KR20210132495A - Blower unit of two layer type air conditioner for vehicle - Google Patents

Abstract

Disclosed is a ventilation unit for a vehicle air conditioner capable of implementing a smart intake mode using only one door, in a ventilation unit having a two-layer structure. Provided is a ventilation unit for a vehicle air conditioner with a two-layer structure having a case in which an indoor air inlet and an outdoor air inlet are formed, and a blower wheel and a blower motor provided in the case, and a first flow path and a second flow path are partitioned to separate the indoor and the outdoor air to be sucked in. The ventilation unit for the vehicle air conditioner with the two-layer structure is provided with a smart intake mode in which some of the outdoor air is constantly introduced in an indoor air mode.

Description

Blower unit of air conditioner for vehicle {BLOWER UNIT OF TWO LAYER TYPE AIR CONDITIONER FOR VEHICLE}

The present invention relates to a ventilation unit of an air conditioner for a vehicle, and more particularly, to an air conditioner having a two-layer structure that can maintain high heating performance while securing defogging performance during heating. It relates to a blower unit of an air conditioner for a vehicle having a two-layer flow structure that selectively sucks.

In general, an air conditioner for a vehicle is a device that heats or cools a room by introducing external air into a room or circulating air in the room to heat or cool it. A heater core or the like is configured, and the air cooled or heated by the evaporator or the heater core is selectively blown to each part of the vehicle interior.

In particular, an air conditioner having a two-layer structure has been developed in order to maintain high heating performance while securing defogging performance during heating. Low-humidity cold outside air is effective to remove frost on windows during heating in winter, but it results in a lower indoor temperature.

The air conditioning system with a two-layer structure realizes a two-layer air flow that supplies outdoor air to the upper part of the vehicle and circulates bet air to the lower part for defogging during heating. While effectively removing it, it provides fresh outside air to the occupants and supplies warm air to the bottom to maintain high heating performance.

1 is a cross-sectional view showing a blower unit of a conventional vehicle air conditioner. Referring to FIG. 1 , the blowing unit of the air conditioner for a two-story vehicle includes a case 10 , an outside air control door 14 , an inside control door 15 , and a blower motor 21 .

The case 10 includes an intake portion and a scroll portion. In the intake portion of the case 10, the bet inlets 12 and 13 for introducing the bet, and the outdoor air inlet 11 for introducing the outside air are formed. The outdoor air control door 14 controls the degree of opening of the outside air inlet 11 and the inside air inlet 12 , and the inside air control door 15 controls the degree of opening of the inside air inlet 13 . An air filter 16 is provided downstream of the outside air control door 14 and the inside control door 15 in the air flow direction.

The scroll part of the case 10 is partitioned into a first flow path 17 and a second flow path 18 . A blower motor 21 is installed under the scroll part. The first flow path 17 is formed above the second flow path 18 , and the outside air flows through the first flow path 17 and the bet air flows through the second flow path 18 . The first blower wheel 19 and the second blower wheel 20 are coupled to the rotation shaft of the blower motor 21 and rotated. The first blower wheel 19 is located in the first flow path 17 , and the second blower wheel 20 is located in the second flow path 18 .

The bet inlet (12, 13) is made up of two, so that the bet is always introduced through one bet inlet (13). The outdoor air introduced through the outdoor air inlet 11 passes through the air filter 16 and then moves downward and is blown into the air conditioning unit through the first flow path 17 . The bet introduced through the bet inlets 12 and 13 passes through the air filter 16 and then bypasses through the flow path at the edge and is blown into the air conditioning unit through the second flow path 18 .

The conventional ventilation unit of the air conditioner for a two-story vehicle has problems in that cost and weight increase as it requires two doors to control the opening degrees of one outdoor air inlet and two indoor air inlets. In addition, in the case of a ventilation unit having a two-layer flow structure, there is a problem that a mode (Smart Intake Mode) for constantly introducing outside air in the betting mode cannot be implemented.

In order to solve the conventional problems, the present invention provides a ventilation unit for a vehicle air conditioner capable of implementing a smart intake mode using only one door in a ventilation unit having a two-layer flow structure.

A blower unit of an air conditioner for a vehicle according to the present invention includes a case in which an inside air inlet and an outside air inlet are formed, a blower wheel and a blower motor provided in the case, and a first flow path and a second flow path to separate the inside air and the outside air for suction. In the ventilation unit of the air conditioner for a vehicle having a two-layer flow structure in which is partitioned, it has a smart intake mode that partially introduces outside air at all times during betting mode.

