KR20030035144A - Center mounting type airconditioner having structure of two layer air flow for vehicles - Google Patents

Abstract

PURPOSE: A center mounting type air conditioner having a structure of two layer air flow for vehicles is provided to cozily control heating and cooling. CONSTITUTION: A blower(60) includes a scroll case(62) divided into a left scroll part(62L) and a right scroll part(62R), and having discharge ports(63L,63R) of the left scroll part and the right scroll part extended and connected with an inlet of an air conditioner case to blow air separately to a first channel and a second channel; a left intake duct(69L) and a right intake duct(69R) installed on a left side and a right side of the scroll case, and having inside air suction ports(71) and an outside air suction ports(73) having opening degree controlled by switching doors(75) to suck air to the left scroll part and the right scroll part; a left fan(65L) and a right fan(65R) placed in the left scroll part and the right scroll part; and a motor(67) simultaneously rotating the left fan and the right fan.

Description

CENTER MOUNTING TYPE AIRCONDITIONER HAVING STRUCTURE OF TWO LAYER AIR FLOW FOR VEHICLES}

The present invention relates to a center mounting type automotive air conditioner having a two-layer air flow structure, and in particular, a center mounting having a two-layer air flow structure capable of separately blowing air into two flow paths by a double suction blower. It relates to an air conditioner for a type vehicle.

The air conditioners can be classified into three-piece type air conditioners, semi-center mounting type air conditioners, and center mounting type air conditioners according to the organic structure of the blower unit, the evaporator unit, and the heater core unit. . Among them, the center mounting type air conditioner is reduced in size by installing all three units in one case.

However, the air conditioners described above are designed to blow air by employing an air blower provided with an internal / external air intake port and one blower fan. Therefore, when only the outside air is blown into the room through the outside air intake in the cooling mode, the load of the compressor increases, and there is a lot of fuel loss. When circulating only the inside of the air through the inside of the air intake, the air inside the vehicle is contaminated to harm the occupant's health. In addition, even when the conversion door is placed in a neutral position and internal / external air is supplied together, internal / external air is mixed in the air flow path of the air conditioning case, thereby preventing the passenger from feeling fresh air. On the other hand, heating performance and defrosting performance are also low.

In consideration of this, two-layer air flow structure air conditioners have been proposed that can be supplied to the interior of an automobile by separating or mixing internal / external air by adopting two blower fans, but most of them are semi-center mounting type air conditioners. In the case of the center mounting type air conditioner, the two-layer air flow structure is not applied due to the difficulty of design. Even though the center mounting type air conditioner with the two-layer air flow structure is applied, most of them are for the purpose of increasing the air volume or multi-control the cooling and heating, but the air is blown to the left and right sides of the air conditioning case, but the air conditioning It is mixed inside the case.

Accordingly, an object of the present invention is to provide a vehicle air conditioner having a two-layer air flow structure that can be comfortably heated and controlled and compact by applying a two-layer air flow structure to a center mounting type air conditioner. .

1 is a cross-sectional view showing an air conditioner according to the present invention.

2 is a cross-sectional view showing a blower constituting the air conditioner according to the present invention.

3 is a view for explaining the air blowing structure of the blower constituting the air conditioner according to the present invention.

4 is a cross-sectional view showing the air flow structure in the bet-cooling face vent mode.

5 is a cross-sectional view showing the air flow structure in the bet-by-level mode.

6 is a cross-sectional view showing the air flow structure in the air-heating mix mode.

7 is a cross-sectional view showing the air flow structure in the air-heating foot mode.

8 is a cross-sectional view showing the air flow structure in the air-heating defrost mode.

<Explanation of symbols for the main parts of the drawings>

10: evaporator, 20: heater core,

30: air conditioning case, 32: first euro,

32a: upper air passage, 34: second flow path,

34a: lower air passage, 36: dividing wall,

36H: horizontal portion, 36V: upward bend portion,

38: forward flow path, 40: rear flow path,

42, 44, 46: vent, 48, 50, 52, 54: temperature control door,

60: blower, 62L, 62R: scroll portion,

62: scroll case, 63L, 63R: discharge port,

65L, 65R: blower fan, 67: motor,

69L, 69R: intake duct, 71: air intake,

73: outside air intake, 75: switching door

In order to achieve the above object, the present invention, the defrost vent, the face vent and the air flow is divided into the first flow path and the lower second flow path of the upper flow path by the separating wall, respectively by the door opening and closing by the door and An air conditioner case discharging into the interior of the vehicle through vents opened according to a predetermined cooling / heating mode among the foot vents, an evaporator and a heater core which are sequentially installed at predetermined intervals on the upstream and downstream sides of the internal flow path of the air conditioning case, and In a center mounting type automotive air conditioner having a two-layer air flow structure including a blower installed at the inlet of an air conditioning case:

