KR20030065688A - Blower of center mounting type airconditioner having structure of two layer air flow for vehicles - Google Patents

Abstract

PURPOSE: A blower is provided to effectively blow internal air by independently or by separating. CONSTITUTION: A scroll case(62) is connected with an inlet of an air conditioner case(30) and divided to left and right scroll portions(64L,64R). Left and right blowing fans(68L,68R) are arranged in the scroll portions and rotated simultaneously by a motor. The scroll portions are respectively divided to internal and external scroll portions by left and right baffles(72L.72R). A compartment baffle(74) connects the upper parts of the left and the right baffles. Outlets(66d1) of the internal scroll portions and outlets(66d2) of the external scroll portions are divided above and below by the compartment baffle. The outlets(66d1) are connected with an upper passage and the outlets(66d2) are connected with a lower passage. Left and right intake ducts(76L,76R) are connected with the front of the scroll case. External air inlets(78) are respectively formed in the positions of the intake ducts corresponding to the internal scroll portions. Internal air inlets are respectively formed in the positions of the intake ducts corresponding to the external scroll portions. The openings of the internal/external inlets are adjusted by each switching door(82). Thereby, heating/cooling modes are controlled by various air intake modes. Therefore, the fresh driving of a vehicle is realized.

Description

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

The present invention relates to a blower of a center mounting type automotive air conditioner having a two-layer air flow structure, and in particular, the internal and internal air of the air-conditioning case partitioned into upper and lower flow passages alone and / or outside air A blower of a center mounting type automotive air conditioner having a two-layer air flow structure capable of blowing air.

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 uniting all three units into one unit.

In any case, the above air conditioners are generally configured to blow air by employing a blower provided with an internal / external air suction 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 switch door is placed in a neutral position and internal / external air is supplied together, internal / external air is mixed in the internal flow path of the air conditioning case, so that passengers do not feel the fresh feeling of the external 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 air-conditioning apparatus of the center mounting type, it is difficult to apply the two-layer air flow structure due to the difficulty of design due to the complexity of the structure.

Accordingly, an object of the present invention is to make it possible to effectively carry out blowing and betting alone or separately with respect to the center mounting type air conditioner to which the two-layer air flow structure is applied.

1 is a cross-sectional view showing an air conditioner for a center mounting type vehicle to which a blower according to the present invention is applied.

2 is a cross-sectional view showing a blower according to the present invention for explaining the internal / external air separation mode.

Figure 3 is a schematic perspective view for explaining the structure of the discharge port of the scroll case constituting the blower according to the present invention.

4 is a cross-sectional view showing a blower according to the present invention for explaining the betting mode.

5 is a cross-sectional view illustrating a blower according to the present invention for explaining the outdoor air mode.

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

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

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

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

10 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: upper flow path,

34: lower flow path, 36: dividing wall,

42, 44, 46: vent, 62: scroll case,

64L, 64R: scroll portion, 66a: inner scroll portion,

66b: outer scroll portion, 66d1, 66d2: discharge port,

68L, 68R: blower fan, 70: motor,

72L, 72R: baffle, 74: compartment baffle,

76L, 76R: intake duct, 78: outside air intake,

80: air intake, 82: switching door

In order to achieve the above object, the present invention, the inner flow path is divided into the upper flow path and the lower flow path by the first separation wall, the incoming air flow of the defrost vent, the face vent and the foot vent respectively opened and closed by the door The upper flow path and the inlet side of the air-conditioning case is made to discharge to the interior of the vehicle through the vents open according to a predetermined cooling and heating mode, the evaporator is installed upstream of the internal flow path, the heater core is installed downstream of the internal flow path, In the blower of the center mounting type automotive air conditioner having a two-layer air flow structure which is installed to blow the inside and / or outside air into the lower flow path alone or separately: A horizontal scrolling device is connected to the inlet side of the air conditioning case. A scroll case partitioned into portions; A left and right blower fan disposed on the left and right scroll units and simultaneously rotated by a motor provided between the left and right scroll units; Left and right baffles for partitioning the left and right scroll units into an inner scroll unit and an outer scroll unit, respectively, based on the left and right blowing fans; The discharge ports of the inner scroll parts and the discharge ports of the outer scroll parts are vertically divided while connecting the upper ends of the left and right baffles so that the discharge ports of the inner scroll parts are connected to the upper flow path and the discharge ports of the outer scroll parts are connected to the lower flow path. A compartment baffle to make; And, respectively, connected to the front of the scroll case, the outside air suction openings are formed at positions corresponding to the inner scroll portions, respectively, and the air intake openings are formed at the positions corresponding to the outer scroll portion, and adjust the opening degree of the inside / outside air suction openings. It characterized in that it comprises a left and right intake duct each having a switching door to.

