JP5822619B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner applied to a vehicle such as an automobile, and more particularly, to a vehicle air conditioner that performs air conditioning with an evaporator and a heater core.

  Conventionally, a vehicle air conditioner (HVAC: Heating, Ventilation, and Air-Conditioning) in which an evaporator, which is a heat exchanger for cooling, and a heater core, which is a heat exchanger for heating, are integrated has been widely used. (For example, see Patent Document 1)

  In such a vehicle air conditioner, the temperature of the conditioned air blown into the vehicle interior is adjusted by appropriately adjusting the mixing ratio of the cold air that has passed through the evaporator and the hot air that has passed through the heater core. The temperature of the conditioned air is adjusted by operating a damper angle (opening) adjusting mechanism generally called an air mix damper.

The operation of the air mix damper is such that the plate-like damper is rotated around the rotation axis by the angle adjusting mechanism. By such a rotation operation of the air mix damper, the effective air flow cross-sectional area (opening) is relatively relative to the cold air flow channel through which the cold air that has passed through the evaporator and the hot air flow channel through which the hot air that has passed through the heater core flow. Change (increase / decrease). The air mix damper operates so that the cool air volume ratio increases during the cooling operation (low temperature of the blown air) and operates so that the warm air volume ratio increases during the heating operation (when the blown air is hot).
In addition, by providing a reheat prevention damper that operates integrally with the above-described air mix damper, it is also possible to prevent or suppress the warm air that has passed through the heater core during the cooling operation from flowing into the cold air.

JP 2006-7840 A

By the way, since the conventional vehicle air conditioner generally secures the vehicle's living space with priority, the allowable installation space is often limited. For this reason, the vehicle air conditioner is required to be miniaturized as much as possible, and therefore it is difficult to ensure a sufficient mixing distance for adjusting the temperature by mixing cold air and hot air. As a result, a problem has been pointed out that the conditioned air supplied to each air outlet in the passenger compartment has a deviation in the air temperature.
This deviation occurs depending on the blowing position in the passenger compartment, and in particular, in the vehicle width direction in the passenger compartment, it often appears as a deviation between the center side between the driver's seat and the front passenger seat and the left and right side surfaces. There is also a tendency for the temperature difference to reverse between time and heating.

  When a temperature deviation occurs, it often gets cold at the center of the passenger compartment during cooling operation and warms at the center of the passenger compartment during heating operation. This is because cold air and hot air that collide / mix in a vehicle air conditioner are often rectangular cross-section jets with a large aspect ratio, and a flow with a large air flow (a flow with a large dynamic pressure) flows toward the center. This is thought to be due to the tendency. That is, since the cold air ratio is large during cooling operation, cold air with a large air volume gathers in the center of the passenger compartment, and conversely, during heating operation, the cold air ratio is small and the hot air ratio is large, Is presumed to gather in the center of the passenger compartment.

In patent document 1 mentioned above, the rib which divides | segments an axial direction into several is standingly arranged in the air mix damper, and this rib improves a mixing state by dividing | segmenting the confluence | merging part of cold air and warm air into several area | regions. doing.
However, in the configuration in which a simple flow guide member is installed as in the rib disclosed in Patent Document 1, even if the temperature difference during cooling operation (or heating operation) can be eliminated, the heating operation (or cooling) It is difficult to eliminate the temperature difference during operation.

From such a background, a vehicle capable of providing a comfortable vehicle interior environment by solving the problem of the conventional apparatus in which a large amount of cold air or hot air flows to the center side of the vehicle interior to cause a deviation in the blown air temperature. Air conditioning equipment is desired.
The present invention has been made in order to solve the above-described problems. The object of the present invention is to provide a vehicle interior blowout temperature at which air that has been introduced into an air flow path and air-conditioned is blown into the vehicle compartment. An object of the present invention is to provide a vehicle air conditioner that can suppress or eliminate a temperature deviation depending on a position.

