JP2010018248A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle attaining reduction of resistance given to air flowing in a first ventilation passage by a guide ventilation passage crossing the first ventilation passage in an air-conditioning case. <P>SOLUTION: A face blowing port 12 of a plurality of blowing ports formed on the air-conditioning case 1 is partitioned by a first partition part 20 and a second partition part 21 to be divided to a center opening part 12a and a side opening part 12b, i.e., a plurality of opening parts. A warm air guide passage 9 is arranged at an upstream side of the face blowing port 12 such that projection portions 30, 31 where the first partition part 20 and the second partition part 21 are projected in an upstream direction of an air flow passing through an evaporator 3 and directed to the face blowing port 12 are projected on at least one part of the first warm air guide passage 9a and the second warm air guide passage 9b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle air conditioner that guides conditioned air to a predetermined outlet according to an operation mode.

  In order to easily increase the temperature of the conditioned air blown from the defroster outlet, a conventional vehicle air conditioner is provided with a warm air guide passage that guides the heated warm air to the defroster air passage. (For example, refer to Patent Document 1). The hot air guide passage is disposed so as to cross the cold air passage.

Similarly to Patent Document 1, Patent Document 2 is proposed as a device having a hot air guide passage. The hot air guide passage disclosed in Patent Document 2 is configured by a single tunnel-shaped passage (see FIG. 2 of Patent Document 2).
JP-A-10-236134 US Patent Application Publication No. 2003/0139132

  The conventional vehicle air conditioner is desired to be downsized because the installation space of the air conditioning case is limited. Since a plurality of ventilation paths are provided in the air conditioning case, the plurality of ventilation paths are arranged in a positional relationship such that they intersect each other. For this reason, it is desired also from a viewpoint of air-conditioning performance ensuring that a warm air guide path does not become the flow resistance of the air which flows through another ventilation path as much as possible.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to reduce the resistance of the hot air guide passage that crosses the cold air passage in the air conditioning case to the air flowing through the cold air passage. Is to provide.

  In order to achieve the above object, the following technical means are adopted. That is, according to the first aspect of the vehicle air conditioner, the air conditioning case (1) in which a passage through which the conditioned air flowing toward the vehicle interior flows is formed, and the conditioned air is blown toward a predetermined part in the vehicle interior. A plurality of outlets (10, 12, 15) formed in the air-conditioning case, and an evaporator (3) provided in the air-conditioning case for cooling when air passes and supplying cold air downstream And a cold air passage (5) provided in the air conditioning case and through which the cold air flows, a hot air passage (8) provided in the air conditioning case and through which the hot air flows, and an amount of air flowing through each of the cold air passage and the hot air passage. An air mix door (6) that adjusts the ratio and a hot air that is provided so as to cross the cold air passage and guides the hot air flowing through the hot air passage to the first air outlet (10) of the plurality of air outlets And a guide passage (9).

  The second air outlet (12) of the plurality of air outlets is partitioned by the partition portions (20, 21) and further divided into a plurality of openings (12a, 12b). The projection part (30, 31, 32) which projected the partition part in the upstream direction of the air flow which passes an evaporator and goes to a 2nd blower outlet (12) is projected on at least one part of a warm air guide path. As described above, the second air outlet is arranged upstream of the second air outlet.

  According to the present invention, it is possible to secure the amount of hot air that is guided to the first air outlet by the hot air guide passage arranged as described above. Furthermore, a projected portion obtained by projecting the partition portion in the upstream direction of the air flow passing through the evaporator is projected on at least a part of the hot air guide passage, so that the partition portion is in the air flow direction with respect to the hot air guide passage. Are arranged to overlap. Thus, after passing through the evaporator, the cool air flowing around the hot air guide passage can smoothly flow toward the plurality of openings without being blocked. Therefore, it is possible to reduce the resistance given to the air flowing through the cold air passage by the hot air guide passage that crosses the cold air passage in the air conditioning case. For this reason, the air conditioner for vehicles which realizes securing of the quantity of warm air which leads to the 1st blower outlet, and improvement of the circulation nature of the cold wind to the 2nd blower outlet is obtained.