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 is a center mounting type vehicle air conditioner having a two-layer air flow structure in which a blower according to the present invention is shown.

Reference numeral 30 is a heat exchanged in the cold / warm state by the evaporator 10 and / or the heater core 20 by introducing the air blown by the blower 60 according to the present invention integrally configured at the inlet passage Next, the air conditioning case for discharging the vehicle interior. The air-conditioning case 30 is preferably formed by combining left and right case members, and an inner flow passage is divided into an upper flow passage 32 and a lower flow passage 34 by a separating wall 36.

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 dividing wall 36 has an upper flow path 32 and a lower flow path 34 which extend the inner flow path of the air conditioning case 30 by a horizontal portion 36H extending from the front of the evaporator 10 to the rear branch of the heater core 20. The front channel 38 and the upper / lower flow passages through which the rear side of the heater core 20 communicates with the upper flow passage 32 by the vertical portion 36V extending upward from the rear end of the horizontal portion 36H. It is divided into the rear flow path 40 which communicates with (32,34).

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

First temperature control door 48 for selectively opening and closing the upper passage 32 of the upper half of the heater core 20 or the upper passage 32 between the evaporator 10 and the heater core 20 in front of the upper half of the heater core 20. ) Is installed. Therefore, when the first temperature control door 48 is blocking the upper half of the heater core 20, the air flows into the upper passage 32 and the air passing through the evaporator 10 flows into the upper passage 32 and the heater core ( 20) do not go through. When the first temperature control door 48 blocks the upper passage 32 between the evaporator 10 and the heater core 20, all the air flowing into the upper passage 32 and passing through the evaporator 10 passes through the heater core. After passing through (20) it flows to the upper flow path (32) via the front flow path (38). When the first temperature control door 48 is rotated to the neutral position, some of the air flowing into the upper flow path 32 and passing through the evaporator 10 flows directly to the upper flow path 32 and the rest of the heater core 20. After passing through and flows to the upper flow path (32) via the front flow path (38).

Further, a second temperature control door for selectively opening and closing the lower passage 34 of the lower half of the heater core 20 or the lower passage 34 between the evaporator 10 and the heater core 20 in front of the lower half of the heater core 20. 50 is installed. Therefore, when the second temperature control door 50 is blocking the lower half of the heater core 20, the air flows into the lower passage 34 and the air passing through the evaporator 10 flows into the lower passage 34 and the heater core ( 20) do not go through. When the second temperature control door 50 blocks the lower passage 34 between the evaporator 10 and the heater core 20, all the air flowing into the lower passage 34 and passing through the evaporator 10 passes through the heater core. Go through 20. When the second temperature control door 50 is placed in the neutral position, some of the air flowing into the lower flow path 34 and passing through the evaporator 10 flows directly to the lower flow path 34 and the rest of the heater core 20 is moved. Rough

Further, a third temperature control door 52 for selectively opening and closing the rear or lower flow passage 34 of the heater core 20 is installed at the rear of the lower half of the heater core 20. Therefore, when the third temperature control door 52 is blocking the rear half of the heater core 20, the air flowing into the lower passage 34 and passing through the evaporator 10 does not pass through the heater core 20, but the lower passage ( Flow 34). When the third temperature control door 52 blocks the lower flow path 34, all the air flowing into the lower flow path 34 and passing through the evaporator 10 passes through the heater core 20.

