JPH106740A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To blow off clean air out of each opening of an air-conditioning case as checking any drop of an airflow quantity in this case. SOLUTION: A first air passage 19a ranging from an outside air inlet port 12 to a defroster opening and a second air passage 19b from a first inside air inlet port 13a to a foot opening both are partitively formed in an air- conditioning case, and since a filter 40 in installed in the first air passage 19a alone, any drop of an airflow quantity in the air-conditioning case can be checked as compared with a case that this filter 40 is installed in both these first and second air passage 19a and 19b. In addition, as relatively clean inside air is blown out of the foor opening, and the outside air purified by the filter 40 is also blown out of the defroster opening, the clean air can be blown into the car room from each opening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a first air passage and a second air passage formed in an air-conditioning case, and inside air can be sucked into the first air passage and outside air can be sucked into the second air passage. And a vehicle air conditioner.

[0002]

2. Description of the Related Art As a prior art of such a vehicle air conditioner, there is one disclosed in Japanese Patent Application Laid-Open No. 5-124426. Briefly describing the configuration of this prior art, an air conditioning case of a vehicle air conditioner has an inside air intake port and an outside air intake port formed at one end, and a foot opening and a defroster opening formed at the other end. ing.

A first air passage extending from the inside air inlet to the foot opening is provided in the air conditioning case.
A partition plate is formed to define a second air passage extending from the outside air intake port to the defroster opening. Further, an air flow is formed in the first and second air passages from one end to the other end. A blower is provided to generate.

[0004]

Here, the present inventors have tried to remove impurities in the air to the air conditioner for vehicles in order to purify the air blown into the vehicle interior from each opening. We tried to provide a filter to do this. However, when both the inside air from the inside air suction port and the outside air from the outside air suction port are passed through the filter, a large ventilation resistance is generated, which causes a problem that the air volume of the airflow in the air conditioning case is reduced.

[0005] The present invention has been made in view of the above problems, and while suppressing a decrease in the amount of airflow in an air conditioning case,
The purpose is to blow out clean air from each opening of the air conditioning case.

[0006]

In order to achieve the above object, outside air contains considerable impurities such as exhaust gas from vehicles, and inside air does not contain much impurities. Therefore, outside air needs to be purified. Focusing on the fact that the inside air does not need to be cleaned so much, in the invention according to any one of claims 1 to 4, the outside air suction port (12) is provided in the air conditioning case (100).
And a second air passage (19b) extending from the first air inlet (13a) to the foot opening (27). Filter (4) only in air passage (19a)
0) is provided.

According to such a configuration, the outside air intake port (1)
The outside air from 2) is the first air provided with the filter (40).
The air flows through the air passage (19a), and the first inside air suction port (13a)
From inside flows through the second air passage (19b) without decreasing the air volume. For this reason, compared with the case where both the inside air and the outside air pass through the filter (40), it is possible to suppress a decrease in the amount of airflow in the airflow case (100).

[0008] In addition, inside air that does not contain much impurities is blown out from the foot opening (27), and outside air that has been cleaned by the filter (40) is blown out from the defroster opening (28). Therefore, each opening (27, 2
From 8), clean air can be blown into the vehicle interior.
According to the second aspect of the present invention, the first air passage (19)
In (a), since the second inside air intake port (13b) is provided on the upstream side of the filter (40), the outside air intake port (1) is provided.
In addition to the outside air from 2), the second inside air suction port (13b)
Can also be cleaned.

According to the third aspect of the present invention, in the air-conditioning case (100), the second inside air inlet (13b) and the second air passage (19) are located downstream of the filter (40).
b) is provided, and when the first inside air suction port (13a) is fully opened, the communication path (50) is completely closed, and when the first inside air suction port (13a) is completely closed. And a suction port opening / closing means (14b) for fully opening the communication passage (50).

Therefore, when the first inside air suction port (13a) is fully opened by the suction port opening / closing means (14b) and the communication passage (50) is completely closed, the first inside air suction port (13) is closed.
The inside air from (a) flows through the second air passage (19b) without reducing the air volume, and the inside air from the second inside air suction port (13b) passes through the first air passage (19) provided with the filter (40). 19a). Therefore, the air conditioning case (100)
It is also possible to purify the inside air while suppressing a decrease in the air volume of the inside air flow.

