JP5131141B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a cooling heat exchanger and a vehicle air conditioner in which a blower is disposed on the downstream side of a heating heat exchanger.

  Conventionally, an air conditioner blown into the passenger compartment by adjusting the mixing ratio of cold air cooled by an evaporator, which is a heat exchanger for cooling, and hot air heated by a heater core, which is a heat exchanger for heating. An air mix type vehicle air conditioner that adjusts the temperature of wind is known.

Furthermore, this type of air-mix type vehicle air conditioner of this type includes a so-called suction-type layout in which a blower for blowing conditioned air into the passenger compartment is arranged downstream of the evaporator and the heater core (for example, a patent) Reference 1).
JP 61-115709 A

  By the way, the applicant of the present invention previously disclosed in Japanese Patent Application No. 2007-190894 (hereinafter referred to as the prior application example) that air is sucked into the blower of the air-conditioner for a vehicle having a suction-type layout from the rotational axis direction in the radial direction. It proposes a centrifugal fan that blows out.

  According to this prior application example, since the cold air cooled by the evaporator and the warm air heated by the heater core are mixed in the centrifugal fan, the temperature distribution of the blown air blown from the blower is suppressed, for example, The air-conditioning air having a uniform temperature can be blown into the vehicle interior from an opening such as a face opening that blows air-conditioned air toward the upper body side of the occupant and a foot opening that blows air-conditioned air toward the feet of the occupant.

  On the other hand, in the prior application example, the temperature distribution of the blown air blown out from the blower is suppressed, and the conditioned air of uniform temperature is blown out from the face opening and the foot opening. At the same time, in the bi-level mode that blows out air-conditioned air, it is difficult to improve the passenger's air-conditioning feeling by making the temperature distribution in the passenger compartment a head-and-foot type.

  Therefore, for example, a warm air shut door is provided on the downstream side of the heater core to block the warm air, and the hot air shut door is closed in the bi-level mode, thereby realizing a head-and-foot temperature distribution in the passenger compartment. I am trying to figure it out. However, this method requires a separate part called a warm air shut door, which increases the number of parts.

  In view of the above points, the present invention provides a vehicle air conditioner in which a blower is arranged on the downstream side of a cooling heat exchanger and a heating heat exchanger, and the air blown from the blower without increasing the number of parts. The purpose is to allow temperature difference.

  In order to achieve the above object, according to the first aspect of the present invention, the blower (3) includes an impeller (30) in which a large number of blades (300) are disposed around the rotation shaft (30a), and an impeller. An electric motor (31) for rotating (30), and a stabilizer (32) for preventing a backflow of airflow is formed in the case (11), which is perpendicular to the rotating shaft (30a) of the impeller (30). This is a cross flow fan in which air passes through the cross section, and the rotating shaft (30a) is parallel to the heat exchanger (15) for heating.

  As described above, in the vehicle air conditioner of the suction type layout, when the blower (3) is a cross flow fan, the high-temperature air heated by the heating heat exchanger (15) and the cooling heat exchanger (14) It becomes difficult for the low-temperature air cooled in this way to be mixed in the blower (3). For this reason, a temperature difference can be given to the air which blows off from an air blower (3). At this time, since it is not necessary to provide a separate part such as a warm air shut door, it is possible to make a temperature difference in the air blown from the blower (3) without increasing the number of parts.

In the first aspect of the present invention, the case (11) includes a first passage through which the air heated by the heating heat exchanger (15) passes through the air passage upstream of the blower (3). The hot air passage (41) is divided into a first cold air passage (51) through which air cooled by the cooling heat exchanger (14) passes, and the first hot air passage (41) is arranged in the vehicle width direction. The blower (3) communicates the air passage in the impeller (30) with the at least two first hot air passages (41). At least two blower side partition members (62) that partition into at least two second hot air passages (42) and a second cold air passage (52) communicating with the first cold air passage (51); The air flow downstream end (61a) of the side partition member (61) Member has a gap between the (62), it is characterized in that in proximity to a degree that does not contact the blower side partition member (62).

  According to this, the exclusive passage through which the hot air passes and the cold air pass through the air passage from the downstream side of the air flow of the heat exchanger for heating (15) to the inside of the impeller (30) of the blower (3). Since it can be partitioned into a dedicated passage, it is possible to make a large temperature difference in the air blown out from the blower (3).

  In the present invention, “adjacent to the extent that they do not contact” means the position of the end (61a) on the downstream side of the air flow of the upstream partition member (61) and the end (62a) of the blower side partition member (62). Does not mean that the positions of the two sides coincide with each other in the vehicle width direction, and the end of the upstream partition member (61) on the downstream side (61a) and the end of the blower side partition member (62) This means that the distance in the vehicle width direction between the portion (62a) and the distance between adjacent fan-side partition members (62) is ¼ or less.

According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the case (11) includes at least two second hot air in the air passage on the downstream side of the air flow from the blower (3). At least two downstream partition members (63) for partitioning into at least two third hot air passages (43) communicating with the passage (42) and a third cold air passage (53) communicating with the second cold air passage (52). The air flow upstream end of the downstream partition member (63) has a gap with the blower side partition member (62) and is in contact with the blower side partition member (62). The at least two third hot air passages (53) and the third cold air passages (53) communicate with at least one of the plurality of openings (22-24), respectively. It is characterized by having.

  According to this, the air passage from the air flow downstream side of the heat exchanger for heating (15) to the plurality of openings (22 to 24) is divided into a dedicated passage through which hot air passes and a dedicated passage through which cold air passes. Since it can partition with a channel | path, it becomes possible to give a big temperature difference to the air which blows off from several opening part (22-24).

Moreover, in invention of Claim 3 , in the vehicle air conditioner of Claim 2, the mutually opposing ends of the downstream partition member (63) and the blower side partition member (62) are the end portions. It is characterized by being fitted in a state where a gap is formed between them. According to this, even if a fan (3) act | operates and an impeller (30) rotates, it can prevent a downstream partition member (63) and a fan side partition member (62) from contacting.

Moreover, in invention of Claim 4 , in the vehicle air conditioner of Claim 2, between the mutually opposing edge parts of a downstream partition member (63) and a fan side partition member (62), A gap formed so as to extend linearly is provided. According to this, even if a fan (3) act | operates and an impeller (30) rotates, it can prevent a downstream partition member (63) and a fan side partition member (62) from contacting.

Moreover, in invention of Claim 5 , in the vehicle air conditioner as described in any one of Claim 1 thru | or 4, the mutually opposing end of an upstream partition member (61) and a fan side partition member (62) The parts are fitted together with a gap formed between the end parts. According to this, even if a fan (3) act | operates and an impeller (30) rotates, it can prevent an upstream partition member (61) and a fan side partition member (62) from contacting.

Moreover, in invention of Claim 6 , in the vehicle air conditioner as described in any one of Claim 1 thru | or 4, the mutually opposing end of an upstream partition member (61) and a fan side partition member (62) A gap formed so as to extend linearly is provided between the portions. According to this, even if a fan (3) act | operates and an impeller (30) rotates, it can prevent an upstream partition member (61) and a fan side partition member (62) from contacting.

