JP7484665B2 - Vehicle air conditioning control device - Google Patents

Description

The disclosure herein relates to an air conditioning control device for a vehicle.

Patent document 1 describes an air purifier equipped with a dust sensor and a control unit.

JP 2003-65940 A

When the air purifier is turned on, the dust sensor detects dust in the air. Based on the detection results, the control unit removes dust from the indoor air.

When an air purifier is installed in a vehicle, the dust sensor in the air purifier detects dust in the air blown by the blower.

The concentration of dust contained in the air blown by the blower takes time to stabilize after the blower starts to agitate the air inside the vehicle. As a result, it takes time from when the blower starts to agitate the air inside the vehicle until the dust sensor detects a stable detection result for the dust concentration.

As a result, it may take some time for the control unit to remove dust (floating particles) based on stable detection results of dust concentration.

The objective of this disclosure is to provide a vehicle air conditioning control device that reduces the time it takes for the control unit to remove suspended solids based on stable measurement results of the suspended solids concentration.

According to one aspect of the present disclosure, there is provided an air conditioning control device for a vehicle,
an activation unit (502) that activates a blower (310) that draws air from at least one of a vehicle interior (301) and the exterior of the vehicle into an air-conditioning chamber (302) and exhausts air from the air-conditioning chamber to the vehicle interior;
an input unit (503) for inputting a measurement result measured by a suspended matter sensor (400) for measuring the concentration of suspended matter contained in the air drawn into the air-conditioned room;
and a removal control unit (504a) for controlling a removal device (210, 360) for removing floating matter based on a measurement result input to an input unit from the floating matter sensor after the blower is started,
The starting unit starts the blower before the vehicle is started based on external information before the occupant gets in the vehicle, and the measurement result before the vehicle is started is input to the input unit,
When the vehicle is started after the passenger gets in , the removal control unit controls the removal device based on the measurement results before the vehicle is started .

This makes it easier for the concentration of airborne particles in the air to stabilize before the passenger gets in the vehicle. For this reason, it is easier for a stable measurement result of the concentration of airborne particles to be input from the airborne particle sensor (400) to the input unit (503) before the passenger gets in the vehicle.

As a result, the time required for the removal control unit (504a) to remove the suspended matter based on the stable measurement results of the concentration of suspended matter is likely to be shortened.
Immediately after the vehicle starts, the removal control unit (504a) is likely to remove the suspended matter based on the stable measurement results of the concentration of suspended matter.

The reference numbers in parentheses above merely indicate the corresponding relationship to the configurations described in the embodiments below, and do not limit the technical scope in any way.

1 is a diagram showing a configuration of a vehicle air conditioning control device; FIG. 2 is a block diagram illustrating control of the vehicle air conditioning control device. FIG. 4 is a block diagram illustrating a control unit. 4 is a flowchart illustrating a floating matter control process of the vehicle air conditioning control device. 4 is a flowchart illustrating an initial measurement process of the vehicle air conditioning control device.

Below, several embodiments for implementing the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to matters described in the preceding embodiment may be given the same reference numerals, and duplicated explanations may be omitted. In cases where only a portion of the configuration is described in each embodiment, the other embodiment described previously may be applied to the other parts of the configuration.

In addition to combinations of parts that are explicitly stated as possible in each embodiment, it is also possible to partially combine embodiments together, embodiments and variations, and variations together, even if not explicitly stated, as long as there are no particular problems with the combination.

First Embodiment
The vehicle air conditioner 1000 is mounted on a vehicle. The vehicle air conditioner 1000 is a device that adjusts the temperature of intake air and blows it into the vehicle interior 301. The vehicle air conditioner 1000 is a device that performs air conditioning operations such as heating operation, cooling operation, and dehumidification operation in the vehicle interior 301.

The vehicle is, for example, an automobile equipped with a gasoline engine. However, other vehicles such as electric automobiles equipped with a traction motor and hybrid automobiles equipped with both an engine and a motor can also be used.

As shown in Figures 1 and 2, the vehicle air conditioner 1000 has an HVAC 300, a compressor 350, a floating object sensor 400, and a vehicle air conditioner control device 500. HVAC is an abbreviation for Heating, Ventilation, and Air Conditioning.

