KR20170086722A - Air conditining system for vehicle - Google Patents

Abstract

The present invention relates to a vehicle air conditioning system, and more particularly, to an air conditioning module including an air conditioner case and a blower device in which a cold air passage and a warm air passage are formed, , A distribution duct for distributing warm air to the inside of the vehicle is disposed in the interior of the vehicle with respect to the dash panel, and a bottleneck portion in which the passage is narrowed by joining the cold air passage and the warm air passage to the air conditioning case is formed, The air can be smoothly mixed while being compressed and warm air can be compressed to uniformly discharge the sufficiently mixed air and the size of the outlet of the air conditioner case can be reduced due to the bottleneck structure, A vehicle air conditioning system capable of reducing the size of the penetration of the panel, thereby enhancing the strength of the dash panel The.

Description

[0001] Air conditioning system for vehicle [

The present invention relates to a vehicle air conditioning system, and more particularly, to an air conditioning module including an air conditioner case and a blower device in which a cold air passage and a warm air passage are formed, And a distribution duct for distributing warm air to the passenger compartment is disposed inside the passenger compartment based on a dash panel, and a bottleneck portion in which the passageway is narrowed by joining the cold air passage and the warm air passage to the air- will be.

1, a general automotive air conditioning system generally includes a compressor 1 for compressing and sending a refrigerant, a condenser 2 for condensing high-pressure refrigerant sent from the compressor 1, For example, an expansion valve 3 for condensing the refrigerant condensed and liquefied in the condenser 2 and a low-pressure liquid refrigerant throttled by the expansion valve 3 for heat exchange with the air blown toward the interior of the vehicle And an evaporator (4) for cooling the air discharged into the room by the endothermic effect of the latent heat of evaporation of the refrigerant by evaporating the refrigerant. The refrigerant circulation process is performed by the following refrigerant circulation process .

When the cooling switch (not shown) of the air conditioning system is turned on, the compressor 1 sucks and compresses the low-temperature and low-pressure gaseous refrigerant while being driven by the power of the engine or the motor, And the condenser 2 exchanges the gaseous refrigerant with the outside air to condense it into a high-temperature high-pressure liquid. The liquid refrigerant discharged from the condenser 2 in a high-temperature and high-pressure state rapidly expands due to the throttling action of the expansion valve 3 and is sent to the evaporator 4 in a low-temperature low-pressure humidified state, The blower (not shown) exchanges the refrigerant with the air blowing into the vehicle interior. The refrigerant evaporates in the evaporator 4 and is discharged to the low-temperature and low-pressure gas state. The refrigerant is again sucked into the compressor 1 to recycle the refrigeration cycle as described above.

The evaporator is installed inside the air conditioner case installed inside the vehicle compartment to function as a cooling device. That is, the air blown by the blower (not shown) flows through the evaporator 4, And is discharged to the inside of the vehicle in a cooled state.

The heating of the interior of the vehicle is performed by using a heater core (not shown) provided inside the air conditioning case and circulating engine cooling water, or an electric 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 and radiates heat while exchanging heat with air.

2. Description of the Related Art In recent years, an air conditioning system, that is, a heat pump system that performs cooling and heating using only a refrigeration cycle has been developed. As shown in FIG. 2, The evaporator 4 for cooling is installed in the cold air passage 11 and the condenser 2 for heating is installed in the hot air passage 12. The hot air passage 12 is divided into left and right compartments, to be.

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

The blower 20 and the hot air passage 12 are respectively provided with respective blowers 20 on the inlet side of the cold air passage 11 and the hot air passage 12, respectively.

In the above-described air conditioning system, the air conditioning case 10 and the blower 20 are installed inside the vehicle compartment based on a dash panel (not shown) for partitioning the vehicle compartment and the engine compartment.

Therefore, in the cooling mode, the cold air cooled while passing through the evaporator 4 of the cold air passage 11 is discharged to the vehicle compartment through the air outlet 15 to be cooled. At this time, 2, the hot air heated is discharged through the air outlet 16 to the outside of the car.

In the heating mode, hot air heated while passing through the condenser 2 of the hot air passage 12 is discharged to the inside of the vehicle through the air outlet 15 to be heated. At this time, the evaporator 4 of the cold air passage 11 And the cooled cold air is discharged through the air outlet 16 to the outside of the car.

