KR102552117B1 - Air conditioning system for vehicle - Google Patents

Abstract

The present invention relates to an air conditioning system for vehicles, and more particularly, includes a cool air outlet for discharging cold air (waste heat) that has passed through an evaporator to the outside and a warm air outlet for discharging warm air (waste heat) that has passed through a condenser to the outside. In a system in which the air conditioning case is disposed on the engine room side with respect to the dash panel, and the distribution duct for distributing the cold and warm air discharged from the air conditioning case into the vehicle interior is disposed inside the vehicle with respect to the dash panel, the condenser is placed in the air conditioning case. is disposed on the upper side and the evaporator is disposed on the lower side so that hot waste heat is discharged to the upper side and cold waste heat is discharged to the lower side. The present invention relates to an air conditioning system for a vehicle capable of improving cooling and heating performance by preventing wind resistance from occurring, enabling smooth discharge of waste heat through the cold air outlet and the warm air outlet.

Description

Air conditioning system for vehicle {Air conditioning system for vehicle}

The present invention relates to an air conditioning system for vehicles, and more particularly, includes a cool air outlet for discharging cold air (waste heat) that has passed through an evaporator to the outside and a warm air outlet for discharging warm air (waste heat) that has passed through a condenser to the outside. In a system in which the air conditioning case is disposed on the engine room side based on the dash panel, and the distribution duct for distributing the cold and warm air discharged from the air conditioning case into the vehicle interior is disposed on the vehicle interior side based on the dash panel, the cold air outlet and the warm air discharge The present invention relates to an air conditioning system for vehicles capable of improving cooling and heating performance by providing a release means to smoothly discharge air discharged from a hole, thereby enabling smooth discharge of waste heat through the cold air outlet and the warm air outlet.

As shown in FIG. 1, a general air conditioning system for a vehicle usually includes a compressor (1) for compressing and sending out refrigerant, a condenser (2) for condensing the high-pressure refrigerant sent from the compressor (1), For example, an expansion valve (3) that throttles the liquefied refrigerant condensed 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 consisting of an evaporator (4) that cools the air discharged into the room by absorbing heat by the latent heat of evaporation of the refrigerant by evaporating it, and is connected to a refrigerant pipe, and through the following refrigerant circulation process, cool down

When the cooling switch (not shown) of the air conditioning system is turned on, first, the compressor 1 is driven by engine or motor power while sucking and compressing the low-temperature, low-pressure gaseous refrigerant to form a high-temperature, high-pressure gaseous refrigerant 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. Subsequently, the liquid refrigerant sent 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 sent to the evaporator 4 in a low-temperature and low-pressure wet state, and the evaporator 4 The refrigerant exchanges heat with air blown into the vehicle interior by a blower (not shown). Accordingly, the refrigerant is evaporated in the evaporator 4 and discharged in a low-temperature, low-pressure gaseous state, and is sucked back into the compressor 1 to recycle the refrigerant cycle as described above.

The evaporator is installed inside the air conditioning case installed inside the vehicle to serve as a cooling function, that is, the air blown by a blower (not shown) passes through the evaporator 4 and circulates in the evaporator 4 Liquid refrigerant It is made by being cooled by the latent heat of evaporation and discharged into the vehicle interior in a cold state.

In addition, the heating of the vehicle interior is performed by using a heater core (not shown) installed inside the air conditioning case through which engine cooling water circulates or by using 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 to dissipate 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. A structure in which the warm air passage 12 is divided into left and right sections, an evaporator 4 for cooling is installed in the cool air passage 11, and a condenser 2 for heating is installed in the warm air passage 12. am.

At this time, a plurality of air outlets 15 for supplying air into 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 .

In addition, blowers 20 that operate individually are installed at the inlets of the cold air passage 11 and the warm air passage 12, respectively.

In the air conditioning system described above, the air conditioning case 10 and the blower 20 are installed on the engine room side with respect to a dash panel (not shown) dividing 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 discharge port 15 to cool, and at this time, the condenser of the warm air passage 12 ( The warm air heated while passing through 2) is discharged to the outside of the vehicle through the air outlet 16.

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

However, in the conventional air conditioning system, in the cooling mode, hot air (waste heat) passing through the condenser 2 must be discharged to the outside through the air discharge port 16, and in the heating mode, the evaporator 4 The passing cold air (waste heat) should be discharged to the outside through the air outlet 16, but resistance is generated by the dynamic pressure caused by the driving wind during vehicle driving and the external air flows backward through the air outlet 16. There was a problem of deterioration of cooling and heating performance due to the lack of discharge.

