JPH02220915A - Air conditioning device for vehicle - Google Patents

Abstract

PURPOSE:To prevent foul smell from being produced by introducing fresh air from the outside, whereby the air in the conditioning device is exhausted out of it for a specified time, in the above conditioning device supplying aromatic component containing conditioned-air. CONSTITUTION:Each unit of an air conditioning device is driven and controlled by a control means 6 according to a specified program, and conditioned-air containing aroma of aromatic agent 47 and 48 is released into the cabin of a vehicle. When an air conditioning device switch is turned off, the actual time Tf of rotation of a fan is counted by the control means 6 and doors 49a and 49b are closed to stop the supply of the aromatic agent. An intake door 12 is switched over to the fresh air introduction side; an exhausting switch-over door 51 is switched over to the outside-exhausting side. The fan 13 is continued to rotate until the actual time Tf of rotation of the fan 13 is reached to a specified time, for example, to two minutes. After the specified time is passed, the fan 13 is stopped. With this constitution, aroma is emitted and the water sticked onto a cooling unit 2 is evaporated to prevent foul-smell from being produced.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a vehicle air conditioner.

Among conventional vehicle air conditioners, for example, Japanese Patent Application Laid-Open No. 58-30
As shown in JP-A No. 3824, JP-A-58-36719, JP-A-58-81817, etc., it contains aromatic components that match the tastes of passengers such as citrus, lavender, jasmine, rose, and mint. A device that supplies conditioned air is known.

Problems to be Solved by the Invention Fragrance agents include components that have a high boiling point and are easily volatile, and components that have a low boiling point and are difficult to volatilize (1) components that are easily adsorbed to synthetic resins.

Components that are difficult to adsorb to synthetic resins and components that are easily soluble in water.

It is composed of ingredients that are difficult to dissolve in water. Therefore, when the supply of conditioned air containing aromatic components is stopped, the aromatic components remain in the air conditioner other than the aroma supply unit, and this remaining aromatic component, or residual fragrance, is transferred to the synthetic resin components of the air conditioner. .

The fins of the cooling unit, the water generated by the cooling unit's dehumidifying action, the fins of the heater unit, etc., are odourized, and an unbalanced odor consisting of the residual fragrance can be released into the vehicle interior from the air outlet. There is sex. Furthermore, when replacing a fragrance with one that has a different aromatic component system, the fragrance components before and after the exchange may mix, resulting in a bad odor depending on the condition of the fragrance components after the exchange.

Means for Solving the Problems In a vehicle air conditioner that supplies conditioned air containing aromatic components, control is provided to release the air inside the air conditioner to the outside of the air conditioner for a predetermined period of time after stopping the supply of the conditioned air. The means are provided.

After the supply of conditioned air containing active aroma components is stopped, residual fragrance is released outside the air conditioner, and water produced by the dehumidifying action of the cooling unit is evaporated.

Embodiment 1 First Embodiment As shown in FIGS. 1 to 3, the vehicle air conditioner of the first embodiment generally includes a proa unit 1, a cooling unit 2, a heater unit 3, and an aroma supply unit 4.
, a duct unit 5 , and a control means 6 .

The pro unit 1 is provided with an outside air inlet IO, an inside air inlet 11, an intake door 12, and a pro fan 13. The outside air inlet 10 introduces outside air in response to the wind pressure of the vehicle. Inside air intake port 1In the summer, air from the passenger compartment is introduced. intake door 1
2 selectively opens and closes the outside air inlet 10 and the inside air inlet 11.

The cooling unit 2 is provided with an evaporator 20.

The heater unit 3 is provided with a heater core 30 and an air mix door 31.

The aroma supply unit 4 is connected to the cold air passage 32 of the heater unit 3.
and the air mix chamber 33. Specifically, the casing 40 of the aroma supply unit 4 is provided with an inlet 4I and an outlet 42. The inlet 41 connects to the cold air passage 32 of the heater unit 3 via the upstream passage 41a.
It is connected to the. The outlet 42 is connected to the air mix chamber 33 of the heater unit 3 via a downstream passage 42a. Inside the casing 40 is an air freshener storage chamber 43.
44 and opening/closing mechanisms 45 and 46 are provided. Air fresheners 47 and 48 are exchangeably stored in each of the fragrance storage chambers 43 and 44. Each of the fragrance storage chambers 43 and 44 has a through hole 43a.

