JP2001219729A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a blow ratio of a front side air conditioning zone against a rear side air conditioning zone without increasing the number of parts. SOLUTION: In an air conditioning duct 2, a front A/M door 4 for opening/ closing a front ventilation passage 11, and a rear A/M door 5 for opening/ closing a rear ventilation passage 12 are provided, and when the front A/M door 4 is driven to such an A/M door opening as to close a heater core 9 at the time of the face mode, it invades into the side of the rear ventilation passage 12 so that more air flows into the front ventilation passage 11 than into the rear ventilation passage 12 in conducting blow quantity adjustment to both the front ventilation passage 11 and the rear ventilation passage 12. In the B/L mode and the foot mode, blow quantity adjustment is conducted by height of door ribs 44, 45, 54, 55 provided on both end surfaces of the front A/M door 4 and the rear A/M door 5, and by means of front/rear blow quantity adjusting resistances 46, 56 provided on ventilation passage wall surfaces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can control the temperature of a front seat side air conditioning zone or a driver seat side air conditioning zone and a rear seat side air conditioning zone or a passenger seat side air conditioning zone independently of each other. The present invention relates to a vehicle air conditioner.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 7 and 8, there is provided an air conditioning unit 100 capable of independently controlling the temperature and air volume of a front seat side air conditioning zone and a rear seat side air conditioning zone. 2. Description of the Related Art A vehicle air conditioner provided with a vehicle is known. The air conditioning unit 100 includes an air conditioning duct 101 for sending air into a vehicle cabin, and a centrifugal blower 10 for generating an air flow in the air conditioning duct 101.
2. A cooling heat exchanger 103 for cooling air, a heating heat exchanger 104 for heating air, and an amount of air passing through the heating heat exchanger 104 and bypassing the heating heat exchanger 104. It has two air mix doors 105 and 106 for adjusting the amount of air to be mixed. Inside the air-conditioning duct 101, a partition wall 109 for dividing a front-side ventilation path 107 for sending conditioned air to the front-side air-conditioning zone and a rear-side ventilation path 108 for sending conditioned air to the rear-side air-conditioning zone. Is provided.

[0003] A defroster outlet 111, a front face outlet 112 and a front foot outlet 113 are opened at the downstream end of the front side ventilation path 107, and the downstream side of the rear side ventilation path 108 is downstream of the air. The rear face air outlet 114 and the rear foot air outlet 1
15 are open. And each of these outlets is 3
It is configured to be opened and closed by two outlet mode switching doors 116 to 118. In such an air conditioning unit 100, the ratio of the amount of air blown out from each outlet in each outlet mode is determined by the front-side and rear-side ventilation paths 1.
07, 108 on the wall of the passage
In general, by providing 3, adjustment is made by adjusting ventilation resistance.

[0004]

However, in the air conditioner unit 100 of the conventional vehicle air conditioner, the amount of air blown out from each outlet in all outlet modes cannot be finely adjusted, and the rear side air conditioner cannot be adjusted. When the number of outlets is large, such as the ratio, it is difficult to deal with the problem.

[0005] For example, when the outlet mode is the face (FACE) mode, the front / rear air volume ratio is set to 80:20.
When the outlet mode is the bi-level (B / L) mode, the front / rear air volume ratio is 60:40, and when the outlet mode is the foot (FOOT) mode, the front / rear air volume ratio is 50: 5.
Consider adjusting to zero.

In the air conditioning unit 100, as shown in FIG. 7, the air flow resistance adjusters 121 and 122 are adjusted so that the front / rear air flow ratio when the outlet mode is the FACE mode is 80:20. As shown in FIG. 8, when the air flow resistance adjuster 123 is adjusted so that the front / rear air flow ratio when the air outlet mode is the FOOT mode is 50:50, when the air outlet mode is the B / L mode. Since the front and rear airflow ratios are determined, it is not possible to match the target of 60:40.

