JP2005324588A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the maximum cooling performance in an air conditioner for a vehicle of air mix manner. <P>SOLUTION: The inside of an air-conditioning case 14 is divided with two partition plates 27 into a central region 14b, a left region 14c, and a right region 14d in the vehicle lateral direction. Of the central region 14b, an air flow downstream section of a heater core 18 is formed as a back-seat-side air mix region for mixing warm air from the heater core 18 and cold air from a bypass passage. Of both left and right regions 14c and 14d, a downstream section of the heater core 18 is formed as a warm air passage through which the warm air from the heater core 18 flows toward the bypass passage. Of both left and right regions 14c and 14d, a section where the warm air from the warm air passage collides with the cold air from the bypass passage is formed as a front-seat-side air mix region 28a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air-mix type vehicle air conditioner that adjusts the air volume ratio of cold and warm air to adjust the temperature of air blown into the passenger compartment.

  Various types of air-mix type vehicle air conditioners of this type have been conventionally proposed (for example, see Patent Document 1). FIG. 9 shows a conventional apparatus described in Patent Document 1, in which cold air cooled by an evaporator 16 that forms a cooling heat exchanger is cooled by an air mix door 20 toward a heater core 18 that forms a heating heat exchanger. And a cold air flow toward the bypass passage 19 of the heater core 18.

Then, the hot air X from the hot air passage 40 on the downstream side of the heater core 18 and the cold air Y from the bypass passage 19 are mixed in the air mix region 41 to produce conditioned air at a desired temperature. The conditioned air at the desired temperature is distributed to one or more of the foot opening 21, the center face opening 22a, the side face opening 22b, and the defroster opening 23, and the desired temperature is controlled through the opening. Air-conditioned air is blown into the passenger compartment.
Japanese Patent Laid-Open No. 10-166838

  In the above-mentioned conventional apparatus, even if the various opening parts 21, 22a, 22b, 23 are opened and closed by the blowing mode doors 42, 43 and the blowing mode is changed, the cold air is always mixed in the air mix region 41 at a substantially constant position. Therefore, there is a problem that the ventilation resistance (pressure loss) of the air passage toward the center face opening 22a is increased by the guide shape for improving the air mixing property (mixing property) of the cold and warm air.

  Specifically, the air conditioning case 14 is provided with a guide wall 44 for guiding the warm air X from the warm air passage 40 to the front side of the vehicle, and the warm air X is opposed to the cold air Y from the bypass passage 19 from the opposite direction. To improve air mix performance. The guide wall 44 protrudes from the bypass passage 19 to the air passage toward the center face opening 22a, and the ventilation resistance (pressure loss) of the air passage increases.

  As a result, at the time of maximum cooling in which the bypass passage 19 is fully opened by the air mix door 20 and the ventilation path on the heater core 18 side is fully closed, the amount of cold air blown off decreases due to the increase in the ventilation resistance, and the maximum cooling performance is reduced. .

  In view of the above points, an object of the present invention is to improve the maximum cooling performance in an air mix type vehicle air conditioner.

In order to achieve the above object, according to the first aspect of the present invention, the warm air passing through the heating heat exchanger (18) and the cold air passing through the bypass passage (19) of the heating heat exchanger (18) are provided. The air volume ratio is adjusted by the door means (20) to adjust the temperature of air blown into the passenger compartment,
A center face opening (22a) for taking out the air blown out to the face side of the front seat occupant in the center of the vehicle interior, as the air outlet opening for blowing out the air whose temperature is adjusted by the door means (20);
Side face opening (22b) for taking out the air blown out to the face side of the front seat occupant at the left and right sides of the passenger compartment,
A foot opening (21) for taking out the air blown out to the feet of the front seat passenger in the passenger compartment,
A defroster opening (23) for taking out the air blown out to the window glass side in the vehicle interior;
And a vehicle air conditioner having a rear-seat-side outlet opening (33, 34) for taking out the air blown out to the rear-seat occupant side of the vehicle interior,
Within the air conditioning case (14), the air flow downstream region of the heating heat exchanger (18) and the region of the bypass passage (19) are arranged in the central region (14b) in the vehicle left-right direction by two partition plates (27). ), The left region (14c) and the right region (14d),
The rear seat side that mixes the warm air from the heating heat exchanger (18) and the cold air from the bypass passage (19) in the downstream area of the heating heat exchanger (18) in the central region (14b). It is formed as an air mix region (29), and this rear seat side air mix region (29) communicates with the rear seat side outlet opening (33, 34),
On the other hand, in the left and right side regions (14c, 14d), the warm air from the heating heat exchanger (18) flows toward the bypass passage (19) in the downstream portion of the air flow of the heating heat exchanger (18). Formed as a warm air passage (30),
Of the left and right side regions (14c, 14d), a portion where the warm air from the warm air passage (30) collides with the cold air of the bypass passage (19) is formed as a front seat side air mix region (28a),
The center face opening (22a) is arranged so as to communicate linearly with the downstream portion of the air flow of the cooling heat exchanger (16) through the central region (14b) of the bypass passage (19),
Further, the central region (14b) of the bypass passage (19) communicates with the hot air passage (30),
Further, the side face opening (22b), the foot opening (21), and the defroster opening (23) are arranged to communicate with the front seat side air mix region (28a).

  According to this, the ventilation resistance (pressure loss) of the air passage from the air flow downstream portion of the cooling heat exchanger (16) toward the center face opening (22a) is sufficiently reduced, and the air flow from the center face opening (22a) is reduced. The amount of blowing air can be increased effectively.

  That is, the front seat side air mix region (28a) for mixing the cold air of the air blown out from the side face opening (22b), the foot opening (21) and the defroster opening (23) on the front seat side has left and right sides. Since it is formed in the regions (14c, 14d), the central region (14b) of the bypass passage (19) that forms an air passage toward the center face opening (22a) is the front seat side air mix region (28a). It can be formed independently without being influenced by the form.

  In addition, the rear seat side air mix region (29) for mixing the cool and warm air blown out from the rear seat side outlet openings (33, 34) is the air in the heating heat exchanger (18) in the central region (14b). Since it is formed in the downstream portion of the flow, the central region (14b) of the bypass passage (19) can be formed independently without being affected by the form of the rear seat air mix region (29).

  Accordingly, the central region (14b) of the bypass passage (19) does not include a ventilation area reducing portion corresponding to the guide wall 44 of the prior art, and it is easy to secure a sufficient passage area. Since the center face opening (22a) is linearly communicated with the downstream portion of the air flow of the cooling heat exchanger (16) through the central region (14b) of the bypass passage (19), the flow is bent. There is no increase in ventilation resistance due to the above.

  Combined with these, the ventilation resistance (pressure loss) of the air passage toward the center face opening (22a) can be sufficiently reduced, and the amount of air blown from the center face opening (22a) can be effectively increased. Thereby, the maximum cooling performance can be effectively improved. If it is not necessary to improve the maximum cooling performance over the prior art, the passage area can be reduced by an amount corresponding to the improvement in the maximum cooling performance, and the air conditioner can be downsized.

