KR102456822B1 - Air conditioning system for vehicle - Google Patents

Abstract

The present invention relates to an air conditioning system for a vehicle, and more particularly, an air conditioning module composed of an air conditioning case and a blower is disposed on the engine room side with respect to a dash panel, and the cold and hot air discharged from the air conditioning case is distributed into the interior of the vehicle. The distribution duct is a system disposed inside the vehicle interior based on the dash panel, and by forming a shielding means on the side of the cold air outlet and the warm air outlet for discharging the cold and hot air of the air conditioning case to the outside, the outside air is cooled by the wind pressure during driving. It relates to an air conditioning system for a vehicle that can prevent backflow to a discharge port and a warm air outlet, thereby improving cooling and heating performance through smooth heat discharge through the cold air outlet and the warm air outlet.

Description

Air conditioning system for vehicle

The present invention relates to an air conditioning system for a vehicle, and more particularly, an air conditioning module composed of an air conditioning case and a blower is disposed on the engine room side with respect to a dash panel, and the cold and hot air discharged from the air conditioning case is distributed into the interior of the vehicle. The distribution duct is a system disposed inside the vehicle interior based on the dash panel, and by forming a shielding means on the side of the cold air outlet and the warm air outlet for discharging the cold and hot air of the air conditioning case to the outside, the outside air is cooled by the wind pressure during driving. It relates to an air conditioning system for a vehicle that can prevent backflow to a discharge port and a warm air outlet, thereby improving cooling and heating performance through smooth heat discharge through the cold air outlet and the warm air outlet.

As shown in FIG. 1, a general vehicle air conditioner system generally includes a compressor (1) for compressing and sending out refrigerant, a condenser (2) for condensing a high-pressure refrigerant sent from the compressor (1), For example, an expansion valve 3 that throttles the refrigerant condensed and liquefied in the condenser 2 , and the low-pressure liquid refrigerant throttled by the expansion valve 3 exchanges heat with air blown into the vehicle interior. It is composed of a refrigeration cycle in which an evaporator (4) that cools the air discharged into the room due to the endothermic action by the latent heat of evaporation of the refrigerant by evaporating the refrigerant is connected by a refrigerant pipe. to cool

When the cooling switch (not shown) of the air conditioner system is turned on, first, the compressor 1 is driven by the power of the engine or motor while sucking and compressing the low-temperature and low-pressure gaseous refrigerant to convert the high-temperature and high-pressure gaseous state into the condenser 2 ), and the condenser 2 condenses the gaseous refrigerant into a high-temperature and high-pressure liquid by exchanging heat with the outside air. Then, the liquid refrigerant delivered from the condenser 2 in a high-temperature and high-pressure state is rapidly expanded by the throttling action of the expansion valve 3 and is sent to the evaporator 4 in a low-temperature and low-pressure wet state, and the evaporator 4 is the The refrigerant exchanges heat with air blown into the vehicle interior by a blower (not shown). Accordingly, the refrigerant evaporates in the evaporator 4 and is discharged in a gaseous state of low temperature and low pressure, and is again sucked into the compressor 1 to recirculate the refrigeration cycle as described above.

The evaporator is installed inside the air conditioning case installed inside the vehicle interior to play a cooling role, that is, the liquid refrigerant circulating in the evaporator 4 while the air blown by a blower (not shown) passes through the evaporator 4 . It is cooled by the latent heat of evaporation and discharged into the vehicle interior in a cooled state.

In addition, the interior of the vehicle is heated using a heater core (not shown) installed inside the air conditioning case and circulating engine coolant, or an electric heating type heater (not shown) installed inside the air conditioning case. .

On the other hand, the condenser 2 is installed on the front side of the vehicle to radiate heat while exchanging heat with air.

Recently, an air conditioning system that performs cooling and heating using only a refrigeration cycle, that is, a heat pump system has been developed. As shown in FIG. 2 , a cold air passage 11 and a A structure in which the hot air passage 12 is divided into left and right, an evaporator 4 for cooling is installed in the cold air passage 11, and a condenser 2 for heating is installed in the warm air passage 12 to be.

At this time, a plurality of air outlets 15 for supplying air to the inside of the vehicle and a plurality of air outlets 16 for discharging air to the outside of the vehicle are formed at the outlet side of the air conditioning case 10 .

In addition, blowers 20 that operate individually are installed at each inlet side of the cold air passage 11 and the hot air passage 12 .

In the above-described air conditioning system, the air conditioning case 10 and the blower 20 are installed inside the vehicle interior based on a dash panel (not shown) that divides the interior of the vehicle and the engine room.

