KR20140105262A - Air conditioning system for automotive vehicles - Google Patents

Abstract

The present invention relates to an air conditioning system for a vehicle. The objective of the present invention is to accurately predict when smell occurs in an evaporator and to manually control the sensitivity of prediction when smell occurs according to preferences and tastes of a user. To achieve the above-mentioned objective, the air conditioning system includes the evaporator installed inside the passage of an air conditioning case. The evaporator is operated when an air conditioner is on and the air conditioning system for a vehicle cools the air blowing inside the vehicle. The air conditioning system for a vehicle comprises first and second temperature sensing units installed in an air passage in the downstream of the evaporator; a control unit for predicting when smell occurs in the evaporator by comparing the difference of the temperatures of two points of the downstream of the evaporator, which are input from the first and second temperature sensing units when the air conditioner is off, with a predetermined reference temperature difference; and a unit for changing a reference temperature difference. The unit for changing a reference temperature difference can change the reference temperature difference of the control unit, which is a reference used to predict when smell occurs.

Description

TECHNICAL FIELD [0001] The present invention relates to an air conditioning system for an automobile,

More particularly, the present invention relates to a vehicle air conditioner capable of accurately predicting an odor generation time in an evaporator and manually adjusting a prediction sensitivity of an odor generation time according to a user's taste and preference .

In most vehicles, when the air conditioner is activated, a mold odor and odor are generated. This is because the surface of the evaporator is inhabited by bacteria and fungi, which are the cause of odor generation.

Recently, various methods for removing odor from an evaporator have been proposed. As an example, there is a technology for discharging negative and positive ions to the surface of an evaporator to sterilize and remove bacteria and fungi on the surface of the evaporator.

On the other hand, in order to effectively remove the odor from the evaporator, it is important to accurately predict the "odor occurrence time" in the evaporator. Thus, the sterilization and deodorization efficiency of the evaporator can be improved in accordance with the "odor generation timing", and the generation of mold odor and odor in the evaporator can be suppressed as much as possible.

As a method for predicting the "odor generation period" of the evaporator, there is a method using a humidity sensor.

This method utilizes the property of increasing mold odor and odor when the surface humidity of the evaporator is raised. After the humidity sensor detects the surface humidity of the evaporator, the detected humidity of the evaporator is set to a predetermined "reference value & Or more, and as a result of the determination, it is predicted that the odor in the evaporator is increased when the temperature is equal to or greater than the "reference value ".

However, this conventional technique has a disadvantage in that the prediction accuracy of the "odor occurrence timing" is lowered because it is a structure that predicts the occurrence of mold odor and odor only with the local surface humidity data of the evaporator.

The disadvantage is that the efficiency of disinfection and deodorization of the evaporator is low due to such disadvantages, and it is pointed out that such problems can not effectively cope with the generation of mold odor and odor in the evaporator.

In addition, the conventional "odor generation timing" prediction technique is very sensitive to "odor" because it is a structure that predicts "odor occurrence timing" based on a predetermined specific "reference value" It has a disadvantage that it is very inadequate for a passenger who senses the generation of odor.

Due to these disadvantages, there is a problem that it is not possible to respond to individual "odor detection ability" and "odor sensitivity" of individual passengers.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle air conditioner capable of accurately predicting a "smell occurrence time" in an evaporator.

It is another object of the present invention to provide an evaporator which is capable of accurately predicting the "odor generation period" in the evaporator, thereby increasing the sterilization and deodorization efficiency of the evaporator in accordance with the "odor generation period & Which can effectively cope with the occurrence of the abnormality of the vehicle.

It is still another object of the present invention to provide a vehicle air conditioner that allows the user to manually control the prediction criteria of "odor occurrence time ".

It is another object of the present invention to provide a vehicle air conditioner capable of arbitrarily adjusting the predictive sensitivity of the "odor occurrence time" according to the user's taste and preference, Device.

It is a further object of the present invention to provide a system and method for controlling the sensitivity of the "odor generation time" to the user's preference and preference, thereby positively responding to the "odor detection capability" and "odor sensitivity" And an air conditioner for a vehicle.