The blower is divided into a left and right scroll portion, and the scroll case is connected to the inlet of the air conditioning case so that the discharge port of the left and right scroll portion is bent up and down to separate and blow the air to the first flow path and the second flow path, and the scroll case Left and right intake ducts having air inlets and outside air inlets, each of which is opened by a switching door to suck air toward the left and right scroll units, the left and right blowing fans disposed on the left and right scroll units, and the left and right sides It is characterized by having a motor for rotating the blowing fan at the same time.

According to the present invention, the dividing wall includes a horizontal portion and an upward bent portion, wherein the horizontal portion extends from the front of the evaporator to the rear of the heater core to partition the internal flow path of the air conditioning case into the first flow path and the second flow path, The upward bend portion is bent upwardly in correspondence with the rear wall surface of the air conditioning case from the rear end of the horizontal portion to divide the rear of the heater core into a front flow passage communicating with the first flow passage and a rear flow passage communicating with the first flow passage and the second flow passage.

In addition, a first temperature control door is installed in front of the upper half of the heater core to adjust the air passing through the upper half of the evaporator to the upper air passage between the upper end of the evaporator and the upper end of the heater core, or to open the front side of the upper half of the heater core. In front of the lower half of the heater core, a lower air passage between the lower half of the evaporator and the lower portion of the heater core, or a second temperature control door for adjusting the opening degree of the front side of the lower half of the heater core, is installed. At the rear of the lower half, a third temperature control door is installed to adjust the opening degree of the lower half of the heater core or the second flow path.

The door for opening and closing the foot vent has a function of selectively opening and closing the rear flow passage.

In addition, a fourth temperature control door may be further rotatably installed on the front surface of the upward bent portion of the dividing wall to adjust the opening degree of the front flow path so as to adjust the air volume by adjusting the air volume through the upper half of the heater core.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

1 shows a center mounting type vehicle air conditioner having a two-layer airflow structure according to the present invention.

Reference numeral 30 is introduced into the air blown by the blower 60 is integrally formed at the inlet, heat exchanged in the cold / warm state by the evaporator 10 and / or the heater core 20 and then discharged to the interior of the vehicle This is an air conditioning case. The air-conditioning case 30 is preferably formed by combining left and right case members, and an inner flow passage is divided into a first flow passage 32 and a second flow passage 34 in the upper portion by the separating wall 36. have.

The evaporator 10 is installed upstream of the internal flow path of the air conditioning case 30 and the heater core 20 is installed downstream of the internal flow path of the air conditioning case 30. The partition wall 36 includes a horizontal portion 36H and an upward bend portion 36V. The horizontal portion 36H of the dividing wall 36 extends from the front of the evaporator 10 to the rear of the heater core 20 so that the internal flow path of the air conditioning case 30 may be the first flow path 32 and the second flow path ( 34), the upward bent portion 36V of the dividing wall 36 is bent upwardly in correspondence with the rear wall surface of the air conditioning case 30 from the rear end of the horizontal portion 36H to be rearward of the heater core 20. Is divided into a front flow passage 38 communicating with the first flow passage 32 and a rear flow passage 40 communicating with the first and second flow passages 32 and 34.

The outlet end of the first passage 32 (that is, the upper side of the first passage 32) has a defrost vent 42 for blowing cold / warm air toward the windshield of the vehicle and the upper half of the vehicle interior. Face vents 44 for blowing toward each side are installed, and the defrost vents 42 are controlled by their defrost doors 42d, and the face vents 44 are controlled by the facedoors 44d. Opening degree can be adjusted. In addition, a foot vent 46 is provided at the exit end of the second flow path 34 (that is, the rearmost side of the second flow path 34) for blowing cold / warm air toward the floor of the vehicle interior. The opening 46 may be adjusted by the foot door 46d. The foot door 46d also serves to selectively open and close the rear flow passage 40.

In addition, on the front surface of the upward bent portion 36V of the separation wall 36, the fourth temperature control for adjusting the opening degree of the front flow passage 38 to adjust the temperature by adjusting the air volume of the air passing through the upper half of the heater core 20 The door 54 may be further pivotally installed.