  Moreover, the center line (24a, 24b) which crosses the center axis line (25a, 25b) of a partition part and the center of a warm air guide path (9a, 9b) along the said air flow direction which goes to a 2nd blower outlet (12). ) Are preferably substantially the same.

  According to this invention, since the partition portion and the hot air guide passage are disposed substantially coaxially along the air flow direction, the cold air flowing outside the hot air guide passage is Further, the flow is smoothly flowed through the plurality of openings without being bent by the partition at the downstream side. Thereby, the resistance which the warm air guide passage gives to the air flowing through the cold air passage can be further reduced.

  The hot air guide passages (9a, 9b, 9c) are composed of a plurality of hot air guide passages arranged at intervals on the upstream side so as to correspond to the respective partition portions, and the adjacent hot air guide passages are adjacent to each other. The passages (51, 52) formed therebetween are preferably provided so as to go straight to the openings (12a, 12b) formed between the corresponding partition portions.

  According to the present invention, the hot air guide passages are provided so as to correspond to the respective partition portions on the downstream side, so that the air that has passed through the evaporator is not greatly bent by the hot air guide passages, and the warm air guide passages are not bent. The air flows smoothly toward the openings through the passages between the wind guide passages. Thereby, the resistance which the warm air guide passage gives to the air flowing through the cold air passage can be further reduced.

  Moreover, it is preferable that a 1st blower outlet is a defroster blower outlet (10), and a 2nd blower outlet is a face blower outlet (12). According to the present invention, the temperature of the conditioned air blown from the defroster outlet can be increased, the resistance of the hot air guide passage to the cold air passage can be suppressed, and the flowability of the cold air to the face outlet can be improved. In the face mode, it is possible to prevent the face blowing air volume from being lowered. Therefore, the comfort in both sides of air conditioning can be ensured.

  In addition, the code | symbol in the bracket | parenthesis of each said means is an example which shows a corresponding relationship with the specific means of embodiment mentioned later.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not specified unless there is a problem with the combination. Is also possible.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view showing an internal configuration of an air conditioning case according to the vehicle air conditioner of the present embodiment. FIG. 2 is a partial cross-sectional view showing a state when the II-II cut surface in FIG. In FIG. 1, the upper side of the page indicates the upper side of the vehicle, the lower side indicates the lower side of the vehicle, the left direction indicates the front side of the vehicle, and the right direction indicates the rear side of the vehicle. In FIG. 2, the upper side of the page indicates the X1 direction, the lower side indicates the X2 direction, the left-right direction indicates the vehicle left-right direction, and the front side of the page indicates the Y direction. In FIG. 2, the air mix door 6 is omitted for easy understanding.

  The air conditioning unit that constitutes the vehicle air conditioner of the present embodiment has an outer shell formed of an air conditioning case 1 and roughly includes a blower unit and an air conditioning unit. The air conditioning case 1 is disposed on the back side of the instrument panel in the front of the passenger compartment. The air conditioning case 1 includes a plurality of case members, and is a resin molded product such as polypropylene, for example. The plurality of case members are integrally coupled by fastening means such as metal springs and screws to constitute the air conditioning case 1.

  The blower section includes a blower (not shown) for blowing air inside or outside the vehicle compartment to the air conditioning section, and the blower outlet of the blower is connected to the blower passage 2 leading to the inlet of the air conditioning section. The blower includes a centrifugal multiblade fan and a motor for driving the fan. The periphery of the centrifugal multiblade fan is surrounded by a scroll casing, and communicates with the blower passage by a duct extending in the centrifugal direction of the centrifugal multiblade fan.

  The air-conditioning unit includes an evaporator 3 that is provided so as to cover the entire air passage 2, a heater core 7 that heats air that has passed through the evaporator 3, a cold air passage 5, an air mix door 6, and a hot air passage 8. The warm air guide passage 9, the defroster door 16, the face door 17, and the foot door 18 are provided inside the air conditioning case 1. Further, the air conditioning case 1 is formed with a plurality of air outlets on the downstream side of the cold air passage 5 and the hot air passage 8. Here, the defroster air outlet 10, which is an example of the first air outlet, A face air outlet 12 that is an example of the air outlet and a foot air outlet 15 that is an example of the third air outlet are provided.