In addition to the vehicle air conditioner 1000, the vehicle is also equipped with multiple external sensors 600, an ECU 700, a window 810, and a display 820. ECU stands for Electronic Control Unit.

<Components of HVAC>
1, the HVAC 300 includes a plurality of switching doors 200, a blower 310, a filter 320, an evaporator 330, a heater core 340, an ion generating device 360, and an air conditioning room 302 that houses these components. The evaporator 330 corresponds to a cooler.

The compressor 350 and the floating object sensor 400 are provided outside the air-conditioned room 302. The compressor 350 and the floating object sensor 400 may be housed inside the air-conditioned room 302.

The air conditioning room 302 is also provided with an inside air intake 110, an outside air intake 120, a defroster outlet 130, a face outlet 140, and a foot outlet 150.

The inside air intake 110 is an intake port that draws in air from the passenger compartment 301. The outside air intake 120 is an intake port that draws in air from outside the vehicle. The defroster outlet 130 is an outlet that blows air onto the front window of the vehicle. The face outlet 140 is an outlet that blows air onto the upper part of the front seat. The foot outlet 150 is an outlet that blows air onto the lower part of the front seat.

The multiple switching doors 200 include an inside/outside air switching door 210, an air mix door 220, a defroster door 230, a face door 240, and a foot door 250. Details of these multiple switching doors 200 will be described later.

The blower 310 is a device that draws air from at least one of the vehicle interior 301 or the outside of the vehicle into the air-conditioning room 302, and expels air from the air-conditioning room 302 to the vehicle interior 301.

The filter 320 has the function of removing suspended matter contained in the air drawn into the air-conditioned room 302 from at least one of the vehicle interior 301 and the outside of the vehicle. Suspended matter corresponds to particulate matter contained in the air.

The evaporator 330 is a heat exchanger through which a refrigerant flows and which cools the air by removing the heat of vaporization from the surrounding air when the refrigerant evaporates from a liquid to a gas. The refrigerant flows from the evaporator 330 to the compressor 350 via a first flow path (not shown).

The compressor 350 has the function of compressing the gaseous refrigerant sent from the evaporator 330 to a high temperature and high pressure. The refrigerant flows from the compressor 350 to the evaporator 330 via a second flow path (not shown).

The second flow path is provided with a condenser (not shown) and an expansion valve (not shown). The gaseous refrigerant that has been made high-temperature and high-pressure by the compressor 350 is sent from the compressor 350 to the condenser. It is then converted into a low-temperature, high-pressure liquid refrigerant by the condenser.

The liquid refrigerant that has become low-temperature and high-pressure in the condenser is sent to the expansion valve. The low-temperature, high-pressure liquid refrigerant is then forcibly sprayed from the expansion valve, changing it into a low-temperature, low-pressure mist of refrigerant. The mist of refrigerant sprayed from the expansion valve is sent to the evaporator 330. In this way, the refrigerant repeatedly vaporizes and liquefies. The compressor 350 makes it easier for liquefaction to occur efficiently.

The heater core 340 is a heat exchanger that heats the surrounding air using the heat of the engine coolant and the heat of the refrigerant that has been compressed by the compressor 350 to a high temperature.

The ion generating device 360 has the function of generating ions and removing floating objects by having the ions adsorb onto the floating objects. The floating objects contained in the air inside the vehicle interior 301 are removed by the ion generating device 360.

The inside/outside air switching door 210 is a door device that adjusts the amount of air drawn into the air-conditioned room 302 from the inside air intake 110 and the outside air intake 120.

The inside/outside air switching door 210 opens the inside air intake 110 and closes the outside air intake 120 to realize an inside air mode in which air is circulated inside the vehicle compartment 301. The inside/outside air switching door 210 closes the inside air intake 110 and opens the outside air intake 120 to realize an outside air mode in which air is taken in from outside the vehicle.

The air mix door 220 is located downstream of the evaporator 330 and upstream of the heater core 340 in the air flow inside the air-conditioned room 302. By controlling the opening degree of the air mix door 220, the amount of air that passes through the heater core 340 and is heated can be adjusted.

The defroster door 230 is a door device that adjusts whether or not air is blown out from the defroster outlet 130 and the amount of air blown out.