  When the maximum cooling state is shifted to the temperature control region, the door means (20) is operated to the intermediate opening position so that the cold air flow in the bypass passage (19) has a temperature located in the left and right side regions (14c, 14d). The warm air from the wind passage (30) is mixed to control the temperature of the center face blowing air. Accordingly, in this case, the central region (14b) of the bypass passage (19) serves as an air mix region (a portion 28b in FIG. 2 described later), but the central region (14b) of the bypass passage (19). ), The hot and cold air can be mixed by the hot air being drawn from both the left and right sides of the cold air flow in the center.

  That is, even if a special hot air guide means such as the guide wall 44 of the prior art is not set, the cold air flows in the cold air flow form itself in which the hot air is caught from the left and right sides with respect to the cold air flow in the center. Wind can be mixed well.

  Therefore, even if the central region (14b) of the bypass passage (19) becomes the air mix region (28b) of the center face blowing air in the temperature control region, the ventilation resistance of the central region (14b) of the bypass passage (19). Will not increase.

  In addition, the front seat side air mix region (28a) is formed independently in the left and right side regions (14c, 14d) of the bypass passage (19), and the rear seat side air mix region (29) is the central region ( 14b), it is formed independently in the downstream portion of the air flow of the heat exchanger for heating (18), so even if the door means (20) for air mixing is at the same operating position, the front seat side air mixing The cool / warm air passages to both air mix regions (28a, 29) are designed so that the cool air distribution ratio in the region (28a) and the cool air distribution ratio in the rear seat air mix region (29) are different. Thus, the front seat side air temperature and the rear seat side air temperature can be tuned to different temperatures.

According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the vehicle includes a face door (25) for opening and closing the center face opening (22a) and the side face opening (22b).
The face door (25) has a first plate door portion (25b) for opening and closing the center face opening (22a) and a second plate door portion (25c) for opening and closing the side face opening (22b). Composed of board doors,
The first plate door portion (25b) protrudes in the upstream direction of the cold air flow from the bypass passage (19) at the operation position where the center face opening (22a) is opened, and the cold air flow from the bypass passage (19) is centered. It is characterized by branching into a flow toward the face opening (22a) and a flow toward the rear seat air mix region (29).

  As a result, the first plate door portion (25b) of the face door (25) itself can also serve as a branch function of the cold air flow toward the rear seat air mix region (29), and the rear seat side can be configured with a simple configuration. The air mix function can be demonstrated well.

According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the vehicle includes a defroster door (26) for opening and closing the defroster opening (23),
The defroster door (26) integrally connects the first plate door portion (26b) and the second plate door portion (26c) on both sides in the radial direction of the rotation shaft (26a), and the rotation shaft (26a) is the center. The first and second plate door portions (26b, 26c) are constituted by rotatable butterfly doors,
The defroster opening (23) is opened and closed by the first plate door (26b), and when the first plate door (26b) is operated to the opening position of the defroster opening (23), the second plate door The portion (26c) protrudes into the cold air flow in the bypass passage (19), and guides the cold air in the bypass passage (19) in the direction of the hot air from the hot air passage (30).

  According to this, in the blowing mode in which both the defroster opening (23) and the foot opening (21) are simultaneously opened, the second plate door indicates that a large amount of cold air flows unbalanced toward the defroster opening (23). This can be prevented by the cold air guide action of the portion (26c). Therefore, in the blowing mode in which both the defroster opening (23) and the foot opening (21) are simultaneously opened, the problem of so-called cool diff, in which the defroster blowing temperature is excessively lowered as compared with the foot blowing temperature, is solved. In addition, the window glass anti-fogging performance can be secured.

  According to a fourth aspect of the present invention, in the vehicle air conditioner according to any one of the first to third aspects, a portion corresponding to the installation range of the partition plate (27) is separated from the air conditioning case (14). It is characterized by comprising a divided case body (14e).

  According to this, by changing various parts of the air-conditioning case (14) only in the separate divided case body (14e), it is possible to change to the left and right independent control system as in claim 6 described later, Various variations such as a change to a dedicated air conditioner for the front seat that does not have the blowout openings (33, 34) can be easily implemented.

  According to a fifth aspect of the present invention, in the vehicle air conditioner according to the fourth aspect, the partition plate (27) is integrally formed with the divided case body (14e).

  Accordingly, the divided case body (14e) and the partition plate (27) can be manufactured efficiently and at low cost by integral molding, and the assembling work of the split case body (14e) and the partition plate (27) is facilitated.

According to a sixth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fifth aspects, an air flow downstream side of the cooling heat exchanger (16) is disposed inside the air conditioning case (14). A central partition plate (35) that partitions the vehicle left side passage (36) and the vehicle right side passage (37);
The door means (20) is constituted by a vehicle left side door means and a vehicle right side door means that can be independently operated in the vehicle left side passage (36) and the vehicle right side passage (37).

  Thereby, the blowout temperature blown out to the left side area of the vehicle interior and the blowout temperature blown out to the right side area of the vehicle compartment can be controlled independently by the vehicle left side door means and the vehicle right side door means, and the function of the left and right independent control system can be obtained. Can do.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
1 to 4 show the indoor unit 10 of the vehicle air conditioner according to the first embodiment. FIG. 1 is a schematic perspective view of the entire indoor air conditioning unit 10, and FIG. It is sectional drawing of an A line position.

  3 is a specific cross-sectional view of the indoor air-conditioning unit 10 at the center position in the left-right direction of the vehicle, and FIG. 4 is a specific cross-sectional view of the indoor air-conditioning unit 10 at a lateral position in the left-right direction of the vehicle. 1 to 4 indicate the directions in the vehicle mounted state.

  The indoor air conditioning unit 10 is disposed at a substantially central portion in the vehicle left-right direction inside the instrument panel (instrument panel, not shown) in the front of the vehicle interior. 3 and 4, the vehicle body side partition member 11 separates the engine room 12 and the vehicle interior 13 of the vehicle, and the indoor air conditioning unit 10 is disposed immediately behind the vehicle body side partition member 11. .

  The indoor air-conditioning unit 10 includes a resin air-conditioning case 14 that forms a passage for air flowing toward the passenger compartment. The air-conditioning case 14 is actually formed as a plurality of divided case bodies for convenience of resin molding, assembly of built-in parts, and the like, and the plurality of divided case bodies are integrated by fastening means such as screws and clips. The air-conditioning case 14 is configured by fastening to.

  And in this embodiment, it is the structure which has arrange | positioned the air blower part 15 integrally in the upper part of the vehicle front side among the air-conditioning cases 14. FIG. 3 and 4, the blower unit 15 houses a centrifugal blower fan 15a in a scroll casing 15b, and the blower fan 15a is rotationally driven by a motor (not shown).

  More specifically, a motor is disposed at the center of the blower unit 15 in the left-right direction of the vehicle, and a blower fan 15a is disposed on both the left and right sides (both sides in the axial direction) of the motor. Then, suction ports (not shown) of the left and right blowing fans 15a are formed on the left and right sides of the scroll casing 15b, and an inside / outside air switching box (not shown) is connected to each of the left and right suction ports, The introduced air (inside air or outside air) from the inside / outside air switching box is blown by the blower fans 15a on both the left and right sides.

  Since the blowing passage 15c of the scroll casing 15b is formed from the upper side to the lower side as shown in FIGS. 3 and 4, the blowing air of the blowing fan 15a is inside the air conditioning case 14 as shown by the arrow a in FIGS. It flows from top to bottom in the forefront.

