阅读说明：本技术 车辆用空调装置 (Air conditioner for vehicle ) 是由 徐容殷 金明俊 金兑玩 徐正勋 李钟坤 李泰建 于 2019-08-28 设计创作，主要内容包括：公开了车辆用空调装置,在后座通风口模式时能够执行由后座地板通风口排出空气的泄放功能,将排出口尺寸和门形状最佳化,从而能够调节后座地板泄放量。车辆用空调装置包括：空调壳体,其在内部形成有空气通道；冷却用热交换器及加热用热交换器,它们设于空调壳体的空气通道而与通过它们的空气进行热交换,具备：前座温度调节门,其调节前座冷风通道与热风通道的一部分之间的开度；第1后座温度调节门,其配置于冷却用热交换器与加热用热交换器之间而调节热风通道的另一部分的开度；及后座模式门,其调节后座空气排出口的开度,后座模式门具备阻断流向后座空气排出口的空气流动的后座封闭功能,后座模式门形成有旁通部,以能够将一部分空气泄放。(Disclosed is an air conditioner for a vehicle, which can perform a function of discharging air through a rear seat floor vent in a rear seat vent mode, optimize a discharge port size and a door shape, and adjust a rear seat floor discharge amount. An air conditioning device for a vehicle includes: an air conditioning case having an air passage formed therein; a cooling heat exchanger and a heating heat exchanger which are provided in an air passage of an air conditioning casing and exchange heat with air passing therethrough, the cooling heat exchanger and the heating heat exchanger including: a front seat temperature adjusting door that adjusts an opening degree between a front seat cold air passage and a part of the hot air passage; a 1 st rear seat temperature adjustment door which is disposed between the cooling heat exchanger and the heating heat exchanger and adjusts the opening degree of the other part of the hot air passage; and a rear seat mode door which adjusts the opening degree of the rear seat air outlet, the rear seat mode door has a rear seat sealing function of blocking the air flowing to the rear seat air outlet, and the rear seat mode door is provided with a bypass part for discharging a part of the air.)

1. An air conditioning device for a vehicle, comprising: an air conditioning case (110) in which an air passage is formed; a cooling heat exchanger and a heating heat exchanger which are provided in an air passage of the air conditioning casing (110) and exchange heat with air passing therethrough,

the vehicle air conditioner includes:

a front seat temperature adjustment door (171) that adjusts the degree of opening between a front seat cold air duct (P1) and a part of a hot air duct (P2);

a 1 st rear seat temperature adjustment door (172) that is disposed between the cooling heat exchanger and the heating heat exchanger and adjusts the opening degree of the other part of the hot air duct (P2); and

a rear seat mode door (200) which adjusts the opening degree of the rear seat air outlet,

the rear seat mode door (200) has a rear seat closing function of blocking the flow of air flowing to the rear seat air outlet,

the rear seat module door (200) is formed with a bypass portion to allow a part of air to be discharged.

2. An air conditioning device for a vehicle according to claim 1,

the rear seat module door (200) has a step (230) formed at one end (241).

3. An air conditioning device for a vehicle according to claim 2,

the rear seat model door (200) is formed in a dome shape, a protruding portion (1103) corresponding to the step portion (230) is formed on the air conditioning casing (110), and a relief function is performed through a gap (1104) between the protruding portion (1103) and the step portion (230).

4. An air conditioning device for a vehicle according to claim 3,

the protrusion (1103) allows the rear seat mode door (200) to rotate freely by means of the step (230) of the rear seat mode door (200), and is caught by an end (242) of the rear seat mode door (200) on the opposite side of the step (230) to restrict the rotation of the rear seat mode door (200).

5. An air conditioning device for a vehicle according to claim 3,

the step part (230) extends along the axial direction of the rear seat model door (200) at two sides to form a certain length.

6. An air conditioning device for a vehicle according to claim 1,

the vehicle air conditioner includes a 2 nd rear seat temperature adjustment door (159), the 2 nd rear seat temperature adjustment door (159) being disposed downstream of the heating heat exchanger and adjusting an opening degree between a hot air duct (P2) and a rear seat cold air duct (P3),

the rear seat model door (200) is disposed downstream of the 2 nd rear seat temperature adjustment door (159).

7. An air conditioning device for a vehicle according to claim 1,

in the rear seat vent mode, the rear seat mode door (200) vents a portion of the air through the rear seat floor vent (116).

8. An air conditioning device for a vehicle according to claim 4,

the rear seat cold air duct (P3) is communicated with the rear seat floor vent (116) and the rear seat face blowing vent (115) through a communication port (1102), the rear seat floor vent (116) and the rear seat face blowing vent (115) are sequentially formed on the air conditioning casing (110) along the rotation radius of the rear seat model door (200),

the protrusion (1103) is formed below the communication port (1102).

9. An air conditioning device for a vehicle according to claim 4,

in the rear seat vent mode, an end (242) on the opposite side of the step (230) is sealed in close contact with the air conditioning case (110), and an end (241) on the side where the step (230) is formed is positioned on the protrusion (1103), thereby forming a gap (1104) between the protrusion (1103) and the step (230).