Therefore, in the cooling mode, the cold air cooled while passing through the evaporator 4 of the cold air passage 11 is discharged into the vehicle interior through the air outlet 15 to be cooled, and at this time, the condenser ( 2) The warm air heated while passing through is discharged to the outside of the vehicle through the air outlet 16 .

In the heating mode, hot air heated while passing through the condenser 2 of the hot air passage 12 is discharged into the vehicle interior through the air outlet 15 to heat, and at this time, the evaporator 4 of the cold air passage 11 ), the cool air cooled while passing through the air outlet 16 is discharged to the outside of the vehicle.

However, in the conventional air conditioning system, in the cooling mode, the hot hot air passing through the condenser must be discharged to the outside through the air outlet 16, and in the heating mode, the cold cold air passing through the evaporator must be discharged to the air outlet 16 ), but in this process, there is a problem that external air flows backward through the air outlet 16 due to the influence of wind pressure during driving, and as a result, heat is not discharged smoothly through the air outlet 16. There was a problem that the cooling and heating performance was lowered.

An object of the present invention to solve the above problems is that the air conditioning module composed of the air conditioning case and the blower is arranged on the engine room side with respect to the dash panel, and the distribution duct for distributing the cold and hot air discharged from the air conditioning case into the interior of the vehicle is In the system arranged inside the vehicle interior based on the dash panel, by forming a shielding means on the side of the cold air outlet and the warm air outlet for discharging the cold and hot air of the air conditioning case to the outside, the outside air is released from the cold air outlet and the warm air by the wind pressure during driving. An object of the present invention is to provide an air conditioning system for a vehicle capable of preventing backflow to an outlet and thereby improving cooling and heating performance through smooth heat dissipation through the cold air outlet and the warm air outlet.

The present invention for achieving the above object is an air conditioning system for a vehicle, comprising an air conditioning case having a cold air passage and a hot air passage formed therein, and the air conditioning case includes a cold air outlet for discharging cold air passing through the evaporator to the outside; A hot air outlet for discharging the warm air passing through the condenser to the outside is formed, and a shielding means for preventing reverse flow of outside air to the cold air outlet and the warm air outlet is provided on the outside of the air conditioning case.

According to the present invention, the air conditioning module composed of the air conditioning case and the blower is disposed on the engine room side with respect to the dash panel, and the distribution duct for distributing the cold and hot air discharged from the air conditioning case into the vehicle interior is located inside the vehicle interior with respect to the dash panel. In the arranged system, by forming a shielding means on the side of the cold air outlet and the hot air outlet for discharging the cold and hot air of the air conditioning case to the outside, the outside air is prevented from flowing back into the cold air outlet and the warm air outlet due to wind pressure during driving, Accordingly, it is possible to improve cooling and heating performance through smooth heat dissipation through the cold air outlet and the warm air outlet.

1 is a configuration diagram showing a refrigeration cycle of a general vehicle air conditioner system;
2 is a view showing a conventional vehicle air conditioning system;
3 is a perspective view showing an air conditioning system for a vehicle according to the present invention;
4 is a perspective view showing a state in which the distribution duct is separated in FIG. 3;
5 is a perspective view showing an air conditioning module in an air conditioning system for a vehicle according to the present invention;
Figure 6 is a perspective view seen from the side of the bet inlet duct of Figure 5;
7 is a cross-sectional view taken along line AA of FIG. 6;
8 is a cross-sectional view showing a cooling mode in the vehicle air conditioning system according to the present invention;
9 is a cross-sectional view showing a heating mode in the vehicle air conditioning system according to the present invention;
10 is a cross-sectional view illustrating a mixed mode in the vehicle air conditioning system according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown, in the vehicle air conditioning system according to the present invention, a compressor (not shown) -> condenser 102 -> expansion means (not shown) -> evaporator 104 is connected to a refrigerant circulation line (not shown), , a system that performs cooling through the evaporator 104 and heating through the condenser 102 .

First, the compressor is driven by receiving power from a power source (engine or motor, etc.), sucks and compresses the low-temperature, low-pressure gaseous refrigerant discharged from the evaporator 104, and discharges it as a high-temperature and high-pressure gas.

The condenser 102 exchanges heat with the high-temperature and high-pressure gaseous refrigerant discharged from the compressor and flowing through the condenser 102 and the air passing through the condenser 102, and in this process, the refrigerant is condensed, The air is heated and turned into warm air.