In order to achieve the above object, a vehicle air conditioner according to the present invention includes an evaporator installed in an internal passage of an air conditioning case, and the evaporator is operated when the air conditioner is turned on, A first and a second temperature sensing means disposed at a distance on a downstream air passage of the evaporator so as to sense air temperatures at two downstream sides of the evaporator; Wherein when the air conditioner is turned off, the temperature difference between two downstream points of the evaporator, which are input from the first and second temperature sensing means, is compared with a preset reference temperature difference, A control unit for predicting a time; And a reference temperature deviation changing unit capable of changing a reference temperature deviation of the control unit, which is a reference for predicting an odor generation timing.

Preferably, the reference temperature deviation changing unit includes a reference temperature deviation changing mode setting unit that can be set to a mode capable of changing the reference temperature deviation, and a reference temperature deviation changing unit that can actually change the reference temperature deviation The reference temperature deviation changing mode setting unit may be configured such that the reference temperature deviation changing mode setting unit sets the reference temperature deviation changing mode based on the reference temperature deviation when the reference temperature deviation is changed by the reference temperature deviation changing unit, And the smell occurrence time is predicted.

According to the air conditioning system for a vehicle according to the present invention, since the structure detects the "odor generation time" in the evaporator after detecting the temperature deviation of the air on the downstream side of the evaporator, only the local surface humidity data of the evaporator Quot; odor occurrence timing "in the evaporator can be accurately predicted as compared with the conventional technology for predicting the " timing ".

Further, since the structure for accurately predicting the "odor generation period" in the evaporator is provided, it is possible to increase the sterilization and deodorization efficiency of the evaporator according to the "odor generation period ".

In addition, since the sterilization and deodorization efficiency of the evaporator can be enhanced, it is possible to effectively cope with the generation of mold odor and odor in the evaporator.

Further, since the structure allows the user to manually control the prediction criteria of the "odor occurrence timing", the prediction sensitivity of the "odor occurrence timing" can be arbitrarily adjusted according to the taste and taste of the user.

In addition, since the prediction sensitivity of the "odor occurrence timing" can be arbitrarily adjusted according to the preference and taste of the user, there is an effect that it can positively respond to the "odor sensing ability" and "odor sensitivity" for each different occupant.

1 is a view showing a configuration of a vehicle air conditioner according to the present invention,
FIG. 2 is a graph showing an odor occurrence timing with respect to a temperature deviation at two points in the downstream portion of the evaporator when the air conditioner is turned off;
3 is a view showing a reference temperature deviation changing mode setting section constituting the vehicle air conditioning apparatus of the present invention, a controller for controlling the air conditioning apparatus showing the reference temperature deviation changing section,
FIG. 4 is a view showing an example of operation of the present invention, in which, when a reference temperature deviation value, which is a prediction reference of an odor generation timing, is changed, the changed state is displayed as a symbol on the display unit of the controller;
5 is a graph showing an odor occurrence timing with respect to the temperature deviation of two of the downstream portions of the evaporator when the air conditioner is off (OFF), and shows a case where the "reference temperature deviation" graph,
6 is a flow chart showing an operation example of the air conditioner for a vehicle according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail with reference to the accompanying drawings.

First, a vehicle air-conditioning apparatus according to the present invention will be briefly described with reference to FIG.

The vehicle air conditioner includes an air conditioner case 10 and an evaporator 20 and an ion generator 30 are installed in the inner passage 12 of the air conditioner case 10.

The evaporator 20 has a plurality of tubes (not shown) through which the refrigerant can flow, thereby cooling the air passing through the internal passage 12. [ Thus, the cooled air can be introduced into the passenger compartment. Thus, the interior of the vehicle is cooled.

The ion generator 30 is provided on the upstream side of the evaporator 20 and radiates high voltage pulses directly into the air in the internal passage 12 to generate negative ions and positive ions, respectively. Thus, the generated negative and positive ions can be introduced into the evaporator 20. As a result, bacteria, mold and odors living on the surface of the evaporator 20 are sterilized and deodorized.

The air conditioning case 10 includes a face vent 14. The face vent 14 is connected to the center discharge port 14a at the central portion on the front side of the driver's seat and the side discharge port 14b at both the front portions of the driver's seat. The face vent 14 connected to the face vent 14 passes through the evaporator 20 The cold air is discharged to the face portion of the passenger.