  The defroster outlet 10 is located, for example, in the upper part of the air conditioning case 1 on the front side of the vehicle, and blows conditioned air along the side of the vehicle interior such as the front window glass to reduce the degree of fogging of the front window glass. It is an opening. The cross-sectional area of the defroster passage 11 formed by the opening is controlled by the defroster door 16. The face air outlet 12 is, for example, an opening that is located on the vehicle rear side of the defroster air outlet 10 at the top of the air conditioning case 1 and that blows air conditioned air toward the upper body of the occupant, and is mainly used during cooling. . The cross-sectional area of the face passage 13 formed by the opening is controlled by the face door 17. The foot outlet 15 is, for example, an opening for blowing the conditioned air to the feet of the occupant located below the defroster outlet 10 and the face outlet 12 on the vehicle rear side of the air conditioning case 1. Sometimes used. The cross-sectional area of the foot passage 14 leading to the opening is controlled by the foot door 18.

  The air outlets are symmetrical about the passage partition wall 23 that bisects the interior of the air conditioning case 1 in the left-right direction of the vehicle, so that the conditioned air can be supplied to both the left and right sides of the driver seat and the passenger seat of the vehicle. Is arranged. In addition, the conditioned air blown from each outlet is supplied to a predetermined part in the vehicle compartment through a connected duct (not shown). Each of the defroster door 16, the face door 17, and the foot door 18 is a one-side pivot-type plate-like door having a rotating shaft and a flat door body extending on the other side of the rotating shaft. The operations of the blower, the air mix door 6, the defroster door 16, the face door 17, and the foot door 18 are controlled by a control device (not shown).

  The evaporator 3 is, for example, a cooling heat exchanger that is positioned on the vehicle front side of the air-conditioning case 1 and that evaporates low-temperature and low-pressure refrigerant decompressed by an expansion valve in the refrigeration cycle by receiving air from the blower. And the blowing air which passes the circumference | surroundings of the tube through which a refrigerant | coolant flows is cooled, and cold wind is supplied to the downstream cold wind channel | path 5. FIG.

  The heater core 7 is a heat exchanger for heating that is located at a lower part on the vehicle rear side than the heater core 7, heat-exchanges with blown air using high-temperature cooling water of the traveling engine as a heat source, and heats the air flowing around the heater core 7. It arrange | positions so that the channel | path downstream of the air flow direction from the evaporator 3 may be partially plugged up.

  The air mix door 6 is a door which is located on the vehicle rear side of the evaporator 3 and can open and close the cold air passage 5 and the hot air passage 8 which are downstream passages through which the air passing through the evaporator 3 flows down. This is a sliding door that is slid by the driving means and moves to the cold air passage 5 side and the hot air passage 8 side. The air mix door 6 includes a door main body, a rack 6a (door slide gear) provided at an end of the door main body, a pinion 6b (shaft gear) rotated by driving means, a door guide pin, and the like. The rack 6a is formed so as to extend in the entire moving direction of the door body, and is configured to mesh with a pinion 6b provided on the shaft. The pinion 6b is further rotated together with the gear by a rotational driving force of a servo motor or the like transmitted to a gear provided outward in the axial direction, and this rotational driving force is a force that moves the rack 6a in a direction orthogonal to the axial direction of the shaft. As a result, the door body moves.

  The air mix door 6 adjusts the ratio of the amount of warm air that passes through the heater core 7 and the amount of cool air that does not pass through the heater core 7 according to its slide position. When the air mix door 6 is located at one end side (warm air passage 8 side) shown in FIG. 1, it is during maximum cooling, and the air flow to the heater core 7 is completely blocked by closing the hot air passage 8. Air conditioning is provided in the passenger compartment. Conversely, when the air mix door 6 is located at the other end side (cold air passage 5 side), it is during maximum heating, and all the air that has passed through the evaporator 3 with the cold air passage 5 closed is flowed to the heater core 7 to be heated. Provide heating air in the passenger compartment.