10. An air conditioning device for a vehicle according to claim 4,

when in the rear floor mode or the rear closing mode, both the end portion (242) on the opposite side of the stepped portion (230) and the end portion (241) on the side where the stepped portion (230) is formed are in close contact with the air conditioning case (110) and sealed.

11. An air conditioning device for a vehicle according to claim 1,

the rear seat mode door (200) has a rear seat closing function that blocks the flow of air flowing to the rear seat air outlet.

12. An air conditioning device for a vehicle according to claim 2,

when in the rear seat closed mode, the step (230) of the rear seat mode door (200) faces the upper sealing surface of the air conditioning case (110) and blocks the gap between the air conditioning case (110) and the step (230).

13. An air conditioning device for a vehicle, comprising: an air conditioning case (110) in which an air passage is formed; and a cooling heat exchanger and a heating heat exchanger which are provided in an air passage of the air conditioning casing (110) and exchange heat with air passing therethrough,

the air conditioning device for a vehicle is characterized by comprising:

a front seat temperature adjustment door (171) that adjusts the degree of opening between a front seat cold air duct (P1) and a part of a hot air duct (P2);

a 1 st rear seat temperature adjustment door (172) that is disposed between the cooling heat exchanger and the heating heat exchanger and adjusts the opening degree of the other part of the hot air duct (P2); and

a rear seat mode door (200) which adjusts the opening degree of the rear seat air outlet,

the rear seat mode door (200) is configured as a revolving door structure, sealing parts are formed at two ends of a door plate of the rear seat mode door (200), and the height of the sealing part at one side is different from that of the sealing part at the other side.

Technical Field

The present invention relates to an air conditioning device for a vehicle, and more particularly, to an air conditioning device for a vehicle capable of sending conditioned air to a rear seat side in order to perform rear seat air conditioning while performing front seat air conditioning of the vehicle.

Background

In general, an air conditioner for a vehicle is a built-in part of an automobile which is installed to cool or heat an interior of the automobile in summer or winter, to remove frost or the like appearing on a windshield in rainy days or winter, and to secure a visual field in front and rear of a driver. An air conditioner is generally provided with both a heating system and a cooling system, and cools, heats, or ventilates a vehicle interior by selectively introducing outside air or inside air, heating or cooling the air, and then blowing the air into the vehicle interior.

Korean patent laid-open publication No. 1484718 (2015.01.14) discloses an air conditioner for a vehicle, which adjusts the amount of air flowing into the rear seat by controlling the positions of a rear seat temperature adjusting door, a rear seat auxiliary temperature adjusting door, and a rear seat opening/closing door. Fig. 1 is a sectional view showing a conventional air conditioner for a vehicle. As shown in fig. 1, the air conditioner for a vehicle includes an air conditioning casing 10, an evaporator 20, a heater core 30, a front seat temperature adjustment door 51, and a front seat mode door.

The air conditioning casing 10 includes an air inlet 11 and an air outlet, and an air passage is formed therein. An air blower is connected to the air inlet 11 side to selectively flow the inside air or the outside air into the inside air passage of the air conditioning casing 10. The air outlet is constituted by a defrost vent 12, a front seat blowing face (face) vent 13, a front seat floor vent 114, a rear seat blowing face vent 15, and a rear seat floor vent 16. The internal air passage of the air conditioning case 10 is composed of a front seat cool air passage P1, a hot air passage P2, and a rear seat cool air passage P3.

The evaporator 20 serves as a cooling heat exchanger for cooling the air passing through the evaporator 20. The heater core 30 serves as a heating heat exchanger for heating air passing through the heater core 30. The heater core 30 is disposed on the downstream side of the evaporator 20 in the air flow direction, i.e., on the hot air path P2. The hot air path P2 is further provided with an electric heater 40 such as a PTC heater. The front seat temperature adjustment door 51 is disposed between the evaporator 20 and the heater core 30, and adjusts the opening degrees of the hot air path P2 passing through the heater core 30 and the cold air paths P1 and P3 bypassing the heater core 30. The front seat type door is constituted by a defroster door 53, a vent door 54, and a floor door 55.

The rear seat air passage is constituted by a rear seat cool air passage P3 through which the air having passed through the evaporator 20 bypasses the heater core 30, and a hot air passage through the heater core 30. The hot air path of the rear seat air path is used together with the hot air path P2 of the front seat air path. That is, a part of the air flowing through the hot air path P2 through the heater core 30 moves upward and is discharged to at least one of the defrost vent 12, the front seat blowing face vent 13, and the front seat floor vent 114, and another part of the air moves downward and is discharged to at least one of the rear seat blowing face vent 15 and the rear seat floor vent 16. The rear seat air duct includes a rear seat model door 58 that adjusts the opening degrees of the rear seat blow-out face vent 15 and the rear seat floor vent 16.

The air conditioning casing 10 includes a rear seat temperature adjustment door 52, a rear seat auxiliary temperature adjustment door 56, and a rear seat opening/closing door 57. The rear seat temperature adjustment door 52 is positioned between the evaporator 20 and the heater core 30, and adjusts the opening degrees of a path flowing to the hot air path P2 and a path flowing to the rear seat cool air path P3, and the rear seat auxiliary temperature adjustment door 56 is disposed on the downstream side of the heater core 30 in the air flow direction, and adjusts the opening degree of a path flowing to the rear seat air outlet. The rear seat opening/closing door 57 adjusts the opening degree of the rear seat cool air passage P3.

