JP2001047844A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular air conditioner which can improve a dehumidifying function and also can save energy. SOLUTION: This vehicular air conditioner is equipped with an outside air introducing passage 12, an inside air introducing passage 11, a confluent part 13 which is connected to the downstream sides of these passages 12, 11, a main passage 10 which is connected to the downstream side of the confluent passage 13 and in which a temperature regulating part 6 is stored, and a discharging passage 14 for discharging air in an interior to the exterior. A rotary first heat exchanger 20 having a latent heat exchanging function for adsorbing and releasing moisture is extended over either one of the confluent passage 13 or the inside air introducing passage 11 and the discharging passage 14, and in the discharging passage 14, a heater 25 is installed on the upstream side of the first heat exchanger 20. The discharging passage 14 intersects either one of the outside air introducing passage 12 or the confluent passage 13 on the downstream side of the first heat exchanger 20, and in an intersection part, a second heat exchanger 30 having a sensible heat exchanging function is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle, which can suppress the humidity in a vehicle compartment even if internal air is circulated.

[0002]

2. Description of the Related Art A conventional general vehicle air conditioner is:
An evaporator, an air mixing door, and a heater core are sequentially arranged from the upstream side to the downstream side as a temperature control unit in the main passage of the casing from the upstream side to the downstream side, and at the upstream end of the casing, an outside air introduction passage for introducing air outside the vehicle, A downstream end of the casing, comprising: an inside air introduction passage for introducing air in the vehicle compartment; a merge passage for merging air from these two introduction passages; and an adjusting door for adjusting a mixing ratio of air from these introduction passages. The part is provided with a blowing part for blowing air into the vehicle interior. Further, this device is provided with a discharge passage for discharging air in the passenger compartment to the outside of the vehicle.

[0003] In the above-mentioned air conditioner, cooling and heating are generally performed by introducing fresh outside air. However, the efficiency of cooling and heating is reduced and energy consumption is increased. In particular, in the case of a vehicle with a low heat source equipped with an engine or a hybrid engine with good combustion efficiency, if heating is performed while introducing outside air as described above, heating at a desired temperature can not compensate for the decrease in heating efficiency. May not be achieved.

[0004] Therefore, it is conceivable to increase the circulation rate of air in the vehicle cabin and to minimize the ratio of fresh air introduction (the level at which carbon dioxide and odor emitted from the occupant are not accumulated). However, in such a case, the humidity inside the vehicle compartment increases, and the dew point decreases accordingly, so that the low-temperature window glass sometimes becomes cloudy.

[0005] Based on the above circumstances, the present applicant has developed an air conditioner described in Japanese Patent Application No. 11-132810. An equivalent device will be described with reference to FIG. A merging passage 13 'where the circulating inside air from the inside air introduction passage 11' and fresh outside air from the outside air introduction passage 12 'are mixed.
And a discharge passage 14 'through which the inside air is discharged, is provided with a rotatable total heat exchanger 20'. This total heat exchanger 20 'is provided with a number of passages, and a hygroscopic agent is applied to inner walls of the passages, and has a latent heat exchange function and a sensible heat exchange function. The latent heat exchange function is a function of performing heat transfer accompanied by adsorption and release of moisture, and the sensible heat exchange function is a function of performing heat transfer accompanied by a mere temperature change.
In the discharge passage 14 ', a heater 25' is disposed upstream of the total heat exchanger 20 '.