  When the air mix door 6 is in the middle position, both the cold air passage 5 and the hot air passage 8 are partially opened so that both the cold air and the hot air flow down, and upstream of each outlet. It mixes in the air mix chamber provided in the side, passes through the blower opening opened after the temperature is adjusted, and is sent into the passenger compartment. The air mix door 6 adjusts the air volume ratio of the cold air and the hot air according to the slide position, and adjusts the temperature of the conditioned air. The slide position of the air mix door 6 is determined by the control device together with the blowing mode by the doors 16, 17, 18 according to the set temperature of the auto air conditioner, and according to the set temperature and blowing mode in the case of a manual air conditioner. And determined by the control device. The air mix chamber is a space where the cold air flowing from the evaporator 3 and the hot air heated by the heater core 7 are mixed. The conditioned air whose temperature is adjusted in this space can be supplied to the passenger compartment at an appropriate air volume ratio by controlling the doors 16, 17 and 18.

  A warm air passage 8 is provided on the downstream side of the heater core 7. The warm air passage 8 is inclined to the front side of the vehicle and is formed to extend upward from the lower portion of the air conditioning case 1. The warm air passage 8 has a width dimension across the entire vehicle left-right direction of the air conditioning case 1, and the width dimension is larger than the dimension in the vehicle front-rear direction. That is, the warm air passage 8 is a flat passage that is thin in the front-rear direction, horizontally long, and long in the up-down direction. The hot air passage 8 is connected to the hot air guide passage 9 in the vicinity of the upper end portion of the heater core 7, and the hot air guide passage 9 further extends so as to stand up toward the upper first air outlet.

  The hot air guide passage 9 is a passage formed inside a cylindrical body that crosses the cold air passage 5, and the hot air that has flowed through the hot air passage 8 to the first air outlet among the plurality of air outlets. It is a passage that leads. Thereby, the amount of warm air that is guided to the first outlet by the warm air guide passage 9 can be efficiently secured. The cross-sectional shape of the hot air guide passage 9 is a circular shape that is rounded at least on the upstream side. For example, a streamline shape that suppresses the passage resistance of the cold air (elongated, rounded at the tip and rounded at the rear end) ).

  Here, the defroster blower outlet 10 is employ | adopted as an example of a 1st blower outlet. The downstream end of the hot air guide passage 9 faces the first air outlet (for example, the defroster air outlet 10) so that the hot air can easily flow out from the first air outlet. Since the downstream end of the hot air guide passage 9 is arranged at a predetermined interval from the first air outlet, when the first air outlet is closed, the other open air outlet is opened. It begins to flow toward the exit. And it is temperature-controlled by mixing with the cold wind which has flowed through the cold wind path 5 on the way to another blower outlet.

  The cold air passage 5 and the second air outlet (for example, the face air outlet 12) are arranged so as to include a virtual line 24 that is substantially orthogonal to the passage surface portion 3a through which the air of the evaporator 3 passes (see FIG. 1). . The cold air passage 5 extends in the X1 direction in FIG. 1 so as to follow the virtual line 24 toward the second air outlet. The hot air guide passage 9 extends in the Y direction in FIG. 1 toward the first air outlet (for example, the defroster air outlet 10) so as to intersect the virtual line 24 between the evaporator 3 and the second air outlet. ing.

  Among the plurality of air outlets, at least the second air outlet is composed of a plurality of openings arranged in the vehicle left-right direction. Here, the face air outlet 12 is adopted as an example of the second air outlet. The face air outlet 12 is provided with a plurality of openings by being partitioned by a plurality of partitions. Specifically, as shown in FIG. 2, the plurality of openings are a center opening 12 a and a side opening 12 b that are arranged symmetrically in the air conditioning case 1.

