foot blower outlet 16, as shown in FIG. 3, the dust accumulated on the floor in the passenger compartment is lifted into the passenger compartment.

As shown in FIG. 2, after executing the process of step S12, the ECU 80 determines whether or not the flying-up control is completed as a process of step S13. Specifically, the ECU 80 determines that the raising control is completed when a predetermined time elapses from the time when the execution of the raising control is started. The predetermined time is a preset time.

If the ECU 80 makes an affirmative determination in the process of step S13, that is, if the raising control is completed, as the process of step S14, the internal air that controls the air conditioning unit 20 so that air circulates through the air conditioning duct 10 and the vehicle interior. Execute circulation control. Specifically, the ECU 80 maintains the state in which the air volume of the blower 21 is set to the maximum air volume so that the defroster outlet 14 and the foot outlet 16 are closed and the face outlet 15 is opened. The blower outlet switching doors 26 to 28 are controlled. In other words, the ECU 80 controls the air outlet switching doors 26 to 28 so that the air flowing through the air conditioning duct 10 is blown out only from the face air outlet 15. As a result, air is blown from the face air outlet 15 at the maximum air volume, so that the dust that has risen into the passenger compartment is sucked into the air conditioning duct 10 from the inside air inlet 13 together with the air. When the air sucked into the air conditioning duct 10 passes through the filter 17, dust contained in the air is collected by the filter 17, so that the air is cleaned. The cleaned air is blown out into the vehicle interior via the face outlet 15, whereby the air in the vehicle interior is gradually cleaned.

The ECU 80 also executes the inside air circulation control in step S14 even when an affirmative determination is made in the process in step S11. That is, when there is an occupant in the vehicle compartment, the ECU 80 executes the inside air circulation control without executing the soaring control.
After executing the process of step S14, the ECU 80 determines whether or not the inside air circulation control is completed as a process of step S15. Specifically, the ECU 80 determines that the inside air circulation control has been completed when a predetermined time has elapsed since the start of execution of the inside air circulation control. The predetermined time is a preset time.

ECU80 displays the dust density detected by the dust sensor 70 on the display part 61 as a process of step S16, when an affirmative determination is made in the process of step S15, that is, when the inside air circulation control is completed. Thereafter, the ECU 80 performs normal air conditioning control as the process of step S17.

According to the vehicle air conditioner 1 of the present embodiment described above, the operations and effects shown in the following (1) to (5) can be obtained.
(1) Dust accumulated on the floor in the passenger compartment is soared into the space in the passenger compartment by performing the raising control. Moreover, the air containing dust is suck | inhaled by the air-conditioning duct by performing inside air circulation control after that. When the air containing dust passes through the air conditioning duct 10, the dust contained in the air is collected by the filter 17 in the air conditioning duct 10. As a result, the dust accumulated on the floor in the passenger compartment can be collected by the filter 17, so that the dust in the passenger compartment can be reduced.

(2) The ECU 80 controls the air outlet switching doors 26 to 28 so that the air flowing through the air conditioning duct 10 is blown out only from the foot air outlet 16 as the lift-up control. As a result, the dust accumulated on the floor in the passenger compartment can be more accurately raised to the space in the passenger compartment, so that the dust accumulated on the floor in the passenger compartment can be further collected by the filter 17. Therefore, the dust in the passenger compartment can be reduced more accurately.

(3) The ECU 80 controls the blower 21 so that the air volume of the air becomes the maximum air volume as the sowing control. As a result, the dust accumulated on the floor in the passenger compartment can be more accurately raised to the space in the passenger compartment, so that the dust accumulated on the floor in the passenger compartment can be further collected by the filter 17. Therefore, the dust in the passenger compartment can be reduced more accurately.

(4) The ECU 80 executes the raising control on the condition that the seating sensor 71 determines that no occupant is present in the vehicle compartment. This makes it difficult for dust to be applied to the occupant, making it difficult for the occupant to feel discomfort.
(5) The vehicle air conditioner 1 includes a seating sensor 71 that detects whether or not an occupant is seated in each of a plurality of seats of the vehicle as an occupant sensor for detecting an occupant in the vehicle interior. Thereby, the presence or absence of the passenger | crew in a vehicle interior can be detected easily.