In front of the upper half of the heater core 20, the first temperature control door for adjusting the opening degree of the upper air flow passage 32a between the upper half of the heater core 20 or the upper end of the evaporator 10 and the upper end of the heater core 20 ( 48) is installed. Therefore, when the first temperature control door 48 is blocking the upper half of the heater core 20, all air passing through the upper half of the evaporator 10 passes through the upper blowing passage 32a. When the first temperature control door 48 is blocking the upper air passage 32a, all air passing through the upper half of the evaporator 10 passes through the upper half of the heater core 20 and then passes through the front passage 38. It flows into the flow path 32. When the first temperature control door 48 is turned to the neutral position, part of the air passing through the upper half of the evaporator 10 flows directly to the first flow path 32 through the upper air flow passage 32a and the rest of the heater core. After passing through the upper half of the 20, it flows to the first flow path 32 via the front flow path 38.

In addition, a second temperature control for selectively opening and closing the lower air passage 34a between the lower half front of the heater core 20 or the lower half of the heater core 20 or between the lower end of the evaporator 10 and the lower end of the heater core 20 in front of the heater core 20. The door 50 is installed. Therefore, when the second temperature control door 50 is blocking the lower half of the heater core 20, all the air passing through the lower half of the evaporator 10 passes through the lower blowing passage 34a. When the second temperature control door 50 blocks the lower air passage 34a, all air passing through the lower half of the evaporator 10 passes through the lower half of the heater core 20, and then the second passage 34 and the rear passage. Flow toward the boundary with (40). When the second temperature control door 50 is turned to the neutral position, part of the air passing through the lower half of the evaporator 10 immediately flows through the lower air passage 34a and flows through the second flow path 34, and the rest of the heaters. After passing through the lower half of the core 20 flows toward the boundary between the second channel 34 and the rear channel 40.

Further, a third temperature control door 52 for selectively opening and closing the lower half of the heater core 20 or the second passage 34 is provided at the rear of the lower half of the heater core 20. Therefore, when the third temperature control door 52 is blocking the lower half of the heater core 20, all air passing through the lower half of the evaporator 10 flows into the second flow path 34 and the second flow path 34 and the second flow path 34. It flows toward the boundary with the rear flow path 40. When the third temperature control door 52 blocks the second flow passage 34, all air passing through the lower half of the evaporator 10 passes through the heater core 20 and the second flow passage 34 and the rear flow passage 40. Flow toward the boundary of the

According to the present invention, as shown in Figs. 1 to 3, the blower 60, which is integrally formed at the inlet of the air conditioning case 30 and constitutes the center mounting type air conditioner, has left and right scroll portions 62L, It has a scroll case 62 partitioned by 62R). As shown in Figures 2 and 3, the discharge port 63L of the left scroll portion 62L is bent to the rear lower portion is connected to the inlet of the air conditioning case 30 to blow air toward the second flow channel (34) The discharge port 63R of the right scroll portion 62R is bent upwardly to the rear and connected to the inlet of the air conditioning case 30 to blow air toward the first flow path 32. That is, the discharge ports 63L and 63R of the left and right scroll portions 62L and 62R are in a state where their ends overlap the bottom and the top. On the contrary, the discharge port 63L of the left scroll part 62L is connected to the inlet of the air conditioning case 30 to blow air toward the first flow path 32 and the discharge port 63R of the right scroll part 62R is connected to the second. It may be made to be connected to the inlet of the air conditioning case 30 to blow air toward the flow path (34).

The left and right blowers 65L and 65R are arranged in turn on the left and right scroll parts 62L and 62R, and the left and right blowers 65L and 65R are supported between the left and right scroll parts 62L and 62R. It rotates together by the motor 67 which becomes. The left intake duct 69L and the right intake duct 69R are provided in order on the left and right sides of the scroll case 62, that is, the right side of the left and right scroll portions 62R of the left scroll portion 62L. Each intake duct 69L, 69R has an air intake 71 and an outside air intake 73 whose opening degree is controlled by the switching door 75, respectively.

Reference numeral 80 denotes a condensate outlet for discharging condensed water generated by condensation of moisture contained in air flowing through the internal flow path of the air conditioning case 30 to the outside of the air conditioning case 30.

Next, the operation of the air conditioner according to the present invention configured as described above will be described.

Air intake mode such as bet mode, outside air mode, inside / outdoor separation mode, inside / outdoor mixing mode is selected according to the heating / cooling mode according to the opening degree of the inside / outside air intake ports 71 and 73 of the left and right intake ducts 69L and 69R. do.