  The center opening 12a is a two-part opening formed symmetrically in the left-right direction central portion of the air conditioning case 1 in total, and is partitioned and formed by the first partition 20 and the second partition 21. . The center opening 12a is connected to, for example, an air outlet disposed in front of the center of the vehicle interior, and the conditioned air blown from the air outlet is mainly provided to passengers in the driver seat and the passenger seat. The side openings 12b are two openings that are formed one by one in the left-right direction at both ends in the left-right direction of the air conditioning case 1 in total, and are partitioned and formed by the second partition portion 21 and the third partition portion 22. . The side openings 12b are connected to, for example, air outlets disposed at both front ends of the vehicle interior, and the conditioned air blown out from the air outlets is mainly along the inner surfaces of the doors on the driver side and the passenger side. Will begin to flow.

  The 1st partition part 20, the 2nd partition part 21, and the 3rd partition part 22 are comprised by the wall part bridged in the short width direction which divides the horizontally long face blower outlet 12 into several opening part in a width direction. . The 1st partition part 20 is provided so that the center part of the face blower outlet 12 may be longitudinally cut. The 2nd partition part 21 is provided so that it may cut longitudinally in the position of the both sides which provided the space | interval for the horizontal width of the center opening part 12a from the 1st partition part 20. FIG. The 3rd partition part 22 is provided in the position which provided the space | interval for the lateral width of the side opening part 12b from the 2nd partition part 21, and is provided so that the both ends of the face blower outlet 12 may be cut | disconnected longitudinally.

  The warm air guide passage 9 has a projection part which projects the partition part in the upstream direction (X2 direction in FIGS. 1 and 2) of the air flow passing through the evaporator 3 and going to the second air outlet (face air outlet 12). It arrange | positions in the upstream of a 2nd blower outlet so that it may project on at least one part of the warm air guide channel | path 9. FIG. In other words, the partition portion is disposed so as to overlap the hot air guide passage 9 in a direction (X1 direction, X2 direction) substantially orthogonal to the passage surface portion 3a through which the air of the evaporator 3 passes.

  Further, according to the example shown in FIG. 2, the hot air guide passage 9 is composed of a plurality of passages arranged in the left-right direction of the vehicle, of which the first hot air guide passage 9a is a part of the first hot air guide passage 9a. The projection part 30 which projected the 1 partition part 20 to X2 direction is arrange | positioned so that it may project. Similarly, the second hot air guide passage 9b is arranged so that a projection portion 31 obtained by projecting the second partition portion 21 in the X2 direction is projected on a part of the second hot air guide passage 9b. Is arranged so that a projection portion 32 obtained by projecting the third partition portion 22 in the X2 direction is projected onto a part of the projection. Due to the configuration of each of the hot air guide passages 9a, 9b, and 9c and the partition portions 20, 21, and 22, the cold air flowing between the adjacent hot air guide passages collides with the partition portion on the downstream side. Without passing through each opening smoothly without changing the flow direction.

  Further, the central axes 25a and 25b of the respective partition portions and the hot air guide passages 9a and 9b along the air flow direction (X1 direction) passing through the evaporator 3 toward the second air outlet (face air outlet 12). The center lines 24a and 24b that cross the center of the two substantially coincide with each other. In other words, the partition portions 20 and 21 and the hot air guide passages 9a and 9b are arranged so that the axes in the directions (X1 direction and X2 direction) substantially perpendicular to the passage surface portion 3a through which the air of the evaporator 3 passes are aligned. Are aligned in the substantially orthogonal direction.

  Since the partition portions 20 and 21 and the hot air guide passages 9a and 9b are arranged in such a relationship, the cold air flowing down the cold air passages 51 and 52 formed between the hot air guide passages is Further, the flow does not bend by the respective partition portions 20 and 21 on the downstream side, and flows smoothly and flows out from the center opening portion 12a and the side opening portion 12b. That is, the partition portions 20 and 21 and the hot air guide passages 9a and 9b can form a flow path that does not become a resistance, and a decrease in the amount of cold air can be suppressed.