An object of the present invention for solving the above problems is an air conditioning case having a cold air outlet for discharging cold air (waste heat) that has passed through an evaporator to the outside and a warm air outlet for discharging warm air (waste heat) that has passed through a condenser to the outside. In a system in which the distribution duct, which is arranged on the engine room side based on the dash panel and distributes the cold and warm air discharged from the air conditioning case into the vehicle interior, is arranged on the inside side of the vehicle based on the dash panel, the condenser is located on the upper side of the air conditioning case. and the evaporator is disposed on the lower side so that hot waste heat is discharged upward and cold waste heat is discharged downward. It is an object of the present invention to provide an air conditioning system for vehicles capable of improving cooling and heating performance by enabling smooth discharge of waste heat through the cold air outlet and the warm air outlet.

In order to achieve the above object, the present invention provides an air conditioning system for a vehicle, wherein an air conditioning case having a cold air passage and a warm air passage is provided, and the air conditioning case includes a cold air outlet for discharging cold air from the cold air passage to the outside; A warm air outlet is formed to discharge warm air from the warm air passage to the outside, and a discharge means is provided to smoothly discharge the air discharged through the cool air outlet and the warm air outlet.

In the present invention, an air conditioning case having a cold air outlet for discharging cold air (waste heat) that has passed through an evaporator to the outside and a warm air outlet for discharging warm air (waste heat) that has passed through a condenser to the outside is formed on the engine room side with respect to the dash panel. In a system in which the distribution duct for distributing the cold and warm air discharged from the air conditioning case into the vehicle interior is disposed inside the vehicle with respect to the dash panel, the condenser is disposed on the upper side and the evaporator is disposed on the lower side in the air conditioning case. The hot waste heat is discharged upward and the cold waste heat is discharged downward, and the cold air outlet and the warm air outlet are formed in the opposite direction to the driving direction of the vehicle so that no resistance of the driving wind is generated against the discharged air, thereby discharging the cold air. Cooling and heating performance can be improved by smoothly discharging waste heat through the vent and hot air outlet.

1 is a configuration diagram showing a refrigeration cycle of a general vehicle air conditioning 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;
Figure 4 is a perspective view showing a state in which the distribution duct is separated from Figure 3;
5 is a perspective view showing an air conditioning module in the vehicle air conditioning system according to the present invention;
Figure 6 is a perspective view viewed from the side of the inlet duct of Figure 5;
7 is a cross-sectional view 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 showing a mix 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, the vehicle air conditioning system according to the present invention connects a compressor (not shown) -> condenser 102 -> expansion means (not shown) -> evaporator 104 through 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 supply source (engine or motor, etc.), sucks in and compresses the low-temperature, low-pressure gaseous refrigerant discharged from the evaporator 104, and discharges it in a high-temperature, high-pressure gaseous state.

The condenser 102 exchanges heat between the high-temperature and high-pressure gaseous refrigerant discharged from the compressor and flowing inside the condenser 102 and the air passing through the condenser 102. 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 refrigerant purifying line (refrigerant pipe) is configured in a zigzag shape and then a heat radiation fin (not shown) is installed, or a plurality of tubes (not shown) are connected and installed between a pair of header tanks It can be configured with a structure in which a heat radiation fin is installed between each tube.

Therefore, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor is condensed by exchanging heat with air while flowing along the zigzag refrigerant circulation line or the plurality of tubes, and at this time, the air passing through the condenser 102 is heated and turned into warm air. It will be.

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

An expansion valve or an orifice structure may be used as the expansion means.

The evaporator 104 heat-exchanges the low-pressure liquid refrigerant flowing from the expansion means with the air in the air conditioning case 110 to evaporate it, thereby cooling the air by absorbing heat by the latent heat of evaporation of the refrigerant.

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

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

The heating of the interior of the vehicle is performed by the heat dissipation of the 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 being discharged into the vehicle interior through the distribution duct 200 after being heated.

In addition, the air conditioning system for vehicles 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 warm air passage 112 in which the condenser 102 is installed are defined, and the air conditioning case 110 It is composed of a blowing device 130 for blowing air to the cold air passage 111 and the warm air passage 112 of ).

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 that divides 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 vehicle compartment with respect to the dash panel 300.