Next, a vehicle air conditioning system according to the present invention will be described in detail with reference to Figs. 1 to 4. Fig.

Referring first to FIG. 1, the air conditioner of the present invention includes a first temperature sensing unit 40 and a second temperature sensing unit 42 installed downstream of the evaporator 20.

The first temperature sensing means 40 is constituted by a temperature sensor and is installed on the downstream side of the evaporator 20. In particular, it is installed on the rear side 22 portion of the evaporator 20.

The first temperature sensing means 40 is configured to sense the temperature of the air that has passed through the evaporator 20. In particular, it is configured to sense the air temperature immediately after passing through the evaporator 20.

The second temperature sensing means 42 is constituted by a temperature sensor and is installed on the downstream side of the evaporator 20. In particular, it is installed at a portion further downstream than the first temperature sensing means (40).

The second temperature sensing means 42 is configured to sense the temperature of the air that has passed through the evaporator 20. Particularly, after passing through the evaporator 20, the air is primarily sensed by the first temperature sensing means 40 and secondarily sensed again at a time difference.

Preferably, the second temperature sensing means (42) is installed as far as possible from the first temperature sensing means (40). For example, at the discharge port side portion of the interior of the vehicle, which is the rear end side position of the "air flow path" on the downstream side of the evaporator 20. [ Particularly, it is preferable to be provided at the center discharge port 14a of the center portion on the driver's seat front side among the discharge port side portion of the vehicle cabin.

The reason for this construction is that the first temperature sensing means 40 and the second temperature sensing means 42 are arranged as far as possible apart from each other so that air passing through the evaporator 20 when the air conditioner is turned off, So as to be able to detect the temperature change until introduction. Particularly, it is possible to detect the temperature difference between the air immediately after passing through the evaporator 20 and the temperature just before being discharged to the vehicle interior.

The first temperature sensing means 40 is provided on the rear side 22 of the evaporator 20 and the second temperature sensing means 42 is provided on the side of the discharge port side However, the present invention is not limited to this, and it can be installed at any position on the downstream side where a temperature deviation occurs between the air that has passed through the evaporator 20 when the air conditioner is turned off.

For example, the first temperature sensing means 40 may be installed in the upper portion of the rear side 22 portion of the evaporator 20 and the second temperature sensing means 42 may be provided in the rear side 22 of the evaporator 20. [ It may be installed in the lower part of the part.

Therefore, when the air conditioner is turned off, the temperature deviation generated between the air passing through the upper portion of the evaporator 20 that is driest at the earliest and the air passing through the lower portion of the evaporator 20 being drier at the latest is detected You may.

Referring again to FIG. 1, the air conditioner of the present invention includes an air conditioner off-sensing means 50 for sensing the air conditioner off.

The air conditioner off detection means 50 is constituted by an air conditioner on / off switch (not shown).

When the user turns off the air conditioner using the air conditioner on / off switch, it outputs an "air conditioner OFF signal" to detect the off condition of the air conditioner.

In the case of the air conditioner of the automatic control system, the air conditioner off detection means 50 may be constituted by an automatic control unit (not shown).

The automatic control unit automatically turns on and off the air conditioner according to the temperature inside and outside the vehicle, thereby outputting an "air conditioner off signal"

Referring again to FIG. 1, the air conditioner of the present invention includes a control unit 60.

The control unit 60 is provided with a microprocessor. When the "air conditioner off signal" is inputted from the air conditioner off detecting means 60, the control unit 60 controls the first temperature detecting means 40 and the second temperature detecting means 42 And the temperature data at two locations on the downstream side of the evaporator 20 are compared and analyzed.

Particularly, after the air conditioning off point, the temperature data of two points remain the same without any temperature deviation. In this state, a comparative analysis is made as to whether a temperature deviation occurs between the two temperature data.

As a result of the comparative analysis, when the temperature deviation starts to occur between the two temperature data, it is again determined whether the generated temperature deviation is equal to or greater than a predetermined reference temperature deviation.

As a result of the comparison, if it is not less than the "reference temperature deviation ", it is determined that the generation of the mold odor and the odor in the evaporator 20 is started and the" odor occurrence time signal " Therefore, the "odor occurrence time" in the evaporator 20 is predicted.