(Modification)
Next, the modification of the vehicle air conditioner 1 of 1st Embodiment is demonstrated.
As indicated by a broken line in FIG. 1, the output signal of the start switch 73 is taken into the ECU 80 of this modification. The start switch 73 is a switch operated by the driver when starting the vehicle. As the start switch 73, an ignition switch operated when starting the engine of the vehicle, a push button type switch operated when starting a hybrid vehicle, an electric vehicle, or the like can be used. The start switch 73 outputs a signal corresponding to the operation when the driver performs an on operation and an off operation.

The ECU 80 detects an on operation and an off operation on the start switch 73 based on the output signal of the start switch 73.
The ECU 80 determines that no occupant is present in the vehicle interior when the following logical product conditions (a1) to (a3) are satisfied in the process of step S11 shown in FIG.

(A1) No passenger is detected in the passenger compartment by the seating sensor 71.
(A2) The start switch 73 is turned off.
(A3) After the conditions (a1) and (a2) are satisfied, the door opening / closing sensor 72 detects the closing operation of the vehicle door following the opening operation of the vehicle door.

According to such a configuration, after the occupant stops the vehicle and gets off the vehicle, the raising control in step S12 and the inside air circulation control in step S14 are executed. As a result, dust is less likely to be applied to the passenger.
In the case where the flying-up control and the internal air circulation control are executed after the start switch 73 is turned off as in the vehicle air conditioner 1 of the present modification, the vehicle is stopped when the internal air circulation control is completed. In addition, there are no passengers in the passenger compartment. In such a situation, the ECU 80 does not need to execute the normal air conditioning control as the process of step S17, and therefore the process may be omitted.

Second Embodiment
Next, the vehicle air conditioner 1 of 2nd Embodiment is demonstrated. Hereinafter, it demonstrates centering on difference with the vehicle air conditioner 1 of 1st Embodiment.
ECU80 of this embodiment performs the process shown by FIG. 4 as cleaning control. That is, if the ECU 80 makes a negative determination in step S11, that is, if it is determined that no occupant is present in the vehicle interior, the ECU 80 executes the first soaring control as the process in step S20. The control content of the first soaring control is the same as the control content of step S12 of the first embodiment shown in FIG.

If the ECU 80 makes an affirmative determination in the process of step S11, that is, if it is determined that an occupant is present in the passenger compartment, the ECU 80 executes the second soaring control as the process of step S21. Specifically, the ECU 80 executes the process shown in FIG. 5 as the second flying-up control.
That is, the ECU 80 first blows out air from the face outlet 15 as a process of step S210. Specifically, the ECU 80 controls the blower 21 so that the air volume becomes the maximum air volume. Further, the ECU 80 controls the air outlet switching doors 26 to 28 so that the defroster air outlet 14 and the foot air outlet 16 are closed and the face air outlet 15 is opened. In other words, the ECU 80 controls the air outlet switching doors 26 to 28 so that the air flowing through the air conditioning duct 10 is blown out only from the face air outlet 15. Thereby, as FIG. 6 shows, the cleaned air blows off toward the passenger | crew's face vicinity from the face blower outlet 15. As shown in FIG.

Thereafter, as shown in FIG. 5, the ECU 80 blows air from the foot outlet 16 as the process of step S <b> 211. Specifically, the ECU 80 opens the foot outlet 16 while maintaining the state where the air volume of the blower 21 is set to the maximum air volume. Thereby, since air is blown from the foot outlet 16, as shown in FIG. 6, the dust accumulated on the floor in the passenger compartment rises into the passenger compartment.

As shown in FIG. 5, after executing the process of step S <b> 211, the ECU 80 determines whether the flying control is completed as the process of step S <b> 212. Specifically, the ECU 80 determines that the raising control is completed when a predetermined time elapses from the time when the execution of the raising control is started. The predetermined time is a preset time.

If the ECU 80 makes an affirmative determination in step S212, that is, if the raising control is completed, the ECU 80 closes the foot outlet 16 as a process in step S213, and then performs a face operation as a process in step S214. The outlet 15 is closed. Thereafter, as shown in FIG. 4, the ECU 80 executes the processes after step S14.

