Air conditioning system for automotive vehicles

Abstract

The present invention relates to a vehicle air conditioning system and aims to enable the airflow volume on the rear floor duct side and the airflow volume on the console duct side to be individually controlled, thereby allowing the airflow volume on the rear floor surface side through the rear floor duct and the airflow volume on the rear passenger side through the console duct to be accurately controlled according to the set size and airflow level. To achieve this purpose, the present invention comprises a console duct and a rear floor duct that blow discharged air from a front seat blower toward the rear seat passenger side and the floor side, respectively; a rear seat mode door that controls the airflow from the front seat blower toward the console duct and the rear floor duct side; and a rear seat blower installed in the console duct to increase the airflow volume and air pressure of the air blown toward the rear seat passenger side, wherein the rear seat console door is installed on the internal flow path of the console duct to control the airflow volume of the air blown toward the rear seat passenger side along the console duct; and a control unit that controls the opening position of the rear seat console door relative to the console duct and the opening position of the rear seat mode door relative to the console duct and the rear floor duct, and blows an airflow volume corresponding to the currently set rear seat air discharge mode and airflow level toward the rear seat floor side and the rear seat passenger side, respectively.

Description

Technology Field

[0001] The present invention relates to a vehicle air conditioning system, and more specifically, to a vehicle air conditioning system configured to individually control the air flow rate on the rear floor duct side and the air flow rate on the console duct side, thereby enabling accurate control of the airflow rate on the rear floor surface side through the rear floor duct and the airflow rate on the rear passenger side through the console duct according to a set size and airflow rate level. Background Technology

[0002] Recently, individual air conditioning systems that independently cool and heat multiple areas within the vehicle cabin are being developed. For example, front and rear individual air conditioning systems that independently cool and heat the front and rear sections of the cabin have been developed and are in use.

[0003] As shown in FIG. 1, the individual air conditioning system for the front and rear seats includes a console vent (5) and a rear floor vent (7) that discharge air from the cooling heat exchanger (1) and the heating heat exchanger (3) side to the passenger side and the floor side of the rear seat section, respectively.

[0004] In particular, the console vent (5) and the rear floor vent (7) discharge the cold air on the rear cold air passage (1a) side that has passed through the cooling heat exchanger (1) and the hot air on the hot air passage (3a) side that has passed through the heating heat exchanger (3) to the console duct (8) and the rear floor duct (9).

[0005] Accordingly, the cold and hot air from the cooling heat exchanger (1) and the heating heat exchanger (3) can be blown to the passenger side and the floor side of the rear seat portion, respectively, through the console duct (8) and the rear floor duct (9), thereby allowing the rear seat portion of the vehicle interior to be cooled and heated.

[0006] Meanwhile, the individual air conditioning system for the front and rear seats further includes a rear seat mode door (10) installed at the branch point between the console vent (5) and the rear floor vent (7), and a rear seat blower (12) installed on the console duct (8).

[0007] The above rear seat mode door (10) rotates between the console vent (5) and the rear floor vent (7) to adjust the opening amount of the console vent (5) and the rear floor vent (7).

[0008] In particular, the opening amount of the console vent (5) and the rear floor vent (7) is adjusted according to the rear seat air discharge mode state.

[0009] For example, when the rear seat air discharge mode is in Vent Mode, the console vent (5) is opened and the rear floor vent (7) is closed. Thus, cold and hot air can be blown toward the body of the rear seat occupant.

[0010] And when the rear seat air discharge mode is Floor Mode, the console vent (5) is blocked and the rear floor vent (7) is opened. Thus, cold and hot air can be blown toward the floor surface of the rear seat.

[0011] And when the rear seat air discharge mode is in Bi-Level Mode, the console vent (5) and the rear floor vent (7) are controlled to open simultaneously. Thus, cold and hot air can be blown simultaneously to the rear seat passenger's body side and the floor side.

[0012] Unlike the front seat blower (not shown) which sucks in outside air of the air conditioning case (14), the rear seat blower (12) sucks in inside air of the air conditioning case (14), thereby further increasing the volume and pressure of air blown to the rear seat passenger side along the console duct (8).

[0013] Therefore, the airflow volume and air pressure blown toward the rear passengers are increased. This improves the cooling and heating performance of the rear section.

[0014] However, in this conventional air conditioning system, the airflow volume of the rear floor duct (9) side blowing air toward the rear floor surface is determined by the front seat blower of the air conditioning case (14), and the airflow volume of the console duct (8) side blowing air toward the rear passenger side is determined by the front seat blower and the rear seat blower (12).

[0015] Thus, there is a disadvantage that it is very difficult and tricky to accurately adjust the air volume on the rear floor duct (9) side and the air volume on the console duct (8) side to the set size through the control of the front seat blower and the rear seat blower (12).

[0016] In particular, when the rear air discharge mode is a bi-level mode, the airflow distribution between the rear floor duct (9) side and the console duct (8) side is accurately controlled to match a preset size, and the discharge airflow between the rear floor side and the rear passenger side is accurately controlled to match a preset airflow level.

[0017] However, as mentioned above, the air volume on the console duct (8) side is affected by both the front seat blower and the rear seat blower (12) simultaneously, so it has the disadvantage of being difficult to control according to the set size. Because of this disadvantage, there is a problem that it is very difficult to accurately control the air volume distribution between the rear floor duct (9) side and the console duct (8) side according to the set size.