Fig. 2 is a diagram illustrating a front-rear seat cooling mode of a conventional vehicle air conditioner. Referring to fig. 2, in the front-rear cooling mode, the front-seat temperature-adjusting door 51 closes the hot-air duct P2 and opens the front-seat cool-air duct P1, and the rear-seat temperature-adjusting door 52 closes the hot-air duct P2 and opens the rear-seat cool-air duct P3. The rear seat auxiliary temperature adjusting door 56 closes the passage flowing to the rear seat air outlet, and the rear seat opening and closing door 57 opens the rear seat cool air passage P3. The air cooled by the evaporator 20 bypasses the heater core 30, so that a part of the air is discharged to at least one of the front seat air discharge ports through the front seat cool air passage P1, and the other part of the air is discharged to at least one of the rear seat air discharge ports through the rear seat cool air passage P3.

Fig. 3 is a diagram showing a front-rear seat heating mode of a conventional vehicle air conditioner. Referring to fig. 3, in the front-rear seat heating mode, the front-seat temperature-adjusting door 51 closes the front-seat cold-air passage P1 and opens the hot-air passage P2, and the rear-seat temperature-adjusting door 52 closes the rear-seat cold-air passage P3 and opens the hot-air passage P2. The rear seat auxiliary temperature adjusting door 56 opens a passage to the rear seat air outlet port, and the rear seat opening and closing door 57 closes the rear seat cool air passage P3. The air having passed through the evaporator 20 is heated by the heater core 30, and then a portion of the air moves upward to be discharged to at least one of the front seat air discharge ports, and another portion of the air moves downward to be discharged to at least one of the rear seat air discharge ports.

The conventional air conditioner for a vehicle controls opening/closing of air conditioning of a rear seat according to the positions of the rear seat temperature adjusting door 52 and the rear seat opening/closing door 57, and the rear seat mode door 58 is used only for adjusting the rear seat mode. In order to control air conditioning of the rear seat, the conventional air conditioner for a vehicle needs to include 2 temperature-adjusting doors 52 and 56, 1 opening/closing door 57, and 1 mode door 58, which increases the number of components.

In addition, in the case of the conventional air conditioner for a vehicle, in order to realize various air conditioning modes such as a rear seat vent mode, a rear seat double-stage mode, a rear seat floor mode, and a rear seat close (close) mode, not only the structure is complicated, but also it is difficult to perform a Bleed function (Bleed) of discharging air through the rear seat floor vent in the rear seat vent mode.

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above conventional problems, and provides an air conditioning device for a vehicle, comprising: the number of doors is reduced, various air conditioning modes can be realized without reducing air conditioning performance, and the control of the doors of each mode can be optimized.

Further, the present invention provides an air conditioning device for a vehicle, comprising: the rear seat vent mode can perform a Bleed function of discharging air to the rear seat floor vent, and optimize the size of the outlet and the shape of the door to adjust the amount of the rear seat floor vent.

Means for solving the problems

An air conditioning device for a vehicle according to the present invention includes: an air conditioning case having an air passage formed therein; a cooling heat exchanger and a heating heat exchanger which are provided in an air passage of the air conditioning case and exchange heat with air passing therethrough, the vehicle air conditioning device including: a front seat temperature adjusting door that adjusts an opening degree between a front seat cold air passage and a part of the hot air passage; a 1 st rear seat temperature adjustment door disposed between the cooling heat exchanger and the heating heat exchanger, and adjusting an opening degree of the other part of the hot air passage; and a rear seat mode door which adjusts the opening degree of the rear seat air outlet, wherein the rear seat mode door is provided with a bypass part so as to be capable of discharging a part of air (Bleed).

In the above, the rear seat module door has a stepped portion formed at one end portion.

In the above, the rear seat mode door is formed in a Dome (Dome) shape, a protrusion corresponding to the step is formed at the air-conditioning case, and a bleeding function is performed through a Gap (Gap) between the protrusion and the step.

In the above, the protrusion portion allows the rear seat mode door to rotate freely by the step portion of the rear seat mode door, and is caught at an end portion opposite to the step portion of the rear seat mode door to restrict the rotation of the rear seat mode door.

In the above, the stepped portion extends to both sides along the axial direction of the rear seat module door by a predetermined length.

In the above vehicle air conditioner, the 2 nd rear seat temperature adjustment door may be disposed downstream of the heating heat exchanger to adjust an opening degree between the hot air duct and the rear seat cool air duct, and the rear seat mode door may be disposed downstream of the 2 nd rear seat temperature adjustment door.

In the above, the rear seat mode door bleeds a part of air through the rear seat floor vent (Bleed) in the rear seat vent mode.

In the above, the rear seat cool air duct communicates with the rear seat floor vent opening and the rear seat blow-out face vent opening through the communication opening, the rear seat floor vent opening, and the rear seat blow-out face vent opening are formed in the air conditioning case in this order along the rotation radius of the rear seat mode door, and the protrusion is formed at the lower portion of the communication opening.