In order to solve the above problems, the present invention employs the following means.
An air conditioner for a vehicle according to the present invention includes an evaporator and a heater core arranged in an air flow path in a casing, and a vehicle interior air temperature that air-conditions air introduced into the air flow path passes through the evaporator. A vehicle air conditioner in which a mixing ratio of cool air to be cooled and warm air to be heated by passing through the heater core is adjusted according to an opening degree of an air mix damper provided at a junction, the air mix damper A rib that guides the cool air to a through passage formed at the center in the vehicle width direction at the time of heating operation is erected at the end in the vehicle width direction at the front end of the cold air side, and the height of the air mix damper is the end in the vehicle width direction It is characterized in that it becomes the highest in the rib standing on the part .

  According to such a vehicle air conditioner of the present invention, since the air flow converging unit that increases the speed by turning the cold air toward the center during the heating operation is provided at the cold air side tip of the air mix damper, the cold air with a small air volume is provided. Can be turned toward the center and the flow velocity can be increased. As a result, during heating operation, the ratio of cool air flowing in the center of the passenger compartment with a larger amount of hot air than that on the side is increased and mixed, and the ratio of cool air flowing in the center of the passenger compartment with a smaller amount of hot air than on the side is obtained. Can be reduced and mixed.

An air conditioner for a vehicle according to the present invention includes an evaporator and a heater core arranged in an air flow path in a casing, and a vehicle interior air temperature that air-conditions air introduced into the air flow path passes through the evaporator. A vehicle air conditioner in which a mixing ratio of cool air to be cooled and warm air to be heated by passing through the heater core is adjusted according to an opening degree of an air mix damper provided at a junction, the air mix damper Is provided with a reheat prevention damper that operates integrally, and the warm air flowing into the merge portion during cooling operation is turned toward the center at the tip of the warm air side of the surface of the merge portion side of the reheat prevention damper to increase it. A fast air flow converging part is provided.

  According to such a vehicle air conditioner of the present invention, the air mix damper is provided with a reheat prevention damper in which the air mix damper operates integrally, and the warm air is placed closer to the center during cooling operation at the warm air side tip of the reheat prevention damper. Since the air flow converging unit that is turned to increase the speed is provided, the flow of the warm air with a small air volume can be turned toward the center and the flow velocity can be increased. As a result, during cooling operation, the ratio of hot air flowing in the center of the passenger compartment with a larger amount of cool air than that on the side is increased and mixed, and the ratio of hot air flowing in the center of the passenger compartment with a lower amount of cool air than on the side Can be reduced and mixed.

In the above vehicle air conditioner, the air flow focusing unit before SL through channel formed in the axial center portion of the rib that is provided upright on the temperature Kazegawa tip of reheat prevention damper is preferred. In the case where the air mix damper is provided with a reheat prevention damper, such an air flow converging unit may be only one of the cold air side tip of the air mix damper and the hot air side tip of the reheat prevention damper, or , Both may be provided.
In this case, the rib may be provided in parallel with the rotation axis of the air mix damper, or may be provided in a square shape that guides the flow to the central portion in the axial direction.

As a suitable through-flow channel in the present invention, there are a concave portion provided with one or a plurality of steps formed in the rib, and one or a plurality of slits formed in the rib, and these may be appropriately combined. .
In addition, another suitable through-flow path is formed by disposing a plurality of the ribs divided in the axial direction in the air flow direction so as to partially overlap each other in the region excluding the central portion in the axial direction. But you can. The rib in this case may also be provided in parallel with the rotation axis of the air mix damper, or may be provided in a square shape that guides the flow to the axial center.
The through flow passage of the present invention may be a movable door that can slide in the axial direction and adjust the flow passage width, as well as a recess having a shape such as a triangle, a semicircle, and a semi-ellipse.

  In the above vehicle air conditioner, it is preferable that the through-flow passage is provided with guide ribs that suppress the axial dispersion of the air flow, so that the temperature distribution in the vehicle interior width direction is mixed when the cold air and the hot air are mixed. It becomes possible to suppress generation | occurrence | production further, and is effective in promotion of mixing of cold air and warm air.

Also among the suitable air flow focusing unit in the present invention may be pre-Symbol bypass air path formed through or removed damper member in warm Kazegawa tip center reheat preventing damper. Even with such a bypass air passage, the flow of cold air with a small air volume can be turned toward the center, and the flow velocity can be increased.