As such, the air conditioning module 100 composed of the air conditioning case 110 in which the evaporator 104 and the condenser 102 are installed and the blower 130 is disposed on the engine room side with respect to the dash panel 300, and blows air. The distribution duct 200 having the mode door 230 so as to be distributed indoors is disposed inside the vehicle interior 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 noise and vibration in the vehicle cabin, and to maximize space in the vehicle cabin compared to existing systems by arranging only the distribution duct 200 inside the vehicle cabin.

Further, the dash panel 300 is formed with a penetrating portion 310, and the penetrating portion 310 may be formed singly or more than one as shown in the drawing.

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 drawing.

In addition, the air conditioning module 100 disposed in the engine room and the distribution duct 200 disposed in the vehicle interior are coupled to each other through the penetration part 310, that is, at the position of the penetration part 310, the air conditioning The module 100 and the distribution duct 200 are coupled and connected to each other.

In other words, the outlet 110b of the air conditioning case 110 of the air conditioning module 100 passing through the through portion 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.

Further, in the air conditioning case 110, a cold air passage 111 and a warm air passage 112 are defined by a partition wall 113 that divides the inside of the air conditioning case 110 up and down.

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, in the outlet 110b of the air conditioning case 110, the partition wall 114 is omitted 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 arranged vertically due to the upper and lower arrangement structure of the warm 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 toward which the rotating shafts of the motors 133 and 137 of the first and second blowers 130a and 130b to be described later are directed.

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

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

The bypass passage 114 bypasses a portion 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 provided in the cooling mode. The bypass passage 114 is closed, and in the heating mode, the bypass passage 114 is selectively opened and closed.

Therefore, in the cooling mode with the bypass door 115 closing the bypass passage 114, the cold air cooled by the evaporator 104 while flowing through the cooling air passage 111 is supplied to the interior of the vehicle to cool the vehicle. At this time, the air flowing through the warm air passage 112 is discharged to the outside, and in the heating mode, the warm air heated by the condenser 102 is supplied to the interior of the vehicle while flowing through the warm air passage 112 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. A portion of the cooled and dehumidified cold air is bypassed toward the warm air passage 112 through the bypass passage 114 and then supplied to the interior of the vehicle to perform dehumidifying heating.

Also, the condenser 102 is installed downstream of the bypass passage 114 in the air flow direction within the warm air passage 112 . Therefore, the cold air heated while passing through the evaporator 104 can be supplied to the condenser 102 through the bypass passage 114 .

Meanwhile, the evaporator 104 is installed upstream of the bypass passage 114 in the air flow direction within the cold air passage 111 .

In addition, on one side of the cooling air passage 111 of the air conditioning case 110, there is a cooling air outlet 119a for discharging cold air (waste heat) that has passed through the evaporator 104 in the heating mode to the outside, and the cold air outlet 119a. ) and a cold air mode door 120 for opening and closing the cold air passage 111,

On one side of the warm air passage 112 of the air conditioning case 110, there is a warm air outlet 119b for discharging the warm air (waste heat) that has passed through the condenser 102 to the outside in the cooling mode, and the warm air outlet 119b. A warm air mode door 121 opening and closing the warm air passage 112 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 provided on the downstream side of the evaporator 104. 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 via the engine room.

Therefore, 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, so that the cold air flows through the passage 111. After cooling while passing through the evaporator 104, it is discharged into the vehicle interior through the distribution duct 200 to be cooled. At this time, the air flowing through the warm air passage 112 passes through the condenser 102 and is heated Then, the hot air is discharged to the outside through the hot air outlet 119b.

In the heating mode, the warm air mode door 121 opens the warm air passage 112, and the cool air mode door 120 opens the cool air outlet 119a, so air flowing through the warm air passage 112 After being heated while passing through the condenser 102, it is discharged into the vehicle interior through the distribution duct 200 to heat, and at this time, the air flowing through the cold air passage 111 is cooled while passing through the evaporator 104, and then cool air It is discharged to the outside through the discharge port 119a.

In addition, a discharge unit 125 is provided to smoothly discharge the air discharged through the cold air outlet 119a and the warm air outlet 119b.

In the discharge unit 125, the condenser 102 and the hot air outlet 119b are disposed on the upper side of the air conditioning case 110, and the evaporator 104 and the cold air outlet 119a are disposed on the lower side. made by placing

At this time, the condenser 102 and the hot air passage 112 are disposed above the partition wall 113, and the evaporator 104 and the cold air passage 111 are disposed below the partition wall 113.

