JP3201534B2 - Air conditioner for rotary vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a rotary type vehicle. This vehicle air conditioner can be applied to, for example, an air conditioner that independently controls air flow in a front seat and air flow in a rear seat of a vehicle.

[0002]

2. Description of the Related Art Conventionally, as an air conditioner for a vehicle, FIG.
As shown in FIG. 0, a casing 100 having a cool air passage 101 and a warm air passage 102 provided therein, a fan 107 for introducing air into the casing 100 from an outside air inlet 104 and an inside air inlet 105, and the fan 100 introduced into the casing 100. An evaporator 110 for cooling the air, a heater core 112 for heating the air in the hot air passage 102, a front seat outlet 115, a rear seat outlet 116, a front seat outlet 115 and a rear seat outlet 116. It has a damper 114 for switching the opening ratio, a foot outlet 120 for blowing the wind sent to the foot side of the person, a damper 122 for opening and closing the foot outlet 120, and the front seat detected by the front seat air-conditioning state detecting means. By controlling the swing of the damper 114 on the basis of the air-conditioning state, the air-conditioning state of both the front and rear seats is favorably maintained while giving priority to the front seat side. It is known for the (JP-A-1-28
2012).

[0003]

By the way, in the vehicle air conditioner described above, the damper 114 has a plate door shape, and is of a swing type in which one end is pivotally supported by a shaft and the other end is swing. Similarly, the damper 122 also has a plate door shape, and is a swing type in which one end is pivotally supported by a shaft and the other end is swing.

An object of the present invention is to provide a rotary vehicle air conditioner having a rotary damper rotatable around an axis, which is different from the above-described conventional swing type.

[0005]

According to the present invention, there is provided a rotary air conditioner for a rotary vehicle, wherein a cool air supply port for supplying cool air, a hot air supply port for supplying warm air, and a wind blown toward the face of a person blows out. A casing having a face outlet and a foot outlet from which wind sent to the foot side of the person blows out, and having a cold air supply port, a hot air supply port, a face outlet, and a damper holding hole facing the foot outlet; A plurality of damper plate portions having a shaft core, rotatably held around the shaft core in a damper holding hole of the casing, and intermittently disposed at predetermined intervals along a circumferential direction around the shaft core. Cold air supply port, hot air supply port,
A rotary damper for opening and closing the face outlet and the foot outlet is provided, and each damper plate portion of the rotary damper is set to a bi-level mode in which both the foot outlet and the face outlet are opened to blow air from both. It is possible,
In the bi-level mode, the value of (opening ratio of hot air supply port / opening ratio of cold air supply port) increases with progress of rotation in one direction of the rotary damper, and (opening ratio of foot air outlet /
The value of the opening ratio of the face outlet is set to be large.

[0006] The rotary damper has an axis and is held rotatably around the axis in a damper holding hole of the casing. The rotary damper has a plurality of damper plate portions intermittently arranged at predetermined intervals along a circumferential direction around its axis. The damper plate portion opens and closes a cold air supply port, a hot air supply port, a face outlet, and a foot outlet as appropriate. The opening ratio of the hot air supply port or the like means an opening ratio of the opening to the entire opening area. When the opening is fully open, the opening ratio is 1, and when the opening is completely closed, the opening ratio is 0. When the opening is 50% open, the opening ratio is 0.5.

[0007]

In the bi-level mode in which air is blown from both the face outlet and the foot outlet, both the face outlet and the foot outlet are open. In such a bi-level mode, as the rotary damper rotates in one direction, the value of (opening ratio of hot air supply port / opening ratio of cold air supply port) increases, whereby the hot air supply port enters the damper holding hole from the hot air supply port. As the amount of hot air supplied increases, the amount of cool air supplied from the cool air supply port into the damper holding hole decreases. As a result, the temperature of the air in which the hot air and the cold air are mixed in the damper holding hole rises.