However, in the conventional air conditioner system, since the air conditioner case 10 and the blower 20, in which the evaporator 4 and the condenser 2 are built, are installed inside the vehicle room based on the dash panel, noise and vibration Which is a problem in that it is difficult to secure the interior space of the car.

In order to solve the above problems, an object of the present invention is to provide an air conditioner module including an air conditioner case and a blower device in which a cold air passage and a warm air passage are formed, A distribution duct for distributing to the inside of the vehicle is disposed in the interior of the vehicle based on a dash panel, and a bottleneck portion in which the passage is narrowed by joining the cold air passage and the warm air passage to the air conditioning case is formed, And the outlet of the air conditioner case can be reduced due to the configuration of the bottleneck portion. Accordingly, it is possible to reduce the size of the outlet of the air conditioner case through the through-hole of the dash panel Since the sub-size can be reduced, the strength of the dash panel can be reinforced, and since only the distribution duct is disposed inside the car, And to provide a vehicle air conditioning system capable of minimizing the noise and vibration of the room and maximizing the space occupancy of the passenger compartment.

According to an aspect of the present invention, there is provided a vehicular air conditioning system including a compressor, a condenser, an expansion device, and an evaporator connected to each other through a refrigerant circulation line, wherein the cold air passage in which the evaporator is installed, And an air conditioning module connected to the outlet of the air conditioner case for discharging cold air or hot air from the air conditioner case to the air discharge mode And a distribution duct for distributing the refrigerant to a specific position in the interior of the vehicle, wherein the air conditioning case is formed with a bottleneck which narrows the passage while the cold air passage and the warm air passage join together.

The present invention is characterized in that an air conditioning module including an air conditioning case and an air blowing device formed by partitioning a cold air passage and a warm air passage is disposed on the engine room side with respect to a dash panel and a distribution duct for distributing cold air, In the system in which the dash panel is disposed on the inner side of the vehicle compartment, a bottleneck portion in which the passage is narrowed by joining the cold air passage and the warm air passage into the air conditioning case is formed, It is possible to reduce the size of the outlet of the air conditioner case due to the bottleneck structure, thereby reducing the size of the through-hole of the dash panel through which the outlet of the air conditioner case passes, It is possible to reinforce the strength of the panel.

In addition, since only the distribution duct is disposed inside the vehicle interior, noise and vibration in the vehicle interior can be reduced and the interior space of the vehicle interior can be maximized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a refrigeration cycle of a general automotive air conditioning system;
2 is a view showing a conventional automotive air conditioning system,
3 is a perspective view showing a vehicle air conditioning system according to the present invention,
FIG. 4 is a perspective view showing a state in which a distribution duct is separated in FIG. 3,
5 is a perspective view showing an air conditioning module in a vehicle air conditioning system according to the present invention,
Fig. 6 is a perspective view seen from the side of the inflow inlet duct in Fig. 5,
7 is a sectional view taken along line AA in Fig. 6,
8 is a sectional view showing a cooling mode in a vehicle air conditioning system according to the present invention,
9 is a sectional view showing a heating mode in the air conditioning system for a vehicle according to the present invention,
10 is a cross-sectional view showing a mix mode in a vehicular 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 figure, the air conditioning system for a vehicle according to the present invention includes a compressor (not shown), a condenser 102, an expansion means (not shown), and an evaporator 104 connected to a refrigerant circulation line , And performs the cooling through the evaporator (104) and performs the heating through the condenser (102).

First, the compressor receives the power from a power source (such as an engine or a motor), sucks and compresses the low-temperature low-pressure gaseous refrigerant discharged from the evaporator 104, and discharges it in a gaseous state at a high temperature and a high pressure.

The condenser 102 exchanges heat between the gaseous refrigerant of high temperature and high pressure discharged from the compressor and flowing in the condenser 102 and the air passing through the condenser 102. In this process, the refrigerant is condensed, The air is heated and transformed into a warm air.

The condenser 102 may have a structure in which a refrigerant purifying line (refrigerant pipe) is formed in a zigzag shape and then a radiating fin (not shown) is installed or a plurality of tubes (not shown) are connected between a pair of header tanks And a radiating fin is provided between the tubes.

Accordingly, the gaseous refrigerant of high temperature and pressure discharged from the compressor flows through the zigzag refrigerant circulation line or a plurality of tubes and is heat-exchanged with the air to be condensed. At this time, the air passing through the condenser 102 is heated .