  An evaporator 16 serving as a cooling heat exchanger is disposed in a lower portion of the air conditioning case 14 on the front side of the vehicle. Here, the evaporator 16 has a substantially rectangular thin shape and is inclined with a minute inclination angle θ with respect to the horizontal plane. More specifically, the evaporator 16 is inclined so that the front end of the vehicle is on the upper side and the rear end of the vehicle is on the lower side, so that the blown air from the outlet passage 15c is placed below the evaporator 16. Inflow space 17 is formed.

  As is well known, the evaporator 16 has a heat exchange core portion 16a constituted by a laminated structure of a plurality of flat tubes and corrugated heat transfer fins, and this heat exchange core portion 16a is used as air in the lower inflow space 17. The total amount passes through from the bottom to the top as shown by arrow b. Here, the evaporator 16 is a low pressure side heat exchanger of a vapor compression refrigerator as is well known, and cools the passing air by absorbing the low pressure refrigerant from the passing air indicated by the arrow b and evaporating it.

  In the air conditioning case 14, a heater core 18 is disposed on the downstream side of the air flow of the evaporator 16. More specifically, the heater core 18 is arranged on the upper side of the evaporator 16 and biased toward the vehicle rear side portion. Thereby, in the air conditioning case 14, a bypass passage 19 is formed in the vehicle front side portion of the heater core 18 so as to bypass the heater core 18 and the evaporator passing air (cold air) flows as shown by an arrow c.

  The heater core 18 is inclinedly arranged along the inclination of the evaporator 16 with an inclination angle larger than the inclination angle θ of the evaporator 16. Here, the heater core 18 is a heat exchanger for heating that heats air using warm water (engine cooling water) from a vehicle engine (not shown).

  The heater core 18 also has a heat exchange core portion 18a configured by a laminated structure of a plurality of flat tubes and corrugated heat transfer fins. The evaporator air passes through the heat exchange core portion 18a as indicated by an arrow d in front of the vehicle. It passes diagonally upward from the side to the rear side.

  Note that an electric heater 180 is disposed in parallel with the heater core 18 at a position immediately after the heater core 18. The electric heater 180 is an auxiliary heating means that immediately heats the air blown out in the passenger compartment by being energized and generating heat when it is heated in winter and when the hot water temperature of the vehicle engine is low.

  In the present embodiment, an air mix door 20 composed of a film type door is disposed in a space between the evaporator 16 and the heater core 18 so as to be movable in the vehicle front-rear direction. The air mix door 20 is made of a flexible thin film resin film material, and has an air passage opening 20a (a broken line portion in FIGS. 3 and 4) in the middle of the moving direction.

  Both end portions of the resin film material constituting the air mix door 20 are connected to the winding shafts 20b and 20c, respectively, and wound around the winding shafts 20b and 20c, or conversely sent out from the winding shafts 20b and 20c ( Rewinded). The two winding shafts 20b and 20c are rotated in conjunction with a door driving device (servo motor or the like) (not shown). The intermediate guide shaft 20d guides the intermediate bending portion of the resin film material.

  The width dimension (dimension in the vehicle left-right direction) of the resin film material constituting the air mix door 20 is equal to the width dimension of the air passage in the air conditioning case 14 (dimension in the vehicle left-right direction). Since the opening 20a is opened so as to leave both left and right edges of the resin film material, the width dimension of the opening 20a (the dimension in the vehicle left-right direction) is slightly smaller than the width dimension of the resin film material.

  The air mix door 20 has its opening 20a moved in the vehicle front-rear direction to adjust the opening area of the heater core 18 side ventilation path and the opening area of the bypass passage 19 side. As a result, the air mix door 20 adjusts the air volume ratio between the warm air (arrow d) passing through the heat exchanging portion 18a of the heater core 18 and the cold air (arrow c) passing through the bypass passage 19 to blow out air into the vehicle interior. Adjust the temperature.

  In FIGS. 3 and 4, the opening 20 a of the air mix door 20 moves to the most front side of the vehicle to fully open the bypass passage 19 by the opening 20 a and completely opens the airflow path on the heater core 18 side by the film film portion of the air mix door 20. The maximum cooling state is shown. When the opening 20a of the Amix door 20 moves to the rearmost side of the vehicle, the heater 20 is fully opened by the opening 20a and the bypass passage 19 is fully closed by the film film portion of the air mix door 20. .

  Next, the arrangement of the blowout opening that blows air into the passenger compartment will be described. As shown in FIG. 2, the foot openings 21 are disposed on the left and right side walls 14 a of the air conditioning case 14. In FIG. 2, the heater core 18, the foot opening 21, and the defroster opening 23 described later are not shown on the AA cross-section indicating line in FIG. 1 by phantom lines.

  The left and right foot openings 21 blow out air to the feet of the front seat occupant in the passenger compartment via a foot outlet duct (not shown). More specifically, the foot openings 21 are as shown in FIGS. The heater core 18 and the bypass passage 19 are opened above the vehicle rear side portion of the blower unit 15 above the heater core 18 and the bypass passage 19. The opening shape of the foot opening 21 is a fan-like shape in which the opening area increases from the lower side toward the upper side.

  As shown in FIGS. 1 and 2, the face opening includes a center face opening 22a located at the center of the air-conditioning case 14 in the left-right direction of the vehicle, and side face openings located on both left and right sides of the center face opening 22a. 22b. Both the face openings 22a and 22b are formed over substantially the entire area of the air conditioning case 14 in the left-right direction of the vehicle at a location above the foot opening 21 in the air conditioning case 14.

  Here, the center face opening 22a is connected to a center face air outlet disposed in the center in the left-right direction of the front part of the vehicle instrument panel via a center face duct (not shown). Air is blown out to the face side of the front seat occupant.

  Also, the left and right side face openings 22b are connected to side face outlets disposed at the left and right ends of the front part of the vehicle instrument panel via side face ducts (not shown). Air is blown out to the face side of the front seat occupant.

  The center face opening 22a and the side face opening 22b are both rectangular in shape, but the center face opening 22a is larger in the vehicle front-rear direction than the side face opening 22b. That is, the dimension L1 (FIG. 3) in the vehicle front-rear direction of the center face opening 22a is about twice as large as the dimension L2 (FIG. 4) in the vehicle front-rear direction of the side face opening 22b. Therefore, the opening shape of the entire face opening including both the center face opening 22a and the side face opening 22b is convex.

  The defroster opening 23 is disposed in the vehicle front side of the left and right side face openings 22 b in the air conditioning case 14. Therefore, the defroster opening 23 is offset from the center face opening 22a on both the left and right sides of the projecting portion of the center face opening 22a toward the vehicle front side.

  The defroster opening 23 is connected to a defroster outlet on the upper surface of the vehicle instrument panel via a defroster duct (not shown), and air is blown out from the defroster outlet toward the inner surface of the vehicle front window glass.

  Corresponding to the left and right foot openings 21, left and right foot doors 24 are rotatably provided along the inner surfaces of the left and right side walls 14a. The left and right foot doors 24 are constituted by fan-shaped plate doors that can rotate around a rotation shaft 24a (FIGS. 3 and 4). Here, the rotating shaft 24a is disposed at the lower portion of the foot opening 21 so as to extend in the vehicle left-right direction, and the left and right foot doors 24 are integrally connected by the rotating shaft 24a.

