JP4812509B2 - Air conditioner for automobile - Google Patents

Description

  The present invention relates to an automotive air conditioner that blows conditioned air to both a front seat side and a rear seat side.

  A conventional automobile air conditioner of this type is disclosed in Patent Document 1.

  The air conditioning unit 100 of this automobile air conditioner has an air conditioning case 101 as shown in FIGS. An air passage 102 is formed in the air conditioning case 101, and an evaporator 103, an air mix door 104, and a heater core 105 are sequentially arranged in the air passage 102. Further, the downstream side of the air mixing door 104 in the air passage 102 is divided into three in the direction perpendicular to the air blowing direction. Three of the three dividing paths are formed as a front side passage 102a and a center as a rear side passage 102b. 9 shows the front side passage 102a, and FIG. 10 shows the rear side passage 102b.

  The air mix door 104 is disposed across the front-side passage 102 a and the rear-side passage 102 b and adjusts the air distribution ratio between the air that passes through the heater core 105 and the air that bypasses the heater core 105.

  Downstream of the front passage 102a, a defroster opening 107 that is opened and closed by the defroster door 106, a vent opening 109 that is opened and closed by the vent door 108, and a foot opening 111 that is opened and closed by the foot door 110 are opened.

  A rear opening 112 and a front communication port 113 opened to the front side passage 102a are opened downstream of the rear side passage 102b. The rear opening 112 and the front communication port 113 are selectively opened and closed by a rear door 114. A rear vent foot switching door 116 is provided in the rear passage 115 whose one end is open to the rear opening 112. The rear vent foot switching door 116 selectively opens and closes the rear vent opening 117 and the rear foot opening 118.

In the above configuration, when the defroster mode is selected, the defroster door 106 is in the open position, the vent door 108 is in the fully closed position, the foot door 110 is in the fully closed position, and the rear door 114 is in the fully open position of the front communication port 113. Located in. As a result, the conditioned air passing through the front-side passage 102 a and the conditioned air passing through the rear-side passage 102 b are both guided to the defroster opening 107. In this way, all the conditioned air in the air passage 102 can be blown out from the defroster outlet (not shown), and a powerful window clearing effect can be realized.
JP 2000-272327 A

  However, in the conventional automobile air conditioner, when the defroster mode is selected, both the conditioned air in the front-side passage 102a and the conditioned air in the rear-side passage 102b are guided to the defroster outlet (not shown). Since both the door 106 and the rear door 114 need to be individually controlled, there is a problem that the control is complicated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an automotive air conditioner that can blow out air-conditioned air from both a front-side passage and a rear-side passage from a defroster outlet through simple control when a defroster mode is selected.

According to the first aspect of the present invention for achieving the above object, a first defroster opening, a front side passage through which a front vent opening and a foot opening are opened, a second defroster opening and a rear vent opening are provided in the air passage in the air conditioning case. A front and rear partition wall that is divided into a rear-side passage that is opened, a vent foot switching door that selectively opens and closes the front vent opening and the foot opening, and a first that opens and closes the first defroster opening. A first defroster door; a second defroster door that opens and closes the second defroster opening; and a first support shaft that coaxially supports the first defroster door and the second defroster door. wherein the first defroster door by the movement of the shaft second defroster door is configured so as to be located both the same open and closed positions, the first defroster door open position When the first defroster door is in the closed position, both the front vent opening and the foot opening are closed, and when the first defroster door is in the closed position, A front-side intermediate mode door that shifts between a first position that lengthens the mixed region of the conditioned air and a second position that guides the conditioned air in the front-side passage straight to the front vent opening; When the 2 defroster door is in the open position, the rear vent opening is closed in cooperation with the second defroster door, and when the second defroster door is in the closed position, In the rear side, which changes between a first position where the mixed region of the conditioned air is lengthened and a second position where the conditioned air in the rear passage is straightly guided to the rear vent opening. And a second support shaft that coaxially supports the front-side intermediate mode door and the rear-side intermediate mode door, and the front-side intermediate mode door and the rear-side are moved by the movement of the second support shaft. The intermediate mode doors are both configured to be located at the same opening / closing position .

Invention of Claim 2 is the air conditioning apparatus for motor vehicles of Claim 1 , Comprising: The said air-conditioning case is comprised from a pair of outer case division member and the inner case arrange | positioned in this pair of outer case division member. The inner case has the front and rear partition walls, supports the doors, and is arranged in the pair of outer case split members, and the air passage is connected to the front side passage and the front case. It is characterized by being divided into rear passages.