The face door 240 is a door device that adjusts whether or not air is blown out from the face outlet 140 and the amount of air blown out.

The foot door 250 is a door device that adjusts whether or not air is blown out from the foot air outlet 150 and the amount of air blown out.

The inside/outside air switching door 210 can be rotated in a range from when the inside air intake 110 is closed to when the outside air intake 120 is closed. The air mix door 220 can be rotated in a range from when the amount of air passing through the heater core 340 is at a minimum to when the amount of air not passing through the heater core 340 is at a minimum.

The defroster door 230 is rotatable within a range from when the defroster outlet 130 is closed to when the defroster outlet 130 is fully open. The face door 240 is rotatable within a range from when the face outlet 140 is closed to when the face outlet 140 is fully open. The foot door 250 is rotatable within a range from when the foot outlet 150 is closed to when the foot outlet 150 is fully open.
<Floating object sensor>

The floating matter sensor 400 is a measuring device that measures the concentration of floating matter contained in the air drawn into the air-conditioned room 302 from at least one of the vehicle interior 301 or the outside of the vehicle.

Floating matter contained in the vehicle cabin 301 circulates between the vehicle cabin 301 and the air-conditioning room 302 by the air exhausted by the blower 310. As a result, the concentration of floating matter contained in the air sucked from the vehicle cabin 301 to the air-conditioning room 302 tends to be equal to the concentration of floating matter contained in the air exhausted from the air-conditioning room 302 to the vehicle cabin 301.

The suspended matter sensor 400 is installed in the air-conditioned room 302 to measure the concentration of suspended matter contained in the air before it is removed by the filter 320.

The suspended matter sensor 400 may be provided in the air-conditioned room 302 to measure the concentration of suspended matter that is contained in the air after passing through the filter 320 and that has not been completely removed by the filter 320 .
<External sensors, ECU, windows, displays>

As described above, in addition to the HVAC 300, the floating object sensor 400, and the vehicle air conditioning control device 500, the vehicle is also equipped with multiple external sensors 600, an ECU 700, a window 810, and a display 820.

The multiple external sensors 600 include a window sensor 610, a door sensor 620, a remote air conditioning sensor 630, and a user detection sensor 640.

The window sensor 610 is a sensor that detects whether the window 810 is open or closed. The door sensor 620 is a sensor that detects whether the door is open or closed. The remote air conditioning sensor 630 is a sensor that detects operation of the vehicle air conditioner 1000 from outside the vehicle compartment. The user detection sensor 640 is a sensor that detects a signal emitted from, for example, a smart key outside the vehicle compartment.

Output signals output from the door sensor 620, the remote air conditioning sensor 630, and the user detection sensor 640 among the multiple external sensors 600 are received by the ECU 700. The ECU 700 sends a start signal to the vehicle air conditioning control device 500 to start the vehicle air conditioning control device 500 based on the output signals output from the door sensor 620, the remote air conditioning sensor 630, and the user detection sensor 640.

The output signals output from the door sensor 620, the remote air conditioning sensor 630, and the user detection sensor 640 correspond to external information. Note that the above-mentioned output signals are not limited to those output from the door sensor 620, the remote air conditioning sensor 630, and the user detection sensor 640.
<Vehicle air conditioning control device>

As shown in FIG. 2, the vehicle air conditioning control device 500 has a determination unit 501, a start-up unit 502, an input unit 503, a control unit 504, a memory unit 505, and a display unit 506. The roles of each unit are explained below.

The determination unit 501 has the function of determining whether or not a person intends to get in the vehicle based on the activation signal sent from the ECU 700 to the vehicle air conditioning control device 500.

Specifically, when a sensor detects a person approaching the vehicle or when a remote air conditioning operation is detected, the ECU 700 transmits an activation signal to the vehicle air conditioning control device 500. Based on the activation signal, the determination unit 501 determines that the person's approach to the vehicle or the operation of the remote air conditioning indicates an intention to board the vehicle.

The starting unit 502 has the function of starting the blower 310 included in the HVAC 300.

The measurement results measured by the floating object sensor 400 are input to the input unit 503. The input unit 503 has the function of storing the measurement results.

The control unit 504 has the function of controlling the various devices included in the HVAC 300, the compressor 350, the window 810, and the display 820.

