Intake door device of vehicle

Abstract

An intake door device for a vehicle according to the disclosed present invention comprises: a door unit for opening and closing an outside air inlet and an inside air inlet into which outside air and inside air of a vehicle are respectively introduced; and a control unit for controlling an opening or closing range of the outside air inlet and the inside air inlet to linearly control a mixing ratio of the outside air and the inside air. According to this configuration, heat control performance in the vehicle can be improved by linearly controlling the mixing ratio of the outside air and the inside air with respect to the vehicle.

Description

Vehicle intake door device

[0001] The present invention relates to an intake door device for a vehicle, and more specifically, to an intake door device for a vehicle capable of linearly controlling the ratio of outside air and inside air intake of the vehicle.

[0002] Generally, air conditioning systems are devices designed to maintain a comfortable indoor environment by controlling the temperature, humidity, and circulation of indoor air. They are primarily applied inside buildings or vehicles to regulate temperature and improve indoor air quality. Such systems are installed in vehicles to maintain the interior at an appropriate temperature or to ensure clear visibility while driving by compensating for temperature and humidity differences between the inside and outside of the vehicle.

[0003] A vehicle air conditioning system cools or heats the vehicle interior by using indoor and outdoor air to cool or heat it through heat exchange, and then supplying it to the vehicle interior. Such a vehicle air conditioning system is equipped with a blower to draw in air from the vehicle interior or exterior, and the blower is equipped with an intake to selectively open or close the inflow of indoor or outdoor air. Meanwhile, as unwanted airflow into the vehicle interior is caused by external air pressure during high-speed driving, there has recently been a continuous demand for effective control of the inflow of outdoor and indoor air while the vehicle is in motion.

[0004] The objective of the present invention is to provide an intake door device for a vehicle that can improve blower performance by linearly controlling the ratio of outside air and inside air intake to the vehicle.

[0005] The intake door device of a vehicle according to the present invention for achieving the above objective includes a door part that opens and closes an outside air inlet and an inside air inlet into which outside air and inside air of the vehicle are respectively introduced, and a control part that controls the opening or closing range of the outside air inlet and the inside air inlet to linearly control the mixing rate of the outside air and the inside air.

[0006] In addition, the control unit can linearly control the mixing rate of the outside air and the inside air.

[0007] Additionally, the door portion may include an intake body in which the outside air inlet and the inside air inlet are formed mutually adjacently through one side, and an outlet for discharging the outside air and the inside air is formed through the other side facing the outside air inlet and the inside air inlet; a first door provided in the intake body to be movable between a first closed position for closing the outside air inlet and a first open position for opening the outside air inlet; a second door provided in the intake body to be movable between a second closed position for closing the inside air inlet and a second open position for opening the inside air inlet; and a variable door provided to be slidable in the longitudinal direction with respect to the second door to vary the closing range of the second door.

[0008] In addition, the movement of the first door may be sliding between the first closed position and the first open position.

[0009] In addition, the movement of the second door may be rotation between the second closed position and the second open position.

[0010] Additionally, the door portion may include a first door slot that extends parallel to the outside air inlet along the inner surface of the intake body between the first closed position and the first open position, into which the first door is slidably inserted, and a connecting link having one end axially fixed to the intake body and the other end connected to the first door, which drives the first door to slide along the first door slot by rotational force.

[0011] In addition, the other end of the above-mentioned connecting link may be axially connected to a guide rail provided in a connecting guide connected to the first door, thereby enabling movement.

[0012] In addition, a second door slot may be provided on the inner surface of the intake body to be axially connected to the variable door, thereby guiding the sliding of the variable door relative to the second door in conjunction with the rotation of the second door.

[0013] Additionally, the intake body is provided with a filter that filters the outside air and the inside air at the outlet, and the second door slot may include a first slot extending in a straight direction with a certain distance from the filter at a position facing the inside air inlet, and a second slot extending in a curved direction from the first slot to face the outside air inlet.

[0014] In addition, a filter is installed in the diameter direction at the discharge port, and the control unit can control the gap between the variable door sliding from the second door and the filter to be constant when the air is introduced in the range of 0% to 60%.