The condenser 102 has a structure in which a heat dissipation fin (not shown) is installed after a refrigerant purification line (refrigerant pipe) is configured in a zigzag form, or a plurality of tubes (not shown) are connected and installed between a pair of header tanks and It can be configured in a structure in which a heat dissipation fin is installed between each tube.

Therefore, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor is condensed by heat exchange with air while flowing along the zigzag-shaped refrigerant circulation line or a plurality of tubes. will become

Then, the expansion means (not shown) rapidly expands the liquid refrigerant discharged from the condenser 102 and flowing through a throttling action, and sends it to the evaporator 104 in a wet state of low temperature and low pressure.

As the expansion means, an expansion valve or an orifice structure may be used.

The evaporator 104 heats and evaporates the low-pressure liquid refrigerant discharged from the expansion means and flowing with the air in the air conditioning case 110, thereby cooling the air by endothermic action by the latent heat of evaporation of the refrigerant.

Subsequently, the low-temperature and low-pressure gaseous refrigerant evaporated and discharged from the evaporator 104 is again sucked into the compressor to recirculate the cycle as described above.

In addition, in the refrigerant circulation process as described above, in the cooling of the vehicle interior, the air blown from the blower 130 flows into the air conditioning case 110 and passes through the evaporator 104 while circulating the inside of the evaporator 104 . After being cooled by the latent heat of evaporation of the liquid refrigerant and cooled, it is discharged into the vehicle interior through the distribution duct 200,

The interior of the vehicle is heated by heat radiation of high-temperature and high-pressure gaseous refrigerant circulating inside the condenser 102 while the air blown from the blower 130 flows into the air conditioning case 110 and passes through the condenser 102 . It is made by discharging into the vehicle interior through the distribution duct 200 after being heated.

In addition, the air conditioning system for a vehicle according to the present invention is configured by coupling the air conditioning module 100 and the distribution duct 200 to each other.

The air conditioning module 100 includes an air conditioning case 110 in which a cold air passage 111 in which the evaporator 104 is installed and a hot air passage 112 in which the condenser 102 is installed are partitioned, and the air conditioning case 110 ) is composed of a blower 130 for blowing air to the cold air passage 111 and the warm air passage 112 of the.

The distribution duct 200 is connected to the outlet 110b of the air conditioning case 110, and a mode door ( 230) is provided.

In addition, the air conditioning module 100 and the distribution duct 200 are divided based on the dash panel 300 dividing the interior of the vehicle and the engine room.

That is, the air conditioning module 100 is disposed on the engine room side with respect to the dash panel 300 , and the distribution duct 200 is disposed on the inside of the vehicle interior with respect to the dash panel 300 .

As such, the air conditioning module 100 including the air conditioning case 110 and the blower 130 in which the evaporator 104 and the condenser 102 are installed is disposed on the engine room side with respect to the dash panel 300, and the air The distribution duct 200 having the mode door 230 to distribute to the interior is arranged inside the vehicle interior based on the dash panel 300 and coupled to each other, so that the air conditioning module 100 that causes noise is placed on the engine room side. It is possible to reduce the noise and vibration in the vehicle interior, and to maximize the space in the vehicle interior compared to the existing system by arranging only the distribution duct 200 inside the vehicle interior.

In addition, the dash panel 300 has a through portion 310 formed therethrough. As shown in the drawing, one through portion 310 may be formed, or more than one through portion 310 may be formed.

In addition, the shape of the through portion 310 may be formed in various shapes as well as a rectangular structure as shown in the drawings.

In addition, the air conditioning module 100 disposed on the engine room side and the distribution duct 200 disposed on the inside of the vehicle are coupled to each other through the through part 310 , that is, the air conditioning module 100 disposed on the engine room side. The module 100 and the distribution duct 200 are coupled to each other and connected.

In other words, the outlet 110b of the air conditioning case 110 of the air conditioning module 100 passing through the through part 310 of the dash panel 300 and the air inlet 210 of the distribution duct 200 are coupled to each other. At this time, the air inlet 210 of the distribution duct 200 is inserted into the outlet 110b of the air conditioning case 110 and coupled thereto.

And, in the air conditioning case 110, a cold air passage 111 and a hot air passage 112 are partitioned by a partition wall 113 that divides the inside into upper and lower portions.

That is, the cold air passage 111 is disposed below the partition wall 113 , and the warm air passage 112 is disposed above the partition wall 113 .