  3 and 4 illustrate a state in which the foot door 24 rotates toward the vehicle front side of the foot opening 21 to fully open the foot opening 21. The foot door 24 fully closes the foot opening 21 by rotating the foot door 24 from the rotational position of FIGS.

  Inside the air conditioning case 14, a face door 25 is rotatably provided at a portion immediately below the center face opening 22a and the side face opening 22b. As shown in FIG. 5A, the face door 25 includes a first plate door portion 25b that opens and closes the center face opening 22a at the central portion in the axial direction of the rotation shaft 25a, and a shaft of the first plate door portion 25b. The 2nd board door part 25c which opens and closes the side face opening part 22b is arrange | positioned at the direction both sides. Therefore, the shape of the entire plate door including the first plate door portion 25b and the second plate door portions 25c on the left and right sides is formed in a convex shape.

  As shown in FIGS. 3 and 4, the rotation shaft 25 a of the face door 25 is arranged so as to extend in the left-right direction of the vehicle at the rearmost part of the vehicle immediately below both the face openings 22 a and 22 b. 3 and 4, a broken line arc 25d indicates the rotation operation range of the first plate door portion 25b of the face door 25, and a broken line arc 25e indicates the rotation operation range of the second plate door portion 25c of the face door 25. Yes.

  The left and right defroster doors 26 that open and close the left and right defroster openings 23 are disposed inside the air conditioning case 14 at the vehicle front side portion of the second plate door portion 25 c of the face door 25.

  The left and right defroster doors 26 are constituted by butterfly doors as shown in FIGS. That is, the defroster door 26 integrally connects the first plate door portion (upper plate door portion) 26b and the second plate door portion (lower plate door portion) 26c on both the upper and lower sides in the radial direction of the rotation shaft 26a. The first and second plate door portions 26b and 26c are configured as a butterfly door that rotates integrally around the shaft 26a.

  As shown in FIGS. 3 and 4, the rotating shaft 26 a is disposed adjacent to the vehicle rear side portion of the scroll casing 15 b of the blower 15 and is disposed so as to extend in the left-right direction of the vehicle. Since the first plate door portion 25b of the face door 25 is loosely fitted in the space between the left and right defroster openings 23, the left and right defroster doors 26 and the first plate door portion 25b rotate independently without interfering with each other. It is supposed to be.

  The solid line position of the defroster door 26 shown in FIG. 4 indicates a state in which the defroster opening 23 is fully closed by the upper first plate door portion 26b, and the broken line position indicates the defroster opening portion by the upper first plate door portion 26b. 23 shows a fully open state. The second plate door portion 26c on the lower side of the defroster door 26 serves as a cold air guide for improving the mixability of the cold and hot air when the defroster opening 23 is opened, as will be described later.

  The foot door 24, the face door 25, and the defroster door 26 described above are front-seat-side blowing mode doors that switch the blowing mode of the blowing air to the front-seat region in the vehicle interior. The rotary shafts 24a, 25a, and 26a are connected to a common door driving device (servo motor or the like) through a link mechanism (not shown) so as to be interlocked.

  In the present embodiment, the front seat side blowing mode doors 24 to 26 are configured to switch and set a well-known face mode, bilevel mode, foot mode, foot defroster mode, and defroster mode as the front seat blowing mode. It has become.

  Next, the air passage partition structure inside the air conditioning case 14 will be described. In the present embodiment, as shown in FIGS. 1 and 2, two partition plates 27 are arranged in the air conditioning case 14 in parallel in the vertical direction, and the rear side region of the heater core 18 (in the inner space of the air conditioning case 14 ( The air flow downstream region) and the region of the bypass passage 19 (the region above the heater core 18) are divided into a central region 14b, a left region 14c, and a right region 14d in the vehicle left-right direction by two partition plates 27.

  A first air mix region 28a (FIGS. 2 and 4) on the front seat side is formed in the vicinity of the opening position of the foot opening 21 (upper portion of the heater core 18) of the left and right side regions 14c and 14d. The second air mix region 28b (FIG. 2) on the front seat side is formed in the region of the bypass passage 19 (above the heater core 18) in the central region 14b.

  The second air mix area 28b on the front seat side is auxiliary for the center face blowing air as will be described later. Further, a rear seat side air mix region 29 (FIGS. 2 and 3) is formed in the rear portion of the heater core 18 in the central region 14b.

  The installation range of the two partition plates 27 is the shaded area in FIG. 6, specifically, the range from the upper part of the heater core 18 (near the opening position of the foot opening 21) to the rear side area of the heater core 18. It is. The upper edge portion of the partition plate 27 is set so as to be located outside the rotational operation range of the first plate door portion 25b of the face door 25 to avoid interference between the partition plate 27 and the first plate door portion 25b. It is like that.

  Note that the partition plate 27 may be a single resin-molded plate member incorporated into the air conditioning case 14 or may be integrally formed with a divided case body constituting the air conditioning case 14.

  Of the regions 14c and 14d on both the left and right sides partitioned by the two partition plates 27, the rear region of the heater core 18 is, as shown in FIG. 4, the warm air that has passed through the heater core 18 is directed to the upper bypass passage 19 side. A hot air passage 30 is formed to flow toward. The warm air from the warm air passage 30 is mixed with the cold air in the bypass passage 19 in the vicinity of the foot opening 21 above the heater core 18. Thus, the front seat side first air mix region 28a is formed in the region of the bypass passage 19 (near the foot opening 21) in the left and right side regions 14c, 14d inside the air conditioning case 14.

  A guide wall 31 a (FIG. 4) for improving the air mix property of the cool / warm air is formed above the warm air passage 30. This guide wall 31a is formed in the upper part of the heater core 18 in the left and right regions of the vehicle rear side wall surface of the air conditioning case 14, and guides the warm air from the warm air passage 30 to the front side of the vehicle at the upper part of the heater core 18. The hot air collides with the cold air flow in the bypass passage 19 from the reverse direction. Thereby, the air mix property (mixability) of the cool / warm air in the front seat side first air mix region 28a is improved.

  On the other hand, a guide wall 31b (FIG. 3) similar to the guide wall 31a is formed above the rear seat side air mix region 29 in the central region 14b partitioned by the two partition plates 27. The guide wall 31b plays a role of smoothly guiding cool air c2 described later toward the rear seat air mix region 29.

  A rear seat side air outlet passage 32 (FIG. 3) is formed in the lower portion of the rear seat side air mix region 29 in the central region 14 b, and the rear seat side air outlet passage 32 has a rear seat side face opening 33 and The rear seat side foot opening 34 is open. The rear seat side face opening 33 and the rear seat side foot opening 34 are opened and closed by a common rear seat blowing mode door (not shown).

  The rear-seat-side outlet mode door has a state in which the rear-seat-side face opening 33 and the rear-seat-side foot opening 34 are individually opened, and a state in which both the rear-seat-side openings 33 and 34 are simultaneously opened. And a rear seat side shut state in which both rear seat openings 33 and 34 are simultaneously closed.

