KR102686595B1 - Air conditioner for vehicles having blower unit - Google Patents

Abstract

Disclosed is a vehicle air conditioning device in which the blower unit and heat exchanger are placed outside the car, where the engine room is located, and only the discharge duct is placed inside the car, but the arrangement of the blower unit is optimized to minimize interference with engine room parts. A vehicle air conditioner with an optimized arrangement of the blower unit includes an air conditioning case with an air passage formed inside, a cooling heat exchanger and a heating heat exchanger provided in the air passage of the air conditioning case, and a blower unit that blows air into the air passage. It includes, the blower unit, the cooling heat exchanger, and the heating heat exchanger are disposed outdoors with respect to the dashboard, and the blower unit is disposed below the cooling heat exchanger and the heating heat exchanger.

Description

Vehicle air conditioning system equipped with a blower unit {AIR CONDITIONER FOR VEHICLES HAVING BLOWER UNIT}

The present invention relates to an air conditioning device for a vehicle, and more specifically, to an air conditioning device for a vehicle with an optimized arrangement of the blower unit in which the blower unit and the heat exchanger are placed outside the vehicle interior and only the discharge duct is placed inside the vehicle interior.

In general, a vehicle air conditioning device is a device for cooling or heating the vehicle interior by introducing air from outside the vehicle into the vehicle interior or by heating or cooling the air in the process of circulating air inside the vehicle. Inside the air conditioning case, an evaporator for cooling and a heater core for heating are provided. A vehicle air conditioning system is configured to selectively blow air cooled or heated by an evaporator or heater core to each part of the vehicle interior using a door for switching the blowing mode.

The cooling cycle of an air conditioning system consists of a compressor that compresses and delivers refrigerant, a condenser that condenses the high-pressure refrigerant delivered from the compressor, and an expansion valve that throttles the liquefied refrigerant condensed in the condenser. ) and an evaporator that evaporates the low-pressure liquid refrigerant compressed by the expansion valve by exchanging heat with the air blowing into the vehicle interior, thereby cooling the air discharged into the interior through the heat absorption effect of the latent heat of evaporation of the refrigerant, etc. are refrigerant pipes. It is connected by .

Recently, heat pump systems that perform cooling and heating using only a cooling cycle have been developed. A vehicle air conditioning device having a conventional vehicle heat pump system includes an air conditioning case, an evaporator as a cooling heat exchanger, a condenser as a heating heat exchanger, a compressor, an expansion valve, and a blower unit. In the air conditioning case, a first air passage, which is a heating passage, and a second air passage, which is a cooling passage, are partitioned by a partition wall. Internal or external air is selectively introduced through the first air passage and the second air passage.

The air conditioning case is provided with an air inlet and an air outlet. Air flows into the air conditioning case through the air inlet, and air is discharged from the air conditioning case through the air outlet. The air inlet has an internal air inlet and an external air inlet. Inside the air conditioning case, an internal and external air switching door is provided to selectively introduce internal and external air into the first and second air passages.

In a conventional vehicle air conditioning system, in order to secure a wide interior space, components such as blower unit, heat exchanger such as evaporator and condenser, compressor, expansion valve, etc. are placed outdoors in the engine room based on the dashboard, and only the discharge duct is installed. It is constructed by connecting indoors.

Conventional automotive air conditioning systems minimize the volume of the dashboard in order to secure more interior space in the development of new vehicles such as electric vehicles and autonomous vehicles. Because of this, there is no space or it is very narrow in the interior space of the vehicle for installing an air conditioning device. Therefore, part of the air conditioning system is designed to be moved to the engine room, but there is a problem of interference with engine room parts such as motors and inverters.

Patent document: Japanese Patent Publication No. 1995-104764 (April 21, 1995)

In order to solve such conventional problems, in the present invention, the blower unit and heat exchanger are placed outside the vehicle interior where the engine room is located, and only the discharge duct is placed inside the vehicle interior, but the arrangement of the blower unit is optimized to minimize interference with engine room parts. Air conditioning equipment is provided.

A vehicle air conditioning device with an optimized arrangement of the blower unit according to the present invention includes an air conditioning case with an air flow path formed inside, a cooling heat exchanger and a heating heat exchanger provided in the air flow path of the air conditioning case, and air flowing through the air flow path. It includes a blower unit that blows air, and the blower unit, a heat exchanger for cooling, and a heat exchanger for heating are disposed outdoors relative to the dashboard, and the blower unit is disposed below the heat exchanger for cooling and the heat exchanger for heating.