That is, in the cooling mode, the hot waste heat (warm air) exchanged with the condenser 102 is discharged upward, and in the heating mode, the cold waste heat (cold air) exchanged with the evaporator 104 is discharged downward, in other words, the temperature of the waste heat The cool air outlet 119a and the warm air outlet 119b are arranged so that the hot waste heat is discharged upward and the cold waste heat is discharged downward, and waste heat is discharged smoothly through the cool air outlet 119a and the warm air outlet 119b This makes it possible to improve cooling and heating performance.

In addition, the discharge means 125 includes the cool air outlet 119a and the warm air outlet 119a and the warm air outlet so that resistance of traveling wind does not occur with respect to the air discharged through the cool air outlet 119a and the warm air outlet 119b. (119b) is further included in the configuration formed in the direction opposite to the driving direction of the vehicle.

That is, when the vehicle is driven, resistance is generated due to the dynamic pressure of the driving wind, which obstructs the flow of air discharged through the cold air outlet 119a and the warm air outlet 119b. By forming the warm air outlet 119b in the opposite direction to the driving direction of the vehicle, the air discharged through the cold air outlet 119a and the warm air outlet 119b does not generate resistance of the driving wind and the air is smoothly discharged. It can improve cooling and heating.

Meanwhile, the cold air outlet 119a and the warm air outlet 119b are configured to open in a direction opposite to the driving direction of the vehicle.

And, in the air conditioning case 110, outside the cold air outlet 119a and the warm air outlet 119b, a cover plate 126 is provided to prevent foreign matter from entering into the cold air outlet 119a and the warm air outlet 119b. is provided

At this time, the cover plate 126 is spaced apart from the cold air outlet 119a and the warm air outlet 119b by a predetermined interval.

In addition, an auxiliary cool air outlet 127a is formed on the cover plate 126 on the side of the cool air outlet 119a to discharge the cold air that has passed through the cool air outlet 119a to the outside, and the warm air outlet 119b An auxiliary hot air outlet 127b is formed on the side cover plate 126 to discharge the warm air that has passed through the warm air outlet 119b to the outside.

At this time, the discharge means 125 further has a configuration in which the auxiliary cold air outlet 127a and the auxiliary warm air outlet 127b are formed in the opposite direction to the vehicle driving direction so that resistance of the driving wind does not occur against the discharged air. include

In addition, the cover plate 126 on the side of the warm air outlet 119b preferably has an inclined surface or a curved surface so that water introduced from the outside flows down by its own weight.

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

The blower 130 includes a first blower 130a having a discharge port 134 connected to the inlet 111a side of the cold air passage 111 of the air conditioning case 110 to blow air toward the cool air passage 111 and The second blower 130b has a discharge port 138 connected to the inlet 112a side of the warm air passage 112 of the air conditioning case 110 to blow air toward the warm air passage 112.

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

The first blower 130a includes a scroll case 131 having the outlet 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 blowing fan 132 rotatably installed inside, an inlet ring 131a formed on one side of the scroll case 131 through which internal and external air flows, and an inlet ring 131a on the other side of the scroll case 131. It is composed of a motor 133 installed to rotate the blowing fan 132.

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

The second blower 130b includes a scroll case 135 having the outlet 138 so as to be connected to the inlet 112a side of the warm air passage 112 of the air conditioning case 110, and the scroll case 135 A blowing fan 136 rotatably installed inside, an inlet ring 135a formed on one side of the scroll case 135 through which internal and external air flows, and an inlet ring 135a on the other side of the scroll case 135. It is composed of a motor 137 installed to rotate the blowing fan 136.

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

The first blower 130a and the second blower 130b are installed such that the respective motors 133 and 137 rotate 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.

Meanwhile, 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 therein, respectively. Accordingly, the cross-sectional area of the air passage around the blowing fans 132 and 136 in 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 extend from the scroll-shaped end points of the scroll cases 131 and 135 and are 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 direction is opposite to that of 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 is connected to the warm air passage 112 located above the partition wall 113. connected with

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

That is, one intake duct 140 is installed 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.

In this way, by installing the intake duct 140 between the first blower 130a and the second blower 130b, one intake duct in a system using two individually operated blowers 130a and 130b (140), space efficiency can be maximized, thereby reducing the size and cost of the system.

