KR20120085990A - Air conditioning system for electric automotive vehicles - Google Patents

Abstract

PURPOSE: An air conditioning device for electric vehicles is provided to easily increase a wind speed with out being influenced by an air conditioning mode. CONSTITUTION: An air conditioning device for electric vehicles comprises an air conditioning case and a mode door(30). An air inlet is formed in an inlet of the air conditioning case. In the outlet side of the conditioning case, a defrost vent(12a), a face vent(12b), a floor vent(12c) are formed. The air conditioning case comprises an air hole(80) and an aspirator(70). The air hole is connected to a section between an evaporator(2) and an electronic heater(H). The aspirator is connected to the air hole to suck the air inside the vehicle. The mode door is installed to discharge the air, which has passed through the evaporator and the electronic heater.

Description

Air Conditioning System for Electric Vehicles {AIR CONDITIONING SYSTEM FOR ELECTRIC AUTOMOTIVE VEHICLES}

The present invention relates to an air conditioner for an electric vehicle, and more particularly, by forming an aspirator hole between an evaporator and an electric heater in an air conditioner of an electric vehicle, the air velocity drawn out of the air conditioning case without being affected by the air conditioning mode. It relates to an air conditioner for an electric vehicle to be maintained high.

In general, the vehicle air conditioner is installed for the purpose of securing the driver's front and rear view by removing the frost or the like that is worn on the windshield during the rainy season or the winter, or cooling or heating the interior of the car during the summer or winter season.

Such an air conditioning system is usually equipped with a heating device and a cooling device at the same time, and by selectively introducing the inside or outside air through a blower unit, the air is heated or cooled to blow into the vehicle interior, thereby cooling the interior of the vehicle. Heating, or ventilating.

Such an air conditioning apparatus includes a three piece type in which the three units are independently provided and an evaporator unit according to an arrangement structure of a blower unit, an evaporator unit, and a heater core unit. And a semi-center mounting type in which the heater core unit is built into the air conditioning case and the blower unit is provided as a separate unit, and a center mounting type in which all three units are built into the air conditioning case. Can be divided into

1 and 2 are views illustrating a semi-center type vehicle air conditioner, in which an air inlet 11 is formed at an inlet side, and a defrost vent 12a, a face vent 12b, and a floor at an outlet side. An air conditioner case having a vent vent (12c, 12d) formed therein, an evaporator (2) and a heater core (3) installed inside the air conditioner case (10), the evaporator (2) and a heater core ( 3) and a temperature control door (20) for controlling the temperature by adjusting the opening degree of the cold air passage (P1) bypassing the heater core (3) and the hot air passage (P2) passing through the heater core (3). And a mode door 30 installed at each of the vents 12a to 12d to adjust the opening degree of each of the vents 12a to 12d according to the air conditioning mode.

In addition, the air-conditioning case 10 is provided in the downstream side of the heater core 3, the heat transfer heater (H) for heating by using the electrical energy of the battery as an auxiliary heating device for heating at the initial start-up. .

On the other hand, the air inlet 11 side of the air conditioning case 10 is provided with a blower device 50 for blowing the internal and external air to the air conditioning case 10 side.

The blower 50 described above includes a blower case 53 formed of an intake duct 51 and a scroll case 52.

In the upper part of the blower case 53, an air inlet 54 and an air inlet 56 for introducing indoor and outdoor air are formed. The inlets 54 and 56 are opened and closed by internal and external air conversion doors 58 installed therebetween.

In addition, a blower 60 is installed below the blower case 53 to allow air to flow through the inlets 54 and 56.

The blower 60 includes a blower motor 62 and a blower fan 64 driven by the blower motor 62. The blowing fan 64 allows air to be introduced through the air inlet 54 or the air inlet 56 that is opened by the rotation of the internal and external air conversion doors 58.

The blowing fan 64 supplies the internal and external air introduced through the air inlet 54 or the outside air inlet 56 to the air conditioning case 10 through the air inlet 11.