In the above, one switching door for controlling the inflow of bet and outside air is provided, and the switching door performs slide driving and rotational driving by rotation of the central axis.

In the above, the switching door performs a smart intake function for always introducing some outside air in the betting mode, and also functions as a partition wall dividing the outside air from the betting mode.

In the above, an articulated link for transmitting power by connecting the switching door and the central shaft is provided.

In the above, in the case, a first guide groove for guiding the slide driving of the changeover door and a second guide groove for guiding the slide driving and rotational driving of the changeover door are formed.

In the above, in the slide direction, one side of the switching door is guided by the first guide groove, and the other side is guided by the second guide groove.

In the above, the first guide groove is formed to extend in a streamlined shape along the boundary of the bet inlet in the circumferential direction of the central axis.

In the above, the second guide groove is formed to extend inwardly while extending in a streamlined shape along the boundary of the outdoor air inlet in the circumferential direction of the central axis.

In the above, the second guide groove includes a first section extending along the boundary of the outdoor air inlet to guide the slide driving of the switching door, and a curvature changing section whose curvature is abruptly changed at the end of the first section, and the curvature It consists of a second section extending toward the lower portion of the central axis from the change portion to guide the rotational driving of the changeover door.

In the above, the articulated link is composed of a first link having one side connected to the central axis, and a second link having one side connected to the first link and the other side connected to the switching door.

In the above, a first guide groove for guiding the slide driving of the changeover door and a second guide groove for guiding the slide driving and rotational driving of the changeover door are formed in the case, and the connection point between the second link and the changeover door is first 2 Guided by guide grooves.

In the above, the changeover door moves from one side of the first guide groove to the other side by rotation of the central axis in one direction to adjust the opening degree of the bet inlet and the outdoor air inlet, and the changeover door reaches the end of the other side of the first guide groove. When the central axis is further rotated in one direction, the switching door is rotated along the second guide groove by pivoting the other end point of the first guide groove to adjust the opening degree of the outdoor air inlet.

In the above, in the section in which the conversion door is rotated along the second guide groove, the bet inlet is always fully opened, and when the conversion door is rotated along the second guide groove to completely open the outdoor air inlet, the conversion door divides the outside air and the bet. It functions as a bulkhead.

In the above, the end of the switching door is provided with a bent portion for sealing with the case when the rotation drive.

In the above, a plurality of support portions for sealing the changeover door are formed in the case along the rotational direction of the changeover door when the changeover door is rotationally driven, so that the degree of opening of the outdoor air inlet of the changeover door can be adjusted step by step.

In the above, the bending part is provided with a sealing member that is elastically deformed to perform airtightness when in close contact with the support part, and the sealing member is elastically deformed when a certain force is applied to the central axis to enable rotation of the switching door.

In the above, the bending portion is formed to extend a certain length along the rotational arc when the switching door is rotated.

In the above, the regular bet inlet for always introducing the bet to the case is further formed.

In the above, in the slide driving section of the changeover door, the changeover door adjusts the degree of opening between the indoor air inlet and the outdoor air inlet, and in the rotation driving section of the changeover door, the changeover door opens the outdoor air inlet in a state in which the indoor air inlet is always fully opened. can be adjusted step by step.

A blowing unit of an air conditioner for a vehicle according to another aspect of the present invention includes a case having an inlet and an outside air inlet formed therein, a blower wheel and a blower motor provided in the case, and a first flow path to separate the bet and outside air to be sucked in. In the ventilation unit of a vehicle air conditioner having a two-layer flow structure in which a second flow path is partitioned, one switching door is provided for controlling the inflow of bet and outside air, and the switching door performs slide driving and rotational driving by rotation of a central shaft. carry out

In the blower unit of the air conditioner for a vehicle according to the present invention, both sliding and rotational driving of the switching door may be possible through one switching door and one central shaft. In addition, by optimizing the shapes of the first guide groove and the second guide groove, the package of the case is not increased in the limited space of the case.

