JP4286244B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner that includes a cooling unit and a heating unit and is capable of adjusting a temperature in a vehicle compartment via the cooling unit and the heating unit.

  A vehicle air conditioner mounted on a vehicle is provided in a vehicle interior after mixing air cooled by an evaporator, which is a cooling means, and air heated by a heater core, which is a heating means, at a desired mixing ratio. The temperature and humidity in the passenger compartment are adjusted by blowing air from the defroster outlet, face outlet, or foot outlet.

  In this vehicle air conditioner, the air cooled by the evaporator circulates through the air mix door through the cold air passage in the air conditioning case so as to travel substantially straight toward the mix chamber, while a part of the air flows. The air is introduced into the hot air passage and heated by the heater core, and the heated air flows from the lower side of the housing toward the upper side toward the mix chamber. The air introduced into the cold air passage is mixed with the air heated in the mix chamber and adjusted to a desired temperature, and then the defroster air passage, face air passage or It is selectively supplied to the foot air passage.

  In general, in a vehicle equipped with a vehicle air conditioner, side air outlets through which air conditioned air is blown from the vehicle air conditioner are provided on the driver seat side and the passenger seat side, respectively. In any case, such as during cooling and heating, the air is constantly blown from the side air blowing port.

  As such a vehicle air conditioner, in the upper part of the air conditioning case, a defroster opening disposed on the evaporator side, a face opening disposed on the heater core side at a predetermined interval from the defroster opening, A side face opening disposed between the defroster opening and the face opening is formed, and the side face opening regardless of the rotational state of the defroster door provided rotatably in the air conditioning case. Since it communicates with the cool / warm air mixing space where the cool air and the warm air are mixed, the conditioned air is blown to the side air vent of the vehicle through the side face opening (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-166838

  By the way, in the prior art which concerns on patent documents 1, by the positional relationship with the defroster opening part and face opening part to the cold / hot air mixing space in which the cold wind and warm air in an air-conditioning case are mixed, the cold / hot air mixing space, The air-conditioning air mixed in the cool / warm air mixing space is structured to easily flow to the defroster opening along the inner wall surface of the air-conditioning case. Therefore, in particular, in the defroster mode in which the face opening is blocked by the defroster door, the conditioned air is difficult to flow through the side face opening, and the flow rate introduced into the side face opening is reduced, so that air is blown from the side air blowing port of the vehicle. There is a problem that the air volume of the conditioned air is reduced.

  The present invention has been made in consideration of the above-described various problems, and is intended for a vehicle capable of increasing the air volume of mixed air blown to both side portions in a vehicle interior and suppressing the air volume reduction. An object is to provide an air conditioner.

In order to achieve the above object, the present invention includes a cooling unit that cools air and supplies cold air, a heating unit that heats the air and supplies hot air, and the cool air and the hot air in a mixing unit. In an air conditioner for a vehicle having an air mix door for mixing the air at a predetermined mixing ratio and a plurality of air outlets for blowing the mixed air mixed at the mixing ratio to a predetermined portion,
A face blower having a center blowing part for blowing the mixed air to the front seat central part in the vehicle interior and a side face blowing part for blowing the mixed air to both side parts of the vehicle interior around the front seat central part. Exit,
A passage for guiding the mixed air from the mixing section to the face outlet;
A face door that controls the amount of airflow of the mixed air to the face outlet;
A guide part that faces the side face blowing part in the passage and always guides the mixed air from the mixing part to the side face blowing part,
A notch portion formed to face the guide portion in the face door, and cut away so as to avoid contact with the guide portion when the face door rotates;
It is characterized by providing.