  According to the present invention described above, it is possible to suppress or eliminate the occurrence of a deviation in the blown air temperature due to a large amount of cold air or hot air flowing toward the center of the vehicle interior, and blow out conditioned air having a substantially uniform temperature into the vehicle interior. Providing a comfortable and comfortable interior environment.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment (1st Embodiment) of the vehicle air conditioner which concerns on this invention, (a) is a perspective view which shows the outline | summary of the air mix damper which provided the 1 step | paragraph recessed part, (b) is. It is a front view of the air mix damper which provided the two-step recessed part. It is a perspective view which shows a 1st modification about the air mix damper shown to Fig.1 (a). It is a perspective view which shows a 2nd modification about the air mix damper shown to Fig.1 (a). It is a perspective view which shows a 3rd modification about the air mix damper shown to Fig.1 (a). It is a figure which shows one Embodiment (2nd Embodiment) of the vehicle air conditioner which concerns on this invention, and is a perspective view which shows the structural example applied to the reheat prevention damper of an air mix damper. FIG. 1A is a modification in which guide ribs are additionally provided in the air mix damper shown in FIG. 1A, and FIG. 1A shows a fifth modification in which guide ribs are additionally provided only at the center side end portion serving as a through passage. The perspective view, (b) is a plan view showing a sixth modified example in which a plurality of guide ribs are additionally provided over the entire area of the ribs erected on the air mix damper, and (c) is a front view as viewed from the front end of the cold air side of (b). It is. It is a perspective view which shows the modification which provided the guide rib in addition to the reheat prevention damper shown in FIG. It is a longitudinal cross-sectional view which shows the schematic structural example of the vehicle air conditioner which concerns on this invention.

Hereinafter, an embodiment of a vehicle air conditioner according to the present invention will be described with reference to the drawings.
FIG. 8 is a longitudinal sectional view of a schematic configuration example schematically showing an example of a vehicle air conditioner according to the present embodiment, as viewed from the left side of the vehicle. In addition, the arrow in a figure has shown the flow direction of main air (Air before an air conditioning, cold wind, warm air, air after an air conditioning, etc.).

As shown in FIG. 8, the vehicle air conditioner 1 of the present embodiment has a casing 2, and an air introduction unit 3 that introduces air taken from the front of the vehicle into the inside of the air conditioner 1 in the casing 2. And an evaporator 4 that cools the introduced air, and a heater core 5 that is disposed in the lower rear half of the evaporator 4 and heats the cooled air from the evaporator 4. The evaporator 4 is a heat exchanger that cools the introduced gas-phase refrigerant by absorbing heat from the air, and the heater core 5 is a heat exchanger that heats the air by absorbing heat from the introduced heat source (for example, high-temperature engine coolant). It is a vessel.
Note that the air taken in from the front of the vehicle can be selectively switched between outside air taken from outside the vehicle compartment and inside air taken from the vehicle interior.

In addition, a partition plate 6 is disposed behind the heater core 5 installed in the casing 2, and the partition plate 6 forms a warm air passage a between the heater core 5. The air heated by the heater core 5 by the ventilation air passage a is mixed with the cooling air that has passed through the cold air air passage b immediately after the evaporator 4, so that the air is introduced to the air mixing region 7 that is a merging portion. ing.
The air mix region 7 is provided with an air mix damper 8 for adjusting the amount of air that bypasses the heater core 5 and the amount of air that flows into the heater core 5, and the amount of cooling air (cool air amount) cooled by the evaporator 4; The mixing ratio with the amount of heated air (warm air amount) heated by the heater core 5 can be adjusted. The illustrated air mix damper 8 is disposed in the vehicle width direction of the vehicle.

In addition, a foot air passage 9 is formed between the partition plate 6 and the rear portion 2a of the casing 2 to guide the conditioned air to the feet of the passenger. The air guided to the foot air passage 9 flows into the shallow box-like foot case (not shown) provided in the lower part of the casing 2 through the foot outlet 16 and then the air-conditioned air is applied to the front foot and the rear foot. It comes to be supplied. A foot damper 15 is provided at the entrance of the foot air passage 9.
On the other hand, in the upper part of the casing 2, a face air outlet 11 is provided in the vicinity of the upper portion of the air mix region 7, and further, a defrost air outlet 12 is provided in front of the face air outlet 11. Yes. Further, a face damper 13 is provided at the face air outlet 11, and a defrost damper 14 is provided at the defrost air outlet 12.

