KR20220157054A - Air conditioner for vehicle - Google Patents

Abstract

Disclosed is an air conditioner for a vehicle capable of minimizing a leak of air by improving airtightness performance between an air conditioning case and a dummy PTC in the case of not only a two-zone air conditioner but also a three-zone air conditioner. The air conditioner for a vehicle includes an air conditioning case having an inside divided by a partition into a plurality of air flow paths, and a heat exchanger for cooling and a heat exchanger for heating provided in the air flow paths of the air conditioning case, and performs independent air conditioning for different areas of the interior of the vehicle, wherein the air conditioner includes a member with a through hole, placed in the downstream of the heat exchanger for cooling in an air flowing direction to pass the air having passed through the heat exchanger for cooling, and the member with the through hole includes a plurality of ribs filling a gap with the partition of the air conditioning case to prevent a leak of the air, wherein the plurality of ribs are formed at different heights.

Description

Vehicle air conditioner {AIR CONDITIONER FOR VEHICLE}

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle having a through-hole member made of an electric heater such as a PTC heater or a dummy member that heats air by applying power.

In general, an air conditioner for a vehicle is a device for cooling or heating the interior of a vehicle by heating or cooling air. An air conditioner for a vehicle includes an evaporator, which is a heat exchanger for cooling, and a heater core, which is a heat exchanger for heating, inside an air conditioning case. blow up

In particular, in order to maintain high heating performance while securing defogging performance during heating, a two-layer air conditioner in which the inside of the air conditioning case is separated into an upper flow path and a lower flow path has been developed. Low-humidity and cool outdoor air is effective in removing frost on windows during heating operation in winter, but the result is that the indoor temperature is lowered.

The two-layer flow air conditioner supplies outside air to the upper part of the vehicle for defogging during heating and circulates the inside and outside air to the lower part, thereby effectively removing frost using fresh and low-humidity outside air supplied to the upper part. At the same time, fresh outside air is provided to the occupants, and warm air is supplied to the lower part to maintain high heating performance.

Referring to FIG. 1 , a conventional air conditioner 1 for a two-layer flow vehicle includes an air conditioning case 10 . The air conditioning case 10 has an air passage of a certain shape formed therein, and the air passage is partitioned into an upper passage 14b and a lower passage 14a by a partition wall 40 . A plurality of air outlets are formed on the outlet side of the air conditioning case 10 . The air outlet is composed of a defrost vent (16), a face vent (17), a front seat floor vent (18), and a rear seat floor vent (19).

A blower unit 5 is provided at an inlet side of the air conditioning case 10 , and an evaporator 2 and a heater core 20 are provided at regular intervals in an air flow path of the air conditioning case 10 . Outside air flows into the upper flow passage 14b, and inside air flows into the lower flow passage 14a. The upper passage 14b is provided with a first temp door 11 for controlling the amount of air passing through the heater core 20 and air bypassing the heater core 20, and the lower passage 14a has a heater core A second temp door 12 is provided to control the amount of air passing through the heater core 20 and air bypassing the heater core 20 .

The air discharge port is provided with a defrost door 13a and a face door 13b for adjusting the amount of air discharged to the defrost vent 16 and the face vent 17, respectively. The air outlet is provided with a floor door 13c for adjusting the amount of air discharged to the front seat floor vents 18 and a rear seat mode door 13d for adjusting the amount of air discharged to the rear seat floor vents 19. A bypass door 13e is provided to control communication between the upper flow path 14b and the lower flow path 14a, so that the inside of the lower flow path 14a can flow into the upper flow path 14b.

Meanwhile, a PTC heater 30 may be provided on a downstream side of the heater core 20 in the air flow direction. The PTC heater 30 generates heat when power is applied to heat air passing therethrough, and serves as a heating heat source by assisting the heater core 20 . Such a PTC heater 30 may or may not be provided in the air conditioner according to the specifications of the vehicle. In the case of an air conditioner not equipped with a PTC heater, a dummy PTC is installed in the place where the PTC heater is installed to share the air conditioning case 10.