[0006] In the air conditioner of the above configuration, basically,
Mainly, the inside air is circulated through the inside air introduction passage 11 ', and the outside air is also introduced through the outside air introduction passage 12'. The circulating inside air and the introduced outside air are mixed in the joining passage 13 ′,
Total heat exchange is performed between the mixture and the exhaust air flowing through the exhaust passage 14 '. Particularly in the case of heating in winter, the air-fuel mixture has a lower temperature than the discharged internal air because it contains the introduced external air, and receives heat from the discharged internal air to be introduced into the main passage 10 'of the casing 1'.
Further, the air-fuel mixture contains circulating air, and therefore has a high humidity. On the other hand, the exhaust inside air has a higher absolute humidity than the air-fuel mixture, but the relative humidity becomes lower because it is heated by the heater 25 '. Therefore, with the rotation of the total heat exchanger 20 ',
In the merging passage 13 ', the moisture in the air-fuel mixture is adsorbed, and in the discharge passage 14', the moisture is released into the exhaust air. Thus, the air-fuel mixture after passing through the total heat exchanger 20 'is dehumidified.

[0007]

The air conditioner of the above configuration has the following disadvantages. Total heat exchanger 20 '
Has a latent heat exchange function and a sensible heat exchange function, but it is difficult to bring both functions to a satisfactory level. If the latent heat exchange function is raised to give priority to dehumidification, the sensible heat exchange function is reduced, so that the heat energy contained in the exhaust air cannot be sufficiently recovered, and the heat energy generated from the heater 25 'during heating is recovered. Couldn't do enough.

[0008]

According to a first aspect of the present invention, in a vehicle air conditioner, the first rotary heat exchanger having a latent heat exchange function of absorbing and releasing moisture is provided. A heater is provided on one of the passage and the inside air introduction passage and the discharge passage, and a heater is provided on the discharge passage upstream of the first heat exchanger.
A second heat exchanger having a sensible heat exchange function is provided between a downstream portion of the first heat exchanger in the discharge passage and one of the outside air introduction passage and the merge passage. Features.

According to a second aspect of the present invention, in the vehicle air conditioner of the first aspect, the discharge passage is orthogonal to one of the outside air introduction passage and the merging passage, and the second passage is provided at the intersection. An orthogonal sensible heat exchanger is provided as a heat exchanger,
The sensible heat exchanger has a first group of narrow passages extending in the direction of the discharge passage, and a second group of narrow passages extending in the direction of the one passage intersecting the discharge passage. The first and second groups of narrow passages are arranged on different planes, and are alternately stacked in a direction orthogonal to two intersecting passages.

According to a third aspect of the present invention, in a vehicle air conditioner, a rotary first heat exchanger having a latent heat exchange function of adsorbing and releasing moisture is provided over the merging passage and the discharge passage. At the same time, a heater is provided in the discharge passage upstream of the first heat exchanger, and the discharge passage intersects with the outside air introduction passage downstream of the first heat exchanger. A second heat exchanger having an exchange function is provided.

According to a fourth aspect of the present invention, in a vehicle air conditioner, a rotary first heat exchanger having a latent heat exchange function of absorbing and releasing moisture is provided over the merging passage and the discharge passage. At the same time, a heater is provided in the discharge passage upstream of the first heat exchanger, and the discharge passage intersects the merging passage downstream of the first heat exchanger, and a sensible heat exchange function is provided at the intersection. Characterized in that a second heat exchanger having:

According to a fifth aspect of the present invention, in a vehicle air conditioner, a first rotary heat exchanger having a latent heat exchange function of absorbing and releasing moisture is provided across the inside air introduction passage and the discharge passage. In addition, a heater is provided in the discharge passage upstream of the first heat exchanger. The discharge passage intersects the outside air introduction passage downstream of the first heat exchanger. A second heat exchanger having a heat exchange function is provided.

According to a sixth aspect of the present invention, in a vehicle air conditioner, a first rotary heat exchanger having a latent heat exchange function of adsorbing and releasing moisture is provided across the inside air introduction passage and the discharge passage. A heater is provided in the discharge passage upstream of the first heat exchanger. The discharge passage intersects with the merge passage downstream of the first heat exchanger. A second heat exchanger having an exchange function is provided.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a casing.
In the main passage 10, a blower 2, an evaporator 3, an air mixing door 4, and a heater core 5 are installed in order from the upstream side to the downstream side. The evaporator 3, the air mix door 4, and the heater core 5 constitute a temperature control unit 6 in the claims.