[0018] Moreover, in the case of the front seat blower, it is controlled based on the airflow level set for the front seat side. However, there is a disadvantage in that it is impossible to match the airflow of the rear floor duct (9) side and the airflow of the console duct (8) side to the airflow level set for the rear seat using the airflow of the front seat blower controlled based on the airflow level set for the front seat side.

[0019] And because of these disadvantages, when the rear air discharge mode is set to a bi-level mode, the airflow distribution between the rear floor duct (9) side and the console duct (8) side cannot be controlled to a preset size, and as a result, there is a problem that the discharge airflow between the rear floor side and the rear passenger side is not controlled to a preset airflow level.

[0020] In addition, under rear seat bi-level mode conditions, the airflow level of the front seat blower and the rear seat blower (12) may vary depending on the user or internal / external temperature conditions. In such cases, there is a disadvantage that it cannot respond to the variable airflow level of the front seat blower and the rear seat blower (12).

[0021] In particular, as explained above, in the case of a front seat blower, since it is controlled based on the airflow level set on the front seat side, there is a disadvantage that it cannot respond when the airflow level of the front seat blower changes due to a change in the airflow level set on the front seat side.

[0022] And due to these disadvantages, the airflow distribution between the rear floor duct (9) side and the console duct (8) side cannot be controlled according to the set ratio, and as a result, there is a problem that the discharge airflow between the rear floor side and the rear passenger side is not controlled according to the set airflow level.

[0023] Ultimately, due to the problems mentioned above, there is a disadvantage in that the airflow volume and airflow level on the rear floor side and the rear passenger side under rear seat bi-level mode conditions are not controlled to a preset state, and it is pointed out that the comfort of the rear seat area is significantly reduced due to this disadvantage. The problem to be solved

[0024] The present invention was devised to solve the aforementioned conventional problems, and its purpose is to provide a vehicle air conditioning system capable of individually controlling the air flow rate on the rear floor duct side and the air flow rate on the console duct side.

[0025] Another objective of the present invention is to configure the air flow rate on the rear floor duct side and the air flow rate on the console duct side to be individually controlled, thereby accurately controlling the airflow rate on the rear floor surface side through the rear floor duct and the airflow rate on the rear passenger side through the console duct to match the set size and airflow rate level.

[0026] Another objective of the present invention is to individually adjust the air volume on the rear floor duct side and the air volume on the console duct side, respectively, and to configure the air volume between them to be organically controlled, thereby accurately controlling the distribution of air volume between the rear floor duct side and the console duct side and each air volume to a preset size during the rear seat by-level mode.

[0027] Another objective of the present invention is to configure the airflow distribution between the rear floor duct side and the console duct side and to accurately control each airflow to a preset size during the rear seat by-level mode, thereby enabling the airflow volume and airflow level of the rear seat floor side and the rear seat passenger side to be controlled according to the set value during the rear seat by-level mode, and thereby improving the comfort of the rear seat area.

[0028] Another objective of the present invention is to variably adjust the air volume on the rear floor duct side and the air volume on the console duct side, respectively, according to the air volume levels of the front seat blower and the rear seat blower during the rear seat bi-level mode.

[0029] Another objective of the present invention is to actively respond to changes in the air volume of the rear floor duct and the air volume of the console duct that occur due to changes in the air volume levels of the front seat blower and the rear seat blower under rear seat by-level mode conditions, by configuring the air volume of the rear floor duct and the air volume of the console duct to be variablely adjusted according to the air volume levels of the front seat blower and the rear seat blower, respectively.

[0030] Another objective of the present invention is to compensate for changes in airflow volume on the rear floor side and the rear passenger side that occur when the airflow volume of the front seat blower and the rear seat blower changes, by actively responding to changes in airflow volume on the rear floor duct side and airflow volume on the console duct side that occur according to changes in airflow volume levels of the front seat blower and the rear seat blower under rear seat bi-level mode conditions.

[0031] Another objective of the present invention is to compensate for changes in the airflow rate on the rear floor side and the rear passenger side that occur when the airflow rate of the front blower and the rear blower changes under rear seat bi-level mode conditions, thereby controlling the discharge airflow rate on the rear floor side and the rear passenger side to match the set airflow rate regardless of changes in the airflow rate of the front blower and the rear blower during rear seat bi-level mode. means of solving the problem

[0032] To achieve this purpose, a vehicle air conditioning system according to the present invention comprises: a console duct and a rear floor duct that respectively blow discharged air from a front seat blower toward the rear seat passenger side and the floor side; a rear seat mode door that controls the airflow distribution from the front seat blower toward the console duct and the rear floor duct side; and a rear seat blower installed in the console duct to increase the airflow volume and air pressure of the air blown toward the rear seat passenger side, wherein the rear seat console door installed on the internal flow path of the console duct to control the airflow volume of the air blown toward the rear seat passenger side along the console duct; It is characterized by including a control unit that controls the opening position of the rear seat console door with respect to the console duct and the opening position of the rear seat mode door with respect to the console duct and the rear floor duct, and blows airflow corresponding to the currently set rear seat air discharge mode and airflow level to the rear seat floor surface side and the rear seat passenger side, respectively.

[0033] And the rear seat console door is characterized by being installed on the upstream internal passage of the rear seat blower among the internal passages of the console duct.