Therefore, in the conventional vehicle air conditioner, it is necessary to improve the sealing structure of the installation position of the PTC heater in the air conditioning case 10 when the PTC heater is installed or not. If the sealing structure of the PTC heater installation site is weak, cool air flows into the warm air passage due to air leakage or warm air flows into the cold air passage, causing deterioration in air conditioning performance.

Republic of Korea Patent Registration No. 10-1179593 (2012.08.29)

In order to solve such conventional problems, the present invention provides a vehicle air conditioner capable of minimizing air leakage by improving airtight performance between an air conditioning case and a dummy PTC in the case of a 2-zone air conditioner as well as a 3-zone air conditioner. .

An air conditioner for a vehicle according to the present invention includes an air conditioning case whose interior is partitioned into a plurality of air passages by a partition wall, and a heat exchanger for cooling and a heat exchanger for heating provided in the air passage of the air conditioning case. An air conditioner for a vehicle that performs independent air conditioning to different regions, comprising a member having a through hole disposed downstream of a heat exchanger for cooling in an air flow direction and passing air passing through the heat exchanger for cooling, the through hole The member having , but provided with a plurality of ribs to prevent air leakage by filling the gap between the separating wall of the air conditioning case, the plurality of ribs are made of different heights.

The rib has a horizontal separation wall dividing the air flow path vertically and a vertical separation wall dividing the air flow path into left and right sides, and in the member having the through hole, the heights of the horizontal separation wall and the vertical separation wall are different from each other.

The height of the horizontal separation wall is formed higher than the height of the vertical separation wall.

The air flow path of the air conditioning case includes a front oil flow path for blowing air toward the front seat of the vehicle and a rear oil flow path for blowing air toward the rear seat of the vehicle, and the member having the through hole is a front oil flow path for preventing leakage of the front oil flow path. A rib for the rear oil passage and a rib for the rear oil passage to prevent leakage of the rear oil passage, and the rib for the latter oil passage is higher than the rib for the former oil passage so as to be located closer to the sealing surface of the air conditioning case than the rib for the former oil passage made of high

The internal air flow path of the air conditioning case is divided into an upper flow path and a lower flow path, and the rear oil flow path is disposed in the central portion of the lower flow path in the width direction of the air conditioning case, and the front oil flow path is on both sides of the rear oil flow path in the width direction. The rib for the after gas passage is formed at a central portion in the width direction of the lower region to correspond to the after gas passage and extends along the boundary of the after gas passage.

A separator is provided to divide the internal air passage of the air conditioning case in the width direction, and the rib for the front oil passage extends vertically at a central portion in the width direction to correspond to the separator.

The rib is formed on an upstream side of a member having a through hole in an air flow direction.

The rib integrally extends from one surface of a member having a through hole facing the heater core.

The member having the through hole is composed of a dummy PTC or a PTC heater that generates heat when power is applied.

The vehicle air conditioner according to the present invention performs a sealing function in different environments, so it is common to both the type that performs 2-zone independent air-conditioning control of the driver's seat and front passenger seat of the vehicle and the type that performs independent 3-zone air-conditioning control. When a member with a through hole is applied, the ribs can perform stable and efficient sealing in different installation environments.

In particular, when the present invention is applied to a three-zone type air conditioner, the rib for the rear oil passage minimizes the gap with the air conditioning case, thereby minimizing the leakage of air from the front oil passage to the rear oil passage, thereby preventing deterioration in air conditioning performance. can

In addition, leakage of the warm air passing through the heater core to the cold air passage is prevented, and cooling air bypassing the heater core is prevented from leaking to the warm air passage, so that air conditioning performance can be maintained in an optimal state.