[0015] Additionally, the control unit can control the rotation of the second door so that the internal air is introduced in the range of 0% to 60% while the variable door provided in the second door moves along the first slot, and control the rotation of the second door so that the internal air is introduced in the range of 60% to 100% while the variable door moves along the second slot.

[0016] In addition, the control unit can control the movement of the first and second doors that open and close the outside air inlet and the inside air inlet, respectively, so that the outside air and the inside air are introduced at linear ratios of 100% and 0%, 90% and 10%, 80% and 20%, 20% and 80%, 10% and 90%, and 0% and 100%.

[0017] An intake door device for a vehicle according to another aspect of the present invention comprises: a first door for opening and closing an external air inlet into which external air of the vehicle is introduced; a second door for opening and closing an internal air inlet into which internal air of the vehicle is introduced; a door portion provided with an outlet into which the external air and internal air are discharged; and a control portion that controls the movement of the first door and the second door to block the external air introduced through the external air inlet from entering the internal air inlet, while controlling the mixing rate of the external air and internal air introduced through the external air inlet and the internal air inlet.

[0018] In addition, the control unit can linearly control the mixing rate of the outside air and the inside air.

[0019] Additionally, the door portion includes an intake body provided with an outside air inlet, an inside air inlet, and an outlet, wherein the first door is movable between a first closed position and a first open position that closes and opens the outside air inlet along a first door slot provided in the intake body, and the second door is axially fixed at one end to the intake body so as to rotate between a second closed position and a second open position that closes and opens the inside air inlet, and a variable door is inserted at the other end so as to be slidable in the longitudinal direction so as to vary the radius of rotation, and the second door can provide a partition between the outside air inlet and the inside air inlet according to the rotational position together with the variable door.

[0020] In addition, the movement of the first door may be sliding between the first closed position and the first open position.

[0021] In addition, one end of the first door is axially fixed to the intake body, and the other end slides along the first door slot in conjunction with the rotation of a connecting link that is linked to the first door, and the other end of the connecting link can be axially connected to a guide rail of a connecting guide provided in the first door.

[0022] Additionally, a second door slot is provided on the inner surface of the intake body to be axially connected to the variable door and to guide the sliding of the variable door relative to the second door in conjunction with the rotation of the second door, and the second door slot may include a first slot extending in a straight direction with a certain distance from the discharge port at a position facing the internal air inlet port, and a second slot extending in a curved direction from the first slot to face the external air inlet port.

[0023] Additionally, the control unit can control the rotation of the second door so that the internal air is introduced in the range of 0% to 60% while the variable door provided in the second door moves along the first slot, and control the rotation of the second door so that the internal air is introduced in the range of 60% to 100% while the variable door moves along the second slot.

[0024] In addition, the control unit can control the movement of the first and second doors so that the outside air and inside air are introduced at linear ratios of 100% and 0%, 90% and 10%, 80% and 20%, 20% and 80%, 10% and 90%, and 0% and 100%, respectively.

[0025] According to the present invention having the above configuration, by linearly controlling the mixing rate of outside air and inside air for a vehicle, blower performance can be improved by improving intake efficiency within the vehicle.

[0026] In addition, it is possible to prevent outside air entering through the outside air inlet from flowing back into the vehicle through the inside air inlet, thereby improving the temperature control performance inside the vehicle. In particular, the rotation radius of the second door, which opens and closes the inside air inlet to maintain a certain distance from the outlet through which outside and inside air are discharged, can be slidably adjusted, thus contributing to the improvement of air control efficiency inside the vehicle with a simple structure.

[0027] FIG. 1 is a cross-sectional perspective view schematically illustrating an intake door device of a vehicle according to a preferred embodiment of the present invention.

[0028] FIG. 2 is a schematic cross-sectional view illustrating the operation of controlling the mixing rate of 100% outside air and 0% inside air of an intake door device of a vehicle according to a preferred embodiment of the present invention.

[0029] FIG. 3 is a schematic cross-sectional view illustrating the operation of controlling the mixing rate of 80% outside air and 20% inside air of an intake door device of a vehicle according to a preferred embodiment of the present invention.