In the above, in the rear seat vent mode, the end portion on the opposite side of the stepped portion is closely attached to and sealed with the air conditioning case, and the end portion on the side where the stepped portion is formed is located at the protruding portion, so that a gap is formed between the protruding portion and the stepped portion.

In the above configuration, in the rear seat floor mode or the rear seat closed mode, both the end portion on the opposite side of the stepped portion and the end portion on the side where the stepped portion is formed are sealed in close contact with the air-conditioning case.

In the above, the rear seat mode door has a rear seat closing function of blocking the flow of air flowing to the rear seat air outlet.

In the above, when the rear seat is in the closed (OFF) mode, the step of the rear seat mode door faces the upper sealing surface of the air-conditioning case, and blocks a gap between the air-conditioning case and the step.

An air conditioning device for a vehicle according to another aspect of the present invention includes: an air conditioning case having an air passage formed therein; and a cooling heat exchanger and a heating heat exchanger which are provided in an air passage of the air conditioning case and exchange heat with air passing therethrough, the vehicle air conditioning apparatus including: a front seat temperature adjusting door that adjusts an opening degree between a front seat cold air passage and a part of the hot air passage; a 1 st rear seat temperature adjustment door disposed between the cooling heat exchanger and the heating heat exchanger, and adjusting an opening degree of the other part of the hot air passage; and a rear seat mode door which adjusts the opening degree of the rear seat air outlet, wherein the rear seat mode door is formed in a revolving door structure, sealing parts are formed at two tail ends of a door plate of the rear seat mode door, and the height of the sealing part at one side is different from that of the sealing part at the other side.

Effects of the invention

The air conditioner for vehicle of the invention can reduce the number of doors, realize various air conditioning modes without reducing the air conditioning performance, and optimize the control of the doors of each mode, thereby saving the load and the manufacturing cost of the air conditioner.

Meanwhile, in the rear seat vent mode, a discharge (Bleed) function of discharging air to the rear seat floor vent can be performed, and the size of the discharge port and the shape of the door can be optimized, so that the discharge amount of the rear seat floor can be appropriately adjusted.

Drawings

Fig. 1 is a sectional view showing a conventional air conditioner for a vehicle.

Fig. 2 is a diagram illustrating a front-rear seat cooling mode of a conventional vehicle air conditioner.

Fig. 3 is a diagram showing a front-rear seat heating mode of a conventional vehicle air conditioner.

Fig. 4 is a sectional view showing an air conditioner for a vehicle according to an embodiment of the present invention.

Fig. 5 is a perspective view illustrating a rear seat mode door according to an embodiment of the present invention.

FIG. 6 is a side view of a rear seat mode door illustrating one embodiment of the present invention.

Fig. 7 is a perspective view showing the inside of an air-conditioning case in which a rear seat mode door of one embodiment of the present invention is separated.

Fig. 8 is a perspective view illustrating a state in which a rear seat mode door of one embodiment of the present invention is coupled to an air-conditioning case.

Fig. 9 is a diagram showing a rear seat vent pattern of the air conditioner for a vehicle according to the embodiment of the present invention.

Fig. 10 is a diagram showing a rear seat floor pattern of the air conditioner for a vehicle according to the embodiment of the present invention.

Fig. 11 is a diagram showing a rear seat double level (bi-level) mode of the vehicular air conditioning device according to the embodiment of the present invention.

Fig. 12 is a diagram showing a rear seat closing mode of the vehicle air conditioner according to the embodiment of the present invention.

(symbol description)

110: air-conditioning case 111: air inlet

112: defrost vent 113: front seat blowing face ventilation opening

114: front seat floor vent 115: rear seat blowing surface ventilation opening

116: rear seat floor vent 120: evaporator with a heat exchanger

130: heater core 140: electric heater

153: the defrost door 154: ventilation opening door

155: floor door

171: front seat temperature adjustment door 172: no. 1 back seat temperature adjusting door

159: 2 nd rear seat temperature adjustment door P1: front seat cold air channel

P2: hot air passage P3: cold air channel of rear seat

200: rear seat mode door 210: rotating shaft

220: the dome portion 230: step part

241: end 242 on one side: the end part of the other side

1102: communication port 1103: projection part

1104: gap

Detailed Description

The technical structure of the air conditioner for a vehicle will be described in detail below with reference to the accompanying drawings.

Fig. 4 is a sectional view showing an air conditioner for a vehicle according to an embodiment of the present invention. As shown in fig. 4, an air conditioning device for a vehicle according to an embodiment of the present invention includes: an air conditioning case 110 having an air passage formed therein; and a cooling heat exchanger and a heating heat exchanger which are provided in an air passage of the air-conditioning case 110 and exchange heat with air passing therethrough.

The air conditioning case 110 includes an air inlet 111 and an air outlet, and an air passage is formed therein. An air blowing device is connected to the air inflow port 111 side, whereby the inside air or the outside air selectively flows into the inside air passage of the air-conditioning case 110. The air outlet is composed of a front seat air outlet composed of a defrost vent 112, a front seat blowing face vent 113, and a front seat floor vent 114, and a rear seat air outlet composed of a rear seat blowing face vent 115, and a rear seat floor vent 116.