According to the vehicle air conditioner 1 of the present embodiment described above, the operation and effects shown in the following (6) can be further obtained.
(6) When an occupant is present in the vehicle compartment, the ECU 80 performs the sowing control while blowing air from the face outlet 15. This makes it difficult for the dust that has risen into the vehicle interior space by the soaring control to hit the occupant's face. That is, since the dust concentration near the passenger's face can be reduced, the passenger's discomfort can be reduced.

<Third Embodiment>
Next, the vehicle air conditioner 1 of 3rd Embodiment is demonstrated. Hereinafter, it demonstrates centering on difference with the vehicle air conditioner 1 of 1st Embodiment.
As shown in FIG. 7, the air-conditioning duct 10 of this modification is branched into a duct portion 10 a for the driver's seat and a duct portion 10 b for the passenger seat in the downstream portion of the evaporator 22.

The duct portion 10a for the driver's seat guides air for air conditioning to the driver's seat through the defroster outlet 14a, the face outlet 15a, and the foot outlet 16a provided in the downstream portion thereof. The duct portion 10b for the passenger seat guides air for air conditioning to the passenger seat through the defroster outlet 14b, the face outlet 15b, and the foot outlet 16b provided in the downstream portion thereof.

The air conditioning unit 20 includes air outlet switching doors 26a to 28a for switching the open / close states of the air outlets 14a to 16a, and air outlet switching doors 26b to 28b for switching the open / close states of the air outlets 14b to 16b. have. The air conditioning unit 20 includes an air mix door 25a corresponding to the duct portion 10a for the driver's seat and an air mix door 25b corresponding to the duct portion 10b for the passenger seat.

The ECU 80 of the present embodiment individually executes the cleaning control shown in FIG. 2 for each of the driver seat and the passenger seat.
That is, when executing the cleaning control for the driver's seat, the ECU 80 determines whether there is a passenger in the driver's seat as the process of step S11. Further, when the ECU 80 performs the raising control as the process of step S12, the outlet switching door is set so that the defroster outlet 14a and the face outlet 15a are closed and the foot outlet 16a is opened. 26a to 28a are controlled. Further, when the ECU 80 executes the inside air circulation control as the processing of step S14, the outlet switching door so that the defroster outlet 14a and the foot outlet 16a are closed and the face outlet 15a is opened. 26a to 28a are controlled.

On the other hand, when executing the cleaning control for the passenger seat, the ECU 80 determines whether or not there is a passenger in the passenger seat as a process of step S11. Further, when the ECU 80 performs the raising control as the process of step S12, the outlet switching door is set so that the defroster outlet 14b and the face outlet 15b are closed and the foot outlet 16b is opened. 26b to 28b are controlled. Further, when the ECU 80 executes the inside air circulation control as the process of step S14, the outlet switching door so that the defroster outlet 14b and the foot outlet 16b are closed and the face outlet 15b is opened. 26b to 28b are controlled.

According to the vehicle air conditioner 1 of the present embodiment described above, the operation and effect shown in the following (7) can be further obtained.
(7) The ECU 80 performs the raising control for only the air outlet corresponding to the seat where the occupant is present among the air outlets 14a to 16a and 14b to 16b. As a result, it is difficult for the occupant to take up dust that rises into the space in the vehicle interior due to the soaring control, so that discomfort for the occupant can be reduced.

<Other embodiments>
In addition, each embodiment can also be implemented with the following forms.
The processing content of the cleaning control executed by the ECU 80 of the second embodiment may be executed by the ECU 80 of the third embodiment. That is, the ECU 80 according to the third embodiment may execute the first soaring control or the second soaring control on the driver seat or the passenger seat.

-The vehicle air conditioner 1 of 3rd Embodiment may have the structure which can ventilate the air for an air conditioning separately to a rear seat separately from a driver's seat and a passenger seat. In this case, the ECU 80 may separately execute the cleaning control for the rear seat separately from the driver seat and the passenger seat.
-ECU80 of each embodiment may start cleaning control based on predetermined operation with respect to the operation part 60. FIG.

The ECU 80 determines that the inside air circulation control has been completed when the dust concentration detected by the dust sensor 70 is equal to or lower than a preset threshold concentration in the processing of step S15 shown in FIGS. 2 and 4 respectively. May be.
The occupant sensor for detecting the occupant in the passenger compartment is not limited to the seating sensor 71, and the surface temperature of the occupant existing in the passenger compartment is detected in a non-contact manner as shown by the broken lines in FIGS. An infrared sensor 74 or the like can also be used.

