Air-conditioning system of vehicle
The vehicle air conditioning system optimizes energy use by executing drying control only when no user is detected, using remote signals to prevent window glass fogging and maintain anti-fog performance.
Patent Information
- Application Number
- JP2023218848
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-07-08
AI Technical Summary
Conventional methods to prevent window glass fogging in vehicles lead to energy loss due to the need for increased heater output when outside air is introduced, and there's a risk of reduced anti-fog performance if high-humidity air is introduced during parking, causing moisture absorption.
A vehicle air conditioning system with a controller that executes drying control of the window glass using outside air when no user is detected, triggered by signals like remote operation or reservation, and stops when a user boards, thereby optimizing energy use and preventing fogging.
The system effectively prevents window glass fogging while minimizing energy loss by the air conditioner, ensuring the anti-fog film is dry when needed, and avoiding unnecessary energy consumption.
Smart Images
Figure 2025101815000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a vehicle air conditioning system.
Background Art
[0002] When the surface temperature of the vehicle-side of the window glass of a vehicle becomes below the dew point due to the temperature difference between the inside and outside of the vehicle compartment and the humidity inside the vehicle compartment, condensation occurs on the surface of the vehicle-side of the window glass. As a result, the window glass becomes foggy, which hinders the driver's visibility. Therefore, conventionally, by using the vehicle air conditioner to blow low-humidity air introduced from outside the vehicle towards the surface of the vehicle-side of the window glass and evaporate the condensed water droplets, the fog on the window glass has been removed.
[0003] In addition, a technique is also known in which a water-absorbing film (water-absorbing film) is provided on the surface of the vehicle-side of the window glass to prevent the occurrence of condensation, which is the cause of fogging. In a vehicle having a window glass with such a water-absorbing film formed thereon, in order to dry the moisture absorbed by the water-absorbing film and restore the anti-fog performance, it has been proposed to partially introduce outside air during the running of the vehicle to dry and regenerate the water-absorbing film, and when it is determined that the vehicle has stopped, to introduce outside air for a predetermined time (see, for example, Patent Document 1).
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] However, when the outside air temperature is lower than the inside air temperature of the vehicle cabin and the air conditioner is operating according to the set temperature set by the vehicle occupants, if outside air is introduced for defogging the window glass or drying the water absorption film, the temperature inside the vehicle cabin will decrease. As a result, it is necessary to increase the output of a heater or the like to maintain the set temperature, so the energy loss due to the air conditioner increases. Also, even if outside air is introduced for a predetermined time during parking determination to dry the water absorption film, there is a possibility that high-humidity air will enter the vehicle cabin and the water absorption film will absorb moisture before the user uses the vehicle next time, resulting in a decrease in the anti-fog performance.
[0006] The present invention has been made to solve such problems, and an object thereof is to provide a vehicle air conditioning system capable of preventing fogging of window glass while suppressing energy loss due to the air conditioner.
Means for Solving the Problems
[0007] To solve the above-described problems, the present invention provides a vehicle air conditioning system including: an air conditioner capable of introducing air from outside the vehicle cabin and circulating air inside the vehicle cabin; a boarding detection device that detects boarding of a user on the vehicle; a receiving device that receives a signal transmitted from outside the vehicle; and a controller configured to control the air conditioner. The controller is configured to cause the air conditioner to execute drying control of blowing the air introduced from outside the vehicle cabin toward the surface on the vehicle cabin side of the vehicle window glass when the boarding detection device does not detect boarding of a user on the vehicle and the receiving device receives a predetermined signal related to the operation of the air conditioner.
[0008] According to the present invention configured as described above, when the controller detects that the user has not boarded the vehicle by the boarding detection device and the receiving device receives a predetermined signal related to the operation of the air conditioner, the controller causes the air conditioner to perform drying control to blow out the air introduced from outside the vehicle compartment toward the surface on the vehicle compartment side of the vehicle window glass. Therefore, when there is no occupant in the vehicle compartment and there is no need to use a heater or the like for temperature adjustment, and it is considered that the user intends to use the vehicle soon because a predetermined signal related to the operation of the air conditioner has been received, the drying control can be executed. Thereby, while suppressing the energy loss by the air conditioner, it is possible to prevent the window glass from fogging when the user uses the vehicle.