Moreover, in invention of Claim 7, in the vehicle air conditioner as described in any one of Claim 1 thru | or 6, a fan (3) is arrange | positioned on the extension line | wire of the heat exchanger for heating (15). It is characterized by having. According to this, the physique of the whole air conditioner can be reduced in size.
According to an eighth aspect of the present invention, in the vehicle air conditioner according to any one of the first to seventh aspects, the plurality of openings are configured so that air blown from the blower (3) It includes a face opening (23) that blows out toward the upper body side, and a foot opening (24) that blows out air blown from the blower (3) toward the feet of the passengers in the passenger compartment. .
According to this, among the air blown out from the blower (3), high-temperature air is guided to the foot opening (24) and low-temperature air is guided to the face opening (23). A sufficient temperature difference between the conditioned air blown from the opening (24) into the vehicle compartment and the conditioned air blown from the face opening (23) into the vehicle compartment can be secured. As a result, for example, in the above-described bi-level mode, it is possible to reliably realize a chill-free-foot temperature distribution in the passenger compartment, and to reliably improve the air conditioning feeling of the occupant.
Moreover, in invention of Claim 9, in the vehicle air conditioner of Claim 8, on the downstream side of the air flow of the blower (3), the heat exchanger for heating (in the impeller (30)) ( The guide means (4) which guides the air heated in 15) to the foot opening (24) side is provided.
According to this, since the high-temperature air blown out from the blower (3) can be guided to the foot opening (24), the conditioned air blown into the vehicle compartment from the foot opening (24) and the face opening (23 ) From the conditioned air blown into the passenger compartment.
Further, as in the invention according to claim 10, in the vehicle air conditioner according to claim 9, the guide means (4) is arranged from the edge of the foot opening (24) on the downstream side of the air flow to the case (11). ) May be formed so as to bend and extend toward the upstream side of the air flow.
In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view of an indoor air conditioning unit 10 in the vehicle air conditioner of the first embodiment. In addition, each arrow of front, back, up, down, left and right in the figure indicates the direction of the indoor air conditioning unit 10 in the vehicle mounted state.

  The indoor air-conditioning unit 10 has a center-placed layout that is arranged in the vehicle width direction, that is, in a substantially central portion in the left-right direction, inside the instrument panel (instrument panel) at the foremost part of the vehicle interior. The indoor air conditioning unit 10 has a case 11 that forms an outer shell and an air passage for indoor blown air that is blown toward the vehicle interior. The case 11 is formed of a resin (for example, polypropylene) having a certain degree of elasticity and excellent in strength.

  Furthermore, the case 11 has a dividing surface in the vehicle vertical direction at a substantially central portion in the vehicle width direction, and can be divided into two divided portions on the left and right by this dividing surface. The two right and left divided portions are integrally coupled by fastening means such as a metal spring, a clip, and a screw in a state where respective components such as an evaporator 14 and a heater core 15 described later are accommodated therein.

  As shown in FIG. 1, vehicle interior air (hereinafter referred to as interior air) and vehicle exterior air (hereinafter referred to as “inside air”) are located on the vehicle front side and upper side of the case 11 and in the most upstream portion of the air passage formed in the case 11. The inside / outside air switching unit 12 is provided for switching between the outside air and the outside. The inside / outside air switching unit 12 is formed with an inside air introduction port 12a for introducing inside air into the case 11 and an outside air introduction port 12b for introducing outside air.

  Further, an inside / outside air switching door 13 that opens and closes the inside air introduction port 12a and the outside air introduction port 12b is rotatably disposed inside the inside / outside air switching unit 12. The inside / outside air switching door 13 is a so-called cantilever door in which a rotary shaft portion 13b extending in the vehicle width direction is integrally coupled to one end side of a plate-like door main body portion 13a.

  Then, in the inside / outside air switching unit 12, the opening area of the inside air introduction port 12a and the outside air introduction port 12b is made continuous by rotating the rotary shaft 13b by a servo motor or manual operation (not shown) and rotating the door body portion 13a. Can be adjusted.

  On the downstream side of the air flow of the inside / outside air switching unit 12, the evaporator 14 is arranged in a substantially vertical direction, that is, in a substantially vertical direction. The evaporator 14 is one of the devices constituting a well-known vapor compression refrigeration cycle (not shown), and evaporates the low-pressure refrigerant in the refrigeration cycle to exert an endothermic effect, thereby cooling the indoor blown air. It is a heat exchanger for cooling.

  A filter 14 a is provided on the upstream side of the air flow of the evaporator 14 so as to cover the entire heat exchange surface (core surface) of the evaporator 14. The filter 14a captures the inside air flowing into the case 11 from the inside / outside air switching unit 12, the dust in the outside air, and the like.

  A heater core 15 is arranged on the vehicle rear side and the upper side on the downstream side of the air flow of the evaporator 14. The heater core 15 allows hot engine cooling water circulating in an engine cooling water circuit (not shown) to flow into the interior, and exchanges heat between the engine cooling water and low-temperature air (hereinafter, cold air) cooled by the evaporator 14. And a heat exchanger for heating that reheats the cold air.

  The heater core 15 is also arranged in a substantially vertical direction, but is arranged so that the lower side is slightly inclined toward the vehicle rear side from the upper side. Thereby, the working space of the air mix door 20 mentioned later is ensured. In addition, that the evaporator 14 and the heater core 15 are arranged in a substantially vertical direction means that the heat exchange surface is arranged so as to extend in a substantially vertical direction.

  A wall portion 16 formed integrally with the case 11 is disposed on the vehicle rear side of the heater core 15, and between the heater core 15 and the wall portion 16, hot air heated by the heater core 15 (hereinafter, referred to as “heated air”). A warm air passage 17 through which warm air flows from the upper side to the lower side is formed. A blower 3 described later is disposed downstream of the warm air passage 17.

  A cold air passage 19 is formed on the rear side of the evaporator 14 and on the lower side of the heater core 15. The cold air passage 19 is a bypass passage through which the cold air after passing through the evaporator 14 flows around the heater core 15. In addition, the blower 3 is disposed on the downstream side (the vehicle rear side) of the cold air passage 19.

  Further, immediately after the evaporator 14, an air mix door 20 that adjusts the air volume ratio of the cool air flowing into the heater core 15 and the cool air flowing into the cool air passage 19 is disposed. The air mix door 20 is configured to drive and displace a plate-like portion 20a extending in a circular arc shape in the vehicle vertical direction in a bending direction of the plate-like portion 20a through a gear mechanism 20b by a servo motor (not shown) or manual operation. It consists of a sliding door.

  More specifically, by moving (sliding) the plate-like portion 20a of the air mix door 20 upward of the vehicle, the passage opening on the cold air passage 19 side is increased and the passage opening on the heater core 15 side is decreased. Conversely, by moving (sliding) the plate-like portion 20a downward in the vehicle, the passage opening on the cold air passage 19 side is decreased and the passage opening on the heater core 15 side is increased.

  Then, by adjusting the opening degree of the air mix door 20, the air volume ratio of hot air (arrow a) and cold air (arrow b) sucked into the blower 3 is adjusted, and the room blown from the blower 3 toward the vehicle interior. The temperature of the blown air is adjusted. That is, the air mix door 20 constitutes temperature adjusting means for the indoor blown air.

  The blower 3 is disposed on the downstream side of the air flow of the evaporator 14 and the heater core 15. This blower 3 blows air toward the passenger compartment. In the present embodiment, the blower 3 is disposed on an extension line on the lower side of the heater core 15. In other words, the blower 3 is disposed below the heater core 3 in the flat direction of the heater core 15, that is, in the direction orthogonal to both the air flow direction of the heater core 15 and the vehicle width direction. Thereby, the physique of the indoor air-conditioning unit 10 can be reduced in size.

  2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG. As shown in FIGS. 1 to 3, the blower 3 includes an impeller 30 in which a large number of blades 300 are disposed around a rotation shaft 30 a, and an electric motor 31 that rotationally drives the impeller 30. This is a cross flow fan in which air passes through a cross section perpendicular to the rotating shaft 30 a of the impeller 30 by the rotation of the wheel 30. The voltage applied to the electric motor 31 is adjusted by a motor drive circuit (not shown). The rotating shaft 30 a of the impeller 30 is parallel to the heater core 15. In the present embodiment, the rotating shaft 30a of the impeller 30 extends substantially parallel to the horizontal direction when mounted on the vehicle.