[0034] And the control unit is characterized by organically controlling the rear seat mode door and the rear seat console door according to the airflow level of the front seat blower and the rear seat blower when the rear seat air discharge mode is in bi-level mode, so that an airflow corresponding to the rear seat bi-level mode and the set airflow level can be blown to the rear seat floor side and the rear seat passenger side, respectively.

[0035] And the control unit is characterized by controlling the opening position of the rear seat mode door relative to the rear floor duct and the opening position of the rear seat console door relative to the console duct to a constant preset position under the condition that, under the rear seat bi-level mode condition, the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower.

[0036] And the control unit is characterized by controlling the opening position of the rear seat mode door with respect to the rear floor duct to a position where the rear floor duct is further closed, in contrast to the condition where the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower, when the airflow level of the front seat blower exceeds the airflow level of the rear seat blower under rear seat bi-level mode conditions.

[0037] And the control unit is characterized by controlling the opening position of the rear seat console door with respect to the console duct under the rear seat by-level mode condition, when the airflow level of the front seat blower exceeds the airflow level of the rear seat blower, to a position where the console duct is closed further in contrast to the condition where the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower. Effects of the invention

[0038] According to the vehicle air conditioning system of the present invention, since the rear seat console door is installed on the console duct side and the rear seat console door and the rear seat mode door are individually controlled through a control unit, the air volume on the rear floor duct side and the air volume on the console duct side can be individually controlled, respectively.

[0039] In addition, since the air volume on the rear floor duct side and the air volume on the console duct side can be adjusted individually, the airflow to the rear floor surface side through the rear floor duct and the airflow to the rear passenger side through the console duct can be accurately controlled according to the set size and airflow level.

[0040] In addition, since the rear console door and rear mode door are controlled individually but are organically controlled, in the rear bi-level mode, the airflow distribution between the rear floor duct side and the console duct side and each airflow can be accurately controlled to a preset size.

[0041] In addition, in the rear seat bi-level mode, the airflow distribution between the rear floor duct side and the console duct side and the respective airflow volumes can be accurately controlled to match preset sizes. Therefore, in the rear seat bi-level mode, the airflow volume and airflow level of the rear seat floor side and the rear seat passenger side can be controlled according to the set values, thereby improving the comfort of the rear seat area.

[0042] In addition, since the structure organically controls the rear console door and the rear mode door according to the airflow levels of the front blower and the rear blower in the rear bi-level mode, it has the effect of being able to variably adjust the airflow on the rear floor duct side and the airflow on the console duct side, respectively, according to the airflow levels of the front blower and the rear blower in the rear bi-level mode.

[0043] In addition, in the rear seat bi-level mode, the air volume on the rear floor duct side and the air volume on the console duct side can be variably adjusted according to the air volume levels of the front seat blower and the rear seat blower, respectively, so there is an effect of actively responding to changes in the air volume on the rear floor duct side and the air volume on the console duct side that occur due to changes in the air volume levels of the front seat blower and the rear seat blower under the rear seat bi-level mode conditions.

[0044] In addition, since it can actively respond to changes in air volume on the rear floor duct side and air volume on the console duct side caused by changes in the air volume levels of the front seat blower and the rear seat blower under rear seat bi-level mode conditions, it has the effect of compensating for changes in air volume on the rear seat floor side and the rear seat passenger side caused by changes in the air volume levels of the front seat blower and the rear seat blower.

[0045] In addition, since it is possible to compensate for changes in airflow on the rear floor side and rear passenger side that occur when the airflow level of the front blower and rear blower changes under rear seat bi-level mode conditions, it is possible to control the discharge airflow on the rear floor side and rear passenger side to the set airflow level regardless of changes in the airflow level of the front blower and rear blower during rear seat bi-level mode. Brief explanation of the drawing

[0046] FIG. 1 is a side cross-sectional view showing a conventional vehicle air conditioning system, FIG. 2 is a side cross-sectional view showing the configuration of a vehicle air conditioning system according to the present invention. Specific details for implementing the invention

[0047] Hereinafter, a preferred embodiment of a vehicle air conditioning system according to the present invention will be described in detail with reference to the attached drawings (components identical to those of the prior art are described using the same reference numerals).

[0048] First, before examining the features of the vehicle air conditioning system according to the present invention, the individual air conditioning system for the front and rear seats will be briefly described with reference to FIG. 2.

[0049] The individual air conditioning system for the front and rear seats includes a console vent (5) and a rear floor vent (7) that discharge air from the cooling heat exchanger (1) and the heating heat exchanger (3) side to the passenger side and the floor side of the rear seat section, respectively.

[0050] The console vent (5) and rear floor vent (7) respectively discharge cold air from the rear cold air passage (1a) side that has passed through the cooling heat exchanger (1) and hot air from the hot air passage (3a) side that has passed through the heating heat exchanger (3) to the console duct (8) and rear floor duct (9) sides.

[0051] Accordingly, the cold and hot air from the cooling heat exchanger (1) and the heating heat exchanger (3) can be blown to the passenger side and the floor side of the rear seat portion, respectively, through the console duct (8) and the rear floor duct (9), thereby allowing the rear seat portion of the vehicle interior to be cooled and heated.

[0052] And the individual air conditioning system for the front and rear seats further includes a rear seat mode door (10) installed at the branch point between the console vent (5) and the rear floor vent (7), and a rear seat blower (12) installed on the console duct (8).