-ECU80 of each embodiment may set the air volume of the air blower 21 to an air volume smaller than the maximum air volume at the time of execution of raising control and internal air circulation control.
-ECU80 of each embodiment may blow off air from both the defroster blower outlet 14 and the face blower outlet 15, or only from the defroster blower outlet 14 in execution of inside air circulation control.

The means and / or function provided by the ECU 80 can be provided by software stored in a substantial memory and a computer that executes the software, only software, only hardware, or a combination thereof. For example, when the ECU 80 is provided by an electronic circuit which is hardware, it can be provided by a digital circuit including a large number of logic circuits or an analog circuit.

・ This disclosure is not limited to the above specific examples. Any of the above specific examples that are appropriately modified by those skilled in the art are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the specific examples described above, and the arrangement, conditions, shape, and the like thereof are not limited to those illustrated, and can be appropriately changed. Each element included in each of the specific examples described above can be appropriately combined as long as no technical contradiction occurs.

Claims

An air conditioning duct that blows air taken in from at least one of an inside air suction port (13) for taking in the inside air that is air inside the vehicle interior and an outside air suction port (12) for taking in outside air that is outside the vehicle compartment into the vehicle interior. (10) and
A filter (17) for collecting dust contained in the air flowing in the air conditioning duct;
An air-conditioning unit that is provided in the air-conditioning duct and generates air-conditioning air capable of air-conditioning the vehicle interior from air introduced into the air-conditioning duct through at least one of the inside air inlet and the outside air inlet. (20) and
A control unit (80) for controlling the air conditioning unit,
The control unit (80) performs the sowing control for controlling the air conditioning unit so that dust accumulated on the floor in the passenger compartment rises, and then the air conditioning unit so that air circulates through the air conditioning duct and the passenger compartment. A vehicle air conditioner that performs internal air circulation control to control the air.
The air conditioning duct has a foot outlet (16) for blowing out air toward the feet of the occupant,
The vehicle air conditioner according to claim 1, wherein the control unit controls the air conditioning unit so that the air flowing through the air conditioning duct is blown out from the foot outlet as the sowing control.
The air conditioning duct has a foot outlet (16) for blowing out air toward the feet of the occupant,
The vehicle air conditioner according to claim 1, wherein the control unit controls the air conditioning unit so that the air flowing through the air conditioning duct is blown out only from the foot outlet as the sowing control.
The air conditioning unit has a blower (21) that adjusts the amount of air blown into the passenger compartment,
The vehicle air conditioner according to any one of claims 1 to 3, wherein the control unit controls the blower so that the air volume of the air becomes a maximum air volume as the sowing control.
The vehicle air conditioner according to any one of claims 1 to 4, wherein the control unit executes the lift-up control on condition that no passenger is present in a vehicle interior.
The air conditioning duct has a face outlet (15) for blowing air toward the face of the occupant as an outlet for blowing air into the passenger compartment.
The vehicle air conditioner according to claim 5, wherein, when an occupant is present in a vehicle interior, the control unit blows air out of the face air outlet when performing the raising control.
The air conditioning duct has a plurality of air outlets (15a, 15b, 16a, 16b) for individually blowing air to a plurality of seats of the vehicle,
The vehicle air conditioner according to any one of claims 1 to 6, wherein the control unit performs the soaring control only on an air outlet corresponding to a seat where an occupant is present among a plurality of air outlets. .
The vehicle sensor according to any one of claims 5 to 7, further comprising a seating sensor (71) for detecting whether or not an occupant is seated in a vehicle seat as a sensor for detecting an occupant in the vehicle interior. Air conditioner.
The vehicle according to any one of claims 5 to 7, further comprising an infrared sensor (74) for detecting a surface temperature of an occupant existing in the passenger compartment in a non-contact manner as a sensor for detecting an occupant in the passenger compartment. Air conditioner.
The vehicle air conditioner according to claim 5, wherein the control unit determines that no occupant is present in the passenger compartment on the condition that the start switch (73) of the vehicle is turned off.