The cooling heat exchanger is constituted by the evaporator 120. The refrigerant flowing inside the evaporator 120 exchanges heat with air passing through the evaporator 120 to cool the air. The heating heat exchanger is constituted by a heater core 130. The cooling water flowing inside the heater core 130 exchanges heat with the air passing through the heater core 130 to heat the air. The heater core 130 is disposed on the downstream side of the evaporator 120 in the air flow direction, i.e., on the hot air path P2. The hot air path P2 may further include an electric heater 140 such as a PTC heater.

The air passage inside the air conditioning case 110 is formed by a front seat cool air passage P1, a hot air passage P2, and a rear seat cool air passage P3. On the downstream side of the evaporator 120, the air passage is divided into 3 passages of a front seat cool air passage P1, a hot air passage P2, and a rear seat cool air passage P3. The front seat cold air duct P1, the hot air duct P2, and the rear seat cold air duct P3 are formed in this order from the upper portion to the lower portion, and the hot air duct P2 is disposed between the front seat cold air duct P1 and the rear seat cold air duct P3 in the up-down direction.

The air having passed through the evaporator 120 bypasses the heater core 130 of the hot air path P2 and flows to the front seat cold air path P1 and the rear seat cold air path P3 or flows again to the front seat cold air path P1 or the rear seat cold air path P3 after passing through the heater core 130 of the hot air path P2.

The front-seat cool air passage P1 is a passage through which the air that has passed through the evaporator 120 bypasses the heater core 130 and flows toward the front seat side of the vehicle. The rear-seat cool air duct P3 is a duct through which the air that has passed through the evaporator 120 bypasses the heater core 130 and flows toward the rear seat side of the vehicle. The hot air path P2 is a path through which the air that has passed through the evaporator 120 passes through the heater core 130 and flows toward the front seat or the rear seat of the vehicle.

The air conditioning case 110 is provided with a front seat air outlet for discharging air toward the front seat side of the vehicle, and the opening degree of the front seat air outlet is controlled by the front seat mode door. The front seat mode door is composed of a defrost door 153 that adjusts the opening degree of the defrost vent 112, a vent door 154 that adjusts the opening degree of the front seat blow-out vent 113, and a floor door 155 that adjusts the opening degree of the front seat floor vent 114. Meanwhile, the air conditioning case 110 is provided with a rear seat air outlet for discharging air to the vehicle rear seat side, and the opening degree of the rear seat air outlet is controlled by the rear seat mode door 200.

The air conditioner for a vehicle includes a front seat temperature adjustment door 171. The front seat temperature adjustment door 171 adjusts the opening degree between the front seat cold air passage P1 and a part of the hot air passage P2. The front seat temperature adjustment door 171 is adjacent downstream of the evaporator 120 and located at a boundary portion where the front seat cool air passage P1 and the warm air passage P2 are separated. The front seat temperature adjustment door 171 is formed in a Tail door (Tail door) type in which plate members are formed on both sides in the radial direction around the rotation axis.

The front seat temperature adjustment door 171 is constituted by a rotary shaft, a 1 st door part and a 2 nd door part. The rotation shaft of the front seat temperature adjustment door 171 is disposed adjacent to the outlet-side lower end of the hot air passage P2. The 1 st door part is formed at one side with a rotating shaft as a center and adjusts the opening degree of a part of the upper part of the inlets of the cold air passage P1 and the hot air passage P2. The 2 nd gate part is formed on the other side with the rotation axis as the center and adjusts the opening of the front seat side outlet in the hot air passage P2.

The air conditioner for a vehicle according to one embodiment of the present invention controls the temperature of independent 3 zones (3 zones) of a front driver seat, a front passenger seat, and a rear seat (rear seat), and realizes the temperature control of the rear seat by 3 doors. That is, the air conditioner for a vehicle includes the 1 st rear seat temperature adjustment door 172, the 2 nd rear seat temperature adjustment door 159, and the rear seat mode door 200.

The 1 st rear seat temperature adjustment door 172 is disposed between the evaporator 120 and the heater core 130, and adjusts the opening degree of the other portion of the hot air path P2. That is, the 1 st rear seat temperature adjustment door 172 adjusts the opening degree of a portion of the inlet lower portion of the hot air passageway P2, which is not covered by the front seat temperature adjustment door 171, among the inlets of the hot air passageway P2.

The 2 nd rear seat temperature adjustment door 159 is disposed downstream of the heater core 130, and adjusts an opening degree between the hot air duct P2 and the rear seat cool air duct P3. The 2 nd rear seat temperature adjustment door 159 is configured in a Dome (Dome) door type. The hot air duct P2 downstream of the heater core 130 is configured to communicate with the rear seat cool air duct P3. The 2 nd rear seat temperature adjustment door 159 is disposed in a communication passage between the hot air passage P2 and the rear seat cold air passage P3 downstream of the heater core 130. That is, the 2 nd rear seat temperature adjustment door 159 adjusts the opening degree between the communication passage between the hot air passage P2 and the rear seat cold air passage P3 and the rear seat cold air passage P3.