[0009] In the present invention, preferably, the predetermined signal includes at least one of a remote air-conditioning signal for remotely operating the air conditioner from outside the vehicle, a remote start signal for remotely starting the vehicle from outside the vehicle, and an air-conditioning reservation signal for specifying in advance the time to operate the air conditioner.
[0010] According to the present invention configured as described above, when there is no user in the vehicle and at least one of a remote air-conditioning signal, a remote start signal, and an air-conditioning reservation signal, which indicates a high probability that the user intends to use the vehicle soon, is received, the drying control can be executed. Thereby, while suppressing the energy loss by the air conditioner, it is possible to more reliably prevent the window glass from fogging when the user uses the vehicle.
[0011] In the present invention, preferably, the controller is configured to end the drying control when the boarding detection device detects that the user has boarded the vehicle during the execution of the drying control.
[0012] According to the present invention configured as described above, when there is an occupant in the vehicle compartment and it is necessary to use a heater or the like for temperature adjustment, the controller ends the drying control for introducing outside air, so that while preventing the window glass from fogging, the energy loss by the air conditioner can be suppressed.
[0013] In the present invention, preferably, an outside air humidity sensor for measuring the humidity of the air outside the vehicle compartment is provided, and when the controller does not detect the user's boarding on the vehicle by the boarding detection device and the receiving device receives a predetermined signal, and the humidity of the air outside the vehicle compartment measured by the outside air humidity sensor is less than a predetermined threshold value, the controller is configured to cause the air conditioner to execute drying control.
[0014] According to the present invention configured as described above, when it is considered that the user is not boarding the vehicle and the user intends to use the vehicle in the near future, drying control can be executed when the humidity of the outside air is low enough to dry the water absorption film. Thereby, while suppressing the energy loss by the air conditioner, it is possible to more reliably prevent the window glass from fogging when the user uses the vehicle. Further, when the humidity of the outside air is equal to or higher than a predetermined threshold value and the water absorption film cannot be sufficiently dried even if outside air is introduced and drying control is executed, drying control is not executed, so that unnecessary energy loss can be prevented.
[0015] In the present invention, preferably, a water absorption rate sensor for measuring the water absorption rate of the water absorption film provided on the surface on the vehicle compartment side of the vehicle window glass is provided, and when the controller does not detect the user's boarding on the vehicle by the boarding detection device and the receiving device receives a predetermined signal, and the water absorption rate of the water absorption film measured by the water absorption rate sensor is greater than a predetermined threshold value, the controller is configured to cause the air conditioner to execute drying control.
[0016] According to the present invention configured as described above, when it is considered that the user is not boarding the vehicle and the user intends to use the vehicle in the near future, drying control can be executed when the water absorption rate of the water absorption film is high enough to require drying the water absorption film. Thereby, by suppressing the execution frequency of the drying control to a necessary and sufficient level, the energy loss by the air conditioner can be suppressed, and the window glass can be reliably prevented from fogging when the user uses the vehicle.
[0017] In the present invention, preferably, the boarding detection device has a communication device that can communicate with a portable device carried by a user when the portable device approaches within a predetermined range from the vehicle, and the controller determines that the user's boarding on the vehicle has been detected when the communication device communicates with the portable device.
[0018] According to the present invention configured as described above, when the communication device communicates with the portable device, if it is highly likely that the user will board the vehicle immediately, it is determined that the user's boarding on the vehicle has been detected. Therefore, when the user boards the vehicle, the drying control can be surely stopped, and it is possible to prevent the user from feeling bothered.
Advantages of the Invention
[0019] According to the air conditioning system of the vehicle of the present invention, it is possible to prevent the window glass from fogging while suppressing the energy loss by the air conditioner.