In the above, the blower unit is configured to suck air in the side direction and discharge air in the upper direction.

In the above, the blower unit includes a blower wheel and a blower motor that rotates the blower wheel, and the rotation axis of the blower wheel is formed in a horizontal direction.

In the above, the blower unit includes a scroll case, and the air discharge direction of the scroll case is formed parallel to the longitudinal direction of the cooling heat exchanger and the heating heat exchanger.

In the above, the rotation axis of the blower wheel is formed in a direction parallel to the vehicle width direction.

In the above, the rotation axis of the blower wheel is located behind the cooling heat exchanger in the front and rear direction of the vehicle.

In the above, the rotation axis of the blower wheel is disposed between the cooling heat exchanger and the heating heat exchanger in the front and rear direction of the vehicle.

In the above, an external air inlet for introducing external air into the blower unit and an internal air inlet for introducing internal air are provided, the external air inlet is formed at the upper part of the blower unit, and the internal air inlet is formed at the lower part of the blower unit.

In the above, the outside air flowing in through the outside air inlet moves downward and is sucked into the blower unit through the side direction, and the inside air flowing in through the outside air inlet moves upward and is sucked into the blower unit through the side direction.

In the above, the air conditioning case is provided with a discharge duct having a plurality of air discharge ports for discharging air that has passed through the cooling heat exchanger or the heating heat exchanger into the vehicle interior, and the discharge duct is arranged in the interior with respect to the dashboard. .

In the above, at least one Temp door is provided to control the temperature of the discharged air by adjusting the amount of cold air passing through the cooling heat exchanger and warm air passing through the heating heat exchanger, and the Temp door is positioned outdoors with respect to the dashboard. It is placed.

The vehicle air conditioning device with an optimized arrangement of the blower unit according to the present invention optimizes the position of the blower unit and optimizes the rotation axis direction of the blower wheel and the air inflow and discharge directions of the scroll case, thereby improving the vehicle front and rear direction (T direction) and vehicle width. Not only can the size in the direction (L direction) be minimized, but the air flowing in from the outside air inlet and inside inlet can have a minimum bending section and create a smooth air flow. In other words, by reducing air flow resistance, efficient arrangement of components is possible without causing a decrease in air volume.

1 is a side cross-sectional view showing an air conditioning system for a vehicle according to an embodiment of the present invention;
Figure 2 is a front cross-sectional view showing a blower unit of a vehicle air conditioning system according to an embodiment of the present invention;
Figure 3 schematically shows the blower unit, outdoor air inlet, and outdoor air inlet of a vehicle air conditioning system according to an embodiment of the present invention;
Figure 4 shows a cooling mode of a vehicle air conditioning system according to an embodiment of the present invention.
Figure 5 shows a heating mode of a vehicle air conditioning system according to an embodiment of the present invention.
Figure 6 shows a mixing mode of a vehicle air conditioning system according to an embodiment of the present invention.

Below, the technical configuration of a vehicle air conditioning system with optimized arrangement of the blower unit will be described in detail according to the attached drawings.

Figure 1 is a side cross-sectional view showing an air conditioning system for a vehicle according to an embodiment of the present invention, Figure 2 is a front cross-sectional view showing a blower unit of an air conditioning system for a vehicle according to an embodiment of the present invention, and Figure 3 is a cross-sectional view showing the blower unit of the air conditioning system for a vehicle according to an embodiment of the present invention. This schematically illustrates the blower unit, outside air inlet, and outside air inlet of a vehicle air conditioning system according to an embodiment of.

In the following description, the T direction in FIG. 1 is the vehicle front and rear direction, the H direction is the up and down direction, and the L direction in FIG. 2 is the vehicle width direction.

Referring to Figures 1 to 3, an air conditioning device for a vehicle according to an embodiment of the present invention includes an air conditioning case 110 with an air flow path formed therein, and a blower unit ( 120). The blower unit 120 is configured to selectively introduce internal and external air.

