JP4356474B2 - Air conditioner - Google Patents

Description

  The present invention relates to a door link means that is opened and closed in a duct of an air conditioner, and relates to a door link means that needs to maintain a predetermined opening against an external force such as wind pressure.

[Conventional technology]
Conventionally, in doors that are opened and closed in ducts of air conditioners, in particular in air conditioners for vehicles that are mounted in vehicles and air-condition the vehicle interior, the opening degree of the doors for blowing air out of the duct into the vehicle interior is limited. In order to control, the link means comprised by a pin fitting in a slide groove is used. Such link means maintain the target opening and reduce its variation when the door is subjected to wind pressure due to deflection, twisting, rattling of the slide groove and pin, etc. It ’s difficult.

  When the target opening is large, the effect of the variation on basic performance (air volume ratio, temperature controllability, etc.) is small, but when the target opening is small, the influence of the wind pressure is large and the door receives a large force in the closing direction. . For this reason, in the conventional link means, each member bends due to the wind pressure, and the door cannot be maintained at the target opening and is closed in the worst case. In addition, since the opening is extremely small even if it is not fully closed, the opening is different from the target opening, so that the target basic performance cannot be satisfied and abnormal noise such as wind noise is generated.

  In order to prevent such a problem, a method of directly connecting an actuator such as a servo motor to a door without using a link means having a conventional pin-groove fitting structure, and controlling the door and the actuator one-to-one, A method of forming a wind leak hole by forming a door that requires a very small opening in a rotary shape (for example, see Patent Document 1) is considered.

[Problems with conventional technology]
However, in the method of controlling the door and the actuator on a one-to-one basis, an actuator is required for each door, so there is a problem in terms of space and cost. Further, even in the method described in Patent Document 1, the shape of the door is not a simple plate shape but a rotary shape, and it is necessary to separately manufacture and process a wind leak hole, and the shape of the duct becomes complicated.
JP 2000-52758 A (2nd page, FIG. 1 and FIG. 2)

  The object of the present invention is to enable the door to be driven against an external force such as wind pressure regardless of the state of the link means, even if it is a plate-like door that is rotationally driven by the link means having a conventional pin-groove fitting structure. An object of the present invention is to provide an air conditioner capable of maintaining the opening degree at a predetermined opening degree.

[Means of Claim 1]
The air conditioner according to claim 1 is a duct in which a first air passage and a second air passage through which air passes are formed, and a plate that is rotatably supported by the duct and opens and closes the first air passage. First door, a first link means that is mechanically connected to the first door, and rotates the first door so that the opening degree of the first door becomes a predetermined opening degree, and the duct rotates. A plate-like second door that is freely supported and opens and closes the second air passage, and is mechanically connected to the second door, so that the second door has a predetermined opening. A second link means for rotationally driving the door; a restraining means provided on one of the first link means or the second link means for restraining the first door at a predetermined opening; a first link means and a second link; And a main link that links the means.

Further, when the main link is driven, the first door and the second door are rotationally driven, and the restraining means engages a recessed locked portion provided on the other of the first link means or the second link means. It is a convex locking part that stops. When the main link is driven within a predetermined range, the locking portion locks the locked portion and restrains the first door to a predetermined opening.

Thereby, in the air conditioner having the first and second doors, the first door can be restrained by using the restraining means, so that the opening degree of the first door can be set regardless of the state of the first and second link means. The predetermined opening can be maintained.
  Further, the first door can be restrained by a simple uneven structure.

[Means of claim 2 ]
According to the air conditioner of the second aspect , the predetermined opening is a rotation angle from the fully closed state to a rotation angle when the first door rotates from the fully closed state to the fully open state. The ratio is 25% or less .
When the ratio of the rotational angle from the fully closed state to the rotational angle when the first door rotates from the fully closed state to the fully open state is 25% or less, the influence of the wind pressure is large. For this reason, the first door receives a large force in the closing direction, cannot maintain the target opening, and closes in the worst case. In addition, since the opening is extremely small even if it is not fully closed, the opening is different from the target opening, so that the target basic performance cannot be satisfied and abnormal noise such as wind noise is generated.
Even in such a case, the first door can be restrained and maintained at a predetermined opening degree.