  A stabilizer 32 is formed at the lower end of the wall 16 of the case 11 to prevent the backflow of the airflow generated by the rotation of the impeller 30. The stabilizer 32 partitions an inflow air passage through which air flowing into the impeller 30 passes and an outflow air passage through which air that has flowed out of the impeller 30 passes.

  Then, rotation of the impeller 30 induces a circulation flow (see arrow c in FIG. 1) centering around the vicinity of the stabilizer 32, and as described above, the air flows in a cross section perpendicular to the rotation shaft 30a of the impeller 30. Pass through. The impeller 30 is made of resin, for example. The blade 300 of the impeller 30 has a shape in which the front side is concave with respect to the rotation direction of the impeller 30 (counterclockwise in this embodiment). In the present embodiment, the stabilizer 32 is located on the rear side of the rotating shaft 30 a of the impeller 30.

  As shown in FIG. 1, between the rearmost side wall surface of the case 11 and the wall portion 16 provided inside the case 11, the air blown from the blower 3 is guided to a plurality of openings 22 to 24 described later. A blown air passage 21 is formed. More specifically, the blown air passage 21 extends substantially in the vertical direction, and the air blown from the blower 3 flows through the blown air passage 21 from below to above.

  By the way, the warm air flowing through the warm air passage 17 flows into the impeller 30 from the vicinity of the stabilizer 32 as shown by an arrow a, passes just outside the circulation flow in the impeller 30, and passes through the blower air passage 21. It flows out to the vicinity of the stabilizer 32, that is, the vehicle front side of the blown air passage 21.

  On the other hand, the cold air flowing through the cold air passage 19 flows into the impeller 30 from the side far from the stabilizer 32, that is, from the lower side of the impeller 30, as shown by the arrow b, and passes through the portion away from the circulation flow as it is. The air passage 21 flows away from the stabilizer 32, that is, the vehicle rear side of the blown air passage 21.

  Therefore, the warm air heated by the heater core 15 and the cool air cooled by the evaporator 14 are hardly mixed in the impeller 30 of the blower 3. Thereby, a temperature difference can be given to the air that has flowed out of the blower 3.

  Next, a defroster opening 22 that blows out the air blown from the blower 3 toward the vehicle front window glass is provided on the upper surface portion of the case 11 and at a substantially central portion in the vehicle front-rear direction. Specifically, the air that has passed through the defroster opening 22 is blown out toward the inner surface of the vehicle front window glass through a defroster duct (not shown) and a defroster outlet provided on the upper side of the vehicle instrument panel.

  A face opening 23 is provided on the upper surface of the case 11 and behind the defroster opening 22 to blow out the air blown from the blower 3 toward the upper body side of the passenger in the passenger compartment. Specifically, the air that has passed through the face opening 23 is blown out toward the passenger in the vehicle cabin through a face duct (not shown) and a face outlet that faces the vehicle instrument panel occupant.

  Also, immediately below the defroster opening 22 and the face opening 23, there is a defroster face door (not shown) that adjusts the airflow of the conditioned air that passes through the defroster opening 22 and the airflow that passes through the face opening 23. Has been placed. As this defroster face door, a slide door having the same structure as the air mix door 20 described above can be adopted.

  4 is a cross-sectional view taken along the line CC of FIG. In FIG. 4, the blower 3 is not shown.

  As shown in FIGS. 1 and 4, foot openings 24 for blowing air blown from the blower 3 toward the feet of the passengers in the vehicle are provided below the both sides of the blower air passage 21 in the vehicle width direction. It has been. Specifically, the air that has passed through the foot opening 24 is blown out toward the feet of the passengers in the passenger compartment through the foot duct 25 and the foot outlet 26 provided in the vicinity of the passenger's feet in the passenger compartment. The

  Each foot opening 24 is provided with a foot door (not shown) for opening and closing the foot opening 24. This foot door can employ a so-called butterfly door in which a rotating shaft portion extending in the vehicle front-rear direction is integrally coupled to a substantially central portion of a plate-like door main body portion. Then, the foot opening 24 is opened and closed by rotating the rotating shaft portion by a servo motor (not shown) or by manual operation to rotationally displace the door body portion.

  On the downstream side of the air flow of the blower 3, a hot air guide rib 4, which is guide means for guiding the hot air flowing out from the impeller 30 of the blower 3 so as to flow into the foot duct 25, is provided. The hot air guide rib 4 extends smoothly from the edge of the foot opening 24 on the air flow downstream side (the vehicle upper side) toward the inner side of the case 11 in the vehicle width direction, and then smoothly bends to the air flow upstream side. It extends toward (the vehicle lower side). For this reason, the cross section of the warm air guide rib 4 viewed from the front-rear direction of the vehicle has a substantially arc shape.

  And the warm air guide rib 4 is formed so that the part by the side of the vehicle front side of the foot opening part 24 may be covered. That is, when viewed from the vehicle width direction, the warm air guide rib 4 overlaps with a part of the foot opening 24, and the overlapping part is a part located on the vehicle front side of the foot opening 24. Accordingly, the warm air guide rib 4 is not disposed on the vehicle rear side in the foot opening 24. In the present embodiment, the warm air guide rib 4 is formed so as to cover the vehicle front side portion of the foot opening 24 over the entire region in the vehicle vertical direction.

  Therefore, the warm air flowing out from the impeller 30 of the blower 3 is guided by the warm air guide rib 4 and flows into the foot duct 25 as shown by the arrow a in FIG. 1 and the arrow d in FIG. Yes. On the other hand, the cold air flowing out from the impeller 30 of the blower 3 passes through the blown air passage 21 without being guided by the hot air guide rib 4 as indicated by an arrow b in FIG. At this time, the amount of air flowing into the foot duct 25 from the foot opening 24 can be changed by changing the length of the warm air guide rib 4 in the vehicle front-rear direction. The hot air guide rib 4 of this embodiment is made of resin and is formed integrally with the case 11.

  Next, an outline of the electric control unit of the present embodiment will be described. Various actuators such as the above-described servo motors for the air mix door 20, the defroster / face door, the foot door, and the electric motor 31 for the blower 3 are connected to the output side of an air conditioning control device (not shown). The operation is controlled by the output control signal.

  The air conditioning control device includes a known microcomputer including a CPU, a ROM, a RAM, and the like and peripheral circuits thereof. This air conditioning control device stores an air conditioning device control program in its ROM, performs various calculations and processes based on the air conditioning device control program, and controls the operation of the air conditioning control device connected to the output side.

  On the input side of the air-conditioning control device, a sensor group for detecting the vehicle environmental conditions such as the outside air temperature Tam, the inside air temperature Tr, the amount of solar radiation Ts entering the vehicle interior, and the operation for outputting an operation command signal for the vehicle air-conditioning device An operation panel provided with a switch, a temperature setting switch for setting the vehicle interior target temperature Tset, and the like is connected.

  Next, the operation of this embodiment in the above configuration will be described. When the operation switch is turned on in the vehicle operating state, the air conditioning control device executes the air conditioning device control program stored in the ROM. When the air conditioner control program is executed, the detection signal detected by the sensor group and the operation signal of the operation panel are read. And based on these signals, the target blowing temperature TAO of vehicle interior blowing air is calculated.

  Further, the air-conditioning control device determines the rotational speed of the blower 3 (air flow rate), the open / close state of the defroster / face door and foot door (blow-out mode), the target opening degree of the air mix door 20 and the like based on the target blowout temperature TAO. Then, control signals are output to various actuators so that the determined control state is obtained.

