JPH10226220A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centrally mounted air conditioner capable of making the operating force uniform when controlling a FACE door in all air-outlet-mode changeover patterns. SOLUTION: Formed inside an air conditioning duct 4 of a centrally mounted air conditioner 1 are, a first air passage 21 in which the cold air passed an evaporator is forced through a blow-off temperature control device, a first through-port 23 and through to an air duct 24 located immediately behind a FACE opening 12, and a second air passage 22 in which the cold air passed an evaporator is forced through a cold air passage 25, a second through-port 26 and through to an air duct 24 immediately behind the FACE opening 12. Further, a cold air door 34 which opens or closes the cold air passage 25, is provided in addition to a grille door adjacent to the FACE opening 12 so that when the cold air passage 25 is closed using a FACE door 31, the cold air door 34 is first closed then the FACE door 31 is closed to close the cold air passage 25.

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 vehicle in which the operation timings of an air outlet mode switching door for switching an air outlet and a cold air door for opening and closing a cold air passage are shifted.

[0002]

2. Description of the Related Art Conventionally, as shown in, for example, FIG. 10, an evaporator (not shown) of a refrigeration cycle and a center-mounted air-conditioning unit 100 in which a heater core 101 is disposed in the front-rear direction of a vehicle make the interior of the vehicle compartment. 2. Description of the Related Art There is an air conditioner for a vehicle (hereinafter, referred to as a conventional technique) that is air-conditioned. And the center-placed air conditioning unit 100
A blower (not shown) that generates an air flow is provided at an upstream end of the air conditioning duct 102.

In addition, a center-mounted air conditioning unit 100
A face (FAC)
E) Upper outlet such as outlet 103 and defroster (DEF) outlet (not shown), and foot (FOOT) outlet 1
04 etc. are formed. In the air-conditioning duct 102, an air outlet temperature control device including a heater core 101, an air mix door 105, and an air mix unit 106, and an air outlet mode switching of a FACE door 107, a DEF door (not shown), a FOOT door 108, and the like. A door is provided. The opening and closing of the outlet mode switching door is performed by operating an outlet mode switching lever of an operation panel provided on the front surface of the vehicle interior.

[0004] In the prior art, when the outlet mode is a foot mode, a foot differential mode or a defroster mode, in order to suppress hot flashes of the occupant's face of the vehicle, the cool air that has passed through the evaporator is applied to the FACE outlet 10.
A cool air passage 110 is provided in the air conditioning duct 102 so as to blow out from 3 toward the occupant's head and chest. Then, the cold air that has passed through the evaporator is blown out to the air conditioning duct 102 by a temperature control device (air mixing unit 106).
1st passage 111 → FAC flowing like ventilation path 109
A first air passage leading to the E outlet 103 and a second air passage leading cool air to the FACE outlet 103 by flowing cold air in the order of the cold air passage 110 → the second passage opening 112 → the ventilation passage 109 are formed. In the related art, the opening of the cold air passage 110 is adjusted by manually adjusting the opening of the grill door 113 provided near the FACE outlet 103.

[0005]

However, in the prior art, the FACE door 107 fully closes the first passage 111 and the FOOT door 108 fully opens the FOOT outlet 104 (FIG. 10). (Refer to the solid line position)
When the grill door 113 is closed in a state where the outlet mode is set to the blower and the blower is operating, as shown by the broken line arrow in FIG. There is no escape place for the air that has flowed into the passage 109, and the internal pressure (P2) of the ventilation passage 109 becomes extremely higher than the internal pressure (P1) of the air mix section 106 on the side where the FOOT outlet 104 is open. .

At this time, by operating the outlet mode switching lever, the FOOT mode is switched to the F mode.
The ACE door 107 fully closes the second passage 112, and the FOO
FAC where T-door 108 fully closes FOOT outlet 104
When switching the outlet mode to the E mode (see the dashed-dotted line position in FIG. 10), the internal pressure of the ventilation passage 109 on the side where the FACE door 107 shifts is higher than the internal pressure of the air mix unit 106. There is a problem that the operation force of the switching lever becomes extremely large. That is, in the related art, when the operation load of the outlet mode switching lever and the link mechanism when operating the outlet mode switching door becomes extremely large at some points, the switching patterns of all the outlet modes are changed. , There is a problem that it is not possible to equalize the operation load when operating the outlet mode switching door.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air conditioner for a vehicle which can reduce an operation load when operating a first passage opening / closing door in all opening / closing patterns of an air passage. Another object of the present invention is to provide an air conditioner for a vehicle which can equalize the operation load when operating the outlet mode switching door in all the outlet mode switching patterns.