[0053] The above rear seat mode door (10) rotates between the console vent (5) and the rear floor vent (7) to adjust the opening amount of the console vent (5) and the rear floor vent (7). In particular, it controls the air circulation between the console duct (8) and the rear floor duct (9) by adjusting the opening amount of the console vent (5) and the rear floor vent (7) according to the rear seat air discharge mode state.

[0054] The above rear seat blower (12) further increases the volume and pressure of the air blown toward the passenger side of the rear seat along the console duct (8). Thus, the volume and pressure of the air blown toward the passenger body side of the rear seat are increased.

[0055] Next, the features of the vehicle air conditioning system according to the present invention will be examined in detail with reference to FIG. 2.

[0056] First, the air conditioning device of the present invention further includes a rear seat console door (20) installed on the internal passage (8a) of the upstream console duct (8) of the rear seat blower (12).

[0057] The above rear seat console door (20) is a flat door and rotates according to a control signal from the control unit (30) described later, thereby controlling the opening amount of the internal passage (8a) of the console duct (8).

[0058] Accordingly, the amount of air blown along the console duct (8) toward the rear passenger's body is controlled.

[0059] In particular, it independently controls the volume of air blown toward the rear passenger's torso. This allows the airflow toward the rear passenger to be controlled according to a set size and volume level.

[0060] And the air conditioning unit of the present invention is equipped with a control unit (30) that controls the rear seat mode door (10) and the rear seat console door (20), respectively.

[0061] The above control unit (30) is equipped with a microprocessor and is configured to organically control the opening amount of the rear seat mode door (10) and the rear seat console door (20) according to the airflow level of the front seat blower (40) and the rear seat blower (12), so as to blow airflow corresponding to the current rear seat air discharge mode and the set airflow level to the rear seat floor side and the rear seat passenger side, respectively.

[0062] In particular, when the rear air discharge mode is in bi-level mode, the opening amount of the rear mode door (10) for the rear floor vent (7) and the opening amount of the rear console door (20) for the internal flow path (8a) of the console duct (8) are configured to organically control each other according to the airflow level of the front blower (40) and the rear blower (12).

[0063] Accordingly, airflow corresponding to the rear seat bi-level mode conditions and the airflow level conditions set by the user or internal / external temperature conditions can be blown to the rear seat floor side and the rear seat passenger side, respectively.

[0064] To explain this in more detail, the control unit (30) is equipped with a memory unit (32).

[0065] The memory unit (32) above contains a mapping table for the rear seat mode door opening position control values ​​for each airflow level of the front seat blower and the rear seat blower under rear seat bi-level mode conditions, as shown in [Table 1] below.

[0066] Rear seat mode door opening position control values ​​by airflow level of front and rear blowers under rear seat bi-level mode conditions (floor vent opening amount: A > B > C > D > E > F > G > H) Rear seat mode door opening position control value (V) Full seat blower airflow level 1st stage 2nd level 3rd stage 4th stage 5th level 6th gear 7th gear 8th gear Rear seat blower airflow level 1st stage A B C D E F G H 2nd level A A B C D E F G 3rd stage A A A B C D E F 4th stage A A A A B C D E 5th level A A A A A B C D 6th gear A A A A A A B C 7th gear A A A A A A A B 8th gear A A A A A A A A

[0067] The control values ​​for the opening position of the rear seat mode door according to the airflow levels of the front seat blower (40) and the rear seat blower (12) are variously stored according to the airflow levels of the front seat blower (40) and the rear seat blower (12) as correction values ​​for the opening position of the rear seat mode door (10) to correct the airflow amount on the rear seat floor side, which varies according to the airflow levels of the front seat blower (40) and the rear seat blower (12) in the rear seat bi-level mode, to match the set rear seat airflow level.

[0068] And the memory unit (32) has a mapping table for the rear seat console door opening position control values ​​for each airflow level of the front seat blower and the rear seat blower under rear seat bi-level mode conditions, as shown in [Table 2] below.

[0069] Rear console door opening position control values ​​by airflow level of front and rear blowers under rear bi-level mode conditions (console duct internal flow path opening amount: K>L>M>N>O>P>Q>R) Rear console door opening position control value (V) Full seat blower airflow level 1st stage 2nd level 3rd stage 4th stage 5th level 6th gear 7th gear 8th gear Rear seat blower airflow level 1st stage K L M N O P Q R 2nd level K K L M N O P Q 3rd stage K K K L M N O P 4th stage K K K K L M N O 5th level K K K K K L M N 6th gear K K K K K K L M 7th gear K K K K K K K L 8th gear K K K K K K K K

[0070] The control values ​​for the opening position of the rear seat console door according to the airflow levels of the front seat blower and the rear seat blower are stored in various ways according to the airflow levels of the front seat blower (40) and the rear seat blower (12) as correction values ​​for the opening position of the rear seat console door (20) to correct the airflow volume on the rear seat passenger side, which varies according to the airflow levels of the front seat blower (40) and the rear seat blower (12) in the rear seat bi-level mode, to match the set rear seat airflow level.

[0071] Meanwhile, the control unit (30) determines whether the current rear seat air discharge mode is a bi-level mode. If the result of the determination is that it is a bi-level mode, the rear seat mode door opening position control value corresponding to the current front seat blower airflow level and rear seat blower airflow level input from the front seat blower (40) and the rear seat blower (12) side, and the rear seat console door opening position control value are each detected in the memory unit (32).