44a is provided. The opening/closing mechanism 45.46 individually controls the supply of aromatic components volatilized from each of the aromatic agents 47.48, and the lids 45a, 46a actuate solenoids 45b, 46b and return springs 4.5c, 46c. It is an electromagnetic drive self-returning type that is driven by the following to open and close the through holes 43a and 44a.

Doors 49A and 49B are provided at the entrance of the upstream passage 41a and the exit of the downstream passage 42a, respectively.

The duct unit 5 includes an outside outlet 50, an outlet switching door 51, an outlet 52.53, and an outlet door 54.5.
5 is provided. The outlet port 50 outside the vehicle is adapted to lead out the conditioned air to the outside of the vehicle. Output switching door 51
is configured to selectively open and close the vehicle exterior outlet 50 and the intermediate portion of the duct body 56. The air outlets 52 and 53 are adapted to lead out conditioned air into the vehicle interior. The air outlet doors 54, 55 are adapted to open and close each of the air outlets 52, 53 individually.

The control means 6 controls the intake door 12, the pro fan 13, the cooling unit 20, the heater core 30, and the air mix door 31 according to a program preset in the control means 6 by turning on a main switch (not shown) of the air conditioner. and opening/closing mechanism 45.46 and door 49
A, 49B, lead-out switching door 51, and blowout door 54
．． 55 is selectively driven and controlled. Also, this control means 6
has a function of comparing the actual fan rotation time Tf and the set fan rotation time TO.

According to the structure of the first embodiment described above, the fragrances 47 and 48 are stored in the fragrance storage chambers 43 and 44, and the opening/closing mechanism 45.
46 is in the closing operation, the through holes 43a, 44a
are closed with lids 45a and 46a, so the air freshener 4
7.48 The aromatic components volatilized from the air freshener storage room 43.4
It is filled with 4. When the air conditioning switch is turned on, the control means 9 drives and controls the air conditioner according to a preset program. This will be explained with reference to the flowchart shown in FIG.

First, in step St, it is determined whether the air conditioning switch is turned on. If the air conditioning switch is turned on, the doors 49A, 49B and the opening/closing mechanism 45, 46 are opened in step S2, and the extraction switching door 51 is opened.
is driven to the outside outlet closing position (the position shown by the solid line in Fig. 1) to start supplying fragrance, while responding to the inside/outside air switching setting command and the mode setting command in which the air conditioner is not shown in step S3. outside air introduction mode, inside air circulation mode,
Air conditioning mode control such as cooler mode, heater mode, pie level mode, foot mode, etc. is performed, and the proa fan 13 is rotated in step S4. Then, the air outside the air conditioner passes through the proa unit 1, the cooling unit 2, the heater unit 3, and the duct unit 5, becomes conditioned air, and is blown into the vehicle interior from the outlet 52 or 53. In this air blowing process, the cold air passage 32 of the heater unit 3 is
A portion of the cold air passing through the air is discharged from the upstream passage 41a, through the casing 40 of the aroma supply unit 4, and into the air mix chamber 33 via the downstream passage 42a. At this time, the aromatic components volatilized from the aromatic agent 47.48 into the aromatic agent storage chamber 43.44 are transferred to the through hole 43a by the air flow flowing around the lid body 45a, 46a which is being opened. Alternatively, it is introduced into the casing 40 from the aromatic agent storage chamber 43 or the aromatic agent storage chamber 44 through the through hole 44a, and is sufficiently mixed with air to become air containing aromatic components, and is then introduced into the outlet port 4.
2 from the downstream passage 42a to the air mix chamber 33
is released into the heater core 3 in the air mix chamber 33.
The heated air is mixed with the warm air that has passed through the air, becomes aroma-containing conditioned air, and is blown into the vehicle interior from the air outlet 52 or the air outlet 53.

Next, in step S5, it is determined whether the air conditioning switch is turned off. When the air conditioning switch is turned off, in step S6, a counter (not shown) in the control means 9 counts the actual fan rotation time Tf (time elapsed since the air conditioning switch was turned off in step S5). 49A.

49B and the opening/closing mechanisms 45 and 46 are closed to stop the aroma supply, the intake door 12 is driven to the outside air introduction position (the position indicated by the imaginary line in FIG. 1) in step S8, and the outlet switching door 5I is moved in step S9. The fan is driven to the vehicle exterior outlet open position (the position indicated by the imaginary line in FIG. 1), and in step SIO, the actual fan rotation time Tf is set to the set fan rotation time, for example, 2, by a timer (not shown) in the control means 9. Determine whether the minute has elapsed. When the actual fan rotation time Tf passes the set fan rotation time Ts, the rotation of the pro fan 13 is stopped in step S11. That is, after the normal supply of conditioned air in the air conditioner is stopped, steps S6 to
The SLL releases the aromatic components remaining in the air conditioner, that is, the residual fragrance, to the outside of the air conditioner together with the air,
This airflow evaporates water produced by the dehumidifying action of the cooling unit 2.

