KR20220147204A - Air conditioner for vehicle - Google Patents

Abstract

Disclosed is an air conditioning apparatus for a vehicle which minimizes air leaks through a double blocking structure between an upper and a lower flow path and considers assembly to optimize the structure of the double blocking structure. The air conditioning apparatus for a vehicle comprises: an air conditioning case wherein an air flow path therein is divided into an upper flow path and a lower flow path; and a cooling heat exchanger and a heating heat exchanger provided on the air flow path of the air conditioning case. A member with a penetration hole is arranged downstream of the heating heat exchanger in the direction of air flow to allow air passing through the heating heat exchanger to pass therethrough. The member with a penetration hole has a lateral member dividing the upper flow path and the lower flow path. The air conditioning case has a leak prevention means formed to be overlapped with the lateral member to prevent air mixing between the upper flow path and the lower flow path.

Description

Air conditioner for vehicle {AIR CONDITIONER FOR VEHICLE}

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

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

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 divided into an upper flow path and a lower flow path has been developed. 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 two-layer air conditioner effectively removes frost using fresh, low-humidity outdoor air supplied to the upper part by realizing a two-layered 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. At the same time, it provides fresh outside air to the occupants and supplies warm air to the lower part to maintain high heating performance.

Referring to FIG. 1 , the conventional air conditioner 1 for a two-story vehicle includes an air conditioning case 10 . The air conditioning case 10 has an air passage having a predetermined shape therein, and the air passage is divided into an upper passage 14b and a lower passage 14a by a partition wall 40 . A plurality of air outlets are formed at the outlet side of the air conditioning case 10 . The air outlet includes 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 the inlet side of the air conditioning case 10 , and an evaporator 2 and a heater core 20 are provided at regular intervals in the air flow path of the air conditioning case 10 . Outside air flows in and flows into the upper flow path 14b, and the bet air flows in and flows into the lower flow path 14a. A first temp door 11 for controlling the amount of air passing through the heater core 20 and air passing through the heater core 20 is provided in the upper passage 14b, and the heater core is provided in the lower passage 14a. A second temp door 12 for controlling the amount of air passing through 20 and air passing through the heater core 20 is provided.

The air outlet is provided with a defrost door 13a and a face door 13b for controlling 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 controlling the amount of air discharged to the front seat floor vent 18 and a rear seat mode door 13d for adjusting the amount of air discharged to the rear seat floor vent 19 . A bypass door 13e for controlling the communication between the upper passage 14b and the lower passage 14a is provided, so that the bet of the lower passage 14a can flow to the upper passage 14b.

On the other hand, the PTC heater 30 may be provided on the downstream side of the heater core 20 in the air flow direction. The PTC heater 30 generates heat by the application of power to heat the air passing therethrough, and serves as a heating heat source by assisting the heater core 20 . The 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 that is not equipped with a PTC heater, a dummy PTC is mounted at the installation site of the PTC heater for common use of the air conditioning case 10 .

In addition, the conventional air conditioner for a vehicle includes a separator to partition left and right sides of the air conditioning case 10 in the width direction, and a through hole for assembling a PTC heater or a dummy PTC is formed in the separator. In this case, the through hole is formed with a slightly larger tolerance than the PTC heater or the dummy PTC and the upper and lower partition walls dividing the upper and lower flow passages for smooth assembly of the PTC heater or the dummy PTC. For this reason, in the conventional air conditioner for a vehicle, a leak occurs between the upper flow passage and the lower flow passage, and thus the air conditioning performance is deteriorated.

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

In order to solve the problems of the prior art, the present invention provides an air conditioner for a vehicle in which the structure of the double blocking structure is optimized in consideration of assemblyability while minimizing the leakage of air through the double blocking structure between the upper and lower flow passages.

An air conditioner for a vehicle according to the present invention comprises an air conditioning case in which an internal air flow passage is divided into an upper flow passage and a lower flow passage, and a cooling heat exchanger and a heating heat exchanger provided in the air flow passage of the air conditioning case. , a member disposed downstream of the heating heat exchanger in an air flow direction and having a through-hole through which air passing through the heating heat exchanger passes, wherein the member having the through-hole divides the upper flow path and the lower flow path in a transverse direction It includes a member, and the air conditioning case is formed to overlap the lateral member and includes a leak prevention means for preventing air mixing between the upper flow passage and the lower flow passage.