1 is a side cross-sectional view showing a conventional air conditioner for a vehicle,
2 is a side cross-sectional view showing an air conditioner for a vehicle according to an embodiment of the present invention;
3 is an enlarged cross-sectional view of a portion of FIG. 2;
4 is a perspective view showing a member having a through hole according to an embodiment of the present invention;
5 is a front view showing a member having a through hole according to an embodiment of the present invention;
6 is a cross-sectional view taken along line AA of FIG. 4;
7 is a front cross-sectional view showing an air flow path of an air conditioning case according to an embodiment of the present invention;
8 is a perspective view showing a member having a through hole according to another embodiment of the present invention.

Hereinafter, the technical configuration of the vehicle air conditioner will be described in detail according to the accompanying drawings. In the following description, the left-right direction in FIG. 2 is the front-back direction of the air conditioning case, and the left-right direction in FIG. 5 is the width direction of the air conditioning case.

2 to 7, the air conditioner for a vehicle according to an embodiment of the present invention supplies outside air to the upper part and circulates the inner air to the lower part in order to improve defogging performance during heating. ) in the form of The vehicle air conditioner includes an air conditioning case 110, a plurality of doors, a blower unit, a heat exchanger for cooling and a heat exchanger for heating, and a member 200 having a through hole.

An air flow path is formed inside the air conditioning case 110, an air inlet is formed at an inlet, and an air outlet is formed at an outlet. The air outlet includes a front seat air outlet for discharging air to the front seats of the vehicle and a rear seat air outlet for discharging air to the rear seats of the vehicle. In addition, the front seat air outlet is composed of a defrost vent 111, a face vent 112, and a floor vent 113, and a rear seat air outlet is composed of a console vent 114.

A plurality of doors are rotatably provided inside the air conditioning case 110 to adjust the opening of the air outlet. That is, the door includes the defrost door 121 for adjusting the opening of the defrost vent 111, the face door 122 for adjusting the opening of the face vent 112, and the floor for adjusting the opening of the floor vent 113. It consists of a door 123 and a console door 124 for adjusting the opening degree of the console vent 114.

The blower unit is provided at the air inlet of the air conditioning case 110 and is configured to selectively introduce indoor and outdoor air. The inside of the blower unit is divided into an internal flow path through which internal air flows and an external air flow path through which external air flows. The air flowing through the inner flow path of the blower unit is blown into the lower flow path 152 of the air conditioning case 110, and the outside air flowing through the outside air flow path of the blower unit is blown through the upper flow path 151 of the air conditioning case 110.

The heat exchanger for cooling and the heat exchanger for heating are sequentially provided in the air flow path of the air conditioning case 110 along the air flow direction. The heat exchanger for cooling consists of an evaporator 102 that cools the air by exchanging heat between the refrigerant and the air, and the heat exchanger for heating includes a heater core 103 that heats the air by exchanging heat with the cooling water. The heat exchanger for heating may be configured in the form of an indoor condenser using a heat pump system in addition to the heater core 103 .

Meanwhile, the inside of the air conditioning case 110 is partitioned into a plurality of air passages, that is, an upper passage 151 and a lower passage 152, by the partition walls 140 and 180. The air introduced into the air passage of the blower unit flows into the lower passage 152 of the air conditioning case 110, and the air introduced into the outside air passage of the blower unit flows into the upper passage 151 of the air conditioning case 110. In addition, the vehicle air conditioner is configured to independently perform air conditioning in different areas of the vehicle interior. That is, it is possible to independently control air conditioning in 3 zones of the front driver's seat, front passenger seat, and rear seat of the vehicle.

In addition, the air conditioner for a two-layer flow vehicle according to the present invention can maintain high heating performance while securing defogging performance during heating. That is, by supplying outside air to the upper part of the vehicle and circulating the bedding to the lower part for defogging during heating, the fresh and low-humidity outside air supplied to the upper part is used to effectively remove frost, while at the same time providing fresh outside air to the occupants and warm The bet is supplied to the lower part to maintain high heating performance.