[0030] FIG. 4 is a schematic cross-sectional view illustrating the operation of controlling the mixing rate of 50% outside air and 50% inside air of an intake door device of a vehicle according to a preferred embodiment of the present invention.

[0031] FIG. 5 is a schematic cross-sectional view illustrating the operation of controlling the mixing rate of 30% outside air and 70% inside air of an intake door device of a vehicle according to a preferred embodiment of the present invention.

[0032] FIG. 6 is a schematic cross-sectional view illustrating the operation of controlling the mixing rate of outside air 0% and inside air 100% of an intake door device of a vehicle according to a preferred embodiment of the present invention. And,

[0033] FIG. 7 is a graph schematically illustrated to explain the linear control of the outside air and inside air mixing rate by the intake door device of a vehicle according to one embodiment shown in FIG. 1.

[0034] Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. However, the concept of the present invention is not limited to such an embodiment, and the concept of the present invention may be proposed differently by adding, changing, or deleting components constituting the embodiment, and such are also included within the concept of the invention.

[0035]

[0036] Referring to FIG. 1, an intake door device (1) of a vehicle according to a preferred embodiment of the present invention includes a door part (10) and a control part (60).

[0037]

[0038] The door section (10) is provided on the path of outside air (F) entering from the outside of the vehicle and inside air (R) entering from the inside, and opens and closes the outside air inlet (21) and inside air inlet (22) through which the outside air (F) and inside air (R) of the vehicle respectively enter. This door section (10) includes an intake body (20), a first door (30), a second door (40), and a variable door (50).

[0039] An intake body (20) has an external air inlet (21) and an internal air inlet (22) formed through it adjacent to each other on one side, and an outlet (23) through which external air (F) and internal air (R) are discharged is formed through it on the other side facing the external air inlet (21) and the internal air inlet (22). That is, the intake body (20) is positioned on the path of external air (F) and internal air (R) so that external air (F) entering from the outside of the vehicle and internal air (R) entering from the interior can pass through. An external air grille (24) and an internal air grille (25) are installed at the external air inlet (21) and the internal air inlet (22) of the intake body (20), respectively, so that the external air (F) and internal air (R) entering into the intake body (20) can be filtered.

[0040] Additionally, a filter (26) (see FIG. 2) is provided in the diameter direction of the outlet (23) of the intake body (20) to filter outside air (F) and inside air (R). The filter (26) is installed in the outlet (23) with an area that can cover the outlet (23), thereby filtering the outside air (F) and inside air (R) passing through the outlet (23).

[0041] Meanwhile, although not described in detail, the intake body (20) may be connected to a blower (not shown) that induces the inflow of outside air (F) and inside air (R) by having a predetermined suction means such as an impeller.

[0042] The first door (30) is provided in the intake body (20) so as to be slidable between a first closed position and a first open position that closes and opens the outside air inlet (21). This first door (30) is provided in the shape of a plate having curvature and preferably has an area sufficient to cover the outside air inlet (21). As shown in FIGS. 1 and 2, the sliding of the first door (30) between the first closed position and the first open position is guided by a first door slot (31) and a connecting link (32).

[0043] The first door slot (31) extends parallel to the outside air inlet (21) along the inner surface of the intake body (20) between the first closed position and the first open position of the first door (30), and a part of the first door (30) is inserted therein. Although not shown in detail, the first door slot (31) is provided as a pair on the inner surface of the intake body (20) facing each other with the outside air inlet (21) in between, and both ends of the first door (30) are inserted into this pair of first door slots (31) to guide the sliding movement. Here, the extended length of the first door slot (31) may correspond to the sliding trajectory between the first closed position and the first open position of the first door (30).

[0044] One end of the connecting link (32) is axially fixed to the intake body (20) and the other end is connected to the first door (30), so that the first door (30) is driven to slide along the first door slot (31) by rotational force. This connecting link (32) provides a driving force that slides the first door (30) between the first closed position and the first open position depending on the rotational position. Meanwhile, a connecting guide (33) is provided between the first door (30) and the other end of the connecting link (32), and a guide rail (36) is formed through the connecting guide (33) for a predetermined length, to which a second link shaft (35), which is axially connected to the other end of the connecting link (32), is movably connected.