A separator for dividing the internal air flow path of the air conditioning case in a width direction is provided, and the leak preventing means is formed across the air flow path in the left and right air conditioning cases and the separator.

The leak preventing means includes a transverse wall member extending in parallel to a lower portion of the transverse member, and a vertical wall member extending upwardly from an end of the transverse wall member.

The height of the vertical wall member is formed higher than the height of the transverse member.

The transverse member is formed to extend from the member having the through hole toward the heat exchanger for heating, and is integrally provided with the member having the through hole.

The separator has a member having a through hole and an assembly hole penetrating the transverse member in the width direction, and the leak preventing means is formed to extend in the width direction from both sides of the separator, and is formed in the vertical direction and the assembling hole. It is formed to extend so as to overlap in the front-rear direction.

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

The end of the vertical wall member is tapered so that the width becomes narrower toward the top.

The air conditioner for a vehicle according to the present invention can reduce the total amount of air leakage in the vertical direction by double blocking the air leakage between the upper flow path and the lower flow path through the configuration of the leak preventing means. Since it can be integrally injection molded, manufacturing can be facilitated and manufacturing cost can be lowered.

In addition, as the leak prevention means has an "L" cross-sectional shape as a whole, it is possible to efficiently prevent the hot air of the upper flow passage passing through the heater core from leaking to the lower flow passage, and the upper flow passage generated through the minute gaps in the assembly hole. It is possible to effectively prevent leakage between and the lower flow passage.

1 is a side cross-sectional view showing a conventional vehicle air conditioner;
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 part of FIG. 2;
4 is a side cross-sectional view showing an enlarged leak prevention means according to an embodiment of the present invention,
5 is a perspective view showing a member having a through hole according to an embodiment of the present invention;
6 is a perspective view showing a separator and a leak prevention means according to an embodiment of the present invention;
7 is an exploded perspective view of a member having a through hole and a separator according to an 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-rear direction of the air conditioning case, and the protruding direction in the drawing 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 external air to an upper portion and circulates bet air to a lower portion 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 the inlet, and an air outlet is formed at the outlet. The air outlet includes a front seat air outlet for discharging air to the front seat of the vehicle and a rear seat air outlet for discharging air to the rear seat 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 the rear seat air outlet is composed of a console vent 114 .

The plurality of doors are rotatably provided inside the air conditioning case 110 to adjust the opening degree of the air outlet. That is, the door includes a defrost door 121 for controlling the opening degree of the defrost vent 111 , a face door 122 for adjusting the opening degree of the face vent 112 , and a floor for adjusting the opening degree of the floor vent 113 . It is composed of a door 123 and a console door 124 that adjusts 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 made to selectively introduce the bet and the outside air. The inside of the blower unit is partitioned into an outside air flow path through which the bet flows and the outside air flow. The bet air flowing through the air passage of the blower unit is blown to the lower passage 152 of the air conditioning case 110, and the outdoor air flowing through the outdoor air passage of the blower unit is blown into the upper passage 151 of the air conditioning case 110.

The cooling heat exchanger and the heating heat exchanger are sequentially provided in the air flow path of the air conditioning case 110 along the air flow direction. The cooling heat exchanger includes an evaporator 102 that cools air by exchanging refrigerant with air, and the heating heat exchanger includes a heater core 103 that heats air by exchanging cooling water with air. 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 divided into a plurality of air passages, that is, an upper passage 151 and a lower passage 152 by the dividing 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 outdoor 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 the three-zone air conditioning of the front driver's seat, front passenger's seat, and rear seat.

In addition, the air conditioner for a two-story 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 bet air to the lower part for defogging during heating, it effectively removes frost using fresh and low-humidity outside air supplied to the upper part, while providing fresh outside air to the occupants and providing warm air. Supply the bet to the lower part to maintain high heating performance.

