KR100745078B1 - Airconditioner having structure of two layer air flow for vehicles - Google Patents

Abstract

The present invention relates to a vehicle air conditioner of a two-layer air flow structure, to minimize the air flow loss in the separate air / outdoor air blowing mode to improve the defrosting performance and heating performance of the vehicle window glass by not mixing For the purpose of

In the air conditioner of the present invention, a blower 40 capable of separating and blowing air from inside and outside is installed at an inlet, and the inside is divided into upper and lower air passages 11 and 12 by a first separation wall 13. It has an air conditioning case 10. The evaporator 20 and the heater core 30 are sequentially installed before and after the first separation wall. An upper temperature control door 31 and a lower temperature control door 32 are installed in front of the heater core. The defrost vent 14 and the face vent 15 are provided at the outlet end of the upper air passage. On the rear side of the heater core, a foot vent 16 is installed in which upper and lower air flow paths pass through each other and the rear branch branches into front and rear branch vents 16f and 16r. A combination door 18 is further provided having a front foot door 18f for controlling the opening of the front branch vent and an opening portion of the front branch vent and a rear foot door 18r for controlling the opening of the rear branch vent. .

Air Conditioning, Air Conditioning, Air Conditioning, Air Conditioning, Air Conditioning, Air Conditioning, Heating

Description

Air conditioner for automobile with two-layer air flow structure {AIRCONDITIONER HAVING STRUCTURE OF TWO LAYER AIR FLOW FOR VEHICLES}

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

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

3 is a view for explaining a cooling mode when the inhalation suction.

4 is a view for explaining a bi-level mode during the inhalation.

5 is a view for explaining the heating-foot mode when the outside air suction.

FIG. 6 is a view for explaining a heating-mix mode when inhaling outside air.

7 is a view for explaining a heating-defrost mode when inhaling outside air.

8 is a view for explaining the heating-foot mode when the internal and external air separation suction.

FIG. 9 is a view for explaining a heating-mix mode when inhaling the inside and outside air.

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

10: air conditioning case, 11: upper air flow path,

12: lower air flow path, 13: first separation wall,

14: defrost vent, 15: face vent,

16: foot vent, 16f: forward branch vent,                 

16r; Rear branch vent, 18: combination door,

18f: front foot door, 18r: rear foot door,

17b: compartment baffle, 17d: lower guide rib,

17u: upper guide rib, 20: evaporator,

30: heater core, 31: upper temperature control door,

32: lower temperature control door, 40: blower

The present invention relates to a car air conditioner of a two-layer air flow structure that can be blown by separating the inside / outside air, or mixed by blowing, in particular, the air discharge to the interior of the vehicle through the foot vent in the separate air blowing mode The present invention relates to a vehicle air conditioner of a two-layer air flow structure that can minimize airflow loss by improving control of airflow and improve the defrosting performance and heating performance of the vehicle window glass.

In the automotive air conditioner of the first-floor air flow structure, which is a general automotive air conditioner that blows air by using one blower fan, when the outside air is supplied to the room through the outside air intake at the time of its operation, the load of the compressor is increased. In case of a lot of loss and only circulation of the bet through the intake port, the air inside the car is contaminated, causing inconvenience to the occupants. In particular, not only the lack of rapid heating performance at the beginning of the winter air intake heating mode in winter, but also the ability to simultaneously remove the frost on the automobile window, increases the inconvenience of the occupant.

In order to solve these problems, two-layer air flow structure air conditioners that can supply the interior of an automobile by separating or mixing the inside and the outside by employing two blowers have been proposed.

One of the two air conditioners of the two-layer air flow structure is the air conditioner of Japanese Patent Application Laid-Open No. 10-109520. In the case of this air conditioner, two doors serving as a partition wall are adopted. The outside air can be separated and supplied, and two foot vents are provided. However, in this air conditioner, the internal / external air is mixed with each other after passing through the heater core, and the humidity of the internal air is mixed, so the defrosting effect of the rear window pane is particularly effective due to the bet in the direction of the rear foot vent. Degrades.

The present invention has been made in consideration of the above-mentioned conventional problems, and minimizes the loss of air volume in the air blowing mode of internal / external air and prevents the internal / external air from being mixed, thereby improving the defrosting performance and heating performance of the vehicle window glass. An object of the present invention is to provide an air conditioner for an automobile having an air flow structure.