At this time, the cold air passage 111 and the warm air passage 112 are partitioned from the inlet 110a of the air conditioning case 110 by the partition wall 113 and the outlet 110b of the air conditioning case 110 ). formed to join in

That is, the partition wall 114 is omitted at the outlet 110b of the air conditioning case 110 so that the cold air passage 111 and the warm air passage 112 join.

In addition, the evaporator 104 is installed in the cold air passage 111 , and the condenser 102 is installed in the warm air passage 112 . In addition, the condenser 102 and the evaporator 104 are also disposed vertically due to the top and bottom arrangement of the hot air passage 112 and the cold air passage 111 .

In other words, the condenser 102 and the evaporator 104 are disposed in a direction perpendicular to the axial direction of the motors 133 and 137 of the first and second blowers 130a and 130b to be described later.

Meanwhile, cold air flows through the cold air passage 111 in which the evaporator 104 is installed, and the warm air flows in the warm air passage 112 in which the condenser 102 is installed.

In addition, a bypass passage 114 for communicating the cold air passage 111 and the hot air passage 112 is formed through the partition wall 113 between the evaporator 104 and the condenser 102, and the bypass A bypass door 115 for opening and closing the bypass passage 114 is installed in the passage 114 .

The bypass passage 114 bypasses a part of the cold air that has passed through the evaporator 104 in the cold air passage 111 toward the warm air passage 112, and the bypass door 115 is closed in the cooling mode. The bypass passage 114 is closed, and in the heating mode, the bypass passage 114 is selectively opened and closed.

Accordingly, in the cooling mode in a state in which the bypass door 115 closes the bypass passage 114 , the cold air cooled by the evaporator 104 is supplied into the vehicle interior while flowing through the cold air passage 111 to provide cooling. At this time, the air flowing through the hot air passage 112 is discharged to the outside, and in the heating mode, the warm air heated by the condenser 102 while flowing through the warm air passage 112 is supplied into the vehicle interior to perform heating. And at this time, the air flowing through the cold air passage 111 is discharged to the outside.

In addition, in the heating mode, when dehumidification is required in the vehicle interior, the bypass door 115 opens the bypass passage 114, and in this case, the cold air passage 111 flows through the evaporator 104. A portion of the cooled and dehumidified cold air is bypassed to the warm air passage 112 through the bypass passage 114 and then supplied into the vehicle interior to perform dehumidification heating.

In addition, the condenser 102 is installed on the downstream side of the bypass passage 114 in the air flow direction in the warm air passage 112 . Accordingly, the cold air heated while passing through the evaporator 104 may be supplied to the condenser 102 side through the bypass passage 114 .

On the other hand, the evaporator 104 is installed on the upstream side of the bypass passage 114 in the air flow direction in the cold air passage 111 .

In addition, one side of the cold air passage 111 of the air conditioning case 110 has a cold air outlet 119a for discharging the cold air that has passed through the evaporator 104 to the outside, and the cold air outlet 119a and the cold air passage 111 ) is provided with a cold wind mode door 120 that opens and closes,

On one side of the warm air passage 112 of the air conditioning case 110, a warm air outlet 119b for discharging the hot air that has passed through the condenser 102 to the outside, the warm air outlet 119b and the warm air passage 112 are provided. A warm air mode door 121 to open and close is provided.

The cold air outlet 119a and the cold air mode door 120 are provided on the downstream side of the evaporator 104 in the cold air passage 111, and the warm air outlet 119b and the warm air mode door 121 are connected to the hot air It is provided on the downstream side of the condenser 102 in the passage 112 .

The air discharged through the cold air outlet 119a and the warm air outlet 119b is discharged to the outside of the vehicle through the engine room.

Accordingly, in the cooling mode, the cold air mode door 120 opens the cold air passage 111, and the warm air mode door 121 opens the warm air outlet 119b, thereby allowing the cold air passage 111 to flow. After being cooled while passing through the evaporator 104, the air is discharged into the vehicle interior through the distribution duct 200 to be cooled. At this time, the air flowing through the hot air passage 112 is heated while passing through the condenser 102. Then, it is discharged to the outside through the warm air outlet (119b).

In the heating mode, the warm air mode door 121 opens the hot air passage 112, and the cold air mode door 120 opens the cold air outlet 119a, so that the air flowing through the hot air passage 112 is opened. is heated while passing through the condenser 102 and then discharged into the vehicle interior through the distribution duct 200 to be heated. It is discharged to the outside through the discharge port (119a).

In addition, a shielding means 125 for preventing the reverse flow of external air to the cold air outlet 119a and the warm air outlet 119b is provided on the outside of the air conditioning case 110 .