[Means of claim 3 ]
Air conditioning apparatus according to claim 3 is the vehicle air-conditioning system for air-conditioning the passenger compartment is mounted on the vehicle, the first door when the face mode for blowing primarily cool air toward the passenger's head chest in the cabin The second door is a foot outlet door that is fully open in the foot mode that mainly blows warm air toward the feet of passengers in the passenger compartment, and the first door is a predetermined opening. It is restrained at the time when it is in foot mode .
Thereby, even in the foot mode, a slight amount of warm air can be blown out stably to the occupant's chest and chest, so that the feeling of heating can be improved reliably.

The air conditioner of the best mode includes a duct having a first air passage and a second air passage through which air passes, and a plate-like first member that is rotatably supported by the duct and opens and closes the first air passage. 1 door, 1st link means which is mechanically connected to the 1st door, and rotates the 1st door so that the opening degree of the 1st door may become predetermined opening, and is supported rotatably by a duct A plate-like second door that opens and closes the second air passage, and a second link that is mechanically connected to the second door and rotationally drives the second door so that the opening degree of the second door becomes a predetermined opening degree. Means, a restraining means provided on the second link means for restraining the first door at a predetermined opening degree, and a main link for interlocking the first link means and the second link means .
Further, when the main link is driven, the first door and the second door are rotationally driven, and the restraining means is a convex lock that locks the concave locked portion provided in the first link means. part Ru der. When the main link is driven within a predetermined range, the locking portion locks the locked portion and restrains the first door to a predetermined opening.

[Configuration of Example 1]
The configuration of the first embodiment will be described with reference to FIGS. 1 and 2. The air conditioner to which the link unit and the restraint unit of the present invention are applied is a vehicle air conditioner that is mounted on a vehicle and air-conditions a vehicle interior. This vehicle air conditioner includes an air conditioning unit that air-conditions the air inside or outside the vehicle interior and blows it out into the vehicle interior, and an air-conditioning control device that controls actuators that drive various air-conditioning devices of the air-conditioning unit .
The air conditioning unit includes a duct (not shown) in which various air passages through which air passes are formed. In this duct, a plate-like door that is rotatably supported to open and close various air passages, a blower (not shown) that generates a flow of air toward the passenger compartment, an evaporator that cools and dehumidifies air, etc. A heat exchanger for cooling (not shown), a heat exchanger for heating (not shown) such as a heater core for heating air, and the like are arranged as air conditioning equipment, and are driven and controlled by an air conditioning control device.

Furthermore, the air conditioning unit is mechanically connected to three doors (hereinafter referred to as first to third doors 1 to 3) provided in the duct, and the opening degree of the first to third doors 1 to 3 is increased. 1st-3rd link means 4-6 which rotationally drive the 1st-3rd doors 1-3 so that it may become a predetermined opening degree are provided. Here, let the air path opened and closed by the 1st-3rd doors 1-3 be the 1st-3rd air path.
The 1st-3rd doors 1-3 are comprised from the door main body which consists of a thin plate about 2 mm thick, and elastically deformable packings, such as sponge which covers the both surfaces. The door body is provided with a shaft portion that is rotatably supported in the duct.

The first link means 4 is disposed outside the case forming the duct. The first link means 4 includes a substantially fan-shaped first door lever 41, a circular plate-shaped first intermediate link 42, and a substantially fan-shaped first follower link 43.
The 1st door lever 41 has the gear part 41g in the circular arc part periphery. The first door lever 41 has a shaft portion 41 c that passes through the case and is connected to the shaft portion of the first door 1, and rotates together with the first door 1.
The first intermediate link 42 has a gear portion 42 g at the periphery thereof and meshes with the gear portion 41 g of the first door lever 41. The first intermediate link 42 is linked to the first door lever 41 by a gear structure in which the gear portion 42 g and the gear portion 41 g of the first door lever 41 are engaged with each other. Moreover, the 1st intermediate link 42 has the axial part 42c rotatably supported by the center part.

  The first driven link 43 has a gear portion 43 g at the periphery of the arc portion, and meshes with the gear portion 42 g of the first intermediate link 42. The first driven link 43 is linked to the first intermediate link 42 by a gear structure in which the gear portion 43 g and the gear portion 42 g of the first intermediate link 42 mesh with each other. Further, a first drive pin 43p is provided at the end opposite to the arc portion, and is linked to the main link 7 through this. The first driven link 43 has a shaft portion 43c that is rotatably supported.