In addition, a cooling heat exchanger and a heating heat exchanger are sequentially provided in the air flow path of the air conditioning case 110 in the air flow direction. The cooling heat exchanger consists of an evaporator 102, and the heating heat exchanger consists of an internal condenser 103 and an electric heater 104 such as a PTC. The heat exchanger for heating may also be composed of a heater core that uses engine coolant as a heat source.

The air conditioning case 110 is provided with a discharge duct 130. The discharge duct 130 is for discharging air that has passed through the cooling heat exchanger or the heating heat exchanger into the vehicle interior, and has a plurality of air discharge ports. The air outlet may be comprised of a front seat air outlet that discharges air to the front seats of the vehicle and a rear seat air outlet (134) that discharges air to the rear seat of the vehicle.

The front seat air outlet consists of a defrost vent (131) that blows air toward the window, a face vent (132) that blows air toward the passenger's face, and a front seat floor vent (133) that blows air toward the passenger's feet. The rear seat air outlet 134 may be composed of a console vent (or B-pillar) and a rear seat floor vent.

The vehicle air conditioning system includes at least one temp door that adjusts the temperature of discharged air by adjusting the amount of cold air passing through the cooling heat exchanger and warm air passing through the heating heat exchanger.

The air flow path in the air conditioning case 110 is a warm air flow path that allows the air passing through the evaporator 102 to pass through the internal condenser 103 and the electric heater 104, and the air passing through the evaporator 102 flows through the internal condenser 103. ) and a cold air passage to bypass the electric heater 104.

The cold air passage consists of an upper cold air passage that bypasses the internal condenser 103 and the electric heater 104 upward, and a lower cold air passage that bypasses the internal condenser 103 and the electric heater 104 downward. The air flowing in the upper cool air flow path may be mainly discharged through the front seat air outlet, and the air flowing in the lower cool air flow path may be configured to be mainly discharged through the rear seat air outlet.

The Temp door includes a front Temp door (111), a front auxiliary Temp door (113), a rear Temp door (112), and a rear auxiliary Temp door (114).

The front door temp door 111 is provided between the evaporator 102 and the internal condenser 103, and adjusts the opening degree between the inlet of the upper cold air passage and the hot air passage. The front seat auxiliary temperature door 113 is provided downstream of the electric heater 104 and adjusts the opening degree of the outlet of the hot air flow path. The rear temp door 112 is provided between the evaporator 102 and the internal condenser 103, and adjusts the opening degree between the inlet of the lower cold air passage and the warm air passage. The rear seat auxiliary temperature door 114 is provided downstream of the electric heater 104 and adjusts the opening degree between the rear seat cold air passage and the outlet of the hot air passage.

The discharge duct 130 is provided with a plurality of mode doors. The mode door is a defrost door 135 that controls the opening degree of the defrost vent 131, a face door 136 that controls the opening degree of the face vent 132, and a front door floor vent 133 that controls the opening degree. It is provided with a floor door 137 and a rear seat mode door 138 that adjusts the opening degree of the rear seat air outlet 134.

The discharge duct 130 is placed indoors with the dashboard 500 as the reference. That is, the discharge duck 130, defrost door 135, face door 136, floor door 137, and rear seat mode door 138 are all arranged indoors with the dashboard 500 as the basis.

In addition, the blower unit 120, evaporator 102, internal condenser 103, and electric heater 104 are arranged outdoors with respect to the dashboard 500. In addition, the front seat temp door 111, the front auxiliary temp door 113, the rear seat temp door 112, and the rear auxiliary temp door 114 are arranged outdoors with respect to the dashboard 500. In the case of electric vehicles, an engine room such as motors and inverters is installed outdoors.

The blower unit 120 is disposed below the cooling heat exchanger and the heating heat exchanger. That is, the blower unit 120 is disposed below the evaporator 102, the internal condenser 103, and the electric heater 104. Preferably, the blower unit 120 is disposed on a lower extension line directly below the evaporator 102.

In detail, the blower unit 120 is configured to suck air from the side direction and discharge air toward the top. More specifically, the blower unit 120 includes a scroll case 122, a blower wheel 123, and a blower motor 124 that rotates the blower wheel 123.

That is, the blower unit 120 is disposed at the lower part of the heat exchanger, and the direction of inflow air of the blower unit 120 can be disposed to the left, right, front, or rear of the vehicle depending on other surrounding parts. Preferably, the direction of inflow air of the blower unit 120 is arranged on the left or right side of the vehicle. Through this configuration, the degree of freedom regarding the air inflow direction of the blower unit 120 can be increased while avoiding interference between surrounding parts.