In order to adjust in each of the outlet modes, Japanese Patent Application Laid-Open No. 11-245644 and Japanese Patent Application Laid-Open No.
As shown in Japanese Patent Publication No. 49 and FIG. 9, a vehicle air conditioner having an air flow rate adjusting door 110 for adjusting the front and rear air flow rate upstream of the cooling heat exchanger 103 is also proposed. However, it is necessary to add the air volume ratio adjusting door 110, and there is a problem that the cost increases due to an increase in the number of parts and the number of assembly steps.

[0008]

An object of the present invention is to provide an existing first air mix door with a function of adjusting the air volume ratio between the first air conditioning zone and the second air conditioning zone, thereby enabling the first air mixing door to be connected to the second air conditioning zone. It is an object of the present invention to adjust the air volume ratio without increasing the number of parts.

[0009]

According to the first aspect of the present invention, when the first air-mix door has a door opening degree that closes the heating heat exchanger, the first air-mix door is more than the second ventilation path. The air enters the second ventilation path so that more air flows into the ventilation path, so that the air volume of both the first ventilation path and the second ventilation path can be adjusted. As a result, the existing first air mix door can be provided with a function of adjusting the air volume ratio of the second ventilation path, and the first air conditioning zone on one side in the vehicle interior of the vehicle and the first air mixing zone on the other side in the vehicle interior of the vehicle can be provided. It becomes possible to adjust the air volume ratio between the two air conditioning zones without increasing the number of parts. Thereby, cost increase can be prevented.

According to the second aspect of the present invention, the first upper outlet and the first lower outlet are selectively opened and closed by the first outlet switching door for switching the outlet mode, and the outlet mode is switched. By selectively opening and closing the second upper outlet and the second lower outlet by the second outlet switching door, the outlet mode is opened, the first and second upper outlets are opened, and the first and second lower outlets are opened. A face (FACE) mode in which the outlet is closed, and a bi-level (B / B) in which the first and second upper outlets and the first and second lower outlets are all opened.
L) The mode can be switched to a foot (FOOT) mode in which the first and second upper outlets are closed and the first and second lower outlets are opened.

According to the third aspect of the invention, the first air volume adjusting rib for adjusting the air volume of the first air passage is provided on one end surface or both end surfaces of the first air mixing door, and the first air mixing door is provided with the first air mixing rib. By providing a second air volume adjusting rib for adjusting the air volume on one end surface or both end surfaces of the second air mix door,
The air volume ratio between the first air conditioning zone on one side in the vehicle compartment and the second air conditioning zone on the other side in the vehicle compartment can be finely adjusted. The first and second air volume adjustment ribs may be substantially triangular or substantially I-shaped, or substantially U-shaped, substantially U-shaped, substantially C-shaped or substantially V-shaped with the air upstream side opened.
It is formed in a character shape.

According to the fourth aspect of the present invention, the air conditioning duct has a first air volume adjusting resistor for adjusting the ventilation resistance of the first ventilation path and a first air volume adjusting resistor for adjusting the ventilation resistance of the second ventilation path. By providing the second air volume adjustment resistor, it is possible to finely adjust the air volume ratio between the first air conditioning zone on one side in the vehicle compartment and the second air conditioning zone on the other side in the vehicle interior.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Configuration of First Embodiment] FIGS. 1 to 5 show a first embodiment of the present invention, and FIGS. 1 to 3 show a schematic configuration of an air conditioning unit of a vehicle air conditioner. 4A and 4B are diagrams illustrating a first air mix door, and FIGS. 5A and 5B are diagrams illustrating a second air mix door.

The air conditioner for a vehicle according to the present embodiment has, for example,
Air conditioning unit 1 for air-conditioning the cabin of a vehicle such as a BOX car
Is an automatic air conditioner configured to automatically control the indoor temperature and the amount of blown air by controlling each air-conditioning function component (actuator) in an air conditioning control device (hereinafter, referred to as an air conditioner ECU).

The air-conditioning unit 1 includes a front seat (F) for air-conditioning an occupant on the front seat (front seat) side of the vehicle.
r) side air-conditioning zone (corresponding to a first air-conditioning zone of the present invention) and a rear seat (Rr) -side air-conditioning zone (corresponding to a second air-conditioning zone of the present invention) for air-conditioning occupants on the rear seat (rear seat) side of the vehicle. This is an air conditioner unit that can perform temperature control and the like independently of each other.