Further, the first opening / closing means (14b) operates the first opening / closing means.
When the inside air intake port (13a) is fully closed and the communication passage (50) is fully opened, the second inside air intake port (13a) is closed.
b) flows through the first air passage (19a), and a part of the inside air passes through the communication passage (50) downstream of the filter (40) and passes through the second air passage (1).
9b). Therefore, the air conditioning case (10
Since all the inside air sucked into 0) passes through the filter (40) and is purified, the inside air can be purified at a higher speed.

Therefore, by providing the communication passage (50) and the suction port opening / closing means (14b), as described above,
It is possible to purify the inside air in two stages. In the invention described in claim 4, the air conditioning case (1
00) is disposed at the front of the vehicle interior, and at one end of the air-conditioning case (100), the side portion (11) facing the rear of the vehicle interior is provided.
a) is detachable from the air-conditioning case (100), and the filter (4) is opened through the opening (110) of the air-conditioning case (100) formed by removing the side surface (11a).
0) can be taken in and out.

Therefore, the filter (40) can be taken in and out by removing the side surface (11a) while the air-conditioning case (100) is mounted on the vehicle, and the filter (40) can be easily replaced. Becomes

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the present invention is applied to a vehicle equipped with a diesel engine, and each air conditioning unit in an air conditioning unit for air conditioning a vehicle interior space is controlled by an air conditioning control device.

First, the configuration of the air conditioning unit will be described. As shown in FIGS. 1 and 2, the air conditioning unit includes an air conditioning case 10 which forms an air passage for sending air toward the passenger compartment.
The air-conditioning case 100 includes a blower unit 1 and an air-conditioning unit 2. The blower unit 1 is offset in the vehicle width direction (offset to the left in the vehicle width direction for a right-hand drive vehicle) from a central portion of an instrument panel in a vehicle interior (not shown), and is disposed in front of a passenger seat. The blower unit 1 has a substantially rectangular parallelepiped inside / outside air switching box 11 made of resin for switching and sucking between the vehicle interior air and the vehicle exterior air at an upper portion thereof.
have.

As shown in FIG. 3, the inside / outside air switching box 11
The upper surface 11b is a curved surface having an arc-shaped cross section, and the upper surface 11b has an outside air inlet 12 and a second inside air inlet 13b.
Are open in parallel. Further, a first inside air intake port 13a is opened in the side surface portion 11c facing the front of the vehicle. Further, inside the inside / outside air switching box 11, first and second inside / outside air switching doors 14a, 14b for opening and closing these two suction ports 12, 13a, 13b are installed.

As shown in FIG. 4, the first inside / outside air switching door 14a has an arc-shaped circumferential wall 142a formed so as to connect the outer peripheral ends of two fan-shaped side plates 141a.
A rotating shaft 143a is provided axially outward at a key position of the fan 41a (the center position of the radius of curvature of the circumferential wall 142a). Further, the rotating shaft 1 is moved so as to pass through both side plates 141a.
A filter pressing portion 144a that presses a filter 40 described later is provided in parallel with 43a.

As shown in FIG. 3, the first inside / outside air switching door 14a is supported by the inside / outside air switching box 11 so as to be rotatable around the rotating shaft 143a in the vehicle longitudinal direction.
When the outside air suction port 12 is fully opened (the position indicated by the dashed line in FIG. 3), the second inside air suction port 13b is completely closed, and the outside air suction port 1 is closed.
2 is fully closed (the position indicated by the solid line in FIG. 3), the second inside air suction port 13b is fully opened. This first inside / outside air switching door 14
a is manufactured by integral molding of resin. The second inside / outside air switching door 14b is formed from a plate door.

A blower 15 is disposed below the inside / outside air switching box 11. The blower 15 includes a resin-made centrifugal multi-blade fans 15 a and 15 b, a fan drive motor 16, and a resin-made scroll casing 17. It is composed of Here, the fan of the blower 15 is composed of a fan 15a having a large outer diameter on the motor 16 side and a fan 15b having a small outer diameter on the side opposite to the motor 16, and the rotation axes of both fans 15a and 15b are substantially horizontal. It is arranged to face in the direction.