[0008]

According to the first aspect of the present invention, when the first air passage is opened and the second air passage is closed by the first passage opening / closing door, the second passage opening / closing door is used. After closing the second air passage, the operation timing of the first passage opening and closing door and the operation timing of the second passage opening and closing door are shifted so that the first passage opening and closing door closes the second air passage. Thereby, even if the second air passage is closed by the first passage opening / closing door when the internal pressure of the ventilation passage is higher than the internal pressure of the first air passage, the operation load is smaller than that of the first passage opening / closing door. By closing the second air passage with the second passage opening / closing door, the internal pressure of the ventilation passage approaches the internal pressure of the first air passage, so that the first passage opening / closing door does not require a large operating force. 2 The air passage can be closed. Therefore, the operating force of the opening / closing door operating means when the first air passage is opened by the first passage opening / closing door and the second air passage is closed can be reduced.

According to the second aspect of the present invention, the second air passage is closed by the first passage opening / closing door, the first air passage is opened, and the second air passage is closed by the second passage opening / closing door. In this case, the air flowing in the air conditioning duct flows into the ventilation path from the first air passage after the temperature is adjusted by the temperature control means, and is blown out from the upper outlet to the upper side in the vehicle compartment. . Further, when the first air passage is closed by the first passage opening / closing door and the second air passage is opened, and the second air passage is opened by the second passage opening / closing door, the air flowing through the air conditioning duct is 2 The air flows into the ventilation passage from the air passage and is blown out from the upper outlet to the upper side in the vehicle compartment of the vehicle. According to the second aspect of the invention, the same effect as the first aspect of the invention can be obtained.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

1 to 9 show an embodiment of the present invention. FIGS. 1 and 2 show the main structure of a ventilation system of a manual air conditioner. FIGS. 3 and 4 show a manual air conditioner. FIG. 5 is a diagram illustrating an entire configuration of a ventilation system of an air conditioner, and FIG. 5 is a diagram illustrating an instrument panel of a vehicle.

In this embodiment, each air-conditioning means in a center-installed air-conditioning unit (hereinafter, abbreviated as air-conditioning unit) 1 for air-conditioning a vehicle interior of a vehicle in which an engine is mounted in an engine room provided on the front side of the vehicle is provided in the vehicle interior. A manual air conditioner configured to operate according to the operation amount of each lever on the operation panel 2 (see FIG. 7) provided on the front surface is employed.

As shown in FIGS. 3 and 4, the air-conditioning unit 1 includes an evaporator (refrigerant evaporator) 5 and a heater core 6 arranged in tandem in an air-conditioning duct 4 connected to the downstream side of the centrifugal blower 3. It is arranged. The centrifugal blower 3
It comprises a centrifugal fan 7 for generating an airflow toward the vehicle interior, and a blower motor (not shown) for driving the centrifugal fan 7 to rotate. In addition, on the upstream side of the centrifugal blower 3, an outside air introduction mode in which outside air (outside air) is introduced from an outside air suction port (not shown), and vehicle interior air (inside air) from inside air suction port (not shown). An inside / outside air switching box (not shown) accommodating an inside / outside air switching door (not shown) for switching between the inside air circulation mode to be introduced is connected.

The evaporator 5 is a cooling heat exchanger that is disposed so as to close the air passage of the air conditioning duct 4, cools the air passing therethrough, and constitutes a part of a refrigeration cycle mounted on a vehicle. is there. The refrigeration cycle is
The compressor includes a compressor (refrigerant compressor), a condenser (refrigerant condenser), a receiver (gas-liquid separator), an expansion valve (decompression means), and an evaporator 5. Among them, the compressor is connected to an electromagnetic clutch for interrupting the rotational power transmitted from the engine to the compasser. When the electromagnetic clutch is energized, the air cooling of the evaporator 5 is performed.