  Then, the routine of reading the operation signal and detection signal → calculating TAO → determining a new control state → outputting the control signal is repeated.

  Here, the control state of the opening / closing state (blowing mode) of the defroster face door and the foot door will be described. The blowing mode is determined based on the target blowing temperature TAO with reference to a control map stored in advance in the air conditioning control device. In the present embodiment, the blowing mode is sequentially switched from the face mode to the bi-level mode to the foot mode as the target blowing temperature TAO increases from the low temperature range to the high temperature range.

  Hereinafter, the opening / closing states of the defroster / face door and the foot door in each blowing mode will be described.

  The face mode is a mode in which conditioned air is blown from the face outlet toward the upper body side of the occupant. Accordingly, in the face mode, the defroster face door is rotated to a position where the face opening 23 is fully opened, and the foot door is rotated to a position where the foot opening 24 is fully closed.

  The foot mode is a mode in which conditioned air is blown from the foot outlet toward the occupant's feet. Therefore, in the foot mode, the defroster face door is rotated to a position where the face opening 23 is fully closed, and the foot door is rotated to a position where the foot opening 24 is fully opened.

  The bi-level mode is a mode in which conditioned air is blown out from the face outlet toward the occupant's upper body, and at the same time, conditioned air is blown out from the foot outlet toward the occupant's feet. Accordingly, in the bilevel mode, the defroster face door is rotated to a position where the face opening 23 is opened, and the foot door is rotated to a position where the foot opening 24 is opened.

  In addition, the driving | operation of a defroster mode can also be performed as one of the blowing modes by a passenger | crew's manual operation. This defroster mode is a mode in which conditioned air is blown from the defroster outlet toward the vehicle window glass side. Therefore, in the defroster mode, the defroster face door is rotated to a position where the defroster opening 22 is fully opened.

  Among the above blowing modes, in the present embodiment, the following excellent effects can be exhibited particularly in the bi-level mode.

  When the vehicle air conditioner is activated and the control signal of the air conditioning controller is output, the blower 3 is activated. Then, the warm air heated by the heater core 15 and the cool air cooled by the evaporator 14 are sucked into the impeller 30 as indicated by arrows a and b, and after passing through the blowing air passage 21, the face opening 23. And flows toward the foot opening 24.

  At this time, the warm air passing through the vicinity of the stabilizer 32 in the impeller 30 of the blower 3 is guided by the warm air guide rib 4 and flows into the foot duct 25 from the foot opening 24. On the other hand, the cold air that has passed through the part away from the stabilizer 32 in the impeller 30 of the blower 3 is guided to the vicinity of the face opening 23 via the blown air passage 21.

  Therefore, the temperature of the conditioned air blown out from the foot opening 24 into the vehicle interior can be reliably higher than the temperature of the conditioned air blown out from the face opening 23 into the vehicle interior. A sufficient temperature difference between the conditioned air blown from the foot opening 24 into the vehicle compartment and the conditioned air blown from the face opening 23 into the vehicle compartment can be ensured. As a result, in the above-described bi-level mode, it is possible to reliably realize a temperature distribution of the chilling foot type in the passenger compartment, and to reliably improve the air conditioning feeling of the occupant.

  Further, in the present embodiment, the amount of air flowing into the foot duct 25 from the foot opening 24 can be changed by changing the length of the hot air guide rib 4 in the vehicle front-rear direction. Thereby, the temperature difference between the conditioned air blown out from the foot opening 24 into the vehicle compartment and the conditioned air blown out from the face opening 23 into the vehicle compartment can be appropriately changed.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view of the indoor air conditioning unit 10 in the vehicle air conditioner according to the second embodiment, FIG. 6 is a DD cross-sectional view of FIG. 5, and FIG. 7 is a cross-sectional view taken along line EE of FIG. FIG. 7 shows the bi-level mode.

  5 to 7 and FIGS. 9 and 10 to be described later, solid line arrows indicate the flow of hot air heated by the heater core 15, and broken line arrows indicate the flow of cold air cooled by the evaporator 14. Moreover, the two-dot chain line arrow in FIG. 5 has shown the circulating flow induced when the impeller 30 of the air blower 3 rotated. Moreover, the dashed-dotted arrow in FIG. 7 has shown the flow of the mixed wind with which warm air and cold air were mixed.

  As shown in FIG. 6, the case 11 includes a first hot air passage 41 through which the warm air heated by the heater core 15 passes through an air passage upstream of the blower 3 and downstream of the heater core 15. And an upstream side case rib 61 as an upstream side partition member that divides the first warm air passage 41 into two in the vehicle width direction, and the first cold air passage 51 through which the cold air cooled by the evaporator 14 passes. have.

  The upstream side case rib 61 is disposed at a substantially central portion in the vehicle width direction of the case 11 and is configured to divide the hot air flow from the heater core 15 into left and right in the vehicle width direction. For this reason, the 1st warm air path 41 is provided 1 each in the both ends part side of the vehicle width direction. Further, in the vicinity of the blower 3, a first cold air passage 51 is disposed between the two first hot air passages 41. The upstream case rib 61 is formed of resin, and is integrally formed with the case 11 in this embodiment.

  The blower 3 partitions the air passage in the impeller 30 into two second hot air passages 42 that communicate with the two first hot air passages 41 and a second cold air passage 52 that communicates with the first cold air passage 51. Two blower side partition members 62 are provided. The blower-side partition member 62 is arranged in parallel to a direction orthogonal to the axial direction of the impeller 30, and is configured to partition an air passage in the impeller 30 in the axial direction of the blower 3.

  Specifically, two blower side partition members 62 are provided in the impeller 30, whereby the air passage in the impeller 30 is divided into three. Of the three air passages, two air passages on both end sides in the vehicle width direction are the second hot air passages 42, and one air passage in the center in the vehicle width direction is the second cold air passage 52. ing. The blower-side partition member 62 is molded from resin, and is molded integrally with the impeller 30 in this embodiment.

  As shown in FIG. 7, the case 11 includes an air passage on the downstream side of the air blower 3, two third hot air passages 43 communicating with the two second hot air passages 42, and a second cold air passage 52. Two downstream case ribs 63 are provided as downstream partition members that partition into the third cold air passage 53 that communicates with the third cool air passage 53. The downstream case rib 63 is formed so as to rise upward from the bottom surface of the case 11 and to extend in parallel with the vehicle longitudinal direction.

  In the present embodiment, since two blower side partition members 62 are provided, two downstream case ribs 63 are provided so as to correspond to the blower side partition member 62. Thus, the air passage on the downstream side of the air flow from the blower 3 is divided into three. Of the three air passages, two air passages on both ends in the vehicle width direction are third hot air passages 43, and one air passage in the center in the vehicle width direction is the third cold air passage 53. ing. The downstream case rib 63 is formed of resin, and is integrally formed with the case 11 in this embodiment.

  Further, a face / foot door 27 for opening and closing the face opening 23 and the foot opening 24 is disposed below the face opening 23 and on the side of the foot opening 24 in the case 11. Similar to the inside / outside air switching door 13, the face / foot door 27 is a so-called cantilever door in which a rotary shaft 27b extending in the vehicle front-rear direction is integrally coupled to one end of a plate-like door main body 27a. .

  The rotating shaft portion 27b is rotatably supported by bearing holes (not shown) on the front and rear wall surfaces of the case 11, and the rotating shaft portion 27b is rotated by a servo motor or a manual operation (not shown). By rotating and displacing the portion 27a, the opening areas of the face opening 23 and the foot opening 24 can be continuously adjusted. Further, the upper end portion 63a of the downstream case rib 63 and the face / foot door 27 are opposed to each other through a minute gap.