The expansion means (not shown) rapidly expands the liquid-phase refrigerant discharged from the condenser 102 by the throttling action, and sends the refrigerant to the evaporator 104 in a low-temperature and low-pressure humidified state.

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

The evaporator 104 evaporates the low-pressure liquid refrigerant discharged from the expansion means by exchanging heat with the air in the air conditioning case 110, thereby cooling the air by an endothermic effect due to the latent heat of evaporation of the refrigerant.

Subsequently, the gaseous low-temperature and low-pressure gaseous refrigerant evaporated in the evaporator 104 is again sucked into the compressor and recycled as described above.

In the refrigerant circulation process as described above, air in the interior of the vehicle is circulated through the evaporator 104 while air blown from the blower 130 flows into the air conditioning case 110 and passes through the evaporator 104 Cooled by the latent heat of evaporation of the liquid refrigerant, cooled down and discharged into the passenger compartment through the distribution duct 200,

In the heating of the interior of the vehicle, air blown from the blower 130 flows into the air conditioning case 110 and is heated by the heat of the high-temperature, high-pressure gaseous refrigerant circulating in the condenser 102 while passing through the condenser 102 And then discharges the air through the distribution duct 200 to the inside of the vehicle.

In the vehicle air conditioning system according to the present invention, the air conditioning module 100 and the distribution duct 200 are coupled to each other.

The air conditioning module 100 includes an air conditioner case 110 having 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, And a blowing device 130 for blowing air to the cold air passage 111 and the hot air passage 112 of the air conditioner.

The distribution duct 200 is connected to the outlet 110b of the air conditioning case 110 and is configured to distribute the cold air or hot air discharged from the air conditioning case 110 to a specific position in the car according to the air discharge mode, And a door 230.

The air conditioning module 100 and the distribution duct 200 are separately formed on the basis of 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 inside the cabin with respect to the dash panel 300.

The air conditioning module 100 including the air conditioner case 110 and the air blower device 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, The distribution duct 200 having the mode door 230 for distributing the indoor air is disposed on the inner side of the dash panel 300 with respect to the dash panel 300 and coupled to each other so that the air conditioning module 100 causing noise is disposed on the engine room side It is possible to reduce the noise and vibration of the interior of the vehicle, and to maximize the interior space of the vehicle compared to the existing system by disposing only the distribution duct 200 on the interior of the vehicle.

The penetration part 310 is formed in the dash panel 300. The shape of the penetration part 310 may be various shapes as well as a square shape as shown in the drawing.

The air conditioning module 100 disposed on the engine room side and the distribution duct 200 disposed on the inner side of the vehicle compartment are coupled to each other through the penetration part 310. That is, The module 100 and the distribution duct 200 are connected to each other.

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

The air conditioner case 110 is divided into a cold air passage 111 and a warm air passage 112 by a partition wall 113 partitioning the interior of the air conditioner case 110 upward and downward.

That is, 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.

At this time, the cold air passage 111 and the hot air passage 112 are partitioned from the inlet 110a of the air conditioner case 110 by the partition wall 113, and the outlet 110b of the air conditioner case 110, As shown in Fig.

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

The air conditioner case 110 is formed with a bottleneck portion 116 in which the cold air passage 111 and the warm air passage 112 join together to narrow the passage.

The bottleneck portion 116 is formed on the outlet 110b side of the air conditioning case 110 connected to the distribution duct 200. [

The cross-sectional area of the bottleneck 116 is less than the sum of the cross-sectional area of the outlet 111b of the cold air passage 111 and the cross-sectional area of the outlet 112b of the hot air passage 112.

10, the cold air flowing in the cold air passage 111 and the hot air flowing in the hot air passage 112 join together at the bottleneck portion 116. At this time, 116, it is compressed and smoothly mixed to improve the mixing property, and sufficiently mixed air can be discharged uniformly.

The mixed air passing through the bottleneck portion 116 is mixed again in the course of flowing through the distribution duct 200.

The size of the outlet 110b of the air conditioning case 110 can be reduced due to the configuration of the bottleneck portion 116 so that the dash panel 300 (see FIG. 1), through which the outlet 110b of the air conditioning case 110 passes, The size of the penetration portion 310 of the dash panel 300 can be reduced, thereby reinforcing the strength of the dash panel 300.