In order to achieve the above object, the air conditioner according to the present invention, the upper air flow path and the lower part by the first separation wall inside the air conditioning case is disposed on the inlet side of the blower capable of blowing the air inside / outside Partitioned by air flow paths; An evaporator and a heater core are sequentially installed before and after the first dividing wall, and an upper temperature control door is located at an upper air flow path toward the front of the heater core, and a lower temperature control door is located at a lower air flow path at the front of the heater core. Are each pivotally installed; On the outlet end of the upper air flow path, a defrost vent and a face vent, in which opening degrees can be adjusted, are sequentially installed; On the rear side of the heater core there is provided a foot vent in communication with the upper air passage and the lower air passage, and the rear branch is branched into the front branch vent and the rear branch vent; The foot vent is opened by a combination door having a communication portion between the upper air passage and the lower air passage and a front foot door for controlling the opening degree of the front branch vent, and a rear foot door in conjunction with the rear foot door to control the opening degree of the rear branch vent. Is characterized in that it is to be controlled.

The foot vent includes an upper guide rib extending downward from the rear side wall of the upper air flow path toward the upper half of the heater core, and a lower guide extending upward from the bottom of the lower air flow path to the lower half of the heater core. It can be formed by a rib.

The front branch vent and the rear branch vent may be formed by a partition baffle extending downward from the center of the foot vent between the lower guide rib and the rear wall of the air conditioning case.

According to the air conditioner for a vehicle having a two-layer air flow structure according to the present invention configured as described above, the front foot in the internal / outdoor air separation blow mode in which the outside air is blown to the upper air flow passage and the air is blown to the lower air flow passage. The door blocks the upper air passage and the lower air passage so as not to communicate with each other, and controls the lower air passage and the front branch vent to communicate with each other, and the rear foot door is controlled to allow the upper air passage and the rear branch vent to communicate with each other. In this state, the outside air blown into the upper air flow path passes through the heater core, and part of the outside air is discharged through the defrost vent to defrost the windshield and the front side glass of the vehicle, and the remaining outside air is discharged through the rear branch vent. It is used for defrosting automobile rear windshield and rear side windshield. On the other hand, the bet blown into the lower air flow path is discharged toward the front seat of the vehicle after passing through the heater core is used for heating the interior of the vehicle. Therefore, since the internal / external air is not mixed with each other after passing through the heater core during the separate flow of the internal / external air, there is no loss of air volume of the internal / external air and the humidity change of the internal / external air does not occur, so the defrosting effect of the vehicle window glass is excellent. .

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.

Reference numeral 10 shown in Figure 1 is an air conditioning case constituting the air conditioner according to the present invention, the upper air passage 11 and the lower by the first separation wall 13, the inside of which is installed in a substantially horizontal direction The air passage 12 is partitioned. In addition, an evaporator 20 is installed on the front of the first separation wall 13 (that is, the inlet side through which air is introduced) while blocking the inlet of the air conditioning case 10, and the first separation wall 13. The heater core 30 is provided at the rear of 13 at a predetermined interval from the rear wall of the air conditioner case 10. As the heater core 30 is installed while occupying approximately the center portion of the air conditioning case 10, the rear side of the heater core 30 communicates with the upper air passage 11 and the lower air passage 12. have.

On the other hand, as shown in Figure 1 and 2, the front of the inlet of the air conditioning case 10 can be blown by separating or mixing the inside / outside air to the upper air passage 11 and the lower air passage 12 The blower 40 is provided. The blower 40 is divided into an upper blower chamber 42 in which the upper blower fan 44 is installed and a lower blower chamber 43 in which the lower blower fan 45 is installed by the second separation wall 44 installed horizontally. It has a scroll case 41, the upper blowing fan 44 and the lower blowing fan 45 is rotated together by the same motor (46). In addition, the blower 40 adjusts the opening degree of the switching door 50 to the internal / external air suction openings 48 and 49 formed in the intake duct 47 installed on the upper portion of the scroll case 41 and the scroll case 41. In order to blow air toward the upper air passage 11 and the lower air passage 12 in a state in which the inside / outside air is separated or mixed by the guide duct 51 surrounding the (). That is, the air may be blown from the upper blowing chamber 42 toward the upper air passage 11, and the air may be blown from the lower blowing chamber 43 toward the lower air passage 12. In order to perform the internal / external air separation suction mode, when the switch door 50 is rotated to a predetermined position at a predetermined position on the scroll case 41, the upper air vent chamber 42 is connected to the external air inlet by contacting the end thereof. Only the 49 passes through, and the lower blower chamber 43 is provided with partition means 51 for passing only the air intake opening 48. The partitioning means 51 is preferably formed in the form of a protrusion as shown in FIG. 2, but as an alternative, although not shown here, the partition means 51 may be formed in the form of a concave inlet which may partition the blowing passage by inserting an end of the conversion door 50. have.