Brief Description of the Drawings
[0020]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Embodiments for Carrying Out the Invention
[0021] Hereinafter, with reference to the accompanying drawings, an air conditioning system of a vehicle according to an embodiment of the present invention will be described.
[0022] [System Configuration] First, referring to FIGS. 1 and 2, the configuration of the vehicle air conditioning system according to this embodiment will be described. FIG. 1 is an explanatory view of a vehicle equipped with the air conditioning system, and FIG. 2 is a block diagram of the vehicle air conditioning system.
[0023] The vehicle 1 equipped with the air conditioning system 100 according to this embodiment includes a front window 2. On the surface of the front window 2 on the passenger compartment side, a water-absorbing film 4, which is a water-absorbing coating, is formed. Existing technologies can be used for the water-absorbing film 4. For example, a water-absorbing crosslinked resin layer or a ceramics layer is formed as the water-absorbing film 4 on the surface of the front window 2 on the passenger compartment side.
[0024] The air conditioning system 100 is configured to execute normal control for adjusting the temperature inside the vehicle according to the set temperature set by the occupant, or to execute drying control for blowing the introduced outside air onto the front window 2 to dry the water-absorbing film 4. The air conditioning system 100 includes a controller 10, a plurality of sensors, and an air conditioner 30.
[0025] Specifically, the plurality of sensors include an antenna unit 21 that performs wireless communication with external devices of the vehicle 1, a seating sensor 22 that detects that the occupant has seated on the seat, an outside air temperature and humidity sensor 23 that measures the temperature and humidity of the air outside the vehicle (outside air), an inside air temperature and humidity sensor 24 that measures the temperature and humidity of the air inside the vehicle (inside air), and a water absorption rate sensor 25 that measures the water absorption rate of the water-absorbing film 4 of the front window 2. The air conditioner 30 includes an inside / outside air ratio switching valve 36, an air outlet switching valve 37, a blower 35, a compressor 38, and a heater 39.
[0026] The controller 10 executes various calculations based on the signals received from the plurality of sensors, and transmits control signals for appropriately operating the inside / outside air ratio switching valve 36, the air outlet switching valve 37, the blower 35, the compressor 38, and the heater 39 to the air conditioner 30. The controller 10 is composed of a computer including one or more processors 10a (typically a CPU), a memory 10b (such as ROM and RAM) that stores various programs and data, an input / output device, and the like.
[0027] The antenna unit 21 includes a receiving device that receives signals transmitted from outside the vehicle 1 via a mobile communication line or a wireless LAN line. Further, the antenna unit 21 includes a communication device that enables communication with a portable device (so-called smart key or intelligent key) carried by a user when the portable device approaches the vehicle 1 within a predetermined range (for example, within 3 m). Note that the antenna unit 21 corresponds to an example of the "receiving device", "communication device", and "boarding detection device" in the present invention.
[0028] The seating sensor 22 detects that an occupant has seated on the seat of the vehicle 1. For example, the seating sensor 22 includes one or a plurality of piezoelectric elements disposed inside the seat surface of the seat, detects the presence or absence of an occupant's seating based on the load applied to the seat surface, and outputs it to the controller 10. Note that the seating sensor 22 corresponds to an example of the "boarding detection device" in the present invention.
[0029] The outside air temperature and humidity sensor 23 and the inside air temperature and humidity sensor 24 each include a temperature sensor and a humidity sensor, and measure the ambient temperature and humidity.
[0030] The water absorption rate sensor 25 measures the water absorption rate of the water absorption film 4. The water absorption rate is a value representing the ratio of the current water absorption amount to the saturated water absorption amount of the water absorption film 4, and takes a value from 0 to 1. That is, when the water absorption rate is 0, the water absorption amount of the water absorption film 4 is 0, and when the water absorption rate is 1, the water absorption amount of the water absorption film 4 is equal to the saturated water absorption amount. The water absorption rate sensor 25 includes, for example, a capacitor formed by attaching two electrodes to the water absorption film 4 so that a part of the water absorption film 4 functions as a dielectric. The capacitance of this capacitor changes according to the amount of moisture absorbed by the water absorption film 4. Therefore, by previously grasping the relationship between the capacitance value of the capacitor and the water absorption rate, the water absorption rate can be measured based on the capacitance value obtained from the capacitor.