The inside of the inside / outside air switching box 11 has a first air passage 19a extending from the outside air suction port 12 and the second inside air suction port 13b to the suction port 18a of the fan 15a, and a first air passage 19a from the first inside air suction port 13a to the fan 15b. The second air passage 19b extending to the suction port 18b is partitioned by the partition plate 20a and the scroll casing 17. Further, inside the scroll casing 17, a first air passage 19 through which air blown by the fan 15a flows is formed by a partition plate 20.
a and the second air passage 1 through which the air blown by the fan 15b flows
9b. This partition plate 20 is arranged in the vertical direction as shown in FIG.
The air passage 19a and the second air passage 19b are defined in the vehicle longitudinal direction. Then, the first and second air passages 19a, 1
9b extends in parallel from the left side of the vehicle toward the right side of the vehicle.
a and 19b are blown in a substantially horizontal direction from the outlet of the scroll casing 17 in parallel from the left side to the right side of the vehicle compartment.

In FIG. 3, the inside / outside air switching box 11
A communication port (communication path) 50 that connects the outside air suction port 12 or the second inside air suction port 13b and the second air passage 19b is formed in the inner partition plate 20a. Here, the second
The inside / outside air switching door 14b fully closes the communication port 50 and fully closes the first inside air suction port 13a when the second inside air suction port 13b is fully opened (the position indicated by the solid line in FIG. 3) (FIG. 3). The communication port 50 is fully opened at the position shown by the two-dot chain line).

In the inside / outside air switching box 11, a portion 111 downstream of the outside air suction port 12 and the second inside air suction port 13b and upstream of the communication port 50 is provided with air passing therethrough. And a filter 40 for removing impurities such as dust, etc.
Is formed. Specifically, as shown in FIG. 2, in the portion 111, a side surface portion 11d facing the right side of the vehicle, a side surface portion 11c facing the front of the vehicle, and a side surface portion 11e facing the left side of the vehicle.
On the inner peripheral surface corresponding to the above, a U-shaped support portion 111a projecting substantially perpendicularly from the inner peripheral surface and continuously in a substantially horizontal direction (a direction parallel to the paper surface) of the inner peripheral surface is provided. Is formed.

The filter 40 has a resin frame (not shown) which is larger than the inner shape of the support portion 111a and smaller than the inner peripheral shape of the portion 111, and which holds the folded filter paper. . Then, as shown in FIG. 3, the filter 40 is arranged on the upstream side of the support portion 111a.
By arranging the first inside / outside air switching door 14a at a position indicated by a dashed line in FIG. 3 or at a position indicated by a solid line in FIG.
The filter 40 is sandwiched between the support portion 111a and the filter holding portion 144a of the first inside / outside air switching door 14a.

The case of the blower unit 1 can be divided into an inside / outside air switching box 11 and a scroll casing 17 in FIG. The inside / outside air switching box 11 has a side surface portion 11a facing the rear of the vehicle (left side in FIG. 5) and a top surface portion 11b which can be removed. Further, a portion indicated by AA in FIG. Can be divided in the left-right direction.

With such a case division, the door 14
a, 14b, fans 15a, 15b, a filter 40, and the like are incorporated in the case. Then, by removing the side surface portion 11a from the inside / outside air switching box 11, the opening 110 formed in the inside / outside air switching box 11
The blower 15 and the filter 40 can be taken in and out in the vehicle front-rear direction. In addition, each of the divided surfaces is detachably assembled by fastening means such as a clip (not shown).

On the other hand, in FIGS. 1 and 2, an air conditioner unit 2 having a heat exchanger for air conditioning, which will be described later, is disposed substantially at the center of an instrument panel in a vehicle compartment. In the case of the air conditioner unit 2, an evaporator (cooling heat exchanger) 21 of a refrigeration cycle is installed so as to cover the entire air passage in the air conditioner unit 2 in a slightly inclined state. The blast air from the unit 1 flows in from below.