Specifically, as shown in FIG. 3, the control unit 504 has a removal control unit 504a, a discharge direction control unit 504b, a discharge amount control unit 504c, an airtightness control unit 504d, and a compression control unit 504e.

The removal control unit 504a has the function of controlling the inside/outside air switching door 210 and the ion generating device 360.

The exhaust direction control unit 504b has the function of controlling the exhaust direction of the air exhausted from the air conditioning room 302 to the vehicle interior 301.

The exhaust amount control unit 504c has the function of controlling the amount of air exhausted from the air conditioning room 302 to the vehicle interior 301.

The airtightness control unit 504d has the function of controlling the airtightness of the vehicle interior 301. The compression control unit 504e has the function of controlling the compressor 350.

The inside/outside air switching door 210 and the ion generating device 360 correspond to the removal device. Hereinafter, the inside/outside air switching door 210 and the ion generating device 360 will be referred to as the removal device as appropriate.

The memory unit 505 has a function of storing the concentration of suspended solids contained in the air being drawn from the vehicle interior 301 into the air-conditioned room 302 when the vehicle is stopped. An example of the memory unit 505 is a non-volatile memory.

The display unit 506 has the function of displaying the measurement results held in the input unit 503 or the memory results stored in the memory unit 505 on the display 820.

<Floating object control process>
Next, the floating matter control process will be described with reference to Figures 2 to 5. The floating matter control process is a process in which the vehicle air conditioning control device 500 controls various devices included in the HVAC 300, the compressor 350, and the window 810, thereby reducing the concentration of floating matter in the vehicle interior 301.

When a signal is sent to the ECU 700 from at least one of the door sensor 620, the remote air conditioning sensor 630, and the user detection sensor 640 shown in FIG. 2, the boarding information acquisition process shown in step S5 of FIG. 4 is started.

In step S5, an activation signal is sent from the ECU 700 to the determination unit 501 based on the output signals output from the multiple external sensors 600. When the activation signal is sent to the determination unit 501 in step S5, the floating object control process proceeds to step S10.

In step S10, the determination unit 501 determines whether or not a person intends to board. When an activation signal is sent to the determination unit 501, the determination unit 501 determines that a person intends to board. When the determination unit 501 determines in step S10 that a person intends to board, the floating object control process then proceeds to the initial measurement process in step S15.

When the initial measurement process of step S15 is started, the process of step S20 shown in FIG. 5 is performed. In step S20, the compressor 350 is controlled by the compression control unit 504e. Specifically, the compressor 350 is turned off by the compression control unit 504e. When the compressor 350 is turned off by the compression control unit 504e in step S20, the floating object control process proceeds to step S25.

In step S25, the airtightness control unit 504d controls the inside/outside air switching door 210 and the window 810. In terms of the control of the inside/outside air switching door 210, the inside/outside air switching door 210 closes the outside air intake port 120. In terms of the control of the window 810, the window 810 closes the opening of the window 810.

This maintains the airtightness of the vehicle interior 301. This prevents floating objects from entering the vehicle interior 301 from outside the vehicle interior 301. When the airtightness control unit 504d controls the window 810, the airtightness control unit 504d performs processing based on a signal output from the window sensor 610 to the ECU 700. When the airtightness control unit 504d controls the outside air intake 120 and the opening of the window 810 to be closed in step S25, the floating object control processing then proceeds to step S30.

In step S30, the discharge direction control unit 504b controls the defroster door 230 and the face door 240. Specifically, the discharge direction control unit 504b controls the defroster door 230 so that the defroster outlet 130 is in an open state. The discharge direction control unit 504b controls the face door 240 so that the face outlet 140 is in a closed state.

This prevents air from being discharged from the air-conditioning room 302 to the passenger compartment 301 through the face outlet 140. Air is discharged from the air-conditioning room 302 to the passenger compartment 301 through the defroster outlet 130. When the discharge direction control unit 504b controls the defroster door 230 and the face door 240 in step S30, the floating object control process proceeds to step S35.

In step S35, the amount of air discharged from the defroster outlet 130 is controlled by the emission amount control unit 504c. Specifically, the amount of air discharged from the defroster outlet 130 is reduced by the emission amount control unit 504c. Once the amount of air discharged from the defroster outlet 130 is controlled by the emission amount control unit 504c in step S35, the floating object control process proceeds to step S40.