[0072] And when the detection of the rear seat mode door opening position control value and the rear seat console door opening position control value is completed, the control unit (30) variably controls the opening position of the rear seat mode door (10) and the opening position of the rear seat console door (20) based on the detected rear seat mode door opening position control value and the rear seat console door opening position control value.

[0073] In particular, the opening position of the rear seat mode door (10) with respect to the rear floor vent (7) and the opening position of the rear seat console door (20) with respect to the internal passage (8a) of the console duct (8) are each controlled.

[0074] Accordingly, in the rear seat bi-level mode, when the airflow level of the front seat blower (40) and the rear seat blower (12) is varied by user settings or internal / external temperature conditions, and the airflow on the rear seat floor side and the passenger side changes differently from the set rear seat airflow level, the opening position of the rear seat mode door (10) and the rear seat console door (20) can be corrected in response.

[0075] Thus, in the rear seat bi-level mode, even if the airflow level of the front seat blower (40) and the rear seat blower (12) varies, the discharge airflow on the rear seat floor side and the passenger side can be corrected to match the set rear seat airflow level.

[0076] As a result, regardless of the change in the airflow level of the front seat blower (40) and the rear seat blower (12), the discharge airflow on the rear seat floor side and the passenger side is controlled to match the set rear seat airflow level, thereby keeping the rear seat area comfortable.

[0077] Meanwhile, among the rear seat mode door opening position control values ​​and rear seat console door opening position control values ​​for each airflow level of the front seat blower and rear seat blower under the rear seat bi-level mode conditions stored in the memory unit (32), as described in [Table 1] and [Table 2] above, when the airflow level of the front seat blower (40) is equal to or lower than the airflow level of the rear seat blower (12), that is, when the airflow level of the front seat blower (40) is less than or equal to the airflow level of the rear seat blower (12), the rear seat mode door opening position control values ​​and the rear seat console door opening position control values ​​are each stored as preset default values ​​(A)(K).

[0078] Accordingly, under conditions where the airflow level of the front seat blower (40) is less than or equal to the airflow level of the rear seat blower (12), the opening position of the rear seat mode door (10) relative to the rear floor vent (7) and the opening position of the rear seat console door (20) relative to the internal flow path (8a) of the console duct (8) are configured to always be controlled to a preset position regardless of the airflow levels of the front seat blower (40) and the rear seat blower (12).

[0079] The reason for configuring it this way is that under conditions where the airflow level of the front seat blower (40) is less than or equal to the airflow level of the rear seat blower (12), even if the airflow levels of the front seat blower (40) and the rear seat blower (12) change, the change in airflow between the rear seat floor side and the rear seat passenger side does not result in a large deviation compared to the preset airflow level.

[0080] Here, among the rear seat mode door opening position control values ​​embedded in the memory unit (32), the default value (A) is preferably set to correspond to the opening amount of the rear seat mode door (10) relative to the rear floor vent (7) being 44%.

[0081] Additionally, among the rear seat console door opening position control values ​​embedded in the memory unit (32), the default value (K) is preferably set to correspond to the opening amount of the rear seat console door (20) with respect to the internal flow path (8a) of the console duct (8) at 100%.

[0082] Accordingly, under rear seat bi-level mode conditions, when the airflow level of the front seat blower (40) is less than or equal to the airflow level of the rear seat blower (12), the opening position of the rear seat mode door (10) is controlled to a position where the rear floor vent (7) is opened 44%, and the opening position of the rear seat console door (20) is controlled to a position where the console duct (8) is opened 100%.

[0083] And, referring to [Table 1] above, among the rear seat mode door opening position control values ​​for each airflow level of the front seat blower and rear seat blower under the rear seat bi-level mode condition stored in the memory unit (32), when the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the rear seat mode door opening position control values ​​are stored as values ​​(B, C, D, E, F, G, H) less than the basic value (A).

[0084] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the opening position of the rear seat mode door (10) with respect to the rear floor vent (7) is controlled to further close the rear floor vent (7) in contrast to conditions where the airflow level of the front seat blower (40) is less than or equal to the airflow level of the rear seat blower (12).

[0085] The reason for this configuration is that, as shown in FIG. 2, when the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), a large deviation occurs in the change of the discharge airflow on the rear seat floor side and the rear seat passenger side compared to the set size when the airflow levels of the front seat blower (40) and the rear seat blower (12) change.

[0086] In particular, when the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the airflow of air discharged to the rear seat floor surface through the rear floor vent (7) and rear floor duct (9) is relatively large, so the airflow ratio with the airflow discharged to the rear seat passenger side does not match the set size.

[0087] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the rear floor vent (7) is closed further to control the opening amount of the rear floor vent (7) to be small, thereby reducing the airflow to the rear floor vent (7) and the rear floor duct (9), and reducing the discharge airflow to the rear seat floor surface.

[0088] As a result, it is possible to compensate for the increase in discharge air volume toward the rear floor side and the difference in air distribution ratio between the rear floor side and the rear passenger side caused by the condition where the air volume level of the front seat blower (40) exceeds the air volume level of the rear seat blower (12).

[0089] Preferably, as described in [Table 1], when the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the control values ​​for the opening position of the rear seat mode door for each airflow level of the front seat blower and the rear seat blower are stored as being smaller than the default value (A), and are stored as values ​​that control the rear floor vent (7) to gradually close in inverse proportion to the difference between the airflow levels of the front seat blower (40) and the rear seat blower (12) as the difference increases.