  Returning to FIG. 6, the end of the upstream case rib 61 on the downstream side of the air flow has a gap with the blower side partition member 62, and is close enough not to contact the blower side partition member 62. That is, the upstream side case rib 61 and the blower side partition member 62 are opposed to each other through a minute gap.

  FIG. 8 is an enlarged view of a portion F in FIG. As shown in FIG. 8, in the present embodiment, a gap having a gap dimension larger than 0 and a maze structure is formed between the opposite ends of the upstream case rib 61 and the blower side partition member 62. Is provided.

  Specifically, the end 61a of the upstream case rib 61 on the downstream side of the air flow is formed in a substantially U-shaped cross section with the blower side partition member 62 side opened. Further, the end portion 62 a of the blower-side partition member 62 enters the substantially U-shaped concave portion of the upstream case rib 61. At this time, the end 62 a of the blower-side partition member 62 is not in contact with the end 61 a of the upstream case rib 61 on the downstream side of the air flow.

  For this reason, a labyrinth-structured gap is formed between the end 61 a of the upstream case rib 61 on the downstream side of the air flow and the end 62 a of the blower side partition member 62. That is, an air passage through which air passes is formed between the end 61a of the upstream case rib 61 on the downstream side of the air flow and the end 62a of the blower side partitioning member 62. Yes.

  Returning to FIG. 6, the end of the downstream case rib 63 on the upstream side of the air flow has a gap with the blower side partition member 62, and is close enough not to contact the blower side partition member 62. In the present embodiment, a gap having a gap dimension larger than 0 and having a maze structure is provided between the opposite ends of the downstream case rib 63 and the blower side partition member 62.

  Specifically, the end of the downstream case rib 63 on the upstream side of the air flow is formed in a substantially U-shaped cross section with the blower side partition member 62 side opened. Further, the end portion of the blower side partition member 62 enters the substantially U-shaped concave portion of the downstream case rib 63. At this time, the end of the blower side partition member 62 is not in contact with the end of the downstream case rib 63 on the upstream side of the air flow. For this reason, a maze-structured gap is formed between the end of the downstream case rib 63 on the upstream side of the air flow and the end of the blower side partition member 62.

  Hereinafter, the open / close state and air flow of the face / foot door 27 in each blowing mode will be described.

  FIG. 9 is a cross-sectional view of the indoor air conditioning unit 10 in the face mode in the second embodiment, and corresponds to FIG. In the face mode, as shown in FIGS. 6 and 9, the air mix door 20 is in the maximum cooling position where the air passage of the heater core 15 is fully closed and the cool air passage 19 is fully opened, and the face / foot door 27 is the face opening. It is operated so as to be in the fully open position.

  As a result, the cold air is blown out from the face opening 23 toward the upper body of the passenger in the vehicle cabin via the first cold air passage 51, the second cold air passage 52, and the third cold air passage 53. Further, since the cold air partially flows into the second hot air passage 42 formed in the impeller 30 of the blower 3, the face opening portion is provided via the second hot air passage 42 and the third hot air passage 43. 23 is blown out toward the upper body of the passenger in the passenger compartment.

  Here, when temperature adjustment is performed in the face mode, the air mix door 20 is operated to open the ventilation path of the heater core 15. Thereby, the warm air heated by the heater core 15 flows into the second warm air passage 42 in the blower 3 through the first warm air passage 41. Therefore, on the downstream side of the air flow of the blower 3, the mixed air of the cold air and the hot air flows through the third hot air passage 43, and thus the temperature-adjusted air is blown out from the face opening 23.

  FIG. 10 is a cross-sectional view of the indoor air conditioning unit 10 in the foot mode in the second embodiment, and corresponds to FIG. In the foot mode, as shown in FIGS. 6 and 10, the air mix door 20 is in the maximum heating position where the cool air passage 19 is fully closed and the ventilation path of the heater core 15 is fully open, and the face foot door 27 is in the foot opening. 24 is operated to be in the fully open position. Thereby, the warm air is blown out from the foot opening 24 toward the feet of the passengers in the vehicle cabin via the first warm air passage 41, the second warm air passage 42, and the third warm air passage 43.

  Here, when temperature adjustment is performed in the foot mode, the air mix door 20 is operated so as to open the cool air passage 19. Accordingly, the cold air cooled by the evaporator 14 flows into the third cold air passage 53 via the first cold air passage 51 and the second cold air passage 52. A part of the cold air flows into the third hot air passage 43 via the second hot air passage 42 formed in the impeller 30 of the blower 3. For this reason, the temperature-adjusted air is blown out from the foot opening 24.

  In the bi-level mode, as shown in FIGS. 6 and 7, the air mix door 20 is in an intermediate position between the maximum cooling position and the maximum heating position, and the face / foot door 27 is fully opened and the foot opening 24 is fully opened. It is operated so as to be an intermediate position with respect to the position. As a result, the cold air is blown out from the face opening 23 toward the upper body of the passenger in the vehicle cabin via the first cold air passage 51, the second cold air passage 52, and the third cold air passage 53.

  Further, the warm air flows into the third warm air passage 43 via the first warm air passage 41 and the second warm air passage 42. However, since the cold air partially flows into the second hot air passage 42, the third Both hot air and cold air flow into the hot air passage 43. Then, the warm air and the cool air are mixed in the third warm air passage 43, and the mixed air is blown out from the foot opening 24 toward the feet of the passengers in the passenger compartment.

  Here, in the bi-level mode, the temperature is adjusted by adjusting the opening degree of the air mix door 20 and adjusting the amount of cool air flowing into the second cool air passage 52 and the second warm air passage 42. Can do.

  Thus, in the bi-level mode, in the case 11, the passage through which the warm air (mixed air) passes and the passage through which the cool air passes can be separated. That is, it is possible to form in the case 11 a dedicated passage for hot air through which hot air passes and a dedicated passage for cold air through which cool air passes. Thereby, the temperature of the conditioned air blown out from the foot opening 24 into the vehicle interior can be reliably made higher than the temperature of the conditioned air blown out from the face opening 23 into the vehicle interior. A sufficient temperature difference between the conditioned air blown from the foot opening 24 into the vehicle compartment and the conditioned air blown from the face opening 23 into the vehicle compartment can be ensured. As a result, in the bi-level mode, it is possible to reliably realize a temperature distribution of the chilled head heat type in the passenger compartment, thereby reliably improving the air conditioning feeling of the occupant.

  In this embodiment, since the cross flow fan is employ | adopted for the air blower 3, the air path in the impeller 30 can be divided | segmented into plurality, without changing the magnitude | size of a vehicle width direction. Moreover, since the air passage in the impeller 30 can be divided into a plurality of parts simply by disposing the blower-side partition member 62, a hot air exclusive passage through which hot air passes without newly providing the blower 3, A cold air exclusive passage through which the cold air passes can be formed. Therefore, the temperature of the conditioned air blown out from the foot opening 24 into the vehicle compartment is surely made higher than the temperature of the conditioned air blown out from the face opening 23 into the vehicle compartment while suppressing an increase in the number of parts. Is possible.

  Moreover, the air blower 3 act | operates and the impeller 30 is act | operated by fitting the edge parts which mutually face the upstream case rib 61 and the air blower side partition member 62 in the state in which the clearance gap was formed between the said edge parts. The upstream case rib 61 and the blower side partitioning member 62 can be prevented from contacting each other even if the rotation is performed. Similarly, the air blower 3 is actuated by fitting the opposite end portions of the downstream case rib 63 and the blower side partition member 62 in a state where a gap is formed between the end portions, and the impeller. Even if 30 rotates, it can prevent that the downstream case rib 63 and the air blower side partition member 62 contact.