[0045] In summary, the connecting link (32) rotates around the first link axis (34) to slide the first door (30) to correspond to the radius of rotation. At this time, the second link axis (35) of the connecting link (32) slides along the guide rail (36) of the connecting guide (33), thereby allowing the radius of rotation of the connecting link (32), which rotates around the first link axis (34), to be varied. That is, the guide rail (36) of the connecting guide (33) provides a range of movement for the connecting link (32) equal to the gap between the first door (30) and the connecting link (32) and the center of rotation. As a result, the position of the center of rotation for the sliding movement of the first door (30) can be positioned off-center to one side inside the intake body (20) so as not to interfere with the driving range of the second door (40), which will be described later, thus being advantageous for miniaturizing the device.

[0046] The second door (40) is rotatably provided on the intake body (20) and is rotatable between a second closed position and a second open position that closes and opens the internal air inlet (22). One end of the second door (40) is axially fixed to the intake body (20) by a door shaft (41), and the other end is provided as a rotating end (42) that extends longitudinally from the first end and rotates around the door shaft (41). Meanwhile, the second door (40) may have a plate shape having an area sufficient to cover the internal air inlet (22), and the shape of the second door (40) is not limited to the illustrated example.

[0047] The variable door (50) is inserted into the rotating end (42) of the second door (40), and slides inward or outward in the longitudinal direction of the second door (40) to vary the length of the second door (40). That is, the variable door (50) is inserted into or discharged into the interior of the second door (40) through the rotating end (42) of the second door (40) to vary the rotation radius length of the second door (40). By sliding inward or outward of the second door (40) with a width corresponding to the rotating end (42) of the second door (40), the variable door (50) can open and close the internal inlet (22) together with the second door (40).

[0048] Meanwhile, by inserting or discharging the variable door (50) from the second door (40), the gap (G) between the filters (26) provided in the outlet (23) of the intake body (20) is maintained constant when the second door (40) rotates. That is, by varying the rotation radius of the second door (40) with the variable door (50), the external air (F) introduced through the external air inlet (21) by the external air pressure, which is the external pressure outside the vehicle, is prevented from flowing back toward the internal air inlet (22) side when the vehicle is traveling at high speed. To guide the sliding movement of the variable door (50) for blocking such ram air, a second door slot (51) is provided in the intake body (20).

[0049] The second door slot (51) is axially connected to the variable door (50) by a variable shaft (52) and is provided on the inner surface of the intake body (20) to guide the sliding of the variable door (50) relative to the second door (40) in conjunction with the rotation of the second door (40). To this end, the second door slot (51) includes a first slot (53) which is a straight section and a second slot (54) which is a curved section extending in a curved direction from the first slot (53).

[0050] The first slot (53) extends in a straight line with a certain distance between it and the filter (26) provided in the outlet (23) at a position facing the internal air inlet (22). Based on the illustration in FIG. 2, as the filter (26) is installed at an angle from the internal air inlet (22) toward the external air inlet (21) with respect to the outlet (23), the first slot (53) also extends in a straight line at an angle so as to face the filter (26) at a certain distance.

[0051] The second slot (54) extends in a curved direction away from the first slot (53) and the internal air inlet (22). Here, the second slot (54) extends from a position connected to the first slot (53) to a position facing the external air inlet (21), so that the second door (40) rotates along the second slot (54) around the door axis (41) to a position facing the external air inlet (21).

[0052] By inserting the variable shaft (52) of the variable door (50) into the first and second slots (53)(54) of the second door slot (51), the variable door (50) slides from the second door (40) in conjunction with the rotation of the second door (40), thereby adjusting the rotation radius of the second door (40). At this time, as the variable door (50) moves along the first slot (53) and maintains a certain distance (G) from the filter (26), it blocks the outside air (F) that has entered through the outside air inlet (21) from entering through the inside air inlet (22) due to the outside air pressure. That is, the second door (30) and the variable door (50) are positioned like a partition between the outside air inlet (21) and the inside air inlet (22), thereby guiding the discharge direction of the outside air (F) and inside air (R). The operation of varying the rotation radius of the second door (40) by such variable door (50) will be described in more detail later along with the operation of controlling the mixing rate of the outside air (F) and inside air (R).