[0090] For example, as shown in [Table 1], under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), as the difference in airflow levels between the front seat blower (40) and the rear seat blower (12) increases from 1st level → 2nd level → 3rd level → 4th level → 5th level → 6th level → 7th level, the rear seat mode door opening position control values ​​gradually decrease from B → C → D → E → F → G → H, and are configured to control the rear floor vent (7) to gradually close.

[0091] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), as the difference in airflow levels between the front seat blower (40) and the rear seat blower (12) increases, the rear floor vent (7) is gradually closed to reduce the airflow to the rear floor duct (9).

[0092] The reason for this configuration is that, as illustrated in FIG. 2, under conditions where the air volume level of the front seat blower (40) exceeds the air volume level of the rear seat blower (12), as the difference between the air volume levels of the front seat blower (40) and the rear seat blower (12) increases, the air volume of the rear floor duct (9) side increases relatively in proportion to the air volume of the console duct (8).

[0093] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), as the difference between the airflow levels of the front seat blower (40) and the rear seat blower (12) increases, the rear floor vent (7) is gradually blocked, thereby gradually reducing the airflow on the rear floor duct (9) side.

[0094] Thus, the difference between the increase in air flow rate on the rear floor duct (9) side and the air flow rate on the console duct (8) side resulting therefrom can be compensated, and as a result, the difference in the air flow ratio between the rear floor side and the rear passenger side due to the increase in discharge air flow rate to the rear floor side can be compensated.

[0095] Again, referring to FIG. 2, among the rear seat console door opening position control values ​​for the airflow levels of the front seat blower and the rear seat blower stored in the memory unit (32) under the rear seat bi-level mode condition, as described in [Table 2] above, when the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the rear seat console door opening position control values ​​are stored as values ​​(L, M, N, O, P, Q, R) less than the basic value (K).

[0096] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the opening position of the rear seat console door (20) with respect to the internal flow path (8a) of the console duct (8) is controlled to further close the internal flow path (8a) of the console duct (8) in contrast to conditions where the airflow level of the front seat blower (40) is less than or equal to the airflow level of the rear seat blower (12).

[0097] The reason for this configuration is that, as shown in FIG. 2, when the air volume of the front seat blower (40) exceeds the air volume of the rear seat blower (12), the air volume of the console duct (8) is greatly affected by the discharge air volume of the front seat blower (40), and due to the discharge air volume of the front seat blower (40) affected in this way, the air volume of the console duct (8) becomes excessively larger than the set size.

[0098] In particular, the air flow rate on the console duct (8) side is excessively larger than the set size, so the air distribution ratio between the rear passenger side and the rear floor side does not match the set size.

[0099] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the internal flow path (8a) of the console duct (8) is further closed to control the opening amount of the console duct (8) to be small, thereby reducing the excessively large airflow on the console duct (8) side.

[0100] Thus, the excessive increase in air volume on the console duct (8) side and the resulting difference in air volume between the console duct (8) side and the rear floor duct (9) side can be compensated, and as a result, the difference in air volume ratio between the rear passenger side and the rear floor side caused by the excessive increase in air volume on the console duct (8) side can be compensated.

[0101] Preferably, as described in [Table 2], when the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), the control values ​​for the opening position of the rear seat console door for each airflow level of the front seat blower and the rear seat blower are stored as being less than the basic value (K), and are stored as values ​​that control the internal flow path (8a) of the console duct (8) in a direction that gradually blocks it in inverse proportion to the difference between the airflow levels of the front seat blower (40) and the rear seat blower (12).

[0102] For example, as shown in [Table 2], under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), as the airflow level difference between the front seat blower (40) and the rear seat blower (12) increases from 1st level → 2nd level → 3rd level → 4th level → 5th level → 6th level → 7th level, the rear seat console door opening position control values ​​are configured to gradually decrease in the order of L → M → N → O → P → Q → R, thereby controlling the internal flow path (8a) of the console duct (8) to gradually close.

[0103] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), as the difference between the airflow levels of the front seat blower (40) and the rear seat blower (12) increases, the internal flow path (8a) of the console duct (8) is gradually closed in inverse proportion to this, thereby reducing the airflow on the console duct (8) side.

[0104] The reason for this configuration is that, as illustrated in FIG. 2, under conditions where the air volume of the front seat blower (40) exceeds the air volume of the rear seat blower (12), the greater the difference between the air volumes of the front seat blower (40) and the rear seat blower (12), the air volume on the console duct (8) side is greatly affected by the discharge air volume of the front seat blower (40).

[0105] In particular, the air flow rate on the console duct (8) side is greatly affected by the discharge air rate of the front seat blower (40), so the air flow rate on the console duct (8) side becomes excessively large compared to the set size, and the discharge air rate on the rear seat passenger side increases excessively compared to the discharge air rate on the rear seat floor side.

[0106] As a result, the airflow ratio between the rear passenger side and the rear floor side does not match the set size, making it impossible to obtain the preset rear airflow level.

[0107] Accordingly, under conditions where the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12), as the difference in airflow levels between the front seat blower (40) and the rear seat blower (12) increases, the internal flow path (8a) of the console duct (8) is gradually blocked, thereby reducing the airflow on the console duct (8) side.

