KR102843940B1 - Intake unit of vehicle air conditioner - Google Patents

Abstract

An intake unit of an air conditioner for a vehicle, which operates to introduce only one of indoor and outdoor air or both indoor and outdoor air, is disclosed. The intake unit of the air conditioner for a vehicle according to the present invention is characterized by including an intake duct having an outdoor air inlet and an indoor air inlet at positions spaced apart from each other, a partition element installed inside the intake duct, a first outdoor air inlet passage partitioned to one side of the partition element inside the intake duct by the partition element, a second outdoor air inlet passage partitioned to the other side of the partition element inside the intake duct by the partition element, a first door for opening and closing the first outdoor air inlet passage, and a second door for completely opening one of the second outdoor air inlet passage and the indoor air inlet and completely closing the other.

Description

Intake unit of vehicle air conditioner

The present invention relates to an intake unit of an air conditioner for a vehicle, and more particularly, to an intake unit of an air conditioner for a vehicle that operates to introduce only one of internal air and external air or to introduce both internal air and external air.

Automobiles are equipped with air conditioners for interior heating and cooling, each equipped with an intake unit that draws in air from inside or outside the vehicle. The intake unit typically includes an intake duct with an outside air inlet and an inside air inlet, and an intake door that controls the airflow within the intake duct.

These intake units can be broadly categorized into single and dual types, depending on the number of internal intake doors. The single intake door type is configured so that one intake door can selectively open and close the outside air intake and the inside air intake, while the dual intake door type is configured so that intake doors are placed on each of the outside air intake and the inside air intake to control their opening and closing individually.

FIG. 1 is a cross-sectional view of a conventional dual intake door type intake unit, wherein the conventional dual intake door type intake unit includes a first intake door (20, hereinafter referred to as a 'first door' for convenience of explanation) and a second intake door (34, hereinafter referred to as a 'second door' for convenience of explanation) installed inside an intake duct (10).

The first door (20) is rotatably installed inside the intake duct (10) to open and close a portion of the outside air inlet (12) and the entire inside air inlet (14), and the second door (34) is installed inside the intake duct (10) to open and close the remaining portion of the outside air inlet (12), and one of the inside mode, the outside air mode, and the inside-outside air mode is implemented depending on the rotational positions of the first door (20) and the second door (34).

FIG. 1 illustrates the state or rotational position of the first door and the second door when switched to the internal/external air mode that introduces both internal and external air. In the internal/external air mode, the first door (20) is positioned to completely open the internal air inlet (14) while closing a portion of the external air inlet (12), and the second door (34) is positioned to open the remaining portion (32) of the external air inlet (12).

As shown in Fig. 1, when the two doors (20, 34) are switched to the internal/external air mode, external air is introduced through the remaining part (32) of the external air inlet (12) opened by the second door (34) by the strong suction force resulting from the operation of the blower (60), and internal air is introduced through the internal air inlet (14) completely opened by the first door (20), and the introduced external air and internal air are supplied to the air conditioning unit with foreign substances filtered out through the air filter (40).

In this internal/external air mode, where both internal and external air are introduced into the cabin, some of the external air drawn in through the external air inlet can flow toward the internal air inlet, bypassing the filter and directly entering the cabin, potentially resulting in a backflow phenomenon. This can occur when the pressure of the external air drawn in through the external air inlet significantly increases at high speeds.

This backflow phenomenon can be problematic, as it allows unfiltered outdoor air to flow directly into the room. To prevent this backflow phenomenon, conventional methods have employed a method of separating the paths through which outdoor air flows in and the paths through which indoor air flows in using a partition (36, see Fig. 1) in indoor/outdoor mode. However, this backflow blocking structure has the following problems.

First, there is no problem in the internal/external mode as shown in Fig. 1, but when switched to the internal mode (the first door is at position "B" in the drawing and the second door is switched to a position blocking passage 32 in the drawing), a dead zone (area "Z1" in Fig. 1) where there is no air flow occurs, so there is a problem that the air flow rate is greatly reduced and the driving load of the blower is greatly increased.

In addition, in the betting mode, since the filtration process is concentrated only in the remaining area (the 'Z2' area in Fig. 1) excluding the dead zone (Z1), dust may accumulate concentratedly only in a specific area (the area corresponding to Z2) of the air filter (40), which may cause a large deviation in air intake when switching to the internal/external air mode. In addition, structurally, there is also the difficulty in manufacturing because the bulkhead must be formed inside.