(Third embodiment)
Next, a third embodiment of the present invention will be described based on FIG. 11 and FIG. FIG. 11 is a cross-sectional view of the indoor air conditioning unit 10 in the vehicle air conditioner according to the third embodiment, and corresponds to FIG. In FIG. 11 and FIG. 12 to be described later, a solid line arrow indicates a flow of warm air heated by the heater core 15, and a broken line arrow indicates a flow of cold air cooled by the evaporator 14.

  As shown in FIG. 11, the air mix door 20 of the present embodiment is divided into two at a substantially central portion in the vehicle width direction. That is, one air mix door 20 is provided in the vehicle right side region and the vehicle left side region. The air mix door 20 provided in the vehicle right side region and the vehicle left side region is configured to be independently controllable.

  By changing the opening degree of the air mix door 20 provided in the right side region of the vehicle, the amount of warm air flowing through the first warm air passage 41 disposed on the right side in the vehicle width direction is adjusted. Further, by changing the opening degree of the air mix door 20 provided in the left side region of the vehicle, the amount of warm air flowing through the first hot air passage 41 disposed on the left side in the vehicle width direction is adjusted.

  The case 11 has a first central partition member 64 that partitions the first cold air passage 51 into the left and right in the vehicle width direction. The first central partition member 64 is made of resin and is formed integrally with the case 11 and the upstream case rib 61.

  The blower 3 includes a second central partition member 65 that partitions the second cold air passage 52 in the impeller 30 into two on the left and right sides in the vehicle width direction. The second central partition member 65 is disposed in parallel to the direction orthogonal to the axial direction of the impeller 30, and is configured to partition the second cold air passage 52 in the axial direction of the blower 3. The two blower side partition members 63 and the second central partition member 65 are arranged at equal intervals so that the lengths of the second hot air passages 42 and the divided second cold air passages 52 in the vehicle width direction are equal to each other. Has been. The second central partition member 65 is made of resin and is formed integrally with the impeller 30.

  FIG. 12 is a cross-sectional view of the indoor air conditioning unit 10 in the bi-level mode in the third embodiment, and corresponds to FIG. In addition, the dashed-dotted line arrow in FIG. 12 has shown the flow of the mixed air with which warm air and cold air were mixed.

  As shown in FIG. 12, the case 11 includes a third central partition member 66 that partitions the third cold air passage 53 on the downstream side of the air flow from the blower 3 in the left and right directions in the vehicle width direction. The third central partition member 66 is formed so as to rise upward from the bottom surface of the case 11 to the vicinity of the face opening 23 and to extend in parallel with the vehicle longitudinal direction. The third central partition member 66 is made of resin and is formed integrally with the case 11.

  Returning to FIG. 11, the end of the first central partition member 64 on the downstream side of the air flow has a gap with the second central partition member 65 and is close enough not to contact the second central partition member 65. doing. More specifically, a gap having a gap size larger than 0 and a maze structure is provided between the ends of the first center partition member 64 and the second center partition member 65 facing each other. .

  Specifically, the end portion of the first central partition member 64 on the downstream side of the air flow is formed in a substantially U-shaped cross section in which the second central partition member 65 side is open. Further, the end portion of the second central partition member 65 enters the substantially U-shaped concave portion of the first central partition member 64. At this time, the end of the second central partition member 65 is not in contact with the end of the first central partition member 64 on the downstream side of the air flow. For this reason, a maze structured gap is formed between the end of the first central partition member 64 on the downstream side of the air flow and the end of the second central partition member 65.

  The end of the third central partition member 66 on the upstream side of the air flow has a gap with the second central partition member 65 and is close enough not to contact the second central partition member 65. In the present embodiment, a gap having a gap size larger than 0 and a maze structure is provided between the opposite ends of the third center partition member 66 and the second center partition member 65. .

  Specifically, the end of the third central partition member 66 on the upstream side of the air flow is formed in a substantially U-shaped cross section with the second central partition member 65 opened. Further, the end portion of the second central partition member 65 enters the substantially U-shaped concave portion of the third central partition member 66. At this time, the end of the second central partition member 65 is not in contact with the end of the third central partition member 66 on the upstream side of the air flow. For this reason, a maze-structured gap is formed between the end of the third central partition member 66 on the upstream side of the air flow and the end of the second central partition member 65.

  Thus, in this embodiment, in addition to the effects of the second embodiment, the air mix doors 20 provided in the vehicle right side region and the vehicle left side region are configured to be independently controllable, and further, the first central partition. The member 64 and the third central partition member 66 divide the air passage in the case 11 at the center in the vehicle width direction, and the second center partition member 45 divides the air passage in the blower 3 at the vehicle width direction center. Therefore, it is possible to independently control the temperature of the conditioned air blown to the left and right areas in the vehicle interior.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 13 is a cross-sectional view of the indoor air-conditioning unit 10 in the vehicle air conditioner according to the fourth embodiment, FIG. 14 is a GG cross-sectional view of FIG. 13, and FIG. 15 is a HH cross-sectional view of FIG. FIG. 15 shows the bi-level mode.

  13 to 15, the solid line arrows indicate the flow of hot air heated by the heater core 15, and the broken line arrows indicate the flow of cold air cooled by the evaporator 14. Moreover, the dashed-two dotted line arrow in FIG. 13 has shown the circulating flow induced by the impeller 30 of the air blower 3 rotating. Moreover, the dashed-dotted arrow in FIG. 15 has shown the flow of the mixed air with which warm air and cold air were mixed.

  As shown in FIG. 14, the air mix door 20 of the present embodiment is divided into three in the vehicle width direction. That is, one air mix door 20 is provided in each of the vehicle right side region, the vehicle left side region, and the vehicle center region. The air mix door 20 provided in the vehicle right side region, the vehicle left side region, and the vehicle center region is configured to be independently controllable.

  The upstream side case rib 61 of the present embodiment is configured to include two divided wall portions 610 that divide the first warm air passage 41 into three in the vehicle width direction. The two divided wall portions 610 are each formed in a plate shape orthogonal to the vehicle width direction. Hereinafter, of the three first hot air passages 41, the two first hot air passages 41 arranged at both ends in the vehicle width direction are referred to as first side hot air passages 41a, and are arranged at the center in the vehicle width direction. The first hot air passage 41 to be performed is referred to as a first central hot air passage 41b.

  By changing the opening degree of the air mix door 20 provided in the right side area of the vehicle, the amount of warm air flowing through the first side warm air passage 41a arranged on the right side in the vehicle width direction is adjusted. Further, by changing the opening degree of the air mix door 20 provided in the left side area of the vehicle, the amount of warm air flowing through the first side warm air passage 41a arranged on the left side in the vehicle width direction is adjusted. Moreover, the air volume of the warm air which flows through the 1st center warm air path 41b is adjusted by changing the opening degree of the air mix door 20 provided in the vehicle center area | region.

  Four blower side partition members 62 of the present embodiment are provided in the impeller 30. The four blower side partition members 62 include two second side hot air passages 42a that communicate the air passages in the impeller 30 with the two first side hot air passages 41a, and the first central hot air passage 41b. The second central hot air passage 42 b communicating with the first cold air passage 51 and the two second cold air passages 52 communicating with the first cold air passage 51 are disposed. A second central hot air passage 42b is disposed at the center of the impeller 30 in the vehicle width direction, a second cold air passage 52 is disposed outside the second central hot air passage 42b, and an outer side of the second cold air passage 52. That is, the second side hot air passage 42a is disposed on the outermost side in the vehicle width direction.

  As shown in FIG. 15, a rear face passage forming member that forms a rear face passage 70 communicating with the second central hot air passage 42 b at the downstream side of the air flow of the blower 3 in the case 11 and at the center in the vehicle width direction. 71 is provided.