  Further, in the first driven link 43, a groove 43v is formed in the substantially central portion from the periphery of the arc portion, and the stopper 8 is raised on the periphery of the side portion. The stopper 8 is a locked portion on which first driven link restraining means (the restraining pin 9 and the locking portion) described later is hooked in order to lock (restrain) the first driven link 43. The stopper 8 has a sliding surface 8a on which the restraining pin 9 slides, and the restraining pin 9 slides on the sliding surface 8a while the first driven link 43 is restrained.

  The second link means 5 is arranged outside the case forming the duct. The second link means 5 includes a flat bar-like second door lever 51. The 2nd door lever 51 has the 2nd drive pin 51p in the edge part, and is linked with the main link 7 via this. The second door lever 51 has a shaft portion 51c that penetrates the case and is connected to the shaft portion of the second door 2 at the end opposite to the second drive pin 51p, and is integrated with the second door 2. Turns and turns.

  Furthermore, the 2nd door lever 51 has the restraint pin 9 in the edge part which has the 2nd drive pin 51p. The restraining pin 9 protrudes in the opposite direction to the second drive pin 51p (see FIG. 2). When restraining the first driven link 43 in order to maintain the opening degree of the first door 1 at a predetermined opening degree, the restraining pin 9 is caught by the stopper 8 (locked portion) and restrains the first driven link 43. It is the 1st driven link restraint means to (lock).

  The third link means 6 is disposed outside the case forming the duct. The third link means 6 includes a flat bar-like third door lever 61 and a flat bar-like third driven link 62. The third door lever 61 has a slide groove 61v extending in the longitudinal direction. The third door lever 61 has a shaft portion 61 c that passes through the case and is connected to the shaft portion of the third door 3, and rotates integrally with the third door 3.

  The third driven link 62 has a third driven pin 62q at its end, and the third driven pin 62q fits into the slide groove 61v of the third door lever 61. The third driven link 62 is linked to the third door lever 61 by the fitting structure of the third driven pin 62q and the slide groove 61v. The third driven link 62 has a third drive pin 62p at the end opposite to the third driven pin 62q, and is linked to the main link 7 through this. The third driven link 62 has a shaft portion 62c that is rotatably supported at a substantially central portion.

  The main link 7 has first to third slide grooves 71 to 73. The first to third drive pins 43p, 51p, and 62p are fitted in the first to third slide grooves 71 to 73, respectively. Due to the fitting structure of the first to third slide grooves 71 to 73 and the first to third drive pins 43p, 51p, and 62p, the main link 7 has the first driven link 43, the second door lever 51, and the third driven link. 62 is linked. The main link 7 is rotationally driven around the rotation center portion 74 by an actuator (not shown) such as an electric motor. As a result, the main link 7 interlocks the first link means 4, the second link means 5, and the third link means 6, and the first to third doors via the first to third link means 4-6. 1 to 3 are driven to rotate.

The first to third slide grooves 71 to 73 are grooves that extend in the rotation direction of the main link 7 and change in distance from the rotation center portion 74. When the main link 7 is rotationally driven by the actuator, the first to third drive pins 43p, 51p, 62p slide in the first to third slide grooves 71 to 73 and are displaced in the radial direction of the main link 7. To do.
Due to the displacement of the first drive pin 43p, the first driven link 43, the first intermediate link 42, and the first door lever 41 rotate, and the opening degree of the first door 1 is operated. Similarly, the second door lever 51 rotates and the opening degree of the second door 2 is operated by the displacement of the second drive pin 51p, and the third driven link 62 and the third door lever 61 rotate by the displacement of the third drive pin 62p. Then, the opening degree of the third door 3 is operated.

  Here, as shown in FIG. 2, the main link 7, the first driven link 43, and the second door lever 51 are arranged with the main link 7 at the top (for convenience, the front side of FIG. On the bottom). The first drive pin 43p and the second drive pin 51p are provided on the upper surface side of the first driven link 43 and the second door lever 51, respectively, and from the lower surface side of the main link 7 to the first and second slide grooves 71 and 72. It fits. The restraining pin 9 is provided on the lower surface side of the second door lever 51 and faces the groove 43v of the first driven link 43.

  In Example 1, the 1st, 2nd door 1, 2 is applied to the blowing mode switching door which opens and closes the blower outlet to the vehicle interior. That is, the first door 1 is applied to a face blowout door (hereinafter referred to as a face blowout door 1) that is opened in a face mode that mainly blows cold air toward the passenger's head and chest, and the second door 2 is applied to the passenger's head and chest. The present invention is applied to a foot outlet door (hereinafter referred to as a foot outlet door 2) that is opened in a foot mode that mainly blows warm air toward the feet. Moreover, in Example 1, the defroster blowing door (not shown) opened at the time of the differential mode which mainly blows a warm air toward a windshield is provided separately.