The heater core 6 is a heating heat exchanger for reheating the cold air cooled by the evaporator 5 using the cooling water of the engine as a heat source for heating. Above the heater core 6 in the figure, a bypass passage 8 is provided to allow the cool air to bypass the heater core 6. A rotary shaft 9 is provided on the air upstream side of the heater core 6 so as to be rotatable with respect to the air conditioning duct 4. A plate-shaped air mix door 10 for adjusting the amount of air passing through the heater core 6 and the amount of air passing through the bypass passage 8 is integrally connected to the rotating shaft 9. The rotating shaft 9 is connected to a link mechanism (not shown) as door driving means. An air mixing section 11 is provided downstream of the heater core 6 for mixing hot air passing through the heater core 6 and cold air passing through the bypass passage 8. Note that a blowout temperature control device (corresponding to a temperature control unit of the present invention) that controls the blowout temperature of the air blown into the vehicle cabin from the heater core 6, the bypass passage 8, the air mix door 10, and the air mix section 11 is configured.

At the downstream end of the air conditioning duct 4, a face (FACE) opening 12, a defroster (DEF) opening 13, and a foot (FOOT) opening 14 are formed. A center face duct 15 and a side face duct (not shown) are connected to the FACE opening 12. Among them, the conditioned air introduced into the center face duct 15 is directed toward the head and chest of the occupant of the vehicle from a center face (FACE) outlet (see FIG. 5) 16 which is a downstream end of the center face duct 15. The conditioned air blown out and introduced into the side face duct is blown out from a side face (FACE) outlet (see FIG. 5) 17 which is a downstream end of the side face duct, toward the inner surface of the side glass of the vehicle. .

The center FACE outlet 16 is a portion corresponding to the upper outlet of the present invention. Also, the center F
Near the ACE outlet 16 and the side FACE outlet 17, there are provided grille doors (not shown) for the vehicle occupant to manually open and close the center FACE outlet 16 and the side FACE outlet 17, respectively.
The air inflow passages to the E outlet 16 and the side FACE outlet 17 are also opened and closed by the grill door.

The DEF opening 13 is connected to the FACE opening 12
And a defroster duct (not shown) connected thereto, and the air-conditioned air introduced into the defroster duct receives a defroster (DEF) outlet at the downstream end of the defroster duct (see FIG. 5). From 18, it is blown out toward the inner surface of the windshield of the vehicle. Also, FOO
The T opening 14 is provided on the front surface on the downstream side of the air conditioning duct 4 and is connected to a foot duct (not shown). The conditioned air introduced into the foot duct is blown out from a foot (FOOT) outlet (not shown), which is a downstream end of the foot duct, toward the feet of the occupant of the vehicle. The FOOT outlet is a portion corresponding to the lower outlet.

In the air conditioning duct 4, a first air passage 21 and a second air passage 22 are formed immediately after the evaporator 5 and up to the FACE opening 12. The first air passage 21 is provided with the evaporator 5
Immediately after the outlet temperature control means (air mixing unit 11) →
1st passage 23 → ventilation passage 2 immediately before FACE opening 12
It is a temperature control passage up to 4. Also, the second air passage 22
Immediately after the evaporator 5, the cool air passage 25 → the second passage 2
6 → A cool air bypass passage from the air passage 24 to the ventilation passage 24. In addition,
The first passage opening 23 is an opening through which air passes, which is formed in a partition wall 27 that partitions the air mix section 11 and the ventilation path 24. The second passage opening 26 is an opening through which air passes, which is formed on a partition wall 28 that separates the cool air passage 25 and the ventilation passage 24. The cool air passage 25 is formed between the outer wall 29 having a substantially U-shaped cross section and the partition wall 28, and the cool air that has passed through the evaporator 5 is bypassed from the blow-out temperature control means to provide a ventilation passage. 24 is an air passage leading to 24.

The FACE opening 12, DE
On the upstream side of the F opening 13 and the FOOT opening 14,
FACE door 31, defroster (DEF)
An outlet mode switching door including a door 32, a foot (FOOT) door 33, and a cold air door 34 is provided.
The FACE door 31 is a component corresponding to the first passage opening / closing door of the present invention, and is provided integrally with a rotating shaft 35 rotatably supported by the air conditioning duct 4 on the side of the ventilation passage 24 of the partition wall 27. I have. The FACE door 31 is a plate-like door that opens and closes the first air passage 21 and the second air passage 22 by selectively opening and closing the first passage opening 23 and the second passage opening 26.