According to the present invention, as shown in Figs. 1 and 2, the air blower 60 according to the present invention, which is integrally united at the inlet of the air conditioning case 30, constitutes a center mounting type air conditioner, It has a scroll case 62 connected to the inlet of the case 30 and partitioned into left and right scroll portions 64L and 64R. The left and right blower fans 68L and the right blower fan 68R are disposed in this order in the left and right scroll units 64L and 64R, and the left and right blower fans 68L and 68R are supported between the left and right scroll units 64L and 64R. The motor 70 is configured to rotate together.

The left and right scroll portions 64L and 64R are divided into the inner scroll portion 66a and the outer scroll portion 66b by the left and right baffles 72L and 72R, respectively, based on the left and right blower fans 68L and 68R. In addition, as shown in FIG. 3, the discharge holes 66d1 of the inner scroll parts 66a and the discharge ports 66 of the outer scroll parts 66b are formed by the partition baffles 74 connecting the upper ends of the left and right baffles 72L and 72R. 66d2 are divided up and down, and the discharge port 66d1 of the inner scroll parts 66a is connected to the upper flow path 32, and the discharge ports 66d2 of the outer scroll parts 66b are connected to the lower flow path 34. . Preferably, the rear end of the discharge port 66d1 of the inner scroll parts 66a is enlarged. Further, the left and right baffles 72L and 72R extend to the rear side while drawing a curved path, and the rear ends of the left and right baffles 72L and 72R are connected to each other adjacent to the rear ends of the discharge ports 66d2 of the outer scroll portions 66b. As a result, the rear ends of the discharge ports 66d2 of the outer scroll parts 66b are preferably communicated with each other. In this case, the discharge ends of the discharge ports 66d1 and 66d2 of the inner / outer scroll parts 66a and 66b are connected to each other. It may be formed to have the same cross-sectional area.

The left and right intake ducts 76L and 76R are connected to the front of the scroll case 62 to correspond to the left and right scroll portions 64L and 64R. Outside air suction ports 78 are formed at positions corresponding to the inner scroll portions 66a of the intake ducts 76L and 76R, respectively, and correspond to the outer scroll portions 66b of the intake ducts 76L and 76R. Intake air inlets 80 are formed in the position. And, in each of the intake ducts 76L and 76R, the switching doors 82 for controlling the opening degree thereof are sequentially installed at positions between the internal and external air intake openings 80 and 78.

Therefore, when the switching doors 82 are blocking the outside air inlets 78, bets are sucked into the left and right scroll portions 64L and 64R through the air intake ports 80 by the rotation of the blower fans 68L and 68R. Therefore, the bet may be blown to the upper and lower flow paths 32 and 34 of the air conditioning case 30. When the switching doors 82 are blocking the intake air inlets 80, the outside air is sucked into the left and right scroll portions 64L and 64R through the outside air intakes 78 by the rotation of the blower fans 68L and 68R. Outside air may be blown through the upper and lower flow paths 32 and 34 of the case 30. On the other hand, when the switching doors 82 turn to a position corresponding to the front ends of the left and right baffles 72L and 72R, that is, the neutral position, the bet through the intake air inlets 80 by the rotation of the blowing fans 68L and 68R. Is sucked into the outer scroll parts 66b and outside air may be blown into the upper flow path 32 of the air conditioning case 30 as the outside air is sucked into the inner scroll parts 66a through the outside air suction openings 78. In addition, a bet may be blown in the lower flow path 34 of the air conditioning case 30.

Reference numeral 54 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.

According to the opening degree of the inside / outside air intake openings 80 and 78 according to the turning position of the switching doors 82, the air intake mode such as the inside mode, the outside air mode, and the inside / outside air separation mode is selected according to the cooling and heating mode.

For example, FIG. 6 shows the airflow structure in the bet-cooling mode. In this mode, as shown in FIG. 4, the air intake openings 80 are opened, and the first, second, and third temperature control doors 48, 50, and 52 operate to block the heater core 20. In addition, only the face vent 44 of the vents is opened. Therefore, when the left and right blow fans 68L and 68R rotate, the bet is sucked into the left and right scroll portions 64L and 64R through the bet suction ports 80 and blown to the upper flow path 32 and the lower flow path 34. This blowing air is changed to cold while passing through the evaporator (10). The cold air flowing into the upper flow passage 32 is discharged directly into the vehicle interior through the face vent 44, and the cold air flowing into the lower flow passage 34 flows into the upper flow passage 32 through the rear flow passage 40. Next, by being discharged to the vehicle interior through the face vent 44, the cooling of the vehicle interior is performed.