The scroll case 122 is a substantially spiral-shaped case surrounding the blower wheel 123, and the air discharge direction of the scroll case 122 is formed parallel to the longitudinal direction of the cooling heat exchanger and the heating heat exchanger. That is, the air discharge direction of the scroll case 122 is from the bottom to the top.

Additionally, the rotation axis 121 of the blower wheel 123 is formed in a horizontal direction. That is, the rotation axis 121 of the blower wheel 123 is formed in a direction parallel to the vehicle width direction. In addition, the rotation axis 121 of the blower wheel 123 is located at the rear of the evaporator 102 in the front and rear direction of the vehicle. More preferably, the rotation axis 121 of the blower wheel 123 is disposed between the evaporator 102 and the internal condenser 103 in the front and rear direction of the vehicle.

Through this configuration of optimizing the position of the blower unit 120, it is possible to minimize the size in the front-to-back direction (T direction) of the vehicle and the vehicle width direction (L direction), thereby creating a package for new vehicles such as electric vehicles and autonomous vehicles. An air conditioning system can be effectively installed inside, and the interior space in the front of the vehicle can be increased.

Meanwhile, the vehicle air conditioning system is provided with an external air inlet 128 and an internal air inlet 129. The outside air inlet 128 is for introducing outside air into the blower unit 120, and the inside air inlet 129 is for introducing inside air into the blower unit 120. The outside air inlet 128 is disposed at the upper part of the blower unit 120, and the internal air inlet 129 is formed at the lower part of the blower unit 120.

As shown by the arrow in FIG. 3, the outside air flowing in through the outside air inlet 128 moves downward and is sucked into the blower unit 120 through the side direction. In addition, the air flowing in through the air inlet 129 moves upward and is sucked into the blower unit 120 through the side direction.

Considering the driving direction of the vehicle, it is preferable that the outside air inlet 128 is placed at the top of the vehicle body rather than the bottom, and is opened toward the front to allow outside air to smoothly flow into the blower unit 120 when the vehicle is driving. The air inlet 129 is placed at the bottom of the vehicle to allow smooth circulation of air while minimizing interference with the outside air inlet 128 to increase space utilization.

In this way, by optimizing the position of the blower unit 120 and optimizing the direction of the rotation axis 121 of the blower wheel 123 and the air inflow and discharge directions of the scroll case 122, the vehicle front and rear direction (T direction) and vehicle width Not only can the size in the direction (L direction) be minimized, but the air flowing in from the outside air inlet 128 and the inside inlet 129 can have a minimum bending section and create a smooth air flow. In other words, by reducing air flow resistance, efficient arrangement of components is possible without causing a decrease in air volume.

Figure 4 shows a cooling mode of a vehicle air conditioning system according to an embodiment of the present invention.

Referring to FIG. 4, in the cooling mode, the air blown from the blower unit 120 moves from the bottom to the top and passes through the evaporator 102 in the horizontal direction, and some of it is discharged to the face vent 132 through the upper cold air passage. and the other part is discharged to the rear seat air outlet (134) through the lower cold air passage.

In this case, the front seat temp door (111) and the front seat auxiliary temp door (113) close the hot air flow path and open the front seat cold air flow path, and the rear seat temp door (112) and the rear seat auxiliary temp door (114) close the hot air flow path. Open the rear seat cooling air passage.

Figure 5 shows a heating mode of a vehicle air conditioning system according to an embodiment of the present invention.

Referring to FIG. 5, in the heating mode, the air blown from the blower unit 120 moves from the bottom to the top, passes through the evaporator 102 in the horizontal direction, and then flows into the internal condenser 103 and the electric heater 104 in the hot air flow path. ) passes through. Part of the air that has passed through the warm air passage is discharged to the front seat floor vent (133) and the other part is discharged to the rear seat air outlet (134).

In this case, the front seat temp door (111) and the front seat auxiliary temp door (113) open the hot air flow path and close the front seat cold air flow path, and the rear seat temp door (112) and the rear seat auxiliary temp door (114) open the hot air flow path. Close the rear seat cooling air passage.

Figure 6 shows a mixing mode of a vehicle air conditioning system according to an embodiment of the present invention.