The DEF door 32 is a plate-like door for adjusting the opening of the DEF opening 13, and is provided integrally with a rotating shaft 36 rotatably supported by the air conditioning duct 4.
The FOOT door 33 is a plate-like door that adjusts the degree of opening of the FOOT opening 14, and is provided integrally with a rotating shaft 37 that is rotatably supported by the air conditioning duct 4. And
A packing for improving the sealing property is bonded to both surfaces of each of the doors 31 to 33 with an adhesive or the like.

The cold air door 34 is a component corresponding to the second passage opening / closing door of the present invention, and is integrally formed on a rotating shaft 38 rotatably supported by the air conditioning duct 4 on the cold air passage 25 side of the partition wall 28. Is provided. A packing for improving the sealing property is bonded to the side surface of the second passage opening 26 of the cool air door 34 by an adhesive or the like. The cold air door 34 is a plate-like door that opens and closes only the second air passage 22 by opening and closing the second passage opening 26. In addition,
Since the cold air door 34 is provided such that the door portion on the distal end side is more outwardly curved than the door portion on the rotating shaft 38 side, when the second passage opening 26 is closed, the packing is greatly collapsed. It comes into contact with the partition wall 28.

The doors 31 to 34 are connected by a link mechanism shown in FIG. This link mechanism is a component corresponding to the opening / closing door operating means of the present invention,
Main link plate 41, first intermediate link plate 4
2, a first link plate 43, a second intermediate link plate 44, a second link plate 45, and the like. The main link plate 41 is rotatably supported on the outer wall surface of the air conditioning duct 4 about a fulcrum, and is driven via a cable 46 by an outlet mode switching lever of the operation panel 2 described later. The main link plate 41 is also connected with a link plate (neither is shown) for driving the DEF door 32 or the FOOT door 33.

The first intermediate link plate 42 is rotatably supported on the outer wall of the air conditioning duct 4 about a fulcrum. On one end side of the first intermediate link plate 42,
A connecting pin 42a connected to the main link plate 41 via a connecting rod (not shown) is provided, and an engaging pin 47 is provided on the other end. The first link plate 43 rotates integrally with the rotation shaft 35 of the FACE door 31 and is supported rotatably about the axis of the rotation shaft 35. A guide groove 48 in which the engaging pin 47 of the first intermediate link plate 42 slides is formed at one end of the first link plate 43, and the other end is fixed to the rotating shaft 35.

The lever ratio of the FACE door 31 is
That is, the fulcrum of the main link plate 41 and the cable 4
6 with respect to the distance A between the connecting portion of the first intermediate link plate 42 and the first connecting portion (the connecting pin 42a) of the first intermediate link plate 42.
The sum of the distance B1 between the fulcrum of the intermediate link plate 42, the distance B2 between the fulcrum and the coupling portion (engaging pin 47), and the distance B3 between the coupling portion of the first link plate 43 and the axis of the rotary shaft 35. When the ratio is the maximum value, for example, it is 2.49 (see FIG. 9).

The second intermediate link plate 44 is rotatably supported on the outer wall surface of the air conditioning duct 4 about a fulcrum. On one end side of the second intermediate link plate 44,
A connection pin 44a connected to the main link plate 41 via a connection rod (not shown) is provided, and an engagement pin 44b is provided on the other end. The second link plate 45 rotates integrally with the rotation shaft 38 of the cool air door 34 and is supported rotatably about the axis of the rotation shaft 38. Then, the second link plate 45
On one end side, a guide groove 45a is formed in which the engaging pin 44b of the second intermediate link plate 44 slides, and the other end side is fixed to the rotating shaft 38.

The ratio of the lever of the cold air door 34, that is, the distance A between the fulcrum of the main link plate 41 and the connecting portion of the cable 46, corresponds to the second intermediate link plate 4
4, the distance C1 between the connecting portion of the connecting rod (connecting pin 44a) and the fulcrum of the second intermediate link plate 44, the distance C2 between this fulcrum and the connecting portion (engaging pin 44b), and the connection of the second link plate 45 C between the shaft and the axis of the rotating shaft 38
When the ratio of the sum of 3 is the maximum value, it is set to, for example, 2.75 (see FIG. 9).