That is, the shielding means 125 prevents the outside air from flowing back into the air conditioning case 110 through the cold air outlet 119a and the warm air outlet 119b due to the wind pressure during driving, so that the cold air Cooling and heating performance can be improved through smooth heat dissipation through the outlet 119a and the warm air outlet 119b.

The shielding means 125, the cold air outlet 119a and the hot air outlet 119b on the outer surface of the air conditioning case 110 in which the cold air outlet 119a and the hot air outlet 119b are located. It is made by forming a cover plate (126).

The cover plate 126 is formed to be larger than the area of the cold air outlet 119a or the warm air outlet 119b.

That is, the cover plate 126 is spaced apart from the cold air outlet 119a and the warm air outlet 119b by a predetermined interval, and both ends in the longitudinal direction are connected to the air conditioning case 110, and both ends in the width direction are formed to be open.

Therefore, the front part of the cold air outlet 119a and the warm air outlet 119b is shielded through the cover plate 126 to block the reverse flow of outside air to the cold air outlet 119a and the warm air outlet 119b, and , the air discharged through the cold air outlet 119a and the warm air outlet 119b from the inside of the air conditioning case 100 is smoothly discharged through the open portion of both ends of the cover plate 126 .

A blower 130 is installed at the inlet 110a side of the air conditioning case 110 to blow air into the cold air passage 111 and the warm air passage 112 .

The blower 130 includes a first blower 130a connected to the inlet 111a of the cold air passage 111 of the air conditioning case 110 to blow air toward the cold air passage 111. , a discharge port 138 is connected to the inlet 112a side of the hot air passage 112 of the air conditioning case 110 and consists of a second blower 130b that blows air toward the warm air passage 112 side.

The first blower 130a and the second blower 130b are disposed to face each other while being spaced apart from each other in the width direction of the vehicle.

The first blower 130a includes a scroll case 131 having the discharge port 134 so as to be connected to the inlet 111a side of the cold air passage 111 of the air conditioning case 110, and the scroll case 131. A blower fan 132 rotatably installed inside the It is installed and consists of a motor 133 for rotating the blowing fan (132).

The inlet ring 131a is formed on one side of the scroll case 131 on which the intake duct 140 is located.

The second blower 130b includes a scroll case 135 having the outlet 138 to be connected to the inlet 112a side of the hot air passage 112 of the air conditioning case 110, and the scroll case 135. A blower fan 136 rotatably installed inside the It is installed and consists of a motor 137 for rotating the blowing fan (136).

The inlet ring 135a is formed on one side of the scroll case 135 on which the intake duct 140 is located.

The first blower (130a) and the second blower (130b) are installed so that the respective motors (133, 137) rotational shafts are in the same direction.

In addition, the inlet ring 131a of the first blower 130a and the inlet ring 135a of the second blower 130b are formed to face each other.

On the other hand, the scroll cases 131 and 135 of the first and second blowers 130a and 130b are formed in a scroll shape with the blowing fans 132 and 136 installed therein, respectively. Accordingly, the cross-sectional area of the air passages around the blowing fans 132 and 136 inside the scroll cases 131 and 135 gradually increases from the scroll start point to the end point.

In addition, the discharge ports 134 and 138 of the first and second blowers 130a and 130b are formed to extend from the end points of the scroll shapes of the scroll cases 131 and 135 to be connected to the cold and hot air passages 111 and 112 .

On the other hand, the scroll case 131 of the first blower 130a and the scroll case 135 of the second blower 130b are installed so that the scroll directions are opposite to each other, and the scroll case 131 of the first blower 130a. ) is connected to the cold air passage 111 located below the partition wall 113 , and the scroll case 135 of the second blower 130b has a warm air passage 112 located above the partition wall 113 . is connected with

And, between the first blower (130a) and the second blower (130b), the first and second blowers (130a, 130b) to supply the internal and external air to the first and second blowers (130a, 130b), respectively. ) and the intake duct 140 connected in communication with it is installed.

That is, the intake duct 140 is provided between the first blower 130a and the second blower 130b, so that the first and second blowers 130a and 130b are connected to the one intake duct ( 140) will be used in common.

As such, by installing the intake duct 140 between the first blower 130a and the second blower 130b, one intake duct in a system using two blowers 130a and 130b that operate individually, respectively. Since 140 is used, space efficiency can be maximized, thereby reducing the size and cost of the system.