The right end of the casing 1 in the figure, that is, the downstream end of the main passage 10 has a vent outlet, a defrost outlet, and a foot outlet which are respectively opened and closed by doors (not shown). Here, in order to simplify the drawing, it is shown by one blow-out portion 7.

Next, a casing 1 which is a characteristic part of the present invention.
The structure of the left end in FIG. At the left end of the casing 1, an inside air introduction passage 11, an outside air introduction passage 12, a merging passage 13 and a discharge passage 14 are formed. The inside air introduction passage 11 is for circulating the air in the vehicle compartment, is formed of an opening that opens into the vehicle compartment, and is connected to the merging passage 13.

The discharge passage 14 is for discharging the air in the passenger compartment to the outside of the vehicle. The discharge passage 14 is parallel to and adjacent to the merging passage 13 and has an upstream end through a duct (not shown). The downstream end is connected to the outside of the vehicle via a duct (not shown).

The outside air introduction passage 12 is for introducing fresh air outside the vehicle, is orthogonal to (intersects) the discharge passage 14, and has an upstream end connected to the outside of the vehicle via a duct (not shown). The downstream end thereof is connected to the merging passage 13.

In the merging passage 13, the inside air introduction passage 11
And the fresh outside air from the outside air introduction passage 12 merges. The blower 2 is disposed in the merging passage 13, and the downstream end thereof is connected to the upstream end of the main passage 10.

An adjusting door 15 is rotatably provided in the merging passage 13. This adjusting door 15 is shown in FIG.
As shown by the imaginary line in FIG. 3, the position where the inside air introduction passage 11 is fully opened and the outside air introduction passage 12 is fully closed, and conversely, the inside air introduction passage 11 is fully closed and the outside air introduction passage 12 is fully opened. The angle can be adjusted between the positions. Usually, it is located between these two positions and circulates the inside air to increase the cooling and heating efficiency, and introduces fresh outside air to suppress an increase in the concentration of odor and carbon dioxide emitted by the occupant. The mixing ratio of the circulating inside air and the introduced outside air is 70
About 75 to about 30 to 25 is preferable.

Next, the components mounted on the left end of the casing 1 will be described. A hole 16a is formed in the wall 16 that separates the merging passage 13 and the discharge passage 14, and a rotary total heat exchanger 20 (a dehumidifying rotor, a first heat exchanger) is inserted into the hole 16a. . As described above, the total heat exchanger 20 is a heat exchanger having both a latent heat exchange function and a sensible heat exchange function, and has a configuration in which the latent heat exchange function is emphasized in the present embodiment.

As shown in FIG. 3, the total heat exchanger 20 comprises a short cylindrical main body 21, a gear portion 22 formed on the outer periphery of the main body 21, and a small-diameter gear 23 meshing with the gear portion 22. And a motor 24 for rotating the gear 23
(Actuator). The main body 21 has a spiral plate and a corrugated plate arranged between adjacent spiral portions of the spiral plate and having a spiral shape as a whole. And are formed in parallel with. These plates are made of ceramic fibers,
For example, silica gel, zeolite, lithium chloride or the like is attached as a moisture absorbent. The area occupied by the merging passage 13 in the total circulation area of the total heat exchanger 20 is larger than the area closed by the discharge passage 14, for example, about 4: 1.