Korean Patent Publication No. 10-2021-0094856 (published on July 30, 2021)

The problem to be solved by the present invention is to provide an intake unit of an air conditioner for a vehicle, which can utilize the entire air introduction surface of an air filter as an effective filtering surface without generating a dead zone where air does not flow when operating in an intake mode, thereby preventing a decrease in air flow, an increase in the driving load of a blower, and a decrease in air conditioning efficiency due to the same.

Another problem to be solved by the present invention is to provide an intake unit of an air conditioner for a vehicle that can prevent a phenomenon in which a portion of the outside air introduced through the outside air inlet flows back toward the inside air inlet in an inside/outside air mode in which both inside and outside air are introduced into the interior, without a separate internal structure such as a bulkhead.

As a means for solving the problem, the present invention

As an intake unit of a vehicle air conditioner that operates to introduce only one of the internal and external air or to introduce both the internal and external air,

An intake duct having an outside air inlet and an inside air inlet located at separate locations;

A dividing element installed inside the above intake duct;

A first outside air inflow passage partitioned on one side of the dividing element inside the intake duct by the dividing element;

A second outside air inflow passage partitioned on the other side of the dividing element inside the intake duct by the dividing element;

A first door for opening and closing the first outside air inlet passage; and

A second door that completely opens one of the second outside air inlet passage and the inside air inlet while completely closing the other;

An intake unit of an air conditioner for a vehicle including a .

In the present invention, the first door can rotate from a first rotational position that completely opens the first outside air inlet passage inside the intake duct to a second rotational position that completely closes the first outside air inlet passage, and the second door can rotate from a third rotational position that completely opens the second outside air inlet passage inside the intake duct while simultaneously closing the inside air inlet port to a fourth rotational position that completely closes the second outside air inlet passage while simultaneously opening the inside air inlet port.

Preferably, when operating in the inside mode, the first door is positioned at the second rotation position and the second door is positioned at the fourth rotation position, when operating in the outside mode, the first door is positioned at the first rotation position and the second door is positioned at the third rotation position, and in the inside/outside mode, the first door is positioned at the first rotation position and the second door is positioned at the fourth rotation position.

In addition, the first door and the second door applied to the present invention may be a dome type door having a dome-shaped closing part.

Preferably, the first door and the second door may be configured to include a pair of fan-shaped side portions each having a rotational axis rotatably connected to the intake duct, and the dome-shaped closing portion interconnecting the curved portions at the ends of each side portion.

Here, a pair of sealing wings may protrude radially outwardly of the door along one edge and the other edge of the dome-shaped closure, and a sealing member may be attached along both edges of the side portion, including the pair of sealing wings.

In particular, the first door may further include a partition wing that divides the air introduction area on the upper side of the air filter into two by coming into contact with the upper surface of the air filter arranged at the lower side of the intake duct at a first rotational position that completely opens the first outside air inlet passage.

In addition, the dividing element applied to the present invention may be configured to include a curved guide surface that guides the rotational movement of the first door, a straight upper contact surface to which the outer sealing blade of the first door is in contact when the first door is positioned at a first rotational position that completely opens the first outside air inlet passage, and a straight lower contact surface to which the inner sealing blade of the first door is in contact when the first door is positioned at a second rotational position that completely closes the first outside air inlet passage.

The above-described partition element applied to the present invention may further include a straight side contact surface on which the inner sealing wing of the second door is in contact when the second door is placed in a fourth rotational position that completely closes the second outside air inlet passage and simultaneously completely opens the inside air inlet.

According to an embodiment of the present invention, a dead zone where air does not flow does not occur at all in the intake mode, and therefore the entire air introduction surface of the air filter can be utilized as an effective filtration surface, and since no dead zone occurs, there is no concern at all about a decrease in the air flow rate in the intake mode or an increase in the driving load of the blower due to it.

In addition, in the indoor/outdoor mode where both indoor and outdoor air are introduced into the room, the phenomenon of some of the outdoor air introduced through the outdoor air inlet flowing back toward the indoor air inlet can be completely prevented without using a separate internal structure such as a fixed baffle. In addition, since the baffle is omitted, the internal configuration is simplified, which is advantageous in terms of product manufacturing.