[0031] The air conditioner 30 includes an outside air inlet 31 for introducing air from outside the vehicle compartment, an inside air circulation port 32 for taking in the air inside the vehicle compartment to circulate the air inside the vehicle compartment, an indoor side air outlet 33 for blowing out the air taken into the air conditioner 30 into the vehicle compartment, and a window side air outlet 34 for blowing out the air taken into the air conditioner 30 toward the front window 2. Inside the air conditioner 30, a blower 35 is provided for drawing in air from the outside air inlet 31 and the inside air circulation port 32 and blowing it out from the indoor side air outlet 33 and the window side air outlet 34.
[0032] The outside air inlet 31 and the inside air circulation port 32 are each provided with an inside / outside air ratio switching valve 36. When the inside / outside air ratio switching valve 36 of the outside air inlet 31 opens during the operation of the blower 35, air is introduced from outside the vehicle compartment, and when the inside / outside air ratio switching valve 36 of the inside air circulation port 32 opens, the air inside the vehicle compartment is circulated.
[0033] Also, the indoor side air outlet 33 and the window side air outlet 34 are each provided with an air outlet switching valve 37. When the air outlet switching valve 37 of the indoor side air outlet 33 opens during the operation of the blower 35, air is blown out from the indoor side air outlet 33 into the vehicle compartment, and when the air outlet switching valve 37 of the window side air outlet 34 opens, air is blown out from the window side air outlet 34 toward the front window 2.
[0034] Furthermore, the air conditioner 30 includes a compressor 38 for compressing the refrigerant used for cooling and heating the air taken into the air conditioner 30 and sending it to the heat exchanger, and a heater 39 for heating the air taken into the air conditioner 30. The controller 10 transmits control signals for operating the inside / outside air ratio switching valve 36, the air outlet switching valve 37, the blower 35, the compressor 38, and the heater 39 of the air conditioner 30 when performing normal control for adjusting the temperature inside the vehicle compartment or when performing drying control for drying the water absorption film 4.
[0035] [Air Conditioning Control Processing] Next, with reference to FIGS. 3 and 4, the flow of the air-conditioning control process by the air-conditioning system 100 of the vehicle 1 in the present embodiment will be described. FIG. 3 is a flowchart of the boarding determination process, and FIG. 4 is a flowchart of the air-conditioning control process. The boarding determination process and the air-conditioning control process are repeatedly executed in parallel by the controller 10 at a predetermined cycle (for example, every 0.05 to 0.2 seconds).
[0036] The boarding determination process in FIG. 3 is a process for determining whether or not a user has boarded the vehicle 1. When the boarding determination process is started, the controller 10 acquires signals from the antenna unit 21 and the seating sensor 22 (step S1).
[0037] Next, the controller 10 determines whether or not the antenna unit 21 has received a signal from a portable device (so-called smart key or intelligent key) based on the signal acquired from the antenna unit 21 in step S1 (step S2).
[0038] As a result, when the antenna unit 21 has received a signal from the portable device (step S2: YES), it is considered that the user holding the portable device has approached within a predetermined range of the vehicle 1 and will soon board the vehicle 1. Therefore, the controller 10 determines that the user's boarding of the vehicle 1 has been detected and sets the driver boarding flag to TURE (step S3). The driver boarding flag is stored in, for example, a memory and is updated as needed according to the processing of the controller 10.
[0039] On the other hand, in step S2, when the antenna unit 21 has not received a signal from the portable device (step S2: NO), the controller 10 determines whether or not the load on any seat is equal to or greater than a predetermined value (for example, 15 kg) based on the signal acquired from the seating sensor 22 in step S1 (step S4).