An upper temp door 161 is provided in the upper passage 151 , and a lower temp door 162 is provided in the lower passage 152 . The upper temp door 161 and the lower temp door 162 are slidably provided between the evaporator 102 and the heater core 103, and air passing through the heater core 103 and bypassing air according to the lifting operation adjust the amount of The floor vent 113 is for discharging air toward the occupant's feet, the console vent 114 is for discharging air to the rear seat of the vehicle, and the defrost vent 111 is for discharging air toward the window side of the vehicle, The face vent 112 is for discharging air to the upper side of the front seat of the vehicle.

The upper flow passage 151 includes a warm air passage P2 passing through the heater core 103 by the upper wall 181 and a cold air passage disposed below the warm air passage P2 and bypassing the heater core 103 ( P1) is partitioned. In addition, the lower oil passage 152 includes a front oil passage 172 for blowing air toward the front seat of the vehicle and a rear oil passage 171 for blowing air toward the rear seat of the vehicle. In addition, the lower flow passage 152 includes the warm air passage P3 passing through the heater core 103 by the lower wall 182 and cold air disposed below the warm air passage P3 and bypassing the heater core 103. A flow path P4 is partitioned off. The upper wall 181 supports the upper end of the heater core 103 and the member 200 having the through hole, and the lower wall 182 supports the lower end of the heater core 103 and the member 200 having the through hole. do.

That is, the cold air passage P1 of the upper passage 151, the warm air passage P2 of the upper passage 151, the warm air passage P3 of the lower passage 152, and the cold air passage P4 of the lower passage 152 are It is formed sequentially from top to bottom. More specifically, the cold air passage P4 includes a rear seat cool air passage and a front seat cool air passage. The rear seat cooling passages are disposed at the central portion in the width direction of the air conditioning case 110 to blow air toward the front seats of the vehicle, and the front seat cooling passages are disposed on both sides of the rear seat cooling passages to blow air toward the rear seats of the vehicle.

In addition, the air conditioning case 110 is partitioned into a plurality of air passages in the width direction by partition walls. That is, the front oil passage 172 and the back oil passage 171 on one side are partitioned by the first partition wall 191, and the front oil passage 172 and the rear oil passage 171 on the other side are partitioned by the second partition wall. (192). The rear oil passage 171 is disposed in the central portion in the width direction, and the front oil passage 172 is disposed on both sides of the rear oil passage 171 .

The member 200 having a through hole may be composed of a dummy PTC or a PTC heater that generates heat when power is applied. A PTC heater (Positive Temperature Cofficient Heater) generates heat by applying power to heat the air passing through it. In the case of a vehicle without a PTC heater, the through-hole member 200 is composed of a dummy PTC made of synthetic resin or the like. Therefore, it is possible to share the air conditioning case 110 in the specification with and without the PTC heater. In this embodiment, the member 200 having a through hole is composed of a dummy PTC.

The member 200 having a through hole is disposed downstream of the heat exchanger for cooling in the air flow direction. That is, the member 200 having a through hole is disposed downstream of the heater core 103 and includes a main body 220 and a cover 210 . The cover 210 is assembled by being coupled to one side of the body 220 in a state where the body 220 is inserted into the side of the air conditioning case 110. A plurality of coupling protrusions 222 inserted into coupling grooves of the air conditioning case 110 are formed on the other side of the main body 220 . On the other hand, it is also possible that the vehicle air conditioner does not include the heater core 103 and is equipped with only the member 200 having a through hole made of a PTC heater.

A plurality of through holes 221 penetrating the front and rear directions of the air conditioning case 110 are formed in the main body 220 of the member 200 having through holes. Air passing through the heater core 103 passes through the through hole 221 . The member 200 having a through hole includes a plurality of ribs 300 . The ribs 300 prevent leakage of air by filling the gap between the air conditioning case 200 and the member 200 having a through hole. In this case, the plurality of ribs 300 have different heights.