Fig. 1 is a cross-sectional view of an intake unit of a vehicle air conditioner according to the prior art.
Figure 2 is a cross-sectional view of an intake unit of a vehicle air conditioner according to an embodiment of the present invention.
Figure 3 is an enlarged view of the main part of the present invention, showing the 'C' portion of Figure 2 in an enlarged manner.
Fig. 4 (a) is a perspective view showing a preferred embodiment of the first door applied to the present invention, and Fig. 4 (b) is a cross-sectional view according to another preferred embodiment of the first door.
Figures 5 to 7 are operation status diagrams of an intake unit of a vehicle air conditioner according to an embodiment of the present invention.

Hereinafter, a shoe dust remover according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

The terminology used in the following specification to describe the present invention is used solely to describe specific embodiments and is not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, it should be understood that terms such as “include” or “have” in this specification are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Additionally, while terms such as "first," "second," etc. may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another.

Additionally, terms such as “…part”, “…unit”, “…module”, etc. mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

In describing the present invention with reference to the attached drawings, identical components will be assigned identical reference numerals, and redundant descriptions thereof will be omitted. Furthermore, when describing the present invention, if a detailed description of a related known technology is deemed to unnecessarily obscure the gist of the present invention, such detailed description will be omitted.

FIG. 2 is a cross-sectional view of an intake unit of a vehicle air conditioner according to an embodiment of the present invention.

Referring to FIG. 2, an intake unit (1) of an air conditioner for a vehicle according to an embodiment of the present invention is operable to introduce only one of internal and external air or to introduce both internal and external air, and includes an intake duct (100) that forms the exterior of the unit and has a passage formed therein through which air flows. An external air inlet (110) and an internal air inlet (120) are formed in this intake duct (100).

Air from outside the vehicle (hereinafter referred to as “outside air”) can be introduced into the intake duct (100) through the outside air inlet (110), and air from inside the vehicle (hereinafter referred to as “inside air”) can be introduced into the intake duct (100) through the inside air inlet (120). The outside air inlet (110) and the inside air inlet (120) can be formed to be spaced apart from each other so that no interference in flow occurs between the inside air and the outside air in the inside/outside air mode.

A partition element (200) may be installed inside the intake duct (100). The partition element (200) may be configured like an island in the internal space of the intake duct (100), and a first outside air inflow passage (112) may be defined on one side of the partition element (200) inside the intake duct (100) by the partition element (200), and a second outside air inflow passage (114) may be defined on the other side of the partition element (200) inside the intake duct (100).

The first outside air inlet passage (112) can be opened or closed by the first door (300). And the second outside air inlet passage (114) can be opened or closed by the second door (400). The first door (300) and the second door (400) are rotatably installed inside the intake duct (100), and one of the internal mode, the external mode, and the internal-outdoor mode can be implemented depending on the combination of the rotation states of the first door (300) and the second door (400).

The first door (300) and the second door (400) can independently rotate within a predetermined angular range by two actuators (not shown) that transmit rotational force to each door, thereby controlling the opening and closing of the corresponding passage or inlet. In particular, the second door (400) can be operated within an operating range that allows one of the second outside air inlet passage (114) and the inside air inlet (120) to be completely opened while the other can be completely closed.

That is, the second door (400) can be operated to selectively open and close the second outside air inlet passage (114) and the inside air inlet (120). Accordingly, when the second door (400) rotates to a position where the second outside air inlet passage (114) is completely opened, the inside air inlet (120) is completely closed, and conversely, when the second door (400) rotates to a position where the inside air inlet (120) is completely opened, the second outside air inlet passage (114) is completely closed.

The first door (300) can rotate from a first rotational position that completely opens the first outside air inlet passage (112) to a second rotational position that completely closes the first outside air inlet passage (112) by a dedicated actuator. At this time, the dedicated actuator for the first door (300) may be a motor, and can output rotational force in a forward or reverse direction within a set range under the control of a controller (not shown).

The second door (400) can rotate through a third rotational position where the second outside air inlet passage (114) is completely opened by another dedicated actuator while the inside air inlet (120) is completely closed, and a fourth rotational position where the second outside air inlet passage (114) is completely closed while the inside air inlet (120) is completely opened. At this time, the dedicated actuator for the second door (400) may also be a motor driven under the control of a controller.

When operating in the inside mode, the first door (300) may be placed in the second rotation position and the second door (400) may be placed in the fourth rotation position. When operating in the outside mode, the first door (300) may be placed in the first rotation position and the second door (400) may be placed in the third rotation position. In addition, in the inside/outside mode, the first door (300) may be placed in the first rotation position and the second door (400) may be placed in the fourth rotation position.

We will look at this operating state in more detail later.