The evaporator 104 is installed in the cold air passage 111 and the condenser 102 is installed in the hot air passage 112. The condenser 102 and the evaporator 104 are also arranged upward and downward due to the arrangement of the upper and lower portions 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 first and second blowers 130a and 130b, which will be described later.

On the other hand, cool air flows in the cold air passage 111 provided with the evaporator 104, and warm air flows in the hot air passage 112 provided with the condenser 102.

A bypass passage 114 is formed in the partition wall 113 between the evaporator 104 and the condenser 102 to communicate the cold air passage 111 with the hot air passage 112, The bypass 114 is provided with a bypass door 115 for opening and closing the bypass passage 114.

The bypass passage 114 bypasses a part of the cold air passing through the evaporator 104 in the cold air passage 111 to the warm air passage 112 side, The bypass passage 114 is closed, and in the heating mode, the bypass passage 114 is selectively opened and closed.

Therefore, when the bypass door 115 closes the bypass passage 114 and is in the cooling mode, cold air cooled by the evaporator 104 is supplied to the passenger compartment while flowing through the cold air passage 111, The air flowing in the hot air passage 112 is discharged to the outside. In the heating mode, the hot air heated by the condenser 102 is supplied to the inside of the vehicle while flowing through the hot air passage 112, At this time, air flowing through the cold air passage 111 is discharged to the outside.

In the heating mode, when the passenger compartment dehumidification is required, the bypass door 115 opens the bypass passage 114. In this case, the bypass door 115 is opened by the evaporator 104 while flowing through the cold air passage 111 A part of the cooled and dehumidified cool air is bypassed to the hot air passage 112 side through the bypass passage 114 and then supplied to the passenger compartment to perform dehumidification heating.

The condenser 102 is installed on the downstream side of the bypass passage 114 in the air flow direction within the hot air passage 112. Therefore, the cold air heated while passing through the evaporator 104 can 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.

A cool air discharge port 119a for discharging the cold air having passed through the evaporator 104 to the outside is provided at one side of the air cooler passage 111 of the air conditioning case 110. The cool air discharge port 119a and the cool air passage 111 And a cold air mode door 120 for opening /

A warm air discharge port 119b for discharging warm air having passed through the condenser 102 to the outside and a warm air discharge port 119b for discharging the warm air discharge port 119b and the warm air passage 112 are provided at one side of the warm air passage 112 of the air- And a warm air mode door 121 for opening and closing.

The cold air discharge port 119a and the cold air mode door 120 are provided on the downstream side of the evaporator 104 in the cold air passage 111. The hot air outlet 119b and the hot air mode door 121 communicate with each other, And is provided on the downstream side of the condenser 102 in the passage 112.

The air discharged through the cool air discharge port 119a and the warm air discharge port 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 hot air mode door 121 opens the hot air outlet 119b, The air flowing through the hot air passage 112 passes through the condenser 102 and is heated while being cooled by passing through the evaporator 104 and then discharged to the inside of the vehicle through the distribution duct 200 to be cooled. And then discharged to the outside through the post-heating air outlet 119b.

In the heating mode, the hot air mode door 121 opens the hot air passage 112, the cold air mode door 120 opens the cold air discharge port 119a, and the air flowing through the hot air passage 112 The air flowing through the cold air passage 111 is cooled while being passed through the evaporator 104 and then cooled and cooled by the cooling air passing through the evaporator 104. The refrigerant passes through the condenser 102 and is discharged to the inside of the vehicle through the distribution duct 200, And is discharged to the outside through the discharge port 119a.

An air blowing device 130 is installed on the inlet 110a side of the air conditioning case 110 to blow air to the cold air passage 111 and the hot air passage 112.

The air blowing device 130 includes a first blower 130a connected to a discharge port 134 at the inlet 111a side of the air cooling path 111 of the air conditioning case 110 to blow air toward the air cooling path 111, And a second blower 130b connected to a discharge port 138 on the side of the inlet 112a of the warm air passage 112 of the air conditioning case 110 to blow air to the warm air passage 112 side.