[0108] Thus, the excessive increase in air volume on the console duct (8) side and the resulting deviation in the air volume distribution ratio between the console duct (8) side and the rear floor duct (9) side can be compensated for, and as a result, the air volume distribution ratio between the rear passenger side and the rear floor side can be adjusted to a set size.

[0109] Again, referring to FIG. 2, the control unit (30) controls the ON and OFF of the rear seat blower (12) according to the airflow level of the front seat blower (40) and the rear seat blower (12) under rear seat bi-level mode conditions.

[0110] In particular, as described in [Table 3] below, under rear seat bi-level mode conditions, if the airflow level of the front seat blower (40) exceeds the airflow level of the rear seat blower (12) and the difference between the airflow levels of the front seat blower (40) and the rear seat blower (12) is greater than or equal to a preset reference difference, for example, if it is 3 levels or higher, the rear seat blower (12) is configured to be turned off.

[0111] Control of front and rear blowers by airflow level, and rear blower ON / OFF under rear bi-level mode conditions Rear seat blower ON / OFF control Full seat blower airflow level 1st stage 2nd level 3rd stage 4th stage 5th level 6th gear 7th gear 8th gear Rear seat blower airflow level 1st stage ON ON ON OFF OFF OFF OFF OFF 2nd level ON ON ON ON OFF OFF OFF OFF 3rd stage ON ON ON ON ON OFF OFF OFF 4th stage ON ON ON ON ON ON OFF OFF 5th level ON ON ON ON ON ON ON OFF 6th gear ON ON ON ON ON ON ON ON 7th gear ON ON ON ON ON ON ON ON 8th gear ON ON ON ON ON ON ON ON

[0112] The reason for configuring it this way is that under the condition that the air volume level of the front seat blower (40) exceeds the air volume level of the rear seat blower (12), if the first condition that the air volume level of the front seat blower (40) exceeds the air volume level of the rear seat blower (12) and the second condition that the difference between the air volume level of the front seat blower (40) and the air volume level of the rear seat blower (12) is 3 levels or more are satisfied, the air volume on the console duct (8) side is greatly affected by the discharge air volume of the front seat blower (40).

[0113] In particular, when the first and second conditions are satisfied, the discharge air volume on the console duct (8) side can be controlled to a preset air volume using only the discharge air volume of the front seat blower (40) without the operation of the rear seat blower (12).

[0114] Therefore, when the first and second conditions are satisfied, the rear seat blower (12) is turned off, thereby improving the fuel efficiency of the vehicle without reducing the cooling and heating effect of the rear seat area.

[0115] According to the air conditioning device of the present invention having such a configuration, the rear seat console door (20) is installed on the console duct (8) side, and then the rear seat console door (20) and the rear seat mode door (10) are individually controlled through the control unit (30), so the air volume on the rear floor duct (9) side and the air volume on the console duct (8) side can be individually adjusted.

[0116] In addition, since the air flow rate on the rear floor duct (9) side and the air flow rate on the console duct (8) side can be adjusted individually, the air flow rate on the rear floor surface side through the rear floor duct (9) and the air flow rate on the rear passenger side through the console duct (8) can be accurately controlled according to the set size and air flow rate level.

[0117] In addition, the rear seat console door (20) and the rear seat mode door (10) are controlled individually, but since they are controlled in an organically linked manner, when in rear seat bi-level mode, the airflow distribution between the rear floor duct (9) side and the console duct (8) side and each airflow can be accurately controlled to a preset size.

[0118] In addition, in the rear seat by-level mode, the airflow distribution between the rear floor duct (9) side and the console duct (8) side and each airflow can be accurately controlled to a preset size. Therefore, in the rear seat by-level mode, the airflow and airflow level of the rear seat floor side and the rear seat passenger side can be controlled according to the set value, and thereby, the comfort of the rear seat area can be improved.

[0119] In addition, in the rear seat bi-level mode, the rear seat console door (20) and the rear seat mode door (10) are organically linked and controlled according to the airflow level of the front seat blower (40) and the rear seat blower (12), so in the rear seat bi-level mode, the airflow on the rear floor duct (9) side and the airflow on the console duct (8) side can be variably adjusted according to the airflow level of the front seat blower (40) and the rear seat blower (12).

[0120] In addition, in the rear seat bi-level mode, the air volume on the rear floor duct (9) side and the air volume on the console duct (8) side can be variably adjusted according to the air volume level of the front seat blower (40) and the rear seat blower (12), so that the air volume on the rear floor duct (9) side and the air volume on the console duct (8) side can be actively responded to the changes in the air volume on the rear floor duct (9) side and the air volume on the console duct (8) side that occur according to the changes in the air volume level of the front seat blower (40) and the rear seat blower (12) under the rear seat bi-level mode conditions.

[0121] In addition, since it can actively respond to changes in air flow rate on the rear floor duct (9) side and air flow rate on the console duct (8) side that occur due to changes in the air flow rate of the front seat blower (40) and the rear seat blower (12) under rear seat bi-level mode conditions, it can compensate for changes in air flow rate on the rear seat floor side and the rear seat passenger side that occur when the air flow rate of the front seat blower (40) and the rear seat blower (12) changes.

[0122] In addition, since the change in airflow volume between the rear floor and the rear passenger side that occurs when the airflow level of the front blower (40) and the rear blower (12) changes under rear seat bi-level mode conditions can be compensated, the discharge airflow volume between the rear floor and the rear passenger side can be controlled to match the set airflow level regardless of the change in the airflow level of the front blower (40) and the rear blower (12) during rear seat bi-level mode.