The air-conditioning unit 1 is disposed in front of the vehicle interior and has an air-conditioning duct 2 for sending air toward the vehicle interior.
have. On the air upstream side of the air conditioning duct 2, an inside / outside air switching door 3 and a centrifugal fan 6 are provided.

The inside / outside air switching door 3 is driven by an actuator (not shown) such as a servomotor controlled by an air conditioner ECU to change the opening degree between the inside air suction port 28 and the outside air suction port 29. It is. The centrifugal fan 6 is a centrifugal blower that is rotated and driven by an actuator such as a blower motor 7 controlled by an air conditioner ECU to generate an airflow toward the vehicle interior in the air conditioning duct 2.

An evaporator 8 is provided in a ventilation passage 10 formed in the air conditioning duct 2. The evaporator 8 is a refrigerant evaporator which is a component of a refrigeration cycle of a vehicle air conditioner. The evaporator 8 is disposed so as to block a cross section of a ventilation path formed in the air conditioning duct 2 and circulates air passing through itself. This is a cooling heat exchanger for cooling by exchanging heat with the heat.

The evaporator 8 and the ventilation passage 1
The first air passage (hereinafter, referred to as Fr air passage) 11 for blowing the conditioned air to the Fr-side air-conditioning zone is provided on the downstream side of the air 0.
And second for blowing out the conditioned air to the Rr side air conditioning zone
It is divided into ventilation passages (hereinafter referred to as Rr ventilation passages) 12, and a heater core 9 for heating a part or all of the air passing through the Fr and Rr ventilation passages 11 and 12 is provided. The air passage for Fr 11 and the air passage for Rr 12 are airtightly partitioned by an intermediate partition plate 13 on the downstream side of the evaporator 8 in the air.

The heater core 9 is disposed so as to partially penetrate the air conditioning duct 2 in the width direction or the height direction by passing through the through hole of the intermediate partition plate 13, and has a cooling water for cooling the engine therein. Flows, and the cooling water is used as a heating heat source to reheat the air.

An air introduction plate 14 for guiding air to the heater core 9 is provided on the side of the air passage 11 for Fr. A hot air passage 15 through which air flowing into the heater core 9 passes, and a heater core 9
Is formed. The bypass passage 16 through which the air bypassing is passed. Further, a warm air passage 17 through which air flowing into the heater core 9 passes and a bypass passage 18 through which air bypassing the heater core 9 passes are formed in the Rr ventilation passage 12.

At the downstream end of the air passage 11 for Fr, a defroster (DEF) outlet 20 for blowing out conditioned air toward the inner surface of the front window is directed toward the upper body (head and chest) of the occupant in the Fr side air conditioning zone. A first face (Fr-FACE) outlet (corresponding to a first upper outlet of the present invention) 21 for blowing out the conditioned air, and blowing the conditioned air toward the feet of the occupant in the Fr side air conditioning zone. Foot (Fr-FOOT) outlet (corresponding to the first lower outlet of the present invention) 22 is open.

At the downstream end of the Rr ventilation passage 12, a second face (Rr-FA) for blowing conditioned air toward the upper body (head and chest) of the occupant in the Rr side air conditioning zone.
CE) outlet (corresponding to the second upper outlet of the present invention) 2
3, and a second foot (Rr-FOOT) for blowing the conditioned air toward the feet of the occupant in the Rr side air conditioning zone
The outlet (corresponding to the second lower outlet of the present invention) 24 is open.

The air passages 11 and 12 for Fr and Rr are provided.
Inside, there are provided outlet mode switching doors 25 to 27 for independently setting the outlet mode of the Fr side air conditioning zone and the Rr side air conditioning zone. These outlet mode switching doors 25 to 27 are driven by an actuator (not shown) such as a servomotor controlled by an air conditioner ECU.