According to the present invention, the mixed air introduced from the mixing portion into the passage is provided in the passage communicating the face outlet and the mixing portion by providing the guide portion facing the side face outlet of the face outlet. A part of can be guided to the side face blowing part through the guide part. Therefore, when the mixed air is blown from the mixing unit to the center face blowing unit and the side face blowing unit, it is possible to increase the amount of air blown from the side face blowing unit, and to a predetermined amount with respect to both sides in the vehicle interior. The mixed air can be reliably blown with the blown amount. Further, even when the face air outlet is closed by the face door, a part of the mixed air can be forcibly guided from the mixing portion to the side face air outlet through the guide portion. Therefore, the mixed air can be reliably blown without reducing the amount of air blown to both sides of the vehicle interior. Further, the face door is provided with a notch portion facing the guide portion and capable of avoiding contact with the guide portion, so that even when the face blowing portion is closed by the face door, the notch corresponding to the guide portion is provided. Since the side face blowing part, the guide part, and the mixing part are in communication with each other through the part, the mixed air can be reliably and suitably blown from the mixing part to both side parts of the vehicle interior.

  Furthermore, by arranging the guide portion substantially parallel to the flow direction of the mixed air in the passage, the guide portion provided in the passage when the mixed air flows through the passage toward the face outlet. However, since there is no flow resistance of the mixed air, it is possible to suppress a decrease in the amount of air blown from the face air outlet due to the provision of the guide portion.

  According to the present invention, the following effects can be obtained.

  That is, a guide portion facing the side face blowout portion of the face blowout port is provided in a passage communicating the face blowout port and the mixing portion, and a part of the mixed air introduced from the mixing portion into the passage is guided. By guiding to the side face blowing part through the part, it is possible to increase the amount of mixed air blown from the side face blowing part to both sides in the vehicle interior. In addition, even when the face air outlet is blocked by the face door, a part of the mixed air can be forcibly guided to the side face air outlet via the guide part. The amount of air blown to both sides of the room does not decrease, and air can be reliably blown.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a vehicle air conditioner according to the present invention will be described in detail below with reference to the accompanying drawings.

  In FIG. 1, reference numeral 10 indicates a vehicle air conditioner according to an embodiment of the present invention.

  As shown in FIG. 1, the vehicle air conditioner 10 includes a housing 12 that forms air passages, an evaporator 14 (cooling means) that is disposed inside the housing 12 and cools the air, A heater core 16 (heating means) that heats the air, an air mix door 18 that mixes cold air and hot air whose temperature has been adjusted at a predetermined mixing ratio to produce mixed air, and a blow-out port for the mixed air It includes a set of first and second outlet doors 20,22 for selection.

  The housing 12 is arranged in the form shown in FIG. 1 with respect to the vehicle. The housing 12 is formed with an introduction passage 24 through which air is introduced from a blower fan (not shown) on the upstream side of the evaporator 14, and is first branched in the vertical direction by an air mix door 18 on the downstream side of the evaporator 14. And the 2nd channel | paths 26 and 28 are formed. A first opening 30 is formed in the middle of the first passage 26 and opens upward, and the opening thereof is adjusted by the air mix door 18. A second opening 32 is formed which opens toward the front and whose opening is adjusted by the air mix door 18.

  Further, as shown in FIG. 2, the housing 12 has a face outlet 34 that opens in a substantially rectangular shape and blows air near the head of the passenger in the vehicle, and is spaced apart from the face outlet 34 by a predetermined distance. Thus, a defroster outlet 36 is formed which is arranged on the upper side of the evaporator 14 and blows air in the vicinity of a front window (not shown) in the vehicle. The face air outlet 34 is divided in the width direction by a plurality of (for example, three) dividing ribs 38, and the divided face air outlet 34 includes a center face air outlet 40 formed at a substantially central portion. And a pair of side face blowing parts 42 a and 42 b provided at both ends of the center face blowing part 40. The center face outlet 40 communicates with a center outlet near a center console (not shown) provided in the center of the front seat in the passenger compartment, and the side face outlets 42a and 42b are a driver's seat and an assistant (not shown). The air outlets communicate with side air outlets (not shown) arranged on both sides near the side window of the seat.