The rear seat model door 200 is disposed downstream of the 2 nd rear seat temperature adjustment door 159, and adjusts the opening degree of the rear seat air outlet. The rear seat mode door 200 is constructed in a Dome (Dome) type door type. The rear seat mode door 200 adjusts the opening degree between the rear seat air passage, the rear seat blow-out vent 115, and the rear seat floor vent 116.

That is, in fig. 4, the rear mode door 200 is rotated maximally in the counterclockwise direction to close the rear seat air passage, rotated at a certain angle in the clockwise direction to close the rear seat floor vent 116 and open the rear seat blowing face vent 115, rotated maximally in the clockwise direction to close the rear seat blowing face vent 115 and open the rear seat floor vent 116, or positioned at an intermediate position between the rear seat blowing face vent 115 and the rear seat floor vent 116 to open both the vents.

The vehicle air conditioner controls the temperature of the rear seat using the 1 st rear seat temperature adjustment door 172 and the 2 nd rear seat temperature adjustment door 159. Meanwhile, On and Off of the rear seat air passage are controlled by the rear seat mode door 200. In this way, by using 2 temperature-adjusting doors and 1 mode door, the rear seat air conditioning control is smoothly executed and the 3-zone air conditioner is realized with a reduced number of doors as compared with the conventional art. Therefore, the number of parts can be reduced to reduce the manufacturing cost, and the load and volume of the air conditioner can be reduced.

In the case of the condition that the rear seat mode door 200 closes (Off) the rear seat air passage, the position of the 1 st rear seat temperature adjustment door 172 is changed in accordance with the front seat condition. Specifically, when the rear mode door 200 closes (Off) the rear seat air passage, the 1 st rear seat temperature adjusting door 172 is in the maximum cooling (Max Cool) state of the rear seat in a case where the front seat temperature adjusting door 171 is in the maximum cooling (Max Cool) condition of the front seat.

In addition, when the rear mode door 200 closes (Off) the rear seat air passage, the 1 st rear seat temperature adjustment door 172 is in the maximum heating (Max Warm) state of the rear seat in the case where the front seat temperature adjustment door 171 is not in the maximum cooling condition of the front seat. In this case, when the front seat temperature adjustment door 171 is not in the maximum cooling condition of the front seat, the front seat temperature adjustment door 171 is in the maximum heating (Max Warm) state or the Mixing (mix) state of the front seat.

In this way, by configuring the position of the 1 st rear seat temperature adjustment door 172 to be changed according to the front seat condition, the entire air is guided to flow to the hot air duct P2, and the performance of the heater core 130 in the front seat can be utilized to the maximum, thereby improving the heating performance.

The 1 st rear seat temperature adjustment door 172 is constituted by a Dome (Dome) door type. In the case of the maximum cooling (Max Cool) condition, the 1 st rear seat temperature adjusting door 172 is located at a position closing the hot air passageway P2, and in the case of the maximum heating (Max Warm) condition, the 1 st rear seat temperature adjusting door 172 is located at a position dividing between the evaporator 120 and the heater core 130.

That is, in the case where the front seat temperature adjustment door 171 is not in the maximum cooling condition of the front seat, the 1 st rear seat temperature adjustment door 172 guides the air inside the Dome (Dome) to the hot air path P2 side. With this configuration, the streamlined dome inner surface guides the air passing through the evaporator 120 to the heater core 130 side of the hot air path P2 more smoothly.

The 1 st rear seat temperature adjustment door 172 always opens the rear seat cool air passage P3. That is, the 1 st rear seat temperature adjustment door 172 performs the opening and closing function and the air guiding function of the hot air passageway P2 as described above without performing the opening (On)/closing (OFF) function of the rear seat cold air passageway P3 to improve the heater core performance, and at the same time performs the opening/closing function of the rear seat cold air passageway P3 by the rear seat mode door 200, thereby enabling the opening/closing control of the rear seat air adjustment to be smoothly performed with a reduced number of doors.

On the other hand, the 1 st rear seat temperature adjustment door 172 and the 2 nd rear seat temperature adjustment door 158 are adjusted to execute the rear seat temperature control. That is, in the case of the maximum cooling (Max Cool) condition, the 1 st rear seat temperature adjustment door 172 closes the hot air passageway P2, and the 2 nd rear seat temperature adjustment door 159 closes the communication passageway between the hot air passageway P2 and the rear seat cold air passageway P3 downstream of the heater core 130. In addition, in the case of the maximum heating (Max Warm) condition, the inside of the Dome (Dome) of the 1 st rear seat temperature adjustment door 172 guides air to the hot air passageway P2 side, and the 2 nd rear seat temperature adjustment door 159 closes the rear seat cold air passageway P3. Meanwhile, in case of the Mixing (Mixing) mode, the inside of the Dome (Dome) of the 1 st rear seat temperature adjusting door 172 guides air to the hot air passageway P2 side, and the 2 nd rear seat temperature adjusting door 159 is located between the rear seat cold air passageway P3 and a communication passageway between the hot air passageway P2 and the rear seat cold air passageway P3 downstream of the heater core 130.