  Returning to FIG. 13, the rear face passage 70 is disposed on the lower side of the case 11 and is formed to extend toward the rear side of the vehicle. A rear face opening 72 is opened at an end of the rear face passage 70 on the downstream side of the air flow. The rear face opening 72 is connected via a rear face duct (not shown) to a rear face air outlet (not shown) disposed on the rear side of the vehicle interior, and the upper body side of the rear seat occupant from the rear face air outlet. It is comprised so that an air-conditioning wind may be blown out toward.

  A rear face door 73 that opens and closes the rear face opening 72 is rotatably disposed inside the rear face passage 70. The rear face door 73 is a so-called cantilever door in which a rotating shaft portion 73b extending in the vehicle width direction is integrally coupled to one end side of a plate-like door main body portion 73a. In the rear face passage 70, the opening area of the rear face opening 72 can be continuously adjusted by rotating the rotary shaft 73b and rotating the door main body 73a by a servo motor or manual operation (not shown). It has become.

  As shown in FIG. 15, the rear face passage forming member 71 is disposed between the two downstream case ribs 63. Further, the rear face passage forming member 71 has a central partition member formed so as to rise upward from the upper surface of the rear face passage forming member 71 to the vicinity of the face opening 23 and to extend parallel to the vehicle longitudinal direction. 74 is integrally formed. For this reason, the third cold air passage 53 is divided into left and right in the vehicle width direction by the rear face passage forming member 71 and the central partition member 74.

  Returning to FIG. 14, the end of the rear face passage forming member 71 on the upstream side of the air flow has a gap with the blower side partition member 62 and is close enough not to contact the blower side partition member 62. Yes. More specifically, a gap having a gap dimension larger than 0 and a maze structure is provided between the opposite ends of the rear face passage forming member 71 and the blower side partition member 62.

  Specifically, the end of the rear face passage forming member 71 on the upstream side of the air flow is formed in a substantially U-shaped cross section with the blower side partition member 62 side opened. Further, the end portion of the blower side partition member 62 enters the substantially U-shaped recess of the rear face passage forming member 71. At this time, the end of the blower side partition member 62 is not in contact with the end of the rear face passage forming member 71 on the upstream side of the air flow. For this reason, a maze-structured gap is formed between the end of the rear face passage forming member 71 on the upstream side of the air flow and the end of the blower side partition member 62.

  In the rear face mode in which the conditioned air is blown from the rear face outlet (not shown) toward the upper body side of the rear seat occupant, the rear face door 73 is rotated to a position where the rear face opening 72 is fully opened. In the rear face mode, the temperature can be adjusted by changing the opening degree of the air mix door 20 provided in the vehicle central region.

  As described above, in the present embodiment, in addition to the effects of the third embodiment, the first central hot air passage 42 is formed by the dividing wall portion 610 provided in the case 11, and the blower is separated by the blower side partition member 62. 3, a second central hot air passage 42 b is formed, and a rear face passage 70 is formed by a rear face passage forming member 71 provided in the case 11, so that the case 11 has a rear face opening 72. A dedicated passage for the blown air to pass through can be formed. In addition, by configuring the air mix door 20 provided in the vehicle right side region, the vehicle left side region, and the vehicle center region to be independently controllable, it is possible to independently control the temperature of the conditioned air blown to the rear seat side. It becomes.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. In the fifth embodiment, the vehicle air conditioner of the third embodiment adopts a control (eco-run control) that automatically stops the vehicle engine when the vehicle stops, such as waiting for a signal, in order to improve the fuel efficiency of the vehicle engine. This is applied to eco-run cars. In the eco-run car, the compressor (not shown) of the vapor compression refrigeration cycle (not shown) is also stopped along with the automatic stop of the vehicle engine. The vehicle air conditioner of the present embodiment includes a draft air conditioning mode in which air that does not pass through the evaporator 14 is blown out toward the vehicle interior when the compressor is stopped with the automatic stop of the vehicle engine.

  16 is a cross-sectional view of the indoor air conditioning unit 10 in the vehicle air conditioner according to the fifth embodiment, FIG. 17 is a cross-sectional view taken along the line II in FIG. 16, and FIG. 18 is a cross-sectional view taken along the line JJ in FIG.

  16 to 18, the solid line arrows indicate the flow of hot air heated by the heater core 15, and the broken line arrows indicate the flow of cold air cooled by the evaporator 14. Moreover, the dashed-two dotted line arrow in FIG. 16 has shown the circulating flow induced when the impeller 30 of the air blower 3 rotates.

  As shown in FIGS. 17 and 18, upstream bypass passages 80 that guide air to the blower 3 without passing through the evaporator 14 are provided on both outer sides of the case 11 in the vehicle width direction. A bypass door 81 is arranged on the vehicle front side of the upstream bypass passage 80. The bypass door 81 opens the upstream bypass passage 80 so that air flows toward the blower 3.

  The blower 3 includes a bypass partition member 83 that is disposed outside the blower side partition member 62 and partitions the blower side bypass passage 82 and the second hot air passage 42 that communicate with the upstream bypass passage 80. The blower side bypass passage 82 is disposed outside the second hot air passage 42. The bypass partition member 83 is disposed in parallel to the direction orthogonal to the axial direction of the impeller 30, and is configured to partition the air passage in the impeller 30 in the axial direction of the blower 3. Further, the bypass partition member 83 is formed of resin, and is integrally formed with the impeller 30 in this embodiment.

  The case 11 has a second bypass partition member 85 that is disposed outside the downstream case rib 63 and partitions the downstream bypass passage 84 that communicates with the blower side bypass passage 82 and the third hot air passage 43. . The downstream bypass passage 84 is configured to guide the air flowing in from the blower side bypass passage 82 to the face opening (not shown). The second bypass partition member 85 is made of resin and is formed integrally with the case 11.

  When the normal air conditioner is operated, the bypass door 81 is operated so as to be in the fully closed position of the upstream bypass passage 81 as shown in FIG. As a result, air does not flow into the upstream bypass passage 81.

  FIG. 19 is a cross-sectional view of the indoor air conditioning unit 10 in the draft air conditioning mode according to the fifth embodiment, and corresponds to FIG. In addition, the dashed-two dotted line arrow in FIG. 19 has shown the flow of the air which does not pass the evaporator 14. FIG.

  As shown in FIG. 19, in the draft air conditioning mode, the evaporator shut door 14b that opens and closes the inlet ventilation path of the evaporator 14 is in the fully closed position of the inlet ventilation path of the evaporator 14, and the bypass door 81 (FIG. (Not shown) is operated so as to be in the fully opened position of the upstream bypass passage 81. As a result, air is blown out from the face opening (not shown) toward the upper body of the passenger in the vehicle cabin via the upstream bypass passage 81, the blower side bypass passage 82 and the downstream bypass passage 84.

  As described above, in the present embodiment, in addition to the effects of the third embodiment, the upstream bypass passage 81 and the downstream bypass passage 84 are provided in the case 11, and the blower side bypass passage 82 is provided in the blower 3. Therefore, it is possible to form a dedicated passage through which air passes during the draft air conditioning mode.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 20 is an enlarged cross-sectional view showing the vicinity of the upstream case rib 61 and the blower side partition member 62 in the sixth embodiment, and corresponds to FIG.

  As shown in FIG. 20, the end 61 a on the downstream side of the air flow of the upstream case rib 61 protrudes toward the blower side partition member 62 at one end in the vehicle width direction. The other end side in the vehicle width direction of the end portion 62 a of the blower side partition member 62 protrudes toward the upstream case rib 61. Further, the end 62 a of the blower side partition member 62 is disposed so as not to contact the end 61 a of the upstream case rib 61 on the downstream side of the air flow. For this reason, a labyrinth-structured gap is formed between the end 61 a of the upstream case rib 61 on the downstream side of the air flow and the end 62 a of the blower side partition member 62.