  In such a vehicle air conditioner 1, the four dampers 8, 13, 14, 15 are centered on the support shafts 8 a, 13 a, 14 a, 15 a, respectively, in the fan-shaped range indicated by the two-dot chain line and the thin line in the drawing. The air-conditioning air adjusted to a desired temperature is adjusted from the face air outlet 11, the defrost air outlet 12, and the foot air outlet 16 in various air blowing modes while adjusting the air volume. I try to blow it out. Examples of the various modes include a face mode, a bi-level mode, a foot mode, a foot differential mode, and a defrost mode.

  The face mode is a mode in which air is blown out only from the face outlet 11. The bi-level mode is a mode in which cool air is blown from the face air outlet 11 and warm air is blown from the foot air outlet 16. The foot mode is a mode in which most of the air is blown out from the foot outlet 16 and the rest is blown out from the defrost outlet 12. The foot differential mode is a mode in which air is blown out from both the defrost outlet 12 and the foot outlet 16. The defrost mode is a mode in which air is blown out only from the defrost outlet 12.

In such a vehicle air conditioner 1, the air temperature cooled by the evaporator 4 (cold air) and the air heated by the heater core 5 (warm air) are mixed to bring the air-conditioned air temperature to a desired value. I have control. In order to set the air temperature, the opening / closing angle of the air mix damper 8 is changed, and the amount of air heated by passing through the heater core 5 is adjusted.
The illustrated air mix damper 8 includes a reheat prevention damper 17 that rotates integrally around a support shaft 8a. The reheat prevention damper 17 is a damper that is fully closed so that hot air does not flow into the air mix region 7 from the warm air passage a during the cooling operation in which the mixing ratio is 100% and the cooling capacity is maximized. is there.

<First Embodiment>
As described above, the vehicle air conditioner 1 according to the present embodiment includes the evaporator 4 and the heater core 5 arranged in the air flow path in the casing 2, and is a vehicle that air-conditions the air introduced into the air flow path. The indoor blowing temperature is adjusted so that the mixing ratio of the cool air cooled by passing through the evaporator 4 and the warm air heated by passing through the heater core 5 is adjusted according to the opening degree of the air mix damper 8 provided at the junction. It has become.
In the present embodiment, for example, as shown in FIG. 1A, an air flow converging unit 20 is provided at the tip of the cold air side of the air mix damper 8 to increase the speed by turning the cold air toward the center during heating operation. It has been.

In the air flow converging unit 20 in FIG. 1A, for example, a rib 21 is erected on the cold air side tip of an air mix damper 8 having a substantially rectangular plate shape, and a concave portion 22 formed in the central portion in the axial direction of the rib 21. It is a through flow path. In this case, the recess 22 is a single-stage rectangle. For example, as in the air flow converging part 20A shown in FIG. It is good also as a rectangular-shaped penetration channel which has a plurality of steps (two or more steps).
Such concave portions 22 and 22A are portions in which a part of the ribs 21 and 21A having a substantially rectangular plate shape is removed in a rectangular shape, and the opening degree of the cold air passage b is substantially fully closed or becomes small during heating operation. In addition, a flow of cool air is collected in the central portion in the axial direction of the air mix damper 8, that is, in the central portion in the vehicle width direction of the vehicle and becomes a cool air flow path that guides the air mix region 7.

  And according to the vehicle air conditioner 1 provided with such an air flow converging unit 20, the flow of cold air with a small air volume is collected by turning toward the center during heating operation, and the cold air collected near the center is The flow velocity increases by flowing through a narrow area. Therefore, in the air mix region 7 during heating operation, it is possible to collect a flow of cold air with a small air volume at the central portion and flow it at a relatively high flow rate with respect to a flow of hot air with a large air volume and a large dynamic pressure. Therefore, the warm air and the cold air can be mixed substantially uniformly.