In this way, as the plurality of ribs 300 are formed at different heights, each rib performs a sealing function in different environments according to the height. Therefore, when the member 200 having a common through-hole is applied to both the type that performs 2-zone independent air conditioning control of the driver's seat and front passenger seat of the vehicle and the type that performs independent air-conditioning control of 3 zones, different The ribs 300 can perform stable and efficient sealing in the installation environment.

The member 200 having a through hole includes a rib 320 for a front oil passage and a rib 310 for a rear oil passage. The rib 320 for the former oil passage is for preventing leakage into the former oil passage, and the rib 310 for the later petroleum passage is for preventing leakage into the latter oil passage. In addition, the air conditioning case 110 includes a separator 190 at a central portion in the width direction. The separator 190 extends in the vertical direction, and divides the air passage inside the air conditioning case 110 into left and right sides in the width direction.

More specifically, the rib 320 for the front oil passage extends vertically at the central portion in the width direction so as to correspond to the separator 190 . The rib 320 for the front oil passage is disposed at the central portion in the width direction to minimize leakage of left and right air through the gap with the heater core 103 in the width direction. The ribs 320 for the front oil passage are disposed in the upper passage 151 and the lower passage 152, respectively. The rib 320 for all oil passages may perform a sealing function when applied to a two-zone type air conditioner.

Meanwhile, the member 200 having a through hole may further include reinforcing ribs 330 . The reinforcing ribs 330 are disposed on the side of the upper passage 151, and a pair may be provided on both sides of the rib 320 for the front oil passage in the width direction. The reinforcing rib 330 does not perform a separate sealing function, but may perform a function of reinforcing the strength of the member 200 having a through hole made of a relatively thin plate shape. In addition, a transverse rib 230 for sealing with the partition wall 180 is provided at the central portion of the member 200 having a through hole in the vertical direction.

The rib 310 for the rear oil passage is formed at a higher height than the rib 320 for the former oil passage so as to be located closer to the sealing surface of the air conditioning case 110 than the rib 320 for the former oil passage. That is, as shown in FIG. 6 , the protruding height h1 of the rib 310 for the rear oil passage is formed higher than the protruding height h2 of the rib 320 for the front seat passage. Through this configuration, when applied to a three-zone type air conditioner, the rib 310 for the rear oil passage minimizes the gap with the air conditioning case 110 so that the air in the front oil passage 172 flows into the rear oil passage 171. As leakage is minimized, deterioration in air conditioning performance can be prevented.

More specifically, the rib 310 for the rear gas passage is formed in the central portion of the lower region in the width direction to correspond to the rear gas passage 171 and extends along the boundary of the rear gas passage 171 . That is, the area S1 of the rear oil passage 171 is formed in the central portion of the lower oil passage 152 in the width direction, and the rib 310 for the rear oil passage is the boundary of the area S1 of the rear oil passage 171. It is formed on the top, bottom, left, and right to correspond to and takes the shape of a square frame. Therefore, it is possible to perform perfect sealing by preventing air leakage in four directions of upper side, lower side, left side, and right side with respect to the back oil passage 171 .

The ribs 310 and 320 integrally extend from one surface of the member 200 having a through hole facing the heater core 103 . In particular, when the member 200 having a through hole is composed of a dummy PTC, the rib 310 (320) can be integrally injection-molded during molding of the dummy PTC, thereby facilitating manufacturing and reducing the manufacturing cost.

In addition, the ribs 310 and 320 are formed on the upstream side of the member 200 having a through hole in the air flow direction. That is, the ribs 310 and 320 are formed between the heater core 103 and the member 200 having a through hole to prevent the warm air passing through the heater core 103 from leaking toward the cold air passage, The cooling air bypassing the heater core 103 is prevented from leaking toward the warm air passage, so that air conditioning performance can be maintained in an optimal state.