Next, the operation panel 2 of the present embodiment will be described with reference to FIGS. Here, FIG. 7 is a diagram showing the operation panel 2 of the manual air conditioner. The operation panel 2 is located at the center FACE of the instrument panel.
It is provided below the outlet 16. The operation panel 2 is provided with an air conditioner switch 51, an air volume switching lever 52, a suction port mode switching lever 53, a temperature adjustment lever 54, and an outlet mode switching lever 55.

Of these, the outlet mode switching lever 55
Is a component corresponding to the opening / closing door operating means of the present invention. When the outlet mode switching lever 55 is sequentially operated from the left end in the drawing to the right end in the drawing of FIG. By rotating each phosphorus plate by rotating 41 around the fulcrum A, FIG.
As shown in FIG.
E) mode, bi-level (B / L) mode, foot (F
OOT) mode, foot differential (F / D) mode, and defroster (DEF) mode.

In the FACE mode, the FACE door 31 is closed (at the dashed line position in FIG. 1) S (the second passage opening 26), the DEF door 32 is closed (the DEF opening 13), and the FOOT door is closed. 33 (of the FOOT opening 14)
The closing position (indicated by a dashed line in FIG. 1) and the closing position of the cold air door 34 (in the second passage opening 26) (indicated by dashed line in FIG. 1).
S is an outlet mode in which the cool air is blown mainly toward the head and chest of the occupant of the vehicle by operating S. The B / L mode is a position where the FACE door 31 is slightly opened, the DEF door 3
2 to the closed position, the FOOT door 33 to the open position (solid line position in FIG. 1), and the cold air door 34 to the closed position (dotted line position in FIG. 1) S to mainly supply the cool air to the head and chest of the occupant of the vehicle. This is an outlet mode in which the hot air is blown out toward the feet of the occupant of the vehicle.

The FOOT mode means that the FACE door 31 is in the open position (solid line position in FIG. 1) O, the DEF door 3
2 is opened slightly, the FOOT door 33 is opened (solid line in FIG. 1) and the cold air door 34 is opened slightly, so that about 80% of the conditioned air is directed toward the feet of the occupants of the vehicle. In this mode, about 20% of the conditioned air is blown out toward the inner surface of the windshield. In the F / D mode, the FACE door 31 is in the open position (solid line position in FIG. 1) O, the DEF door 32 is slightly opened, the FOOT door 33 is in the open position (solid line position in FIG.
4 is an opening mode in which the conditioned air is blown to the foot portion of the occupant of the vehicle and the inner surface of the windshield by operating the air conditioner 4 to the open position (the solid line position in FIG. 1) O.

Further, the DEF mode means that the FACE door 31 is in the open position (the position indicated by the solid line in FIG.
By operating the FOOT door 33 to the open position, the FOOT door 33 to the closed position (the dashed line position in FIG. 1) and the cold air door 34 to the open position (the solid line position in FIG. 1) to blow the conditioned air toward the inner surface of the windshield. Exit mode. Here, in the above description, the operating state of the FACE door 31 in each outlet mode is based on the open / closed state of the second passage 26. However, the operating state of the FACE door 31 in each outlet mode is referred to as FACE opening. Based on the open / closed state of the part 12 and the first passage 25,
The closed position is an open position, and the open position is a closed position.

[Operation of Embodiment] Next, the operation of the center-position air-conditioning unit 1 of this embodiment will be briefly described with reference to FIGS.

When the occupant of the vehicle sets the air outlet mode switching lever 55
Is operated around the fulcrum of the main link plate 41 via the cable 46 when the is operated to the DEF mode position. Thereby, the rotating shaft 35 is connected via each link plate.
When the FACE door 31 is in the second position
An opening position for opening the passage 26, that is, the first passage 23
Is driven to a closing position (solid line position in FIG. 1) O for closing
The DEF door 32 is driven to an open position to open the DEF opening 13. Further, the FOOT door 33 is driven to a closing position (a dashed line position in FIG. 1) for closing the FOOT opening 14, and the cold air door 34 is opened to open the second passage opening 26, that is, opened to open the cold air passage 25. Location (Figure 1
(Solid line position).