In addition, as the rotary damper rotates in one direction, the value of (opening ratio of foot outlet / opening ratio of face outlet) increases, the amount of air blown out from the foot outlet increases, and the face blowing increases. The amount of air blown from the outlet decreases. At this time, as described above, since the temperature of the air in which the hot air and the cold air are mixed is rising, the temperature of the air blown out from each outlet is increasing. As a result, a large amount of high-temperature wind is blown toward the occupant's legs, so that the occupant's legs are effectively warmed.

In the vehicle air conditioner of the present invention, in the bi-level mode, the value of (open ratio of hot air supply port / opening ratio of cold air supply port) decreases as the rotary damper rotates in the reverse direction. That is, the amount of hot air supplied from the hot air supply port into the damper holding hole decreases, and the amount of cold air supplied from the cold air supply port into the damper holding hole increases. As a result, the temperature of the air in which the hot air and the cold air are mixed in the damper holding hole decreases.

Further, as the rotary damper rotates in the opposite direction, the value of (the opening ratio of the foot outlet / the opening ratio of the face outlet) becomes smaller, the amount of air blown out from the foot outlet decreases, and the face blowout decreases. The amount of air blown from the outlet increases. At this time, as described above, since the temperature of the mixed air of the warm air and the cool air in the damper holding hole is decreasing, the temperature of the air blown out from each outlet is decreasing. As a result, a large amount of low-temperature wind is blown toward the occupant's face, and the occupant's face is effectively cooled.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In the vehicle air conditioner of the present embodiment, as shown in FIG. 1, a cool air passage 10 through which cool air passes
A cool air supply port 11, a hot air passage 12 through which warm air passes, a hot air supply port 13, a face outlet 14 through which air is blown toward the occupant's face, and a wind blown toward the occupant's feet. A foot outlet 15 is formed. Further, a substantially columnar damper holding hole 17 is formed in the casing 1. The inner wall surface 17a defining the damper holding hole 17 is
It functions as a guide wall for guiding rotation of the rotary damper 3 described later. The damper holding hole 17 includes a cold air supply port 11, a hot air supply port 13, a face air outlet 14, and a foot air outlet 15.
Are facing each other. Further, a heater core 20 is provided in the hot air passage 12, and the heater core 20 uses hot water from the engine as a heating source to heat air passing through the hot air passage 12. The evaporator 21 of the cooling cycle faces the warm air passage 12 and the cool air passage 10. The evaporator 21 dehumidifies and cools the air passing through the warm air passage 12 and the cool air passage 10. Further, the fan chamber 1 of the casing 1
9 is provided with a fan 23. The fan chamber 19 communicates with an outside air inlet and an inside air inlet (not shown). And
When the fan 23 is driven, air is sucked into the fan chamber 19 of the casing 1 from the outside air inlet and the inside air inlet. Air passing through the heater core 12 is heated when passing through the heater core 20 to become warm air, and reaches the damper holding hole 17.

FIG. 4 is a sectional view showing the vicinity of the damper holding hole 17. As shown in FIG. 4, the cold air supply port 11 and the hot air supply port 1
3, the face outlet 14 and the foot outlet 15 are formed around the axis P3 of the damper holding hole 17 with reference to 45 °. FIG. 5 shows a side view of the rotary damper 3. As shown in FIG. 5, the rotary damper 3 includes a first damper plate portion 31, a second damper plate portion 32, and a third damper plate portion 33 which are intermittently arranged along the circumferential direction around the axis P. It is composed of The outer diameter r1 of the first damper plate 31, the outer diameter r2 of the second damper plate 32, and the outer diameter r of the third damper plate 33
3 are equal, and the damper holding holes 1
7, which is equivalent to the inner diameter r4. As shown in FIG. 5, the respective damper plate portions 31, 32, 33 of the rotary damper 3 and the spaces 39a, 39b, 39c between the respective damper plate portions 31, 32, 33 are formed around the axis P of the rotary damper 3 by 45%. ° is formed as a reference. The space surrounded by the first damper plate portion 31, the second damper plate portion 32, and the third damper plate portion 33 is a cylindrical damper chamber. Further, as shown in FIG. 2, rotating shafts 36 and 37 are coaxially protruded from an end plate 35 located at an end in the axial length direction of the rotating damper 3. The rotating shafts 36 and 37 are supported by the bearing 1c of the casing 1 so that the rotary damper 3 is connected to the damper holding hole 1 of the casing 1.
7 and is rotatable around the axis P. The rotary shaft 37 of the rotary damper 3 is provided with a servomotor 38. When the servomotor 38 is driven to rotate, the rotary damper 3 rotates in one direction, that is, in the direction of arrow S1. When the servo motor 38 rotates in the reverse direction, the rotary damper 3 rotates in the other direction, that is, in the direction of arrow S2. The rotation angle of the rotary damper 3 is detected by a rotary potentiometer, and its signal is output to a control device, and the control device controls the servomotor 38 according to the signal.