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

The upper passage 151 is divided into a warm air passage P2 passing through the heater core 103 and a cold air passage P1 disposed below the warm air passage P2 and bypassing the heater core 103 . In addition, the lower flow passage 152 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. In addition, the lower flow path 152 is divided into a warm air flow path P3 passing through the heater core 103 and a cold air flow path P4 disposed below the warm air flow path P3 and bypassing the heater core 103 . .

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 wind passage P4 includes a rear seat cold wind passage and a front seat cold wind passage. The rear seat cold air flow path is disposed at the center in the width direction of the air conditioning case 110 to blow air toward the front seat of the vehicle, and the front seat cold air flow path is disposed on both sides of the rear seat cold air flow path to blow air toward the rear seat of the vehicle. That is, the rear oil passage is disposed at the central portion in the width direction, and the front oil passage is disposed on both sides of the rear oil passage.

The member 200 having the through hole may be configured as a dummy PTC or a PTC heater that generates heat by application of power. A PTC heater (Positive Temperature Cofficient Heater) heats the air passing through it by generating heat when power is applied. In the case of a vehicle without a PTC heater, the member 200 having a through hole 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 the through-hole is composed of a dummy PTC.

The member 200 having the through hole is disposed downstream of the heater core 103 in the air flow direction, and includes a body 220 and a cover 230 . The cover 230 is assembled by being coupled to one side of the main body 220 in a state in which the main body 220 is inserted into the side surface of the air conditioning case 110 . A plurality of coupling protrusions 222 inserted into the coupling grooves of the air conditioning case 110 are formed on the other side of the main body 220 .

A plurality of through-holes passing through the front-rear direction of the air conditioning case 110 are formed in the body 220 of the member 200 having the through-holes. The through hole allows air that has passed through the heater core 103 to pass therethrough. The member 200 having the through hole includes a transverse member 210 . The transverse member 210 extends in a direction perpendicular to the body 220 of the member 200 having a through hole, that is, in a transverse direction, and partitions the upper flow path 151 and the lower flow path 152 .

On the other hand, the air conditioning case 110 is provided with a leak prevention means (300). The leak prevention means 300 is formed to overlap the transverse member 210 formed in the member 200 having the through hole, and serves to prevent air mixing between the upper flow path 151 and the lower flow path 152 . Through the configuration of the leak prevention means 300, the air leakage between the upper flow path 151 and the lower flow path 152 can be double blocked, thereby reducing the total amount of air leakage in the vertical direction.

In addition, the air conditioning case 110 is provided with a separator 190 in the central portion in the width direction. The separator 190 is formed to extend in the vertical direction, and divides the internal air flow path of the air conditioning case 110 to the left and right in the width direction. The leak prevention means 300 is formed across the air flow path in the left and right air conditioning cases 110 and the separator 190 . In this case, the leak prevention means 300 is integrally formed with the separator 190 and the left and right air conditioning cases 110 . Through this configuration, the separator 190 and the leak prevention means 300 can be integrally injection-molded when the air conditioning case 110 is molded, thereby facilitating manufacturing and lowering the manufacturing cost.

More specifically, the leak prevention means 300 is composed of a transverse wall member 320 and a vertical wall member 310 . The transverse wall member 320 extends in parallel to the lower portion of the transverse member 210 of the member 200 having a through hole. The vertical wall member 310 is bent and extended upwardly from the end of the transverse wall member 320 , and the leak prevention means 300 has an “L”-shaped cross-sectional shape as a whole. Through this configuration, it is possible to effectively prevent the warm air of the upper flow path 151 passing through the heater core 103 from leaking into the lower flow path 152 .

The height h1 of the vertical wall member 310 is higher than the height h2 of the lateral member 210 . Through this configuration, the leak prevention means 300 covers the lateral member 210 in the front-rear direction and the vertical direction of the air conditioning case 110 to overlap the double. On the other hand, it is preferable that the taper 350 is formed so that the width becomes narrower toward the upper part of the vertical wall member 310 . Meanwhile, the vertical wall member 310 is formed to face the heater core insertion hole 301 . Through the configuration of the taper 350 , when the heater core 103 is inserted, interference with the heater core 103 and the leak prevention means 300 facing it can be minimized.