The intake duct 140 is disposed on the inlet side of the outside air inlet 141 for introducing outside air, the inside air inlet 142 for introducing outside air, and the first blower 130a to the first blower 130a. The first indoor/outdoor air conversion door 147 that opens and closes the inside inlet 142 and the outside air inlet 141, and is disposed on the inlet side of the second blower 130b to open and close the outside air inlet 142 and the outside air inlet ( 142) and a second indoor/outdoor air conversion door 148 that opens and closes the outdoor air inlet 141.

On the other hand, it is preferable that the outside air inlet 141 is formed on the upper part of the intake duct 140, and the inner air inlet 142 is formed on the lower part of the intake duct 140, but its position can be changed.

The first indoor/outdoor air conversion door 147 and the second indoor/outdoor air conversion door 148 are formed as dome-shaped doors.

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

Meanwhile, air filters (not shown) are installed in the outside air inlet 141 and the inside air inlet 142, respectively, to remove impurities contained in the air flowing into the outside air inlet 141 and the inside air inlet 142. .

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

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

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

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

The inlet 143a of the air inlet duct 143 and the outlet 110b of the air conditioning case 110 are arranged side by side and installed so as to pass through the through portion 310, so that the air conditioning system is installed on the dash panel. It is only necessary to form one through portion 310 in (300).

In addition, the distribution duct 200 has an air inlet 210 connected to the outlet 110b of the air conditioning case 110 and distributes the air introduced through 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 adjusting the opening 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 part 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.

Meanwhile, the defrost vent 221 discharges air toward the windshield in the vehicle interior, the face vent 222 discharges air toward the face of the front seat occupant in the vehicle interior, and the floor vent 223 discharges air toward the occupant in the vehicle interior. Air is expelled through the foot 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, and adjusts the opening of each vent according to the air discharge mode.

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

Hereinafter, the 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 changed into a liquid phase.

The liquid refrigerant discharged from the condenser 102 is introduced into the expansion means to be decompressed and expanded.

The refrigerant that has been decompressed and expanded in the expansion means is in a low-temperature, low-pressure atomization state and flows into the evaporator 104, and the refrigerant that flows into the evaporator 104 evaporates by exchanging heat with air passing through the evaporator 104. .

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

Hereinafter, an air flow process in a cooling mode, a heating mode, and a 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.

In addition, the first and second internal/external air conversion doors 147 and 148 are operated according to the indoor air inflow mode or the outdoor air inflow mode to selectively supply indoor air or outdoor air to the first and second blowers 130a and 130b.

Therefore, when the first and second blowers 130a and 130b operate, the inside 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 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 into the distribution duct 200, and then the air discharge port 220 opened by the mode door 230 according to the air discharge mode. It is discharged into the interior of the vehicle through the cooling system.

At this time, the air supplied to the warm air passage 112 is heated while passing through the condenser 102, and is then discharged out of the cabin after passing through the warm air outlet 119b.

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 cool air outlet 119a. .

In addition, the first and second internal/external air conversion doors 147 and 148 are operated according to the indoor air inflow mode or the outdoor air inflow mode to selectively supply indoor air or outdoor air to the first and second blowers 130a and 130b.

Therefore, when the first and second blowers 130a and 130b operate, the inside 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 warm air passage 112, respectively.

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

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

all. mixmode

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 .

In addition, the first and second internal/external air conversion doors 147 and 148 are operated according to the indoor air inflow mode or the outdoor air inflow mode to selectively supply indoor air or outdoor air to the first and second blowers 130a and 130b.

Therefore, when the first and second blowers 130a and 130b operate, the inside 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 warm air passage 112, respectively.

The air supplied to the cold air passage 111 is cooled while passing through the evaporator 104 and flows to the distribution duct 200, and the air supplied to the warm 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 through 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: warm 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: discharge means 126: cover plate
127a: auxiliary cold air outlet 127b: auxiliary warm air outlet
130: blower 130a: first blower
130b: second blower 131,135: scroll case
132,136: blowing fan 133,137: motor
134,138: discharge port
140: intake duct 141: outside air inlet
142: bet inlet 143: bet inlet duct
147: first indoor/outdoor conversion door 148: second indoor/outdoor conversion door
200: distribution duct 210: air inlet
220: air outlet 221: defrost vent
222 face vent 223 floor vent
230: mod door 300: dash panel
310: through part

Claims (12)