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

The first blower 130a includes a scroll case 131 having the discharge port 134 connected to the inlet 111a of the air cooling passage 111 of the air conditioning case 110, An inlet ring 131a formed on one side surface of the scroll case 131 and through which the inside air and the outside air are introduced and an inlet port 131b provided on the other side surface of the scroll case 131 And a motor 133 installed to rotate 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 discharge opening 138 to be connected to the inlet 112a of the air warming passage 112 of the air conditioning case 110, An inlet ring 135a formed at one side surface of the scroll case 135 to allow the inside and outside air to flow therein and an air inlet 135a formed at the other side of the scroll case 135 And a motor 137 installed to rotate 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 such that the rotational axes of the motors 133 and 137 are in the same direction.

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.

The scroll cases 131 and 135 of the first and second blowers 130a and 130b are formed in a scroll shape around the blowing fans 132 and 136 installed in the first and second blowers 130a and 130b. Therefore, the cross-sectional area of the air passage around the blowing fans (132, 136) in the scroll cases (131, 135) gradually increases from the scroll starting point to the ending point.

The discharge ports 134 and 138 of the first and second blowers 130a and 130b extend from the scroll-shaped end points of the scroll cases 131 and 135 and are connected to the cold and warm air passages 111 and 112, respectively.

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 direction of the scroll case 131 is opposite to that of the scroll case 131 of the first blower 130a, The scroll case 135 of the second blower 130b is connected to the hot air passage 112 located at the upper portion of the partition wall 113. The hot air passage 112 is connected to the cold air passage 111 located below the partition wall 113, Lt; / RTI >

The first and second blowers 130a and 130b are disposed between the first and second blowers 130a and 130b so as to supply the inside and outside air to the first and second blowers 130a and 130b, And an intake duct 140 connected to the intake duct 140 to communicate with each other.

That is, one end of the intake duct 140 is provided between the first blower 130a and the second blower 130b, and the first and second blowers 130a and 130b are connected to the one intake duct 140) are commonly used.

By providing the intake duct 140 between the first blower 130a and the second blower 130b in the system using the two blowers 130a and 130b that operate individually, It is possible to maximize the space efficiency, 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 inside air, an inside air inlet 142, an outside air inlet 141 and the first blower 130a, A first indoor / outdoor switching door 147 installed to open / close a passage communicating with the first blower 130a and selectively introducing the inside and outside air into the first blower 130a, And a second inside / outside switching door (148) installed to open / close a passage for communicating the second blower (130b) and selectively introducing the inside and outside air to the second blower (130b) side.

That is, the first internal / external switching door 147 is provided on the upstream side of the inlet ring 131a of the first blower 130a between the outside air inlet 141 and the inside air inlet 142, And selectively opens and closes a passage for communicating the ring 131a with the outside air inlet 141 and a passage for communicating the inlet ring 131a and the inside air inlet 142. [

The second inside / outside switching door 148 is provided on the upstream side of the inlet ring 135a of the second blower 130b between the outside air inlet 141 and the inside air inlet 142, 135a and the outside air inlet 141 and a passage for communicating the inlet ring 135a and the inside air inlet 142. [

It is preferable that the outside air inlet 141 is formed in the upper portion of the intake duct 140 and the inside air inlet 142 is formed in the lower portion of the intake duct 140. However,

The first internal / external switching door 147 and the second internal / external switching door 148 are also composed of a dome-shaped door.

As described above, one intake duct 140 is installed between the first and second blowers 130a and 130b, and the first and second indoor / outdoor switching doors 147 and 148 are installed in the intake duct 140 The first and second blowers 130a and 130b can selectively supply the inside and outside air flowing into the inside and outside air inlet openings 141 and 142 of the intake duct 140. [

An air filter (not shown) is installed in the outside air inlet 141 and the inside air inlet 142 to remove impurities contained in the air flowing into the outside air inlet 141 and the inside air inlet 142 .

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 inside of the car.

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

That is, the air inflow duct 143 is installed on the outer surface of the air conditioning case 110 to communicate with the air inflow inlet 142 of the intake duct 140. In this case, the air inflow duct 143 Is communicated with the passenger compartment through the dash panel 300.

At this time, the inlet 143a of the inflow inlet duct 143 and the outlet 110b of the air conditioning case 110 are disposed side by side so as to penetrate the penetration portion 310. [

The inlet 143a of the air inflow duct 143 and the outlet 110b of the air conditioning case 110 are arranged in parallel to each other so as to penetrate the penetration portion 310, Only one through-hole 310 may be formed in the recess 300.