That is, the air in the upper passage 151 passing through the heater core 103 has a strong tendency to flow into the lower passage 152 and receives a high wind pressure in the lower direction. The "L"-shaped leak prevention means 300 fills the gap between the heater core 103 and the transverse member 210 that the transverse member 210 does not cover in the front-rear direction and the vertical direction of the air conditioning case 110 . By overlapping the cover, it is possible to effectively block the air of high wind pressure, which flows from the top to the bottom.

The transverse member 210 extends from the member 200 having the through hole toward the heater core 103 and is integrally provided with the member 200 having the through hole. In addition, assembly holes 198 and 199 are formed in the separator 190 . The assembly holes 198 and 199 are formed to pass through the separator 190 in the width direction of the air conditioning case 110 , and pass through the member 200 and the transverse member 210 having the through hole during assembly. The assembling hole 199 formed in the longitudinal direction passes through the member 200 having the through hole, and the assembling hole 198 formed in the transverse direction passes through the transverse member 210 .

In this case, the assembly holes 198 and 199 are slightly smaller than the member 200 and the transverse member 210 having a through hole for smooth assembly of the member 200 and the transverse member 210 having the through hole. It is formed with a large tolerance. For this reason, a leak may occur between the upper flow path 151 and the lower flow path 152 through the minute gaps of the assembly holes 198 and 199 , and thus the air conditioning performance may be deteriorated. The leak prevention means 300 is formed to extend in the width direction from both sides of the separator 190 . In this case, the link preventing means 300 extends from the separator 190 to the inner walls of the left and right air conditioning cases.

As a result, the leak prevention means 300 is extended to overlap in the vertical and front-rear directions with respect to the assembly holes 198 and 199, and the upper passage 151 through the minute gaps in the assembly holes 198 and 199. It is possible to effectively prevent a leak between the and the lower flow path 152 .

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

100: vehicle air conditioning system
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: partition wall
151: upper flow passage 152: lower flow passage
161: upper temp door 162: lower temp door
190: separator 198,199: assembly hole
200: a member having a through hole
210: transverse member 220: body
230: cover 300: leak prevention means
310: vertical wall member 320: transverse wall member

Claims (8)

An air conditioner for a vehicle, comprising: an air conditioning case in which an internal air flow path is partitioned into an upper flow path and a lower flow path; and a cooling heat exchanger and a heating heat exchanger provided in the air flow path of the air conditioning case,
a member disposed downstream of the heating heat exchanger in the air flow direction and having a through hole through which the air passing through the heating heat exchanger passes;
The member having the through hole is provided with a transverse member dividing the upper flow path and the lower flow path,
The air conditioning case is formed to overlap with the lateral member, and the vehicle air conditioner includes a leak preventing means for preventing air mixing between the upper flow passage and the lower flow passage. The method of claim 1,
A separator for dividing the internal air flow path of the air conditioning case in a width direction is provided,
The leak prevention means is an air conditioner for a vehicle that is formed across the air flow path in the left and right air conditioning cases and the separator. 3. The method according to claim 1 or 2,
The leak prevention means,
A vehicle air conditioner comprising: a transverse wall member extending in parallel to a lower portion of the transverse member; and a vertical wall member extending upwardly from an end of the transverse wall member. 4. The method of claim 3,
The height of the vertical wall member is a vehicle air conditioner, characterized in that formed higher than the height of the lateral member. 3. The method according to claim 1 or 2,
The lateral member is formed to extend from the member having the through hole toward the heat exchanger for heating, and is integrally provided with the member having the through hole. 3. The method of claim 2,
In the separator, a member having a through hole and an assembly hole penetrating the transverse member are formed to pass through in the width direction,
The leak preventing means is formed to extend in the width direction from both sides of the separator, and is formed to extend to overlap the assembly hole in the vertical direction and the front-rear direction. 3. The method 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 the application of power. 4. The method of claim 3,
The end of the vertical wall member is a vehicle air conditioner in which a taper is formed so that the width becomes narrower toward the upper portion.

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