  As shown in FIGS. 1 and 2, the air mix door 18 is pivotally supported by the housing 12 via a shaft portion 44 and is formed with a predetermined width toward the evaporator 14 side. And the air mix door 18 restrict | squeezes the flow volume of the air which distribute | circulates through this 1st opening part 30 by rotating to the 1st opening part 30 side, and obstruct | occludes this 1st opening part 30 in the rotation termination position. ing. On the other hand, when the air mix door 18 rotates toward the second opening 32, the flow rate of the air flowing through the second opening 32 is reduced, and the second opening 32 is closed at the rotation end position. Yes. That is, the flow rate of the air flowing from the introduction passage 24 through the first and second openings 30 and 32 is controlled according to the turning amount and the turning direction of the air mix door 18, and accordingly, the first and second passages are controlled. The flow rate ratio of the air introduced into 26 and 28 is adjusted.

  Further, the heater core 16 is provided on the downstream side of the second passage 28, and a third passage 46 communicating with the second passage 28 via the heater core 16 is formed on the downstream side of the heater core 16. The third passage 46 extends from the lower side of the housing 12 upward along the side surface of the heater core 16, and is curved so that the upper end of the third passage 46 approaches the first opening 30 side. Formed.

  Furthermore, the upper end portion of the third passage 46 and the first passage 26 are joined at a substantially central portion of the housing 12, and a mixing portion in which the cold air from the evaporator 14 and the hot air from the heater core 16 are mixed at the joining portion. 48 is formed. The mixing unit 48 is disposed at a position facing the first opening 30.

  In the mixing part 48, while switching the ventilation state to the face blower outlet 34 and the defroster blower outlet 36 formed in the upper part of the housing 12, the 1st blower outlet door (face door) 20 which can adjust the ventilation quantity, A second air outlet door 22 is provided that can switch the air blowing state to the foot passage 52 and adjust the air blowing amount. In addition, a face passage (passage) 56 extending upward is formed in the upper part of the mixing unit 48, and the mixing unit 48 and the face outlet 34 are communicated with each other, and at the side of the mixing unit 48. The foot passage 52 is connected in a direction away from the evaporator 14. The foot passage 52 is adjacent to the third passage 46 through the boundary wall 58 and communicates with a foot outlet (not shown) that opens in the vicinity of the passenger's feet in the passenger compartment.

  In addition, a third opening 60 that can be closed by the second outlet door 22 is formed at the boundary portion between the mixing portion 48 and the face passage 56, and at the boundary portion between the mixing portion 48 and the foot passage 52. Similarly, a fourth opening 62 that can be closed by the second air outlet 22 is formed.

  A defroster passage 64 that is inclined at a predetermined angle upward and communicates with the defroster outlet 36 is formed at the side of the face passage 56, and the defroster passage 64 is closed by the first outlet door 20. The face passage 56 communicates with the opening 66.

  The face passage 56 is provided with a pair of guide plates (guide portions) 68a and 68b at positions facing the pair of side face blowing portions 42a and 42b (see FIG. 2). The guide plates 68a and 68b are formed in a substantially rectangular shape, are provided substantially parallel to the first outlet door 20 when the fifth opening 66 is closed (see FIG. 1), and from the inner wall surface of the housing 12. A predetermined width extends toward the center face outlet 40 along the width direction of the face outlet 34.

  Further, as shown in FIG. 1, the guide plates 68 a and 68 b are provided on the defroster passage 64 side with a predetermined distance from the inner wall surface of the housing 12 on which the second outlet door 22 is pivotally supported. .

  Further, the guide plates 68 a and 68 b extend from the opening portions of the side face blowing portions 42 a and 42 b by a predetermined length toward the mixing portion 48 side, and their end portions extend to the third opening portion 60. .

  As shown in FIGS. 3 to 5, the first air outlet door 20 is formed in a substantially rectangular shape corresponding to the face air outlet 34, and a shaft portion 44 provided on one end side thereof is connected to the face air outlet 34. It is pivotally supported between the defroster outlet 36 (see FIG. 1). Therefore, the first outlet door 20 is rotatable between the face outlet 34 and the fifth opening 66 by a predetermined angle.