The distribution duct 200 includes an air inlet 210 connected to the outlet 110b of the air conditioner case 110 and an air inlet 210 for distributing the air introduced into the air inlet 210 to a specific position A plurality of air outlets 220 and a mode door 230 for controlling the opening of the plurality of air outlets 220.

The plurality of air discharge openings 220 may include a defrost vent 221 and a face vent 222 separated from each other at an upper portion of the distribution duct 200, And a floor vent 223 formed adjacent to the floor vent 223.

At this time, the floor vent 223 discharges warmer air than the face vent 222, and the face vent 222 discharges the cooler air than the floor vent 223 for the comfort of the passenger in the car. In the present invention, warm air flows in the upper part of the partition wall 113 in the air conditioning case 110 and cool air flows in the lower part of the partition wall 113. Therefore, the dash panel 300 and the floor vent 223 adjacent to the floor vent.

That is, in the existing system, the floor vent is formed on the far side of the dash panel 300 rather than on the side adjacent to the dash panel 300. However, in the distribution duct 200 of the present invention, The hot air flowing along the hot air passage 112 in the upper portion of the air conditioner case 110 and the cold air flowing along the cold air passage 111 in the lower portion of the air conditioner case 110 Warmer air is discharged from the floor vent 223 near the hot air flow in the air flow and cold air is discharged from the face vent 222 near the cold air, And the indoor comfort can be improved.

Meanwhile, the defrost vent 221 discharges air toward the front windshield of the vehicle, and the face vent 222 discharges air toward the face of a passenger in front of the passenger compartment, and the floor vent 223 is a passenger Thereby discharging air toward the foot of the user.

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

Meanwhile, an electric heater 240 may be installed in the distribution duct 200.

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

First, the gaseous refrigerant of high temperature and high pressure compressed and discharged from the compressor flows into the condenser 102.

The gaseous refrigerant flowing into the condenser 102 undergoes heat exchange with the 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 flows into the expansion means and is expanded under reduced pressure.

The refrigerant decompressed and expanded by the expansion means is transferred to the evaporator 104 at a low temperature and pressure in an atomized state and the refrigerant flowing into the evaporator 104 is evaporated by heat exchange with the air passing through the evaporator 104 .

Then, the low-temperature low-pressure refrigerant discharged from the evaporator 104 flows into the compressor, and then recirculates the refrigeration cycle as described above.

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

end. 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 hot air mode door 121 operates to open the hot air outlet 119b do.

The first and second indoor / outdoor switching doors 147 and 148 operate selectively to supply indoor air or outdoor air to the first and second blowers 130a and 130b according to the indoor air inflow mode or the outdoor air inflow mode.

Accordingly, when the first and second blowers 130a and 130b are operated, the indoor air or the outside air flowing into the intake duct 140 is sucked into the first and second blowers 130a and 130b, 111 and the warm air passage 112, respectively.

The air supplied to the cold air passage 111 is cooled while passing through the evaporator 104 and then flows to the distribution duct 200. Thereafter the air discharged from the air outlet 220 is opened by the mode door 230 according to the air discharge mode, So that the air is cooled.

At this time, the air supplied to the hot air passage 112 is heated while passing through the condenser 102, and then discharged to the outside through the hot air outlet 119b.

B. Heating mode

In the heating mode, the hot 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 as shown in FIG. 9 .

The first and second indoor / outdoor switching doors 147 and 148 operate selectively to supply indoor air or outdoor air to the first and second blowers 130a and 130b according to the indoor air inflow mode or the outdoor air inflow mode.

Accordingly, when the first and second blowers 130a and 130b are operated, the indoor air or the outside air flowing into the intake duct 140 is sucked into the first and second blowers 130a and 130b, 111 and the warm 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, And is heated to the inside of the vehicle.

At this time, the air supplied to the cold air passage 111 is cooled while being passed through the evaporator 104, and then discharged to the outside through the cold air outlet 119a.

All. Mix mode

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

The first and second indoor / outdoor switching doors 147 and 148 operate selectively to supply indoor air or outdoor air to the first and second blowers 130a and 130b according to the indoor air inflow mode or the outdoor air inflow mode.

Accordingly, when the first and second blowers 130a and 130b are operated, the indoor air or the outside air flowing into the intake duct 140 is sucked into the first and second blowers 130a and 130b, 111 and the warm air passage 112, respectively.