  As a result, during the heating operation, the ratio of the cool air flowing in the center of the passenger compartment where the amount of hot air was larger than that on the side of the passenger compartment is increased and mixed, and the amount of hot air is less than that on the side. Since the ratio of the cool air flowing to the center of the passenger compartment can be reduced and mixed, the conditioned air blown into the passenger compartment can suppress or eliminate the temperature deviation that has occurred in the vehicle width direction. Therefore, by blowing the conditioned air having a substantially uniform temperature into the vehicle interior, it is possible to provide a comfortable vehicle interior environment for passengers in the vehicle interior.

  Further, the rib 21 of the above-described embodiment is erected in parallel with the cold air side tip of the air mix damper 8, that is, in parallel with the outer peripheral end side of the air mix damper 8 that rotates about the support shaft 8a. However, the present invention is not limited to this. For example, it may have a square shape in which the central portion is close to the support shaft 8a. With such a square shape, the inclined surface of the rib 21 can smoothly guide the flow of cold air to the air converging unit 20 and increase the speed.

By the way, about the penetration flow path used as the air flow focusing part 20, it is not limited to the recessed part 22 shown to Fig.1 (a), (b), For example, the modification illustrated below is possible.
In the first modification shown in FIG. 2, one or a plurality of slits 23 may be provided as a through flow path that becomes the air flow converging unit 20 </ b> B. 2 has three slits 23 on both sides of the recess 22 shown in FIG. 1A, but may have only one or a plurality of slits 23. Good. When the through-flow path is formed only by the slit 23, the cold air during the heating operation may be converged to the central part by increasing the slit width and the number of slits in the central part.

In the second modified example shown in FIG. 3, ribs 21 </ b> C whose axial direction is divided into a plurality (six in the illustrated example) are erected as through-flow passages serving as air flow converging portions 20 </ b> C. In this case, ribs 21C are erected in the region excluding the central portion that becomes the through flow passage in the axial direction, and each rib 21C partially overlaps in the axial direction, and cold air (indicated by a white arrow in the figure) The air flow is shifted in the flow direction of the air flow). That is, when viewed from the cold air-side tip (upstream in the direction of cold air flow) of the air mix damper 8, a through-flow passage serving as an air flow converging portion 20C is formed at the central portion, and a plurality of both sides (in the illustrated example, The three ribs 21C overlap to function in the same manner as the continuous ribs. As a result, the rib 21C becomes substantially the same as that shown in FIG.
The plurality of ribs 21 </ b> C are arranged in parallel with the support shaft of the air mix damper 8. However, for example, the rib 21 </ b> C may have a square shape with the center portion approaching the support shaft 8 a side.

In the third modified example shown in FIG. 4, a bypass air passage 24 formed by penetrating or removing a damper member is provided in the center of the cold air side tip of the air mix damper 8 as a through flow passage serving as the air flow converging portion 20 </ b> D. It has been. The shape and number of the bypass air passage 24 are not particularly limited, and may be appropriately selected such as a rectangle or a circle.
With the air flow converging part 20D of the through-flow passage that forms such a bypass air passage 24, ribs are unnecessary, the flow of cold air with a small air volume is turned toward the center, and the flow velocity is increased. Can do.

  As described above, various modifications can be made to the through-flow path serving as the air flow converging unit 20, and each modification may be adopted alone or in combination as appropriate. In addition, as the through channel of the present embodiment, a movable door that can slide in the axial direction and adjust the channel width is adopted as well as a concave portion having a shape such as a triangle, a semicircle, and a semi-ellipse. May be.

<Second Embodiment>
Next, a second embodiment according to the present invention will be described with reference to FIG. This embodiment is applied to the reheat prevention damper 17 that rotates integrally with the air mix damper 8. The same reference numerals are given to the same parts as those of the above-described embodiment, and the detailed description thereof is omitted.
In the present embodiment, for example, as shown in FIG. 5, an air flow converging unit 30 is provided at the tip of the warm air side of the reheat prevention damper 17 to increase the speed by turning the warm air toward the center during the cooling operation. Yes.

