KR100761163B1 - 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, and an object thereof is to reduce the mounting space of the air conditioner for the vehicle.

The air conditioner according to the present invention has an air conditioner case (10) in the upper and lower air passages (11, 12) by the first separation wall (13). At the inlet side of the air conditioning case 10, a blower 40 capable of blowing air by separating or mixing the inside / outside air is provided. The blower is an upper blower chamber 42 in which the upper blower fan 45 is installed, and a lower blower chamber 43 in which the lower blower fan 46 rotates together with the upper blower fan by the same motor 47. A first intake duct 50 having a divided blower case 41 and a first inner / outer air suction opening 51 and 52 installed at an upper portion of the blower case and whose opening degree is controlled by a first switching door 53. Wow; A second intake duct 60 is installed below the blower case and has second inner / outer air suction openings 61 and 62 whose openings are controlled by the second switching door 63. The first and second intake ducts are each formed in a triangular cross-sectional structure of which the front and rear sides form an inclined surface, and the air intake openings are formed on the front inclined surface of the inclined surfaces, and the air intake openings are sequentially formed on the rear inclined surface.

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 cross-sectional view for explaining the operation of the inhalation suction mode.

3 is a cross-sectional view for explaining the operation in the outside air suction mode.

4 is a cross-sectional view for explaining the operation of the internal / external air separation suction mode.

5 is a cross-sectional view for explaining the operation in the internal / outdoor mixed suction mode.

6 is a cross-sectional view showing an example of a conventional air conditioner.

7 is a cross-sectional view showing another example of a conventional air conditioner.

<Explanation of symbols for main parts of the drawings>

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

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

14, 15, 16: vent, 20: evaporator,

30: heater core, 40: blower,

41: blower case, 42: upper ventilation chamber,

43: lower ventilation chamber, 44: second separation wall,

45: upper blowing fan, 46: lower blowing fan,                 

47: motor, 50, 60: intake duct,

51, 61: air intake, 52, 62: air intake,

53, 63: switching door

The present invention relates to a car air conditioner of a two-layer air flow structure that can be blown by separating the inside and outside air or blown, and in particular, the air conditioning device is compact to provide a mounting space of the air conditioner for the vehicle The present invention relates to a vehicle air conditioner having a two-layer air flow structure that can be reduced.

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 outdoor air intake heating mode in winter, but also the ability to simultaneously remove the frost on the automobile window, increases passenger inconvenience.

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.                         

The air conditioners of Japanese Patent Application Laid-Open Nos. 10-109520 (see FIG. 6) and 10-226219 (see FIG. 7) are representative of such two-layer air flow structures. Air intakes (101, 201), two air intakes (111, 112) (211, 212), two switching doors (121, 122) (221, 222) and two blowing fans (131, 132) (231, 232) to open and close these intakes Can be supplied separately. However, in these air conditioners, in order to be mounted in close contact with the vehicle side dash panel surface based on the outside air intake ports 101 and 201 for application as a center mounting type air conditioner, the opening surfaces and the blower cases of the outside air intake ports 101 and 201 are used. The gaps G1 and G2 of the surfaces 141 and 241 may not only occupy a large amount of mounting space of the vehicle but also increase the total volume of the air conditioner.

The present invention has been made in consideration of the above-described problems, and an object of the present invention is to reduce an installation space of an air conditioner for a vehicle by reducing the overall size of the air conditioner.

In order to achieve the above object, the present invention, the inside is divided into the upper air flow path and the lower air flow path by the first separation wall, the evaporator and the heater core are installed in turn through the front and rear of the first separation wall, On the inlet side of the air conditioning case, a defrost vent and a face vent are respectively installed at the outlet end of the upper air passage and a foot vent is installed at the outlet end of the lower air passage. In the air conditioner for a vehicle of a two-layer air flow structure provided with a blower capable of separating or mixing the air blower: The blower is in communication with the upper air flow path, the upper air chamber and the lower air ventilation fan is installed A blower case partitioned by a lower blower chamber in which a lower blower fan is connected to the flow path and rotates together with the upper blower fan by the same motor; A first intake duct installed on an upper portion of the blower case to suck air into the upper ventilation chamber, the first intake duct having a first bent suction opening and a first outside air suction opening whose opening is controlled by a first switching door; And a second intake duct installed at a lower part of the blower case to suck air into the lower ventilation chamber, and having a second intake suction port and a second outside air suction opening whose opening is controlled by a second switching door. It is done.