  A rear seat face duct (not shown) is connected to the rear seat face opening 33, and conditioned air (mainly cool air) is supplied from the rear seat face outlet provided at the front end of the rear seat face duct to the rear seat. It blows out toward the passenger's face. Further, a rear seat side foot duct (not shown) is connected to the rear seat side foot opening 34, and conditioned air (mainly warm air) is supplied from a rear seat side foot outlet provided at the tip of the rear seat side foot duct. It blows out toward the feet of the rear passengers.

  Next, the operation of the present embodiment in the above configuration will be described for each of various blowing modes.

(1) Face mode The front seat side face door 25 is operated to the position of the solid line in FIGS. 3 and 4 to fully open the front seat side center face opening 22a and the front seat side face face opening 22b. The defroster door 26 is also operated to the solid line position in FIGS. 3 and 4 to fully close the defroster opening 23. Further, the foot door 24 is operated from the position indicated by the solid line in FIGS. 3 and 4 to a position overlapping the foot opening 21 to fully close the front seat side foot opening 21.

  On the other hand, the rear seat face opening 33 is fully opened and the rear seat foot opening 34 is fully closed by a rear seat blowing mode door (not shown).

  In such a face mode state, when the motor (not shown) of the blower unit 15 is energized and the blower fan 15a is driven to rotate in the direction of the arrow, the inside air or the outside air is sucked from an inside / outside air switching box (not shown). Is blown in the scroll casing 15b by the blower fan 15a, and the blown air flows from the upper side to the lower side as indicated by the arrow a in FIGS.

  This blown air passes through the evaporator 16 from the lower side to the upper side as indicated by the arrow b and is cooled to become cold air. Now, when the air mix door 20 is operated to the intermediate temperature control position, the opening 20a of the air mix door 20 moves to the vehicle rear side from the position of FIGS. 3 and 4, and the bypass passage 19 and the heater core 18 are opened by the opening 20a. Open both side ventilation paths at the same time. Thereby, a part of the cool air c after passing through the evaporator 16 flows through the bypass passage 19, and the remaining cool air d flows into the heater core 18 side ventilation path and is heated.

  Here, the downstream area (rear area) of the bypass passage 19 and the heater core 18 is divided into three areas 14b, 14c, and 14d in the vehicle left-right direction by two partition plates 27. In the central region 14b in the left-right direction of the vehicle, as shown in FIG. 3, the cool air c in the bypass passage 19 is separated from the flow above and below the first plate door portion 25b by the partitioning action of the first plate door portion 25b of the face door 25. Branches into the flow.

  That is, the cool air flow c1 that passes through the upper side of the first plate door portion 25b and goes to the center face opening 22a, and the cool air flow that runs diagonally downward through the lower side of the first plate door portion 25b and goes to the downstream side of the heater core 18. Branch to c2.

  The latter cold air c <b> 2 collides and mixes with the hot air e passing through the heater core 18 at a right angle in the rear seat air mix region 29 downstream of the heater core 18. The cold air f can be obtained at a desired temperature by mixing the cold air and the hot air, and the cold air f is passed through the rear seat side air passage 32, the rear seat face opening 33, and the rear seat face duct (not shown). Pass through and blow out from the rear seat face outlet (not shown) to the face side of the rear seat occupant.

  On the other hand, in the left and right regions 14c and 14d partitioned by the two partition plates 27, the cool air c after passing through the evaporator 16 passes through the bypass passage 19 and the cool air d passes through the heater core 18 side air passage. Fork.

  In the left and right regions 14c and 14d, the lower end portion of the downstream region (rear region) of the heater core 18 is not communicated with the rear-seat blowout passage 32 and is closed, so the hot air g that has passed through the heater core 18 is blocked. The warm air passage 30 is raised and headed toward the bypass passage 19 side. That is, the warm air g forms a flow toward the vehicle front side by the guide wall 31a.

  Therefore, this hot air flow g collides with and mixes with the cold air c in the upper part of the heater core 18 (near the foot opening 21) in the left and right regions 14c and 14d. The cold air h having a desired temperature is made by mixing the cold air and the hot air. As a result, the first air mix region 28a on the front seat side is formed above the heater core 18 in the left and right regions 14c and 14d (near the foot opening 21).

  The cold air h having the desired temperature passes through the air passage between the first plate door portion 26b on the upper side of the defroster door 26 and the second plate door portion 25c of the face door 25, which are substantially parallel, and opens on the side face. It flows linearly toward the portion 22b. Then, the cool air h having a desired temperature passes through the side face duct (not shown) from the side face opening 22b and passes through the side face air outlet (not shown) to the face side of the front seat occupant at the left and right sides of the vehicle interior. Blow out.

  By the way, the upper edges of the two partition plates 27 are positioned outside the rotational operation range of the first plate door portion 25b of the face door 25 as shown in FIG. 14d communicates with the bypass passage 19 in the central region 14b (that is, the air passage toward the center face opening 22a).

  Thereby, a part of the warm air g of the warm air passage 30 on the left and right sides is caught in the cold air flow c1 toward the center face opening 22a in the central region 14b, and the hot air g and the cold air flow c1 are mixed, Create cold air i at the desired temperature. The area where the warm air g and the cold air flow c1 are mixed is the second air mix area 28b on the front seat side.

  The cool air i having the desired temperature flows into the center face opening 22a, passes through the center face duct (not shown), and passes through the center face outlet (not shown) to the face of the front seat occupant at the center of the vehicle interior. Blow out to the club side.

  By the way, in the face mode described above, when the maximum cooling performance is exhibited as at the start of cooling, the air mixing door 20 is the maximum at which the opening 20a moves most forward of the vehicle as shown in FIGS. Operate to the cooling position.

  Then, the bypass passage 19 is fully opened by the opening 20 a and the heater core 18 side ventilation path is fully closed by the film film portion of the air mix door 20. As a result, the entire amount of the cool air after passing through the evaporator 16 flows through the bypass passage 19 and is not heated by the heater core 18, so that the air blown into the passenger compartment can be cooled to the maximum.

  The cold air that has passed through the evaporator 16 passes through the front seat side face openings 22a and 22b and the rear seat face opening 33 as it is and blows out to the front and rear sides of the vehicle interior. And the motor for driving (not shown) of the air blower part 15 is rotated at the maximum speed, and the maximum cooling performance is exhibited by setting the air flow rate of the air blower part 15 to the maximum.

  In the present embodiment, in particular, in the central region 14b, it is possible to reduce the airflow resistance of the cold air passage that passes through the formation portion of the bypass passage 19 and heads toward the center face opening 22a, thereby increasing the center face blowing air amount. The maximum cooling performance can be effectively improved.

  That is, the inside of the air-conditioning case 14 is partitioned by the two partition plates 27 into a central region 14b in the left-right direction of the vehicle and regions 14c and 14d on both the left and right sides. The air-seat area 29 on the rear seat side is formed, and the first air-mix areas 28a and 28a on the front seat side are formed in the part where the bypass passage 19 is formed (upper part of the heater core 18) in the left and right areas 14c and 14d. The conditioned air mixed in the first air mix regions 28a, 28a is blown out to the front seat side foot opening 21, the front seat side side face opening 22b, and the defroster opening 23 side.

  As a result, in the central region 14b, the formation part of the bypass passage 19 takes into consideration the air mixing characteristics of the foot blowing air on the front seat side, the side face blowing air, the defroster defroster blowing air, and the rear seat blowing air. Without any modification, the cooling air passage can be configured as a dedicated cool air passage for the front seat side center face opening 22a.