Thereafter, the control unit 60 continuously analyzes the two temperature data input from the first temperature sensing unit 40 and the second temperature sensing unit 42 in the state of outputting the "odor occurrence time signal" do.

As a result of the comparative analysis, it is judged again whether the temperature deviation between the two sets of temperature data is reduced to a predetermined "reference temperature deviation" or less at this time as the temperature variation between the two sets of temperature data gradually increases.

As a result of the comparison, if the temperature of the evaporator 20 is reduced to the "reference temperature deviation" or less, the control unit 60 determines that the evaporator 20 has reduced the generation of mold odor and odor, and outputs an "odor endpoint signal". Therefore, it is predicted that the "odor generation period" in the evaporator 20 has ended.

The reason why the control unit 60 can predict the "odor occurrence time" in the evaporator 20 according to the temperature deviation of the two downstream sides of the evaporator 20 can be seen from the test result of FIG.

2, since the temperature of the evaporator 20 is raised after the air conditioner is turned off, the temperature of the air on the evaporator 20 side and the temperature of the air on the discharge side of the vehicle interior do not deviate from each other. Therefore, the temperature deviation between the two downstream sides of the evaporator 20 is lost.

However, when a predetermined time elapses after the air conditioner is turned off, condensed water starts to be generated on the surface of the evaporator 20, and the condensed water generated at this time temporarily blocks the heat from the evaporator 20 and the surrounding, (20) is temporarily restricted.

Therefore, a deviation occurs between the air temperature on the evaporator 20 side and the air temperature on the discharge side of the car. As a result, a temperature deviation occurs between two points on the downstream side of the evaporator 20, and the surface humidity of the evaporator 20 is rapidly increased at this point, so that the mold odor and odor rapidly increase in the evaporator 20. As a result, it becomes possible to accurately predict the " starting point of odor generation in the evaporator 20 ".

When a predetermined time elapses after a temperature deviation occurs between the two downstream sides of the evaporator 20, the surface condensate of the evaporator 20 starts to be dried. At this time, the surface condensate of the evaporator 20 is completely When the evaporator 20 is dried, there is no deviation between the temperature of the air on the evaporator 20 side and the temperature of the air on the discharge side of the car.

Therefore, there is no temperature deviation between the two downstream sides of the evaporator 20, and at this time, the mold odor and odor in the evaporator 20 are rapidly reduced and disappear. As a result, it becomes possible to accurately predict the "odor generation end point" in the evaporator 20.

On the other hand, the "reference temperature deviation" built in the control unit 60 is preferably set to " 0 DEG C ".

This is for the purpose of making it possible to predict that when the temperature difference between the two places on the downstream side of the evaporator 20 disappears at the time of OFF of the air conditioner, the generation of mold odor and odor immediately in the evaporator 20 starts. This is to set the predictive sensitivity of "odor occurrence timing" to the highest.

The control unit 60 increases the output voltage of the ion generator 30 when outputting the "odor occurrence time signal ". Therefore, the amount of negative ions increases. As a result, the sterilization and deodorization efficiency of the evaporator 20 is enhanced.

The control unit 60 controls the ion generator 30 to the original mode state when outputting the "odor occurrence end point signal ". Thus, the ion generator 30 can be operated in its original state.

In addition, the control unit 60 receives the surface humidity of the evaporator 20 from a humidity sensor (not shown) provided on the evaporator 20 side portion. At this time, the surface humidity of the evaporator 20 is set to " Even if the temperature difference between two points on the downstream side of the evaporator 20 is equal to or greater than the "reference temperature deviation ", when the temperature of the evaporator 20 is lower than the reference humidity, for example, 60% (relative humidity) And does not output the "odor occurrence time signal ".

Therefore, when the surface humidity of the evaporator 20 is 60% or less, it is predicted that the mold odor and odor are not generated in the evaporator 20.

The reason for this structure is that when the surface humidity of the evaporator 20 is 60% or less, the surface humidity of the evaporator 20 is low and there is no growth of fungi and bacteria in the evaporator 20, This is because there is no mold odor or odor.

Referring again to FIG. 1, the present invention further includes a reference temperature deviation changing unit 70 capable of changing the "reference temperature deviation" value of the control unit 60.