FIG. 3 is an enlarged view of a key part of the present invention, which is an enlarged view of the 'C' portion of FIG. 2, and is an enlarged view of a dividing element (200) applied to an intake unit of a vehicle air conditioner according to an embodiment of the present invention.

Referring to FIG. 3, the dividing element (200) applied to the embodiment of the present invention not only divides the outside air intake passage into two (a first outside air intake passage and a second outside air intake passage) inside the intake duct (100) but also functions as a stopper to prevent overstroke so that the first door (300) and the second door (400) that rotate inside the intake duct (100) do not go beyond a predetermined rotation range.

These dividing elements (200) specifically include a curved guide surface (210) and a straight upper contact surface (220). They may also include a straight lower contact surface (230) and a straight side contact surface (240).

The guide surface (210) is formed with a curvature corresponding to the dome-shaped closing portion (320) of the first door (300) described below, so as to maintain a certain gap without interfering with the rotational movement of the first door (300), and the inner surface of the outer sealing wing (330) of the first door (300) can be in close contact with the straight upper contact surface (220) when the first door (300) is placed in the first rotational position where the first outside air inlet passage (112) is completely opened (when the first door is rotated all the way clockwise).

When the first door (300) is placed in the second rotation position that completely closes the first outside air inlet passage (112) (when the first door is rotated all the way counterclockwise), the inner surface of the inner sealing wing (340) of the first door (300) can be pressed against the lower contact surface (230), and when the second door (400) is placed in the fourth rotation position (when the second door is rotated all the way counterclockwise), the outer surface of the inner sealing wing (440) of the second door (400) can be pressed against the side contact surface (240).

Fig. 4 (a) is a perspective view showing a preferred embodiment of the first door applied to the present invention, and Fig. 4 (b) is a cross-sectional view according to another preferred embodiment of the first door.

Referring to (a) of FIG. 4, the first door (300) applied to the embodiment of the present invention may be a dome-type door having a dome-shaped closing portion (320). Specifically, it may include a pair of fan-shaped side portions (310) each having a rotational axis (302) rotatably connected to an intake duct (100), and the dome-type closing portion (320) interconnecting the curved portions at the ends of each side portion (310).

A pair of sealing wings (330, 340) may protrude at a predetermined height toward the radially outer side of the first door (300) along one edge and the other edge of the dome-shaped closure (320), and a sealing member (350) for preventing air leakage may be attached along both edges of the two side portions (310) including the pair of sealing wings (330, 340), as shown in the example of the drawing.

A partition wing (360) may be formed in the first door (300). As shown in FIGS. 6 and 7, the partition wing (360) comes into contact with the upper surface (air introduction surface (510)) of the air filter (500) disposed at the lower portion of the intake duct (100) when the first door (300) is placed in the first rotational position, thereby dividing the air introduction area at the upper portion of the air filter (500) into two.

When the first door (300) is placed in the first rotation position, the partition wing (360) comes into contact with the upper surface (air introduction surface (510)) of the air filter (500) to divide the air introduction area on the upper part of the air filter (500) into two, thereby preventing a phenomenon in which a portion of the outside air introduced from the outside air inlet (110) in the internal/external air mode (see FIG. 7 below) flows back toward the inside air inlet (120).

The partition wing (360) is formed at a predetermined distance from the inner sealing wing (340) among the pair of sealing wings formed along one edge and the other edge of the dome-shaped closure (320), and may be formed at an angle with respect to the dome-shaped closure (320) that can be perpendicular to the upper surface (air introduction surface, 510) of the air filter (500) when the first door (300) is placed in the first rotational position.

As another preferred embodiment, as shown in (b) of FIG. 4, the dome-shaped closure (320) may be configured to include a flow guide surface (322) and one or more rigid reinforcing projections (324) protruding from the flow guide surface (322) toward the radial outer side of the door of FIG. 1 at a predetermined height.

According to this configuration, deformation of the dome-shaped closing portion (320) that may occur in the process of blocking high-pressure outside air during high-speed driving in the inside mode (see FIG. 5 below) can be reliably prevented, and in the inside/outside mode (see FIG. 7), the inside air flowing in through the inside inlet (120) can flow smoothly in a direction toward the air filter (500).

Meanwhile, the second door (400) is identical in overall shape and configuration to the first door (300) described above, except that it does not include a partition wing (360), with only a difference in size. Therefore, a detailed description thereof will be omitted.

Hereinafter, the operating state of the intake unit of the vehicle air conditioner according to the embodiment of the present invention configured as described above will be examined by dividing it into operating modes (inner mode, outer mode, inner/outer air mode).