Referring to FIG. 6, in the mixing mode, the air blown from the blower unit 120 moves from the bottom to the top and passes through the evaporator 102 in the horizontal direction, and then part of it moves to the front and rear cold air channels, The other part passes through the internal condenser 103 and the electric heater 104 of the hot air flow path. The air that has passed through the front seat cold air passage and the warm air passage is mixed and discharged to the face vent (132), and the air that has passed through the rear seat cold air passage and the warm air passage is mixed and discharged to the rear seat air outlet (134).

In this case, the front seat temp door (111) and the front seat auxiliary temp door (113) open both the hot air passage and the front seat cold air passage, and the rear seat temp door (112) and the rear seat auxiliary temp door (114) open the hot air passage and the rear seat cold air passage. Open all.

So far, the vehicle air conditioning system with optimized arrangement of the blower unit according to the present invention has been described with reference to the embodiment shown in the drawings, but this is merely an example, and anyone skilled in the art can make various modifications and other equivalent embodiments. You will understand that Therefore, the true scope of technical protection should be determined by the technical spirit of the attached patent claims.

110: Air conditioning case 111: Temp door for all seats
112: Rear seat Temp door 113: Front seat auxiliary Temp door
114: Rear auxiliary temperature door 102: Evaporator
103: Internal condenser 104: Electric heater
120: blower unit 121: rotation shaft
122: scroll case 123: blower wheel
124: blower motor 128: outside air inlet
129: Inlet 130: Discharge duct
131: Defrost vent 132: Face vent
133: Front seat floor vent 134: Rear seat air outlet
135: Defrost door 136: Defrost door
137: Floor door 138: Rear seat mode door
500: Dashboard

Claims (12)

It includes an air conditioning case with an air flow path formed therein, a cooling heat exchanger and a heating heat exchanger provided in the air flow path of the air conditioning case, and a blower unit that blows air into the air flow path,
The blower unit, cooling heat exchanger, and heating heat exchanger are placed outdoors relative to the dashboard,
The blower unit is disposed below the cooling heat exchanger and the heating heat exchanger,
The blower unit has a blower wheel and a blower motor that rotates the blower wheel,
The rotation axis of the blower wheel is provided with a blower unit formed in a horizontal direction,
An air conditioning device for a vehicle equipped with a blower unit, characterized in that the rotation axis of the blower wheel is disposed between a cooling heat exchanger and a heating heat exchanger in the front and rear direction of the vehicle. According to claim 1,
An air conditioning device for a vehicle equipped with a blower unit, characterized in that the blower unit is configured to suck air in a side direction and discharge air in an upper direction. delete According to claim 1,
The blower unit is provided with a scroll case, and the air discharge direction of the scroll case is formed parallel to the longitudinal direction of the cooling heat exchanger and the heating heat exchanger. According to claim 1,
An air conditioning device for a vehicle equipped with a blower unit, characterized in that the rotation axis of the blower wheel is formed in a direction parallel to the width direction of the vehicle. delete delete According to claim 1,
The blower unit is provided with an outside air inlet for introducing outside air and an inside air inlet for introducing inside air,
An air conditioning device for a vehicle equipped with a blower unit, wherein the outside air inlet is formed at the top of the blower unit, and the inside air inlet is formed at the bottom of the blower unit. According to clause 8,
The outside air flowing in through the outside air inlet moves downward and is sucked into the blower unit through the side direction,
An air conditioning device for a vehicle equipped with a blower unit where the air flowing in through the air inlet moves upward and is sucked into the blower unit through the side direction. According to claim 1,
The air conditioning case is provided with a discharge duct having a plurality of air discharge ports for discharging air that has passed through the cooling heat exchanger or the heating heat exchanger into the vehicle interior,
An air conditioning device for a vehicle equipped with a blower unit, characterized in that the discharge duct is arranged indoors with respect to the dashboard. According to claim 10,
It has at least one temp door that adjusts the temperature of the discharged air by adjusting the amount of cold air passing through the cooling heat exchanger and warm air passing through the heating heat exchanger,
An air conditioning device for a vehicle equipped with a blower unit, wherein the Temp door is disposed outdoors with respect to the dashboard. According to clause 2,
An air conditioning device for a vehicle equipped with a blower unit, characterized in that the air inflow direction of the blower unit is disposed on the left or right side of the vehicle.

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