[0123] Although preferred embodiments of the present invention have been described illustratively above, the scope of the present invention is not limited to such specific embodiments and can be appropriately modified within the scope described in the claims. Explanation of the symbols

[0124] 1: Cooling Heat Exchanger 1a: Rear Cold Air Passage 3: Heating Heat Exchanger 3a: Hot Air Passage 5: Console Vent 7: Rear Floor Vent 8: Console Duct 8a: Internal Air Flow Path 9: Rear Floor Duct 10: Rear Mode Door 12: Rear Blower 14: HVAC Case 20: Rear Console Door 30: Control Unit 32: Memory Unit 40: Front Blower

Claims

Claim 1 A vehicle air conditioning system comprising a console duct and a rear floor duct that respectively blow discharged air from a front seat blower toward the rear seat passenger side and the floor side, a rear seat mode door that regulates the airflow from the front seat blower toward the console duct and the rear floor duct side, and a rear seat blower installed in the console duct to increase the airflow volume and air pressure of the air blown toward the rear seat passenger side, wherein the rear seat console door installed on the internal flow path of the console duct to regulate the airflow volume of the air blown toward the rear seat passenger side along the console duct;A control unit is included that controls the opening position of the rear seat console door relative to the console duct and the opening position of the rear seat mode door relative to the console duct and the rear floor duct, and blows airflow corresponding to the currently set rear seat air discharge mode and airflow level to the rear seat floor side and the rear seat passenger side, respectively; the rear seat console door is installed on the upstream internal flow path of the rear seat blower within the internal flow path of the console duct; the control unit organically controls the rear seat mode door and the rear seat console door according to the airflow levels of the front seat blower and the rear seat blower when the rear seat air discharge mode is a bi-level mode, so that airflow corresponding to the rear seat bi-level mode and the set airflow level can be blown to the rear seat floor side and the rear seat passenger side, respectively; and the control unit, under the rear seat bi-level mode condition, when the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower A vehicle air conditioning system characterized by, under a condition, controlling the opening position of the rear seat mode door with respect to the rear floor duct and the opening position of the rear seat console door with respect to the console duct to always maintain a preset position, and wherein, under a rear seat bi-level mode condition, when the airflow level of the front seat blower exceeds the airflow level of the rear seat blower, the control unit controls the opening position of the rear seat mode door with respect to the rear floor duct to a position that further closes the rear floor duct in contrast to the condition where the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A vehicle air conditioning device according to claim 1, wherein the control unit controls the opening position of the rear seat mode door in a direction that gradually closes the rear floor duct in inverse proportion to the difference in airflow levels between the front seat blower and the rear seat blower as the difference in airflow levels between the front seat blower and the rear seat blower increases, under rear seat bi-level mode conditions, when the airflow level of the front seat blower exceeds the airflow level of the rear seat blower. Claim 7 A vehicle air conditioning system according to claim 6, wherein the control unit, under rear seat bi-level mode conditions, controls the opening position of the rear seat console door relative to the console duct to a position where the console duct is further closed when the airflow level of the front seat blower exceeds the airflow level of the rear seat blower. Claim 8 A vehicle air conditioning system according to claim 7, wherein the control unit controls the opening position of the rear seat console door in a direction that gradually closes the console duct in inverse proportion to the difference in airflow levels between the front seat blower and the rear seat blower as the difference in airflow levels between the front seat blower and the rear seat blower increases, under rear seat bi-level mode conditions, when the airflow level of the front seat blower exceeds the airflow level of the rear seat blower. Claim 9 A vehicle air conditioning system according to claim 8, wherein the control unit controls the ON and OFF of the rear seat blower according to the airflow level of the front seat blower and the rear seat blower under rear seat bi-level mode conditions. Claim 10 A vehicle air conditioning device according to claim 9, wherein the control unit turns off the rear seat blower only when the condition is satisfied that, under rear seat bi-level mode conditions, the airflow level of the front seat blower exceeds the airflow level of the rear seat blower and the deviation between the airflow levels of the front seat blower and the rear seat blower is greater than or equal to a preset reference deviation. Claim 11 A vehicle air conditioning system according to any one of claims 6 to 10, wherein the control unit controls the opening position of the rear seat mode door relative to the rear floor duct to a position where the rear floor duct is opened to 44% when the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower under rear seat bi-level mode conditions. Claim 12 A vehicle air conditioning system according to any one of claims 6 to 10, wherein the control unit controls the opening position of the rear seat console door relative to the console duct to a position where the console duct is opened to 100% when the airflow level of the front seat blower is less than or equal to the airflow level of the rear seat blower under rear seat bi-level mode conditions. Claim 13 A vehicle air conditioning device characterized in that, in any one of claims 6 to 10, the control unit has a mapping table for the rear seat mode door opening position control value and the rear seat console door opening position control value for each airflow level of the front seat blower and the rear seat blower under rear seat bi-level mode conditions; upon entering the rear seat bi-level mode, the control unit detects the rear seat mode door opening position control value and the rear seat console door opening position control value corresponding to the current airflow level of the front seat blower and the airflow level of the rear seat blower, respectively; and based on the detected rear seat mode door opening position control value and the rear seat console door opening position control value, the control unit variably controls the opening position of the rear seat mode door relative to the rear floor duct and the opening position of the rear seat console door relative to the console duct.

Images