  Further, the hot air guide passages 9a, 9b, 9c are arranged side by side at a predetermined interval on the upstream side so as to correspond to the partition portions 20, 21, 22. Further, the cold air passages 51 and 52 formed between the adjacent hot air guide passages are formed so as to extend straight toward the openings 12a and 12b formed between the corresponding partition portions. Yes. In other words, each of the cold air passages 51 and 52 is provided so as to extend straight toward the center opening 12a and the side opening 12b, and the obstacle affecting the flow direction until reaching the opening. There is no thing. Each partition part 20,21,22 is arrange | positioned so that it may not exist in the area | region which extended each cold-air channel | path 51,52 toward the opening part, and it does not become an obstruction with respect to the flow of cold air. Yes.

  By arranging the partitions 20 and 21 in this way, the air that has passed through the evaporator 3 is not greatly bent by the hot air guide passages 9a, 9b, and 9c, and is not bent between the hot air guide passages. It flows toward the center opening 12a and the side opening 12b through the cold air passages 51 and 52. For this reason, the resistance which the warm air guide passage 9 gives to the air flowing through the cold air passage 5 can be further reduced, and the air conditioning performance can be improved.

  In addition, the third hot air guide passage 9c is provided in an end portion in the left-right direction of the vehicle in the air-conditioning case 1 where the air flow velocity is slower than the central portion in the vehicle direction. Difficult to resist incoming air flow. That is, by providing the hot air guide passage in a portion where the resistance of the cold air passage 5 is unlikely to be resistance, further ensuring the amount of air flowing through the cold air passage 5 and the performance of introducing the hot air into the first air outlet (defroster air outlet 10). And both.

  The operation of each door 16, 17, 18 and the flow of conditioned air in each blowing mode (face mode, bi-level mode, foot mode, foot differential mode, defroster mode) in the above configuration will be described.

  In the face mode, the face passage 13 is fully opened by the face door 17, the defroster passage 11 is closed by the defroster door 16, and the foot passage 14 is closed by the foot door 18. As a result, the conditioned air temperature-controlled by the air mix door 6 flows only through the face passage 13 and is smoothly disturbed by the center opening without being disturbed by the partitions 20 to 22 and the hot air guide passage 9. It flows out of 12a and the side opening part 12b, and it blows toward the vehicle interior.

  The bi-level mode is a mode in which warm air is blown to the occupant's feet in an intermediate period such as spring and autumn, and cold air is blown to the occupant's upper body, thereby providing the head with cold air heat. In the bi-level mode, the face door 17 and the foot door 18 are controlled so that both the face passage 13 and the foot passage 14 are opened. Further, the defroster passage 11 is closed by the defroster door 16. As a result, the conditioned air temperature-controlled by the air mix door 6 is blown to the face passage 13 and the foot passage 14 approximately by half, and cold air circulates in the face passage 13, and the foot passage 14 Hot air circulates and conditioned air with a difference in temperature between the upper and lower sides is provided in the passenger compartment. Also in this case, the cool air flowing through the face passage 13 flows smoothly from the center opening 12a and the side opening 12b without being disturbed by the partitions 20 to 22 and the hot air guide passage 9, Air is blown toward the passenger compartment.

  In the foot mode, the foot passage 14 is fully opened by the foot door 18, the face passage 13 is closed by the face door 17, and the defroster passage 11 is closed by the defroster door 16. Thereby, the conditioned air temperature-controlled by the air mix door 6 flows from the hot air passage 8 through the hot air guide passage 9 into the foot passage 14 and is blown toward the feet of the passenger.

  In the foot differential mode, the face passage 13 is closed by the face door 17, the foot passage 14 is fully opened by the foot door 18, and the defroster passage 11 is opened by the defroster door 16. As a result, the conditioned air temperature-controlled by the air mix door 6 is sent to both the defroster passage 11 and the foot passage 14 to prevent the front window from being fogged and to the foot of the passenger. Provides a sense of warmth. In this foot differential mode, about half of the conditioned air temperature controlled by the air mix door 6 is blown to the foot passage 14, and the other half is blown to the defroster passage 11. Since the warm air is directed to the defroster outlet 10 by the warm air guide passage 9, the opening degree of the defroster passage 11 by the defroster door 16 is made to be narrower than the fully open state, thereby achieving an air volume balance.