Fig. 7 shows the air flow structure in the bet-by-level mode. In this mode, as shown in FIG. 4, the intake air inlets 80 are opened, and the first, second and third temperature control doors 48, 50, and 52 are all placed in a neutral position. 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. Therefore, when the left and right blow fans 68L and 68R rotate, the bet is sucked into the left and right scroll portions 64L and 64R through the bet suction ports 80 and blown to the upper flow path 32 and the lower flow path 34. This blowing air is changed to cold while passing through the evaporator (10). Some of the cold air flowing into the upper passage 32 flows directly into the upper passage 32 and is discharged to the interior of the vehicle through the face vent 44, and the remaining cold air passes through the heater core 20 and has a temperature higher than that of the cold air. As it rises, it flows to the upper flow path 32 via the front flow path 38 and is then discharged into the vehicle interior through the face vent 44. On the other hand, some of the cold air flowing into the lower flow path 34 is discharged directly to the vehicle interior through the foot vent 46 via the rear flow path 40, the remaining cold air is passed through the heater core 20 than the cold air As the temperature is raised, it is discharged into the vehicle interior through 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.

8 shows the air flow structure in the air-heating mix mode. In this mode, as shown in FIG. 5, the outside air intake openings 78 are opened, and the first temperature control door 48 operates to block the upper flow passage 32, and the second temperature control door 50 and the third temperature control door 48 are opened. The temperature control door 52 operates to block the lower passage 34. 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. Therefore, when the left and right blow fans 68L and 68R rotate, the outside air is sucked into the left and right scroll portions 64L and 64R through the outside air suction ports 78 and blown to the upper flow passage 32 and the lower flow passage 34. The air blown into the upper flow path 32 passes through the evaporator 10 and then changes to warmth through the heater core 20. The warm air flows through the front flow path 38 into the upper flow path 32 and then de The air is discharged to the interior of the vehicle through the frost vent 42, the air blown into the lower flow path 34 is changed to warmth through the heater core 20 after passing through the evaporator 10, and then through the foot vent 46 By discharging to the interior, the heating operation of the vehicle interior is performed.

9 shows the air flow structure in the air-heating foot mode. In this mode, as shown in FIG. 5, the outside air intake openings 78 are opened, the first temperature control door 48 operates to block the upper flow path 32, and the second temperature control door 50 and the third temperature control door 48 are opened. The temperature control door 52 operates to block the lower passage 34. 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. Therefore, when the left and right blow fans 68L and 68R rotate, the outside air is sucked into the left and right scroll portions 64L and 64R through the outside air suction ports 78 and blown to the upper flow path 32 and the lower flow path 34. The air blown into the upper flow passage 32 passes through the evaporator 10 and then changes to warmth through the heater core 20, which flows through the front flow passage 38 to the upper flow passage 32 and then partially. Is discharged to the vehicle interior through the defrost vent 42, the remaining warmth is discharged to the vehicle interior through the foot vent 46 via the rear flow passage (40). The air blown into the lower passage 34 is changed to warmth through the heater core 20 after passing through the evaporator 10 and then discharged into the vehicle interior through the foot vent 46.

10 shows the air flow structure in the air-heating defrost mode. In this mode, as shown in FIG. 5, the outside air intake openings 78 are opened, the first temperature control door 48 operates to block the upper flow path 32, and the second temperature control door 50 and the third temperature control door 48 are opened. The temperature control door 52 operates to block the lower passage 34. In addition, only the defrost vent 42 of the vents is opened. Therefore, when the left and right blow fans 68L and 68R rotate, the outside air is sucked into the left and right scroll portions 64L and 64R through the outside air suction ports 78 and blown to the upper flow passage 32 and the lower flow passage 34. The air blown into the upper flow path 32 passes through the evaporator 10 and then changes to warmth through the heater core 20. The warm air flows through the front flow path 38 into the upper flow path 32 and then de It is discharged to the vehicle interior through the frost vent (42). The air blown into the lower passage 34 is changed to warmth through the heater core 20 after passing through the evaporator 10 and then flows to the upper passage 32 through the rear passage 40 to defrost vent 42. Is discharged into the vehicle interior.