The intake duct 140 includes an outside air inlet 141 for introducing outside air, an inside air inlet 142 for introducing the bet, the inside air inlet 142 and the outside air inlet 141 and the first blower 130a. A first indoor/outdoor air conversion door 147 that is installed to open and close a passage for communicating with the first blower 130a and selectively introduces the inside and outside air 147, the inside and outside air inlet 142 and the outside air inlet 141 and the The second blower (130b) is installed to open and close the passage communicating with the second blower (130b) side is made with a second internal and external air switching door 148 for selectively introducing the internal and external air.

That is, the first indoor/outdoor air conversion door 147 is installed between the outdoor air inlet 141 and the indoor air inlet 142 on the upstream side of the inlet ring 131a of the first blower 130a, and the inlet A passage connecting the ring 131a and the outdoor air inlet 141 and a passage communicating the inlet ring 131a and the inside air inlet 142 are selectively opened and closed.

The second indoor/outdoor air conversion door 148 is installed between the outdoor air inlet 141 and the indoor air inlet 142 on the upstream side of the inlet ring 135a of the second blower 130b, and the inlet ring ( 135a) and a passage communicating the outdoor air inlet 141 and a passage communicating the inlet ring 135a and the indoor air inlet 142 are selectively opened and closed.

On the other hand, the outdoor air inlet 141 is formed on the upper portion of the intake duct 140, and the indoor air intake 142 is preferably formed on the lower portion of the intake duct 140, but the position can be changed.

The first indoor/outdoor air conversion door 147 and the second indoor/outdoor air conversion door 148 are also formed of a dome-shaped door.

In this way, one intake duct 140 is installed between the first and second blowers 130a and 130b, and the first and second internal and external air switching doors 147 and 148 are installed inside the intake duct 140. , the internal and external air flowing into the internal and external air inlets 141 and 142 of the intake duct 140 may be selectively supplied to the first and second blowers 130a and 130b.

Meanwhile, an air filter (not shown) is installed in each of the outdoor air inlet 141 and the indoor air inlet 142 to remove impurities contained in the air flowing into the outdoor air inlet 141 and the indoor air inlet 142. .

In addition, the outside air inlet 141 of the intake duct 140 communicates with the outside of the vehicle, and the inside air inlet 142 of the intake duct 140 communicates with the interior of the vehicle.

At this time, on the outside of the air conditioning case 110, the inside of the inside inlet 142 and the inside of the vehicle inlet duct 143 for connecting the inside is installed.

That is, the bet inlet duct 143 is installed on the outer surface of the air conditioning case 110 to communicate the inside of the car with the inlet inlet 142 of the intake duct 140. At this time, the bet inlet duct 143 ), the inlet 143a passes through the dash panel 300 to communicate with the interior of the vehicle.

At this time, the inlet (143a) of the inlet inlet duct (143) and the outlet (110b) of the air conditioning case (110) are arranged side by side to pass through the through portion (310).

By arranging the inlet 143a of the inside air inlet duct 143 and the outlet 110b of the air conditioning case 110 side by side to pass through the through part 310, the dash panel for installation of the air conditioning system It is sufficient to form only one through-portion 310 in 300 .

In addition, the distribution duct 200 includes an air inlet 210 connected to the outlet 110b of the air conditioning case 110, and distributing the air introduced into the air inlet 210 to a specific location in the vehicle interior. It consists of a plurality of air outlets 220 and the mode door 230 for controlling the opening degree of the plurality of air outlets 220 .

The plurality of air outlets 220 include a defrost vent 221 and a face vent 222 formed by being partitioned from each other on the upper portion of the distribution duct 200 , and the dash panel 300 in the distribution duct 200 . ) and a floor vent 223 formed on the adjacent side.

At this time, for the comfort of occupants in the vehicle, the floor vent 223 discharges warmer air than the face vent 222, and discharges cooler air than the floor vent 223 through the face vent 222, In the present invention, since the hot air flows on the upper portion of the partition wall 113 in the air conditioning case 110 and the cold air flows on the lower portion of the partition wall 113, the dash panel ( 300) and the side adjacent to the floor vent 223 is formed.

That is, in the case of the existing system, the floor vent is formed on the side far from the dash panel 300 rather than the side adjacent to the dash panel 300 , but in the distribution duct 200 of the present invention, the floor vent is formed on the side adjacent to the dash panel 300 . By forming the 223, as shown in FIG. 10, the hot air flowing along the hot air passage 112 in the upper part of the air conditioning case 110 and the cold air flowing along the cold air passage 111 in the lower part in the air conditioning case 110, as shown in FIG. As they flow into the distribution duct 200, they are mixed with each other, but warmer air is discharged to the floor vent 223 close to the warm air in the air flow stream, and cooler air is discharged to the face vent 222 close to the cold air. This can improve indoor comfort.