An orthogonal sensible heat exchanger 30 (second heat exchanger) is accommodated in the space at the intersection of the outside air introduction passage 12 and the discharge passage 14. As shown in FIG. 2, the sensible heat exchanger 30 includes a large number of flat plates 3 spaced apart in parallel.
1 and the first and second plates alternately interposed between the flat plates 31.
Corrugated plates 32, 33. The flat plate 31 and the corrugated plates 32 and 33 are formed of a material having good thermal conductivity such as aluminum. The laminating direction of these plates 31, 32, 33 is orthogonal to the passages 12, 14. Each corrugated sheet 3
In Nos. 2 and 33, the peaks and valleys of the waves are straight and extend in parallel. The extending directions of the peaks and valleys of the first and second corrugated plates 32, 33 are orthogonal to each other. A large number of narrow first passages 34 are formed between the first corrugated sheet 32 and the flat plate 31 adjacent thereto, and the second group of narrow passages 34 are also formed between the second corrugated sheet 33 and the adjacent flat plate 31. Many narrow passages 35 are formed. The first group of passages 34 is connected to the discharge passage 14. The second group of passages 35 is orthogonal to the first group of passages 34 and is connected to the outside air introduction passage 12.

In the discharge passage 14, the total heat exchanger 2
0, the heater 2 is located near the total heat exchanger 20.
5 are arranged. A fan 26 is disposed between the total heat exchanger 20 and the sensible heat exchanger 30 on the downstream side. The fan 26 may be arranged on the upstream side of the total heat exchanger 20 or on the downstream side of the sensible heat exchanger 30.

Next, the operation of the air conditioner having the above configuration will be described focusing on the operation of the heat exchangers 20 and 30. In the present embodiment, heating operation in winter, cooling operation in summer,
Rotation of the total heat exchanger 20 and energization and heat generation of the heater 25 are performed, and during operation in spring and autumn, the total heat exchanger 20 does not rotate and the heater 25 is not energized.

The operation during winter heating will be described. The cool outside air introduced from the outside air introduction passage 12 exchanges sensible heat with warm exhausted inside air in the sensible heat exchanger 30 and is heated. Merging passage 1
In 3, the warmed outside air and the circulating inside air from the inside air introduction passage 11 are mixed and guided to the total heat exchanger 20.

In the total heat exchanger 20, in the merging passage 13, the moisture contained in the mixture (mainly the moisture contained in the circulating air) is adsorbed by the adsorbent. The adsorbed moisture is released in the exhaust passage 14 as the total heat exchanger 20 rotates. The absolute humidity of the exhaust air flowing through the exhaust passage 14 is higher than that of the air-fuel mixture. The heat generated by the heater 25 warms the introduced outside air in the process of passing through the sensible heat exchanger 30.

As described above, by introducing fresh outside air, it is possible to prevent the concentration of the odor and carbon dioxide emitted by the occupant from increasing, and by increasing the ratio by circulating the inside air, the warm air is reduced to the outside. And the heating efficiency can be increased. Moreover, the total heat exchanger 20
The dehumidification of the circulating air is performed at
It is possible to prevent the window glass from fogging due to condensation. In addition, the total heat exchanger 20 has a dehumidification function (latent heat exchange function).
And the sensible heat exchange function is insufficient, the sensible heat exchanger 30 provided on the downstream side can recover the heat of the exhausted internal air and supply it to the introduced external air. Further, heat generated by the heater 25 can be recovered. As described above, the heating efficiency can be further increased to save energy, and the heating at the desired temperature can be reliably performed even when the vehicle is equipped with a low heat source vehicle.

Next, the summer cooling operation will be described. The high-temperature introduced outside air exchanges sensible heat with the cold discharged inside air in the sensible heat exchanger 30, is cooled, and is introduced into the merge passage 13. The absolute humidity of the mixture of the outside air introduced into the joining passage 13 and the inside air introduced from the inside air introduction passage 11 is higher than the exhaust inside air. This is because the humidity of the introduced outside air is high. Moreover,
Since the discharge inside air is heated by the heater 25 and the relative humidity decreases, the moisture contained in the air-fuel mixture in the merging passage 13 is adsorbed through the total heat exchanger 20 in a rotating state, and the exhaust air is discharged in the discharge passage 14. The release of moisture is made. Thus, the evaporator 3 can reduce the cooling load without consuming cooling energy for dehumidification.