In addition, a ventilation unit with a two-layer flow structure can be implemented with one switching door, and this can be effectively prevented through the parallel drive and rotation drive of the switching door, and a two-layer flow structure can be implemented with one door, thereby reducing the cost. can save

1 is a cross-sectional view showing a blower unit of a conventional vehicle air conditioner,
2 is a cross-sectional view illustrating a blowing unit of an air conditioner for a vehicle according to an embodiment of the present invention;
3 is an enlarged cross-sectional view of a part of FIG. 2;
4 is a view showing the outdoor air mode of the ventilation unit of the vehicle air conditioner according to an embodiment of the present invention,
5 is an enlarged cross-sectional view of a part of FIG. 4;
6 is a view showing a betting mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention,
7 is an enlarged cross-sectional view of a part of FIG. 6;
8 is a view showing a first smart intake mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention,
9 is an enlarged cross-sectional view of a part of FIG. 8;
10 is a view showing a second smart intake mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention,
11 is an enlarged cross-sectional view of a part of FIG. 10;
12 is a view showing a two-layer flow mode of the ventilation unit of the air conditioner for a vehicle according to an embodiment of the present invention,
13 is an enlarged cross-sectional view of a part of FIG. 12 .

Hereinafter, the technical configuration of the ventilation unit of the vehicle air conditioner will be described in detail according to the accompanying drawings.

An air conditioner for a vehicle according to an embodiment of the present invention includes a blower unit for blowing in and blowing inside or outside air, and an air conditioning unit for air conditioning the air blown from the blower unit and discharging the air into the interior of the vehicle. The air conditioner for a vehicle is configured to separate internal air from outside air to blow air, and has a two-layer structure that can maintain high heating performance while securing defogging performance during heating.

2 is a cross-sectional view illustrating a blower unit of an air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 3 is an enlarged cross-sectional view of a part of FIG. 2 . In the following description, the left direction in FIG. 2 is "front direction" and the right direction is "rear direction", and the protruding direction in the drawing is "vehicle width direction". These directions are defined for convenience of description, and the directions may be arbitrarily different.

2 and 3 , the blowing unit of the vehicle air conditioner according to an embodiment of the present invention includes a case 110 , a blower wheel, and a blower motor 130 . The blowing unit has a two-layer structure in which the first flow path 121 and the second flow path 122 are partitioned to separate the bet and the outside air for suction. The case 110 has a bet inlet 112 for introducing the bet into the case 110 and an outdoor air inlet 111 for introducing the outside air into the case 110 are formed.

The case 110 includes an intake portion and a scroll portion. The intake part is located on the upper part of the scroll part and has an inside air inlet 112 and an outside air inlet 111 . The scroll unit has a blower motor 130 to blow the air introduced through the intake unit to the air conditioning unit. The blower wheel is coupled to the shaft of the blower motor 130 and rotates to blow air. In addition, an air filter 140 for filtering air passing therethrough is provided on the upper portion of the scroll unit.

The scroll part of the case 110 is partitioned into a first flow path 121 and a second flow path 122 . The first flow path 121 is formed above the second flow path 122 , and the outside air flows through the first flow path 121 and the bet air flows through the second flow path 122 . The blower wheel includes a first blower wheel 131 positioned in the first flow path 121 and a second blower wheel 132 positioned in the second flow path 122 . The first flow path 121 and the second flow path 122 are partitioned by a partition wall formed in the case 110 .

An upper suction port 123 for introducing air into the first flow path 121 and a lower suction port 124 for introducing air into the second flow path 122 are formed in the scroll part of the case 110 . The upper suction port 123 is formed at the upper portion of the first blower wheel 131 , and the lower suction port 124 is formed at the lower portion of the second blower wheel 132 . The outside air introduced through the outdoor air inlet 111 passes through the air filter 140 and directly flows into the first flow path 121 through the upper suction port 123, and the bet introduced through the inside air inlet 112 is the air filter 140. After moving to the lower part through the flow path at the edge, it makes a U-turn and moves to the upper part, and flows into the second flow path 122 through the lower suction port 124 .

The case 110 is further formed with an inlet 113 for regular indoor air. The regular bet inlet 113 is for always introducing the bet, and without a door, the bet is introduced into the regular blowing unit and supplied into the vehicle interior. Improvement of air conditioning performance can be expected by recycling air conditioning wind by constantly introducing some bet air even in outdoor mode through the regular indoor air inlet 113 . The outdoor air inlet 111, the indoor air inlet 112, and the regular indoor air inlet 113 are sequentially arranged in a circular arc shape on the case 110 from the front of the vehicle to the rear.