For example, FIG. 4 shows the airflow structure in the bet-cooling face vent mode. In this mode, the air intake ports 71 of the left and right intake ducts 69L and 69R are opened. The first, second and third temperature control doors 48, 50 and 52 all operate to block the heater core 20, and the fourth temperature control door 54 operates to block the front flow passage 38. In addition, only the face vent 44 of the vents is opened. In this mode, the bet is sucked through the inlet air inlets 71 by the rotation of the left and right blow fans 65L and 65R, and the air is blown toward the upper and lower half of the evaporator 10 through the outlets 63L and 63R. Is changed to cold while passing through the upper and lower half of the evaporator (10). The cold air passing through the upper half of the evaporator 10 flows to the first flow path 32 through the upper air flow passage 32a. In addition, the cold air passing through the lower half of the evaporator 10 faces the air flowing in the first passage 32 through the second passage 34 and the rear passage 40 through the lower air passage 34a. By discharging to the vehicle interior through the vent 44, cooling of the vehicle interior is performed.

5 shows the airflow structure in the bet-by-level mode. In this mode, the air intake ports 71 of the left and right intake ducts 69L and 69R are opened, and the first, second, third and fourth temperature regulating doors 48, 50, 52 and 54 are all placed in neutral positions. Also, the face vent 44 and the foot vent 46 of the vents are opened and the rear flow passage 40 is blocked by the foot door 46d. In this mode, all bets are blown from the blower 60, and the blower air is changed to cold while passing through the upper half and the lower half of the evaporator 10. FIG. Some of the cold air passing through the upper half of the evaporator 10 immediately flows to the first flow path 32 through the upper air passage 32a, and the remaining cold air passes through the upper half of the heater core 20 to increase in temperature than the cold air. While moving to the first passage 32 via the front passage 38 while being mixed with the air flowing through the upper air passage 32a to the first passage 32 while the interior of the vehicle through the face vent 44 Is discharged. Meanwhile, some of the cold air passing through the lower half of the evaporator 10 flows toward the foot vent 46 through the second air passage 34 through the lower air passage 34a, and the remaining cold air flows into the lower half of the heater core 20. While the temperature is higher than the cold air, the air is discharged into the vehicle interior through the foot vent 46 while being mixed with the air flowing through the second flow path 34 toward the foot vent 46. Therefore, in the automobile interior, the cooling operation of the bilevel mode in which the temperature difference of cold air is large is performed.

6 shows an air flow structure in the air-heating mix mode. In this mode, the outside air suction openings 73 of the left and right intake ducts 69L and 69R are opened, and the first temperature control door 48 operates to block the upper air passage 32a, and the second temperature control door 50 is opened. Is operated to block the lower air passage 34a, the third temperature control door 52 operates to block the second flow path 34, and the fourth temperature control door 54 opens the front flow path 38. To work. In addition, among the vents, the defrost vent 42 and the foot vent 46 are opened, and the rear flow passage 40 is blocked by the foot door 46d. In this mode, outside air is sucked through the outside air suction ports 73 as the left and right blower fans 65L and 65R are rotated, and blown toward the evaporator 10 through the discharge holes 63L and 63R. Air passing through the upper half of the evaporator 10 changes to warmth while passing through the upper half of the heater core 20, and the warmth flows into the first flow passage 32 via the front flow passage 38, while the defrost vent 42 Is discharged into the vehicle interior. In addition, the air passing through the lower half of the evaporator 10 is converted to warmth while passing through the lower half of the heater core 20 and then discharged to the interior of the vehicle through the foot vent 46, thereby heating the interior of the vehicle.

Figure 7 shows the air flow structure in the air-heating foot mode. In this mode, the outside air suction openings 73 of the left and right intake ducts 69L and 69R are opened, and the first temperature control door 48 operates to block the upper air passage 32a, and the second temperature control door 50 is opened. Is operated to block the lower air passage 34a, the third temperature control door 52 operates to block the second flow path 34, and the fourth temperature control door 54 opens the front flow path 38. To work. Also, among the vents, the defrost vent 42 and the foot vent 46 are opened, and the foot door 46d is placed in a neutral position. In this mode, outside air is sucked through the outside air suction ports 73 as the left and right blower fans 65L and 65R are rotated, and blown toward the evaporator 10 through the discharge holes 63L and 63R. The outside air passing through the upper half of the evaporator 10 changes to warmth while passing through the upper half of the heater core 20, and this warmth flows to the first passage 32 via the front passage 38 while a part of the defrost vent flows. The air is discharged to the interior of the vehicle through the 42, and the remaining warm air flows toward the foot vent 46 via the rear passage 40. On the other hand, the outside air passing through the lower half of the evaporator 10 is changed to warmth while passing through the lower half of the heater core 20 and then mixed with air flowing toward the foot vent 46 via the rear passage 40. Through 46).