In the first embodiment described above, the sensible heat exchanger 3
At 0, the sensible heat exchange efficiency is high because the sensible heat exchange is performed between the exhaust inside air and the introduced outside air having a large temperature difference. The sensible heat exchanger 30 is composed of first and second stacked layers orthogonal to each other.
Since the sensible heat exchange is performed through the passages 34 and 35 of the group, the sensible heat exchange rate can be further increased with a simple structure.

Next, a second embodiment of the present invention will be described.
This will be described with reference to FIG. This embodiment is the same as the first embodiment in that the total heat exchanger 20 is provided between the merging passage 13 and the discharge passage 14. However, in the present embodiment, the discharge passage 14 intersects not the outside air introduction passage 12 but the merging passage 13 at a right angle, and the sensible heat exchanger 30 is provided at the intersection. And different. In order to make the merging passage 13 and the discharge passage 14 intersect at a right angle, the merging passage 13 is bent at a right angle, and the blower 2 is arranged at this corner.

In the above-described second embodiment, since the sensible heat exchange is performed between the air-fuel mixture and the discharged internal air, the efficiency of the sensible heat exchange is lower than that of the first embodiment. Since the total heat exchanger 20 and the sensible heat exchanger 30 are provided between them, the passage structure can be simplified.

Next, a third embodiment of the present invention will be described.
This will be described with reference to FIG. This embodiment is the same as the first embodiment in that the discharge passage 14 intersects the outside air introduction passage 12 and a sensible heat exchanger 30 is provided at the intersection. However, this embodiment is different from the first embodiment in that the total heat exchanger 20 is provided between the exhaust passage 14 and the inside air introduction passage 11. In this embodiment, adjustment doors 15a and 15b for adjusting the opening degree are provided in each of the inside air introduction passage 11 and the outside air introduction passage 12. These adjusting doors 15a and 15b are interlockingly controlled.

In the third embodiment, as in the first embodiment, the sensible heat exchange is performed between the exhaust air inside and the outside air having a large temperature difference in the sensible heat exchanger 30, so that the sensible heat exchange efficiency is improved. high. In addition, at the time of heating, since the humid circulating inside air is dehumidified by the total heat exchanger 20 before being mixed with the introduced outside air, the dehumidification efficiency is higher than that of the first embodiment. Note that, in this embodiment, the humidity of the outside air is not removed by the total heat exchanger 20 at the time of cooling, and the dehumidifying function is left to the evaporator 3.

Next, a fourth embodiment of the present invention will be described.
This will be described with reference to FIG. This embodiment is the most distant from the first embodiment. The discharge passage 14 intersects not the outside air introduction passage 12 but the merging passage 13 at a right angle, and a sensible heat exchanger 30 is provided at this intersection. This is different from the first embodiment in that it is similar to the second embodiment in FIG. Further, unlike the first embodiment, the total heat exchanger 20 is provided between the exhaust passage 14 and the inside air introduction passage 11.
It is similar to the third embodiment of FIG.

In the above-described fourth embodiment, as in the third embodiment, the dehumidifying effect of the vehicle interior during heating can be further enhanced, but the dehumidification during cooling is left to the evaporator 3.

The present invention is not limited to the above embodiment, and various modes are possible. For example, the first heat exchanger may be substantially a latent heat exchange function instead of a total heat exchanger.
The supporting of the hygroscopic agent may be a nonwoven fabric made of resin instead of ceramic fibers. The second heat exchanger may have some latent heat exchange function. The temperature control section may perform only heating. The fan 26 of the discharge passage 14 may be omitted. In this case, the inside air is discharged by utilizing the increase in the vehicle interior pressure due to the introduction of outside air. The rotation of the first heat exchanger and the driving of the heater may be executed based on detection signals from a humidity sensor in the vehicle compartment and a temperature sensor near the window glass. That is, the control means calculates a dew point based on the humidity detected by the humidity sensor, compares a temperature slightly higher than the calculated dew point with a temperature detected from the temperature sensor,
When the detected temperature is lower, the rotation of the first heat exchanger and the driving of the heater are performed.