Here, regarding the degree of fragrance in the air conditioner and the odor intensity of residual fragrance, after supplying conditioned air containing aromatic components for 30 minutes three times a day for 30 days, divided into the following cases As a result of the measurement, the results shown in FIG. 4 were obtained.

■Proafan 13 was stopped at the same time as the supply of conditioned air containing aromatic components was stopped (the air conditioning switch was turned off). At this time, the intake door 12 was driven to the inside air circulation position (the position indicated by the solid line in FIG. 1) (inside air circulation mode).

■After stopping the supply of conditioned air containing aromatic components, open the intake door! The proafan 13 was rotated for 2 minutes at the inside air circulation position, and the air was discharged into the vehicle interior from the air outlet 52, 53.

(2) After the supply of conditioned air containing aroma components was stopped, the intake door 12 was placed in the outside air introduction position (outside air introduction mode), the proa fan 13 was rotated for 2 minutes, and the air was discharged into the vehicle interior through the air outlet 52 and 53.

After stopping the supply of conditioned air containing aromatic components, the intake door 12 was placed in the outside air introducing position, the proa fan 13 was rotated for 2 minutes, the outlet switching door 51 was driven to the duct closing position, and the outside air outlet 50 discharged the air outside the vehicle. .

Considering these measurement results, in the case of type (2), which corresponds to a conventional air conditioner, the odor intensity was 2.5 after 15 days, and deterioration of the aroma was observed, and after 30 days, the human olfactory It shows an odor intensity of 3 with a clear aroma, and its characteristics show an increase. On the other hand, in the case of ■, ■, and ■ corresponding to the air conditioner of the present invention, after 15 days, ■ indicates an odor intensity of 2, which is perceived as weak by the human sense of smell; The odor intensity was such that the fragrance was barely perceptible to the sense of smell, and no deterioration of the fragrance was observed.
After 30 days, the odor intensity was the same as after 15 days, and no deterioration of the aroma was observed. In particular, the odor intensity l of the residual fragrance in ■ and ■ is 47.
Even if 48 is replaced with an air freshener with a different fragrance component and the fragrance components before and after the exchange mix, the scent after the exchange will overcome the fragrance before the exchange, and the human sense of smell will perceive it as the fragrance after the exchange. Met.

In addition, in this first embodiment, since the opening/closing mechanisms 45 and 46 of the aroma supply unit 4 are provided, in particular, the door 49A is
, 49B can be omitted.

Further, fragrances 47 and 48 having different fragrance components are stored separately in the fragrance storage chambers 43 and 44, and these different fragrance components can be released simultaneously to supply a mixed fragrance, or they can be released individually. You can also. Also, there may be only one fragrance storage chamber 43, 44 (in this case, there will be one opening/closing mechanism 45, 46).

Second example As shown in FIG. 5, the door 49A from the first embodiment.

49B, the vehicle exterior outlet 50, and the outlet switching door 51 are omitted, and when the supply of conditioned air containing aromatic components is stopped, the intake door 12 is driven to the outside air introduction position, and both or one of the outlet doors 53 and 54 are shown in solid lines. The system is characterized in that it opens as shown in the figure, and rotates for the required time after the Proafan 13 stops supplying conditioned air containing aromatic components to release the residual fragrance inside the air conditioner into the passenger compartment. The basic structure is the same as the first embodiment.

According to the structure of the second embodiment, it can be implemented mechanically by simply assembling the aroma supply unit 4 to an existing vehicle air conditioner, so that costs can be reduced compared to the first embodiment.

Third embodiment As shown in FIG. 6, the door 49A from the first embodiment.

49B, the vehicle exterior outlet 50, and the outlet switching door 51 are omitted, and the aroma supply unit 4 is attached to the unit body between the intake door 12 of the pro-ar unit 1 and the pro-ap fan 13, and other basic features The structure is the same as the second embodiment.

According to the structure of the third embodiment, since the air blown from the professional unit 1 to the cooling unit 2 contains aromatic components, the mixing path of the aromatic components and air becomes long, and the mixing process between the aromatic components and the air becomes longer. Mixing is more thorough.

Note that the present invention is not limited to the above embodiments,
Although not shown, the following structures (1) to (2) can also be applied.