  According to the first aspect of the present invention, when the defroster mode is selected, the first defroster door and the second defroster door are both in the open position by the control of the first support shaft, and the air conditioning of both the front side passage and the rear side passage is performed. Wind is directed to the first and second defroster openings, respectively. Therefore, when the defroster mode is selected, the conditioned air in both the front-side passage and the rear-side passage can be blown out from the defroster outlet by simple control.

In addition , when the vent mode is selected, the front intermediate mode door and the rear intermediate mode door are both positioned at the second position by the control of the second support shaft, and the conditioned air passing through the front passage smoothly passes through the front vent opening. In addition, the conditioned air passing through the rear passage is smoothly guided to the rear vent opening. Therefore, when the vent mode is selected, the air volume to the front vent outlet and the rear vent outlet can be secured with simple control. Further, if the front side intermediate mode door and the rear side intermediate mode door are both positioned at the first position by the control of the second support shaft when the first and second defroster doors are closed, the front side passage and the rear side Since the mixed region of the conditioned air can be made sufficiently long in both the passages, the temperature adjustment performance is improved.

  Furthermore, it is possible to always distribute air to the rear vent opening in the blowing mode other than the defroster mode without providing a rear dedicated door that is controlled independently from the front side.

According to the invention of claim 2 , in addition to the effect of the invention of claim 1, by accommodating the inner case in the pair of outer case dividing members, the air passage in the air conditioning case is made into a front side passage and a rear side passage. Since it can be divided and various doors can be arranged at predetermined positions, the assembling workability is good.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 8 show an embodiment of the present invention, FIG. 1 is a perspective view of an air conditioning unit of an automotive air conditioner, FIG. 2 is an exploded perspective view of the air conditioning unit, and FIG. 3 is a sectional view of the air conditioning unit. 4 (a) to 4 (c) are perspective views showing respective assembly processes of the air conditioning unit, FIG. 5 (a) is a cross-sectional view of the front-side passage in the vent mode, and FIG. 5 (b) is a cross-section of the rear-side passage in the vent mode. 6A is a cross-sectional view of the front-side passage in the bi-level mode, FIG. 6B is a cross-sectional view of the rear-side passage in the bi-level mode, and FIG. 7A is a front view of the differential foot (heat) mode. 7B is a sectional view of the rear side passage in the differential foot (heat) mode, FIG. 8A is a sectional view of the front side passage in the defroster mode, and FIG. 8B is a defroster. It is sectional drawing of the rear side channel | path of a mode.

  The automotive air conditioner is disposed approximately at the center of the front part of the passenger compartment, and is generally configured by a blower unit (not shown) and the air conditioning unit 1. A blower unit (not shown) sucks outside air or inside air and sends it to the air conditioning unit 1. The air conditioning unit 1 uses the air from a blower unit (not shown) as conditioned air at a desired temperature and distributes the conditioned air. Hereinafter, the configuration of the air conditioning unit 1 will be described in detail.

  As shown in FIGS. 1 to 3, the air conditioning unit 1 includes an air conditioning case 2 in which a pair of left and right outer case division members 2 a and 2 b are assembled. An air passage 3 is formed in the air conditioning case 2, and the air passage 3 is arranged in the air blowing direction by two front and rear partition walls 40 located on the side surface of the inner case 7 on the downstream side from the position of the mix door box 5 described below. It is divided into three passages along. The left and right two of these three dividing paths are formed as a front side passage 3a, and the center is formed as a rear side passage 3b.

  In the air passage 3, the evaporator 4, the mix door box 5, and the heater core 6 are sequentially arranged from the upstream side so as to straddle the left and right front side passages 3 a and the central rear side passage 3 b. The evaporator 4 cools the blown air to cool air. The heater core 6 heats the air to make warm air.

  The mix door box 5 has a slide type air mix door 5a. The air mix door 5 a adjusts the air distribution ratio between the air that passes through the heater core 6 and the air that bypasses the heater core 6.