In step S40, the blower 310 is started by the starting unit 502. When the blower 310 is started by the starting unit 502 in step S40, air is drawn from the passenger compartment 301 into the air-conditioning chamber 302 through the inside air intake 110.

The air drawn into the air-conditioning chamber 302 is then discharged from the air-conditioning chamber 302 to the vehicle interior 301 via the defroster outlet 130. This causes the air in the air-conditioning chamber 302 and the vehicle interior 301 to circulate through the vehicle interior 301 and the air-conditioning chamber 302 via the inside air intake 110 and the defroster outlet 130. The air circulating through the vehicle interior 301 and the air-conditioning chamber 302 causes floating objects to circulate through the vehicle interior 301 and the air-conditioning chamber 302. When the blower 310 is started by the starting unit 502 in step S40, the floating object control process proceeds to step S45.

In step S45, the floating matter sensor 400 starts measuring floating matter almost simultaneously with the start of the blower 310. Once the floating matter measurement starts in step S45, the floating matter control process proceeds to step S50.

In step S50, it is determined whether a predetermined time or more has passed since the blower 310 was started. As a method of determination, for example, the vehicle air conditioning control device 500 has a measurement unit (not shown), and the measurement unit determines whether a predetermined time or more has passed since the blower 310 was started. If it is determined in step S50 that a predetermined time or more has passed since the blower 310 was started, the floating object control process next proceeds to step S55. Note that instead of having a measurement unit, the device may have, for example, a timer (not shown) that determines whether a predetermined time or more has passed since the blower 310 was started.

The specified time is the time it is expected that the concentration of suspended matter will stabilize. The specified time is, for example, 30 seconds. However, the specified time is not limited to 30 seconds. When 30 seconds or more have passed since the blower 310 was started, the concentration of suspended matter contained in the air circulating through the vehicle interior 301 and the air-conditioning room 302 will stabilize. For this reason, the concentration of suspended matter contained in the air drawn from the vehicle interior 301 to the air-conditioning room 302, as measured by the suspended matter sensor 400, is stabilized.

In addition, as described above, by circulating air between the vehicle cabin 301 and the air-conditioning room 302, the concentration of suspended matter contained in the air drawn from the vehicle cabin 301 to the air-conditioning room 302 tends to be equivalent to the concentration of suspended matter contained in the air exhausted from the air-conditioning room 302 to the vehicle cabin 301.

In step S55, the measurement results obtained by the floating object sensor 400 in step S45 are input to and stored in the input unit 503. When the measurement results are stored in the input unit 503 in step S55, the floating object control process proceeds to step S60.

In step S60, a first flag is set for the measurement results stored in the input unit 503 in step S55. When the first flag is set in step S60, the floating object control process returns to step S15 and then proceeds to step S65.

In step S65, it is determined whether the vehicle is in operation. Whether the vehicle is in operation is determined, for example, by whether the ignition switch is turned on or whether the air conditioning is turned on by remote operation. If it is determined in step S65 that the vehicle is in operation, the floating object control process proceeds to step S70.

If it is determined in step S65 that the vehicle is in operation, the display unit 506 displays on the display 820 the measurement results that were input to the input unit 503 in step S55 and held.

In step S70, it is determined whether the blower 310 is turned on. If it is determined in step S70 that the blower 310 is turned on, the floating object control process proceeds to step S75. If it is determined in step S70 that the blower 310 is turned off, the floating object control process returns to step S65 again.

In step S75, it is determined whether the first flag is set. If it is determined in step S75 that the first flag is set, the floating object control process proceeds to step S80.

In step S80, the initial flag set in step S60 is reset. When the initial flag is reset in step S80, the floating object control process proceeds to step S85.

In step S85, the removal control unit 504a controls the inside/outside air switching door 210 and the ion generating device 360. Specifically, the removal control unit 504a controls the opening degree of the inside/outside air switching door 210 according to the measurement results measured by the floating object sensor 400. The more the inside/outside air switching door 210 opens in a direction away from the inside air intake 110, the more easily floating objects in the passenger compartment 301 are drawn into the air conditioning. Therefore, the more the inside/outside air switching door 210 opens in a direction away from the inside air intake 110, the more easily the floating objects are removed by the filter 320.