According to the present invention, an upper temperature control door 31 is pivotally installed on the upper air passage 11 side of the front of the heater core 30, and the upper temperature control door 31 is a heater core 30. ) To block the blowing path or to block the upper part of the heater core 30. Therefore, when the upper temperature control door 31 operates to block the air blower path toward the heater core 30, the air blower passage opened to the upper air core 11 opens the air blower passage. 30 does not pass through all flow in the air blower path toward the upper heater core (30). In addition, when the upper temperature control door 31 operates to block the air blower path on the upper side of the heater core 30, the air blower passage on the heater core 30 is opened, so that the air blown into the upper air flow path 11 is heated by the heater core ( 30) flows to the rear of the heater core 30 through the heater core 30 and not all flow upward. When the upper temperature control door 31 is placed in the neutral position, some of the air introduced into the upper air flow passage 11 flows toward the upper portion of the heater core 30 without passing through the heater core 30 and the rest of the heater core 30. Go through).

In addition, a lower temperature control door 32 is rotatably installed on the lower air passage 12 side of the heater core 30 in front of the heater core 30, and the lower temperature control door 32 is blown to the heater core 30 side. It is to block the path or to block the air blower path below the heater core 30. Therefore, when the lower temperature control door 32 operates to block the air blower toward the heater core 30, the air introduced into the lower air flow passage 12 does not pass through the heater core 30, but all of the lower heater core 30 is lowered. Flow to the side. In addition, when the lower temperature control door 32 operates to block the air blower path toward the lower side of the heater core 30, all the air introduced into the lower air passage 12 passes through the heater core 30. When the lower temperature control door 32 is placed in the neutral position, some of the blowing air introduced into the lower air flow passage 12 passes through the heater core 30 and the remaining portion does not go through the heater core 30. Flow to the side blow path.

According to the present invention, the face can be adjusted by the defrost vent 14 and the face door (15a) which can be adjusted by the defrost door (14a) at the outlet end of the upper air passage (11). Vents 15 are provided in sequence.

In addition, the rear side of the heater core 30 through which the upper air passage 11 and the lower air passage 12 communicate with each other, the rear vent branch 16 is branched into the front branch vent 16f and the rear branch vent 16r. Is installed. That is, the foot vent 16 includes an upper guide rib 17u extending downward from the rear side wall of the upper air flow passage 11 toward the upper half of the heater core 30 and the air conditioning case. It may be formed by a lower guide rib 17d extending upward from the bottom of the lower air passage 12 toward the rear of the upper half of the heater core 30, the upper guide rib from the center of the foot vent (16) Front branch vent 16f and rear by partition baffle 17b extending downward from 17u and the center of lower guide rib 17d between lower guide rib 17d and rear wall of air conditioning case 10. It may be branched to the branch vent 16r.

The foot vent 16 is controlled by the combination door 18. That is, the combination door 18 and the front foot door (18f) for controlling the opening of the forward branch vent 16f and the communication portion between the upper air passage 11 and the lower air passage 12, and the rear branch vent in conjunction with this It has the rear foot door 18r which controls the opening degree of 16r. Therefore, if the front foot door 18f blocks the upper air passage 11 and the lower air passage 12 from communicating with each other, the upper air passage 11 communicates with the rear branch vent 16r and the lower air passage 12 communicates with the forward branch vent 16f. In addition, when the front foot door 18f operates to block the front branch vent 16f, the rear foot door 18r operates to block the rear branch vent 16r in conjunction with the upper foot passage 11 and the lower side. The air passages 12 communicate with each other and at the same time they do not communicate with the foot vent 16.

In FIG. 1, reference numeral 19b denotes a guide baffle formed at the bottom of the air conditioning case 10 for discharging condensate, and reference numeral 19d denotes a drain hole for discharging condensate to the outside.

A vehicle air conditioner of a two-layer airflow structure according to the present invention configured as described above operates as follows.