According to the present invention, each of the first intake duct and the second intake duct is formed in a triangular cross-sectional structure, each of which forms an inclined surface in the front and rear, and inlet air inlets are formed in the front inclined surface of the inclined surfaces, and intake air inlets are formed in the rear inclined surface. It is desirable to be.

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 air conditioner to the vehicle so that the first outside air intake and the second outside air intake of the blower are placed in the engine room through the dash panel. When installed, only the distance between the line connecting the two vertices of the first intake duct and the second intake duct and the extension surface of the front end of the blower case is protruded toward the engine room, thereby greatly reducing the installation space of the air conditioner for the vehicle. . In addition, the size of the air conditioner can be made compact.                     

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 ( At the rear of 13), the heater core 30 is provided at a predetermined interval from the rear wall of the air conditioner case 10. Further, the rear side of the heater core 30 is a front air passage 11a and a lower air passage communicating with the upper air passage 11 by a guide wall 11c extending upward from the end of the first separation wall 13. It is divided into a rear air flow passage 11b communicating with 12).

A first temperature control door 31 is rotatably installed on the upper air flow passage 11 side of the heater core 30 in front of the heater core 30, and the first temperature control door 31 is blown to the heater core 30. It is to block the path or to block the air blowing path above the heater core 30. Therefore, when the first temperature control door 31 operates to block the air blower path toward the heater core 30, the air blower passage in the upper air flow path 11 is opened because the air blower passage in the upper part of the heater core 30 opens. Without passing through 30, all flow in the air blower path toward the upper portion of the heater core 30. In addition, when the first temperature control door 31 operates to block the air blower path on the upper side of the heater core 30, the air blower passage in the heater core 30 is opened, so that the blower air introduced into the upper air flow path 11 is the heater core. 30 does not flow to the upper side, all flows through the heater core 30 to the rear of the heater core 30. When the first 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 ( Go through 30).

In addition, a second temperature control door 32 is rotatably installed on the lower air passage 12 side of the front of the heater core 30, and the second temperature control door 32 is the heater core 30. It is designed to block the side blowing path or the lower side of the heater core 30. Therefore, when the second temperature control door 32 operates to block the blowing path toward the heater core 30, the air introduced into the lower air passage 12 does not pass through the heater core 30, but all of the lower portion of the heater core 30 is lowered. Flow to the side. In addition, when the second temperature control door 32 operates to block the air blowing path at 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 second 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. It flows to the lower blower path

In addition, a third temperature regulating door 33 is rotatably installed at a lower air flow path 12 side of the rear of the heater core 30, and the third temperature regulating door 33 is a heater core 30. It is designed to block the side blowing path or the lower side of the heater core 30. Therefore, when the third temperature control door 33 operates to block the blowing path toward the heater core 30, the flow of air passing through the heater core 30 is blocked by the third temperature control door 33. In addition, when the third temperature control door 33 operates to block the air flow path at the lower side of the heater core 30, the air passing through the heater core 30 may flow toward the rear air passage 11b.

On the other hand, at the outlet end of the upper air flow path 11, the face vent which can be adjusted by the defrost vent 14 and the face door 15a which can be adjusted by the defrost door 14a. 15) are installed one after the other. At the outlet end of the lower air passage 12, a foot vent 16 whose opening degree is adjusted by the foot door 16a is provided. The foot door 16a also has a function of adjusting the opening degree of the rear air passage 11b according to its turning.

In FIG. 1, reference numeral 17a denotes a guide baffle formed at the bottom of the air conditioning case 10 for discharging condensate, and reference numeral 17b denotes a drain hole for discharging condensate to the outside.

On the other hand, according to the present invention, the inlet side of the air conditioning case 10 is provided with a blower 40 that can be blown by separating or mixing the inside / outside air into the upper air passage 11 and the lower air passage 12 have.