Therefore, the air sucked into the air conditioning duct 4 by the operation of the centrifugal blower 3 is supplied to the evaporator 5.
To cool the air. Then, the amount of air passing through the heater core 6 is adjusted according to the degree of opening of the air mix door 10, and the cool air is mixed in the air mix unit 11 to become an appropriate temperature conditioned air from the DEF opening 13 into the defroster duct. be introduced. Then, the conditioned air introduced into the defroster duct is blown out from the DEF outlet 18 toward the inner surface of the windshield of the vehicle, so that the windshield is prevented from fogging and icing is removed.

At this time, when the occupant of the vehicle manually opens the grill door near the center FACE outlet 16 in order to suppress hot flashes, a part of the cool air cooled by the evaporator 5 is dissipated in the second air passage 22. Introduced to the cold air passage 2
5 → the second passage 26 → the inside of the ventilation path 24. Then, the cool air introduced into the ventilation passage 24 is introduced into the face duct from the FACE opening 12, and is blown out from the center FACE outlet 16 toward the head and chest of the occupant of the vehicle.
The hot flash of the occupant's face is suppressed.

If the occupant of the vehicle feels cold due to the cold air blown out from the center FACE outlet 16 or the side FACE outlet 17, the grill door is manually closed to open the center FACE outlet 16 and the side FACE outlet. The blowing of cold air from the FACE outlet 17 is eliminated. Then, when the operation of the centrifugal blower 3 is continued, there is no escape place for the air that has flowed into the ventilation passage 24 from the cold air passage 25 through the second passage opening 26, as indicated by the dashed arrow in FIG. The internal pressure (P1) of the air mix unit 11 on the side where the DEF outlet (DEF opening 13) is open
), The internal pressure (P2) of the ventilation passage 24 on the side where the center FACE outlet 16 and the side FACE outlet 17 (FACE opening 12) are closed becomes extremely high.

In the above state, the occupant of the vehicle moves the outlet mode switching lever 55 from the DEF mode position to FACE.
When the operation is performed to the mode position, the rotation is performed about the fulcrum of the main link plate 41 via the cable 46. At this time, the cool air door 34 is set to the open position (solid line position in FIG. 1) O from the DEF position to the F / D position as shown in FIG.
During the operation from the position D to the FOOT position (point D), the shutter starts to close, and before the B / L mode position (point A), the closing position (the dashed line position in FIG. 1) S is reached. Maintained in the closed position.

On the other hand, as shown in FIG. 8, the FACE door 31 is set to the open position (solid line position in FIG. 1) O from the DEF position to the FOOT position when the outlet mode switching lever 55 is in the FOOT position. Starts to close from the point (point C) after passing through, and becomes the closed position (the position indicated by the one-dot chain line in FIG. 1) S after the B / L mode position (point B), and maintains this closed position until the FACE mode position. Is done. That is, when the outlet mode switching lever 55 is operated from the DEF mode position to the FACE mode position,
The link mechanism is configured such that when the operation of closing the (cool air passage 25) is performed, the cool air door 34 is closed earlier than the FACE door 31.

Therefore, the outlet mode switching lever 55
When the grill door closes the center FACE outlet 16 and the side FACE outlet 17 when switching from the DEF mode to the FACE mode as described above, the internal pressure of the ventilation passage 24 is reduced by the air pressure. Although the pressure is higher than the internal pressure of the mixing section 11, the pressure in the ventilation path 24 escapes by closing the FACE door 31 later than the cold air door 34,
Since the internal pressure of the ventilation passage 24 approaches the internal pressure of the air mixing unit 11, the operation force of the outlet mode switching lever 55 and the link mechanism is reduced.

[Effects of the Embodiment] As described above, the air-conditioning unit 1 according to the present embodiment adds the cold-air door 34 for opening and closing the cold-air passage 25 separately from the grille door.
By moving the FACE door 31 from the open position to the closed position by moving the FACE door 31 from the open position to the closed position by moving the FACE door 31 together with the FACE door 31,
The effect of pressure from the pressure can be reduced. By that, FA
Air outlet mode switching lever 5 when operating CE door 31
5, the operation load of the link mechanism does not increase at any point. Therefore, in all the outlet mode switching patterns, the outlet mode switching door, especially the FACE door 31
It is possible to achieve a uniform operation load when operating.