  Further, in the first embodiment, the face blowout door 1 is maintained at a minute opening degree by restraining the first driven link 43 in the foot mode. The minute opening is a state in which the ratio of the rotation angle from the fully closed state to the rotation angle when the face blowout door 1 rotates from the fully closed state to the fully open state is 25% or less. For example, when the turning angle when the face outlet door 1 is turned from the fully closed state to the fully opened state is 80 °, the minute opening means that the turning angle of the face outlet door 1 from the fully closed state is 20 °. The state is as follows.

  Here, when the main link 7 is driven to rotate in the positive direction around the rotation center portion 74 (for the sake of convenience, seeing FIG. 1 from the front, the clockwise rotation direction is positive and the counterclockwise rotation direction is negative. The first driven link 43 is driven to rotate in the forward direction around the shaft portion 43c, and the second door lever 51 is driven to rotate in the forward direction around the shaft portion 51c. Thereby, the restraining pin 9 moves to a position restrained by the stopper 8 as shown in FIG. At this time, the first intermediate link 42 is rotationally driven in the negative direction, and the first door lever 41 is rotationally driven in the positive direction. Therefore, when the main link 7 is rotationally driven in the positive direction, the face blowout door 1 is directed in the closing direction (from the fully open side to the fully closed side), and the main link 7 is rotationally driven in the negative direction. The direction is to open (from the fully closed side to the fully open side). Further, when the main link 7 is rotationally driven in the positive direction, the foot outlet door 2 faces in the opening direction (from the fully closed side to the fully open side), and the main link 7 is rotationally driven in the negative direction. Is directed in the closing direction (from the fully open side to the fully closed side).

[Operation of Example 1]
When the main link 7 is rotated by the actuator, each door is operated along the operation line shown in FIG. In FIG. 3, the operation line of the face outlet door 1 is a solid line (indicated as FACE), the operation line of the foot outlet door 2 is a two-dot chain line (indicated as FOOT), and the operation line of the defroster outlet door is a one-dot chain line (DEF). Is displayed).
The operation line indicates the relationship between the rotation angle (drive angle) of the main link 7 and the door angle of each blowout door, and is fully closed at a door angle of 0. The door angle when fully open varies from door to door.

In the first embodiment, the initial state (driving angle: 0) is a face mode in which the face outlet door 1 is fully open and the foot outlet door 2 is fully closed (indicated as FACE in FIGS. 3 and 4). FIG. 1 shows the positions of the first to third slide grooves 71 to 73 of the main link 7 in this initial state.
In this face mode, as shown in FIG. 4, the restraining pin 9 (locking portion) of the second door lever 51 faces the groove portion 43v of the first driven link 43 but is caught by the stopper 8 (locked portion). Absent. For this reason, the first driven link 43 is not restrained by the second door lever 51.

  When the main link 7 is driven to rotate from the face mode, the restraining pin 9 moves toward the stopper 8 while facing the groove 43v, and both the face blowout door 1 and the foot blowout door 2 are in a substantially half open state. Mode (displayed as B / L in FIGS. 3 and 5). Even in this bi-level mode, the restraining pin 9 is not caught by the stopper 8 as shown in FIG. For this reason, the first driven link 43 is not restrained by the second door lever 51.

When the main link 7 is further rotationally driven from this bi-level mode, the restraining pin 9 is caught by the stopper 8 as shown in FIG. 6, and slides on the sliding surface 8a. During this time, the blowing mode is a foot mode (indicated as FOOT in FIGS. 3 and 6) in which the foot blowing door 2 is almost fully opened and the face blowing door 1 is in a very small opening.
The first driven link 43 is restrained by the second door lever 51 while the restraining pin 9 is caught by the stopper 8 and sliding on the sliding surface 8 a.

When the main link 7 is further driven to rotate, the restraining pin 9 slides on the sliding surface 8a as shown in FIG. During this time, the blow mode is a foot differential mode (indicated as F / D in FIGS. 3 and 7) in which the foot blow door 2 is almost half open and the defroster blow door is almost fully open. Thereafter, when the main link 7 is further driven to rotate, the restraining pin 9 moves away from the tip of the stopper 8 as shown in FIG. During this time, the blowing mode is a differential mode (denoted as DEF in FIGS. 3 and 8) in which the foot blowing door 2 is fully closed and the defroster blowing door is fully open.
When the restraining pin 9 is separated from the distal end portion of the stopper 8, the first driven link 43 is not restrained by the second door lever 51.