  In the defroster mode, the defroster passage 11 is fully opened by the defroster door 16, the foot passage 14 is closed by the foot door 18, and the face passage 13 is closed by the face door 17. As a result, the conditioned air adjusted in temperature by the air mix door 6 is smoothly guided from the warm air passage 8 to the defroster passage 11 by the warm air guide passage 9, thereby providing prevention of fogging of the front window.

  The effect which the vehicle air conditioner of this embodiment brings is described below. In the vehicle air conditioner, the face air outlet 12 of the plurality of air outlets formed in the air conditioning case 1 is partitioned by the first partition portion 20 and the second partition portion 21 and further has a plurality of openings. It is divided into a center opening 12a and a side opening 12b. Further, the warm air guide passage 9 has projection portions 30 and 31 that project the first partition portion 20 and the second partition portion 21 in the upstream direction of the air flow passing through the evaporator 3 and going to the face air outlet 12. It arrange | positions in the upstream of the face blower outlet 12 so that it may project on at least one part of the wind guide path 9a and the 2nd warm air guide path 9b.

  According to this structure, each partition part 20 and 21 is arrange | positioned so that it may overlap with each warm air guide passage 9a, 9b in an air flow direction. Thus, after passing through the evaporator 3, the cool air flowing around each of the hot air guide passages 9a and 9b flows without being disturbed toward the center opening 12a and the side opening 12b without being bent. Therefore, it is possible to reduce the resistance that the hot air guide passage 9 that crosses the cold air passage 5 in the air conditioning case 1 gives to the air flowing through the cold air passage 5. For this reason, it is possible to secure the amount of warm air guided to the first air outlet by the hot air guide passage 9 and secure the amount of cold air to the second air outlet.

  Moreover, while the said 1st blower outlet is the defroster blower outlet 10, and the said 2nd blower outlet is the face blower outlet 12, while the temperature of the air-conditioning wind blown from the defroster blower outlet 10 can be raised, In order to suppress the resistance of the hot air guide passage 9 to the cold air passage and to improve the flowability of the cold air to the face air outlet 12, the face blowout in the face mode in spite of the provision of the hot air guide passage 9. A vehicle air conditioner that can prevent a decrease in the air volume can be provided.

(Second Embodiment)
Although the thing of various forms can be considered as the warm air guide passage 9 which concerns on this invention, this embodiment shows an example of the other form of the warm air guide passage 9. FIG. Other configurations except the baffle 90 related to the hot air guide passage 9A of the present embodiment are the same as those of the above-described embodiment and have the same functions and effects. FIG. 3 is a partial cross-sectional view in the air conditioning case showing the form of the hot air guide passage 9A according to the present embodiment. FIG. 4 is a partial perspective view of the baffle 90 showing the form of the hot air guide passage 9A.

  As shown in FIG. 3, in the passage on the upstream side of the face outlet 12, the arrow heading upward (X1 direction) in the drawing is the flow direction of the cold air in the cold air passage 5, and the direction (from the back side to the front side) (Y direction) is a flow direction of the warm air flowing through the warm air guide passage 9A. Even when the hot air guide passage 9A is formed by the baffle 90 connected to the hot air passage 8, the hot air guide passage and the cold air passage are alternately arranged in the left-right direction of the vehicle, and the hot air guide passages 9a and 9b are arranged. 9c and the partition portions 20, 21, and 22 have the same relationship as in the first embodiment, and have the same effects.

  As shown in FIG. 4, the baffle 90 includes a plurality of dividing plates 91 that divide the space into a plurality of spaces in the width direction of the cool / warm air flow, the evaporator 3 side (vehicle front side) in one space, and the warm air passage 8. The warm air shielding plate 92 that stands up toward the defroster air outlet 10 from the upper end of the air flow and prevents the hot air flow from flowing toward the evaporator 3, and the rear side of the vehicle in the space toward the face air outlet 12. And a cold wind directing plate 93 that directs the flow of the cold wind toward the face outlet 12. The baffle 90 is a member formed by continuously connecting the dividing plate 91, the hot air shielding plate 92, and the cold air directing plate 93 in this order, and each plate 91, 92, 93 is an upper end portion of the hot air passage 8. It extends toward the defroster outlet 10 and is disposed so as to cross the cold air passage 5.