A heater core (heating heat exchanger) 2 is provided downstream of the evaporator 21 in the air (upper compartment).
2 is installed in a substantially horizontal state. This heater core 22
Uses engine cooling water (hot water) as a heat source.
As shown in FIG. 6B, in the air conditioner unit 2, a bypass passage 22 that bypasses the heater core 22 is provided on the vehicle rear side and the vehicle front side of the heater core 22.
a and 22b are formed.

The opening ratio of the air mixing doors 24a and 24b disposed below the heater core 22 in the passenger compartment (upstream of the air) determines the ratio of the amount of hot air passing through the heater core 22 to the amount of cold air passing through the bypass passages 22a and 22b. Adjust,
Controls the temperature of air blown into the cabin. A blowout mode switching unit 23 is disposed above the heater core 22 in the vehicle interior (downstream of the air).

Then, in the air conditioner unit 2,
The internal air passages are provided with partition plates 20A, 20B, 20C.
As a result, a first air passage 19a and a second air passage 19b are defined in the vehicle front-rear direction.
b flows independently of each other. In addition, heater core 2
The partition plate 20C disposed on the leeward side of 2 has a shape bent obliquely rightward and upward at an upper portion thereof.
A communication port 20E for communicating the first air passage 19a and the second air passage 19b is provided in the obliquely bent surface 20D of 0C.

The air outlet mode switching section 23 is for switching an air outlet mode to be described later into the vehicle interior, and communicates with a center face (upper) air outlet (not shown) which blows air toward the upper body of the occupant in the vehicle interior. Center face opening 25 and side face outlet (not shown)
And a foot outlet (not shown) for blowing air toward the feet of the occupant in the passenger compartment.
And a defroster outlet (not shown) that blows air toward the inner surface of the windshield.
And a plurality of opening portions 25, 27, 28 which are connected to the plate-like door means 29a,
Switching is performed by 29b and 29c.

The center face opening 25 and the defroster opening 28 are arranged on the first air passage 19a side, while the foot opening 27 is connected to the second air passage 19b.
Located on the side. Also, the side face opening 26
Although not shown in FIG. 6B, it is arranged on the first air passage 19a side. Here, the foot door 29c is shown in FIG.
When operated to the position shown in FIG. 7B, the foot opening 27 is fully closed, the communication port 20E is fully opened, and when the foot door 29c is operated to the position shown in FIG.
The foot opening 27 is fully opened and the communication port 20E
Is fully closed.

As is well known, the side face opening 26 is always in communication with the space in the blowing mode switching section 23, and is operated by operating a blowing grill provided in the side face blowing port. It is possible to intermittently control the air blown from the air and to adjust the blow direction. Hereinafter, the configuration of the control system of the present embodiment will be described.

An operation panel (not shown) provided at the front of the vehicle compartment is provided with a temperature setting switch for indicating a desired passenger compartment temperature of the occupant. An operation signal of the temperature setting switch is transmitted to an air conditioning control device (not shown). Sent. further,
Various signals such as a vehicle interior temperature, a vehicle exterior temperature, an amount of solar radiation, and an engine water temperature are input to the air conditioning control device, and the air conditioning control device performs a predetermined calculation based on the operation signal,
The motor 1 of the blower 15 is
6. Servo motor (not shown) for rotating the first and second inside / outside air switching doors 14a and 14b, and the air mixing door 24
A control signal is output to a servo motor (not shown) for rotating the a and b, a servo motor (not shown) for simultaneously rotating the center face door 29a, the defroster door 29b, and the foot door 29c.

When the temperature of the air blown out of the vehicle air conditioner is low, the air conditioner moves to the upper body of the occupant.
Conversely, when the blowing temperature is high, the center face door 29a, so as to blow air toward the occupant's feet.
The defroster door 29b and the foot door 29c are controlled. More specifically, the face mode that blows conditioned air toward the occupant's upper body from the lower side to the higher side of the blowout temperature, the bi-level mode that blows conditioned air toward the occupant's upper body and the feet of the occupant, and about 80% of the conditioned air A foot mode in which approximately 20% is blown toward the inside of the windshield to the feet, and a foot differential mode in which the conditioned air is blown to the feet of the occupant and the inner surface of the windshield by approximately the same amount are set.