The blowing unit is provided with one switching door (200). The conversion door 200 functions to control the inflow of bets and outside air. The diverting door 200 is provided between the upstream of the air filter 140 and the inlets in the case 110 . The switching door 200 is driven by the rotation of the central shaft 234 . The central shaft 234 is rotated by being connected to a power source such as an actuator. The changeover door 200 performs slide driving and rotation driving by rotation of the central shaft 234 . A detailed structure for performing both slide and rotation driving through one switching door 200 and one central shaft 234 will be described in detail below.

The conversion door 200 is a dome-type door, and is formed in the shape of a streamlined curved plate. That is, the switching door 200 includes a dome portion 210 bent to a predetermined curvature. The curvature of the dome portion 210 is made to correspond to the curvature of the outdoor air inlet 111 and the indoor air inlet 112 . In addition, the switching door 200 is provided with an articulated link. The articulated link functions to transmit power by connecting between the switching door 200 and the central shaft 234 .

The articulated link is composed of a first link 236 and a second link 235 . One side of the first link 236 is connected to the central axis 234 and the other side is connected to the second link 235 . The second link 235 has one end connected to the first link 236 and the other end connected to the switching door 200 . The first link 236 and the second link 235 are rotatably connected by a shaft 233 . The dome portion 210 of the switching door 200 is provided with a bracket 230 on one side, and the bracket 230 and the second link 235 are rotatably connected.

A first guide groove 240 and a second guide groove 250 are formed in the case 110 . The first guide groove 240 and the second guide groove 250 are formed on both sides of the case 110 in the vehicle width direction. The first guide groove 240 serves to guide the slide driving of the changeover door 200 , and the second guide groove 250 functions to guide the slide driving and rotational driving of the changeover door 200 .

The first guide groove 240 is formed to extend in a streamlined shape along the boundary of the bet inlet 112 in the circumferential direction of the central axis 234 . The second guide groove 250 extends in a streamlined shape along the boundary of the outdoor air inlet 111 in the circumferential direction of the central axis 234 and is formed to extend inward. The second guide groove 250 is formed at the boundary between the outdoor air inlet 111 and the indoor air inlet 112 and lower than the first guide groove 240 . In the circumferential direction of the central axis 234 , the first guide groove 240 and the second guide groove 250 partially overlap at the boundary between the outdoor air inlet 111 and the indoor air inlet 112 .

In more detail, the second guide groove 250 includes a first section 252 , a curvature changer 251 , and a second section 253 . The first section 252 extends along the boundary of the outdoor air inlet 111 to guide the slide driving of the switching door 200 . The curvature changing unit 251 is a section in which the curvature is abruptly changed at the end of the first section 252 . The second section 253 extends from the curvature changing unit 251 toward the lower portion of the central axis 234 to guide the rotational driving of the switching door 200 .

Through this configuration, both the slide driving and rotational driving of the changeover door 200 through one changeover door 200 and one central shaft 234 may be possible. In addition, by optimizing the shapes of the first guide groove 240 and the second guide groove 250 , the arrangement of the first guide groove 240 and the second guide groove 250 in the limited space of the case 110 can be efficiently performed. be configurable.

That is, the second guide groove 250 has a shape in which a straight section is changed from a substantially “<” shape to a streamlined shape. Therefore, when the switching door 200 is guided to the first section 252, which is the upper curved section, slide driving, and when guided to the second section 253, which is the lower curved section, the curvature changing section 251 is the starting point. to drive rotation. While these two types of driving are possible, the second guide groove 250 is formed in the circumferential direction of the central axis 234 , so it is not necessary to expand the package of the blowing unit case 110 .

One side of the switching door 200 in the sliding direction is guided by the first guide groove 240 , and the other side of the switching door 200 in the sliding direction is guided by the second guide groove 250 . That is, a first pin 231 is provided on one side of the switching door 200 , and the first pin 231 is connected to the first guide groove 240 . When the central shaft 234 is rotated in one direction, the first pin 231 slides along the first guide groove 240 and the switching door 200 connected by the link is slide driven.

In addition, the connection point of the second link 235 and the switching door 200 is guided by the second guide groove (250). That is, the second pin 232 is provided at the connection point between the second link 235 and the switching door 200 , and the second pin 232 is connected to the second guide groove 250 . When the central shaft 234 is rotated in one direction, the second pin 232 slides along the second guide groove 250 and the switching door 200 connected by the link is slide driven or rotationally driven.