In the vehicle air conditioning system,
An air conditioning case 110 having a cold air passage 111 and a warm air passage 112 is provided,
In the air conditioning case 110, a cold air outlet 119a for discharging cold air from the cold air passage 111 to the outside and a warm air outlet 119b for discharging warm air from the warm air passage 112 to the outside are formed. becomes,
A discharge unit 125 is provided to smoothly discharge the air discharged through the cold air outlet 119a and the warm air outlet 119b.
An evaporator 104 is installed in the cold air passage 111, and a condenser 102 is installed in the warm air passage 112.
In the discharge unit 125, the condenser 102 and the hot air outlet 119b are disposed on the upper side of the air conditioning case 110, and the evaporator 104 and the cold air outlet 119a are disposed on the lower side. An air conditioning system for a vehicle, characterized in that the hot waste heat exchanged with the condenser (102) is discharged upward and the cold waste heat exchanged with the evaporator (104) is discharged downward. According to claim 1,
The discharge unit 125 is formed by forming the cold air outlet 119a and the warm air outlet 119b in a direction opposite to the driving direction of the vehicle, and is characterized in that resistance of the driving wind does not occur against the discharged air. air conditioning system for vehicles. delete delete According to claim 1,
A partition wall 113 is formed inside the air conditioning case 110 to partition a hot air passage 112 in which the condenser 102 is disposed and a cold air passage 111 in which the evaporator 104 is disposed,
The air conditioning system for a vehicle, characterized in that the warm air passage (112) is disposed above the partition wall (113), and the cold air passage (111) is disposed below the partition wall (113). According to claim 1,
A cover plate 126 is provided outside the cold air outlet 119a and the warm air outlet 119b in the air conditioning case 110 to prevent foreign substances from entering the cold air outlet 119a and the warm air outlet 119b. An air conditioning system for a vehicle, characterized in that. According to claim 6,
An auxiliary cool air outlet 127a is formed on the cover plate 126 on the side of the cold air outlet 119a to discharge the cold air passing through the cold air outlet 119a to the outside, and the cover on the side of the warm air outlet 119b is formed. An air conditioning system for a vehicle, characterized in that an auxiliary warm air outlet (127b) is formed on the plate (126) to discharge the warm air that has passed through the warm air outlet (119b) to the outside. According to claim 7,
The discharge unit 125 is formed by forming the auxiliary cold air outlet 127a and the auxiliary warm air outlet 127b in the direction opposite to the vehicle driving direction, so as not to generate resistance of the driving wind to the discharged air. A vehicle air conditioning system characterized by In the vehicle air conditioning system,
An air conditioning case 110 having a cold air passage 111 and a warm air passage 112 is provided,
In the air conditioning case 110, a cold air outlet 119a for discharging cold air from the cold air passage 111 to the outside and a warm air outlet 119b for discharging warm air from the warm air passage 112 to the outside are formed. becomes,
A discharge unit 125 is provided to smoothly discharge the air discharged through the cold air outlet 119a and the warm air outlet 119b.
An evaporator 104 is installed in the cold air passage 111, and a condenser 102 is installed in the warm air passage 112.
A cover plate 126 is provided outside the cold air outlet 119a and the warm air outlet 119b in the air conditioning case 110 to prevent foreign substances from entering the cold air outlet 119a and the warm air outlet 119b. become,
An auxiliary cool air outlet 127a is formed on the cover plate 126 on the side of the cold air outlet 119a to discharge the cold air passing through the cold air outlet 119a to the outside, and the cover on the side of the warm air outlet 119b is formed. An auxiliary warm air outlet 127b is formed on the plate 126 to discharge the warm air that has passed through the warm air outlet 119b to the outside.
Inside the air conditioning case 110, the condenser 102 and the hot air outlet 119b are disposed on the upper side, and the evaporator 104 and the cold air outlet 119a are disposed on the lower side,
The cover plate 126 on the side of the warm air outlet 119b has an inclined surface or a curved surface so that water introduced from the outside flows down due to its own weight. According to claim 1,
A distribution duct 200 for distributing cold and warm air discharged from the air conditioning case 110 to a specific location in the vehicle according to an air discharge mode is connected to and installed at the outlet 110b of the air conditioning case 110. air conditioning system for vehicles. According to claim 10,
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 dividing the vehicle interior and the engine room, and the distribution duct 200 is disposed inside the vehicle cabin. According to claim 1,
An air conditioning system for a vehicle, characterized in that a blower (130) for blowing air to the cold air passage (111) and the warm air passage (112) is installed in the air conditioning case (110).

Images