[0053] For reference, the gap (G) between the variable door (50) and the filter (26), which is maintained by the first slot (53) of the second door slot (51), may be approximately 3 mm.

[0054] The control unit (60) improves the temperature control performance inside the vehicle by linearly controlling the mixing rate of outside air (F) and inside air (R) by adjusting the opening or closing range of the outside air inlet (21) and the inside air inlet (22). The control unit (60) preferably controls the movement of the first and second doors (30) (40) so that the outside air (F) and inside air (R) entering through the outside air inlet (21) and the inside air inlet (22) are mixed at linear ratios of 100% and 0%, 90% and 10%, 80% and 20%, 20% and 80%, 10% and 90%, and 0% and 100%, respectively.

[0055] Additionally, the control unit (60) maintains a constant gap (G) between the second door (40) and the filter (26) to prevent backflow caused by outside air (F) flowing in at a range of 100% to 40% when the inflow rate of the inside air (R) is 0% to 60%. That is, the control unit (60) adjusts the opening range of the inside air inlet (22) by the second door (30) so that the inside air (R) can flow in at a range of 0% to 60% when the variable door (50) connected to the second door (40) moves along the first slot (53) of the second door slot (51). Additionally, the control unit (60) controls the variable door (50) provided in the second door (40) to move along the second slot (54) of the second door slot (51) in the internal air (R) inflow range of 60% to 100%, where the inflow rate of the external air (F) is relatively low. That is, the control unit (60) can adjust the range in which the second door (40) rotates according to the amount of internal air (R) inflow.

[0056]

[0057] The operation of controlling the mixing rate of outside air (F) and inside air (R) of the intake door device (1) of a vehicle according to the present invention having the above configuration will be explained with reference to FIGS. 2 to 6.

[0058] Referring to FIG. 2, a state is illustrated in which the first and second doors (30) (40) are controlled by the control unit (60) so that outside air (F) and inside air (R) are mixed at 100% and 0%, respectively. As shown in FIG. 2, when the connecting link (32) rotates in the S1 direction around the first link shaft (34) axially connected to the intake body (20), the first door (30), which is connected to the connecting link (32) and the second link shaft (35), moves in the S1 direction along the first door slot (31). As a result, the first door (30) is positioned in a first opening position that completely opens the outside air inlet (21) provided in the intake body (20), thereby opening the outside air inlet (21) to 100%.

[0059] Additionally, the control unit (60) positions the second door (40), which faces the internal air inlet (22) of the intake body (20), in a second closed position rotated in the S2 direction to close the internal air inlet (22), thereby closing the internal air inlet (22) 100%. At this time, the variable door (50) slides in the S3 direction from the rotation end (42) of the second door (40), so that the second door (40) can sufficiently cover the internal air inlet (22) and the gap (G) with the filter (26) can be maintained at a constant length. As a result, the outside air (F) introduced from the outside air inlet (21) is not introduced into the internal air inlet (22) but can be discharged through the discharge port (23).

[0060] Referring to FIG. 3, the first and second doors (30) (40) are controlled by the control unit (60) so that outside air (F) and inside air (R) are mixed at 80% and 20%, respectively. As shown in FIG. 3, the connecting link (32) is rotated in the illustrated S4 direction around the first link axis (34) relative to the intake body (20), and the first door (30) connected to the connecting link (32) is also rotated together in the S4 direction. At this time, the first door (30) is rotated to a position where the outside air inlet (21) can be opened 80%.

[0061] Additionally, the control unit (60) controls the second door (40) to rotate in the S5 direction around the door axis (41) so that 20% of the internal air (R) is introduced through the internal air inlet (22) and discharged through the outlet (23). At this time, the variable door (50) slides in the S6 direction from the rotation end (42) of the second door (40) and moves along the first slot (53) of the second door slot (51). As a result, the second door (40) is positioned like a partition between the external air inlet (21) and the internal air inlet (22) together with the variable door (50), thereby guiding the external air (F) to be discharged through the outlet (23) without being introduced into the gap (G) between the variable door (50) and the filter (26).