The switching door 200 adjusts the opening degree of the inside air inlet 112 and the outside air inlet 111 while moving from one side of the first guide groove 240 to the other side by rotation of the central shaft 234 in one direction. In this case, one side of the first guide groove 240 is the right side of FIG. 3 and the other side is the left side. In addition, the one-way rotation of the central axis 234 is counterclockwise.

When the central shaft 234 is further rotated in one direction while the switching door 200 has reached the other end of the first guide groove 240 , the switching door 200 is the other end point of the first guide groove 240 . The degree of opening of the outdoor air inlet 111 is adjusted while being rotated along the second guide groove 250 as a pivot.

In the section in which the switching door 200 is rotated along the second guide groove 250 , the bet inlet 112 is always completely open. In addition, when the switching door 200 is rotated along the second guide groove 250 to completely open the outdoor air inlet 111, the switching door 200 functions as a partition wall dividing the outside air and the inside air. Through this configuration, it is possible to implement a ventilation unit having a two-layer flow structure with one switching door 200 .

The blower unit of the air conditioner for a vehicle according to an embodiment of the present invention has various air conditioning modes. The air conditioning mode includes an outdoor air mode, a betting mode, and a double laminar flow mode. In addition, the air conditioning mode is provided with a smart intake mode (Smart Intake Mode). The smart intake mode is a mode in which a portion of outside air is constantly introduced in the betting mode.

The betting mode has the advantage of improving the air conditioning performance by recycling the air conditioning wind in the vehicle interior and using it as the air to be air-conditioned, and the outdoor air mode has the advantage of introducing fresh air from the outside into the interior of the vehicle and supplying it to the interior of the vehicle . The smart intake mode can take advantage of both air conditioning performance and fresh air supply by supplying outside air to the interior of some vehicles during betting mode.

In the blower unit of the vehicle air conditioner according to an embodiment of the present invention, the switching door 200 does not simply slide or simply rotate. That is, in the blower unit of the vehicle air conditioner according to an embodiment of the present invention, the switch door 200 performs both a slide drive and a rotation drive.

For this reason, by implementing the smart intake mode in the rotation driving section of the switching door 200, the outside air flowing into the outside air inlet 111 of the switching door 200 directly flows back into the vehicle interior through the indoor air inlet 112. prevent. In addition, the switching door 200 performs a smart intake function for constantly introducing some outside air in the betting mode, and also performs a partition wall function for partitioning the outside air from the betting mode.

That is, in the ventilation unit having a two-layer structure, ram air flows into the interior of the vehicle when the outside air is changed and adversely affects the heating performance, but the ventilation unit of the vehicle air conditioner according to an embodiment of the present invention has a switching door ( 200) to effectively prevent this through the parallel drive of the slide drive and the rotation drive. In addition, it is possible to implement a two-layer flow structure with one door, thereby reducing the cost.

On the other hand, in the slide driving section of the switching door 200 , the switching door 200 adjusts the opening degree between the inside air inlet 112 and the outside air inlet 111 . In addition, in the rotation driving section of the switching door 200, the switching door 200 can adjust the opening degree of the outdoor air inlet 111 step by step in a state in which the indoor air inlet 112 is always fully opened. Through this configuration, it is possible to effectively control the ratio between the bet and the outside air in the smart intake mode, so that more detailed air conditioning control is possible.

More specifically, the switching door 200 is provided with a bent portion (220). The bent part 220 is formed by bending the end of the switching door 200 by approximately 90°. The bent part 220 is formed for sealing with the case 110 when the switching door 200 is rotated. In addition, a sealing member 221 is provided in the bent portion 220 . The sealing member 221 is elastically deformed when in close contact with the support part 220 to perform airtightness between the switching door 200 and the case 110 .

In addition, a plurality of support parts 119 and 118 are formed in the case 110 . The support parts 119 and 118 perform sealing with the switching door 200 when the switching door 200 is rotationally driven. A plurality of support parts 119 and 118 are formed in the case 110 along the rotational direction of the switching door 200 , so that the degree of opening of the outdoor air inlet 111 of the switching door 200 can be adjusted in stages.