  Therefore, in the central region 14b, the cold air passage is straight from the portion immediately after the evaporator 16 toward the front seat side center face opening 22a without setting the protruding shape of the guide wall 42 as in the prior art. It is possible to configure with a shortest distance and a sufficiently large passage area. Thereby, compared with what forms the air mix area | region 41 only in one place in a specific position like the prior art, the center face blowing air quantity at the time of maximum cooling can be increased effectively, and maximum cooling performance can be improved effectively. .

  In the central region 14b, the portion where the bypass passage 19 is formed forms the second air mix region 28b for the center face blowing air in the temperature control state as described above. In the formation site, the hot and cold air can be mixed well by part of the hot air g from both the left and right sides of the cold air flow c1 in the center.

  For this reason, even if it does not set the special warm air guide means like the guide wall 44 of a prior art, the warm air flow form that the warm air g is drawn in from the right and left sides with respect to the cold air flow c1 of the center part. Cool and warm air can be mixed well by itself.

  Therefore, even if the central region 14b of the bypass passage 19 becomes the air mixing region 28b of the center face blowing air, the ventilation resistance of the central region 14b of the bypass passage 19 does not increase.

(2) Bi-level mode FIGS. 3 and 4 show the state of the bi-level mode. That is, in the bi-level mode, the front seat side face door 25 is operated to the position indicated by the solid line in FIGS. 3 and 4 in the same manner as in the face mode, so that the front seat side center face opening 22a and the front seat side side face opening 22b are opened. Fully open. The defroster door 26 is also operated to the solid line position in FIGS. 3 and 4 to fully close the defroster opening 23. And the foot door 24 is also operated to the solid line position of FIG. 3, 4, and the front seat side foot opening part 21 is fully opened.

  As a result, the conditioned air of the desired temperature mixed in the front seat side first air mix region 28a of the left and right side regions 14c, 14d passes through the front seat side face face opening 22b and the front seat side foot opening 21 to the front of the vehicle interior. Blow out to the upper and lower sides of the seat side. At the same time, the conditioned air of the desired temperature mixed in the front seat side second air mix region 28b located above the heater core 18 in the central region 14b passes through the center face opening 22a and is located on the front seat side of the vehicle interior. Blow out to the upper side (occupant face side).

  Therefore, the air-conditioning wind at a desired temperature (usually an intermediate temperature range) is blown out to both the upper and lower sides of the front seat side of the vehicle interior, and the front seat side of the vehicle interior can be air-conditioned. Similarly, at the rear seat side, both the rear seat face opening 33 and the rear seat foot opening 34 are simultaneously opened by a rear seat blowing mode door (not shown). The mixed air-conditioning air at a desired temperature is blown out to both the upper and lower sides of the vehicle interior rear seat, so that the vehicle interior rear seat can be air-conditioned.

  By the way, the front seat side first air mix region 28a is formed in the vicinity of the front seat side foot opening 21, and the conditioned air mixed here is formed between the front seat side foot opening 21 and the front seat side side face opening 22b. Since it is distributed to both, the front seat foot blowing temperature and the front seat side face blowing temperature are equivalent in the bi-level mode.

  On the other hand, the blowing temperature of the front seat side center face opening 22a is lower than the blowing temperature of the front seat side face face opening 22b for the following reason. The front seat side center face opening 22a has a larger opening area than the front seat side side face opening 22b and the front seat side foot opening 21, and the length of the center face duct (not shown) is the side face duct (not shown). It is significantly shorter than the length of (not shown). Further, the cool air passage toward the front seat side center face opening 22 a is straight and does not have a sharp bend like the passage toward the front seat side foot opening 21.

  For these reasons, the ventilation resistance of the cold air flow toward the front seat side center face opening 22 a is significantly smaller than the ventilation resistance of the cold air flow toward the front seat side face opening 22 b and the front seat foot opening 21. As a result, the cold air ratio in the front seat side second air mix region 28b becomes higher than that in the front seat side first air mix region 28a, and the blowout temperature of the front seat side center face opening 22a becomes the front seat side side. It becomes lower than the blowing temperature of the face opening 22b.

  In the bi-level mode, it is usually used in the middle season of spring and autumn, and the outside air temperature is lowered compared with the cooling in the summer, and accordingly, the window glass temperature is also lowered. The side window glass of the vehicle is cooled by blowing out the low temperature air, and the side window glass is likely to be fogged.

  In such a case, according to the present embodiment, the air-conditioning feeling desired by the occupant is ensured by making the blowing temperature of the front seat side center face opening 22a lower than the blowing temperature of the front seat side face face opening 22b. However, by making the blowing temperature of the front seat side face face opening 22b higher than the blowing temperature of the front seat side center face opening 22a, the occurrence of fogging of the side window glass of the vehicle can be suppressed.

  In addition, the tendency that the blowing temperature of the front seat side center face opening 22a is lower than the blowing temperature of the front seat side face opening 22b also occurs in the face mode.

(3) Foot mode The front seat side face door 25 is operated to the position of the broken line in FIGS. 3 and 4 to fully close the front seat side center face opening 22a and the front seat side face face opening 22b. On the other hand, the foot door 24 is operated to the solid line position in FIGS. 3 and 4 to fully open the front seat side foot opening 21. The defroster door 26 is operated to the position indicated by the solid line in FIGS. 3 and 4 so that the defroster opening 23 is fully closed, or the defroster door 26 is operated to a small opening position where the defroster opening 23 is slightly opened.

  As a result, the conditioned air (warm air) of the desired temperature mixed in the front seat side first air mix region 28a of the left and right side regions 14c, 14d passes through the front seat side foot opening 21 and is on the passenger foot side on the front seat side of the vehicle interior. To heat the front side of the passenger compartment. When opening a small amount of the defroster opening 23, the conditioned air (warm air) of the desired temperature mixed in the front seat side first air mix region 28a passes through the defroster opening 23 and blows out to the vehicle front window glass side. The antifogging effect of the vehicle front window glass is demonstrated.

  In addition, the rear seat side face opening 33 is fully closed by a rear seat side blowing mode door (not shown), and the rear seat side foot opening 34 is fully opened, so that the conditioned air (warm air) at a desired temperature is also provided on the rear seat side. Blows out to the passenger's feet and can heat the rear seat side of the passenger compartment in foot mode.

(4) Foot defroster mode The front seat face door 25 is operated to the position indicated by the broken line in FIGS. 3 and 4 to fully close the front seat center face opening 22a and the front seat side face opening 22b. On the other hand, the foot door 24 is operated to the solid line position in FIGS. 3 and 4 to fully open the front seat side foot opening 21. Further, the defroster door 26 is operated to the position of the broken line in FIGS. 3 and 4 to fully open the defroster opening 23.

  Thereby, the conditioned air (warm air) of the desired temperature mixed in the front seat side first air mix region 28a of the left and right side regions 14c, 14d is distributed to both the front seat side foot opening 21 and the defroster opening 23. The

  Accordingly, the conditioned air (warm air) at a desired temperature is blown out through the front seat side foot opening 21 to the passenger's foot side on the front side of the vehicle interior to heat the front seat side of the vehicle interior. At the same time, the conditioned air (warm air) at a desired temperature passes through the defroster opening 23 and blows out toward the vehicle front window glass, thereby exhibiting the antifogging action of the vehicle front window glass. Here, the front-seat-side foot blowing air amount and the defroster blowing air amount are usually set to the same ratio.