[0040] As a result, when the load on any seat is equal to or greater than a predetermined value (step S4: YES), it is considered that the user is seated on the seat. Therefore, the controller 10 determines that the user has boarded the vehicle 1 and sets the driver boarding flag to TURE (step S3).
[0041] In step S4, when the load on any seat is not equal to or greater than the predetermined value (step S4: NO), the controller 10 determines that the user has not boarded the vehicle 1 and sets the driver boarding flag to FALSE (step S5). After the processing in step S3 or S5, the controller 10 ends the boarding determination process.
[0042] The air conditioning control process in FIG. 4 is a process for executing drying control for drying the water absorption film 4 under predetermined conditions. When the air conditioning control process is started, the controller 10 acquires signals from the antenna unit 21, the outside air temperature and humidity sensor 23, the inside air temperature and humidity sensor 24, and the water absorption rate sensor 25 (step S11). Further, the controller 10 refers to the memory and acquires the current driver boarding flag (step 12). Note that the acquisition of signals from the antenna unit 21, the outside air temperature and humidity sensor 23, the inside air temperature and humidity sensor 24, and the water absorption rate sensor 25, and the acquisition of the driver boarding flag are always executed in the background in the processes after step S12.
[0043] Next, the controller 10 determines whether the driver boarding flag acquired in step S12 is FALSE (step S13).
[0044] When the driver boarding flag is TRUE (step S13, NO), that is, when the boarding of the user on the vehicle 1 is detected, if drying control for introducing outside air is executed, it is necessary to increase the output of the heater 39 or the like to prevent the temperature inside the vehicle compartment from dropping, and the energy loss by the air conditioner 30 increases. Therefore, the controller 10 ends the air conditioning control process without executing the drying control.
[0045] On the other hand, when the driver boarding flag is FALSE (step S13, YES), that is, when the user's boarding of vehicle 1 has not been detected, the controller 10 determines whether it has received a signal (dry control start trigger) that serves as a trigger to start dry control based on the signal acquired from the antenna unit 21 in step S11 (step S14).
[0046] The dry control start trigger includes at least one of a remote air - conditioning signal, a remote start signal, and an air - conditioning reservation signal. The remote air - conditioning signal is a signal for remotely operating the air - conditioning device 30 from outside vehicle 1, and can include information specifying, for example, the start of the air - conditioning device 30, the set temperature, the operating time, etc. The remote start signal is a signal for remotely starting vehicle 1 from outside vehicle 1. The air - conditioning reservation signal is a signal for specifying in advance the time to operate the air - conditioning device 30, and can include information specifying, for example, the reserved time to operate the air - conditioning device 30, the set temperature, the operating time, etc. When the air - conditioning reservation signal is received, the process may be executed with the time a predetermined time (for example, 15 minutes) before the reserved time as the reception time of the dry control start trigger for subsequent processing.
[0047] When the antenna unit 21 has not received any of the remote air - conditioning signal, the remote start signal, and the air - conditioning reservation signal as the dry control start trigger (step S14: NO), that is, when there is no sign that the user will use vehicle 1 in the near future, even if dry control is executed, there is a possibility that the water - absorbing film 4 will absorb moisture again before the user uses vehicle 1 next. Therefore, the controller 10 ends the air - conditioning control process without executing the dry control.
[0048] On the one hand, when the antenna unit 21 receives any one of a remote air-conditioning signal, a remote start signal, and an air-conditioning reservation signal as a drying control start trigger (step S14: YES), it is considered that the user intends to use the vehicle 1 soon. In this case, the controller 10 determines whether the humidity of the outside air is less than a predetermined threshold value based on the signal acquired from the outside air temperature and humidity sensor 23 (step S15). The predetermined threshold value is the maximum value of the humidity of the outside air that enables the water absorption film 4 to be dried until the water absorption rate falls below the desired water absorption rate by blowing the outside air toward the water absorption film 4. For example, it is 60%, but it may be changed as appropriate.