Fig. 5 is a perspective view illustrating a rear seat mode door according to an embodiment of the present invention, fig. 6 is a side view illustrating the rear seat mode door according to the embodiment of the present invention, fig. 7 is a perspective view illustrating the inside of an air-conditioning case in which the rear seat mode door according to the embodiment of the present invention is separated, and fig. 8 is a perspective view illustrating a state in which the rear seat mode door according to the embodiment of the present invention is coupled to the air-conditioning case.

Referring again to fig. 5 to 8, the rear seat mode door 200 has a rear seat closing function of blocking the flow of air flowing to the rear seat air outlet. In addition, the rear seat mode door 200 is formed with a bypass portion to enable a part of air to be discharged (Bleed). More specifically, the rear seat mode door 200 is formed with a stepped part 230 at an end 241 of one side. The air conditioning case 110 is formed with a protruding portion 1103 corresponding to the step portion 230. The bleeding function is performed by the Gap (Gap: 1104) between the protrusion 1103 and the step 230.

The protrusion 1103 allows the rear seat mode door 200 to rotate freely by the stepped part 230 of the rear seat mode door 200, and is caught by an end 242 opposite to the stepped part 230 of the rear seat mode door 200 to restrict the rotation of the rear seat mode door 200. The stepped portion 230 extends at both sides along the axial direction of the rear seat module door 200 to form a certain length.

Although not shown, a separator (separator) is provided in the middle of the air-conditioning case 110 in the width direction, and air-conditioning is performed independently for the left and right spaces in the vehicle width direction. As shown in fig. 7, rear seat floor vents 116 are formed on both left and right sides of the air-conditioning case 110 in the width direction, and rear seat blowing face vents 115 are formed on the central portion side of the air-conditioning case 110 in the width direction.

The rear seat cool air duct P3 communicates with the rear seat floor vent opening 116 and the rear seat blow-out surface vent opening 115 through the communication opening 1102. Meanwhile, the air conditioning case 110 is formed with a communication port 1102, a rear seat floor vent 116, and a rear seat blow-out face vent 115 in this order along the rotation radius of the rear seat model door 200 in the counterclockwise direction. The communication port 1102, the rear seat floor vent port 116, and the rear seat blowing surface vent port 115 are radially arranged around the rotation axis 210 of the rear seat mode door 200. A protrusion 1103 is formed at the lower portion of the communication port 1102.

In the rear seat vent mode, the rear seat mode door 200 vents a portion of the air through the rear seat floor vent 116 (Bleed). That is, in the rear seat vent mode, the end 242 opposite to the stepped portion 230 is closely attached to and sealed with the air conditioning case 110, and the end 241 on the side where the stepped portion 230 is formed is positioned on the protruding portion 1103, so that the gap 1104 is formed between the protruding portion 1103 and the stepped portion 230.

On the other hand, in the rear seat floor mode or the rear seat closed mode, both the end 242 opposite to the stepped portion 230 and the end 241 on the side where the stepped portion 230 is formed are closely attached to and sealed with the air conditioning case 110.

The rear seat mode door 200 is configured as a Rotary (rotate) type. More specifically, the rear seat model door 200 is formed rotatably about a rotation shaft 210 in the air conditioning case 110, and is configured by a fan-shaped dome-shaped door having a dome portion 220 formed radially apart from the rotation shaft 210.

The rear seat module door 200 is formed with a dome portion 220 extending between one end 241 and the other end 242 in the rotation direction, and the dome portion 220 serves as a partition wall blocking the air passage or the vent outlet to prevent the flow of air. Meanwhile, a space between the rotation shaft 210 and the dome portion 220 forms a passage through which air flows.

The rear seat mode door 200 is provided in a rotating chamber formed downstream of the 2 nd rear seat temperature adjustment door 159 in the rear seat air passage of the air-conditioning case 110. The rotation chamber is configured to be surrounded by a circular inner wall corresponding to the shape of the dome-shaped rear seat model door 200, thereby guiding the rotation of the rear seat model door 200. A communication port 1102, a rear seat floor vent port 116, and a rear seat blow-out surface vent port 115 are formed in this order in the counterclockwise direction in the partition wall of the whirling chamber.

The communication port 1102 is formed downstream of the 2 nd rear seat temperature adjustment door 159, and is an air inlet port of the rotation chamber. The air that has flowed into the rotation chamber through the communication port 1102 is discharged to at least one of the rear seat floor vent port 116 and the rear seat blow-out surface vent port 115. A rotation hole 1101 into which the rotation shaft 210 of the rear seat mode door 200 is inserted is formed in the rotation chamber.

The protruding portion 1103 extends to both sides in the axial direction (vehicle width direction) by a certain length so as to correspond to the step portion 230 of the rear seat module door 200. The length of the protruding portion 1103 in the radial direction is slightly shorter than the step portion 230. That is, as shown in fig. 8, when the step portion 230 is located at the protruding portion 1103, a minute gap 1104 is formed between the step portion 230 and the protruding portion 1103, and a bleeding function of air (Bleed) is performed by the gap 1104.

Meanwhile, in the case where the other-side end 242 of the rear seat mode door 200 is not formed with a stepped portion, and thus the other-side end 242 is located at the protrusion 1103, the protrusion 1103 serves as a stopper to limit the rotation of the rear seat mode door 200, and there is no gap between the protrusion 1103 and the rear seat mode door 200, and thus air is not discharged to the rear seat floor vent 116.