  By the way, since the defroster door 26 is constituted by a butterfly door, when the defroster door 26 is operated to the fully open position of the defroster opening 23 (the broken line position in FIGS. 3 and 4), the second plate door portion 26c of the defroster door 26 is moved. Project to the bypass passage 19 side. Thereby, the cool air along the outer wall surface of the scroll casing 15b of the blower unit 15 can be guided to the main part of the warm air on the rear side of the vehicle in the front seat side first air mix region 28a.

  Thereby, since the air mix property in the front seat side 1st air mix area 28a can be improved further at the time of foot defroster mode, the foot blowing temperature on the front seat side and the defroster blowing temperature can be made equivalent. Therefore, it is possible to prevent the so-called cool diff, in which the defroster blowing temperature is lower than the foot blowing temperature.

  The occurrence of this cool differential causes a decrease in the antifogging performance of the front window glass of the vehicle, but according to the present embodiment, the antifogging performance of the front window glass of the vehicle is ensured and the heating effect on the front seat side of the vehicle interior is good. Can demonstrate.

  Since the foot defroster mode is set as the front seat side blowing mode during heating, the foot mode may be set on the rear seat side.

  Further, in the foot mode and the foot defroster mode, the front seat side center face opening 22a is fully closed, so that the cold air in the bypass passage 19 in the central region 14b and the front seat side first air mix region 28a on both the left and right sides. Branches to the seat side air mix area 29.

(5) Defroster mode The front seat face door 25 is operated to the position indicated by the broken line in FIGS. 3 and 4 to fully close the front seat center face opening 22a and the front seat side face opening 22b. The foot door 24 is also operated to a position where it overlaps with the front seat side foot opening 21 to fully close the front seat side foot opening 21. Further, the defroster door 26 is operated to the position of the broken line in FIGS. 3 and 4 to fully open the defroster opening 23.

  Thereby, the blowout air on the front seat side passes through the defroster opening 23 and is blown out only to the vehicle front window glass side, thereby exhibiting the antifogging action of the vehicle front window glass.

  Note that the defroster mode is set to exhibit the antifogging performance of the front window glass of the vehicle, and it is necessary to perform the antifogging of the window glass as quickly as possible in order to ensure the vehicle front view. Therefore, in conjunction with this when setting the defroster mode, the rear seat side blowing mode door is operated to the shut position in which both the rear seat side face opening 33 and the rear seat side foot opening 34 are fully closed, It is preferable to blow out the entire amount of blown air from the blower unit 15 to the window glass side.

(Second Embodiment)
FIG. 7 shows a second embodiment and corresponds to FIG. The second embodiment exhibits a left and right independent temperature control function. For this reason, a central partition plate 35 is disposed in the center of the vehicle 16 in the left-right direction in the passage downstream of the evaporator 16 inside the air conditioning case 14, and the front seat side outlet opening 21 from the downstream side of the evaporator 16 in the air conditioning case 14. , 22a, 22b, 23 and the rear seat side outlet openings 33, 34 are partitioned into a vehicle left side passage 36 and a vehicle right side passage 37.

  Accordingly, the left air mix door disposed in the left side passage 36 of the first embodiment and operated independently, and the right air mix door disposed in the right side passage 37 of vehicle and independently operated. It is divided into. In addition, in FIG. 7, illustration of the independent arrangement | positioning state of this right and left air mix door is abbreviate | omitted.

  As a result, the left and right air mix doors are configured so that the air temperature blown out from the vehicle left side passage 36 to the front seat left side and the rear seat left side in the vehicle interior and the air temperature blown out from the vehicle right side passage 37 to the front seat right side and the rear seat right side in the vehicle interior. Can be controlled independently.

  It should be noted that the left and right outlet modes in which the front seat outlet mode doors 24, 25 and 26 and the rear seat outlet mode door (not shown) are independently operated in the vehicle left passage 36 and the vehicle right passage 37, respectively. If it is divided into doors, the blowing mode on the front seat side and the rear seat side can be switched independently between the vehicle left side passage 36 and the vehicle right side passage 37.

  Furthermore, in addition to dividing the air mix door on the front seat side into left and right air mix doors that can be operated independently, an air mix door that can independently control the air temperature to the left and right in the rear seat side of the vehicle interior can be installed. For example, the air temperature to the left and right of the front seat side and the air temperature to the left and right of the rear seat side can be controlled independently. Thereby, the independent temperature control function of the four seats in the passenger compartment can be exhibited.

(Third embodiment)
8 and 9 show a third embodiment, and FIG. 8 corresponds to FIG. The third embodiment relates to a divided configuration of the air conditioning case 14.

  Specifically, the rear side divided case body 14e divided by the dividing line B of FIG. 8 is formed as a separate case in the air conditioning case 14, and the rear side divided case body 14e is formed on the front side of the air conditioning case 14. The case main body 14f is integrally fastened by fastening means such as screws and spring clicks. The front case body 14f is composed of a left divided case body and a right divided case body.

  Then, two partition plates 27 are integrally formed in the rear side divided case body 14e. For this reason, the specific division range of the rear side division case body 14e is set to correspond to the installation range of the partition plate 27 shown by the hatched area in FIG.

  According to the third embodiment, the air-conditioning case 14 is provided with the rear-side split case body 14e corresponding to the installation range of the partition plate 27 as a separate body. Air conditioning function variations can be easily realized.

  For example, when switching to the left and right independent temperature control method as in the second embodiment, the rear divided case body 14e is replaced with one having the two partition plates 27 and the central partition plate 35 of the second embodiment. Thus, the air-conditioning unit 10 can be easily switched to the left and right independent temperature control system while the front case body 14f is commonly used.

  Similarly, switching to the independent temperature control system for four seats in the passenger compartment can be easily realized by changing the rear divided case body 14e.

  In addition, switching to the front-seat-side air conditioning unit 10 that does not have the rear-seat-side outlet openings 33 and 34 can be easily realized by changing the rear-side divided case body 14e.

(Other embodiments)
In the above-described embodiment, the front seat side center face opening 22a and the front seat side side face opening 22b are simultaneously opened and closed by the face door 25, and the front seat side center face opening 22a and the front seat side face face are configured. The example in which the opening 22b is opened in the face mode and the bi-level mode and the front seat side center face opening 22a and the front seat side face face opening 22b are closed in the other blowing modes has been described. Only the face opening portion 22a may be opened in the face mode and the bi-level mode, and the front seat side face face opening portion 22b may be normally opened so as to open in the full blowing mode.

  Further, in the above-described embodiment, the blower fans 15a are arranged on both the left and right sides (both axial sides) of the motor of the blower unit 15, and the inside and outside air is switched to the suction ports of the scroll casing 15b of the blower fans 15a on the left and right sides. Although a box (not shown) is connected, the blower fan 15a and the inside / outside air switching box may be connected only to one axial side of the motor of the blower unit 15.