  According to this embodiment, even if the air blower 3 operates and the impeller 30 rotates, the upstream case rib 61 and the air blower side partition member 62 can be prevented from contacting each other.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 21 is an enlarged cross-sectional view showing the vicinity of the upstream case rib 61 and the blower side partition member 62 in the seventh embodiment, and corresponds to FIG.

  As shown in FIG. 21, a gap formed so as to extend linearly is provided between the end portions of the upstream case rib 61 and the blower side partition member 62 facing each other. Specifically, the end surface 61a of the upstream case rib 61 on the downstream side of the air flow and the end surface of the end portion 62a of the blower side partition member 62 are parallel to the vehicle width direction. The end portion 62 a of the blower side partition member 62 is disposed so as not to contact the end portion 61 of the upstream case rib 61 on the downstream side of the air flow. For this reason, a gap extending in a straight line parallel to the vehicle width direction is formed between the downstream end 61 a of the upstream case rib 61 and the end 62 a of the blower side partition member 62.

  According to this embodiment, even if the air blower 3 operates and the impeller 30 rotates, the upstream case rib 61 and the air blower side partition member 62 can be prevented from contacting each other.

(Other embodiments)
In each of the above embodiments, the air conditioning unit 10 has been described as an example of a center-placed layout that is disposed at the substantially central portion in the vehicle width direction inside the instrument panel at the foremost part of the vehicle interior. For example, a semi-centered layout may be used.

  Moreover, although each said embodiment demonstrated the example using the sliding door as the air mix door 20, not only this but a plate door, a rotary door, etc. may be used as the air mix door 20. FIG.

  Moreover, you may combine each above-mentioned embodiment suitably in the possible range.

It is sectional drawing of the indoor air conditioning unit 10 in the vehicle air conditioner which concerns on 1st Embodiment. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is sectional drawing of the indoor air conditioning unit 10 in the vehicle air conditioner which concerns on 2nd Embodiment. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. It is the F section enlarged view of FIG. It is sectional drawing of the indoor air conditioning unit 10 at the time of face mode in 2nd Embodiment. It is sectional drawing of the indoor air-conditioning unit 10 at the time of foot mode in 2nd Embodiment. It is sectional drawing of the indoor air conditioning unit 10 in the vehicle air conditioner which concerns on 3rd Embodiment. It is sectional drawing of the indoor air-conditioning unit 10 at the time of the bilevel mode in 3rd Embodiment. It is sectional drawing of the indoor air conditioning unit 10 in the vehicle air conditioner which concerns on 4th Embodiment. It is GG sectional drawing of FIG. It is HH sectional drawing of FIG. It is sectional drawing of the indoor air conditioning unit 10 in the vehicle air conditioner which concerns on 5th Embodiment. It is II sectional drawing of FIG. It is JJ sectional drawing of FIG. It is sectional drawing of the indoor air conditioning unit 10 at the time of the draft air conditioning mode in 5th Embodiment. It is an expanded sectional view showing the neighborhood of upstream case rib 61 and fan side partition member 62 in a 6th embodiment. It is an expanded sectional view showing the neighborhood of upstream case rib 61 and fan side partition member 62 in a 7th embodiment.

Explanation of symbols

3 Blower 4 Hot air guide rib (guide means)
11 Case 14 Evaporator (cooling heat exchanger)
15 Heater core (heat exchanger for heating)
23 Face opening 24 Foot opening 30 Impeller 30a Rotating shaft 31 Electric motor 32 Stabilizer 300 Wing

Claims (10)

A case (11) forming an air passage through which air flows;
A cooling heat exchanger (14) disposed in the case (11) for cooling the air;
A heating heat exchanger (15) disposed in the case (11) for heating the air;
A blower (3) that is arranged on the downstream side of the air flow of the cooling heat exchanger (14) and the heating heat exchanger (15) and blows the air toward the vehicle interior;
A vehicle air conditioner that is arranged on the downstream side of the air flow of the blower (3) and includes a plurality of openings (22 to 24) that blows air out of the air passage into the vehicle interior,
The blower (3) includes an impeller (30) in which a plurality of blades (300) are disposed around a rotation shaft (30a), and an electric motor (31) that rotationally drives the impeller (30). A cross flow fan having a stabilizer (32) formed on the case (11) for preventing a reverse flow of the air flow and allowing air to pass through a cross section perpendicular to the rotating shaft (30a) of the impeller (30). Yes,
The rotating shaft (30a) is in parallel with the heating heat exchanger (15) ,
The case (11) includes a first hot air passage (41) through which air heated by the heating heat exchanger (15) passes through the air passage upstream of the blower (3). The first cool air passage (41) is divided into at least two parts in the vehicle width direction, while being divided into a first cold air passage (51) through which air cooled by the cooling heat exchanger (14) passes. An upstream partition member (61)
The blower (3) includes at least two second hot air passages (42) communicating an air passage in the impeller (30) with at least two first hot air passages (41), and the first Having at least two blower side partition members (62) for partitioning into the cold air passage (51) and the second cold air passage (52) communicating with the cold air passage (51);
An end (61a) on the downstream side of the air flow of the upstream partition member (61) has a gap with the blower side partition member (62), and is in contact with the blower side partition member (62). An air conditioner for vehicles that is close enough to not . The case (11) includes at least two third hot air passages (43) communicating the air passage downstream of the blower (3) with the at least two second hot air passages (42). And at least two downstream partition members (63) for partitioning into the third cold air passage (53) communicating with the second cold air passage (52),
An end of the downstream side partition member (63) on the upstream side of the air flow has a gap with the blower side partition member (62), and is not in contact with the blower side partition member (62). Close
Each of the at least two third hot air passages (53) and the third cold air passage (53) communicates with at least one of the plurality of openings (22 to 24). The vehicle air conditioner according to claim 1 . Ends facing each other of the downstream partition member (63) and the blower side partition member (62) are fitted in a state where a gap is formed between the end portions. The vehicle air conditioner according to claim 2 . A gap formed so as to extend linearly is provided between the opposing ends of the downstream partition member (63) and the blower side partition member (62). Item 3. The vehicle air conditioner according to Item 2 . Ends facing each other of the upstream partition member (61) and the blower side partition member (62) are fitted in a state where a gap is formed between the end portions. The vehicle air conditioner according to any one of claims 1 to 4 . A gap formed so as to extend linearly is provided between ends of the upstream partition member (61) and the blower side partition member (62) facing each other. Item 5. The vehicle air conditioner according to any one of Items 1 to 4 . The said air blower (3) is arrange | positioned on the extension line | wire of the said heat exchanger for heating (15), The vehicle air conditioner as described in any one of Claim 1 thru | or 6 characterized by the above-mentioned. The plurality of openings include a face opening (23) for blowing air blown from the blower (3) toward the upper body side of the passenger in the vehicle interior, and air blown from the blower (3) for passengers in the vehicle interior The vehicle air conditioner according to any one of claims 1 to 7, further comprising a foot opening (24) that blows out toward the foot side of the vehicle. On the downstream side of the air flow of the blower (3), the air heated by the heating heat exchanger (15) that has passed through the impeller (30) is guided to the foot opening (24) side. 9. A vehicle air conditioner according to claim 8 , characterized in that guide means (4) are provided. The guide means (4) extends from the edge of the foot opening (24) on the downstream side of the air flow toward the inner side of the case (11) and then bends toward the upstream side of the air flow. The vehicle air conditioner according to claim 9 , wherein the vehicle air conditioner is formed to extend.

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