In addition, the air blown by the blower 60 is exchanged with the refrigerant flowing in the evaporator 2 while passing through the evaporator 2 to be changed into cold air, and then the opening degree of the temperature control door 20 is controlled. As a result, some of the cold air moves to the mixing chamber MC by bypassing the heater core 3, and some of the cold air is heat-exchanged while passing through the heater core 3 to be converted into warm air and moved to the mixing chamber MC.

Thereafter, the cold air and the warm air flowing into the mixing chamber MC are mixed with each other, and then a predetermined air conditioning mode (Face Mode, Bi-Level Mode, Floor Mode, and Mix) is mixed. Mode (Mix Mode, Defrost Mode)] is discharged to the vehicle interior through each vent (12a ~ 12d) opened by the mode door 30, thereby performing the heating and cooling of the vehicle interior.

According to the vehicle air conditioner configured as described above, in the full cooling mode, by operating the temperature control door 20 to close the hot air flow passage (P2) and open the cold air flow passage (P1), The internal and external air blown by 60 is heat-exchanged in the evaporator 2 to be changed into cold air, and is discharged to the vehicle interior through an open vent through the cold air flow path P1 to perform cooling of the car.

In addition, in the maximum heating mode, the temperature control door 20 operates to open the hot air flow passage P2 and close the cold air flow passage P1.

As the air passing through the evaporator (2) passes through the hot air flow passage (P2) in this way, the heater core (3) is changed to warm air by heat exchange, and the warm air is discharged to the interior of the vehicle through an open vent to heat the car. Is performed.

However, the conventional air conditioner for a vehicle as described above has a problem in that as the temperature control door 20 is formed as a door plate, a passage is reduced by a shape or a structure, such that air volume decreases and other performances such as noise decrease. .

In addition, in the maximum cooling mode, the door is driven to block the hot air flow passage P2, but since the space downstream of the heater core 3 is opened, a part of the cold air passing through the evaporator 2 is the heater core 3. There is a problem that the heat pick-up (Heat Pick-Up) phenomenon is heated by the deterioration of the performance of the air conditioning apparatus.

By the way, the plate-type temperature control door 20 as described above occupies a lot of operating space, the temperature control door 20 is lifted or shaken due to wind pressure, there is a problem of noise generation, There is a problem that the airtightness that blocks the cold air passage (P1) or the hot air passage (P2) is lowered.

The flat type temperature control door 20 requires space as much as the operating range, making it difficult to miniaturize the air conditioning case and requires a door actuator, so that the temperature control door is omitted, such as an increase in cost and weight. There are many disadvantages.

In addition, as shown in FIG. 3, an air conditioner 10 is provided with an aspirator 70 for forcibly inhaling air in the vehicle interior to measure the temperature of the vehicle interior air.

The aspirator 70 is installed so as to communicate with the interior of the air conditioning case 10 and a venturi passage (not shown) is formed in which the passage is reduced so that a venturi action occurs. A suction pipe 72 for sucking the gas is provided.

Therefore, the air drawn out from the air conditioning case 10 by the positive pressure acting in the air conditioning case 10 is forced to suck the air in the vehicle interior to the venturi action generated in the course of passing through the interior of the aspirator 70. .

In this case, the hose 74 connected to the suction pipe 72 measures the temperature and humidity of the indoor air through the inca sensor unit 76.

However, when only the static pressure in the air conditioning case 10 is used or the static pressure is low, it is difficult to obtain sufficient wind speed through the aspirator 70, and eventually, the inca sensor unit 76 through the suction pipe 72. Low suction wind speed is difficult to properly detect the room temperature.

The aspirator air outlet hole 80 of the air conditioning case 10 in which the aspirator 70 is provided is mainly formed on the mixing chamber MC side. Accordingly, there is a problem that it is difficult to maintain a constant wind speed because it receives the wind speed resistance depending on the air conditioning mode and the position of the temperature control door 20.

On the other hand, in the electric vehicle air conditioner, as shown in Figure 4, the air inlet 11 is formed on the inlet side, the defrost vent (12a), face vent (12b), floor vents (12c, 12d) on the outlet side Is provided, the air passing through the evaporator (2) and the heat transfer heater (H), and the evaporator (2) and the heat transfer heater (H) which are installed in the internal air passage of the air conditioning case (10). It includes a mode door 30 is installed to be discharged in accordance with the air conditioning mode by adjusting the opening degree of each vent (12a ~ 12d).