Meanwhile, referring to FIG. 8 , the rib 300 may include a horizontal partition wall 380 dividing the air flow path vertically and a vertical partition wall 390 dividing the air flow path into left and right sides. In this case, in the member 200 having a through hole, the heights of the horizontal separation wall 380 and the vertical separation wall 390 are different from each other. More specifically, the height of the horizontal separation wall 380 is higher than that of the vertical separation wall 390 .

Through this configuration, when the member 200 having a through hole is applied to a three-zone type air conditioner, the vertical separation wall 390 minimizes the gap with the separation wall of the air conditioning case 110 so that the all-pass flow path 172 ) As leakage of air into the back oil passage 171 is minimized, degradation of air conditioning performance can be prevented.

So far, the vehicle air conditioner according to the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and anyone skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection should be determined by the technical spirit of the appended claims.

100: vehicle air conditioner
102: evaporator 103: heater core
110: air conditioning case 111: defrost vent
112: face vent 113: floor vent
114: console vent 121: defrost door
122: face door 123: floor door
124: console door 140, 180: partition wall
151: upper flow path 152: lower flow path
161: upper temp door 162: lower temp door
190: separator 200: member having a through hole
210: cover 220: body
221: through hole 222: coupling protrusion
230: transverse rib 300: ribs
310: rib for rear oil passage 320: rib for front oil passage
330: reinforcement rib

Claims (9)

It includes an air conditioning case whose interior is divided into a plurality of air passages by partition walls, and a heat exchanger for cooling and a heat exchanger for heating provided in the air passages of the air conditioning case, and performs independent air conditioning in different areas of the vehicle interior. In the vehicle air conditioner to do,
A member having a through hole disposed downstream of the cooling heat exchanger in the air flow direction and passing air passing through the cooling heat exchanger,
The member having the through hole includes a plurality of ribs for preventing air leakage by filling a gap between the separating wall of the air conditioning case and the plurality of ribs having different heights. According to claim 1,
The rib has a horizontal separation wall dividing the air flow path up and down and a vertical separation wall dividing the air flow path into left and right sides,
In the member having the through hole, the height of the horizontal separation wall and the vertical separation wall are different from each other. According to claim 2,
A vehicle air conditioner in which the height of the horizontal separation wall is formed higher than the height of the vertical separation wall. According to claim 1,
The air passage of the air conditioning case includes a front seat passage for blowing air toward the front seat of the vehicle and a rear seat passage for blowing air toward the rear seat of the vehicle,
The member having the through hole includes a rib for a front oil passage to prevent leakage into the former oil passage and a rib for a rear oil passage to prevent leakage to the rear oil passage,
The rib for the rear oil passage has a higher height than the rib for the former oil passage so as to be located closer to the sealing surface of the air conditioning case than the rib for the former oil passage. According to claim 4,
The air passage inside the air conditioning case is divided into an upper passage and a lower passage,
The rear oil passage is disposed in the central portion of the lower oil passage in the width direction of the air conditioning case, and the front oil passage is disposed on both sides of the rear oil passage in the width direction,
The rib for the rear oil passage is formed in a central portion of the lower region in the width direction of the lower region to correspond to the rear oil passage and extends along a boundary of the rear oil passage. According to claim 4,
A separator is provided for partitioning an internal air flow path of the air conditioning case in a width direction,
The rib for the front oil passage is formed to extend vertically in the central portion in the width direction so as to correspond to the separator. According to claim 1 or 2,
The rib is formed on an upstream side of a member having a through hole in an air flow direction. According to claim 1 or 2,
The rib is formed integrally extending from one surface of a member having a through hole facing the heater core. According to claim 1 or 2,
The vehicle air conditioner, characterized in that the member having the through hole is composed of a dummy PTC (Dummy PTC) or a PTC heater that generates heat by application of power.

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