The reference temperature deviation changing unit 70 includes a reference temperature deviation changing mode setting unit 72. [

The reference temperature deviation changing mode setting section 72 is constituted by a button-type reference temperature deviation changing mode setting switch 82 provided on the front face of the air conditioner-apparatus controlling controller 80, as shown in Fig.

The reference temperature deviation changing mode setting switch 82 outputs a "reference temperature deviation changing mode signal" S1 when the user presses it. Therefore, the "reference temperature deviation" value of the controller 60, which is a criterion for the "odor occurrence time", is changed to a mode state in which the value can be changed.

Here, the reference temperature deviation changing mode setting switch 82 is provided with an indicator 82a. The indicator 82a is configured to be turned on when the user presses the reference temperature deviation changing mode setting switch 82 to turn it on. Therefore, it indicates that the mode has been switched to the mode state in which the "reference temperature deviation value"

Referring again to Fig. 1, the reference temperature deviation changing unit 10 includes a reference temperature deviation changing unit 74. [

The reference temperature deviation changing section 74 is composed of a rotary type switch, for example, a temperature adjustment switch 84, among the switches of the controller 80. [

The temperature control switch 84 of the reference temperature deviation changing section 74 causes the "reference temperature deviation value" to be adjusted in accordance with the rotational position when the user rotates.

In particular, when the user rotates the rotary type temperature control switch 84 clockwise, the "reference temperature deviation value" is increased and the counterclockwise rotation operation is performed to reduce the "reference temperature deviation value ". Therefore, the user can adjust the "reference temperature deviation value" which is a criterion of "odor occurrence time ".

Referring again to FIG. 1, when the reference temperature deviation changing mode signal S1 is inputted in the reference temperature deviation changing mode setting section 72, the control section 60 switches to the reference temperature deviation changing mode do.

3 and 4, the control unit 60, which has been switched to the "reference temperature deviation changing mode ", specifies the current" reference temperature deviation "value in the display unit 85 of the controller 80 For example, a number or a level meter, or a number and a level meter. Preferably, the current "reference temperature deviation" value is indicated by a level meter.

In this way, the control unit 60 displaying the current "reference temperature deviation" value on the display unit 85 clearly informs the user of the current "reference temperature deviation"

Further, the control unit 60 can display the current "reference temperature deviation" value on the display unit 85 so that the air conditioner can adjust the "reference temperature deviation" value, which is the prediction reference of the " Quot; reference temperature deviation change mode "

1, the control unit 60 changes the "reference temperature deviation" value when the user operates the reference temperature deviation changing unit 74 in the state of being switched to the "reference temperature deviation changing mode" .

For example, as shown in Figs. 3 and 4, when the user rotates the temperature control switch 84 of the reference temperature deviation changing section 74 clockwise, the value of the "reference temperature deviation" is increased. Conversely, when the user rotates the temperature control switch 84 counterclockwise, the value of the "reference temperature deviation" is decreased.

2 and 5, since the "reference temperature deviation" value is changed when the reference temperature deviation changing section 74 is operated in this way, the user can change the "reference temperature deviation" Temperature deviation "value can be easily adjusted, and as a result, it is possible to freely adjust the" odor occurrence point "and" odor occurrence end point ".

Therefore, the predictive sensitivity of the "odor occurrence timing" can be arbitrarily adjusted according to the taste and taste of the user. As a result, it is possible to positively respond to "odor detection ability" and "odor sensitivity" for each different occupant.

On the other hand, when the reference temperature deviation changing section 74 is operated to change the "reference temperature deviation" value, the control section 60 displays the changed "reference temperature deviation" value on the display section 85 of the controller 80 do.

Specifically, as shown in FIG. 4, the modified "reference temperature deviation" value is indicated by level meter 85a. Thus, the user is able to easily recognize the changed "reference temperature deviation" value.

Referring again to FIG. 1, the present invention further includes a reference temperature deviation changing mode canceling unit 76.