4 shows that a sliding type door is applied as the mode door 30.

The mode door 30 is slidably installed in sliding grooves (not shown) formed in both side walls of the air conditioning case 10 and the sliding door 34 having the gear part 32 formed on one side thereof, and the air conditioning. The gear part 32 is rotatably coupled to the through-holes (not shown) formed on both side walls of the case 10, and the gear part 32 is formed to be engaged with the gear part 32 of the sliding door 34. It consists of a gear shaft 36 to operate.

The mode door 30 adjusts the amount of mixing of cold and warm air by adjusting the opening degree of each vent 12a to 12c according to the action of the heat transfer heater H.

Further, according to the configuration of the air conditioner of the electric vehicle, in the maximum cooling mode, as shown in Fig. 4, the vent door (12a ~ 12d) formed on the downstream side of the heat transfer heater (H) by sliding the mode door 30 By adjusting the opening degree, the air introduced by the blower 60 from the air inlet 11 passes through the evaporator 2 and under the control of the heat transfer heater H, the defrost vent 12a, the face vent 12b, The floor vents 12c and 12d are supplied to the interior of the vehicle to heat and cool the interior of the vehicle.

However, it is not proposed to form an aspirator hole for installing the aspirator in the air conditioner case for the electric vehicle to sense the temperature in the vehicle interior.

The present invention has been proposed to solve the above problems of the prior art, by forming the aspirator hole between the evaporator and the electric heater in the electric vehicle, it is possible to easily increase the wind speed without being affected by the air conditioning mode The purpose is.

Another object of the present invention is to allow the air passing through the evaporator to exit the aspirator air drawing hole at a high wind speed under the resistance of the heat transfer heater.

Still another object of the present invention is to enable the position of the aspirator to be easily selected without being influenced by an interference component such as a temperature control door.

The present invention for achieving this purpose, the air inlet is formed on the inlet side and the defrost vent, face vent, floor vent formed on the outlet side, the evaporator and the heat heater installed in the air passage of the air conditioning case And a mode door installed to discharge the air passing through the evaporator and the heat transfer heater according to the air conditioning mode through the opening degree control of each vent, wherein the air conditioning case comprises the evaporator and the air conditioner. And an aspirator connected to the air outlet hole so as to suck in-vehicle air to the in-car sensor unit through a flow rate of air drawn out from the air conditioning case. It is characterized by.

The air outlet hole is disposed in front of the heat transfer heater, which is a region closer to the heat transfer heater, among the areas between the evaporator and the heat transfer heater, so that the amount of air supplied to the aspirator side is increased by the ventilation resistance of the heat transfer heater. do.

The upper portion of the evaporator and the heat transfer heater is installed adjacent to each other, the lower portion is installed to be spaced apart from each other by a predetermined interval, the air outlet hole is characterized in that it is disposed in the upper region adjacent to the evaporator and the heat transfer heater.

The upper and lower portions of the evaporator and the heat transfer heater are partitioned by an air conditioning case so that all the air passing through the evaporator passes through the heat transfer heater.

According to the present invention, by forming the aspirator hole between the evaporator and the heat transfer heater in the electric vehicle, there is an effect that can easily increase the wind speed of the air without being affected by the air conditioning mode.

In addition, there is an effect that the air passing through the evaporator is able to exit the aspirator air drawing hole at a high wind speed under the resistance of the heat transfer heater.

In addition, since there is no interference component such as a temperature control door between the evaporator and the heat transfer heater, the position of the aspirator can be easily selected.