That is, sealing parts are formed at both ends of the door panel of the rear seat mode door 200. In this case, the height of the sealing portion on one side is different from the height of the sealing portion on the other side. That is, the height of the sealing portion on the side where the stepped portion 230 is formed is lower than the height of the sealing portion on the side where the stepped portion is not formed.

In the rear seat closed (OFF) mode, the stepped part 230 of the rear seat mode door 200 faces the upper sealing surface of the air-conditioning case 110 to block between the air-conditioning case 110 and the stepped part 230. The sealing portion on the side where the stepped portion 230 is formed may perform a bypass function (a bleed function) when located on the sealing surface on the lower side of the air-conditioning case 110, that is, the sealing surface on the side where the protruding portion 1103 is formed, but the flow path is closed when located on the sealing surface on the upper side, and the bleed cannot be performed in the rear seat closed mode.

Fig. 9 is a diagram showing a rear seat vent pattern of the air conditioner for a vehicle according to the embodiment of the present invention.

Referring to fig. 9, a part of the air having passed through the evaporator 120 is discharged to the front seat blowing face vent 113 through the front seat cool air passage P1, and the other part of the air is discharged to the rear seat blowing face vent 115 through the rear seat cool air passage P3. The front seat temperature adjustment door 171 and the 1 st rear seat temperature adjustment door 172 close all of the hot air duct P2, and the 2 nd rear seat temperature adjustment door 159 closes the communication duct between the hot air duct P2 and the rear seat cool air duct P3. Meanwhile, the rear mode door 200 closes the rear seat floor vent opening 116, communicating the rear seat air passage with the rear seat blow-out face vent opening 115.

In this case, the step 230 of the rear seat mode door 200 is located at the protrusion 1103, and air bypasses through the gap 1104 between the step 230 and the protrusion 1103 and is discharged through the rear seat floor vent 116 (Bleed) as shown by a dotted line of fig. 9.

Fig. 10 is a diagram showing a rear seat floor pattern of the air conditioner for a vehicle according to the embodiment of the present invention.

Referring to fig. 10, after the air having passed through the evaporator 120 flows to the hot air path P2 and passes through the heater core 130 and the electric heater 140, a part of the air is discharged to the front seat floor vent 114, and another part of the air is discharged to the rear seat floor vent 116 through a communication path between the hot air path P2 and the rear seat cold air path P3. The front seat temperature adjustment door 171 and the 1 st rear seat temperature adjustment door 172 open the hot air duct P2, and the 2 nd rear seat temperature adjustment door 159 closes the rear seat cool air duct P3 and opens a communication duct between the hot air duct P2 and the rear seat cool air duct P3. Meanwhile, the rear seat mode door 200 closes the rear seat blow-out face vent 115, communicating the rear seat air passage with the rear seat floor vent 116.

In this case, the stepped portion 230 and the other end portion 242 of the rear seat mode door 200 are blocked by the partition wall of the air-conditioning case 110, and the rear seat blowout face vent 115 is completely closed without a gap.

Fig. 11 is a diagram showing a rear seat dual mode of the air conditioning device for a vehicle according to the embodiment of the present invention.

Referring to fig. 11, the front seat may be implemented as a front seat floor mode as shown in fig. 10 or as a dual-stage mode by opening a portion of the front seat blow-out vent 113. A part of the air having passed through the evaporator 120 flows to the hot air path P2, passes through the heater core 130 and the electric heater 140, then flows to the rear seat air path through a communication path between the hot air path P2 and the rear seat cold air path P3, and the other part of the air having passed through the evaporator 120 is mixed with the air heated by passing through the rear seat cold air path P3 and passing through the hot air path P2. The mixed air is discharged to the rear seat blowing face vent 115 and the rear seat floor vent 116.

The 1 st rear seat temperature adjustment door 172 opens the hot air path P2, and the 2 nd rear seat temperature adjustment door 159 is located in the middle to open all of the communication paths between the rear seat cold air path P3 and the hot air path P2 and the rear seat cold air path P3, so that the temperature can be adjusted. Meanwhile, the rear seat mode door 200 is located intermediate the rear seat blow-out face vent 115 and the rear seat floor vent 116 to implement the dual stage mode.

Fig. 12 is a diagram showing a rear seat closing mode of the vehicle air conditioner according to the embodiment of the present invention.

Referring to fig. 12, the air passing through the evaporator 120 flows through the hot air path P2, passes through the heater core 130 and the electric heater 140, and is discharged to the front floor vent 114. The rear seat closing mode may be a front seat maximum heating mode, a hybrid mode, or the like. The rear seat mode door 200 closes the rear seat air passage.

In this case, the stepped portion 230 and the other end portion 242 of the rear seat mode door 200 are closed by the partition wall of the air-conditioning case 110, and the communication opening 1102 is completely closed without a gap.

The air conditioner for a vehicle according to the present invention has been described above with reference to the embodiments shown in the drawings, but these are merely examples, and those skilled in the art will understand that other embodiments can be modified variously and equally. Therefore, the true technical scope should be determined according to the technical idea of the appended claims.