The illustrated air flow converging section 30 has, for example, a rib 31 provided upright at the end of the hot air side of a reheat prevention damper 17 having a substantially rectangular plate shape, and a recess 32 formed in the central portion in the axial direction of the rib 31. This is a through channel.
Such a concave portion 32 is a portion obtained by removing a part of the substantially rectangular plate-like rib 31 into a rectangular shape, and is reheated during a cooling operation in which the opening degree of the hot air passage a is substantially fully closed or reduced. A hot air flow path is formed at the central portion of the prevention damper 17 in the axial direction, that is, at the central portion in the vehicle width direction of the vehicle and collects the flow of warm air and leads it to the air mix region 7.

  In addition, the above-described concave portion 32 may be a single-step rectangle, or may be one in which two or more steps are formed in the central portion. And about the penetration channel and rib in this case, the same composition of the above-mentioned embodiment and each modification is adopted similarly, for example, making a slit a penetration channel and arranging a rib in the shape of a C, for example. Is possible.

  And according to the vehicle air conditioner 1 provided with such an air flow converging unit 30, the flow of warm air with a small air volume is collected by turning toward the center during cooling operation, and the temperature collected near the center is collected. Wind speed increases by flowing through a narrow area. Therefore, in the air mix region 7 during cooling operation, it is possible to collect a flow of warm air with a small air volume at the central portion and flow it at a relatively high flow rate with respect to a flow of cold air having a large air volume and a large dynamic pressure. Thus, the hot air and the cold air are mixed almost uniformly.

  As a result, during cooling operation, the ratio of the warm air flowing in the center of the passenger compartment where the amount of cool air was larger than that on the side of the passenger compartment is increased and mixed, and the amount of cold air is less than that on the side. Since the ratio of the warm air flowing to the center of the passenger compartment can be reduced and mixed, the temperature deviation generated in the vehicle width direction of the conditioned air blown into the passenger compartment is suppressed or eliminated. Therefore, by blowing the conditioned air having a substantially uniform temperature into the vehicle interior, it is possible to provide a comfortable vehicle interior environment for passengers in the vehicle interior.

  Now, the air flow converging units 20 and 30 described in the first and second embodiments described above, when the air mix damper 8 includes the reheat prevention damper 17, You may provide only in either one of the hot air | winding side front-end | tips of the heat prevention damper 17, or you may provide in both.

Moreover, in the vehicle air conditioner 1 described above, the through-flow passages described in the embodiments and the modified examples have an air flow of cold air or warm air dispersed in the axial direction as shown in FIGS. 6 and 7, for example. It is desirable to have a guide rib 40 that suppresses this.
In the embodiment shown in FIG. 6A, a pair of guide ribs 40 are provided opposite to each other in the direction of the support shaft 8a from both ends of the recess 22 shown in FIG. The guide rib 40 is provided with a plate-like guide member provided upright on the air mix damper 8 in a direction perpendicular to the support shaft 8a. It may be narrowed.

By installing such guide ribs 40, the cool air that has been turned to the center by the air flow converging unit 20 and increased in speed is guided to the air mix region 7 through the flow path formed between the opposing surfaces of the guide ribs 40. It is burned. For this reason, it becomes possible to prevent or suppress the flow of the cold air from spreading in the width direction, and as a result, the mixing of the cold air and the hot air is further promoted.
Accordingly, the conditioned air that is blown into the passenger compartment has a substantially uniform distribution of the blowing temperature in the vehicle width direction.

Further, for example, as shown in FIGS. 6B and 6C, a plurality of such guide ribs 40 may be embedded in the air mix damper 8 so as to divide the axial direction into a plurality of parts. Such a dividing rib 40 divides the confluence portion of the cold air into a plurality of regions, so that it is possible to suppress or prevent the temperature distribution from occurring in the width direction by improving the mixed state with the cold air / warm air. The uniformity of the blowing temperature in the width direction is further ensured.
Similarly, on the reheat prevention damper 17 side, for example, as shown in FIG. 7, by providing a pair of guide ribs 40 facing each other in the direction of the support shaft 8a from both ends of the recess 32, the flow of warm air is increased in the width direction. Spreading can be prevented, and the temperature of air-conditioned air blown in the vehicle width direction can be made uniform.