Specifically, with regard to the control of the ion generating device 360, ions are emitted from the ion generating device 360 by the removal control unit 504a in accordance with the measurement results obtained by the floating matter sensor 400. The ions emitted from the ion generating device 360 are emitted into the vehicle interior, for example, via the defroster outlet 130. The floating matter is removed by the ions emitted from the defroster outlet 130 into the vehicle interior 301. This makes it possible to reduce the concentration of floating matter in the vehicle interior 301.

The ion generating device 360 does not have to be included in the air-conditioned room 302. For example, the ion generating device 360 may be attached to the ceiling of the vehicle interior 301.

Once the inside/outside air switching door 210 and the ion generating device 360 have been controlled in step S85, the floating object control process returns to step S65.

After returning to step S65, the floating object control process passes through step S70 and proceeds again to step S75. If it is determined in step S75 that the initial flag has not been set, the floating object control process proceeds to step S90 without proceeding to step S80.

In step S90, the concentration of the floating matter sucked from the vehicle interior 301 into the air-conditioning room 302 is measured by the floating matter sensor 400. When the concentration of the floating matter sucked from the vehicle interior 301 into the air-conditioning room 302 is measured in step S90, the floating matter control process then proceeds to step S85. Then, in step S85, the removal control unit 504a controls the inside/outside air switching door 210 and the ion generating device 360. Then, the floating matter control process returns to step S65.

Next, a case where it is determined in step S65 that the vehicle is stopped will be described. If it is determined in step S65 that the vehicle is stopped, the floating object control process proceeds to step S95.

In step S95, the concentration of the floating matter being sucked into the air-conditioned room 302 from the vehicle interior 301 when the vehicle is stopped is stored in the memory unit 505. When the concentration of the floating matter being sucked into the air-conditioned room 302 from the vehicle interior 301 when the vehicle is stopped is stored in the memory unit 505 in step S95, the floating matter control process ends.

Next, another example of the initial flag setting process will be described. As an example, a case will be described where it is determined in step S50 that a predetermined time has not elapsed since the blower 310 was started. If it is determined in step S50 that a predetermined time has not elapsed since the blower 310 was started, the floating object control process proceeds from step S50 to step S100.

In step S100, it is determined whether the vehicle has started. Specifically, whether the vehicle has started in step S100 indicates whether the ignition switch is on or not. If it is determined in step S100 that the vehicle has not started, the floating object control process returns to step S45. If it is determined in step S100 that the vehicle has started, the floating object control process proceeds to step S105. Here, the case where the floating object control process has proceeded to step S105 will be described.

In step S105, the memory results stored in memory unit 505 are called up. When the memory results stored in memory unit 505 are called up in step S105, the floating object control process proceeds to step S110.

In step S110, a first-time flag is set for the memory result called up in step S105. When the first-time flag is set in step S110, the floating object control process returns to step S15, and the floating object control process proceeds in accordance with the steps described so far. In step S65, the memory result called up in step S105 is displayed on the display 820.

As another example of the initial flag setting process, a case where it is determined in step S10 that no person is approaching will be described. If it is determined in step S10 that no person is approaching, the floating object control process proceeds from step S10 to step S115. A case where it is determined in step S10 that no person is approaching may be, for example, when an occupant has remained in the vehicle cabin 301 since the last time the vehicle was boarded, and the boarding information acquisition process is not performed.

In step S115, the memory results stored in memory unit 505 are called up. When the memory results stored in memory unit 505 are called up in step S115, the floating object control process proceeds to step S120.

In step S120, a first flag is set for the process performed in step S115. When the first flag is set in step S120, the floating object control process proceeds to step S65, and the floating object control process proceeds in accordance with the steps described so far. In step S65, the display 820 displays the storage result called up in step S115.
<Action and effect>

As described above, after it is determined in step S50 that a predetermined time or more has elapsed since the blower 310 was started, in step S55, the measurement result measured by the floating object sensor 400 in step S45 is input to and held in the input unit 503.

If it is determined in step S65 that the vehicle is operating, the removal device removes suspended particles contained in the air exhausted from the air-conditioning room 302 to the passenger compartment 301 based on the measurement results input and stored in the input unit 503 in step S55.