1 is a view schematically showing a configuration of a general vehicle air conditioner.
Figure 2 is a view showing that the heat transfer heater is installed in the air conditioning apparatus shown in FIG.
FIG. 3 is a view showing that an aspirator is installed in the air conditioning apparatus shown in FIG. 2. FIG.
Figure 4 is a schematic view showing the configuration of an air conditioner for an electric vehicle according to the prior art.
5 is a view schematically showing the configuration of an air conditioner for an electric vehicle according to an embodiment of the present invention.
6 is a view showing that the air outlet hole shown in FIG. 5 is disposed adjacent to the heat transfer heater.
FIG. 7 is a view showing that the air outlet holes shown in FIG. 5 are disposed in an upper region of the evaporator and the heat transfer heater.
FIG. 8 is a perspective view showing the air conditioner for an electric vehicle shown in FIG. 5. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 4, an air inlet 11 is formed at an inlet side, and a defrost vent 12a, a face vent 12b, and a floor vent 12c, 12d are disposed at an outlet side, as shown in FIG. The formed air conditioning case 10, the evaporator 2 and the heat transfer heater (H) installed in the internal air passage () of the air conditioning case 10, the air passing through the evaporator (2) and the heat transfer heater (H) It includes a mode door 30 is installed to be discharged in accordance with the air conditioning mode through the opening degree control of each vent (12a ~ 12c).

 Next, the features of the air conditioner for an electric vehicle according to the present invention will be described with reference to FIGS. 5 to 6.

The electric vehicle air conditioner includes an aspirator air drawing hole 80 in which the aspirator 70 is installed.

The air outlet hole 80 is preferably formed between the evaporator 2 and the heat transfer heater (H). That is, the heat transfer from the area indicated by the area dividing line L between the evaporator 2 and the heat transfer heater H so that the amount of air supplied to the aspirator 70 increases by the ventilation resistance of the heat transfer heater H. It is disposed in front of the heat transfer heater H, which is an area closer to the heater H.

In addition, the air outlet hole 80 may be located above the horizontal center line where the wind speed of the air volume passing through the evaporator 2 is strong in the region indicated by the area dividing line L. FIG.

The aspirator air outlet hole 80, even if located between the evaporator (2) and the electric heater (H), because the conventional temperature control door is omitted due to the characteristics of the air conditioner for electric vehicles, the resistance of the wind speed Do not receive.

That is, since the temperature of the air can be controlled by controlling the heat transfer heater H, the air conditioner for the electric vehicle can omit the temperature control door.

In addition, the aspirator air outlet hole 80 formed between the evaporator 2 and the heat transfer heater H does not receive the wind speed resistance of the conventional temperature control door 20, as well as each vent 12a. It is also not affected by the mode door 30 for adjusting the opening degree of ˜12c).

As a result, the electric vehicle air conditioner can easily select the position of the aspirator 70.

In addition, the air outlet hole 80, the front of the electric heater (H) that can be resisted by the wind speed of the air passing through the evaporator (2) so that the wind speed of the air to the aspirator 70 at high speed withdrawal Is formed.

That is, the wind speed of the air passing through the evaporator 2 is resisted by the heat transfer heater H, and at this time, the aspirator air withdrawal formed on the side of the air conditioning case 10 in front of the heat transfer heater H The ball 80 exits at a high wind speed.

In addition, the aspirator air outlet hole 80 formed in front of the heat transfer heater (H), so that the air passing through the heat transfer heater (H) is drawn to the aspirator 70 side before the wind speed is reduced. .

In addition, since the air outlet hole 80 for the aspirator is formed at a position where air can be drawn out after passing through the evaporator 2, the wind speed resistance by the temperature control door, the mode door and the vent as in the prior art Is not affected.

Accordingly, the aspirator air outlet hole 80 allows the strong air volume to be easily drawn out to the aspirator 70.

In addition, the upper portion of the evaporator 2 and the heat transfer heater (H) is provided adjacent to each other, the lower portion is provided to be spaced apart from each other by a predetermined interval. In addition, the air outlet hole 80 is preferably disposed in the upper region adjacent to the evaporator 2 and the heat transfer heater H in the region indicated by the area dividing line L.

In addition, the upper and lower portions of the evaporator 2 and the heat transfer heater H are partitioned by an air conditioning case 10 so that all the air passing through the evaporator 2 passes through the heat transfer heater H.

Hereinafter, the effect | action of this invention made as mentioned above is demonstrated.

Blowing air blown by the drive of the blower 60 is cooled by heat exchange while passing through the evaporator (2).