■At the same time as the supply of conditioned air containing aromatic components is stopped, the rotation of the Proa fan 13 also stops, and the intake door I
2 is driven to the outside air introduction position, outside air is taken into the air conditioner from the outside air introduction port 11 by the running wind pressure, and residual fragrance is discharged to the outside of the air conditioner together with this taken in air.

(2) After the supply of conditioned air containing aroma components is stopped, the proafan 13 is reversed to release the residual fragrance to the outside of the air conditioner. In this case, the intake door is closed while the vehicle is running! 2 may be driven to the inside air circulation position, and the intake door 12 may be driven to the outside air introduction position while the vehicle is stopped.

(2) The outside outlet 50 of the air conditioner is communicated with an exhaust port provided in the negative pressure area of the vehicle body through a bypass path.

■The residual fragrance emitted from the air conditioner into the vehicle interior is discharged outside the vehicle through an exhaust port installed in the negative pressure area of the vehicle body, leaving the interior to natural ventilation.

■During the period from the ON operation to the OFF operation of the air conditioning switch, the opening/closing mechanism 45, 46 of the aroma supply unit 4 is opened for the required aroma supply time, for example, 3 minutes, and then closed for the required aroma supply stop time, for example, 10 minutes. As in,
Supply and stop of fragrance are repeated alternately. This can prevent the passenger's sense of smell from becoming paralyzed due to continuous sniffing of the fragrance.

■During the aroma supply operation when the opening/closing mechanism 45, 46 is open, the actual aroma concentration Pa is read, and the actual aroma concentration Pa and the set aroma concentration PO are read out from the memory (not shown) in the control means 9 and compared. Then, the actual aroma concentration Pa is the set aroma concentration P
The opening/closing mechanisms 45, 46 are controlled to open/close in accordance with the aroma concentration, such that the opening/closing mechanisms 45, 46 are closed when the fragrance concentration is greater than or equal to o.

■Indirect heating type heaters are installed in the fragrance storage chambers 43 and 44, and the actual fragrance concentration Pa is too low than the set fragrance concentration Po (for example, the odor intensity is 2 or less, which is perceived as a weak fragrance by the human sense of smell). In this case, the aroma concentration is controlled by heating the aroma agent 47, 48 with a heater to increase the amount of aroma component volatilization.

■Add the mode setting command for the air conditioner to the control conditions (parameters) in ■ above.

■ Plural air freshener storage chambers 4 as shown in the first to third embodiments
3. By adding a deodorizing agent or a deodorizing agent to one of the 44 parts, it can have a deodorizing function or a deodorizing function in addition to supplying an aroma.

Effects of the Invention As described above, according to the present invention, after the supply of conditioned air containing aromatic components is stopped, residual fragrance can be released to the outside of the air conditioner, and water generated by the dehumidifying action of the cooling unit can be evaporated. The synthetic resin components of the air conditioner can leave a lingering scent.

This eliminates the inconvenience of the fins of the cooling unit, the water generated by the dehumidifying action of the cooling unit, the fins of the heater unit, etc., and the inconvenience of unbalanced odors being emitted into the vehicle interior from the air outlet. can be resolved. In addition, even when replacing a fragrance with one that has a different aromatic component, the remaining fragrance of the exchangeable component and the replacement aromatic component may mix, and depending on the condition of the replacement aromatic component, the inconvenience of causing a bad odor can be resolved. There are advantages.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing a first embodiment of the present invention, Fig. 2 is a sectional view showing a fragrance supply unit of the first embodiment, Fig. 3 is a flowchart of the first embodiment, and Fig. 4 is a FIG. 5 is a configuration diagram showing the second embodiment of the present invention with the control means omitted, and FIG. 6 is a diagram showing the measurement results of the first embodiment of the present invention.
FIG. 2 is a configuration diagram showing an embodiment with a control means omitted. ■... Proa unit, 2... Cooling unit, 3... Heater unit, 4... Fragrance supply unit, 5... Duct unit, 6... Control means, 12...
...Intake door, 13...Proa fan, 43.
44...Fragrance, 45.46...Opening/closing mechanism, 50.
... External outlet, 51... Outlet switching door, 52.
53... Air outlet, 53.54... Air outlet door. Figure 2: 3 people outside the group Figure 3: Figure 3

Claims (1)

[Claims] (1) In a vehicle air conditioner that supplies conditioned air containing aromatic components, after stopping the supply of the conditioned air,
1. An air conditioner for a vehicle, comprising a control means for discharging air within the air conditioner to the outside of the air conditioner for a predetermined period of time.