  Further, in the above-described embodiment, the blower unit 15 is arranged at a central portion in the left-right direction of the vehicle in the same manner as the heat exchanger unit (evaporator 16 and heater core 18). Even if the present invention is applied to a configuration of a so-called offset layout in which 15 is disposed on the lateral side of the vehicle (side of the passenger seat) with respect to the heat exchanger section (evaporator 16 and heater core 18). Good.

  Moreover, in the above-mentioned embodiment, although the air mix door 20 is comprised with the film door, you may comprise the air mix door 20 with plate doors other than a film door. At this time, the air mix door 20 may be configured by a combination of a cold air door that opens and closes the bypass passage 19 side and a hot air door that opens and closes the ventilation path on the heater core 18 side. And if this cold air door and a warm air door are each comprised by the some butterfly door, even if it comprises the air mix door 20 by a plate door, a door installation space can be made small.

  Further, the operation mechanism of the air mix door 20, the operation mechanism of the front seat side blowing mode doors 24, 25, and 26 and the operation mechanism of the rear seat side blowing mode door are not an automatic operation mechanism using a servo motor but a manual operation of an occupant. You may comprise with the manual operation mechanism by force.

It is a schematic perspective view of the indoor air-conditioning unit part which shows 1st Embodiment of this invention. It is A arrow sectional drawing of FIG. It is a center section sectional view of the vehicle left-right direction of the room air-conditioning unit part by a 1st embodiment. It is sectional drawing of the right-and-left both sides area | region of the vehicle left-right direction of the indoor air conditioning unit part by 1st Embodiment. (A) is a front view of the face door by 1st Embodiment, (b) is a front view of the defroster door by 1st Embodiment, (c) is a side view of this defroster door. It is sectional drawing which shows the installation range of the partition plate by 1st Embodiment by the oblique line range. It is sectional drawing which shows the partition structure in the indoor air-conditioning unit part by 2nd Embodiment, and respond | corresponds to FIG. It is a schematic perspective view of the indoor air-conditioning unit part which shows 3rd Embodiment, and respond | corresponds to FIG. It is sectional drawing of a prior art.

Explanation of symbols

14 ... Air conditioning case, 14b ... Central region, 14c, 14d ... Left and right side regions,
16 ... Evaporator (cooling heat exchanger), 18 ... Heater core (heating heat exchanger),
19 ... Bypass passage, 20 ... Air mix door (door means), 27 ... Partition plate,
21 ... Foot opening, 22a ... Center face opening, 22b ... Side face opening, 23 ... Defroster opening, 28a ... Front seat side air mix area,
29 ... rear seat side air mix region, 30 ... warm air passage, 33 ... rear seat side face opening,
34: Rear seat side foot opening.

Claims (6)

An air conditioning case (14) constituting a passage of air flowing toward the passenger compartment;
A cooling heat exchanger (16) disposed in the air conditioning case (14) for cooling the air;
A heating heat exchanger (18) for heating the air, which is disposed in the air conditioning case (14) on the downstream side of the air flow of the cooling heat exchanger (16);
A bypass passage (19) formed in the air conditioning case (14), and the cold air after passing through the cooling heat exchanger (16) flows bypassing the heating heat exchanger (18);
Air that is disposed in the air conditioning case (14) and that adjusts the air volume ratio between the hot air passing through the heating heat exchanger (18) and the cold air passing through the bypass passage (19), and is blown into the vehicle interior Door means (20) for adjusting the temperature;
A blow-off opening that blows out the air whose temperature is adjusted by the door means (20) into the vehicle interior;
As the blowout opening, a center face opening (22a) for taking out the air blown out to the face side of the front seat occupant in the center of the vehicle interior,
Side face opening (22b) for taking out the air blown out to the face side of the front seat occupant at the left and right sides of the passenger compartment,
A foot opening (21) for taking out the air blown out to the feet of the front seat passenger in the passenger compartment,
A defroster opening (23) for taking out the air blown out to the window glass side in the vehicle interior;
And a vehicle air conditioner having a rear-seat-side outlet opening (33, 34) for taking out the air blown out to the rear-seat occupant side of the vehicle interior,
Within the air conditioning case (14), the air flow downstream region of the heating heat exchanger (18) and the region of the bypass passage (19) are centered in the vehicle left-right direction by two partition plates (27). Partition into a region (14b), a left region (14c) and a right region (14d);
In the central region (14b), the hot air from the heating heat exchanger (18) and the cold air from the bypass passage (19) are mixed in the downstream portion of the air flow of the heating heat exchanger (18). Forming a rear seat side air mix region (29) to communicate with the rear seat side air mix region (29) to the rear seat side outlet opening (33, 34),
On the other hand, in the left and right side regions (14c, 14d), the warm air from the heating heat exchanger (18) flows through the downstream portion of the air flow of the heating heat exchanger (18) to the bypass passage (19). Formed as a warm air passage (30) flowing toward
Of the left and right side regions (14c, 14d), a portion where the warm air from the warm air passage (30) collides with the cold air of the bypass passage (19) is formed as a front seat air mix region (28a). ,
The center face opening (22a) is arranged so as to communicate linearly with the downstream portion of the air flow of the cooling heat exchanger (16) through the central region (14b) of the bypass passage (19). And
The central region (14b) of the bypass passage (19) communicates with the hot air passage (30),
Further, the side face opening (22b), the foot opening (21), and the defroster opening (23) are arranged so as to communicate with the front seat side air mix region (28a). A vehicle air conditioner. A face door (25) for opening and closing the center face opening (22a) and the side face opening (22b);
The face door (25) has a first plate door portion (25b) for opening and closing the center face opening (22a) and a second plate door portion (25c) for opening and closing the side face opening (22b). Consists of rotatable board doors
The first plate door portion (25b) protrudes in the upstream direction of the cold air flow from the bypass passage (19) at the operation position where the center face opening portion (22a) is opened, and from the bypass passage (19). The vehicle air conditioner according to claim 1, wherein the cold air flow is branched into a flow toward the center face opening (22a) and a flow toward the rear seat air mix region (29). A defroster door (26) for opening and closing the defroster opening (23);
The defroster door (26) has a first plate door portion (26b) and a second plate door portion (26c) integrally connected to both sides in the radial direction of the rotation shaft (26a), and the rotation shaft (26a) is connected to the defroster door (26a). The first and second plate door portions (26b, 26c) as a center are constituted by rotatable butterfly doors,
The defroster opening (23) is opened and closed by the first plate door (26b), and when the first plate door (26b) is operated to the opening position of the defroster opening (23), The second plate door part (26c) protrudes into the cold air flow of the bypass passage (19) to guide the cold air of the bypass passage (19) in the direction of the hot air from the hot air passage (30). The vehicle air conditioner according to claim 1 or 2. 4. The air conditioning case according to claim 1, wherein a portion corresponding to an installation range of the partition plate is constituted by a separate divided case body. The vehicle air conditioner described in 1. The vehicle air conditioner according to claim 4, wherein the partition plate (27) is integrally formed with the split case body (14e). Inside the air conditioning case (14), a central partition plate (35) that partitions the downstream side of the air flow of the cooling heat exchanger (16) into a vehicle left side passage (36) and a vehicle right side passage (37),
The said door means (20) is comprised by the vehicle left side door means and vehicle right side door means which can be independently operated by the said vehicle left side channel | path (36) and the said vehicle right side channel | path (37), respectively. The vehicle air conditioner according to any one of 1 to 5.

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