3 is a view showing a cooling mode at the time of inhaling suction, in this mode the operation of the heating system is stopped, the bet is sucked into both the upper ventilation chamber 42 and the lower ventilation chamber 43 through the evaporator 20 While being changed to cold, the air is blown to the upper air passage 11 and the lower air passage 12. In addition, the upper temperature control door 31 and the lower temperature control door 32 both operate to block the blowing path toward the heater core 30, and the combination door 18 operates to block the foot vent 16, The defrost door 14a operates to block the defrost vent 14, and the face door 15a operates to open the face vent 15. Therefore, the cold air flowing through the upper air flow passage 11 flows toward the air blower path toward the upper portion of the heater core 30 without passing through the heater core 30, and then all of the cold air is discharged into the vehicle interior through the face vent 15. Cooled. In addition, the cold air flowing through the lower air passage 12 passes through the lower air passage of the heater core 30 and the lower air passage of the heater core 30 to the upper air passage 11 without passing through the heater core 30. After the flow, all are discharged into the vehicle interior through the face vent 15 to cool the vehicle interior.

FIG. 4 is a view showing the bi-level mode at the time of inhaling suction. In this mode, both the cooling system and the heating system are operated, and both the upper and lower ventilation chambers 42 and 43 are sucked into the evaporator 20. It is changed into cold while passing through) and is blown to the upper air passage 11 and the lower air passage (12). In this case the defrost vent 14 is closed and the face vent 15 is open. In addition, the upper temperature control door 31 is placed in a neutral position so as to open both the air blower path toward the heater core 30 and the air blower upstream of the heater core 30, and the lower temperature control door 32 may be a heater core ( It operates to open the side blowing path. Further, the front foot door 18f tip of the combination door 18 is operated to be in a neutral position behind the lower half of the heater core 30. Therefore, the front branch vent 16f and the rear branch vent 16r are opened, and the rear side of the heater core 30 is in a state in which the upper air passage 11 and the lower air passage 12 are not completely blocked. In this state, some of the cold air flowing through the upper air passage 11 flows through the air blower path toward the upper portion of the heater core 30 without passing through the heater core 30, and the rest of the cold air flows through the heater core 30. . Some of this warmth is discharged into the interior of the vehicle through the face vent 15 while being mixed with cold air flowing in the upper blower path of the heater core 30, and the rest is discharged into the interior of the vehicle through the rear branch vent 16r. On the other hand, some of the cold air flowing in the lower air flow passage 12 flows to the lower air blower path through the heater core 30 without passing through the heater core 30 is discharged to the interior of the vehicle through the front branch vent (16f), the rest The temperature is increased while passing through the heater core 30. Only a small part of the warm air is discharged into the vehicle interior through the front branch vent 16f while being mixed with cold air, and most of the warm air is discharged into the vehicle interior through the rear branch vent 16r and flows to the upper air flow passage 11. Is discharged into the interior of the car while being mixed with air. Therefore, air having a different temperature is discharged in the vehicle interior.

FIG. 5 is a view illustrating a heating mode at the time of intake of outside air, and in this mode, the heating system may be operated at the same time as a cooling system in dehumidification. Blown into the upper air passage 11 and the lower air passage 12 through the (). In addition, the upper temperature control door 31 operates to block the air blower path on the upper side of the heater core 30, and the lower temperature control door 32 operates to block the air blower path on the lower side of the heater core 30. The outside air flowing through the flow passage 11 and the lower air flow passage 12 is changed to warmth through the heater core 30. In addition, the defrost door 14a is placed in the neutral position so that the defrost vent 14 is opened about halfway, and the face vent 15 is closed. In addition, the combination door 18 blocks the upper air passage 11 and the lower air passage 12 from passing through each other, and operates to open the front branch vent 16f and the rear branch vent 16r. Therefore, the warm air passing through the heater core 30 in the upper air passage 11 is discharged into the vehicle interior through the rear branch vent 16r and the defrost vent 14, and the heater core 30 in the lower air passage 12. The warmth is passed through the front branch vent (16f) to the vehicle interior.

FIG. 6 is a view showing a heating mode at the intake of outside air. In this mode, the rest of the operations are the same as those in FIG. 5 except that the defrost vent 14 is completely opened.

FIG. 7 is a view showing a heating-defrost mode in the intake of outside air, in which the defrost vent 14 is fully opened, and the combination door 18 operates to block the foot vent 16. The remaining operations are the same as in FIG. 5 except that the warm air passing through the heater core 30 in the 11 and the lower air passage 12 is all discharged to the vehicle interior through the defrost vent 14.