[0062] Referring to FIG. 4, the first and second doors (30) (40) are controlled by the control unit (60) so that outside air (F) and inside air (R) are introduced into the intake body (20) at mixing rates of 50% and 50%, respectively. As shown in FIG. 4, the connecting link (32) is continuously rotated in the illustrated S4 direction around the first link axis (34) relative to the intake body (20) by the control unit (60). At this time, the second link axis (35) of the connecting link (32) connected to the first door (30) rotates the first door (30) in the S4 direction as its rotation radius is guided along the guide rail (36). The first door (30) is rotated in the S4 direction to a position where the outside air inlet (21) can be opened by 50%.

[0063] Additionally, the control unit (60) continuously rotates the second door (40) around the door axis (41) in the S5 direction so that 50% of the internal air (R) is introduced through the internal air inlet (22) and discharged through the outlet (23). At this time, the variable door (50) moves along the first slot (53) of the second door slot (51) from the rotation end (42) of the second door (40) and slides from the second door (40) in the S3 direction. As a result, the second door (40) is positioned as a partition between the external air inlet (21) and the internal air inlet (22), maintaining a certain distance (G) from the filter (26) with a length extended by the variable door (50).

[0064] Meanwhile, when the second door (40) is guided to rotate along the first slot (53) of the second door slot (51), the inflow rate of the internal air (R) can be controlled to be approximately 0% to 60%. That is, in the range of the inflow rate of the internal air (R) to approximately 0% to 60%, the gap (G) between the filter (26) provided in the outlet (23) and the variable door (50) sliding from the second door (40) is maintained at a constant level. As a result, the mixing rate is linearly controlled by the control unit (60), so that the external air (F) introduced through the external air inlet (21) at an inflow rate of approximately 100% to 40% corresponding to the internal air (R) introduced at approximately 0% to 60% is prevented from flowing back into the gap (G) between the second door (40) and the filter (26).

[0065] Referring to FIG. 5, the first and second doors (30) (40) are controlled by the control unit (60) so that outside air (F) and inside air (R) are mixed and introduced into the intake body (20) at 30% and 70%, respectively. As shown in FIG. 5, the connecting link (32) is continuously rotated in the illustrated S4 direction around the first link shaft (34) relative to the intake body (20) by the control unit (60). At this time, the second link shaft (35) of the connecting link (32), which is connected through the connecting guide (33) of the first door (30), is guided within the guide rail (36) to rotate the first door (30) in the S4 direction. At this time, the first door (30) is rotated to a range where the outside air inlet (21) can be opened by 30%.

[0066] Additionally, the control unit (60) continuously rotates the second door (40) in the S5 direction around the door axis (41) so that 70% of the internal air (R) flows in through the internal air inlet (22) and is discharged through the outlet (23). At this time, the variable door (50) slides from the rotation end (42) of the second door (40) in the S3 direction, moving out of the first slot (53) of the second door slot (51) and into the second slot (54). As a result, the second door (40) is positioned like a partition between the external air inlet (21) and the internal air inlet (22) with a length extended by the variable door (50).

[0067] Referring to FIG. 6, the first and second doors (30) (40) are controlled by the control unit (60) so that outside air (F) and inside air (R) flow into the intake body (20) at 0% and 100%, respectively. As shown in FIG. 6, the connecting link (32) is continuously rotated in the illustrated S4 direction around the first link axis (34) relative to the intake body (20) by the control unit (60), thereby completely closing the outside air inlet (21) by the first door (30) connected to the connecting link (32).

[0068] Additionally, the control unit (60) continuously rotates the second door (40) around the door axis (41) in the S5 direction so that 100% of the internal air (R) flows in through the internal air inlet (22) and is discharged through the outlet (23). At this time, the variable door (50) moves along the second slot (54) of the second door slot (51) from the rotation end (42) of the second door (40), thereby causing the variable door (50) to slide from the second door (40) in the S3 direction. As a result, the second door (40) faces the external air inlet (21) with a length extended by the variable door (50), thereby blocking the external air (F) from flowing into the outlet (23).