  A front-side air mix area E1 where hot air that has passed through the heater core 6 and cold air that has bypassed the heater core 6 merge is formed downstream of the front-side passage 3a. As shown in FIG. 5A, a first defroster opening 10, a front vent opening 11, and a foot opening 12 are opened at positions facing the front air mix area E1, respectively. The first defroster opening 10 is connected to a defroster outlet (not shown) that blows conditioned air toward the windshield. The front vent opening 11 is connected to a front vent outlet (not shown) that blows conditioned air toward the upper body of the front seat passenger. The foot opening 12 faces a front foot outlet (not shown) that blows air-conditioned air toward the lower half of the front seat occupant through the foot passage 30 in the air conditioning case 2 and the lower body of the rear occupant. Are connected to rear foot outlets (not shown) for blowing out conditioned air. The foot passage 30 is formed by partitioning the front passage 3 a by a first partition wall 31.

  The first defroster opening 10 is opened and closed by a first defroster door 13. The front vent opening 11 and the foot opening 12 are selectively opened and closed by a vent foot switching door 14. Further, a front-side intermediate mode door 15 is disposed at the position of the front-side air mix area E1. When the first defroster door 13 is in the open position, the front intermediate mode door 15 cooperates with the first defroster door 13 to close both the front vent opening 11 and the foot opening 12. And when the 1st defroster door 13 is located in a closed position, the 1st position (FIG. 6 (a), FIG. 7 (a), FIG. 8 (a) which lengthens the mixing area | region of the conditioned air of the front side channel | path 3a. ) And the second position (FIG. 5A) that guides the conditioned air in the front passage 3a straight to the front vent opening 11 when the first defroster door 13 is in the closed position. Change.

  A rear-side air mix area E2 where hot air that has passed through the heater core 6 and cold air that has bypassed the heater core 6 merge is also formed downstream of the rear-side passage 3b. As shown in FIG. 5B, a second defroster opening 16 and a rear vent opening 17 are opened at positions facing the rear-side air mix area E2. Similar to the first defroster opening 10, the second defroster opening 16 is connected to a defroster outlet (not shown) that blows conditioned air toward the windshield. The rear vent opening 17 has a rear vent outlet 18 (shown in FIG. 3) that blows conditioned air toward the upper body of the passenger in the rear seat via a rear vent passage 32 and a rear vent duct 33 (shown in FIG. 3) in the air conditioning case 2. ) And a rear upper vent air outlet 19 (shown in FIG. 3) that blows air-conditioned air almost toward the ceiling of the rear seat. The rear vent passage 32 is formed by partitioning the rear vent passage 32 from the rear side passage 3b by a second partition wall 34. The second partition wall 34 and the first partition wall 31 are formed continuously in the assembly direction of the outer case split members 2a and 2b with the front and rear partition walls 40 interposed therebetween.

  The rear vent outlet 18 and the rear upper vent outlet 19 are selectively opened and closed by a rear switching grill 20 as shown in FIG.

  The second defroster opening 16 is opened and closed by the second defroster door 21. A rear intermediate mode door 22 is arranged at the position of the rear air mix area E2. When the second defroster door 21 is located at the open position, the rear intermediate mode door 22 cooperates with the second defroster door 21 to close the rear vent opening 17 and the second defroster door 21 In the closed position, the first position (FIGS. 6B, 7B, and 8B) that lengthens the mixed region of the conditioned air in the rear passage 3b and the second defroster door When 21 is located at the closed position, the air-conditioning air in the rear side passage 3b is shifted between the second position (FIG. 5B) that guides the conditioned air straight to the rear vent opening 17.

  The first defroster door 13 and the second defroster door 21 are supported by the same first support shaft 23. The first defroster door 13 and the second defroster door 21 are both set at the same opening / closing position by the rotational movement of the first support shaft 23. The front intermediate mode door 15 and the rear intermediate mode door 22 are supported by the same second support shaft 24. The front side intermediate mode door 15 and the rear side intermediate mode door 22 are both set at the same opening / closing position by the rotational movement of the second support shaft 24.

  Next, the assembly of the air conditioning unit 1 will be briefly described. For simplicity of explanation, the assembly of the evaporator 4 and the heater core 6 is omitted. First, as shown in FIG. 4A, one outer case dividing member 2a is set. Next, as shown in FIG. 4B, a rear structure A in which all the doors 13, 14, 15, 20, and 21 are supported by the inner case 7 is configured in advance, and the rear structure A is The outer case dividing member 2a is assembled. Next, as shown in FIG.4 (c), the mix door box 5 is assembled | attached to one outer case division member 2a and the rear structure A. As shown in FIG. Finally, the other outer case dividing member 2b is assembled to the one outer case dividing member 2a so as to cover the rear structure A inside (see FIG. 1).