The blower 40 is divided into an upper blower chamber 42 in which the upper blower fan 45 is installed and a lower blower chamber 43 in which the lower blower fan 46 is installed by the second separation wall 44 horizontally installed. It has a blower case 41. The upper blowing fan 45 and the lower blowing fan 46 are rotated together by the same motor 47. In addition, the blower 40 has a first intake duct 50 installed at the upper part of the blower case 41 and a second intake duct 60 installed at the lower part of the blower case 41.

The first intake duct 50 is provided with a first internal air intake port 51 and a first outdoor air intake port 52, and the opening degree of the internal / external air intake ports 51 and 52 is provided in the first switch door 53. Is adjusted. The first intake duct 50 is preferably formed in a triangular cross-sectional structure of which both sides make an inclined surface, in this case, the first intake surface 52 is formed on the front inclined surface, the first intake surface 51 is formed on the rear inclined surface It is preferably formed.

The second intake duct 60 is formed in the same shape as the first intake duct 60 and is installed in an inverted form. That is, the second intake duct 60 is formed with a second bettor inlet 61 and a second external air inlet 62, and the opening degree of the internal / external air inlets 61, 62 is the second switching door 63. Is controlled by. The second intake air inlet 62 is formed on the front inclined surface of the second intake duct 60, and the second intake air inlet 62 is formed on the rear inclined surface.

Open air flow control of the switching door 50 with respect to the inside and outside air intake openings 48 and 49 and the upper air flow path in which the inside and outside air are separated or mixed by the guide duct 51 surrounding the blower case 41. 11) and the lower air passage 12 to be blown toward. 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.

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

2 is a view showing the operation in the intake air suction mode, in which the first switching door 53 operates to close the first outside air intake port 52, thereby allowing the upper ventilation chamber 42 and the first beating intake port 51 to operate. ) Are communicated with each other, and the second switching door 63 is operated to close the second outside air intake 62, so that the lower blower chamber 43 and the second beta intake 61 communicate with each other. Therefore, the bet sucked into the upper blower chamber 42 through the first betler suction port 51 by the rotation of the upper blower fan 45 is blown into the upper air flow path 11, and the lower blower fan 46 rotates. The bet sucked into the lower ventilation chamber 43 through the second bet suction port 61 may be blown to the lower air passage 12. The blown bet is heat-exchanged with cold or warm air passing through only the evaporator 20 or both the evaporator 20 and the heater core 30 according to the air discharge mode for the vehicle interior, and then discharged to the vehicle interior through the open vents. As a result, the heating and cooling of the vehicle is performed.

3 is a view showing the operation in the outside air suction mode, in which the first switching door 53 operates to close the first betweezer 51 so that the upper ventilation chamber 42 and the first outside air suction port 52 are closed. ) Are communicated with each other, and the second switching door 63 is operated to close the second bet suction port 61 so that the lower ventilation chamber 43 and the second outdoor air suction port 62 communicate with each other. Therefore, the outside air sucked into the upper blower chamber 42 through the first outside air suction port 52 by the rotation of the upper blower fan 45 is blown into the upper air flow path 11, and the lower blower fan 46 rotates. The outdoor air sucked into the lower blower chamber 43 through the second air suction port 62 may be blown to the lower air passage 12. The blown outside air is heat-exchanged with cold or warm air through only the evaporator 20 or both the evaporator 20 and the heater core 30 according to the air discharge mode for the vehicle interior, and then into the car interior through the open vents. By discharging, the heating and cooling of the vehicle is performed.

4 is a view showing the operation in the internal / outdoor air separation suction mode, in which the first switching door 53 operates to close the first intake port 51 so that the upper ventilation chamber 42 and the first outside air are closed. The suction port 52 communicates with each other, and the second switching door 63 operates to close the second outdoor air suction port 62, so that the lower blower chamber 43 and the second wager suction port 61 communicate with each other. Therefore, the outside air sucked into the upper blower chamber 42 through the first outside air suction port 52 by the rotation of the upper blower fan 45 is blown into the upper air flow path 11, and the lower blower fan 46 rotates. By the bet sucked into the lower blowing chamber 43 through the second bet suction port 61 may be blown to the lower air flow path (12). The blown air and the outside air are heat-exchanged with cold or warm air through only the evaporator 20 or both the evaporator 20 and the heater core 30 according to the air discharge mode for the vehicle interior, and then through the open vents. Heating and cooling of the vehicle is performed by discharging to the room. In particular, when the air discharge mode is set to heating-foot mode or heating-mix in the internal / external air separation inhalation mode, the outside air is mainly used for defrosting, and the defrosting effect can be increased. Can be raised.