In addition, as shown in FIG. 2, when the internal / external air separation mode in which the switching doors 82 are placed in the neutral position in the heating mode is selected, the air inlets 80 are rotated by the left and right blower fans 68L and 68R. The outside air is sucked into the outer scroll parts 66b and blown into the lower flow path 34 of the air conditioning case 30, and the outside air is sucked into the inner scroll parts 66a through the outside air suction openings 78 so that the air conditioner case 30 Since the air is blown into the upper flow path 32 of), the frost of the windshield of the vehicle is removed by, for example, dry outside air discharged through the defrost vent 40, and heating is performed by the bet discharged through the foot vent. Frost on the back glass can be removed at the same time. Therefore, it is possible to improve the defrosting effect by the outside air and the heating performance by the bet.

In the blower of the center mounting type automotive air conditioner having the two-layer air flow structure according to the present invention configured as described above, the discharge port 66d1 of the inner scroll parts 66a and the discharge port of the outer scroll parts 66b. By placing the upper and lower 66d2) to be connected to the upper passage 32 and the lower passage 34 of the air conditioning case 30, it is possible to control the cooling and heating mode in a variety of air suction mode. 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, when the internal / outdoor air separation mode is selected in the heating mode, the frost of the vehicle windshield is removed by the dry outside air discharged through the defrost vent 40, and heated by the internal air discharged through the foot vent 46. In addition, since the frost of the rear windshield of the car is removed at the same time, it is possible to improve the defrosting effect and improve the heating performance.

In addition, since the two-layer air flow structure can be effectively applied to the center mounting air conditioner by the blower of the present invention, it is possible to compact the air conditioner according to the improvement of the cooling and heating efficiency.

Claims (3)

The interior flow path is partitioned into the upper flow path and the lower flow flow path by the dividing wall, and the inside of the automobile through the vents opened according to a predetermined cooling / heating mode among the defrost vent, the face vent, and the foot vent, respectively, in which the blowing air is opened and closed by the door. Inlet and / or outside air in the upper and lower flow passages alone or separated at an inlet side of an air conditioning case in which an evaporator is installed upstream of the inner flow passage and a heater core is installed downstream of the inner flow passage. In the blower of the center mounting type automotive air conditioner having a two-layer air flow structure installed to blow air by: A scroll case connected to an inlet side of the air conditioning case and partitioned into a left and right scroll unit; A left and right blower fan disposed on the left and right scroll units and simultaneously rotated by a motor provided between the left and right scroll units; Left and right baffles for partitioning the left and right scroll units into an inner scroll unit and an outer scroll unit, respectively, based on the left and right blowing fans; The discharge ports of the inner scroll parts and the discharge ports of the outer scroll parts are vertically divided while connecting the upper ends of the left and right baffles so that the discharge ports of the inner scroll parts are connected to the upper flow path and the discharge ports of the outer scroll parts are connected to the lower flow path. A compartment baffle to allow; The outside air suction openings are respectively formed at positions corresponding to the front of the scroll case, and corresponding to the inner scroll portions, and the inside air suction openings are formed at the positions corresponding to the outer scroll portions, respectively. A blower of a center mounting type automotive air conditioner having a two-layer air flow structure, characterized in that it comprises a left and right intake ducts each having a switching door. The method of claim 1, Discharge openings of the inner scroll portions are enlarged, and rear ends of the left and right baffles are connected to each other adjacent to the rear ends of the discharge openings of the outer scroll portions, so that the rear ends of the discharge ports of the outer scroll portions communicate with each other. Blower of center mounting type automotive air conditioner with floor air flow structure. The method of claim 2, Blower of the center mounting type automotive air conditioner having a two-layer air flow structure, characterized in that the discharge ends of the discharge ports of the inner / outer scroll portion have the same cross-sectional area.