[0069] Meanwhile, the section where the inflow of internal air (R) is approximately 60% to 100% is a section where the inflow of external air (F) is 0% to 40%, and the frequency of ram air generation is low. However, in order to maximize the blockage of ram air generation, the variable door (50) of the second door (40) is rotated along the curved second slot (54) of the second door slot (51) to a position facing the external air inlet (21). As a result, the external air (F) entering through the external air inlet (21) is blocked from flowing back toward the internal air inlet (22) by the partition wall, the second door (40), and the variable door (50), and is guided toward the outlet (23) to be discharged.

[0070] Here, the movement of the first door (30) that opens and closes the outside air inlet (21) is applied to the structure of the connecting link (32) connected to the connecting guide (33) of the connecting guide (33), thereby preventing interference between the first and second doors (30) (40) in the space inside the narrow intake body (20).

[0071] As described above, the control unit (60) controls the movement of the first and second doors (30) (40), respectively, provided at the outside air inlet (21) and the inside air inlet (22), thereby linearly controlling the mixing rate according to the inflow of outside air (F) and inside air (R). It can be confirmed that the mixing rate of outside air (F) and inside air (R) is linearly controlled compared to the conventional method, as shown in Table 1 below and the graph in FIG. 7.

[0072] Original Invention Discharge Temperature (°C) Ingredient Mixing Rate (%) Discharge Temperature (°C) Ingredient Mixing Rate (%) Upper Side Lower Side △T (Upper Side - Lower Side) Upper Side Lower Side 10% -7.1 31.0% -17.4 2.5 -19.9 48.2% 56.6% 20% 6.1 63.2% -14.5 10.9 -25.4 412.8% 75.3% 30% 8.8 70.1% -13.0 15.5 -28.4 616.7% 86.7% 40% 11.4 76.4% -11.1 18.4 -29.4 621.5% 93.6% 50% 1 2.378.6%-8.119.0-27.1029.1%95.3%60%12.479.1%1.319.5-18.1853.0%97.0%70%12.879.6%6.519.7-13.1865.7%98.0%80%1584.3%11.319.9-8.5577.5%99.0%90%21.3100.7%15.920.2-4.3187.7%98.9%

[0073]

[0074] As described above, although the present invention has been explained with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the invention as described in the following claims.

Claims

1. A door portion for opening and closing an outside air inlet and an inside air inlet through which outside air and inside air of the vehicle respectively enter; and A control unit that controls the mixing rate of the outside air and the inside air by controlling the opening or closing range of the outside air inlet and the inside air inlet; A vehicle intake door device including 2. In Paragraph 1, The above control unit is an intake door device of a vehicle that linearly controls the mixing rate of the outside air and the inside air.

3. In Paragraph 1, The above door section is, An intake body having the above-mentioned external air inlet and the above-mentioned internal air inlet formed through each other adjacently on one side, and an outlet formed through the other side facing the above-mentioned external air inlet and the above-mentioned internal air inlet for discharging the external air and the internal air; A first door provided in the intake body so as to be movable between a first closed position that closes the above-mentioned outside air inlet and a first open position that opens the above-mentioned outside air inlet; A second door provided in the intake body to be movable between a second closed position that closes the internal air inlet and a second open position that opens the internal air inlet; and A variable door configured to slide longitudinally with respect to the second door, thereby varying the closing range of the second door; A vehicle intake door device including 4. In Paragraph 3, An intake door device of a vehicle in which the movement of the first door is sliding between the first closed position and the first open position.

5. In Paragraph 3, The movement of the second door is rotation between the second closed position and the second open position of the vehicle intake door device.

6. In Paragraph 3, The above door section is, A first door slot extending parallel to the outside air inlet along the inner surface of the intake body between the first closed position and the first open position, into which the first door is slidably inserted; and A connecting link having one end axially fixed to the intake body and the other end connected to the first door, which drives the first door to slide along the first door slot by rotational force; A vehicle intake door device including 7. In Paragraph 6, The other end of the above-mentioned connecting link is axially connected to a guide rail provided in a connecting guide connected to the first door, thereby forming a movable intake door device of a vehicle.

