KR101036392B1 - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to a vehicle air conditioner, and an object of the present invention is to prevent the warmth of the warmth passage from leaking toward the cold air bypass passage through the left and right coupling portions of the air conditioning case.

In the vehicle air conditioner according to the present invention, a defrost vent 112, a face vent 114, and a floor vent 116 for the front seat are installed, and the left and right cases are formed to the left and right sides. An air conditioning case (100) having (100a, 100b); An evaporator (E) and a heater core (H) installed in the air conditioning case; A temperature control door 120 for the front seat for adjusting the opening degree of the cold / hot air passages P1 and P2 of the air conditioning case; A floor vent 118 for communicating with the console vent 119 installed at the rear of the heater core and the floor vent for the front seat; A partition wall 122 communicating with the warm passage and the console vent and having a communicating passage 124 for controlling the opening degree by the warmth adjusting door 126; A cold air bypass passage (P3) installed along the bottom of the heater core in the air conditioning case to communicate the cold air passage with the console vent; And, the rear seat temperature control door 128 for adjusting the opening degree of each inlet of the cold air bypass passage and the warm passage. An air conditioner is disposed between the warm passage and the cold air bypass passage to discharge the air leaked from the warm passage through the left and right coupling portions 102 of the air conditioning case to the outside while isolating the cold air bypass passage from the warm passage. A leakage warmer discharge passage 140 penetrating to the left and right of the case is formed.

Air Conditioning, Air Conditioning, Vehicles, Vehicles, Bypass, Cold, Warmth, Leakage Prevention, Warmth Emission

Description

Automotive air conditioning unit {AIR CONDITIONER FOR VEHICLE}

1 is a cross-sectional view showing an example of a conventional vehicle air conditioner.

2 is a cross-sectional view showing another example of a conventional vehicle air conditioner.

3 is a cross-sectional view showing still another example of a conventional vehicle air conditioner.

4 is a partial cross-sectional view taken along line IV-IV of FIG. 3.

5 is a cross-sectional view showing a vehicle air conditioner according to the present invention.

FIG. 6 is a partial cross-sectional view taken along line VI-VI of FIG. 5.

FIG. 7 is a partial sectional view taken along line VI-VI of FIG. 5, showing another example.

<Explanation of symbols for the main parts of the drawings>

100: air conditioning case, 100a: left case,

100b: right case, 102: left and right fittings,

110: left and right separation wall, 112: Defrost Vent,

114: Face Vent, 116: Floor Vent for the Front Seat,

118: floor vent for the rear seat, 119: console vent,

120: temperature control door for the front seat, 122: partition wall,

124: communication path, 126: warmth control door,

128: temperature control door for the rear seat, 140: leakage heat discharge passage,

E: Evaporator, H: Heater Core,

P1: cold passage, P2: warm passage,

P3: Cold bypass passage.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner capable of preventing the warmth of a warm passage from leaking toward a cold air bypass passage through left and right coupling portions of an air conditioning case.

1 is an example of a vehicle air conditioning apparatus, a semi-center mounting type vehicle air conditioner in which the evaporator (E) and the heater core (H) is embedded in the interior of a single air conditioning case (10). An example of this is shown.

The vehicle air conditioner includes a defrost vent (12), a face vent (14), and a floor vent (Floor Vent) 16 whose openings are controlled at doors by doors 12d, 14d, and 16d, respectively. The air conditioning case 10 is installed; A blower (not shown) connected to the inlet of the air conditioning case 10 to blow inside and / or outside air; An evaporator (E) and a heater core (H) installed in an internal flow path of the air conditioning case (10); And, it comprises a temperature control door 20 for adjusting the opening degree of the cold air passage (P1) and the warm passage (P2) of the air conditioning case (10). The floor vent 16 may be branched into a front vent 16f for discharging air toward the front seat and a rear vent 16r for discharging air toward the rear seat.

According to the vehicle air conditioner configured as described above, when the cooling cycle is operated, the temperature control door 20 moves to the position shown by the dotted line in FIG. 1 to open the cold air passage (P1) and the warm air passage ( Block P2). Therefore, the air blown by the blower is exchanged with the coolant flowing through the inside of the evaporator E while passing through the surface of the evaporator E, and is changed to cold, and as shown by a dotted arrow in FIG. 1, the cold air passage P1. It flows toward and discharged to the vehicle interior through the vent which is opened in accordance with the predetermined air discharge mode, thereby cooling the vehicle interior.