3, the reference temperature deviation changing mode releasing unit 76 is constituted by any one of the switches of the controller 80, for example, an off switch 86. [

The reference temperature deviation changing mode releasing section 76 is configured to output the "reference temperature deviation changing mode releasing signal S2 ", as shown in Fig. 1, when the user operates it by pressing. The output reference temperature deviation changing mode releasing signal S2 is input to the controller 60. [

On the other hand, when the "reference temperature deviation change mode cancel signal S2" is input in the reference temperature deviation change mode canceling unit 76, the control unit 60 is released from the "reference temperature deviation change mode" Quot; reference temperature deviation "value changed by the user is set and stored as it is. Thus, the smell occurrence timing predicting apparatus can be controlled according to the value of the "reference temperature deviation" selected by the user.

The control unit 60 removes the "reference temperature deviation" display symbol 85a displayed on the display unit 85 of the controller 80 while canceling the "reference temperature deviation changing mode" Return to the original state.

The control unit 60 also controls the indicator 82a of the reference temperature deviation changing mode setting switch 82 to be turned off when it is released from the reference temperature deviation changing mode. Therefore, the user is informed that the "reference temperature deviation" changing operation of the odor generation time predicting device has been completed.

On the other hand, depending on the case, there may be no reference temperature deviation changing mode releasing section 76. In this case, the controller 60 controls the odor generation timing predicting device in accordance with the value of the reference temperature variation changed by the reference temperature variation section 74, and then, after a predetermined time has elapsed, Allows the value to be saved automatically.

Next, an operation example of the present invention having such a configuration will be described with reference to Figs. 1 and 6. Fig.

First, it is determined whether the air conditioner is off (S101). As a result of the determination, if the air conditioner is off, it is again determined whether the temperature deviation between the two downstream sides of the evaporator 20 is equal to or greater than a predetermined reference temperature deviation (S103).

As a result of the determination, if the temperature is equal to or greater than the reference temperature deviation, the control unit 60 determines again whether the surface humidity of the evaporator 20 is equal to or greater than 60%, for example, at a predetermined level (S105).

As a result of the determination, if the surface humidity of the evaporator 20 is equal to or higher than the "reference humidity ", it is determined that the generation of mold odor and odor is started in the evaporator 20 and the" odor occurrence time signal " Therefore, the "odor occurrence time" in the evaporator 20 is predicted. At this time, the output voltage of the ion generator (30) is increased to increase the sterilization and deodorization efficiency of the evaporator (20).

On the other hand, in a state where the "odor occurrence time signal" is outputted, the control unit 60 again determines whether the temperature difference between the two downstream sides of the evaporator 20 is equal to or smaller than the "reference temperature deviation" (S109).

As a result of the determination, if it is equal to or less than the "reference temperature deviation ", the controller 60 determines that the evaporation of the mold odor and odor is lost in the evaporator 20 and outputs an" odor occurrence end point signal "(S111). Therefore, it is predicted that the "odor generation period" in the evaporator 20 has ended. At this time, the ion generator 30 is returned to the original mode state.

According to the present invention having such a configuration, since it is a structure that detects the air temperature deviation on the downstream side of the evaporator 20 and then predicts the "odor generation period" in the evaporator 20 using the detected air temperature deviation, The "odor occurrence timing" in the evaporator 20 can be accurately predicted as compared with the conventional technique of predicting the "odor occurrence timing" with only the surface humidity data of the evaporator 20.

Further, since the structure for accurately predicting the "odor occurrence timing" in the evaporator 20 can be achieved, the sterilization and deodorization efficiency of the evaporator 20 can be increased in accordance with the "odor occurrence timing".

Further, since the sterilization and deodorization efficiency of the evaporator 20 can be enhanced, it is possible to effectively deal with the generation of mold odor and odor in the evaporator 20.

In addition, since the user can manually control the prediction criteria of the "odor occurrence timing" manually, the prediction sensitivity of the "odor occurrence timing" can be arbitrarily adjusted according to the taste and taste of the user.