(Other embodiments)
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, a plurality of the hot air guide passages 9 are arranged in the vehicle left-right direction of the air-conditioning case 1, but the present invention is not limited to this, and one hot air guide passage 9 is arranged in the vehicle left-right direction. It may be configured. The hot air guide passage 9 has a circular cross-sectional shape, but is not limited to this shape, and may be, for example, a track shape, an oval shape, or a rectangular shape.

  Moreover, in the said embodiment, although the 1st blower outlet is made into the defroster blower outlet 10, and the 2nd blower outlet is made into the face blower outlet 12, it is not limited to this combination. The first air outlet and the second air outlet may be set as other air outlets depending on the function of the air conditioner, the air conditioning target space, and the like.

It is sectional drawing which showed the internal structure of the air-conditioning case which concerns on the vehicle air conditioner of 1st Embodiment. It is a fragmentary sectional view which shows a state when the II-II cut surface in FIG. 1 is seen by the arrow. It is a fragmentary sectional view in the air-conditioning case which shows the form of the warm air guide passage which concerns on 2nd Embodiment. It is a fragmentary perspective view which shows the form of the warm air guide passage of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Air-conditioning case 3 ... Evaporator 5 ... Cold wind passage 6 ... Air mix door 8 ... Warm air passage 9 ... Warm air guide passage 9a ... 1st hot air guide passage (hot air guide passage)
9b ... Second hot air guide passage (hot air guide passage)
9c ... Third hot air guide passage (hot air guide passage)
10. Defroster outlet (multiple outlets, first outlet)
12 ... Face outlet (multiple outlets, second outlet)
12a ... Center opening (a plurality of openings)
12b ... side opening (a plurality of openings)
15 ... Foot outlet (multiple outlets)
20 ... 1st partition part (partition part)
21 ... 2nd partition part (partition part)
24 ... Virtual line 30, 31, 32 ... Projection part

Claims (4)

An air conditioning case (1) in which a passage through which conditioned air flows toward the passenger compartment is formed;
A plurality of air outlets (10, 12, 15) formed in the air conditioning case so that the conditioned air is blown toward a predetermined part in the vehicle interior;
An evaporator (3) provided in the air conditioning case, for cooling when air passes and supplying cold air downstream;
A cold air passage (5) provided in the air conditioning case and through which the cold air flows;
A hot air passage (8) provided in the air conditioning case and through which hot air flows;
An air mix door (6) for adjusting the ratio of the amount of air flowing through each of the cold air passage and the hot air passage;
A hot air guide passage (9) that is provided so as to cross the cold air passage and guides the hot air flowing through the hot air passage to a first air outlet (10) of the plurality of air outlets. ,
Of the plurality of outlets, the second outlet (12) is partitioned by a partition (20, 21) and further divided into a plurality of openings (12a, 12b).
The warm air guide passage has projection portions (30, 31, 32) that project the partition part in the upstream direction of the air flow passing through the evaporator and going to the second air outlet (12). An air conditioner for a vehicle, which is disposed upstream of the second air outlet so as to be projected onto at least a part of the passage.   A center line (24a, 25b) that intersects the center axis (25a, 25b) of the partition part and the center of the hot air guide passage (9a, 9b) along the air flow direction toward the second outlet (12). 24. The vehicle air conditioner according to claim 1, wherein 24b) substantially matches.   The hot air guide passages (9a, 9b, 9c) are composed of a plurality of hot air guide passages arranged at intervals on the upstream side so as to correspond to the respective partition portions, and the adjacent hot air guide passages. The respective passages (51, 52) formed therebetween are provided so as to go straight to the respective openings (12a, 12b) formed between the corresponding partition portions. The vehicle air conditioner according to claim 1 or 2.   The vehicle according to any one of claims 1 to 3, wherein the first air outlet is a defroster air outlet (10) and the second air outlet is a face air outlet (12). Air conditioner.

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