In addition, when the heating cycle is activated, the temperature control door 20 moves to the position shown by the solid line in FIG. 1 to block the cold air passage P1 and to open the warm passage P2. Also in this case, the operation of the cooling cycle through the evaporator E is stopped. Therefore, the blower air is exchanged with the coolant flowing through the inside of the heater core H while passing through the heater core H through the warm passage P2 as shown by a solid arrow in FIG. By discharging to the vehicle interior through the vent opening in accordance with the air discharge mode, heating of the vehicle interior is performed.

However, in the vehicle air conditioner as described above, when the cooling cycle is operated in the air discharge mode in which the floor vent 16 is opened, the floor vent 16 is located behind the heater core H. As the temperature of the air discharged through the floor vent 16 is increased due to the influence of the heater core H, the cooling performance is deteriorated. Furthermore, since the air conditioner case 10 is formed in a left / right bi-dividing type or a three-dividing type of a left / right case and a bottom case, a heater is formed through a matching part of the left / right case. Since the warm air passing through the core H leaks toward the floor vent 16, the temperature of the air discharged through the floor vent 16 is further increased.

In order to solve this problem, a vehicle air conditioner as shown in Figure 2 has been proposed.

In Fig. 2, the same members as those in Fig. 1 are denoted by the same reference numerals as in Fig. 1. In the vehicular air conditioner of FIG. 2, a cold air bypass passage P3 connecting the cold air passage P1 downstream of the evaporator E and the floor vent 16 is further provided below the heater core H. In addition, the opening degree of the inlet of the cold air bypass passage (P3) is controlled by the second temperature control door 32, the second temperature control door 32 is the warmth passage (P2) toward the heater core (H) side. It also functions to adjust the degree of opening. In addition, the opening degree of the outlet of the cold air bypass passage (P3) is controlled by the cold air control door 34, the opening degree of the outlet of the warm air passage (P2) is adjusted by the first warmth control door (26). In addition, a communication passage 24 for communicating the warm passage P2 and the floor vent 16 is formed in the partition wall 22 that divides the warm passage P2 and the floor vent 16. The opening degree of 24 is controlled by the second warmth control door 28. Examples of such a vehicle air conditioner are disclosed in Japanese Patent Laid-Open Nos. 2003-159929 and Japanese Patent Laid-Open No. 11-91337.

According to the vehicle air conditioner described above, when the cooling cycle is operated in the air discharge mode in which the floor vent 16 is opened, the evaporator E passes through the cold air bypass passage P3 toward the floor vent 16. By further supplying cold air, the temperature of the air discharged through the floor vent 16 under the influence of the heater core H can be lowered.

However, in the vehicle air conditioner, since the cold air bypass passage P3 is directly in contact with the lower portion of the heater core H, the cold air supplied through the cold air bypass passage P3 is removed from the heater core H. The effect of lowering the increase in the temperature of the air heated by the conducted heat and discharged through the floor vent 16 is lowered. Furthermore, since the heater core H blocks a part of the cold air bypass passage P3 in a form in which the lower end portion of the heater core H is concave toward the cold air bypass passage P3, the cold air passes through the heater core H. Heating becomes more severe, and the air volume of the air flowing through the cold air bypass passage P3 also becomes small, and thus the temperature of the air discharged through the floor vent 16 cannot be effectively controlled. Also in this case, as in the vehicle air conditioner of FIG. 1, the warm air flowing through the warm passage P2 through the mating portion of the air conditioning case 10 is leaked toward the cold air bypass passage P3, whereby the cold air bypass is performed. There is a problem that the temperature of the air flowing through the passage (P3) is further raised.

Meanwhile, as described above, in order to prevent the air flowing through the cold air bypass passage P3 from being affected by the heater core H, a vehicle air conditioner as shown in FIG. 3 may be considered.

In Fig. 3, members having the same function as the vehicle air conditioner of Fig. 2 are indicated by the same reference numerals as in Fig. 2. In the air conditioning apparatus of FIG. 3, a rear vent 18 communicating with a console vent 19, a front seat vent 17, and a front seat vent is located behind the heater core H. Is installed, and the heater core (H) is arranged in a substantially horizontal structure, partitioned from the cold air bypass passage (P3) by a horizontal separation wall (30) provided in parallel with the bottom of the air conditioning case (10). have. The opening degree of the cold air passage P1 and the outlet of the warm air passage P2 is adjusted by the temperature control door 21 for the front seat.