[0038]

As described above, according to the first aspect of the present invention, when circulating inside the vehicle cabin and heating it to save energy, the first heat exchanger uses the circulating air or the air-fuel mixture. And latent heat exchange between the inside air and the exhaust air heated by the heater, thereby enabling dehumidification and preventing fogging of the window glass. In addition, the heat of the warm exhaust air can be recovered by the second heat exchanger and applied to the outside air or the air-fuel mixture, thereby further saving energy. Also, the heat of the heater can be recovered by the second heat exchanger. According to the second aspect of the present invention, by using an orthogonal sensible heat exchanger as the second heat exchanger, high sensible heat exchange efficiency can be obtained with a simple structure. According to the third and fifth aspects of the present invention, in the second heat exchanger, sensible heat exchange is performed between the introduced outside air and the discharged inside air, so that the heat of the discharged inside air can be more efficiently recovered. it can. According to the fifth and sixth aspects,
In the first heat exchanger, latent heat exchange is performed between the circulating air and the discharged air, so that the dehumidifying effect during heating can be further improved. In the fourth embodiment, since the first and second heat exchangers are provided between the merging passage and the discharge passage, the passage structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a cutaway perspective view showing a sensible heat exchanger used in the embodiment.

FIG. 3 is an enlarged cross-sectional view showing a structure of an upstream end portion of the embodiment.

FIG. 4 is a diagram corresponding to FIG. 3 of an air conditioner according to a second embodiment of the present invention.

FIG. 5 is a diagram corresponding to FIG. 3 of an air conditioner according to a third embodiment of the present invention.

FIG. 6 is a diagram corresponding to FIG. 3 of an air conditioner according to a fourth embodiment of the present invention.

FIG. 7 is a diagram corresponding to FIG. 3 of the air conditioner of the prior application.

[Explanation of symbols]

 Reference Signs List 6 Temperature control unit 7 Blow-out unit 10 Main passage 11 Inside air introduction passage 12 Outside air introduction passage 13 Merging passage 14 Drain passage 20 Total heat exchanger (first heat exchanger) 25 Heater 30 Sensible heat exchanger (Second heat exchanger)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Tagawa 39, Higashihara, Chiyo, Odai-gun, Osato-gun, Saitama Pref.

Claims (6)