[0049] When the humidity of the outside air is not less than the predetermined threshold value (step S15: NO), that is, when the humidity of the outside air is equal to or higher than the threshold value, the water absorption film 4 cannot be sufficiently dried even if the outside air is introduced and drying control is executed. Therefore, the controller 10 ends the air-conditioning control process without executing the drying control.
[0050] On the other hand, when the humidity of the outside air is less than the predetermined threshold value (step S15: YES), the controller 10 determines whether the water absorption rate of the water absorption film 4 is greater than a predetermined threshold value based on the signal acquired from the water absorption rate sensor 25 (step S16). The predetermined threshold value can be set, for example, according to how frequently the drying control is to be executed. That is, when it is desired to increase the frequency of execution of the drying control, the threshold value can be set low so that the drying control is easily executed. In the present embodiment, the threshold value is, for example, 0.2, but it may be changed as appropriate.
[0051] When the water absorption rate of the water absorption film 4 is not greater than the predetermined threshold value (step S16: NO), that is, when the water absorption rate is equal to or less than the predetermined threshold value, the water absorption rate of the water absorption film 4 is already sufficiently low, and there is no need to execute the drying control. Therefore, the controller 10 ends the air-conditioning control process without executing the drying control.
[0052] On the other hand, when the water absorption rate of the water absorption film 4 is greater than a predetermined threshold value (step S16: YES), the controller 10 causes the air conditioner 30 to perform drying control (step S17). Specifically, the controller 10 maximizes the output of the blower 35, opens the inside / outside air rate switching valve 36 at the outside air inlet 31, and closes the inside / outside air rate switching valve 36 at the inside air circulation port 32, so that the outside air rate (outside air introduction rate) of the air taken into the air conditioner 30 is 100%. Further, the controller 10 closes the outlet switching valve 37 at the indoor side outlet 33 and opens the outlet switching valve 37 at the window side outlet 34, so that the introduced outside air is jetted toward the front window 2.
[0053] Next, the controller 10 determines whether the current driver boarding flag is TRUE (step S18). As a result, when the driver boarding flag is not TRUE (step S18: NO), that is, when the boarding of the user on the vehicle 1 has not been detected, the controller 10 determines whether the current water absorption rate of the water absorption film 4 is less than or equal to a predetermined threshold value based on the signal acquired from the water absorption rate sensor 25 (step S19). As a result, when the water absorption rate is not less than or equal to the predetermined threshold value (step S19: NO), that is, when the drying of the water absorption film 4 is not sufficient, the process returns to step S18. Thereafter, the determinations in steps S18 and S19 are repeated until the driver boarding flag becomes TRUE or the water absorption rate becomes less than or equal to the predetermined threshold value.
[0054] When the current driver boarding flag becomes TRUE (step S18: YES), or when the current water absorption rate of the water absorption film 4 becomes less than or equal to the predetermined threshold value (step S19: YES), the controller 10 ends the drying control by the air conditioner 30 (step S20) and ends the air conditioning control process.
[0055] [Operation of the air conditioning system] Next, with reference to FIG. 5, a specific example of the operation of the air conditioning system 100 of the vehicle 1 according to the present embodiment will be described. FIG. 5 is a time chart for explaining an example of the operation of the air conditioning system 100.
[0056] In the example of FIG. 5, it is assumed that the humidity of the outside air is less than a threshold value (e.g., 60%). Also, at time 0 in FIG. 5, the water absorption rate of the water absorption film 4 of the front window 2 is greater than a threshold value (e.g., 0.2), the user is not in the vehicle 1, and the air conditioner 30 is stopped. Thereafter, when the antenna unit 21 receives a drying control start trigger (time t1), the controller 10 causes the air conditioner 30 to start drying control. That is, when a remote air-conditioning signal or a remote start signal is received, or when a predetermined time before the reserved time set by the reserved air-conditioning signal arrives, the operation state of the blower becomes ON and the outside air introduction rate becomes 100%. In this case, even if the drying control start trigger is a remote air-conditioning signal or a remote start signal, the controller 10 gives priority to the drying control and does not cause the air conditioner 30 to execute normal control for adjusting the temperature inside the vehicle according to the set temperature (normal air-conditioning: OFF).
[0057] By starting the drying control, the water absorption rate of the water absorption film 4 gradually decreases. Thereafter, even before the water absorption rate drops below the threshold value, when the detection of the user's boarding in the vehicle 1 is detected (time t2), the controller 10 terminates the drying control by the air conditioner 30 and starts normal control based on the information included in the remote air-conditioning signal or the remote start signal received as the drying control start trigger. That is, as shown by the solid line in FIG. 5, while the operation state of the blower remains ON, the outside air introduction rate is changed to a value less than 100% according to the set temperature (normal air-conditioning: ON), and the decrease in the water absorption rate stops.
[0058] Also, as shown by the dashed-dotted line in FIG. 5, after starting the drying control, when the detection of the user's boarding in the vehicle 1 is not detected, at the time when the water absorption rate drops below the threshold value (time t3), the controller 10 terminates the drying control by the air conditioner 30 and starts normal control based on the information included in the remote air-conditioning signal or the remote start signal received as the drying control start trigger. Also, when a reserved air-conditioning signal is received as the drying control start trigger, the controller 10 starts normal control at the reserved time set based on the reserved air-conditioning signal.
[0059] [Operation and Effect] Next, the operation and effect of the air conditioning system 100 of the vehicle 1 according to the above-described embodiment will be described.
[0060] When the controller 10 does not detect the user's boarding of the vehicle 1 by the boarding detection device and the receiving device receives the drying control start trigger, the controller 10 causes the air conditioner 30 to execute drying control for blowing out the air introduced from outside the vehicle compartment toward the surface on the vehicle compartment side of the vehicle window glass. Therefore, in a situation where there is no occupant in the vehicle compartment and it is not necessary to use the heater 39 or the like for temperature adjustment, when it is considered that the user intends to use the vehicle 1 soon because a predetermined signal regarding the operation of the air conditioner 30 has been received, drying control can be executed. Thereby, while suppressing the energy loss by the air conditioner 30, it is possible to prevent the window glass from fogging when the user uses the vehicle 1.
[0061] Further, since the drying control start trigger includes at least one of a remote air conditioning signal, a remote start signal, and an air conditioning reservation signal, when at least one of the highly probable remote air conditioning signal, remote start signal, and air conditioning reservation signal indicating that there is no user boarding the vehicle 1 and the user intends to use the vehicle 1 soon is received, drying control can be executed. Thereby, while suppressing the energy loss by the air conditioner 30, it is possible to more reliably prevent the window glass from fogging when the user uses the vehicle 1.
[0062] Further, when the controller 10 detects the user's boarding of the vehicle 1 during the execution of the drying control, the controller 10 ends the drying control. Therefore, when there is an occupant in the vehicle compartment and it is necessary to use the heater 39 or the like for temperature adjustment, the controller 10 ends the drying control for introducing outside air, so that it is possible to suppress the energy loss by the air conditioner 30 while preventing the window glass from fogging.
[0063] Further, when the controller 10 does not detect the user getting into the vehicle 1 and the receiving device receives a drying control start trigger, if the humidity of the outside air is less than a predetermined threshold value, the controller 10 causes the air conditioner 30 to execute drying control. Therefore, when the user is not in the vehicle 1 and it is considered that the user intends to use the vehicle 1 soon, drying control can be executed when the humidity of the outside air is low enough to dry the water absorption film 4. As a result, while suppressing the energy loss caused by the air conditioner 30, it is possible to more reliably prevent the window glass from fogging when the user uses the vehicle 1. Further, when the humidity of the outside air is equal to or higher than a predetermined threshold value and the water absorption film 4 cannot be sufficiently dried even if outside air is introduced and drying control is executed, drying control is not executed, so that unnecessary energy loss can be prevented.
[0064] Further, when the controller 10 does not detect the user getting into the vehicle 1 and the receiving device receives a drying control start trigger, if the water absorption rate of the water absorption film 4 is greater than a predetermined threshold value, the controller 10 causes the air conditioner 30 to execute drying control. Therefore, when the user is not in the vehicle 1 and it is considered that the user intends to use the vehicle 1 soon, drying control can be executed when the water absorption rate of the water absorption film 4 is high enough to require drying the water absorption film 4. As a result, by suppressing the execution frequency of drying control to a necessary and sufficient level, the energy loss caused by the air conditioner 30 is suppressed, and it is possible to reliably prevent the window glass from fogging when the user uses the vehicle 1.
[0065] In addition, when it is highly likely that the user will immediately get into the vehicle 1 due to the communication device communicating with the mobile device, it is determined that the user getting into the vehicle 1 has been detected. Therefore, when the user gets into the vehicle 1, the drying control can be surely stopped, and it is possible to prevent the user from feeling annoyed.
Explanation of Signs
[0066] 1 Vehicle 2 Front Window 4 Water Absorption Film 10 Controller 21 Antenna section 22 Seating sensor 23 Outside air temperature and humidity sensor 24 Inside air temperature and humidity sensor 25 Water absorption rate sensor 30 Air conditioner 31 Outside air inlet 32 Inside air circulation port 33 Indoor side air outlet 34 Window side air outlet 35 Blower 36 Inside / outside air ratio switching valve 37 Air outlet switching valve 38 Compressor 39 Heater 100 Air conditioning system
Claims
1. An air conditioning system for a vehicle, comprising: an air conditioner capable of introducing air from outside the vehicle compartment and circulating air inside the vehicle compartment; a boarding detection device for detecting the boarding of a user on the vehicle; a receiving device for receiving a signal transmitted from outside the vehicle; a controller configured to control the air conditioner, wherein the controller: when the boarding detection device does not detect the boarding of a user on the vehicle and the receiving device receives a predetermined signal related to the operation of the air conditioner, is configured to cause the air conditioner to perform a drying control of blowing the air introduced from outside the vehicle compartment toward the surface on the vehicle compartment side of the vehicle window glass; An air conditioning system for a vehicle.
2. The predetermined signal includes at least one of a remote air conditioning signal for remotely operating the air conditioner from outside the vehicle, a remote start signal for remotely starting the vehicle from outside the vehicle, and an air conditioning reservation signal for designating in advance a time for operating the air conditioner. The air conditioning system for a vehicle according to Claim 1.
3. The controller is configured to terminate the drying control when the boarding detection device detects the boarding of a user on the vehicle during the execution of the drying control. The air conditioning system for a vehicle according to Claim 1 or 2.
4. Comprising an outside air humidity sensor for measuring the humidity of the air outside the vehicle compartment, wherein the controller: when the boarding detection device does not detect the boarding of a user on the vehicle and the receiving device receives the predetermined signal, and when the humidity of the air outside the vehicle compartment measured by the outside air humidity sensor is less than a predetermined threshold value, is configured to cause the air conditioner to perform the drying control. The air conditioning system for a vehicle according to Claim 1 or 2.
5. Comprising a water absorption rate sensor for measuring the water absorption rate of a water absorption film provided on the surface on the vehicle compartment side of the vehicle window glass, wherein the controller: when the boarding detection device does not detect the boarding of a user on the vehicle and the receiving device receives the predetermined signal, and when the water absorption rate of the water absorption film measured by the water absorption rate sensor is greater than a predetermined threshold value, is configured to cause the air conditioner to perform the drying control. The air conditioning system for a vehicle according to Claim 1 or 2.
6. The boarding detection device has a communication device that can communicate with the portable device when the portable device carried by the user approaches within a predetermined range from the vehicle. When the communication device communicates with the portable device, the controller determines that boarding of the user onto the vehicle has been detected. The air conditioning system for a vehicle according to claim 1 or 2.
Citation Information
Patent Citations
Vehicular air-conditioner
JP2009298323A