FIGS. 5 to 7 are drawings showing the operating state of an intake unit of a vehicle air conditioner according to an embodiment of the present invention, and are drawings showing the operating state for each of the internal mode, external mode, and internal/external mode.

First, in the betting mode, as shown in Fig. 5, the first door (300) is placed in the second rotation position where the first outside air inlet passage (112) is completely closed by the driving of the actuator that rotates it. Then, the second door (400) is placed in the fourth rotation position where the second outside air inlet passage (114) is completely closed and the inside air inlet (120) is completely opened by the driving of another actuator that rotates it.

At this time, in the rotation position of the betting mode as shown in FIG. 5, the inner surface of the inner sealing wing (340) of the first door (300) and the outer surface of the outer sealing wing (330) are in close contact with the lower contact surface (230) of the partition element (200) and the first sealing protrusion (102) inside the intake duct (100) on the outside air inlet (110) side, respectively, and the outer surface of the inner sealing wing (440) and the outer sealing wing (430) of the second door (400) are in close contact with the side contact surface (240) of the partition element (200) and the second sealing protrusion (104) on the inside of the intake duct (100).

Due to this, the outside air inlet passage (112, 114) connected to the outside air inlet (110) is completely closed, so that the outside air inlet is blocked, and only the inside air is introduced into the intake duct (100) through the inside air inlet (120) which is open, and is evenly distributed along the flow path indicated by the arrow without being concentrated in a specific location or area, and is introduced into the air filter (500) through the air introduction surface (510) of the air filter (500).

In a conventional configuration such as that shown in Fig. 1, when operating in the betting mode (where the first door is at the "B" position in Fig. 1 and the second door is switched to the position blocking passage 32 in Fig. 1), a dead zone (area 'Z1' in Fig. 1) where air does not flow occurs, which causes a significant decrease in air flow and a significant increase in the driving load of the blower.

On the other hand, according to an embodiment of the present invention, even in the internal combustion engine mode, no dead zone occurs, where air does not flow, and thus the entire air introduction surface (510) of the air filter (500) can be utilized as an effective filtration surface. Furthermore, since no dead zone occurs, there is no concern at all about a decrease in air flow in the internal combustion engine mode or an increase in the operating load of the blower due to such a decrease.

In the following external mode, as shown in Fig. 6, the first door (300) is placed in the first rotation position in which the first external air inlet passage (112) is completely opened by the driving of the actuator that rotates it. In addition, the second door (400) is placed in the third rotation position in which the second external air inlet passage (114) is completely opened and the internal air inlet (120) is completely closed by the driving of another actuator that rotates it.

At this time, in the rotation position of the outside mode as in FIG. 6, the inner surface of the outer sealing wing (330) of the first door (300) is in close contact with the upper contact surface (220) of the partition element (200), and the partition wing (360) is in vertical contact with the upper surface (air introduction surface, 510) of the air filter (500). In addition, the inner sealing wing (440) of the second door (400) is in close contact with the second sealing jaw (104), and the opposite outer sealing wing (430) is in close contact with the third sealing jaw (106) on the air introduction side adjacent to the air filter (500).

According to the rotational states of the first door (300) and the second door (400), in the outside air mode, only outside air is introduced into the intake duct (100) through the outside air inlet (110) and is evenly distributed along the flow path indicated by the arrow without being concentrated in a specific location or area, and is introduced into the air filter (500) through the air introduction surface (510) of the air filter (500).

Finally, in the internal/external mode, as shown in Fig. 7, the first door (300) is placed in the first rotation position where the first external air inlet passage (112) is completely opened by the driving of the actuator that rotates it. Then, the second door (400) is placed in the fourth rotation position where the second external air inlet passage (114) is completely closed and the internal air inlet (120) is completely opened by the driving of another actuator that rotates it.

That is, in the internal/external air mode, only a part of the external air inlet passage is opened (only the first external air inlet passage is opened) and the internal air inlet (120) is completely opened. Therefore, external air and internal air can be simultaneously introduced into the intake duct (100) along the flow path indicated by the arrow through the partially opened external air inlet passage (112) and the completely opened internal air inlet (120) and can be introduced into the air filter (500) via the air introduction surface (510) of the air filter (500).

Here, the partition wing (360) of the first door (300) comes into contact with the upper surface (air introduction surface, 510) of the air filter (500) to divide the air introduction area above the air filter (500) into two (A1, A2), so that the outside air and the inside air can flow toward the air filter (500) without any interference with each other, and the backflow of the outside air (the outside air flowing toward the inside inlet) introduced at a high pressure during high-speed driving can also be completely blocked by the partition wing (360).