  Further, the first outlet door 20 is provided with a pair of first cutout portions (cutout portions) 70a and 70b on the other end portion side opposite to the one end portion side on which the shaft portion 44 is provided. The first cutout portions 70 a and 70 b are formed with a predetermined width from both ends of the first outlet door 20 along the axial direction of the shaft portion 44, and are formed substantially parallel to the shaft portion 44.

  Further, as shown in FIGS. 3 and 4, the first notches 70a and 70b are opposed to the side face outlets 42a and 42b of the face outlet 34, respectively, and the width of the first notches 70a and 70b. The dimension L1 is substantially equal to or slightly larger than the width dimension L2 of the guide plates 68a and 68b (L1 ≧ L2). Therefore, the first air outlet door 20 is rotationally displaced so as to avoid the guide plates 68a and 68b via the first notches 70a and 70b.

  As shown in FIG. 1, the second air outlet door 22 has a shaft portion 44 provided on one end side thereof pivotally supported on the upper portion of the fourth opening 62, and the fifth opening 66 and the third opening. It can be freely rotated by a predetermined angle with respect to 60.

  Further, as shown in FIG. 6, the second air outlet door 22 has a set of second notch portions that are notched in parallel with the shaft portion 44 from both ends along the axial direction on the shaft portion 44 side. 72a and 72b are provided. The second notches 72a and 72b are formed at positions facing the guide plates 68a and 68b, respectively, and the width L3 of the second notches 72a and 72b is substantially equal to the width L2 of the guide plates 68a and 68b. Alternatively, it is formed slightly larger (L3 ≧ L2), and is formed substantially equal to the width dimension L1 of the first notches 70a and 70b (L3≈L1). That is, when the 2nd blower outlet door 22 contact | abuts to the 3rd opening part 60, 2nd notch part 72a, 72b opposes guide plate 68a, 68b.

  That is, when the first air outlet door 20 comes into contact with the face air outlet 34, a part of the air introduced from the mixing portion 48 into the face passage 56 flows along the guide plates 68a and 68b and flows into the face air outlet. When the second air outlet door 22 comes into contact with the third opening 60 while being distributed to the side face air outlets 42a and 42b through the first notches 70a and 70b opened facing the outlet 34, the mixing is performed. After air is introduced from the portion 48 into the face passage 56 through the second cutout portions 72a and 72b and flows along the guide plates 68a and 68b, the air passes through the first cutout portions 70a and 70b to the side face blowing portions 42a and 42b. Circulate.

  In other words, the first cutouts 70a and 70b, the guide plates 68a and 68b, and the second cutouts 72a and 72b are provided so as to be arranged in a straight line with each other, and the mixing air of the mixing unit 48 is mixed. Is guided to the side face outlets 42a and 42b of the face outlet 34 through the second notches 72a and 72b, the guide plates 68a and 68b, and the first notches 70a and 70b.

  The vehicle air conditioner 10 according to the embodiment of the present invention is basically configured as described above. Next, its operation and effects will be described.

  First, when the vehicle air conditioner 10 is started, a blower fan (not shown) rotates and air is introduced into the housing 12 from the introduction passage 24. The introduced air is cooled by passing through the evaporator 14, and is supplied to the first passage 26 and / or the second passage 28 as cold air.

  In this case, assuming that the air mix door 18 is set in the state shown in FIG. 1, the cold air supplied to the first passage 26 is introduced into the mixing portion 48 through the first opening 30 and is then introduced into the second passage 28. The supplied cold air is heated by passing through the heater core 16 to become warm air, and is introduced into the mixing unit 48 through the third passage 46.

  The mixed air obtained by mixing the cool air and the warm air in the mixing unit 48 is a face air outlet 34, a defroster air outlet 36, a foot air outlet (not shown) selected according to the setting state of the vehicle air conditioner 10. Air) into the passenger compartment.