This makes it easier to stabilize the concentration of suspended matter contained in the air drawn into the air-conditioned room 302 from the passenger compartment 301, as measured by the suspended matter sensor 400, before the occupants get in and the vehicle starts operating. This makes it easier for stable measurement results of the suspended matter concentration to be input from the suspended matter sensor 400 to the input unit 503.

As a result, based on the stable measurement results of the concentration of suspended solids input to the input unit 503, the removal control unit 504a can easily control the suspended solids contained in the air discharged from the air conditioning chamber 302 to the passenger compartment 301 immediately when the vehicle is started after passengers get in.

As described above, before the blower 310 is started in step S40, the defroster door 230 and the face door 240 are controlled by the discharge direction control unit 504b in step S30. The defroster door 230 is controlled by the discharge direction control unit 504b so that the defroster outlet 130 is in an open state. The face door 240 is controlled by the discharge direction control unit 504b so that the face outlet 140 is in a closed state.

This makes it possible to restrict air being discharged toward the occupants in the vehicle while discharging air in a direction away from the occupants. This makes it easier to restrict the air being discharged from the air conditioning room 302 into the passenger compartment 301 from hitting the occupants before the vehicle is started. It also makes it difficult for the occupants to notice that air is being discharged from the air conditioning room 302 into the passenger compartment 301 even before the vehicle is started.

As described above, before the blower 310 is started in step S40, the amount of air discharged from the defroster outlet 130 is controlled by the discharge amount control unit 504c in step S35. Specifically, the amount of air discharged from the defroster outlet 130 is reduced by the discharge amount control unit 504c.

This helps to prevent the air exhausted from the air conditioning room 302 into the passenger compartment 301 from hitting the occupants before the vehicle is started. As with the control of the air exhaust direction, it makes it difficult for the occupants to notice that air is being exhausted from the air conditioning room 302 into the passenger compartment 301 before the vehicle is started. It also makes it difficult for the suspended solids concentration to become unstable due to the amount of exhausted air being too large.

As described above, before the blower 310 is started in step S40, the airtightness control unit 504d controls the inside/outside air switching door 210 and the window 810 in step S25. The inside/outside air switching door 210 is controlled to close the outside air intake 120. This makes it easier to prevent floating objects from entering the air-conditioned room 302 from the outside air.

By controlling the window 810, the opening of the window 810 is closed. This makes it easier to prevent floating matter from entering the vehicle interior 301 from outside the vehicle interior 301. As a result, the floating matter sensor 400 can accurately measure the concentration of floating matter that is sucked from the vehicle interior 301 into the air-conditioned room 302.

As described above, before the blower 310 is started in step S40, the compressor 350 is controlled by the compression control unit 504e in step S20. Specifically, the compressor 350 is turned off by the compression control unit 504e.

Even if the compressor 350 is turned off, the floating matter sensor 400 can accurately detect the concentration of floating matter contained in the air drawn from the passenger compartment 301 to the air-conditioning chamber 302. By turning off the compressor 350, the power consumption of the vehicle air conditioner 1000 can be reduced.

As described above, the vehicle air conditioning control device 500 has a memory unit 505 that stores the concentration of suspended solids contained in the air drawn from the vehicle interior 301 into the air-conditioned room 302 when the vehicle is stopped.

As described above, if it is determined in step S50 that the predetermined time has not elapsed since the blower 310 was started, the floating object control process proceeds from step S50 to step S100.

When it is determined in step S100 that the vehicle is starting, the floating object control process proceeds to step S105. In step S105, the memory result stored in memory unit 505 is called up, and in step S110, a first-time flag is set for this memory result.

Then, if it is determined in step S65 that the vehicle is operating, the removal device removes suspended particles contained in the air discharged from the air-conditioning chamber 302 to the passenger compartment 301 based on the stored results called up in step S105.

As a result, when the vehicle is started after passengers get in, the removal control unit 504a can easily immediately control the suspended particles contained in the air discharged from the air conditioning chamber 302 to the passenger compartment 301 based on the memory results stored in the memory unit 505.

As described above, when it is determined in step S65 that the vehicle is in operation, the measurement results input to the input unit 503 by the display unit 506 and the memory results stored in the memory unit 505 are displayed on the display 820.