[Effect of Example 1]
As described above, the plate-like face blowout door 1 and the foot blowout door 2 that are rotatably supported in the duct, and the first and second link means 4 that rotationally drive the face blowout door 1 and the foot blowout door 2. In the foot mode in which the foot blowout door 2 is almost fully open and the face blowout door 1 has a very small opening degree, the stopper 8 of the first driven link 43 (part of the first link means 4) is provided. The second door lever 51 (part of the second link means 5) is restrained by a restraining pin 9 (first driven link restraining means).
Thereby, in the foot mode, the face blowout door 1 can be stably maintained at a very small opening degree against an external force such as wind pressure. For this reason, a small amount of warm air can be stably blown out to the occupant's head and chest in the foot mode, and the feeling of heating can be improved.

[Modification]
In the first embodiment, the three doors of the face blowout door 1, the foot blowout door 2, and the third door 3 are interlocked by one actuator provided on the main link 7, but four or more doors are interlocked. Alternatively, one or two doors may be interlocked. Furthermore, two or more actuators that link a plurality of doors may be provided, and the plurality of doors may be linked to each actuator. When two or more actuators that interlock a plurality of doors are provided, a main link may be provided for each actuator.
In the first embodiment, an electric system using an electric motor is used as the actuator, but a hydraulic system or a manual system may be used.

In the first embodiment, the restraint means (restraint pin 9) is provided by the second link means. However, the restraint means (restraint pin 9) is not limited to this and may be provided by the second door (foot outlet door 2). Furthermore, the restraining means may be a restraining-dedicated part that restrains the first door (face outlet door 1) or the first link means 4.
In the first embodiment, the opening degree of one door (first door) is maintained by one restraining means (restraining pin 9), but the opening degree of two or more doors is one or two or more restraining means. It is also possible to maintain the opening of one door with two or more restraining means.

In the first embodiment, the first link means 4 includes the first door lever 41, the first intermediate link 42, and the first driven link 43. However, in addition to the first intermediate link 42, other intermediate links may be provided. Good. Furthermore, the 1st link means 4 may be comprised from 1 or 2 or more selected from the 1st door lever 41, the 1st intermediate link 42, the 1st driven link 43, and another intermediate link.
In the first embodiment, the locked portion (stopper 8) is provided on the first driven link 43, but is provided on any one of the first door lever 41, the first intermediate link 42, the main link 7, and other intermediate links. May be. Furthermore, you may provide a to-be-latched part in two or more selected from the 1st door lever 41, the 1st intermediate link 42, the 1st driven link 43, the main link 7, and another intermediate link.

In the first embodiment, the second link means includes the second door lever 51, but may include a driven link or an intermediate link. Further, the second link means may be composed of one or two or more selected from the second door lever 51, the driven link, and the intermediate link.
In the first embodiment, the locking portion (restraining pin 9) is provided in the second door lever 51, but it may be provided in any one of the driven link and the intermediate link. Furthermore, you may provide a latching | locking part in two or more selected from the 2nd door lever 51, a driven link, and an intermediate link.

  In the first embodiment, the link between the first door lever 41 and the first intermediate link 42 and the link between the first intermediate link 42 and the first driven link 43 have a gear structure in which the gear portions mesh with each other. Although it is a fitting structure in which a pin fits into the groove, it is not limited to this. That is, the link between the two selected from the door lever, the intermediate link, the driven link, and the main link, or the link between the intermediate links, which link uses a gear structure or a fitting structure is arbitrary. You can choose.

  In the first embodiment, as shown in FIG. 2, from the upper side in the vertical direction, the main link 7, the second door lever 51 having a locking part (restraining pin 9), and the first driven link 43 having a locked part (stopper 8). However, the present invention is not limited to this. That is, any of the main link 7, the second door lever 51, and the first driven link 43 may be disposed at the top, and any of the remaining two may be disposed at the bottom.

In the first embodiment, the first driven link 43 that is the first link means 4 is provided with a stopper 8 that is a concave locked portion, and the second door lever 51 that is the second link means 5 is provided with a convex engagement. Although the restraining pin 9 which is a stopping part (restraining means) is provided, the first link means 4 is provided with a convex locking part (restraining means), and the second link means 5 is provided with a concave locked part. It may be provided .