  For example, as shown in FIG. 1, the first air outlet door 20 abuts the fifth opening 66 to close the defroster passage 64 to connect the mixing portion 48 and the face passage 56, and the second air outlet door. The case of the face mode in which the mixing portion 48 and the face air outlet 34 are communicated with each other by contacting the fourth opening 62 and closing the foot passage 52 will be described.

  The mixed air mixed in the mixing portion 48 flows from the mixing portion 48 toward the face passage 56, and in the face passage 56, the mixing air flows between the guide plates 68 a and 68 b and the first outlet door 20. The wind is blown into the vehicle compartment through the center face outlet 40 and the side face outlets 42a and 42b of the face outlet 34, and a part of the mixed air flowing through the face passage 56 is part of the guide plates 68a and 68b. Along the guide plate 68a, 68b and the inner wall surface of the housing 12, and is blown into the vehicle compartment from a side blowout port of the vehicle (not shown) through the side face blowout portions 42a, 42b. That is, a part of the mixed air flowing through the face passage 56 is semi-forcedly guided to the side face blowing parts 42a and 42b under the guide action by the guide plates 68a and 68b (see FIG. 3).

  At this time, since the guide plates 68a and 68b are disposed substantially parallel to the blowing direction of the mixed air, the guide plates 68a and 68b do not become resistance when the mixed air flows.

  Next, as shown in FIG. 7, the first air outlet door 20 contacts the face air outlet 34 to connect the face passage 56 and the defroster passage 64, and the second air outlet door 22 has a third opening. A case of the heat mode in which the mixing portion 48 and the foot passage 52 are communicated with each other in contact with 60 will be described.

  In this case, the mixed air mixed in the mixing unit 48 flows from the mixing unit 48 to the foot passage 52 through the fourth opening 62 and is blown from a foot outlet (not shown) to the vicinity of the feet of the passenger in the vehicle. The The mixed air is introduced between the guide plates 68a and 68b in the face passage 56 and the housing 12 through the second cutout portions 72a and 72b of the second outlet door 22, and along the guide plates 68a and 68b. After distribution, the air is blown from the side air outlet of the vehicle (not shown) through the side face air outlets 42a and 42b of the face air outlet 34.

  That is, even when the vehicle air conditioner 10 is in the heat mode, the mixed air is blown with a predetermined air volume to the side face outlets 42a and 42b of the face outlet 34, and therefore, from the side outlet in the vehicle interior (not shown). Can blow.

  Next, as shown in FIG. 8, the first air outlet door 20 abuts the face air outlet 34 to connect the mixing portion 48 and the defroster passage 64 through the face passage 56, and the second air outlet door. The case of the defroster mode in which 22 contacts the fourth opening 62 and closes the foot passage 52 will be described.

  In this case, the mixed air mixed in the mixing unit 48 flows from the mixing unit 48 to the face passage 56 through the third opening 60 and then flows to the defroster passage 64 through the fifth opening 66. Then, the air is blown from the defroster outlet 36 to the vicinity of the front window of the vehicle. A part of the mixed air is introduced between the guide plates 68a and 68b in the face passage 56 and the inner wall surface of the housing 12, and flows along the guide plates 68a and 68b. The air is blown from a side air outlet in the vehicle compartment (not shown) through the side face outlets 42a and 42b.

  That is, even when the vehicle air conditioner 10 is in the defroster mode, the mixed air is sent to the side face outlets 42a and 42b of the face outlet 34 through the guide plates 68a and 68b with a predetermined air volume. The air can be blown from the side air outlet.

  As described above, in the present embodiment, a set of guides facing the side face outlets 42 a and 42 b of the face outlet 34 inside the face passage 56 connecting the face outlet 34 and the mixing portion 48. Plates 68a and 68b are provided, and first and second cutout portions 70a, 70b, 72a and 72b are provided at the ends of the first and second outlet doors 20 and 22 facing the guide plates 68a and 68b, respectively. . Thereby, even when the 1st blower outlet door 20 contact | abuts to the face blower outlet 34, and the 2nd blower outlet door 22 contact | abuts to the 3rd opening part 60, a part of mixed wind is 2nd notch part. It can distribute | circulate along the guide plates 68a and 68b through 72a and 72b, and can be reliably guide | induced to the side face blowing parts 42a and 42b via the 1st notch parts 70a and 70b.