That is, the embodiment of the present invention can completely prevent a phenomenon in which a portion of the outside air introduced through the outside air inlet flows back toward the inside air inlet in the inside/outside air mode in which both the inside and outside air are introduced into the room without using a separate internal structure such as a fixed baffle (see Fig. 1), and since the baffle is omitted, the internal configuration is simplified, which is advantageous in terms of product manufacturing.

The detailed description of the present invention above has described only specific embodiments thereof. However, it should be understood that the present invention is not limited to the specific embodiments described in the detailed description, but rather encompasses all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention as defined by the appended claims.

1: Intake unit
110: Outside air inlet
112: First outdoor air inlet passage
114: Second outdoor air inlet passage
120: Betting inlet
200: Splitting factor
210: Guide surface
220: Upper contact surface
230: Lower contact surface
240: Side contact surface
300: Door 1
360: Compartment wing
400: Second Door
500: Air filter

Claims (11)

As an intake unit of a vehicle air conditioner that operates to introduce only one of the internal and external air or to introduce both the internal and external air,
An intake duct having an outside air inlet and an inside air inlet located at separate locations;
A dividing element installed inside the above intake duct;
A first outside air inflow passage partitioned on one side of the dividing element inside the intake duct by the dividing element;
A second outside air inflow passage partitioned on the other side of the dividing element inside the intake duct by the dividing element;
A first door for opening and closing the first outside air inlet passage; and
A second door that completely opens one of the second outside air inlet passage and the inside air inlet while completely closing the other;
Including,
The above division factors are,
A curved guide surface that guides the rotational movement of the first door,
An upper sealing surface on which the outer sealing wing of the first door is in contact when the first door is positioned in the first rotational position that fully opens the first outside air inlet passage,
An intake unit of an air conditioner for a vehicle, comprising a lower sealing surface on which an inner sealing wing of the first door is in contact when the first door is positioned in a second rotational position that completely closes the first outside air inlet passage.
In the first paragraph,
The first door rotates from a first rotational position that completely opens the first outside air inlet passage inside the intake duct to a second rotational position that completely closes the first outside air inlet passage,
An intake unit of an air conditioner for a vehicle, wherein the second door rotates from a third rotational position in which the second outside air intake passage is completely opened within the intake duct while the internal air intake port is completely closed, to a fourth rotational position in which the second outside air intake passage is completely closed while the internal air intake port is completely opened.
In the second paragraph,
An intake unit of an air conditioner for a vehicle, wherein in the betting mode, the first door is positioned at the second rotation position and the second door is positioned at the fourth rotation position.
In the second paragraph,
An intake unit of an air conditioner for a vehicle, wherein in the outside mode, the first door is positioned at the first rotation position and the second door is positioned at the third rotation position.
In the second paragraph,
An intake unit of an air conditioner for a vehicle, wherein the first door is positioned at the first rotation position and the second door is positioned at the fourth rotation position in the internal/external mode.
In the first paragraph,
An intake unit of an air conditioner for a vehicle, wherein the first door and the second door are dome-type doors having a dome-shaped closing part.
In paragraph 6,
The above first and second doors,
A pair of fan-shaped side sections each having a rotating shaft rotatably connected to the intake duct;
An intake unit of an air conditioner for a vehicle, comprising a dome-shaped closure interconnecting the lateral ends of each side section.
In paragraph 7,
A pair of sealing wings protrude radially outwardly from the door along one edge and the other edge of the dome-shaped closure,
An intake unit of an air conditioner for a vehicle, wherein both edges of the side portion, including the pair of sealing wings, are covered with a sealing member.
In paragraph 8,
The above first door,
An intake unit of an air conditioner for a vehicle further comprising a partition wing that divides an air introduction area on the upper side of the air filter into two by coming into contact with the upper surface of the air filter arranged on the lower side of the intake duct at a first rotational position that completely opens the first outside air intake passage.
In the first paragraph,
The above division factors are,
An intake unit of an air conditioner for a vehicle in which the upper contact surface and the lower contact surface are formed in a straight line.
In paragraph 10,
The above division factors are,
An intake unit of an air conditioner for a vehicle further comprising a straight side contact surface on which an inner sealing blade of the second door is in contact when the second door is positioned in a fourth rotational position that completely closes the second outside air inlet passage and simultaneously completely opens the inside air inlet.