Therefore, since the heater core H is horizontally installed while being partitioned from the cold air bypass passage P3 by the horizontal separation wall 30, air flowing through the cold air bypass passage P3 is heated by the heater core H. Can be affected by). In addition, since the cold air bypass passage (P3) is also installed substantially horizontally, the cold air can flow smoothly through the cold air bypass passage (P3) and at the same time can lower the height of the air conditioning case (10).

However, also in the vehicle air conditioner of FIG. 3, since the air conditioning case 10 is provided with the left / right cases 10a and 10b which are joined to the left / right side as shown in FIG. As the warm air flowing through the hot air passage (P2) through the mating portion 11 of the air conditioning case 10 leaks toward the cold air bypass passage (P3), through the cold air bypass passage (P3) and the console vent (19) There is a problem in that it is still impossible to prevent the temperature of the discharged cold air from rising.

An object of the present invention is to provide a vehicle air conditioner that can prevent the warmth of the warm passage to leak toward the cold air bypass passage through the left and right coupling portions of the air conditioning case.

In order to achieve the above object, the present invention, the air-conditioning case having a left / right case which is installed at the outlet, the defrost vent, the face vent and the front seat floor vent is adjusted to each of the left and right sides; An evaporator and a heater core installed in an internal flow path of the air conditioning case; A temperature control door for the front seat for adjusting the opening degree of the cold air passage and the hot air passage of the air conditioning case; A floor vent for the rear seat communicating with the console vent installed at the rear of the heater core and the floor vent for the front seat; A partition wall communicating with the warm passage and the console vent, and a communicating passage having an opening degree controlled by a warmth control door, and partitioning the heater core downstream warm passage, floor vents, and console vent; A cold air bypass passage installed to communicate the cold air passage with the console vent along a bottom of the heater core in the air conditioning case; And a rear seat temperature regulating door configured to adjust an opening degree of the inlet of the cold air bypass passage and the inlet of the warm air passage. The vehicle air conditioner comprising: the cold air between the warm air passage and the cold air bypass passage. A leakage warmer discharge passage penetrating to the left and right of the air conditioning case is formed so as to isolate the bypass passage from the warm passage and discharge the air leaking from the warm passage through the left and right coupling portions of the air conditioning case to the outside. .

In addition, the internal flow path of the air conditioning case may be divided into left and right flow paths by left and right separation walls.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are based on the principle that the inventor can appropriately define the concept of terms in order to explain the invention in the best way. It should be interpreted as meanings and concepts corresponding to

5, there is shown a vehicle air conditioner according to the present invention.

The vehicle air conditioner according to the present invention includes an air conditioner case (100) and an evaporator (E) and a heater core (H) which are sequentially installed in an internal flow path of the air conditioner case (100).

On the outlet side of the air conditioning case 100, a defrost vent 112 for discharging air to the windshield of the vehicle interior, a face vent 114 for discharging air to the upper half of the vehicle interior, and The floor vent 116 for the front seat for discharging air toward the bottom of the front seat is provided in sequence. The openings 112, 114, and 116 are controlled by their respective doors 112d, 114d, and 116d. In addition, a blower not shown is installed at the inlet of the air conditioning case 100.

In addition, the inside of the air conditioning case 100, the front seat for adjusting the opening degree of the outlet of the cold air passage (P1) and the warm air passage (P2) with respect to the mixing chamber (MC), which is the outlet side space of the air conditioning case (100). Temperature control door 120 is installed. That is, the temperature control door 120 for the front seat operates to open the cold air passage (P1) and at the same time close the outlet of the warm passage (P2) with respect to the mixing chamber (MC), or The cold air passage (P1) is closed and at the same time operates to open the outlet of the warm passage (P2).

The evaporator (E) is installed substantially vertically close to the inlet side of the air conditioning case (100). In addition, the heater core (H) is preferably installed substantially horizontally in the central portion of the internal flow path of the air conditioning case 100 or installed to be inclined downward at a predetermined inclination angle to the rear.

In addition, behind the heater core H, there is a console vent 119 and a rear seat vent 118 communicating with the front seat vent 116 so as to discharge air toward the rear seat bottom of the vehicle interior. Is installed.

The front floor vent 116, the rear seat vent 118 and the console vent 119 are partitioned from the warm passage P2 by the partition wall 122, and the partition wall 122 has a warm passage ( A communication path 124 communicating P2) with the console vent 119 is formed. In addition, the communication path 124 is the opening degree is adjusted by the warmth control door 126.