5 is a view showing the operation in the mixed internal / outdoor air intake mode, in which the first switching door 53 is placed in a neutral position so that the first intake air inlet 51 and the first air intake air outlet 52 are in the upper portion. Both the ventilation chamber 42 is in communication with each other, and the second switching door 63 is also placed in a neutral position such that both the second inlet suction port 61 and the second outdoor air suction port 62 communicate with the lower ventilation chamber 43. Therefore, the inside / outside air sucked into the upper air blowing chamber 42 through the first inside / outside air suction openings 51 and 52 by the rotation of the upper blowing fan 45 is blown to the upper air passage 11, and the lower air blowing The inside / outside air sucked into the lower blower chamber 43 through the second inside / outside air suction ports 61 and 62 by the rotation of the fan 46 may be blown into the lower air passage 12. The blown inside / outside air is heat-exchanged with cold or warm air through only the evaporator 20 or both the evaporator 20 and the heater core 30 according to the air discharge mode for the vehicle interior, and then through the open vents. Heating and cooling of the vehicle is performed by discharging to the room.

Meanwhile, when the air conditioner according to the present invention is mounted on a vehicle, as illustrated in FIG. 1, the first outside air intake port 52 and the second outside air intake port 62 of the blower 40 may use the dash panel 70. The air conditioner is mounted on the vehicle so as to be placed on the engine room 80 side, and the gap between the air conditioner and the dash panel 70 is closed by the sealing member 72. Therefore, only the space G between the line L1 connecting the two vertices of the first intake duct 50 and the second intake duct 60 and the end surface extension line L2 of the blower case 41 is the engine room. Protrudes toward 80.

In the automotive air conditioner of the two-layer air flow structure according to the present invention configured as described above, a line L1 and a blower case connecting two vertices of the first intake duct 50 and the second intake duct 60. Since only the interval between the front end surface extension line L2 of 41 protrudes toward the engine room 80, the space occupied by the air conditioner projecting into the engine room 80 is reduced as compared with the prior art. Therefore, the free space of the vehicle engine room 80 increases, so that the freedom of layout of the engine room 80 may be increased.

Claims (2)

The inside is divided into an upper air passage and a lower air passage by a first separation wall, and an evaporator and a heater core are sequentially installed through the front and rear sides of the first separation wall, and the opening degree of each of the outlet ends of the upper air passage is respectively. An air blower that separates and mixes the inside and outside air and is blown to the inlet side of the air conditioning case in which the adjustable defrost vent and the face vent are installed, and the foot vent in which the opening degree is adjusted at the outlet end of the lower air passage is installed. In an air conditioner for a vehicle having a two-layer air flow structure installed: The blower, A blower case partitioned into an upper blower chamber communicating with the upper air flow passage and a lower blower chamber communicating with the upper air blower and a lower blower fan which rotates together with the upper blower fan by the same motor; A first intake duct installed on an upper portion of the blower case to suck air into the upper ventilation chamber, the first intake duct having a first bent suction opening and a first outside air suction opening whose opening is controlled by a first switching door; And, And a second intake duct installed at a lower portion of the blower case to suck air into the lower ventilation chamber, and having a second intake inlet and a second outside air intake, the opening of which is controlled by a second switching door. Automotive air conditioner with two-layer air flow structure. The method of claim 1, The first intake duct and the second intake duct are each formed in a triangular cross-section having a front and rear inclined surfaces, and outside air inlets are formed on the front inclined surfaces of the inclined surfaces, and air inlets are formed on the rear inclined surfaces in turn. Automotive air conditioner of two-layer air flow structure.

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