Here, ideally, from DEF mode to F
Taking the switching to the ACE mode as an example, the cold air door 34
It is most preferable to completely close the second passage opening 26 (the cold air passage 25) before the FACE door 31 starts to close, but the FACE door 31 is delayed with respect to the movement of the cold air door 34 in the closing direction. If moved, there is also an effect of pressure relief, and the lever ratio of the FACE door 31 is currently 7.0.
Can be reduced to 2.75 (the lever ratio is desirably 3.0 or less). Thus, the operation force of the outlet mode switching lever 55 can be reduced.

[Other Embodiments] In this embodiment, the outlet mode switching door is moved via the link mechanism by the outlet mode switching lever 55. However, the outlet mode switching door (first and second passages) is used. The opening / closing door may be moved via a link mechanism by an actuator such as a servomotor.

The movement of the cold air door 34 with respect to the FACE door 31 can be freely changed as long as it is within the range surrounded by the dashed line in FIG. That is, the cool air door 34 may be in the open position when the outlet mode is the F / D mode, and may be in the closed position when the outlet mode is the B / L mode.

In this embodiment, an air-mixing type temperature control system is used as the blowout temperature control device (temperature control means). However, a reheat type temperature control system may be used as the blowout temperature control device. Further, the evaporator 5 may be omitted.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a main configuration of a ventilation system of a manual air conditioner (embodiment).

FIG. 2 is a schematic diagram showing a main configuration of a ventilation system of a manual air conditioner (embodiment).

FIG. 3 is a schematic diagram showing an entire configuration of a ventilation system of a manual air conditioner (embodiment).

FIG. 4 is a sectional view taken along line XX of FIG. 3 (embodiment);

FIG. 5 is a front view showing an instrument panel of the vehicle (embodiment).

FIG. 6 is a plan view showing a link mechanism of the outlet mode switching door (embodiment).

FIG. 7 is a front view showing an operation panel of the manual air conditioner (embodiment).

FIG. 8 is an explanatory diagram showing an opening degree of a FACE door and a cool air door with respect to each outlet mode (embodiment).

FIG. 9 is an explanatory diagram showing a lever ratio between the FACE door and the cool air door for each outlet mode (embodiment).

FIG. 10 is a schematic diagram showing a main configuration of a ventilation system of a center-installed air conditioning unit (prior art).

[Explanation of symbols]

 Reference Signs List 1 air conditioning unit 2 operation panel 4 air conditioning duct 6 heater core (temperature control means) 8 bypass passage (temperature control means) 10 air mix door (temperature control means) 11 air mix section (temperature control means) 12 FACE opening 13 DEF opening 14 FOOT opening 16 Center FACE outlet (upper outlet) 17 Side FACE outlet 21 First air passage 22 Second air passage 23 First passage 24 Ventilation passage 26 Second passage 31 FACE door (first passage opening / closing) Door) 32 DEF door 33 FOOT door 34 Cold air door (second passage opening / closing door) 35 Rotating shaft 55 Air outlet mode switching lever (opening / closing door operating means)

Claims (2)

[Claims] (A) an air conditioning duct for sending air into a passenger compartment of a vehicle; (b) temperature control means for adjusting a temperature of air flowing through the air conditioning duct; and (c) downstream of the air conditioning duct. (D) a first air passage that guides the air flowing through the air conditioning duct to the air passage by passing the air through the air conditioning duct; (E) a second air passage for guiding the air flowing through the air conditioning duct to the ventilation path by bypassing the temperature control means; and (f) selectively selecting the first air passage and the second air passage. (G) a second passage opening / closing door that opens and closes only the second air passage; and (h) a second passage opening and closing the first air passage by the first passage opening / closing door. When closing the air passage, the second passage opening / closing door causes the second air passage. Opening / closing door operating means for operating the first passage opening / closing door and the second passage opening / closing door so as to close a road; and wherein the opening / closing door operating means is provided by the first passage opening / closing door by the first air passage. When opening the second air passage and closing the second air passage by the second passage opening and closing door, the second air passage is closed by the first passage opening and closing door. An air conditioner for a vehicle, wherein a first passage opening / closing door and the second passage opening / closing door are operated. 2. The vehicle air conditioner according to claim 1, wherein an upper outlet for blowing air toward an upper side in a vehicle compartment of the vehicle is opened at a downstream end of the ventilation path. Vehicle air conditioner.