Further, in the present embodiment, a defroster mode in which conditioned air is blown toward the inner surface of the windshield is set, and this mode is operated by a passenger operating a defroster mode switch provided on the operation panel. It is performed by Next, the operation of the present embodiment in the above configuration will be described. (Face Mode) As shown in FIG. 6A, the first inside / outside air switching door 14a fully closes the outside air intake port 12 and the second inside air intake port 13b is fully opened, so that the second inside / outside air switching door 14b is opened. Thereby, the first inside air suction port 13a is fully opened and the communication port 50 is completely closed, so that the inside air is sucked into the first and second air passages 19a and 19b. At the same time, FIG.
As shown in FIG. 7, the face opening 25 is fully opened by the center face door 29a, the defroster opening 28 is completely closed by the defroster door 29b, and the foot door 29c is opened.
Thereby, the foot opening 27 is fully closed, and the communication port 20E is fully opened. Thereby, the inside air is blown out toward the upper body of the occupant.

(Bi-level mode) As shown in FIG. 7A, the first inside / outside air switching door 14a allows the outside air inlet 1 to be opened.
2, the second inside air suction port 13b is completely closed, and the first inside air suction port 13a is completely closed by the second inside / outside air switching door 14b, and the communication port 50 is fully opened, so that the first and second 2. Intake outside air into the two air passages 19a and 19b. At the same time, as shown in FIG. 7B, the face opening 25 is fully opened by the center face door 29a, the defroster opening 28 is completely closed by the defroster door 29b, and the foot opening 27 is opened by the foot door 29c. And the communication port 20E is fully closed. Thus, the outside air is blown toward the upper body and the feet of the occupant.

(Foot Mode) As shown in FIG. 8A, the first inside / outside air switching door 14a allows the outside air inlet 12
And the second inside air intake port 13b is fully closed,
The second inside / outside air switching door 14b allows the first inside air inlet 13
a, the communication port 50 is fully closed, and outside air is sucked into the first air passage 19a and inside air is sucked into the second air passage 19b. At the same time, as shown in FIG. 8B, the face opening 25 is completely closed by the center face door 29a,
The defroster opening 28 is slightly opened by the defroster door 29b, and the foot opening 2 is opened by the foot door 29c.
7, and the communication port 20E is fully closed. As a result, about 80% of the conditioned air is blown out to the feet of the occupant as inside air, and about 20% is blown out toward the inner surface of the windshield as outside air.

(Foot Differential Mode) As shown in FIG. 9A, the first inside / outside air switching door 14a allows the outside air inlet 1 to be opened.
2, the second inside air suction port 13b is fully closed, and the first inside air suction port 13a is fully opened and the communication port 50 is completely closed by the second inside / outside air switching door 14b, so that the first air passage is opened. Outside air is sucked into 19a, and inside air is sucked into the second air passage 19b. At the same time, as shown in FIG. 9B, the face opening 25 is completely closed by the center face door 29a, and the defroster opening 2 is closed by the defroster door 29b.
8 is opened about half, the foot opening 27 is fully opened by the foot door 29c, and the communication port 20E is completely closed. As a result, about 50% of the conditioned air is blown out to the feet of the occupant as inside air, and about 50% is blown out toward the inner surface of the windshield as outside air.

(Defroster Mode) As shown in FIG. 10 (a), the first inside / outside air switching door 14a fully opens the outside air intake port 12 and completely closes the second inside / outside air intake port 13b. With the switching door 14b, the first inside air inlet 13a is fully closed, and the communication port 50 is fully opened, so that outside air is sucked into the first and second air passages 19a, 19b. At the same time, as shown in FIG. 10B, the face opening 25 is fully closed by the center face door 29a, and the defroster opening 28 is fully opened by the defroster door 29b.
The foot door 29c fully closes the foot opening 27 and fully opens the communication port 20E. Thereby, the outside air is blown out toward the inner surface of the windshield.

The operation and effect in the above-mentioned blowing mode will be described below. First, the foot mode (FIG. 8A,
(B)) and foot differential mode (FIG. 9 (a),
In the case of (b)), only the outside air from the outside air suction port 12 passes through the filter 40 and is purified, and the inside air from the first inside air suction port 13a does not pass through the filter 40. For this reason, compared with the case where both the inside air and the outside air pass through the filter 40, it is possible to suppress a decrease in the airflow of the airflow in the air conditioning case 100.