The cold air passing through the evaporator 2 is drawn out through the aspirator 70 through the aspirator air outlet hole 80 formed at the front while receiving the ventilation resistance of the heat transfer heater H.

By the venturi action by the air discharged from the aspirator 70, the air in the vehicle interior is sucked through the in-car sensor unit 76 provided in the intake pipe 72.

The indoor temperature of the vehicle sensed by the inca sensor unit 76 is provided to a controller (not shown) for controlling the heat transfer heater H. Accordingly, the control unit of the electric vehicle air conditioner is to control the heat transfer heater (H) in accordance with the temperature of the vehicle interior.

For example, when supplying cold air to the interior of the vehicle, the operation of the heat transfer heater (H) is stopped so that the cold air passing through the evaporator 2 is supplied to the interior of the vehicle as it is.

On the contrary, when the hot air is to be supplied to the interior of the vehicle, the cold air passing through the evaporator 2 is heated to a predetermined temperature in the heat transfer heater H and then supplied to the interior of the vehicle.

That is, the air conditioner for an electric vehicle may control the heat transfer heater H to adjust the temperature of the cold and hot air.

As described above, the cold or warm air that has passed through the heat transfer heater H is defrosted vent 12a and face which are opened under the guidance of the mode door 30 installed in the sliding type on each vent 12a to 12c side. It is discharged in the vehicle interior through the vent 12b and the floor vents 12c and 12d.

The defrost vent 12a, the face vent 12b, and the floor vents 12c, 12d move the sliding door plate 34 sliding in rotation of the gear shaft 36 constituting the mode door 30. By this, the vents 12a to 12b are opened.

The air conditioning apparatus for the electric vehicle blows air in the cabin so that a comfortable riding environment is provided to the passengers through the vents 12a to 12c whose opening degrees are controlled through the control of the mode door 30.

The present invention is formed by placing the air outlet hole for the aspirator between the evaporator and the electric heater in the air conditioner for the electric vehicle, so that a strong wind speed is maintained in the aspirator, it can be widely used in the field of vehicle air conditioners .

2: Evaporator 3: Heater Core
10: air conditioning case 11: air inlet
12a: Defrost Vent 12b: Face Vent
12c: Floor Vent 30: Mode Door
70: aspirator 80: air outlet for the aspirator
H: Electric Heater

Claims (4)

An air inlet 11 is formed at the inlet side, and a defrost vent 12a, a face vent 12b, a floor vent 12c, 12d is formed at the outlet side, and the air conditioning case 10 The air passing through the evaporator (2) and the heat transfer heater (H) and the evaporator (2) and the heat transfer heater (H) installed in the internal air passage is controlled to the air conditioning mode by controlling the opening degree of each of the vents (12a to 12c). In the air conditioner for an electric vehicle comprising a mode door 30 is installed to be discharged along,
The air conditioning case 10,
It is provided with an air outlet hole 80 communicated with the region between the evaporator 2 and the heat transfer heater (H), and the difference toward the in-car sensor unit 76 through the flow rate of air drawn out from the air conditioning case (10) And an aspirator (70) connected to the air outlet hole (80) to suck indoor air. The method of claim 1,
The air drawing hole 80,
Heat transfer which is an area closer to the heat transfer heater H among the area between the evaporator 2 and the heat transfer heater H such that the amount of air supplied to the aspirator 70 is increased by the ventilation resistance of the heat transfer heater H. Air conditioner for an electric vehicle, characterized in that disposed in front of the heater (H). The method of claim 1,
The upper part of the evaporator 2 and the heat transfer heater (H),
It is installed adjacent to each other, the lower portion is installed spaced apart from each other, the air outlet hole 80 is for an electric vehicle, characterized in that disposed in the upper region adjacent to the evaporator 2 and the heat transfer heater (H) Air conditioning system. The method of claim 1,
Air conditioning for the electric vehicle, characterized in that the upper and lower portions of the evaporator and the heat transfer heater (H) is partitioned by an air conditioning case (10) so that all the air passing through the evaporator (2) passes through the heat transfer heater (H). Device.

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