  Next, the operation of the air conditioning unit 1 will be described. When the vent mode is selected, as shown in FIGS. 5A and 5B, the first and second defroster doors 13 and 21 are in the fully closed position, and the front and rear intermediate mode doors 15 and 22 are in the closed position. At the second position, the vent foot switching door 14 is positioned at the foot fully closed position. Accordingly, the conditioned air from the front-side passage 3a is guided to the front vent opening 11 and blown into the vehicle interior from the front vent outlet (not shown). The conditioned air from the rear side passage 3b is guided to the rear vent opening 17 and is blown into the vehicle interior from the rear vent outlet 18 or the rear upper vent outlet 19 depending on the position of the rear switching grill 20.

  When the bi-level mode is selected, as shown in FIGS. 6A and 6B, the first and second defroster doors 13 and 21 are in the fully closed position, and the front side and rear side intermediate mode doors 15 and 22 are set. Is located at a position where the front vent opening 11 and the foot opening 12 are partially opened. Accordingly, the conditioned air from the front-side passage 3a is guided to the front vent opening 11 and the foot opening 12, and is blown into the vehicle interior from the front vent outlet (not shown) and the front foot outlet (not shown). And a rear foot outlet (not shown). The conditioned air from the rear side passage 3b is guided to the rear vent opening 17 and is blown into the vehicle interior from the rear vent outlet 18 or the rear upper vent outlet 19 depending on the position of the rear switching grill 20.

  When the differential foot mode (heater mode) is selected, the first and second defroster doors 13 and 21 are connected to the first and second defroster openings 10 and 16 as shown in FIGS. The front and rear intermediate mode doors 15 and 22 are positioned at the first position, and the vent foot switching door 14 is positioned at the vent fully closed position. Accordingly, the conditioned air from the front-side passage 3a is guided to the first defroster opening 10 and the foot opening 12, and blown out from the defroster outlet (not shown) into the vehicle compartment and the front foot outlet (not shown). And a rear foot outlet (not shown). The conditioned air from the rear-side passage 3b is guided to the second defroster opening 16 and the rear vent opening 17, and is blown into the vehicle compartment from a defroster outlet (not shown) and the rear vent grille 20 is positioned depending on the position of the rear switching grill 20. The air is blown into the vehicle compartment from the outlet 18 or the rear upper vent outlet 19.

  When the defroster mode is selected, as shown in FIGS. 8A and 8B, the first and second defroster doors 13 and 21 are in the fully open position, and the front and rear intermediate mode doors 15 and 22 are in the first position. In one position, the vent foot switching door 14 is located in the vent fully closed position. Accordingly, the conditioned air from the front-side passage 3a is guided to the first defroster opening 10 and blown out into the vehicle compartment from a defroster outlet (not shown). The conditioned air from the rear side passage 3b is guided to the second defroster opening 16 and blown out into the vehicle compartment from a defroster outlet (not shown).

  As described above, in the present invention, the first defroster door 13 and the second defroster door 21 are supported by the same first support shaft 23. Therefore, when the defroster mode is selected, the first and second defroster doors 13 and 21 are both positioned at the open position by controlling only the position of the first support shaft 23. The conditioned air in both the side passage 3a and the rear side passage 3b can be blown out from a defroster outlet (not shown).

  In this embodiment, the front intermediate mode door 15 and the rear intermediate mode door 22 are supported by the same second support shaft 24. Therefore, when the vent mode is selected, if both the front-side intermediate mode door 15 and the rear-side intermediate mode door 22 are positioned at the second position by controlling only the position of the second support shaft 24, a simple operation can be performed. The air volume to the front vent outlet (not shown) and the rear vent outlet 18 can be secured by the control. In addition, the front intermediate mode door 15 and the rear intermediate mode door 22 are both positioned at the first position under the control of the second support shaft 24 when the first and second defroster doors 13 and 21 are closed. Since both the side passage 3a and the rear side passage 3b can take a sufficiently long mixed area of the conditioned air, the temperature adjustment performance is improved. Further, it is possible to always distribute air to the rear vent opening 17 in the blowing mode other than the defroster mode without providing a rear dedicated door that is controlled independently from the front side.

  In this embodiment, by accommodating the rear structure A in the pair of outer case dividing members 2a and 2b, the air passage 3 in the air conditioning case 2 can be divided into the front side passage 3a and the rear side passage 3b, and all Since the doors 13, 14, 15, 20, and 21 can be arranged at predetermined positions, the assembling workability is good.