The inside air containing no impurities is blown out from the foot opening 27 and the defroster opening 28
, The outside air cleaned by the filter 40 is blown out. Therefore, clean air can be blown out from the openings 27 and 28 into the vehicle interior. In the face mode (see FIGS. 6A and 6B), the inside air from the first inside air intake port 13a flows through the second air passage 19b without decreasing the air volume, and the first inside air flows. The inside air from the suction port 13a is supplied to the first air passage 1 provided with the filter 40.
It flows inside 9a. As a result, the air-conditioning case 1
Of the inside air sucked into the inside, about half of the inside air is purified and blown back into the vehicle compartment, and by repeating this, the inside air can be gradually purified.

Then, compared to the case where all of the inside air from the first and second inside air suction ports 13a passes through the filter 40, it is possible to suppress a decrease in the airflow of the airflow in the air conditioning case 100. Here, a decrease in the air volume causes a decrease in the heat exchange amount in the evaporator 21, that is, a decrease in the cooling capacity of the vehicle air conditioner. According to the present embodiment, the decrease in the air volume can be suppressed as described above. Therefore, a decrease in the cooling capacity of the vehicle air conditioner can be suppressed.

The operation and effect of the above-described filter 40 assembly structure will be described below. First, in FIG. 5, by removing the side surface portion 11 a from the inside / outside air switching box 11 portion, the opening portion 110 formed in the inside / outside air switching box 11
Since the blower 15 and the filter 40 can be taken in and out in the vehicle front-rear direction, the blower 15 and the filter 40 can be simultaneously attached and detached by removing the side surface portion 11a from the inside / outside air switching box 11.

Further, since the side surface portion 11a is a surface facing the rear of the vehicle in front of the passenger compartment, the worker can remove the side surface portion 11a while the blower unit 1 is mounted on the vehicle. Therefore, the blower 15 and the filter 40 can be attached and detached without removing the blower unit 1 from the vehicle. Further, when an air flow is generated by the blower 15, a wind pressure in a substantially vertical direction (downward in FIG. 5) is applied to the filter 40, and as a result, the frame portion of the filter 40 is pressed against the support portion 111a. Therefore, the displacement of the filter 40 in the substantially vertical direction can be prevented, so that the outside air from the outside air suction port 12 or the inside air from the first inside air suction port 13a does not pass through the filter 40,
Leakage between the filter 40 and the support portion 111a can be prevented, and inside air or outside air can be reliably purified.

The filter 40 includes a support portion 111a and a filter holding portion 144a of the first inside / outside air switching door 14a.
And the filter 40 can be easily attached and detached. Further, the function and effect of the two-layer air / inside air unit will be described.
9 (a) and (b)) and in the foot differential mode (FIG. 9)
(Refer to (a) and (b).) At the time, in the first air passage 19a, low-humidity outside air is heated by the heater core 22 to generate hot air, and is passed from the defroster outlet to the inner surface of the windshield through the defroster opening 28. I'm blowing out. Therefore, the effect of preventing fogging of the windshield can be enhanced.

On the other hand, in the second air passage 19b, the inside air is heated by the heater core 22 to produce hot air, and the foot opening 2
7, the air blows out from the foot air outlet 27a to the foot portion of the occupant. Therefore, when the feet in the passenger compartment are heated, under the condition that the ventilation load due to the intake of the outside air does not occur and the temperature of the engine coolant flowing into the heater core 22 is not sufficiently increased (for example, when the diesel engine vehicle is idling). Can also enhance the heating effect.

In this way, it is possible to achieve both the improvement of the fogging prevention effect of the vehicle window glass and the improvement of the heating effect. (Other Embodiments) In the above embodiment, when the face mode in which only the inside air is sucked is selected, the inside air may be cleaned more quickly. Specifically, a cleaning switch is provided on the operation panel, and the cleaning switch is selectively operated by an occupant.