On the other hand, the defrost vent 221 discharges air toward the windshield in the vehicle interior, the face vent 222 discharges air toward the face of an occupant in the front seat of the vehicle interior, and the floor vent 223 discharges air toward the occupant in the vehicle interior. air is expelled toward the feet of the

In addition, the mode door 230 is installed in the defrost vent 221 , the face vent 222 , and the floor vent 223 , respectively, to adjust the opening degree of each vent according to the air discharge mode.

Meanwhile, an electric heating type heater 240 may be installed inside the distribution duct 200 .

Hereinafter, a refrigerant flow process of the vehicle air conditioning system according to the present invention will be described.

First, the high-temperature and high-pressure gaseous refrigerant compressed and discharged from the compressor is introduced into the condenser 102 .

The gaseous refrigerant introduced into the condenser 102 exchanges heat with air passing through the condenser 102 , and in this process, the refrigerant is cooled and phase-changed into a liquid phase.

The liquid refrigerant discharged from the condenser 102 is introduced into the expansion means and expanded under reduced pressure.

The refrigerant expanded under reduced pressure in the expansion means becomes an atomized state of low temperature and low pressure and flows into the evaporator 104 , and the refrigerant introduced into the evaporator 104 exchanges heat with air passing through the evaporator 104 and evaporates. .

Thereafter, the low-temperature and low-pressure refrigerant discharged from the evaporator 104 is introduced into the compressor and then recirculated in the refrigeration cycle as described above.

Hereinafter, the air flow process in the cooling mode, the heating mode, and the mixing mode will be described.

go. cooling mode

In the cooling mode, as shown in FIG. 8, the cold air mode door 120 operates to open the cold air passage 111, and the warm air mode door 121 operates to open the warm air outlet 119b. do.

And, depending on the bet inflow mode or the outside air inflow mode, the first and second internal and external air switching doors 147 and 148 operate to selectively supply the bet or outside air to the first and second blowers 130a and 130b.

Therefore, when the first and second blowers 130a and 130b are operated, bet or outside air flowing into the intake duct 140 is sucked into the first and second blowers 130a and 130b and then the cold air passage ( 111) and the hot air passage 112, respectively.

The air supplied to the cold air passage 111 flows to the distribution duct 200 after being cooled while passing through the evaporator 104, and then the air outlet 220 opened by the mode door 230 according to the air discharge mode. It is discharged into the interior of the vehicle and cooled.

At this time, the air supplied to the warm air passage 112 is heated while passing through the condenser 102 , and then passes through the warm air outlet 119b and then out of the vehicle through the open portion of both ends of the cover plate 126 . is emitted

B. Heating mode

In the heating mode, as shown in FIG. 9, the warm air mode door 121 operates to open the hot air passage 112, and the cold air mode door 120 operates to open the cold air outlet 119a. .

And, depending on the bet inflow mode or the outside air inflow mode, the first and second internal and external air switching doors 147 and 148 operate to selectively supply the bet or outside air to the first and second blowers 130a and 130b.

Therefore, when the first and second blowers 130a and 130b are operated, bet or outside air flowing into the intake duct 140 is sucked into the first and second blowers 130a and 130b and then the cold air passage ( 111) and the hot air passage 112, respectively.

The air supplied to the hot air passage 112 is heated while passing through the condenser 102 and then flows to the distribution duct 200, and then the air outlet 220 opened by the mode door 230 according to the air discharge mode. It is discharged into the interior of the vehicle and heated.

At this time, the air supplied to the cold air passage 111 is cooled while passing through the evaporator 104 , and then passes through the cold air outlet 119a and then discharged to the outside of the vehicle through the open portions of both ends of the cover plate 126 . do.

All. mix mode

In the mixed mode, as shown in FIG. 10 , the cold air mode door 120 opens the cold air passage 111 , and the warm air mode door 121 operates to open the warm air passage 112 .

And, depending on the bet inflow mode or the outside air inflow mode, the first and second internal and external air switching doors 147 and 148 operate to selectively supply the bet or outside air to the first and second blowers 130a and 130b.

Therefore, when the first and second blowers 130a and 130b are operated, bet or outside air flowing into the intake duct 140 is sucked into the first and second blowers 130a and 130b and then the cold air passage ( 111) and the hot air passage 112, respectively.