Meanwhile, a first partition wall portion 117 and a second partition wall portion 116 are formed in the case 110 . The first partition 117 is formed on the upstream side of the air filter 140 to partition the indoor air inlet 112 and the regular indoor air inlet 113. When the bet inlet 112 is opened and closed through the first partition 117, the bet can be always introduced through the regular bet inlet 113. The second partition wall part 116 is formed on the downstream side of the air filter 140 to partition the outside air and the inside air to move to the first flow path 121 and the second flow path 122 , respectively.

One support part 119 is in close contact with the sealing member 221 formed in the bending part 220 of the switching door 200 when the switching door 200 is rotated by pivoting the first pin 231 . In this case, only a part of the outdoor air inlet 111 is opened. The other supporting part 118 is in close contact with the sealing member 221 formed in the bending part 220 of the switching door 200 when the switching door 200 is rotated by pivoting the first pin 231 . In this case, the outdoor air inlet 111 is completely opened.

In addition, the sealing member 221 is elastically deformed when a certain force is applied to the central shaft 234 to enable the rotation of the switching door 200 . That is, in a state in which the sealing member 221 is in close contact with the support part 119 , between the switching door 200 and the case 110 is airtight, and when more than a certain force is applied to the central shaft 234 , the switching door 200 and The airtight state between the case 110 is released and the switching door 200 starts to rotate. Through this configuration, the step-by-step rotational driving of the switching door 200 is possible.

The bending portion 220 is formed to extend a predetermined length along a rotational arc when the switching door 200 is rotated. In this case, it is preferable that the intermediate support part 119 is also formed to extend a certain length along the extension direction of the bent part 220 . Through this configuration, by forming only one support part 119, it becomes possible to fine-tune the ratio of outside air and bet in the smart intake mode.

That is, when one side of the bending part 220 of the switching door 200 is brought into close contact with the support part 119, and when the switching door 200 is rotated a little more to bring the other side of the bending part 220 into close contact with the support part 119, The degree of opening of the outdoor air inlet 111 can be controlled differently. In this case, in the latter case, the outdoor air inlet 111 may be slightly more open.

Meanwhile, FIG. 4 is a view showing the outdoor air mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 5 is an enlarged cross-sectional view of a part of FIG. 4 .

4 and 5 , in the outdoor air mode, 75% of the outdoor air and 25% of the bet are introduced. In this case, 25% of the bet is introduced through the regular bet inlet 113 . The articulated link is in a state of maximum rotation clockwise about the central axis 234 , and the first pin 231 is located at the rear end of the first guide groove 240 . The second pin 232 is located at the rear end of the first section 252 of the second guide groove 250 .

The conversion door 200 completely closes the inside air inlet 112 and completely opens the outdoor air inlet 111 . The bet flowing into the regular indoor air inlet 113 moves to the second flow path 122 through the lower suction port 124, and the outside air flowing into the outdoor air inlet 111 through the upper suction port 123 through the first flow path 121 move to

6 is a view showing a betting mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 7 is an enlarged cross-sectional view of a part of FIG. 6 .

6 and 7 , in the betting mode, 0% of the outside air and 100% of the bet are introduced. The articulated link is rotated counterclockwise about the central axis 234 , the first pin 231 slides forward along the first guide groove 240 , and the second pin 232 is the second guide It slides forward along the first section 252 of the groove 250 and is located in the curvature changing part 251 .

The conversion door 200 completely closes the outdoor air inlet 111 and completely opens the indoor air inlet 112 . The bet introduced into the bet inlet 112 and the regular bet inlet 113 moves to the second flow path 122 through the lower suction port 124 .

8 is a view showing a first smart intake mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 9 is an enlarged cross-sectional view of a part of FIG. 8 .

8 and 9 , in the first smart intake mode, 15% of the outside air and 85% of the bet are introduced. The articulated link is rotated counterclockwise around the central axis 234 , and the first pin 231 is caught at the front end of the first guide groove 240 and cannot slide anymore, and the switching door 200 is the first It is rotated counterclockwise with the pin 231 pivoting. The second pin 232 slides backward along the second section 253 of the second guide groove 250 . The sealing member 221 formed in the bent part 220 of the switching door 200 is in close contact with the support part 119 so that airtightness between the switching door 200 and the case 110 is made. In this case, the rear end of the bent portion 220 and the support portion 119 are in close contact.