When the cleaning switch is turned on while the face mode is selected, the first inside air inlet 13a is further fully closed in the state shown in FIG. 6A. The driving is controlled by the air conditioning control device. As a result, the inside air from the first inside air suction port 13a is not introduced, and the inside air from the second inside air suction port 13b flows through the first air passage 19a. Some,
Through the communication passage 50 on the downstream side of the filter 40,
It flows inside the second air passage 19b.

As described above, by operating the cleaning switch, the air volume of the inside air is reduced. However, all the inside air sucked into the air conditioning case 100 from the vehicle interior is cleaned and blown back into the vehicle interior. By repeating this, it is possible to rapidly purify the air in the passenger compartment. When it is determined by the occupant that the inside air has been sufficiently cleaned, the occupant turns off the cleaning switch, thereby purifying the air in the vehicle compartment at a low speed.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view of the blower unit in the apparatus of FIGS.

FIG. 4 is a perspective view of a first inside / outside air switching door.

FIG. 5 is an exploded sectional view of a blower unit.

6A is a cross-sectional view of the blower unit in the face mode taken along line AA in FIG. 2, and FIG. 6B is a cross-sectional view of the air conditioner unit in the face mode taken along line BB in FIG.

7A is a cross-sectional view of the blower unit in the bi-level mode taken along the line AA in FIG. 2, and FIG. 7B is a cross-sectional view of the air conditioner unit in the bi-level mode taken along the line BB in FIG.

8A is a sectional view of the blower unit in the foot mode taken along line AA in FIG. 2, and FIG. 8B is a sectional view of the air conditioner unit in the foot mode taken along line BB in FIG.

9A is a sectional view taken along line AA in FIG. 2 of a blower unit in a foot differential mode, and FIG. 9B is a sectional view taken along line BB in FIG. 2 of an air conditioner unit in a foot differential mode.

10A is a sectional view taken along the line AA in FIG. 2 of the blower unit in the defroster mode, and FIG. 10B is a sectional view taken along the line BB in FIG. 2 of the air conditioner unit in the defroster mode.

[Explanation of symbols]

100 ... air-conditioning case, 19a, 19b ... first and second air passages, 12 ... outside air inlet, 13a, 13b ... first and second
Inside air suction port, 15: blower, 27: foot opening, 28
... Defroster openings, 20, 20a, 20A, 20B,
20C: Partition member, 40: Filter.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuki Kato 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Goro 1 Toyota Town Toyota City, Aichi Prefecture Toyota Motor Corporation

Claims (4)

[Claims] A first opening (13a) and an outside air inlet (12) are formed at one end, and a foot opening (27) at the other end that blows air toward at least the feet of a passenger in a vehicle. And an air-conditioning case (100) formed with a defroster opening (28) for blowing air toward the inner surface of the vehicle window glass. In the air-conditioning case (100), the outside air inlet (1) is provided.
2) to the defroster opening (28).
An air passage (19a) and the first inside air intake port (13a);
Partitioning members (20, 20) that define and define a second air passage (19b) extending from the air opening to the foot opening (27).
a, 20A, 20B, 20C), and a blowing means (15) for generating an air flow from the one end to the other end in the first and second air passages (19a, 19b). In the first air passage (19a), the first air passage (19a) is provided downstream of the outside air suction port (12).
filter (4) for removing impurities in the air flowing through a)
0). 2. In the first air passage (19a),
The vehicle air conditioner according to claim 1, wherein a second inside air suction port (13b) is provided in parallel with the outside air suction port (12) upstream of the filter (40). . 3. A communication path (50) downstream of the filter (40) in the air-conditioning case (100), which communicates the second inside air suction port (13b) with the second air path (19b). When the first inside air suction port (13a) is fully opened, the communication passage (50) is completely closed, and the first inside air suction port (13a) is closed.
The air conditioner for a vehicle according to claim 2, further comprising a suction port opening / closing means (14b) for fully opening the communication passage (50) when a) is fully closed. 4. The air-conditioning case (100) is disposed in front of the vehicle interior, and a side portion (11a) facing the rear of the vehicle at the one end of the air-conditioning case (100) is provided with the air-conditioning case (100). 100), and the filter (40) can be taken in and out from an opening (110) of the air-conditioning case (100) formed by removing the side portion (11a). The vehicle air conditioner according to any one of claims 1 to 3, wherein: