JP2013203356A - Air conditioner of vehicle with idle reduction mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the comfort of a vehicle-interior environment even if an air-conditioning mode is switched to a blast mode from a cooling mode or a heating mode and so fourth during an idle reduction of an engine.SOLUTION: In a configuration which includes an idle reduction control unit 61 for temporarily stopping an engine during a stop of a vehicle, an air-conditioning unit 10 and an air-conditioning control unit 70, a fragrance delivery unit 30 for delivering fragrance into a vehicle interior and a fragrance control part 75 are provided. When the idle reduction of the engine is performed by the idle reduction control unit 61, an air-conditioning mode is switched to a blast mode for inside-air circulation from a cooling mode or a heating mode by the air-conditioning control unit 70, the fragrance is delivered into the vehicle interior by operating the fragrance delivery unit 30 by the fragrance control part 75, and the amount of the delivery of the fragrance is increased with the passage of time.

Description

  The present invention relates to a vehicle air conditioner with an idling stop mechanism, and more particularly to control of air conditioning during engine idling stop, and belongs to the field of vehicle air conditioning technology.

  In recent years, in order to improve fuel economy, vehicles equipped with an idling stop mechanism that automatically stops the engine under certain conditions at the time of stopping have been put into practical use along with improvements in engine combustion and weight reduction of the vehicle body. During this, the battery is not charged because the generator is stopped as the engine is stopped, and therefore, there is a need to suppress the use of electric power.

  Therefore, during idling stop, by controlling the compressor of the air conditioner, etc., the air conditioning mode is controlled to switch from the cooling mode or heating mode with high power consumption to the blowing mode with low power consumption where only the fan operates. There is a case.

  However, if the air conditioning mode is switched from the cooling mode to the air blowing mode, the cooling stops and the vehicle interior temperature gradually increases during idling stop. If the air conditioning mode is switched from the heating mode to the air blowing mode, heating stops during the idling stop. The vehicle interior temperature gradually decreases, and in either case, comfort in the vehicle interior is impaired.

  As for the environment in the passenger compartment, Patent Document 1 discloses a technique in which charged fine particle water is discharged into the passenger compartment to improve the hair quality of the passenger and to keep the skin moist. No. 2 discloses that a scent having an awakening effect is released into the passenger compartment in order to wake up the driver's sleepiness while driving the vehicle.

JP 2010-76591 A JP 08-318732 A

  Both of those disclosed in Patent Documents 1 and 2 attempt to control the vehicle interior environment to a predetermined state by using an air conditioner. However, these technologies stop the cooling and heating during idling stop of the engine. Does not deal with. Therefore, an object of the present invention is to realize an air conditioner that can maintain comfort in the passenger compartment against an increase or decrease in the passenger compartment temperature due to stop of cooling and heating during idling stop.

  In order to solve the above-described problems, an air conditioner for a vehicle with an idling stop mechanism according to the present invention is configured as follows.

First, the invention according to claim 1 of the present application is
A vehicle air conditioner provided with idling stop means for temporarily stopping the engine when the vehicle is in a stopped state,
An air conditioning control means for switching the air conditioning mode to an internal air circulation blow mode when the engine is stopped by the idling stop means in a cooling mode or a heating mode state;
Scent delivery means for delivering scent into the passenger compartment;
A scent control means for causing the scent delivery means to send a scent into the vehicle interior during a predetermined period when the engine is stopped by the idling stop means, and increasing the delivery amount and / or changing the scent as time elapses. It is characterized by.

  Here, the scent control means has a case where the scent is sent out when the engine is stopped and a case where the scent is sent after a predetermined time has elapsed after the engine is stopped. Moreover, the case where the kind of fragrance currently sent out and the case where a density | concentration is changed are contained in the aspect which changes a fragrance.

The invention according to claim 2 is the invention according to claim 1,
The air conditioning control means is characterized in that after the air conditioning mode is switched to the air blowing mode, the air blowing amount is changed over time.

The invention according to claim 3 is the invention according to claim 2, wherein the air conditioning control means repeats the air blowing state and the air blowing stop state in the air blowing mode, and adjusts the execution time of each state to adjust the air blowing amount. It is characterized by controlling.

The invention according to claim 4 is the invention according to any one of claims 1 to 3,
The scent delivery means is capable of delivering a scent having a cool feeling action and a scent having a warm feeling action,
The scent control means sends out a scent having a cool feeling when the air conditioning mode is switched from the cooling mode to the air blowing mode, and a scent having a warm feeling when the air conditioning mode is switched from the heating mode to the air blowing mode. It is characterized by being sent out.

  With the above configuration, according to the invention of each claim of the present application, the following effects can be obtained.

  According to the first aspect of the present invention, when the engine is stopped by the idling stop means while the air conditioning mode is the cooling mode or the heating mode, the air conditioning mode is switched to the internal air circulation air blowing mode. Power consumption is suppressed, and the deterioration of the comfort in the passenger compartment due to the introduction of outside air is suppressed.

  In other words, when the outside air temperature is high and the air conditioning mode before idling stop is the cooling mode, the rise in the vehicle interior temperature due to the introduction of hot outside air while cooling is stopped is suppressed, and the outside air temperature When the air conditioning mode before idling stop is the heating mode, a decrease in the vehicle interior temperature due to the introduction of the low temperature outside air while the heating is stopped is suppressed.

  And since the scent is sent out to the passenger compartment for a predetermined period during idling stop, it becomes possible to alleviate and suppress discomfort due to the cooling or heating being stopped by the effect of this scent, and according to the passage of time, Since the amount of scent delivered increases and / or the scent changes, the discomfort suppressing effect by sending out the scent to the rise in the cabin temperature due to the stop of cooling or the fall of the cabin temperature caused by stopping the heating Can be increased.

  As a result, in combination with the above-described effect due to the inside air circulation, the comfort in the passenger compartment is maintained even after the cooling or heating is stopped.

  According to the second aspect of the present invention, since the air volume changes with the passage of time after the air conditioning mode is switched to the air blowing mode when the engine is idling stopped, the comfort in the passenger compartment is more effectively improved. Can be maintained.

  In that case, as a mode of changing the air flow rate, in order to increase the air flow rate in order to more positively send the scent into the vehicle interior, or to reduce the air flow rate in order to maintain the state before the cooling / heating stop as much as possible. If the cooling is stopped in consideration of the cool feeling effect due to the air blow, the air flow is increased, and when the heating is stopped, the air flow is decreased, etc., the performance of the air conditioner, the vehicle interior temperature, Or it sets suitably according to the kind etc. of the fragrance sent out.

  According to the invention described in claim 3, the air conditioning control device repeats the blowing state and the blowing stop state in the blowing mode, and controls the blowing amount by adjusting the execution time of each state. Therefore, the control of the air flow when the air flow is changed according to the above is easily executed.

  According to the fourth aspect of the present invention, when the air conditioning mode is switched from the cooling mode to the air blowing mode, a fragrance having a cool feeling is sent into the vehicle interior, and the air conditioning mode is switched from the heating mode to the air blowing mode. When the cooling stops, the discomfort caused by the rise in the passenger compartment temperature is reduced by the scent having a cooling effect, and the heating stops. Sometimes, the uncomfortable feeling caused by the temperature drop in the vehicle interior is reduced by the scent having a warming effect, and in any case, the comfort in the vehicle interior is maintained.

1 is a perspective view showing an instrument panel of a vehicle to which an embodiment of the present invention is applied. It is sectional drawing which shows the structure of the air conditioning unit in the embodiment. It is sectional drawing of the fragrance delivery unit cut | disconnected by the XX line of FIG. It is sectional drawing of the fragrance delivery unit cut | disconnected by the YY line | wire of FIG. It is sectional drawing of the scent liquid tank in a scent delivery unit. It is explanatory drawing of control which sprays a fragrance liquid. It is a block diagram of the system which performs idling stop control and fragrance delivery control. It is a flowchart which shows operation | movement of the 1st control example of fragrance delivery control. It is a flowchart which shows the operation | movement at the time of the heating stop of the example of control. It is a time chart which shows operation | movement of the example of control. It is explanatory drawing of control of the fragrance delivery amount and ventilation volume in the example of control. It is a flowchart which shows operation | movement of the 2nd control example of fragrance delivery control. It is a flowchart which shows the operation | movement at the time of the heating stop of the example of control. It is a time chart which shows operation | movement of the example of control. It is a flowchart which shows the principal part of operation | movement of the 3rd control example of fragrance delivery control. It is a flowchart which shows the principal part of operation | movement of the 4th control example of fragrance delivery control. It is sectional drawing of the fragrance delivery unit in other embodiment. It is a list | wrist which shows the example of the essential oil used by fragrance delivery control.

  Hereinafter, embodiments of an air conditioner according to the present invention will be described.

  FIG. 1 shows an instrument panel in front of a front seat of a vehicle equipped with an air conditioner of the present embodiment. The instrument panel 1 has a steering wheel 2 on one side in the width direction and a central portion. An audio operation unit 3 is provided, and a transmission operation unit 5 is disposed on the console unit 4 below the center of the instrument panel 1.

  In addition, an air conditioning unit 10 (see FIG. 2) is arranged inside the instrument panel 1 (the vehicle front side), and the instrument is used as a delivery port for sending the air-conditioned air generated by the air conditioning unit 10 into the vehicle interior. A defroster 6 provided at the front end of the panel 1 for sending air-conditioning air toward the windshield, and provided at the left and right sides and the center of the front (rear surface) of the instrument panel 1 toward the passenger A plurality of ventilators 7 to be sent out, and a foot air outlet (not shown) provided at the lower part of the instrument panel 1 to send air-conditioned air to the feet of the occupant are provided.

  As shown in FIG. 2, the air-conditioning unit 10 is operated by a blower fan 11 to cool the air taken from outside or inside the passenger compartment with an evaporator 12 or warm it with a heater core 13 so that the air-conditioning air has a required temperature and humidity. According to the operation position of the air mix door 14, an air mix chamber 15 into which the air cooled by the evaporator 12 is introduced directly or after being heated by the heater core 13 is provided.

  In addition, a defroster duct 16 that leads from the air mix chamber 15 to the defroster 6, a ventilator duct 17 that leads to the ventilator 7, and a foot air duct 18 that leads to the foot air delivery port are provided, and these ducts 16, 17, 18 are provided. A defroster door 21, a ventilator door 22, and a foot door 23 that switch between supply and non-supply of air-conditioned air to the vehicle are provided.

  The evaporator 12 is supplied with a refrigerant by a compressor, and the heater core 13 is supplied with engine coolant having a high temperature by a cooling water pump. The refrigerant is supplied to the evaporator 12 and the heater core 13 is supplied with a high temperature. The cooling mode in which the air from the blower fan 11 is cooled and introduced into the air mix chamber 15 as the operation mode (air conditioning mode) of the air conditioning unit 10 by supplying engine cooling water and controlling the operation position of the air mix door 14. It is possible to switch between a heating mode in which the air is heated and introduced into the air mix chamber 15 and a blowing mode in which the air is introduced into the air mix chamber 15 without being cooled or warmed.

  Further, by switching control of the operation positions of the defroster door 21, the ventilator door 22, and the foot door 23, it is possible to select the air-conditioning air blowing mode into the vehicle interior, and an inside / outside air switching door (not shown). With this operation, in each air conditioning mode, it is possible to select between the outside air introduction mode and the inside air circulation mode.

  The compressor and the cooling water pump are driven by a motor. Therefore, in the cooling mode and the heating mode, the power consumption of the battery is larger than in the air blowing mode in which only the blower fan 11 is operated.

  In addition to the above configuration, the air conditioner according to this embodiment includes a scent delivery unit 30 that sends scent into the vehicle compartment via the ventilator duct 17 in the air conditioning unit 10.

As shown in FIGS. 3 and 4, the scent delivery unit 30 includes a slide base 32 slidably supported by a guide portion 31 provided on the side of the ventilator duct 17, and a belt 33 attached to the slide base 32. A cool scent liquid tank 40 ₁ having a motor (not shown) that slides on the guide part 31 and storing a scent liquid that generates a scent having a function of giving a cool sensation to a person on the slide base 32. And _two tanks of the warm scent liquid tank 402 storing the scent liquid that generates a scent having an effect of giving a warm feeling to a person are placed side by side along the ventilator duct 17.

By sliding the sliding table 32 by the motor, so as to position the fragrance liquid tank 40 _1, 40 ₂ of one corresponding to the opening 17a in the side wall of the ventilator duct 17 spray position A It has become.

These aroma tank 40 _1, 40 _2, as shown in FIG. 5, a tank body 41 for storing the fragrance liquid, threadably removably has a female screw portion 42a of the inner surface at the top of the male screw portion 41a of the body 41 A cap 43, a pump 43 provided integrally on the top of the cap 42, and a push button 44 fitted to a case 43a of the pump 43 so as to be slidable up and down.

  A straw portion 45 is suspended from the center of the bottom surface of the case 43a of the pump 43 toward the bottom portion of the tank body 41, and the inside of the straw portion 45 communicates with the case 43a of the pump 43 from the bottom portion of the tank body 41. The scented liquid suction passage 45a.

  The pump 43 includes a ball 43b that opens and closes an opening portion of the suction passage 45a into the case 43a, and a piston 43c that is coupled to the bush button 44 and reduces the volume in the case 43a when the button 44 is depressed. And a spring 43d for biasing the piston 43c to an upper position, that is, a position where the volume in the case 43a is maximized, and the spray hole provided in the side of the push button 44 in the case 43a in the piston 43c. There is provided a fragrant liquid ejection passage 43e communicating with 44a.

  Then, after the push button 44 is pushed down, when the piston 43c and the push button 44 are pushed upward by the spring 43d, the fragrant liquid in the tank body 41 passes through the suction passage 45a into the case 43a of the pump 43. The scented liquid is stored in the case 43a by being sucked up and the ball 43b closing the opening of the suction path 45a, and then stored in the case 43a when the push button 44 is pushed down together with the piston 43c. The scented liquid is sprayed from the spray hole 44a on the side surface of the push button 44 through the ejection passage 43e.

As shown in FIGS. 3 and 4, the scent delivery unit 30 has a scent liquid spraying mechanism 50 provided above the scent liquid tanks 40 ₁ and 40 ₂ placed in a row on the slide table 32. And it is provided in the lower surface of the cover 1a which closes the opening part provided in the said instrument panel 1. FIG.

The scent liquid spraying mechanism 50 includes a motor 51 attached to the lower surface of the cover 1a and a cam shaft 52 driven by the motor 51. The cam shaft 52 includes the scent liquid tanks 40 ₁ and 40 _2. extending in a column direction are arranged, the tip with is supported by a bearing portion 53 provided on the lower surface of the cover 1a, the cam shaft 52, the spray position a of said fragrance liquid tank 40 _1, 40 ₂ cam 52a is provided so as to be positioned above the certain aroma tank 40 ₁ or 40 _2.

Then, it is rotated the cam shaft 52 by the motor 51, by the cam 52a pushes down the push button 44 of the aroma tank 40 ₁ or 40 ₂ located in the spray position A, in the manner described above, to the tank The stored fragrant liquid is sprayed into the ventilator duct 17 through the opening 17a from the spray hole 44a.

Here, in this embodiment, the time of spraying fragrance liquid, as shown in FIG. 6, the cam 52a is adapted to intermittently depressing the push button 44 of the aroma tank 40 ₁ or 40 _2, fragrant liquid The amount of scent liquid sprayed, that is, the amount of scent delivered to the passenger compartment, is controlled by setting the sprayed scent delivery time (ON time) and the non-sprayed scent delivery stop time (OFF time).

  On the other hand, the air conditioner according to this embodiment performs the scent delivery control to the passenger compartment by operating the scent delivery unit 30 together with the control of the air conditioning mode in the air conditioning unit 10 when the engine is idling stopped. It has become.

  As shown in FIG. 7, the scent delivery control is performed by the idling stop control unit 61 provided in the engine control unit 60 and the air conditioning control unit 70 in cooperation, and the idling stop control unit 61. Inputs a signal from the vehicle speed sensor 62 that detects the vehicle speed of the vehicle, a signal from the engine rotation sensor 63 that detects the engine speed and crank angle, a signal from the brake sensor 64 that detects the depression state of the brake pedal, and the like. For example, when a predetermined idling stop execution condition is satisfied, for example, when the brake pedal is depressed and the vehicle speed becomes zero, the engine 65 is stopped while detecting the crank angle, and the depression of the brake pedal is released. Engine 65 is restarted when the idling stop cancellation condition is satisfied It has become the jar.

  The air conditioning control unit 70 also detects a signal from the mode setting button 71 operated by the passenger, a signal from the inside / outside air switching button 72, a signal from the temperature setting button 73 in the air conditioning mode, and a temperature sensor that detects the temperature in the passenger compartment. A signal or the like from 74 is input to perform switching of the air conditioning mode including switching of the inside and outside air of the air conditioning unit 10, switching of the blowing mode, control of the temperature of the air conditioning air, and the like.

  And in this air-conditioning control unit 70, the scent control part 75 used as the center of scent delivery control and the memory | storage part 76 which memorize | stores the information required by this scent delivery control are provided, The signal from the idling stop control unit 61 of the engine control unit 70 and the signal from the temperature sensor 74 are input to control the air conditioning mode of the air conditioning unit 10 when the idling stop is executed, and the ventilator by the scent delivery unit 30 Control of spraying the scent liquid into the duct 17, that is, control of sending out the scent into the passenger compartment, and outputting an idling stop cancellation signal for restarting the engine 65 to the idling stop control unit 61 when a predetermined condition is satisfied. It is supposed to be.

  Next, a specific operation of the scent delivery control when the scent control unit 75 performs idling stop will be described.

  First, a first control example whose flowcharts are shown in FIGS. 8 and 9 will be described.

  In this first control example, first, in step S1, it is determined whether or not the air conditioning unit 10 is ON. If it is ON, in step S2, the air conditioning mode is either a cooling mode or a heating mode other than the air blowing mode. It is determined whether or not. If the air conditioning mode or the heating mode is selected, the air conditioning mode is stored in the storage unit 76 in step S3.

  Next, in step S4, based on the signal from the idling stop control unit 61 of the engine control unit 60, it is determined whether or not the idling stop of the engine 65 has been executed when the vehicle is stopped.

  If the idling stop is executed, next, in steps S5 and S6, the air-conditioning mode stored in the storage unit 76 is read out, and it is determined whether it is in the cooling mode or the heating mode. Performs the scent delivery control when cooling is stopped in steps S7 to S16.

  In the scent delivery control at the time of cooling stop, first, in step S7, the air conditioning mode of the air conditioning control unit 10 is switched from the cooling mode to the blowing mode of the inside air circulation to stop the cooling, and in step S8, the cool feeling to the passenger compartment. The delivery of the scent having an effect is started.

Specifically, FIG. 3, slide the sliding table 32 of the scent delivery unit 30 shown in FIG. 4, moves the cool feeling fragrance tank 40 ₁ to the spray position A, it operates the motor 51 of the fragrant liquid spraying mechanism 50 Te, intermittently depress the push button 44 of the tank 40 ₁ by the cam 52a, thereby spraying the fragrance liquid having a cool feeling effect in the ventilator duct 17.

  As a result, as indicated by the symbol a in FIG. 10A, when the idling stop is executed, the air conditioning mode is switched from the cooling mode to the internal air circulation air blowing mode in order to suppress power consumption of the battery. When the temperature in the passenger compartment increases due to the above, a scent having a cool feeling effect is sent out to the passenger compartment.

  Next, in step S9, the scent control unit 75 determines whether or not the idling stop has been canceled based on the signal from the idling stop control unit 61. In addition to increasing the delivery amount, in step S11, the air blowing amount of the air conditioning unit 10 is increased.

This increase in fragrance delivery amount is performed by increasing the ratio of OFF time ON time when depressing the push button 44 of the aroma tank 40 ₁ or 40 ₂ of the foregoing intermittently. Then, by repeatedly performing the control for increasing the scent delivery amount in step S10, the scent delivery amount gradually increases with the passage of time from the start of the scent delivery, as shown in FIG. 11 (a).

  Further, the increase in the blowing amount is performed by increasing the rotation speed of the blower fan 11 of the air conditioning unit 10, and the control for increasing the blowing amount in step S11 is repeatedly performed, as shown in FIG. From the start of air blowing, that is, switching to the air blowing mode, the air blowing amount gradually increases with the passage of time.

  As a result, even when the cooling is stopped with the idling stop of the engine and the temperature in the vehicle interior gradually rises, a scent having a cool sensation action is sent out to the vehicle interior so as to cancel the discomfort, The amount of air is gradually increased, and the amount of air blown is gradually increased to assist in sending out the scent, thereby suppressing or reducing discomfort given to the occupant due to an increase in the passenger compartment temperature.

  In that case, since the inside air is circulated in the air blowing mode, the rise in the cabin temperature itself due to the introduction of the high temperature outside air is also suppressed, and after cooling is stopped, coupled with the cool feeling effect due to the scent. In this case, the comfort in the passenger compartment is maintained.

Next, in step S12, the scent control unit 75 detects the vehicle interior temperature T based on the signal from the temperature sensor 74, and in step S13, the temperature T rises to the scent delivery end temperature TCE ₁ during cooling stop. Determine whether or not.

If the scent delivery end temperature TCE ₁ rises further, the scent having a cool feeling effect is sent out in the inside air circulation / air blowing mode, and the comfort may not be maintained even if the delivery amount and the air blowing amount are gradually increased. Until the vehicle interior temperature T rises to the scent delivery end temperature TCE ₁ , the control for delivering the scent having a cool feeling effect is continued under the air circulation mode of the inside air circulation.

10A, when the vehicle interior temperature T rises to the scent delivery end temperature TCE ₁ , the idling stop control unit 61 cancels the idling stop in step S14. In addition to outputting a signal, the air conditioning unit 10 is returned to the original cooling mode in step S15, and the scent delivery control is terminated in step S16.

As a result, when the vehicle interior temperature rises to the temperature TCE _{1, the} cooling is started again, and further temperature increase is avoided, the comfort in the vehicle interior is continuously maintained, and the engine is restarted (idling). By releasing the stop), excessive consumption of the battery power due to cooling with battery power is avoided.

Even when it is determined in step S9 that the idling stop has been canceled before the vehicle interior temperature T reaches the scent control end temperature TCE ₁ , the steps S15 and S16 are executed to return the air conditioning mode to the cooling mode. And the scent delivery control is terminated.

  On the other hand, when it is determined in step S6 that the air conditioning mode stored in the storage unit 76 is the heating mode, the scent delivery control during the heating stop in steps S17 to S26 of FIG. 9 is executed.

  The scent delivery control when the heating is stopped is performed in substantially the same manner as the control when the cooling is stopped, and the scent control unit 75 first changes the air conditioning mode of the air conditioning control unit 10 from the heating mode to the inside air circulation in step S17. While switching to the ventilation mode and stopping the heating, in step S18, the sending of a scent having a warming effect into the vehicle interior is started.

Delivery of fragrance with the warm feeling effect, FIG. 3, after moving the warm feeling fragrance tank 40 ₂ to the spray position A in scent delivery unit 30 shown in FIG. 4 is performed by actuating the motor 51 .

  As a result, as shown by the symbol c in FIG. 10B, when the idling stop is executed, the air-conditioning mode is switched from the heating mode to the air blowing mode, and the temperature in the passenger compartment decreases. The scent having a warm feeling action is sent out into the passenger compartment.

  Next, in step S19, the scent control unit 75 determines whether or not the idling stop has been canceled based on the signal from the idling stop control unit 61. In addition to increasing the delivery amount, in step S21, the air blowing amount of the air conditioning unit 10 is increased.

  The increase in the amount of fragrance delivered and the amount of blast is performed in the same manner as when cooling is stopped, as shown in FIGS. 11 (a) and 11 (b). As time passes, the amount of scent delivered and the amount of blast gradually increase.

  As a result, even when the engine stops idling and heating is stopped, and the temperature in the passenger compartment gradually decreases, a scent having a warming effect is sent out to the passenger compartment so as to counteract the discomfort. As the delivery amount is gradually increased and the blast amount is gradually increased to assist the delivery of the scent, discomfort given to the occupant due to the decrease in the passenger compartment temperature is suppressed or reduced.

  In that case, since the inside air circulation is performed in the air blowing mode as in the case of the cooling stop, a decrease in the cabin temperature due to the introduction of the low temperature outside air itself is also suppressed, and the warming effect due to the fragrance and In combination, the comfort in the passenger compartment is maintained even after heating is stopped.

Next, in step S23, the scent control unit 75 detects the vehicle interior temperature T based on the signal from the temperature sensor 74, and in step S13, the temperature T decreases to the scent delivery end temperature TWE ₁ when heating is stopped. Determine whether or not.

When the scent delivery end temperature TWE ₁ further decreases, the scent having a warming effect is sent out in the inside-air circulation / air blowing mode, and the comfort is not maintained even if the delivery amount and the air blowing amount are gradually increased. Until the vehicle interior temperature T is lowered to the scent delivery end temperature TWE ₁ , the control for sending out the scent having a warming sensation is continued under the air circulation mode. To do.

10B, when the vehicle interior temperature T has decreased to the scent delivery end temperature TWE ₁ , the idling stop control unit 61 cancels the idling stop when the scent delivery end temperature TWE ₁ is reached. In addition to outputting a signal, the air conditioning unit 10 is returned to the original heating mode in step S25, and the scent delivery control is terminated in step S26.

Thereby, when the vehicle interior temperature rises to the temperature TWE _1, heating is started again, a further temperature drop is avoided, the comfort in the vehicle interior is maintained, and the engine is restarted (idling). By releasing the stop), excessive consumption of the battery power due to heating with battery power is avoided.

Even when it is determined in step S19 that the idling stop has been canceled before the vehicle interior temperature T reaches the scent control end temperature TWE ₁ , the steps S25 and S26 are executed to return the air conditioning mode to the cooling mode. And the scent delivery control is terminated.

  Next, a second control example whose flowcharts are shown in FIGS. 12 and 13 will be described.

  Steps S31 to S36 in the second control example are the same as steps S1 to S6 in the first control example. Further, when the air conditioning mode before the idling stop execution is the cooling mode, the scent delivery control during the cooling stop is executed in steps S37 to S48, and when the heating mode is set, the scent delivery control during the heating stop is executed in steps S49 to S60. Is also the same as in the first control example.

  In the scent control during cooling stop, first, in step S37, the air-conditioning mode is switched to the internal air circulation air blowing mode. In this control example, the scent delivery is not started at this time, and the idling stop control unit is started in step S38. Based on the signal from 61, it is determined whether or not the idling stop is released. If not, the vehicle interior temperature T is detected in step S39.

Then, in step S40, the vehicle interior temperature T is determined whether increased to fragrance delivery starting temperature TCS ₂ in cooling down, if raised to the temperature TCS _2, further at step S41, until the temperature TCS ₂ It is determined whether or not it is immediately after rising, and immediately after that, in step S42, the sending of a scent having a cool feeling action into the vehicle interior is started.

As a result, as shown by the symbol e in FIG. 14 (a), idling stop is executed, and the air conditioning mode is switched from the cooling mode to the air blowing mode in order to suppress the power consumption of the battery. If the vehicle interior temperature T rises to the temperature TCS ₂ when the vehicle interior temperature rises, a scent having a cool feeling effect is sent out to the vehicle interior.

Next, the fragrance control unit 75 immediately after the vehicle interior temperature T is raised up to the temperature TCS ₂ after having executed the step S42, if not immediately after without executing the step S42, executes the steps S43, S44 Then, the amount of scent delivered is gradually increased, and the amount of air blown from the air conditioning unit 10 is gradually increased in step S44.

  The increase in the scent delivery amount and the increase in the blast amount are performed in the same manner as in the first control example described above, and as shown in FIGS. 11A and 11B, the scent delivery amount with the passage of time from the start of the scent delivery. Gradually increases, and the amount of air flow gradually increases with the passage of time from the time of switching to the air blowing mode.

  Thus, as in the case of the first control example, the cooling is stopped with the idling stop of the engine, the vehicle interior temperature rises to the predetermined temperature TCS2, and when the situation further rises, the discomfort is reduced. As the scent having a cool feeling action is sent out to the vehicle interior so as to cancel, the delivery amount is gradually increased, and the blast is gradually increased to assist the delivery of the scent. Discomfort will be suppressed or reduced.

Next, in step S45, the scent control unit 75 determines whether or not the passenger compartment temperature T has further increased to the scent delivery end temperature TCE ₂ during the cooling stop higher than the temperature TCS ₂ , 14A, when the temperature rises to the temperature TCE ₂ , the idling stop is canceled in step S46, and the air conditioning unit 10 is returned to the original cooling mode in step S47. In step S48, the scent delivery control is terminated.

Further, in the step S40 or step 45, before or when the temperature T before the vehicle compartment temperature T reaches the fragrance delivery starting temperature TCS ₂ reaches the fragrance delivery end temperature TCE _2, in step S38, the idle stop is released When it is determined that the air conditioning unit 10 is returned to the original cooling mode in steps S47 and S48, the scent delivery control is terminated.

On the other hand, the scent delivery control during the heating stop is performed in substantially the same manner as the control during the cooling stop. In step S49, the air-conditioning mode is switched to the blow-in mode of the inside air circulation. It is determined whether or not the scent delivery start temperature TWS _{2 is} stopped, and if it is decreased to the temperature TWS ₂ , it is further determined in step S53 whether or not it is immediately decreased to the temperature TWS _2. If there is, in step S54, the sending of a scent having a warming effect into the passenger compartment is started.

As a result, as indicated by reference numeral g in FIG. 14B, idling stop is executed, and the air conditioning mode is switched from the heating mode to the air blowing mode in order to suppress the power consumption of the battery. When the vehicle interior temperature T decreases to the temperature TWS ₂ , a scent having a warming sensation is delivered into the vehicle interior.

Next, the scent control unit 75 executes step S54 immediately after the passenger compartment temperature T decreases to the temperature TWS ₂ , and if not immediately, executes step S55, S56 without executing step S54. Then, while gradually increasing the amount of scent delivered, the amount of air blown by the air conditioning unit 10 is gradually increased.

  The increase in the scent delivery amount and the increase in the blast amount during the heating stop are also performed in the same manner as in the first control example, and as shown in FIGS. 11 (a) and 11 (b), with the passage of time from the start of the scent delivery. The scent delivery amount gradually increases, and the blast amount gradually increases with the passage of time from the time of switching to the blast mode.

As a result, when the engine stops idling and heating is stopped, the vehicle interior temperature decreases to a predetermined temperature TWS _{2, and} when the temperature further decreases, it has a warming effect so as to cancel the discomfort. As the scent is sent into the passenger compartment, the delivery amount is gradually increased, and the amount of air blown is also increased to assist the delivery of the scent. Will be suppressed or reduced.

Next, the fragrance control unit 75, at step S57, the said vehicle interior temperature T is further reduced, it is determined whether or not lowered to the temperature TWS ₂ colder heating aroma stopped transmission end temperature TWE _2, When the temperature has dropped to TWE ₂ , a signal is output to the idling stop control unit 61 to cancel the idling stop in step S58, and the air conditioning unit 10 is returned to the original heating mode in steps S59 and S60. Then, the scent delivery control is terminated.

In step S52 or 57, the idling stop is canceled in step S50 before the vehicle interior temperature T reaches the scent delivery start temperature TWS ₂ or before the temperature T reaches the scent delivery end temperature TWE _2. When it is determined that, the air conditioning unit 10 is returned to the original heating mode in steps S59 and S60, and the scent delivery control is terminated.

As described above, in the second control example, the scent delivery control at the time of idling stop is performed when the vehicle interior temperature T rises to the predetermined start temperature TCS ₂ at the time of cooling stop, and the temperature T is set at the predetermined time at the time of heating stop. The process starts when the temperature drops to the start temperature TWS ₂ . Therefore, even when the cooling or heating is stopped, when it is considered that there is a certain period of time before the occupant begins to feel uncomfortable, the sending of useless fragrance during that time is avoided.

  Also in this second control example, since the inside air is circulated in the air blowing mode, the temperature inside the passenger compartment rises due to the introduction of high temperature outside air while cooling is stopped, or the low temperature outside air is introduced while heating is stopped. Thus, a decrease in the passenger compartment temperature is suppressed, and the comfort in the passenger compartment is maintained even after cooling or heating is stopped, coupled with the cool feeling effect or warm feeling effect due to the scent.

  In the above first and second control examples, the start time and end time of the scent delivery control are controlled based on the temperature in the passenger compartment, but instead, as in the following third and fourth control examples. The start time and end time of the scent delivery control may be controlled based on the amount of change in temperature from when the air conditioning mode is switched from the cooling mode or the heating mode to the air blowing mode. The main part of the fourth control example will be described. In the description of these control examples, the same steps as those in the corresponding first and second control examples will be described using the same reference numerals.

First, in the third control example corresponding to the first control example, as shown in FIG. 15A, at the time of switching from the cooling mode to the blowing mode of the inside air circulation in step S7, the vehicle at that time is changed in step S7 ′. by detecting the room temperature and stored as an initial value TC in the storing unit 76, then, in step S13 ', when the vehicle interior temperature rise temperature (T-TC) is determined to have reached the predetermined value TCE _3, The idling stop cancellation control in step S14 and the return control to the cooling mode in step S15 are performed.

Further, as shown in FIG. 15B, when switching from the heating mode to the ventilation mode of the inside air circulation in step S17, the temperature in the vehicle compartment at that time is detected and stored as an initial value TW in step S17 ′. stored in, then, in step S23 ', when the reduction temperature in the passenger compartment temperature (TW-T) is determined to have reached the predetermined value TWE _3, and the idling-stop cancellation control in step S24, the heating of step S25 Controls return to mode.

On the other hand, in the fourth control example corresponding to the second control example, as shown in FIG. 16A, at the time of switching from the cooling mode to the blowing mode of the inside air circulation in step S37, in step S37 ′, car detects the room temperature and stored as an initial value TC, then, at step S40 ', when the temperature rise of the vehicle interior temperature (T-TC) is determined to have reached the predetermined value TCS _4, in step S42 The sending of the scent having a cool feeling effect is started, and in steps S43 and S44, the increase control of the scent delivery amount and the increase control of the blowing amount are performed.