This makes it possible to display a stable concentration of suspended solids contained in the air drawn into the air-conditioned room 302 from the passenger compartment 301 when the vehicle is started.

(First Modification)
Although the embodiment in which the defroster door 230 and the face door 240 are controlled by the discharge direction control unit 504b has been described, the discharge direction control unit 504b may also control, for example, the foot door 250 and the face door 240. In this case, the foot door 250 is controlled so that the foot outlet 150 is opened. The face door 240 is controlled so that the face outlet 140 is closed. Accordingly, the control unit 504 may control so that the amount of air discharged from the foot outlet 150 is reduced.

(Second Modification)
Although the removal device includes the filter 320 and the ion generating device 360 in the above description, the removal device does not have to include both. It is sufficient that the removal device includes at least the filter 320.

210...Inside/Outside Air Switching Door, 301...Vehicle Compartment, 302...Air Conditioning Room, 310...Blower, 330...Evaporator, 350...Compressor, 360...Ion Generator, 400...Floating Object Sensor, 501...Determination Unit, 502...Startup Unit, 503...Input Unit, 504a...Removal Control Unit, 504b...Discharge Direction Control Unit, 504c...Discharge Amount Control Unit, 504d...Airtightness Control Unit, 504e...Compression Control Unit, 505...Memory Unit, 506...Display Unit, 620...Door Sensor, 630...Remote Air Conditioning Sensor, 640...User Detection Sensor, 820...Display Unit

Claims (9)

an activation unit (502) that activates a blower (310) that draws air from at least one of a vehicle interior (301) and the exterior of the vehicle into an air-conditioning chamber (302) and exhausts air from the air-conditioning chamber to the vehicle interior;
an input unit (503) for inputting a measurement result measured by a floating matter sensor (400) for measuring the concentration of floating matter contained in the air drawn into the air-conditioned room;
a removal control unit (504a) for controlling a removal device (210, 360) for removing the floating matter based on the measurement result input from the floating matter sensor to the input unit after the blower is started,
The starting unit starts the blower before a vehicle is started based on external information before a passenger gets in the vehicle, and the measurement result before the vehicle is started is input to the input unit,
An air conditioning control device for a vehicle, wherein when the vehicle is started after a passenger gets in , the removal control unit controls the removal device based on the measurement result before the vehicle is started . The vehicle air conditioning control device according to claim 1, further comprising an exhaust direction control unit (504b) that controls the exhaust direction of the air exhausted from the air conditioning chamber to the vehicle cabin based on the external information prior to the activation unit. The vehicle air conditioning control device according to claim 1 or 2, further comprising an exhaust control unit (504c) that controls the amount of air exhausted from the air conditioning chamber to the vehicle cabin based on the external information prior to the activation unit. The vehicle air conditioning control device according to any one of claims 1 to 3, further comprising an airtightness control unit (504d) that performs control to increase the airtightness of the vehicle compartment based on the external information prior to the activation unit. The vehicle air conditioning control device according to any one of claims 1 to 4, further comprising a compression control unit (504e) that performs control to turn off a compressor (350) that compresses a refrigerant flowing to a cooler (330) that cools air discharged from the air conditioning chamber to the vehicle cabin, based on the external information prior to the start-up unit. The vehicle air conditioning control device according to any one of claims 1 to 5, wherein the external information includes at least one of a door sensor (620), a remote air conditioning sensor (630), and a user detection sensor (640). A memory unit (505) for storing the concentration of the suspended matter when the vehicle is stopped,
when the vehicle is started after a predetermined time has elapsed since the start of the blower, the removal control unit controls the removal device based on the measurement result input to the input unit;
An air conditioning control device for a vehicle as described in any one of claims 1 to 6, wherein when the vehicle is started before a predetermined time has elapsed since the blower is started, the removal control unit controls the removal device based on the memory results stored in the memory unit. The vehicle air conditioning control device according to claim 7, wherein the predetermined time is a time during which the concentration of the suspended matter is expected to stabilize. The vehicle air conditioning control device according to claim 7 or 8, further comprising a display unit (506) that displays the measurement results input to the input unit or the memory results stored in the memory unit on a display (820) when the vehicle is started.

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