On the other hand, along the bottom bottom of the heater core (H) of the air conditioning case 100, a cold air bypass passage (P3) for communicating the cold air passage (P1) downstream of the evaporator (E) and the console vent 119 is formed. do. Accordingly, the heater core H is installed substantially horizontally, and the cold air bypass passage P3 is also installed substantially horizontally along the bottom of the air conditioning case 100, whereby cold air is transferred through the cold air bypass passage P3. While flowing smoothly toward the bet 119, the height of the air conditioner can be lowered.

The opening of the inlet of the cold air bypass passage (P3) and the inlet of the warm passage (P2) may be controlled by the temperature control door 128 for the rear seat.

According to the present invention, as shown in FIGS. 5 and 6, between the warm air passage P2 and the cold air bypass passage P3, the cold air bypass passage P3 is isolated from the warm passage P2. While discharging air leaking from the warm passage P2 through the left and right fitting portions 102 of the left / right cases 100a and 100b constituting the air conditioning case 100 to the outside, the air conditioning case 100 The leakage warmer discharge passage 140 penetrating from side to side is formed.

In addition, the air conditioning case 100, as shown in Figure 7, the inner flow path may be divided left and right by the left and right separation wall 110 in the width direction. In this case, the various doors are independently of the respective flow paths on both sides of the left and right separation walls 110 in consideration of the fact that the interior of the air conditioning case 100 is partitioned left and right by the left and right separation walls 110. It is preferable that the opening degree can be adjusted.

In FIG. 5, reference numeral 150 denotes a condensate discharge port for discharging the condensate flowing down from the evaporator E. In FIG.

Next, the operation of the vehicle air conditioner according to the present invention configured as described above will be described.

When the full cooling mode in which the console vent 118 is opened is activated, the rear seat temperature control door 128 opens the inlet of the cold air bypass passage P3 and the inlet of the warm passage P2. The warmth control door 126 operates to close the communication path 124 formed in the partition wall 122. In addition, the temperature control door 120 for the front seat operates to open the cold air passage (P1) and to close the outlet of the warm air passage (P2).

In this state, the cold air passage P1 downstream of the evaporator E communicates with the console vent 119 through the cold air bypass passage P3, so that the cold air that has been heat-exchanged through the evaporator E passes through the cold air bypass. It flows toward the console vent 119 through the passage P3 and is discharged toward the rear seat of the vehicle interior, and is opened according to a predetermined air discharge mode among the remaining vents through the cold air passage P1 and the mixing chamber MC. By venting to the vehicle interior through the vents, cooling of the vehicle interior is performed. In addition, since the warm passage P2 is blocked, the cold air passing through the evaporator E does not pass through the heater core H.

In the process of operating the full cooling mode, since the cold air bypass passage P3 is isolated by the leakage warmer discharge passage 140 under the heater core H, the cold air bypass passage P3 is used. The air flowing to the console vent 119 may be blocked by the heater core H to increase the temperature.

In addition, in the present invention, the warmth that flows the warm air passage (P2) in the gap between the left and right case (100a, 100b) constituting the air conditioning case 100 is formed as the left and right cases (102a) formed by mutually right and left May leak, but the leaked warm air flows into the leakage warmer discharge passage 140 disposed between the warm air passage P2 and the cold air bypass passage P3 to the outside of the air conditioning case 100. Since it is discharged, the air flowing through the cold air bypass passage (P3) can be more effectively prevented from being raised by the temperature affected by the heater core (H).

In addition, when the full heating mode in which the console vent 119 is opened, the rear seat temperature control door 128 closes the inlet of the cold air bypass passage P3 and the warm passage P2. It operates to open the inlet of, the warmth control door 126 is operated to open the communication path 124 formed in the partition wall 122, the temperature control door 120 for the front seat closes the cold air passage (P1). In addition, it operates to open the outlet of the warm passage (P2), the operation of the cooling cycle through the evaporator (E) is stopped.

In this state, the warm air passage P2 downstream of the evaporator E does not communicate with the console vent 119 because the cold air bypass passage P3 is blocked. Therefore, the air passing through the evaporator E does not flow into the cold air bypass passage P3, but changes to warmth by heat exchange while passing through the heater core H through the warm passage P2. The warm air flows to the console vent 119 through the communication passage 124 formed in the partition wall 122 and is discharged toward the rear seat of the vehicle interior, while the remaining vents are passed through the warm passage P2 and the mixing chamber MC. By discharging to the vehicle interior through the vent which is opened in accordance with the predetermined air discharge mode, the heating of the vehicle interior is performed.