In this embodiment, each of the damper plates 31, 32, 33 of the rotary damper 3 can be set to a bi-level mode, a face mode, and a foot mode. The bi-level mode is a mode in which air is blown from both the foot outlet 15 and the face outlet 14, and is mainly used in spring and autumn. The face mode is a mode in which air is blown only from the face outlet 14, and is mainly used in summer. The foot mode is a mode in which air is blown only from the foot outlet 15, and is mainly used in winter.

Next, a method of using the vehicle air conditioner according to the present embodiment will be described with reference to FIGS. 6A to 6C show the face mode. 6C to 7E show the bi-level mode. FIGS. 7E to 6G show the foot mode. That is, as shown in FIG. 6A, the foot outlet 15 is closed by the first damper plate 31 of the rotary damper 3 (opening ratio 0), and the second
The face outlet 14 is closed by the damper plate part 32 (opening ratio 0), the cold air supply port 11 is closed by the third damper plate part 33 (opening ratio 0), and the hot air supply port 13 is opened by 100% (opening). Ratio 1) Let the state be the initial position.

From this initial position, the rotary damper 3 moves in the direction of the arrow S1.
22.5 ° in the direction. Then, as shown in FIG. 6B, the foot outlet 15 is kept closed by the first damper plate 31 (opening ratio 0), and the face outlet 14, the cold air supply port 11 and the hot air supply port 13 are further provided. Are opened by 50%, resulting in an aperture ratio of 0.5. In the state shown in FIG. 6B, the same amount of the cold air from the cold air supply port 11 and the same amount of the hot air from the hot air supply port 13 are supplied into the damper holding hole 17, and the cold air and the hot air are After being mixed in the holding hole 17, it is blown out from the face outlet 14.

Further, the rotary damper 3 is moved from the initial position by the arrow S.
Rotate 45 ° in one direction. Then, as shown in FIG. 6C, while the foot outlet 15 is closed by the first damper plate portion 31 (opening ratio 0), the face outlet 14 is opened by 100% and the opening ratio becomes 1, and the cool air supply is performed. The opening 11 is 100% open and the opening ratio is 1, and the hot air supply port 13 is connected to the third damper plate 33.
, And the aperture ratio becomes zero. In the state shown in FIG. 6C, the cool air from the cool air supply port 11 is supplied into the damper holding hole 17, and the cool air is blown out from the face outlet 14. At this time, as shown in FIG.
Is closed by the third damper plate 33, hot air is not supplied from the hot air supply port 13 into the damper holding hole 17, but only cool air is supplied from the cold air supply port 11. Therefore, FIG.
(C) shows “MAX COO” in the face mode.
L ”.