When the vehicle interior temperature further rises and it is determined in step S45 ′ that the temperature rise (T-TC) has reached a predetermined value TCE ₄ greater than the predetermined value TCS ₄ , the idling stop in step S46 is performed. Release control and return control to the cooling mode in step S47 are performed.

Further, as shown in FIG. 16B, when switching from the heating mode to the blower mode of the inside air circulation in step S49, in step S49 ′, the vehicle interior temperature at that time is detected and the storage unit 76 is used as the initial value TW. stored in, then, in step S52 ', when the reduction temperature in the passenger compartment temperature (TW-T) is determined to have reached the predetermined value TWS _4, the transmission control of the scent with warm feeling effect in step S54 In steps S55 and S56, increase control of the scent delivery amount and increase control of the blowing amount are performed.

When it is determined that the temperature in the passenger compartment further decreases and the temperature drop (TW-T) has reached a predetermined value TWE ₄ greater than the predetermined value TWS ₄ , the idling stop cancellation control in step S58, The return control to the heating mode in S59 is performed.

  In the third and fourth control examples, the passenger feels uncomfortable when the temperature rises or decreases after the cooling or heating stops rather than the vehicle interior temperature at that time. It is valid.

  In the above control example, after the scent delivery is started, the delivery amount is gradually increased with the passage of time. Alternatively, the scent may be changed with the passage of time.

That is, as shown in FIG. 17, in addition to the cool scent liquid tank 40 ₁ and the warm scent liquid tank 40 ₂ , a high concentration scent that stores a higher concentration of cool scent liquid than these liquids is stored in the scent delivery unit 30 ′. a liquid tank 40 _3, keep a high concentration warm feeling fragrance liquid tank 40 ₄ which stores the high concentration of the warm feeling fragrance liquid, after starting transmission of the fragrance, when a predetermined time has elapsed, or, fragrance start of delivery after, the vehicle interior temperature increases or decreases to a predetermined temperature, or when the temperature increase or decrease the temperature has reached a predetermined value, aroma from the high concentration coolness aroma tank 40 ₃ or warm feeling fragrance tank 40 ₄ By spraying the liquid, the strength of the scent to be delivered is increased with time.

  In that case, instead of switching the concentration of the scented liquid, it may be switched to a scented liquid having a strong scented component. Moreover, you may use together change control of these fragrance liquids, and the above-mentioned increase control of fragrance delivery amount.

  Further, in the above control example, after the scent delivery control is started, the air flow rate is gradually increased, but conversely, the air flow rate is decreased and the cooling state or the heating state before switching to the air blowing mode. Further, when sending a scent having a cool feeling effect, the cool feeling is further promoted by increasing the air flow rate, and when the scent having a warm feeling effect is sent, the warm feeling felt by the passenger is impaired. You may make it reduce air flow so that there may not be. In addition, this may be omitted when an increase or decrease in the air flow rate is unnecessary.

  In addition, the fragrance composition which mix | blended essential oil as shown in FIG. 18, for example as an active ingredient can be used as the fragrance which has the cool feeling effect | action used in this invention, and the fragrance which has a warm feeling effect | action.

  As described above, according to the present invention, the comfort in the passenger compartment is maintained even when the cooling or heating is stopped when the engine is idling stopped. Therefore, it may be preferably used in the field of manufacturing industries of vehicles having an engine idling stop function.

10 Air-conditioning unit 30 Scent delivery unit (scent delivery means)
61 Idling stop control unit (idling stop control means)
70 Air conditioning control unit (air conditioning control means)
75 Scent control unit (scent control means)

Claims (4)

A vehicle air conditioner provided with idling stop means for temporarily stopping the engine when the vehicle is in a stopped state,
An air conditioning control means for switching the air conditioning mode to an internal air circulation blow mode when the engine is stopped by the idling stop means in a cooling mode or a heating mode state;
Scent delivery means for delivering scent into the passenger compartment;
A scent control means for causing the scent delivery means to send a scent into the vehicle interior during a predetermined period when the engine is stopped by the idling stop means, and increasing the delivery amount and / or changing the scent as time elapses. A vehicle air conditioner comprising idling stop means.   2. The vehicle air conditioner having an idling stop unit according to claim 1, wherein the air conditioning control unit changes the air flow rate as time passes after the air conditioning mode is switched to the air blowing mode.   The said air-conditioning control means is equipped with the idling stop means of Claim 2 which controls a ventilation volume by repeating the ventilation state and a ventilation stop state in ventilation mode, and adjusting the execution time of each state. Vehicle air conditioner. The scent delivery means is capable of delivering a scent having a cool feeling action and a scent having a warm feeling action,
The scent control means sends out a scent having a cool feeling when the air conditioning mode is switched from the cooling mode to the air blowing mode, and a scent having a warm feeling when the air conditioning mode is switched from the heating mode to the air blowing mode. The vehicle air conditioner provided with the idling stop means according to any one of claims 1 to 3, wherein the air conditioner is sent out.

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