The conversion door 200 completely opens the inside air inlet 112 and partially (15%) opens the outdoor air inlet 111 . The bet introduced into the bet inlet 112 and the regular indoor air inlet 113 moves to the second flow path 122 through the lower suction port 124, and the outside air introduced into the outdoor air inlet 111 through the upper suction port 123 It moves to the first flow path 121 .

10 is a view illustrating a second smart intake mode of the blowing unit of the air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 11 is an enlarged cross-sectional view of a part of FIG. 10 .

In the second smart intake mode, 30% of the outside air and 70% of the bet are introduced. The articulated link is rotated counterclockwise around the central axis 234 , and the first pin 231 is caught at the front end of the first guide groove 240 and cannot slide anymore, and the switching door 200 is the first It is rotated counterclockwise with the pin 231 pivoting. The second pin 232 slides backward along the second section 253 of the second guide groove 250 . That is, when more than a certain force is applied to the central shaft 234, the switching door 200 is rotated a little more counterclockwise in the state of the first smart take mode, so that the front end of the bent part 220 and the support part 119 are clings to The sealing member 221 formed in the bent part 220 of the switching door 200 is in close contact with the support part 119 so that airtightness between the switching door 200 and the case 110 is made.

The conversion door 200 fully opens the inside air inlet 112 and partially (30%) opens the outdoor air inlet 111 . The bet introduced into the bet inlet 112 and the regular indoor air inlet 113 moves to the second flow path 122 through the lower suction port 124, and the outside air introduced into the outdoor air inlet 111 through the upper suction port 123 It moves to the first flow path 121 .

12 is a diagram illustrating a two-layer flow mode of a blower unit of an air conditioner for a vehicle according to an embodiment of the present invention, and FIG. 13 is an enlarged cross-sectional view of a part of FIG. 12 .

12 and 13 , in the two-layer flow mode, 50% of the outside air and 50% of the bet are introduced. The articulated link is rotated counterclockwise around the central axis 234 , and the first pin 231 is caught at the front end of the first guide groove 240 and cannot slide anymore, and the switching door 200 is the first It is rotated counterclockwise with the pin 231 pivoting. The second pin 232 slides to the rear end along the second section 253 of the second guide groove 250 . That is, when more than a certain force is applied to the central shaft 234 , the switching door 200 is further rotated counterclockwise in the state of the second smart take mode, and the sealing member formed in the bending portion 220 of the switching door 200 . 221 is in close contact with another support 118 , the airtightness between the switching door 200 and the case 110 is made.

In this case, the switching door 200 acts as a partition wall separating the outside air and the bet. The conversion door 200 completely opens the inside air inlet 112 and completely opens the outdoor air inlet 111 . The bet introduced into the bet inlet 112 and the regular indoor air inlet 113 moves to the second flow path 122 through the lower suction port 124, and the outside air introduced into the outdoor air inlet 111 through the upper suction port 123 It moves to the first flow path 121 .

Up to now, the blower unit of the vehicle air conditioner according to the present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. will be. Accordingly, the true technical protection scope should be determined by the technical spirit of the appended claims.

110: case 111: outdoor air inlet
112: bet inlet 113: regular bet inlet
118,119: support
121: first euro 122: second euro
123: upper intake 124: upper intake
130: blower motor 131: first blower wheel
132: second blower wheel 140: air filter
200: transition door 210: dome part
220: bent portion 240: first guide groove
236: first link 235: second link
250: second guide groove 251: curvature change unit
252: first section 253: second section

Claims (20)