Further, the rotary damper 3 is moved from the initial position.
Rotates 67 and 5 degrees in the direction of arrow S1. Then, FIG.
As shown in (d), the foot outlet 15 is 50% open (opening ratio 0, 5), and the face outlet 14 is 50% open.
Opened to an opening ratio of 0.5, the cold air supply port 11 is 50%
The opening is made to have an opening ratio of 0.5. In the state shown in FIG. 6D, the same amount of the cold air from the cold air supply port 11 and the same amount of the hot air from the hot air supply port 13 are supplied into the damper holding hole 17, and the cold air and the hot air are stored in the damper holding hole 17. After being mixed in the hole 17, the same amount is blown out from the foot outlet 15 and the face outlet 14, respectively.

In this embodiment, as can be understood from FIG. 6D showing the bi-level mode, in the bi-level mode, as the rotation of the rotary damper 3 proceeds in the S1 direction, the third damper plate is moved. The part 33 gradually opens the hot air supply port 13 to increase the opening ratio of the hot air supply port 13 and the second
The damper plate portion 32 gradually closes the cold air supply port 11 and the opening ratio of the cold air supply port 11 decreases, and as a result, (the hot air supply port 1
3 / open air supply port 11). Further, as can be understood from FIG. 6D, in the bi-level mode, the first damper plate 31 gradually opens the foot outlet 15 as the rotary damper 3 rotates in the S1 direction, and the foot blowing is performed. As the opening ratio of the outlet 15 increases, the face outlet 14 is gradually closed by the first damper plate 31 and the opening ratio of the face outlet 14 decreases. As a result, (opening ratio of foot outlet 15 / face outlet) 14
(Aperture ratio).

Further, from the initial position, the rotary damper 3 is moved by the arrow S
Rotate 90 ° in one direction. Then, as shown in FIG. 7E, the foot outlet 15 is opened 100% (opening ratio 1), the face outlet 14 is closed by the first damper plate 31, and the opening ratio becomes 0, and the cold air is blown. The supply port 11 is closed by the second damper plate part 32 to have an opening ratio of 0, and the hot air supply port 13 is
An opening ratio of 1 is obtained by opening by 00%. In the state shown in FIG. 7E, the warm air from the warm air supply port 13 is blown out from the foot outlet 15. At this time, as shown in FIG. 7E, since the cool air supply port 11 is closed by the second damper plate 32, no cool air is supplied from the cool air supply port 11 into the damper holding hole 17. Therefore, in FIG. 7E, the state is "MAX HOT" in the foot mode.

Further, from the initial position, the rotary damper 3 is moved by the arrow S
Rotate 112.5 ° in one direction. Then, as shown in FIG. 7 (f), the face outlet 14 is closed by the first damper plate 31 to have an opening ratio of 0, the foot outlet 15 is opened 100% to have an opening ratio of 1, and the cold air supply port is provided. The hot air supply port 11 and the hot air supply port 13 are each opened by 50% to have an opening ratio of 0.5. In the state shown in FIG. 7F, the same amount of the cold air from the cold air supply port 11 and the same amount of the hot air from the hot air supply port 13 are supplied into the damper holding hole 17, and the cool air and the hot air are held in the damper holding hole. After being mixed in the hole 17, it is blown out from the foot outlet 15.

Further, from the initial position, the rotary damper 3 is moved by the arrow S
Rotate 135 ° in one direction. Then, as shown in FIG. 7 (g), the face outlet 14 is closed by the first damper plate portion 31 to have an opening ratio of 0, the foot outlet 15 is opened 100% to have an opening ratio of 1, and the cold air supply port is provided. 11 is 100% open and has an opening ratio of 1, and the hot air supply ports 13 are all closed to have an opening ratio of 0. In the state shown in FIG.
1 is supplied into the damper holding hole 17, and the cool air is blown out from the foot outlet 15. At this time, FIG.
As shown in (g), the hot air supply port 13 is connected to the second damper plate 3.
2, hot air is not supplied from the hot air supply port 13 into the damper holding hole 17. Therefore, FIG.
(G) “MAX COOL” in foot mode
State.