  Thus, a predetermined amount of mixing is performed with respect to the side face outlets 42a and 42b even in the heat mode, the defroster mode, and the heat / diff mode in which the face outlet 34 is closed by the first and second outlet doors 20 and 22. Since the wind can be reliably blown, it is possible to always blow air from the side air outlets opened on the driver's seat side and the passenger seat side which are both sides in the passenger compartment.

  Further, even in the defroster mode in which the air is blown from the defroster outlet 36 disposed adjacent to the face outlet 34, a part of the mixed air flowing from the mixing section 48 toward the defroster outlet 36 is guided by the guide plates 68a and 68b. Since it can be semi-forcedly distributed to the face outlet 34 side, it is possible to prevent a reduction in the amount of air blown from the side face outlets 42a and 42b even in the defroster mode.

  Further, since the guide plates 68a and 68b are disposed substantially parallel to the flow direction of the mixed air blown from the face air outlet 34, the mixed air flows in the face passage 56 during the face mode of the vehicle air conditioner 10. There is no resistance to distribution. Therefore, the mixed air can be reliably and suitably guided to the center face air outlet 40 and the side face air outlets 42a and 42b in the face air outlet 34 without reducing the air volume of the air.

1 is an overall longitudinal sectional view of a vehicle air conditioner according to an embodiment of the present invention. FIG. 2 is a partially omitted plan view of the vehicle air conditioner of FIG. 1. It is a schematic perspective view which shows the relationship between a 1st blower outlet door, a 2nd blower outlet door, and a guide plate in the vehicle air conditioner of FIG. It is the schematic perspective view which looked at the 1st blower outlet door of FIG. 3, the 2nd blower outlet door, and the guide plate from the downward direction. It is a single top view of the 1st blower door in the vehicle air conditioner of FIG. It is a single top view of the 2nd blower door in the vehicle air conditioner of FIG. It is a whole longitudinal cross-sectional view which shows the state which the vehicle air conditioner of FIG. 1 is a heat mode. It is a whole longitudinal cross-sectional view which shows the state which is the defroster mode of the vehicle air conditioner of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vehicle air conditioner 12 ... Housing 14 ... Evaporator 16 ... Heater core 18 ... Air mix door 20 ... 1st outlet door 22 ... 2nd outlet door 26 ... 1st channel | path 28 ... 2nd channel | path 34 ... Face outlet 36 ... defroster outlet 40 ... center face outlet 42a, 42b ... side face outlet 46 ... third passage 48 ... mixing portion 52 ... foot passage 56 ... face passage 64 ... defroster passage 68a, 68b ... guide plates 70a, 70b ... first 1 notch 72a, 72b ... 2nd notch

Claims (2)

Cooling means for cooling air and supplying cold air, heating means for heating the air and supplying hot air, and an air mix door for mixing the cold air and the hot air at a predetermined mixing ratio in a mixing section And a vehicle air conditioner having a plurality of air outlets that blow out the mixed air mixed at the mixing ratio to a predetermined part,
A face blower having a center blowing part for blowing the mixed air to the front seat central part in the vehicle interior and a side face blowing part for blowing the mixed air to both side parts of the vehicle interior around the front seat central part. Exit,
A passage for guiding the mixed air from the mixing section to the face outlet;
A face door that controls the amount of airflow of the mixed air to the face outlet;
A guide part that faces the side face blowing part in the passage and always guides the mixed air from the mixing part to the side face blowing part,
A notch portion formed to face the guide portion in the face door, and cut away so as to avoid contact with the guide portion when the face door rotates;
A vehicle air conditioner comprising: The vehicle air conditioner according to claim 1,
The vehicle air conditioner is characterized in that the guide portion is disposed substantially parallel to a flow direction of the mixed air in the passage.

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