  In this embodiment, the air conditioner for an automobile includes a blower unit that incorporates a blower and an air conditioning unit 1 that incorporates an evaporator 4 and a heater core 6. However, the air conditioner 1 includes a blower, an evaporator 4, and a heater core 6. It goes without saying that the present invention can be applied in the same manner even in a configuration including an integrated air conditioning unit that is built in all.

1 is a perspective view of an air conditioning unit of an automobile air conditioner according to an embodiment of the present invention. 1 is an exploded perspective view of an air conditioning unit according to an embodiment of the present invention. 1 is a cross-sectional view of an air conditioning unit according to an embodiment of the present invention. One Embodiment of this invention is shown, (a)-(c) is a perspective view which shows each assembly process of an air conditioning unit. 1A and 1B are cross-sectional views of a front-side passage in a vent mode, and FIG. 1B is a cross-sectional view of a rear-side passage in a vent mode according to an embodiment of the present invention. 1A and 1B are cross-sectional views of a front-side passage in a bi-level mode, and FIG. 1B is a cross-sectional view of a rear-side passage in a bi-level mode. 1A and 1B are cross-sectional views of a front-side passage in a differential foot (heat) mode, and FIG. 3B is a cross-sectional view of a rear-side passage in a differential foot (heat) mode according to an embodiment of the present invention. 1A and 1B are cross-sectional views of a front-side passage in a defroster mode, and FIG. 1B is a cross-sectional view of a rear-side passage in a defroster mode according to an embodiment of the present invention. It is sectional drawing of the front side channel | path of an air conditioning unit which shows a prior art example. It is sectional drawing of the rear side channel | path of an air conditioning unit which shows a prior art example.

Explanation of symbols

2 Air-conditioning cases 2a, 2b Outer case dividing member 3 Air passage 3a Front side passage 3b Rear side passage 7 Inner case 10 First defroster opening 11 Front vent opening 12 Foot opening 13 First defroster door 14 Vent foot switching door 15 Front side intermediate mode door 16 Second defroster opening 17 Rear vent opening 21 Second defroster door 22 Rear side intermediate mode door 23 First support shaft 24 Second support shaft A Rear structure

Claims (2)

The air passage (3) in the air conditioning case (2) has a first defroster opening (10), a front vent opening (11), a front side passage (3a) in which the foot opening (12) is opened, and a second Front and rear partition walls (40) that are divided into a defroster opening (16) and a rear side passage (3b) in which the rear vent opening (17) is opened;
A vent foot switching door (14) for selectively opening and closing the front vent opening (11) and the foot opening (12);
A first defroster door (13) for opening and closing the first defroster opening (10);
A second defroster door (21) for opening and closing the second defroster opening (16);
A first support shaft (23) that coaxially supports the first defroster door (13) and the second defroster door (21),
The first defroster door (13) and the second defroster door (21) are both positioned at the same opening / closing position by the movement of the first support shaft (23) ,
When the first defroster door (13) is in the open position, both the front vent opening (11) and the foot opening (12) are closed in cooperation with the first defroster door (13). State and
In the state where the first defroster door (13) is located at the closed position, the first position where the mixed area of the conditioned air in the front side passage (3a) is lengthened and the conditioned air in the front side passage (3a) is straightened. A front intermediate mode door (15) that shifts between a second position guided to the front vent opening (11);
In a state where the second defroster door (21) is located at the open position, the rear vent opening (17) is closed in cooperation with the second defroster door (21),
In the state where the second defroster door (21) is located at the closed position, the first position where the mixed area of the conditioned air in the rear side passage (3b) is lengthened and the conditioned air in the rear side passage (3b) is straightened. A rear side intermediate mode door (22) that shifts between a second position guided to the rear vent opening (17);
A second support shaft (24) for coaxially supporting the front-side intermediate mode door (15) and the rear-side intermediate mode door (22);
Automobile air characterized in that the front intermediate mode door (15) and the rear intermediate mode door (22) are both positioned at the same opening and closing position by the movement of the second support shaft (24). Harmony device. An air conditioner for an automobile according to claim 1 ,
The air conditioning case (2) is composed of a pair of outer case dividing members (2a, 2b) and an inner case (7) disposed in the pair of outer case dividing members (2a, 2b).
This inner case (7)
The front and rear partition walls (40);
And supports each door (13, 14, 15, 21, 22),
The air passage (3) is divided into the front side passage (3a) and the rear side passage (3b) in a state of being arranged in the pair of outer case division members (2a, 2b). Air conditioner for automobiles.

Images