FIG. 3 shows the relationship between the rotation angle of the rotary damper 3 and the ratio of the amount of air blown out from the face outlet 14 and the foot outlet 15 and the relationship between the rotation angle of the rotary damper 3 and the temperature of the blown air. . In FIG. 3, the horizontal axis indicates the rotation angle of the rotary damper 3, and the vertical axis indicates the air volume ratio and the air blowing temperature. In FIG. 3, the area where the rotation angle of the rotary damper 3 is small is the face mode, the area where the rotation angle of the rotary damper 3 is large is the foot mode, and the intermediate area is the bi-level mode.

Here, in the face mode, as shown by the characteristic line A1 in FIG. 3, as the rotation angle of the rotary damper 3 increases, the air volume from the face outlet 14 increases.
Further, as indicated by a characteristic line B1 in FIG. 3, as the rotation angle of the rotary damper 3 increases, the temperature of the air blown from the face air outlet 14 decreases. For example, when the rotation angle of the rotary damper 3 is 0 °, the blowout temperature becomes the point K1 on the characteristic line B1 and is 60 °.
° C. However, at the position (c) where the rotation angle of the rotary damper 3 is 45 °, the blowout temperature becomes a point K2 on the characteristic line B1 and is low. Therefore, at the position (c) described above, the occupant's face is effectively cooled by the cool air from the face outlet 14.

In the bi-level mode, as shown by the characteristic line A2 in FIG. 3, as the rotation angle of the rotary damper 3 increases, the air volume from the face air outlet 14 decreases and the air volume from the foot air outlet 15 decreases. To increase. Further, as shown by the characteristic line B2 in FIG. 3, as the rotation angle of the rotary damper 3 increases, the temperature of the air blown out from the face outlet 14 increases, and as shown by the characteristic line B3 in FIG. The outlet temperature from the outlet 15 increases.

The reason is that in the above-mentioned bi-level mode, as can be understood from the characteristic lines B2 and B3 in FIG. 3, as the rotary damper 3 rotates, (the opening ratio of the hot air supply port 13 / the cold air supply port 11). This is because the value of (opening ratio) becomes large, and warm air increases and cool air decreases. In the bi-level mode, as can be understood from the characteristic line A2 in FIG. 3, the value of (the opening ratio of the foot outlet 15 / the opening ratio of the face outlet 14) increases as the rotary damper 3 rotates, This is because the amount of air blown out from the foot outlet 15 increases and the amount of air blown out from the face outlet 14 decreases.

In the foot mode, in the hatched area A3 in FIG. 3, as the rotation angle of the rotary damper 3 increases, the blowing temperature of the wind decreases as indicated by the characteristic line B4 in FIG. As described above, in the present embodiment, the switching of the foot outlet 15 and the face outlet 14 and the adjustment of the air outlet temperature can be performed with only one rotary damper 3.

Application Example FIG. 8 shows an application example in which the above-described embodiment is applied to an air conditioner for a vehicle in which front and rear seats are independently controlled. In this example, the foot outlet 15 and the face outlet 14 are for a rear seat. The casing 1 is formed with a foot outlet 55 and a face outlet 54 for a front seat. The opening ratio of the foot outlet 55 for the front seat is adjusted by swinging the plate door type opening / closing damper 56. Further, the opening ratio of the face outlet 54 for the front seat is adjusted by swinging the plate door type opening / closing damper 57.

In this example, the ratio between the amount of air sent to the front seat side and the amount of air sent to the rear seat side is adjusted by swinging of the air mix door 50 held near the heater core 20. Also in this example, as described above, as the rotary damper 3 rotates in the damper holding hole 17, the value of (opening ratio of the hot air supply port 13 / opening ratio of the cold air supply port 11) increases, and (Aperture ratio of foot outlet 15 / face outlet 14
(Aperture ratio). Therefore, by the rotation of the rotary damper 3, the amount of air blown out from the foot outlet 15 and the face outlet 14 for the rear seat can be adjusted, and the outlet temperature can be adjusted.