8. In Paragraph 3, An intake door device of a vehicle, wherein a second door slot is provided on the inner surface of the intake body to be axially connected to the variable door, and guides the sliding of the variable door relative to the second door in conjunction with the movement of the second door.

9. In Paragraph 8, The intake body is provided with a filter at the outlet for filtering the outside air and the inside air, The above second door slot is, A first slot extending in a straight direction at a certain distance from the filter at a position facing the above-mentioned internal inlet; and A second slot extending in a curved direction from the first slot to face the outside air inlet; A vehicle intake door device including 10. In Paragraph 3, A filter is installed in the diameter direction at the above-mentioned outlet, and The above control unit controls the gap between the variable door sliding from the second door and the filter to be constant when the above air is introduced in the range of 0% to 60%.

11. In Paragraph 9, The above control unit is, The rotation of the second door is controlled so that while the variable door provided in the second door moves along the first slot, the internal air is introduced in the range of 0% to 60%, and An intake door device of a vehicle that controls the rotation of the second door so that the internal air is introduced in a range of 60% to 100% while the variable door moves along the second slot.

12. In Paragraph 1, The above control unit controls the movement of first and second doors that open and close the outside air inlet and the inside air inlet, respectively, so that the outside air and the inside air are introduced at linear ratios of 100% and 0%, 90% and 10%, 80% and 20%, 20% and 80%, 10% and 90%, and 0% and 100%, respectively, for a vehicle intake door device.

13. A first door for opening and closing an external air inlet for the entry of external air into the vehicle, a second door for opening and closing an internal air inlet for the entry of internal air into the vehicle, and a door portion provided with an outlet for the discharge of the external air and internal air; and A control unit that controls the movement of the first door and the second door to block the outside air flowing into the outside air inlet from flowing into the inside air inlet, while controlling the mixing rate of the outside air and inside air flowing into the outside air inlet and the inside air inlet; A vehicle intake door device including 14. In Paragraph 13, The above control unit is an intake door device of a vehicle that linearly controls the mixing rate of the outside air and the inside air.

15. In Paragraph 13, The above door portion includes an intake body provided with the outside air inlet, the inside air inlet, and the outlet, and The first door is movable between a first closed position and a first open position that closes and opens the outside air inlet along a first door slot provided in the intake body, and One end of the second door is axially fixed to the intake body so as to rotate between a second closed position and a second open position that closes and opens the internal air inlet, and a variable door is inserted at the other end so as to be slidable in the longitudinal direction so as to vary the radius of rotation. The above second door is an intake door device of a vehicle that, together with the above variable door, provides a bulkhead between the outside air inlet and the inside air inlet according to the rotational position.

16. In Paragraph 15, An intake door device of a vehicle in which the movement of the first door is sliding between the first closed position and the first open position.

17. In Paragraph 15, One end of the first door is axially fixed to the intake body, and the other end slides along the first door slot in conjunction with the rotation of a connecting link that is linked to the first door. The other end of the above-mentioned connecting link is axially connected to the guide rail of the connecting guide provided in the first door, in the intake door device of the vehicle.

18. In Paragraph 15, A second door slot is provided on the inner surface of the intake body to be axially connected to the variable door, and guides the sliding of the variable door relative to the second door in conjunction with the rotation of the second door. The above second door slot is, A first slot extending in a straight direction at a position facing the above-mentioned internal inlet, with a certain distance between it and the above-mentioned outlet; and A second slot extending in a curved direction from the first slot to face the outside air inlet; A vehicle intake door device including 19. In Paragraph 18, The above control unit is, The rotation of the second door is controlled so that while the variable door provided in the second door moves along the first slot, the internal air is introduced in the range of 0% to 60%, and An intake door device of a vehicle that controls the rotation of the second door so that the internal air is introduced in a range of 60% to 100% while the variable door moves along the second slot.

20. In Paragraph 13, The above control unit controls the movement of the first and second doors so that the outside air and inside air are introduced at linear ratios of 100% and 0%, 90% and 10%, 80% and 20%, 20% and 80%, 10% and 90%, and 0% and 100%, respectively.

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