[Claims] 1. An outside air introduction passage for taking in fresh air outside a vehicle, an inside air introduction passage for circulating air inside a vehicle cabin, a joining passage connected to the downstream side of the outside air introduction passage and the inside air introduction passage, A main passage connected to the downstream side of the passage, a temperature adjustment unit provided in the main passage for adjusting the temperature of the air passing through the main passage, and an air passage provided downstream of the main passage and passing through the temperature adjustment unit. A rotating first heat exchanger having a latent heat exchange function of adsorbing and releasing moisture in a vehicle air conditioner having a blowout section for blowing air into a room and a discharge passage for discharging air in the vehicle room to the outside of the vehicle. A vessel is provided over one of the merging passage and the inside air introduction passage and the discharge passage,
A heater is provided upstream of the first heat exchanger in the discharge passage, and a heater is provided between the downstream portion of the first heat exchanger in the discharge passage and one of the outside air introduction passage and the merge passage. A second heat exchanger having a sensible heat exchange function. 2. The discharge passage is orthogonal to one of the outside air introduction passage and the merge passage, and the second passage is provided at the intersection.
An orthogonal sensible heat exchanger is provided as a heat exchanger. The sensible heat exchanger includes a first group of a number of narrow passages extending in the direction of the discharge passage, and a direction of the one passage crossing the discharge passage. And a plurality of narrow passages of a second group extending in the direction, and the narrow passages of the first and second groups are arranged on different planes and are alternately stacked in a direction orthogonal to the two crossing passages. The air conditioner for a vehicle according to claim 1, wherein: 3. An outside air introduction passage for taking in fresh air outside the vehicle, an inside air introduction passage for circulating air in the vehicle interior, a joining passage connected to the downstream side of the outside air introduction passage and the inside air introduction passage, A main passage connected to the downstream side of the passage, a temperature adjustment unit provided in the main passage for adjusting the temperature of the air passing through the main passage, and an air passage provided downstream of the main passage and passing through the temperature adjustment unit. A rotating first heat exchanger having a latent heat exchange function of adsorbing and releasing moisture in a vehicle air conditioner having a blowout section for blowing air into a room and a discharge passage for discharging air in the vehicle room to the outside of the vehicle. A heater is provided on the merging passage and the discharge passage, and a heater is provided on the discharge passage on the upstream side of the first heat exchanger. The discharge passage is provided on the downstream side of the first heat exchanger on the outside air. It crosses the entrance passage, the intersection air conditioning apparatus for a vehicle, wherein a second heat exchanger having a sensible heat exchange function is provided. 4. An outside air introduction passage for taking in fresh air outside the vehicle, an inside air introduction passage for circulating air inside the vehicle cabin, a joining passage connected to the downstream side of the outside air introduction passage and the inside air introduction passage, A main passage connected to the downstream side of the passage, a temperature adjustment unit provided in the main passage for adjusting the temperature of the air passing through the main passage, and an air passage provided downstream of the main passage and passing through the temperature adjustment unit. A rotating first heat exchanger having a latent heat exchange function of adsorbing and releasing moisture in a vehicle air conditioner having a blowout section for blowing air into a room and a discharge passage for discharging air in the vehicle room to the outside of the vehicle. A heater is provided over the merging passage and the discharge passage, and a heater is provided on the discharge passage upstream of the first heat exchanger, and the discharge passage is provided on the downstream side of the first heat exchanger. Crossed, this intersection air conditioning apparatus for a vehicle, wherein a second heat exchanger having a sensible heat exchange function is provided. 5. An outside air introduction passage for taking in fresh air outside the vehicle, an inside air introduction passage for circulating air inside the vehicle interior, a joining passage connected to the downstream side of the outside air introduction passage and the inside air introduction passage, A main passage connected to the downstream side of the passage, a temperature adjustment unit provided in the main passage for adjusting the temperature of the air passing through the main passage, and an air passage provided downstream of the main passage and passing through the temperature adjustment unit. A rotating first heat exchanger having a latent heat exchange function of adsorbing and releasing moisture in a vehicle air conditioner having a blowout section for blowing air into a room and a discharge passage for discharging air in the vehicle room to the outside of the vehicle. A heater is provided over the inside air introduction passage and the discharge passage, and a heater is provided in the discharge passage upstream of the first heat exchanger, and the discharge passage is provided with the outside air downstream of the first heat exchanger. It crosses the entrance passage, the intersection air conditioning apparatus for a vehicle, wherein a second heat exchanger having a sensible heat exchange function is provided. 6. An outside air introduction passage for taking in fresh air outside the vehicle, an inside air introduction passage for circulating air in the vehicle interior, a joining passage connected to the downstream side of the outside air introduction passage and the inside air introduction passage, A main passage connected to the downstream side of the passage, a temperature adjustment unit provided in the main passage for adjusting the temperature of the air passing through the main passage, and an air passage provided downstream of the main passage and passing through the temperature adjustment unit. A rotating first heat exchanger having a latent heat exchange function of adsorbing and releasing moisture in a vehicle air conditioner having a blowout section for blowing air into a room and a discharge passage for discharging air in the vehicle room to the outside of the vehicle. A heater is provided over the inside air introduction passage and the discharge passage, and a heater is provided upstream of the first heat exchanger in the discharge passage, and the discharge passage is connected to the merger downstream of the first heat exchanger. It crosses the road, the vehicle air conditioning system, wherein a second heat exchanger having a sensible heat exchange function is provided in the intersection.