In addition, since the predicted sensitivity of the "odor occurrence timing" can be freely adjusted according to the taste and taste of the user, it is possible to positively respond to the "odor detection ability" and "odor sensitivity" for each different occupant.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10: air conditioning case 12: internal passage
20: Evaporator 30: Ion generator
40: first temperature sensing means 42: second temperature sensing means
50: air conditioner off detection means 60:
70: Reference temperature variation unit (Unit)
72: reference temperature deviation change mode setting section
74: reference temperature deviation changing section 76: reference temperature deviation changing mode releasing section
80: Controller for air conditioner control
82: Reference temperature deviation change mode setting switch
82a: Indicator 84: Temperature control switch
85: Display part 85a: Display symbol (level meter)
86: OFF switch S1: Reference temperature deviation change mode signal
S2: Reference temperature deviation change mode release signal

Claims (10)

And an evaporator 20 installed in the inner passage 12 of the air conditioner case 10. The evaporator 20 is operated when the air conditioner is turned on and cools the air blown into the passenger compartment In the apparatus,
First and second temperature sensing means (40, 42) installed on the downstream air passage of the evaporator (20) so as to sense the temperature of the air at two downstream sides of the evaporator (20);
When the air conditioner is turned off, the magnitude of the temperature deviation at two downstream sides of the evaporator 20 inputted from the first and second temperature sensing means 40 and 42 and the predetermined reference temperature deviation A controller (60) for predicting the generation time of the odor in the evaporator (20);
And a reference temperature deviation changing unit (70) capable of changing a reference temperature deviation of the controller (60) as a smell generation timing predicting reference. The method according to claim 1,
The reference temperature deviation changing unit (70)
A reference temperature deviation changing mode setting unit 72 that can set the mode in which the reference temperature deviation can be changed and a reference temperature deviation changing unit 74 that can actually change the reference temperature deviation,
The control unit (60)
If the reference temperature deviation is changed by the reference temperature deviation changing unit 74 in a state where the reference temperature deviation changing mode signal S 1 is inputted in the reference temperature deviation changing mode setting unit 72, And estimating an odor generation timing based on the estimated odor generation timing. 3. The method of claim 2,
The control unit (60)
When the reference temperature deviation changing mode signal S 1 is inputted in the reference temperature deviation changing mode setting section 72, the current reference temperature deviation is outputted to the display section 85 of the controller 80 for controlling the air conditioning apparatus, 85a). ≪ / RTI > 3. The method of claim 2,
The reference temperature deviation changing mode setting unit 72,
A reference temperature deviation changing mode setting switch 82 provided on the front side of the air conditioner controlling controller 80 and the reference temperature deviation changing mode setting switch 82 is provided with an indicator 82a,
The indicator 82a is turned on when the user operates the reference temperature deviation changing mode setting switch 82 to change the reference temperature deviation and is turned off when the reference temperature deviation is changed. And the air conditioner is controlled so as to be controlled. 5. The method according to any one of claims 2 to 4,
The reference temperature deviation changing section 74,
And a rotary type switch among the switches provided in the air conditioner control controller 80,
Wherein the reference temperature deviation is adjusted according to a rotational position of the rotary switch. 5. The method according to any one of claims 2 to 4,
And a reference temperature deviation changing mode releasing unit 76,
The control unit (60)
When the reference temperature deviation changing mode canceling signal S2 is input in the reference temperature variation changing mode canceling unit 76, the air conditioning apparatus is returned to the original mode state while storing the specific reference temperature variation changed by the user Wherein the air conditioner comprises: 3. The method according to claim 1 or 2,
The control unit (60)
When the temperature deviations of the two downstream sides of the evaporator 20 inputted from the first and second temperature sensing means 40 and 42 are equal to or more than a predetermined reference temperature deviation when the air conditioner is turned off, And outputs an odor occurrence time signal by predicting that the odor is generated in the evaporator (20). 8. The method of claim 7,
The control unit (60)
As the reference temperature deviation becomes smaller, the smell generation timing predicting sensitivity is controlled to be inversely proportional to the reference temperature deviation,
The reference temperature deviation changing unit (70)
And the reference temperature deviation of the controller (60) can be changed according to user-specific odor sensitivity. 8. The method of claim 7,
The control unit (60)
When the surface humidity of the evaporator 20 is equal to or lower than a preset reference humidity, it is determined that the odor is not generated in the evaporator 20 even if the temperature deviation between the two points on the downstream side of the evaporator 20 is equal to or greater than the reference temperature deviation And does not output the smell generation time signal. 10. The method of claim 9,
Wherein the reference humidity preset in the controller (60) is 60% relative humidity.

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