On the other hand, when the cooling / heating mode is activated, the rear seat temperature control door 128 is turned to a neutral position to open the inlet of the cold air bypass passage (P3) and the warm passage (P2), the warmth control door (126) ) Operates in a neutral position to open the communication path 124 formed in the partition wall 122. In addition, the front temperature control door 120 is turned to a neutral position to open the outlet of the cold air passage (P1) and the warm passage (P2), through the cooling cycle and the heater core (H) through the evaporator (E). All heating cycles are running.

In this state, the cold air passage P1 downstream of the evaporator E not only communicates with the console vent 119 through the cold air bypass passage P3, but also communicates with the warm air passage P2. Therefore, a part of the cold air heat-exchanged while passing through the evaporator E flows toward the console vent 119 through the cold air bypass passage P3, and the rest of the cold air is heated by the heater core H through the warm air passage P2. Heated through the), and then flows to the console vent 119 through the communication path 124, is mixed with the air is discharged to the rear seat of the vehicle interior.

In addition, the air flowing into the mixing chamber MC through the cold air passage P1 and the warm passage P2 is discharged into the vehicle interior through a vent which is opened in accordance with a predetermined air discharge mode among the remaining vents.

In the cooling / heating mode operated as described above, the air temperature and air volume are controlled by the opening degree of the rear seat temperature control door 128 with respect to the inlet of the cold air bypass passage P3 and the inlet of the warm air passage P2. Accordingly. In addition, in the case of the warmth control door 126, the temperature control of the warmth through the heater core (H) is mainly controlled in accordance with the opening degree adjustment to the communication path 124. Even in this case, since the cold air flowing toward the console vent 119 through the cold air bypass passage P3 is affected by the temperature of the heater core H by the leakage warmer discharge passage 140, the console vent On the side (119), it is possible to smoothly perform the temperature control by the mixing of the cold air, the warm air flowing in the console vent 119 through the warm passage (P2) and the communication passage 124.

According to the vehicle air conditioner according to the present invention configured as described above, because the cold air bypass passage (P3) is isolated from the warm passage (P2) in which the heater core (H) is installed by the leakage warmer discharge passage (140). In addition, the temperature of the cold air flowing to the console vent 119 through the cold air bypass passage P3 may be effectively blocked from rising by the heater core H. Therefore, cooling performance can be improved.

In addition, the warm air flowing through the warm passage (P2), which leaks into the gap between the left and right fitting portions 102 of the air conditioning case 100, flows into the leak warmer discharge passage 140 and is discharged to the outside of the air conditioning case 100. By doing so, since the cold air flowing in the cold air bypass passage P3 can be more effectively blocked from being affected by the warm air, the cooling performance can be further improved.

In addition, since the cold air bypass passage P3 is formed side by side with the bottom of the air-conditioning case 100 without being influenced by the installation structure of the heater core H and without air flow resistance, the cold air of sufficient air volume. Can be discharged to the rear seat of the vehicle.

Claims (2)

Defrost vents 112, face vents 114, and floor vents 116 for the front seats are installed at the exit, and the left and right cases are formed on the left and right sides. An air conditioning case (100) having (100a, 100b); An evaporator (E) and a heater core (H) installed in an internal flow path of the air conditioning case; A temperature control door 120 for the front seat for adjusting the opening degree of the outlet of the cold air passage P1 and the warm passage P2 of the air conditioning case; A floor vent 118 for communicating with the console vent 119 installed at the rear of the heater core and the floor vent for the front seat; A communication passage 124 is formed in communication with the warm passage and the console vent and an opening degree is controlled by a warmth control door 126, and partitions the heater core downstream warm passage, floor vents, and console vent. A wall 122; A cold air bypass passage (P3) installed along the bottom of the heater core in the air conditioning case to communicate the cold air passage with the console vent; In the vehicle air conditioner comprising: a rear seat temperature control door 128 for adjusting the opening degree of the inlet of the cold air bypass passage and the inlet of the warm passage; An air conditioner is disposed between the warm passage and the cold air bypass passage to discharge the air leaked from the warm passage through the left and right coupling portions 102 of the air conditioning case to the outside while isolating the cold air bypass passage from the warm passage. The vehicle air conditioner, characterized in that the leakage warmth passage 140 penetrates to the left and right of the case. The method of claim 1, An internal flow path of the air conditioning case 100 is divided into left and right flow paths by a left and right separation wall 110.

Images