The air supplied to the cold air passage 111 flows to the distribution duct 200 after being cooled while passing through the evaporator 104, and the air supplied to the hot air passage 112 is heated while passing through the condenser 102. After that, it flows into the distribution duct 200 .

Subsequently, the cold air and warm air flowing into the distribution duct 200 are mixed with each other and then discharged into the vehicle interior through the air outlet 220 opened by the mode door 230 according to the air discharge mode.

100: air conditioning module
102: condenser 104: evaporator
110: air conditioning case 111: cold air passage
112: hot air passage 113: partition wall
114: bypass passage 115: bypass door
119a: cold air outlet 119b: warm air outlet
120: cold air mode door 121: warm air mode door
125: shielding means 126: cover plate
130: blower 130a: first blower
130b: second blower 131,135: scroll case
132,136: blowing fan 133,137: motor
134,138: outlet
140: intake duct 141: outdoor air inlet
142: bet inlet 143: bet inlet duct
147: first inside/outside air conversion door 148: second inside/outside air conversion door
200: distribution duct 210: air inlet
220: air outlet 221: defrost vent
222: face vent 223: floor vent
230: mode door 300: dash panel
310: penetrating part

Claims (13)

In the vehicle air conditioning system,
An air conditioning case 110 in which a cold air passage 111 and a hot air passage 112 are formed is provided,
In the air conditioning case 110, a cold air outlet 119a for discharging the cold air of the cold air passage 111 to the outside, and a warm air outlet 119b for discharging the hot air from the hot air passage 112 to the outside are formed. becomes,
A shielding means 125 for preventing the reverse flow of external air to the cold air outlet 119a and the warm air outlet 119b is provided on the outside of the air conditioning case 110,
The shielding means 125,
A cover plate 126 for covering the cold air outlet 119a and the warm air outlet 119b is formed on the outer surface of the air conditioning case 110 in which the cold air outlet 119a and the warm air outlet 119b are located. is made,
The cover plate 126 is spaced apart from the cold air outlet 119a and the warm air outlet 119b by a predetermined interval, and both ends in the longitudinal direction are connected to the air conditioning case 110, and both ends in the width direction are open. An air conditioning system for a vehicle, characterized in that. delete The method of claim 1,
The cover plate 126 is a vehicle air conditioning system, characterized in that formed larger than the area of the cold air outlet (119a) or the hot air outlet (119b). delete The method of claim 1,
A distribution duct 200 for distributing the cold and hot air discharged from the air conditioning case 110 to a specific location in the vehicle according to the air discharge mode is connected to the outlet 110b of the air conditioning case 110, characterized in that Vehicle air conditioning system. 6. The method of claim 5,
The air conditioning system for a vehicle, characterized in that the air conditioning case (110) is disposed on the engine room side with respect to the dash panel (300) that divides the interior of the vehicle and the engine room, and the distribution duct (200) is disposed on the inside of the vehicle. 7. The method of claim 6,
A through part 310 is formed in the dash panel 300,
The air conditioning system for a vehicle, characterized in that the air conditioning case (110) and the distribution duct (200) are coupled to each other through the through part (310). The method of claim 1,
A partition wall 113 dividing the cold air passage 111 and the hot air passage 112 is formed inside the air conditioning case 110,
The cold air passage (111) is disposed below the partition wall (113), and the hot air passage (112) is disposed above the partition wall (113). The method of claim 1,
In the air conditioning case 110, a cold air mode door 120 for opening and closing the cold air outlet 119a and the cold air passage 111, and a warm air mode for opening and closing the warm air outlet 119b and the hot air passage 112 An air conditioning system for a vehicle, characterized in that the door 121 is provided. 7. The method of claim 6,
The distribution duct 200,
an air inlet 210 connected to the outlet 110b of the air conditioning case 110;
a plurality of air outlets 220 for distributing the air introduced into the air inlet 210 to specific positions in the vehicle interior;
and a mode door (230) for controlling the opening degree of the plurality of air outlets (220). 11. The method of claim 10,
The plurality of air outlets 220 include a defrost vent 221 and a face vent 222 formed by being partitioned from each other on the upper portion of the distribution duct 200 , and the dash panel 300 in the distribution duct 200 . ) and a floor vent (223) formed on the adjacent side, characterized in that the vehicle air conditioning system. The method of claim 1,
An evaporator (104) is installed in the cold air passage (111), and a condenser (102) is installed in the warm air passage (112). The method of claim 1,
The air conditioning system for a vehicle, characterized in that the air conditioning case (110) is connected to a blower (130) for blowing air to the cold air passage (111) and the hot air passage (112) is installed.

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