8 shows the air flow structure in the air-heating defrost mode. In this mode, the outside air intake openings 73 of the left and right intake ducts 69L and 69R are opened, and the temperature control doors 48, 50, 52, and 54 operate as in the air-heating foot mode described above. In addition, only the defrost vent 42 of the vents is opened. In this mode, outside air is sucked through the outside air suction ports 73 as the left and right blower fans 65L and 65R are rotated, and blown toward the evaporator 10 through the discharge holes 63L and 63R. Outside air passing through the upper half of the evaporator 10 changes to warmth while passing through the upper half of the heater core 20, and the warmth flows to the first flow passage 32 via the front flow passage 38. In addition, the outside air passing through the lower half of the evaporator 10 changes to warmth while passing through the lower half of the heater core 20 and then flows through the front passage 38 while flowing to the first passage 32 via the rear passage 40. The air is mixed with the air flowing into the first flow path 32 and discharged into the vehicle interior through the defrost vent 42.

In addition, although not shown here, when the conversion doors 75 are placed in the neutral position, mixed air mixed with internal / external air is blown, and in the internal / external air separation mode, external air flows through the first flow path 32, and The bet flows into the flow path 34.

In the center mounting type automotive air conditioner having a two-layer air flow structure according to the present invention configured as described above, the discharge ports 63L and 63R of the left and right scroll portions 62L and 62R constituting the blower 60. It is bent up and down and connected to the inlet of the air conditioning case 30 to separate and blow air into the first flow path 32 and the second flow path 34, so that various air intake modes are provided by the center mounting type air conditioner. Cooling and heating mode can be controlled. Therefore, a wide range in which the cooling and heating modes can be selected according to the driving environment can be used to achieve comfortable driving of the vehicle.

In addition, since the two-layer air flow structure can be effectively applied to the center mounting type air conditioner, the air conditioner can be made compact.

Claims (5)

The internal flow path is divided into the first flow path and the second flow path by the dividing wall, and the air flows through the vents opened according to a predetermined cooling / heating mode among the defrost vents, the face vents, and the foot vents, respectively. It has a two-layer air flow structure comprising an air conditioning case for discharging into the room, an evaporator and a heater core which are sequentially installed on the upstream and downstream sides of the internal flow path of the air conditioning case, and a blower installed at the inlet of the air conditioning case. In the center mounting type automotive air conditioner: The blower, A scroll case which is divided into left and right scroll parts and discharge ports of the left and right scroll parts extend up and down and are connected to the inlet of the first channel and the inlet of the second channel; Left and right intake ducts installed at left and right sides of the scroll case and having an air intake port and an outside air intake port each of which is opened by a switching door to suck air toward the left and right scroll parts; Left and right air blowing fans disposed on the left and right scroll units, and Center mounting type automotive air conditioner having a two-layer air flow structure, characterized in that it has a motor for rotating the left and right blowing fans at the same time. The method of claim 1, The dividing wall includes a horizontal portion and an upward bent portion, wherein the horizontal portion extends from the front of the evaporator to the rear of the heater core to partition the internal flow path of the air conditioning case into the first flow path at the top and the second flow path at the bottom, The upward bent portion is bent upwardly in correspondence with the rear wall surface of the air conditioning case from the rear end of the horizontal portion to partition the rear of the heater core into a front flow passage communicating with the first flow passage and a rear flow passage communicating with the first flow passage and the second flow passage. Center mounting type automotive air conditioner with a two-layer air flow structure. The method of claim 2, Foot door for opening and closing the foot vent of the door is a center mounting type automotive air conditioner having a two-layer air flow structure characterized in that the opening and closing selectively. The method of claim 2, The first temperature control door for selectively guiding the air passing through the evaporator to the first flow path or the upper half of the heater core is installed in front of the upper half of the heater core, and the air passing through the evaporator to the second flow path or heater core in front of the lower half of the heater core. A second temperature control door for selectively guiding to the lower half is installed, and a second temperature control door for opening and closing the lower half of the heater core or the second flow path is installed at the rear of the lower half of the heater core. Center mounting type automotive air conditioner with structure. The method of claim 4, wherein The front surface of the upward bent portion of the separation wall, the fourth temperature control door for adjusting the opening degree of the front flow passage to further control the temperature by adjusting the air volume of the air passing through the upper half of the heater core, characterized in that the pivot is further installed Center mounting type automotive air conditioner with two-layer air flow structure.