Moreover, since the rib 21 mentioned above is installed in the front-end | tip of the air mix damper 8, at the time of air_conditionaing | cooling operation with a large opening degree, it becomes hardly channel resistance, and can prevent the air volume fall of cold air.
Similarly, since the rib 31 described above is installed at the tip of the reheat prevention damper 17, it hardly causes flow path resistance during a heating operation with a large opening, and can suppress a decrease in the amount of warm air.
Each of the above-described embodiments is not only applicable independently, but also has an appropriately combined configuration, for example, an air mix damper 8 including an air flow converging unit 20 and a reflow unit including an air flow converging unit 30. It goes without saying that a configuration using the heat-preventing damper 17 in combination is possible.

As described above, according to each of the above-described embodiments and modifications thereof, it is possible to make the blowing temperature uniform in the vehicle width direction, so that cold air or hot air with a large airflow flows toward the center side of the vehicle interior and blown air It becomes possible to suppress or eliminate the occurrence of deviation in temperature, and as a result, it is possible to provide a comfortable vehicle interior environment by blowing out conditioned air having a substantially uniform temperature into the vehicle interior.
In addition, this invention is not limited to embodiment mentioned above, In the range which does not deviate from the summary, it can change suitably.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Casing 3 Air introduction part 4 Evaporator 5 Heater core 6 Partition plate 7 Air mix area 8 Air mix damper 13 Face damper 14 Defrost damper 15 Foot damper 17 Reheat prevention damper 20, 20A-20D, 30 Air flow condensing part 21, 21A, 31 Rib 22, 22A, 32 Recess 23 Slit 24 Bypass air passage 40 Guide rib a Hot air air passage b Cold air air passage

Claims (8)

An evaporator and a heater core disposed in an air flow path in the casing are provided, and a blowout temperature in the passenger compartment that air-conditions the air introduced into the air flow path passes through the cool air that is cooled by passing through the evaporator and the heater core. A vehicle air conditioner that is adjusted according to the degree of opening of the air mix damper provided in the merging portion with a mixing ratio with warm air heated by
A rib that guides the cool air to the through passage formed in the center in the vehicle width direction during heating operation is erected at the end of the air mix damper on the cold air side end of the air mix damper ,
The vehicle air conditioner is characterized in that a height of the air mix damper is highest at the ribs provided upright at the end in the vehicle width direction . An evaporator and a heater core disposed in an air flow path in the casing are provided, and a blowout temperature in the passenger compartment that air-conditions the air introduced into the air flow path passes through the cool air that is cooled by passing through the evaporator and the heater core. A vehicle air conditioner that is adjusted according to the degree of opening of the air mix damper provided in the merging portion with a mixing ratio with warm air heated by
The air mix damper is provided with a reheat prevention damper that operates integrally, and the warm air flowing into the merge portion at the time of cooling operation is placed closer to the center at the front end of the reheat prevention damper on the side of the merge portion. An air conditioner for a vehicle comprising an air flow converging unit that is turned to increase speed. The air flow focusing unit for a vehicle according to claim 2, wherein the pre-Symbol a through channel formed in the axial center portion of the rib that is provided upright on the temperature Kazegawa tip of reheat prevention damper Air conditioner. It said through passage, air-conditioning system according to claim 1 or 3, wherein the a recess having one or more steps formed in the rib. The vehicle air conditioner according to claim 1 or 3, wherein the through channel is one or a plurality of slits formed in the rib. The through channel is formed by disposing a plurality of the ribs divided in the axial direction in an air flow direction so as to partially overlap in a region excluding the central portion in the axial direction. The vehicle air conditioner according to claim 1 or 3. The vehicular air conditioner according to any one of claims 1 and 3, wherein the through flow path includes guide ribs that suppress axial dispersion of the air flow. The air flow focusing unit for a vehicle according to claim 2, wherein the pre-Symbol is the bypass air path formed through or removed damper member in warm Kazegawa tip central reheat prevention damper Air conditioner.

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