Modification As a modification, a seal portion may be interposed between the inner wall surface 17a defining the damper holding hole 17 of the casing 1 and the rotary damper 3. In this case, the rotary damper 3
Inner wall surface 17 that partitions damper holding hole 17 of casing 1
Even if the dimensional accuracy of “a” is lowered, it is advantageous to avoid the air leakage from between the inner wall surface 17 a defining the damper holding hole 17 and the rotary damper 3. In this case, for example, the structure shown in FIG. 9 can be obtained. That is, as shown in FIG.
A suitable number of rubber seal portions 6 having a triangular cross section are held on an inner wall surface 17a that defines the damper holding hole 17. The means for holding the seal portion 6 can be appropriately selected. For example, means for bonding the seal portion with an adhesive, means for holding the seal portion 6 with screws, means for holding the seal portion 6 with concave and convex fit, and the like can be employed.

Although not shown, a fixed lubricant layer such as a fluororesin coating layer may be laminated on at least one of the inner wall surface 17a defining the damper holding hole 17 of the casing 1 and the rotary damper 3. In this way, the rotation of the rotary damper 3 can be more smoothly performed by the fixed lubricant layer.

[0031]

In the vehicle air conditioner according to the present invention, in the bi-level mode, the value of (open ratio of hot air supply port / opening ratio of cold air supply port) increases as the rotary damper rotates in one direction. In addition, since the value of (opening ratio of foot outlet / opening ratio of face outlet) is increased, the amount of air blown out from the foot outlet and face outlet can be adjusted, and the outlet temperature can be adjusted. That is,
With only one rotary damper, it is possible to switch between the foot outlet and the face outlet, and to adjust the air outlet temperature.

[Brief description of the drawings]

FIG. 1 is a sectional view of an air conditioner according to an embodiment.

FIG. 2 is a cross-sectional view of a main part of the air conditioner according to the embodiment, taken along an axial direction of a rotary damper.

FIG. 3 is a graph showing a relationship between a rotation angle of a rotary damper and a flow rate of air blown from a face outlet or a foot outlet, and a relationship between a rotation angle of the rotary damper and a blowout temperature.

FIG. 4 is a sectional view of the vicinity of a damper holding hole of a casing.

FIG. 5 is a side view of the rotary damper.

FIGS. 6A to 6D are cross-sectional views illustrating an operation state.

FIGS. 7 (e) to 7 (g) are cross-sectional views illustrating an operation state.

FIG. 8 is a sectional view of an application example.

FIG. 9 is a sectional view of a main part according to a modification.

FIG. 10 is a configuration diagram of a conventional device.

[Explanation of symbols]

In the figure, 1 is a casing, 11 is a cool air supply port, 13 is a hot air supply port, 14 is a face outlet, 15 is a foot outlet,
17 is a damper holding hole, 3 is a rotary damper, 31 is a first damper plate, 32 is a second damper plate, and 33 is a third damper plate.

Claims (1)

(57) [Claims] 1. A cold air supply port for supplying cold air, a hot air supply port for supplying hot air, a face outlet from which air sent to a person's face blows, and an air blown to a person's foot blows out. A casing having a foot outlet, and having the cold air supply port, the hot air supply port, the face outlet, and a damper holding hole facing the foot outlet, having a shaft core, and holding a damper of the casing; The hole has a plurality of damper plate portions which are rotatably held around the axis and are intermittently arranged at predetermined intervals along a circumferential direction around the axis. A hot air supply port, a rotary damper for opening and closing the face outlet and the foot outlet, and each damper plate portion of the rotary damper opens both the foot outlet and the face outlet. It can be set to bi-level mode to send air from both sides In the bi-level mode, the value of (opening ratio of the hot air supply port / opening ratio of the cold air supply port) increases with the progress of rotation of the rotary damper in one direction, and An air conditioner for a rotary type vehicle, wherein a value of (opening ratio of the foot outlet / opening ratio of the face outlet) is set to be large.