8 is a view showing the heating-foot mode at the time of inhalation and separation of the inside and outside air, in this mode may be operated simultaneously with the cooling system in the dehumidification, the outside air flows into the upper ventilation chamber 42 through the evaporator 20 The upper air passage 11 is blown, and the inside air is sucked into the lower blower chamber 43 and blown through the evaporator 20 to the lower air passage 12. In addition, the upper temperature control door 31 operates to block the air blower path on the upper side of the heater core 30, and the lower temperature control door 32 operates to block the air blower path on the lower side of the heater core 30. The outside air flowing through the flow passage 11 and the bet flowing through the lower air flow passage 12 are changed to warmth through the heater core 30. In addition, the defrost door 14a is placed in the neutral position so that the defrost vent 14 is opened about halfway, and the face vent 15 is closed. In addition, the combination door 18 blocks the upper air passage 11 and the lower air passage 12 from passing through each other, and operates to open the front branch vent 16f and the rear branch vent 16r. Therefore, the warm air (outside air) passing through the heater core 30 in the upper air passage 11 is discharged into the vehicle interior through the rear branch vent 16r and the defrost vent 14, and the heater in the lower air passage 12. All of the warmth (betting) passing through the core 30 is discharged into the vehicle interior through the front branch vent 16f. In this mode, as described above, a part of the outdoor air is discharged through the defrost vent 14 in a state where the internal / external air passes through the heater core 30 and is not mixed with each other, so that the front windshield and the front seat windshield It is used for defrosting, the remaining outside air is discharged through the rear branch vent 16r, and used for defrosting the rear windshield and the rear seat side glass, and the bet is exhausted through the front foot vent and used for heating. Therefore, there is no loss of air volume of the internal / external air and no change in humidity of the internal / external air can increase not only the defrosting performance but also the heating performance.

FIG. 9 is a view showing a heating-mix mode in the separation between the inside and the outside air, except that the defrost vent 14 is fully opened, and the rest of the operations are the same as those in FIG. 8 described above. Description is omitted.

In the automotive air conditioner of the two-layer air flow structure according to the present invention configured as described above, a part of the outside air in the heating-foot mode or the heating-mix mode in the internal / external air separation suction mode is a defrost vent ( 14) It is discharged through the defrost of the windshield and front side glass of the car, and the rest of the outside air is discharged through the rear branch vent (16r) is used to defrost the rear windshield and the rear seat glass of the car, so defrosting performance is improved. Is improved. In addition, the internal air is discharged through the front foot vent in a state that is completely separated from the external air and used for heating, thereby improving heating performance, and there is no loss of air volume between the internal and external air, and no change in humidity of the internal / external air results in further defrosting performance. It can increase.

Claims (3)

An interior of an air conditioning case in which a blower capable of separating or mixing air inside and outside and blowing the air is disposed at an inlet side, and partitioned into an upper air passage and a lower air passage by a first separation wall; An evaporator and a heater core are sequentially installed before and after the first dividing wall, and an upper temperature control door is located at an upper air flow path toward the front of the heater core, and a lower temperature control door is located at a lower air flow path at the front of the heater core. Are each pivotally installed; On the outlet end of the upper air flow path, a defrost vent and a face vent, in which opening degrees can be adjusted, are sequentially installed; On the rear side of the heater core there is provided a foot vent in communication with the upper air passage and the lower air passage, and the rear branch is branched into the front branch vent and the rear branch vent; The foot vent is opened by a combination door having a communication portion between the upper air passage and the lower air passage and a front foot door for controlling the opening degree of the front branch vent, and a rear foot door for controlling the opening degree of the rear branch vent in conjunction with the opening. Automotive air conditioning apparatus of a two-layer air flow structure, characterized in that the control. The method of claim 1, The foot vent includes an upper guide rib extending downward from the rear side wall of the upper air flow path toward the upper half of the heater core, and a lower guide extending upward from the bottom of the lower air flow path to the lower half of the heater core. An air conditioner for automobiles having a two-layer air flow structure, which is formed by a rib. The method of claim 2, The front branch vent and the rear branch vent are formed by a compartment baffle extending downward from the center of the foot vent between the lower guide rib and the rear wall of the air conditioning case. Air conditioning system.

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