A vehicle air conditioner having a two-layer structure comprising a case having an inlet inlet and an outside air inlet formed therein, a blower wheel and a blower motor provided in the case, and having a first flow path and a second flow path partitioned so as to separate the inside air and the outside air. In the blowing unit,
A ventilation unit of an air conditioner for a vehicle having a smart intake mode that partially introduces outside air at all times during betting mode. The method of claim 1,
One conversion door is provided to control the inflow of bet and outside air,
The switching door is a blower unit of an air conditioner for a vehicle that performs slide driving and rotation driving by rotation of a central shaft. 3. The method of claim 2,
The conversion door is
A blower unit of an air conditioner for a vehicle, characterized in that it performs a smart intake function for always introducing some outside air in the betting mode, and also functions as a partition wall dividing the bet and outside air. 4. The method of claim 2 or 3,
The ventilation unit of the vehicle air conditioner, characterized in that provided with an articulated link for transmitting power by connecting the switching door and the central shaft. 4. The method of claim 2 or 3,
A blower unit for a vehicle air conditioner, characterized in that the case is formed with a first guide groove for guiding the slide driving of the changeover door and a second guide groove for guiding the slide driving and rotational driving of the changeover door. 6. The method of claim 5,
In the slide direction, one side of the switching door is guided by the first guide groove, and the other side is guided by the second guide groove. 6. The method of claim 5,
The first guide groove is a blower unit of an air conditioner for a vehicle, characterized in that it is formed to extend in a streamlined shape along the boundary of the bet inlet in the circumferential direction of the central axis. 6. The method of claim 5,
The second guide groove extends in a streamlined shape along the boundary of the outdoor air inlet in the circumferential direction of the central axis and extends toward the inside. 9. The method of claim 8,
The second guide groove,
A first section extending along the boundary of the outdoor air inlet to guide the slide driving of the switching door;
a curvature changing unit whose curvature is rapidly changed at the end of the first section;
A blower unit for a vehicle air conditioner comprising a second section extending from the curvature changing part toward a lower portion of the central axis to guide rotational driving of the switching door. 5. The method of claim 4,
The articulated link is
A blower unit for a vehicle air conditioner comprising a first link having one side connected to the central axis, and a second link having one side connected to the first link and the other side connected to the switching door. 11. The method of claim 10,
A first guide groove for guiding the slide driving of the changeover door and a second guide groove for guiding the slide driving and rotational driving of the changeover door are formed in the case;
The ventilation unit of the vehicle air conditioner, characterized in that the connection point of the second link and the switching door is guided by a second guide groove. 6. The method of claim 5,
The switching door adjusts the opening degree of the inside air inlet and the outside air inlet while moving from one side of the first guide groove to the other by rotation of the central axis in one direction,
When the central axis is further rotated in one direction while the changeover door reaches the other end of the first guide groove, the changeover door is rotated along the second guide groove by pivoting the other end of the first guide groove to open the outdoor air inlet. The ventilation unit of the vehicle air conditioner that controls the air conditioner. 13. The method of claim 12,
In the section in which the conversion door is rotated along the second guide groove, the bet inlet is always completely open,
When the changeover door is rotated along the second guide groove to completely open the outdoor air inlet, the changeover door functions as a partition wall dividing the outside air from the inside air. 4. The method of claim 2 or 3,
The ventilation unit of the vehicle air conditioner, characterized in that the end of the switching door is provided with a bent portion for sealing with the case when the rotation drive. 15. The method of claim 14,
Blowing of an air conditioner for a vehicle, characterized in that a plurality of support parts for sealing the changeover door are formed in the case along the rotational direction of the changeover door when the changeover door is rotated and the degree of opening of the outdoor air inlet of the changeover door can be adjusted step by step unit. 16. The method of claim 15,
A sealing member that is elastically deformed when in close contact with the support portion of the bent portion to perform airtightness is provided,
The sealing member is elastically deformed when a certain force is applied to the central shaft, and the ventilation unit of the vehicle air conditioner, characterized in that it enables rotation of the switching door. 15. The method of claim 14,
The blower unit of the air conditioner for a vehicle, characterized in that the bent portion is formed to extend a predetermined length along a rotating arc when the switching door is rotated. 4. The method of claim 2 or 3,
The blowing unit of the air conditioner for a vehicle, characterized in that the regular bet inlet for always introducing the bet into the case is further formed. 4. The method of claim 2 or 3,
In the slide driving section of the conversion door, the conversion door controls the opening degree between the indoor air inlet and the outdoor air inlet,
In the rotation driving section of the changeover door, the changeover door is a ventilation unit for a vehicle air conditioner, characterized in that the opening degree of the outdoor air inlet can be adjusted step by step in a state in which the indoor air inlet is always fully opened. A vehicle air conditioner having a two-layer structure comprising a case having an inlet inlet and an outside air inlet formed therein, a blower wheel and a blower motor provided in the case, and having a first flow path and a second flow path partitioned so as to separate the inside air and the outside air. In the blowing unit,
One conversion door is provided to control the inflow of bet and outside air,
The switching door is a blower unit of an air conditioner for a vehicle that performs slide driving and rotation driving by rotation of a central shaft.

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