  In Example 1, only the one end side of the locking portion (restraining pin 9) is in contact with the sliding surface 8a and is locked by the locked portion (stopper 8). That is, since the width of the groove 43v is formed wider than the width of the locking portion (restraint pin 9), the other end is not restrained even if one end is restrained (see FIGS. 6 and 7). On the other hand, as shown in FIG. 9, the width of the groove 43v is formed to be substantially the same as the width of the locking part (restraining pin 9), and the locking part (restraining pin 9) is restrained at both ends. You may make it do. That is, the opening degree of the face outlet door 1 may be maintained at a very small opening degree in the foot mode in a state where the engaging part (restraining pin 9) is fitted in the groove part 43v.

In the first embodiment, the first door is applied to the face outlet door 1, the second door is applied to the foot outlet door 2, and the opening degree of the face outlet door 1 is maintained at a minute opening degree. The opening may be constrained to other degrees of opening, for example, half open or full open. Moreover, two doors selected from a foot blow door 2, a face blow door 1, a defroster blow door, an air mix door that adjusts the ratio of the air passing through the heating heat exchanger by the door opening, etc. 1. It can be applied to the second door.
In the first embodiment, application to a vehicle air conditioner has been described. However, the present invention can also be applied to a stationary air conditioner that blows air toward a room such as an office, a home, or a factory.

(Example 1) which is a top view which shows the principal part of a door and a link means. It is a fragmentary sectional view which shows the principal part of a link means (Example 1). (Example 1) which is an operation | movement figure which shows the operating state of various blowing mode switching doors. (Example 1) which is a top view which shows the positional relationship of the latching | locking part (restraint pin) and to-be-latched part (stopper) in face mode. (Example 1) which is a top view which shows the positional relationship of the latching | locking part (restraint pin) and to-be-latched part (stopper) in bilevel mode. (Example 1) which is a top view which shows the positional relationship of the latching | locking part (restraint pin) and the to-be-latched part (stopper) in foot mode. (Example 1) which is a top view which shows the positional relationship of the latching | locking part (restraint pin) and the to-be-latched part (stopper) in foot differential mode. (Example 1) which is a top view which shows the positional relationship of the latching | locking part (restraint pin) and to-be-latched part (stopper) in differential mode. It is a top view which shows the positional relationship of the latching | locking part (restraint pin) and to-be-latched part (stopper) in foot mode (modification example).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st door, face blowing door 2 2nd door, foot blowing door 3 3rd door 4 1st link means 5 2nd link means 7 Main link 8 Stopper (locked part)
9 Restraint pin (restraint means, locking part)

Claims (3)

A duct formed with a first air passage and a second air passage through which air passes;
A plate-like first door that is rotatably supported by the duct and opens and closes the first air passage;
A first link means that is mechanically coupled to the first door and rotationally drives the first door so that the opening of the first door is a predetermined opening;
A plate-like second door that is rotatably supported by the duct and opens and closes the second air passage;
Second link means that is mechanically connected to the second door and rotationally drives the second door so that the opening degree of the second door becomes a predetermined opening degree;
A restraining means provided on one of the first link means or the second link means for restraining the first door at a predetermined opening;
A main link for interlocking the first link means and the second link means,
By driving the main link, the first door and the second door are rotationally driven,
The restraining means is a convex locking portion that locks a concave locked portion provided on the other of the first link means or the second link means,
The said latching | locking part latches the said to-be-latched part and restrains the said 1st door to the predetermined opening degree, when the said main link is driven in the predetermined range . The air conditioner according to claim 1,
The predetermined opening is a state in which the ratio of the rotation angle from the fully closed state to the rotation angle when the first door rotates from the fully closed state to the fully open state is 25% or less. An air conditioner characterized by. The air conditioner according to claim 2,
The air conditioner is a vehicle air conditioner that is mounted on a vehicle and air-conditions the passenger compartment.
The first door is a face blowout door that is fully open in a face mode that mainly blows cold air toward the head and chest of a passenger in the vehicle interior;
The second door is a foot blowout door that is fully opened in a foot mode that mainly blows warm air toward the feet of passengers in the vehicle interior,
The air conditioner characterized in that the first door is constrained to the predetermined opening degree in the foot mode .

Images