The air supplied to the cold air passage 111 is cooled while passing through the evaporator 104 and then flows to the bottleneck portion 116. The air supplied to the hot air passage 112 passes through the condenser 102, And then flows to the bottleneck portion 116.

The cold air and the hot air that have flowed into the bottleneck portion 116 are mixed with each other while flowing into the distribution duct 200.

Then, the cold air and the warm air which have flowed into the distribution duct 200 are mixed again and then discharged to the passenger compartment 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: Warm air passage 113: Compartment wall
114: Bypass passage 115: Bypass door
116: bottleneck
119a: Cold air outlet 119b: Hot air outlet
120: cold air mode door 121: warm air mode door
130: blower 130a: first blower
130b: second blower 131, 135: scroll case
132, 136: blowing fan 133, 137: motor
134, 138:
140: intake duct 141: outside air inlet
142: Air inlet port 143: Air inlet duct
147: first inner / outer switching door 148: second inner / outer switching door
200: distribution duct 210: air inlet
220: air outlet 221: diffused vent
222: Pace Vents 223: Floor Vents
230: Mode Door 300: Dash Panel
310:

Claims (10)

In a vehicle air conditioning system in which a compressor, a condenser (102), an expansion means, and an evaporator (104) are connected by a refrigerant circulation line,
A cooling air passage 111 in which the evaporator 104 is installed and a warm air passage 112 in which the condenser 102 is installed; An air conditioning module 100 composed of an air blowing device 130 for blowing air to the warm air passage 112,
And a distribution duct 200 connected to the outlet 110b of the air conditioning case 110 and distributing the cold air or hot air discharged from the air conditioning case 110 to a specific position in the car according to the air discharge mode,
Wherein the air conditioning case (110) is formed with a bottleneck portion (116) in which the cold air passage (111) and the warm air passage (112) join together to narrow the passage. The method according to claim 1,
Wherein the bottleneck portion (116) is formed on an outlet (110b) side of the air conditioning case (110) connected to the distribution duct (200). 3. The method of claim 2,
Sectional area of the bottleneck portion 116 is smaller than a sum of a sectional area of the outlet 111b of the cold air passage 111 and a sectional area of the outlet 112b of the hot air passage 112. [ The method according to claim 1,
Wherein the air conditioning module (100) is disposed on the engine room side with respect to the dash panel (300) for partitioning the car room and the engine room, and the distribution duct (200) is disposed inside the car room. 5. The method of claim 4,
The dash panel 300 is provided with a penetrating portion 310,
Wherein the air conditioning module (100) and the distribution duct (200) are coupled to each other through the penetration part (310). The method according to claim 1,
A partition wall 113 for partitioning the cold air passage 111 and the warm air passage 112 is formed in the air conditioning case 110,
Wherein 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 according to claim 1,
A cool air discharge port 119a for discharging the cold air having passed through the evaporator 104 to the outside and a cool air discharge port 119a for discharging the cool air discharge port 119a and the cool air passage 111 are provided at one side of the cold air passage 111 of the air- A cold air mode door 120 for opening and closing is provided,
A warm air discharge port 119b for discharging warm air having passed through the condenser 102 to the outside and a warm air discharge port 119b for discharging the warm air discharge port 119b and the warm air passage 112 are provided at one side of the warm air passage 112 of the air- And a warm air mode door (121) for opening and closing the air conditioner door (121). The method according to claim 1,
The distribution duct (200)
An air inlet 210 connected to the outlet 110b of the air conditioner case 110,
A plurality of air outlets 220 for distributing the air introduced into the air inlets 210 to specific positions in a vehicle interior,
And a mode door (230) for controlling the opening of the plurality of air discharge openings (220). 10. The method of claim 9,
The plurality of air discharge openings 220 may include a defrost vent 221 and a face vent 222 separated from each other at an upper portion of the distribution duct 200, And a floor vent (223) formed adjacent to the floor vent (223). The method according to claim 1,
The air blowing device (130)
A first blower 130a connected to the inlet 111a of the air cooling passage 111 of the air conditioning case 110 to blow air toward the air passage 111,
A second blower 130b which is connected to the inlet 112a side of the warm air passage 112 of the air conditioning case 110 and blows air to the warm air passage 112 side,
And an intake duct (140) installed between the first blower (130a) and the second blower (130b) and supplying the inside and outside air to the first and second blowers (130a, 130b) Air conditioning system.

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