Here, the air outlet mode includes Fr, R
Face (FACE) mode in which only r-FACE outlets 21 and 23 are opened, Fr, Rr-FACE outlet 2
1, 23 and Fr, Rr-FOOT outlets 22, 24
(B / L) mode that opens both
Foot (FOOT) mode in which only the Rr-FOOT outlets 22 and 24 are opened, DEF outlet 20 and Fr, R
There are a foot differential mode (F / D) mode in which both the r-FOOT outlets 22 and 24 are opened, a defroster (DEF) mode in which only the DEF outlet 20 is opened, and the like.

On the air upstream side of the heater core 9,
First and second air mix doors (hereinafter referred to as Fr / Rr A / M) for independently controlling the temperature of the front seat side air conditioning zone and the rear seat side air conditioning zone in the vehicle cabin.
Doors) 4, 5 are provided. These Fr
And Rr A / M doors 4 and 5 are respectively driven by actuators (not shown) such as servo motors controlled by an air-conditioning ECU, and the amount of air passing through heater core 9 and the amount of air bypassing heater core 9. Is adjusted, the blowout temperature of the conditioned air blown out from the Fr and Rr ventilation passages 11 and 12 is adjusted.

The A / M door 4 for Fr is shown in FIG.
As shown in (b), the door body is made of a resin member such as PP (polypropylene) resin, and is a flat door having a pivot shaft (shaft) 41 provided at one end thereof as a pivotal position. Packings (resin members such as polyurethane foam) 42 and 43 for improving the sealing performance when the air passage 11 for Fr is opened and closed are adhered using joining means such as an adhesive.

Depending on the opening of the A / M door (for example, when the heater core 9 is closed), the A / M door 4 for Fr
Fr enters the Rr ventilation passage 12 side so that more air flows in the Fr ventilation passage 11 than in the r ventilation passage 12 and
In order to be able to adjust the air volume of both the ventilation passage 11 for Rr and the ventilation passage 12 for Rr, it is arranged so as to protrude more toward the evaporator 8 than the intermediate partition plate 13.

On one end surface of the door body of the A / M door 4 for Fr, a substantially single-letter door rib 44 for adjusting the air volume of the air passage 11 for Fr is integrally formed.
On the other end surface of the door body of the M door 4, a substantially single-letter door rib 45 for adjusting the air volume of the air passage for Fr 11 and the air passage for Rr 12 is integrally formed. These door ribs 44 and 45 are equivalent to the first air volume adjustment rib of the present invention, and furthermore, the front and rear air volume ratios in the B / L mode are set so that the front / rear air volume ratio in the FACE mode becomes the target 80:20. It has a position, a size, and a shape such that the air volume ratio becomes a target of 60:40.

The A / M door 5 for Rr is shown in FIG.
As shown in (b), the door body is made of a resin material such as PP (polypropylene) resin, and is a flat door having a pivot shaft (shaft) 51 provided at one end pivotally attached thereto. Packings (resin members such as polyurethane foam) 52 and 53 for improving the sealing performance when the ventilation passage 12 for Rr is opened and closed are attached using a joining means such as an adhesive.

On one end surface of the door body of the A / M door 5 for Rr, a substantially single-letter door rib 54 for adjusting the air volume of the ventilation passage 12 for Rr is integrally formed. On the other end surface of the door main body, a substantially single-character door rib 55 for adjusting the air volume of the Rr ventilation passage 12 is integrally formed. These door ribs 54 and 55 are equivalent to the second air volume adjustment rib of the present invention, and furthermore, the front and rear air volume ratios in the B / L mode are set so that the front / rear air volume ratio in the FACE mode is 80:20, which is the target. 60:40 target air volume ratio
It has a position, size, and shape such that

In the present embodiment, the purpose is to finely adjust the air volume ratio (front-back air volume ratio) between the front seat-side air conditioning zone and the rear seat-side air-conditioning zone in the vehicle cabin. An F for adjusting the ventilation resistance of the Fr ventilation path 11 so that the ratio becomes 60:40.
An r air volume adjustment resistor 46 and an Rr air volume adjustment resistor 56 for adjusting the ventilation resistance of the Rr air passage 12 are provided.

It should be noted that the air volume adjusting resistor 4 for Fr and Rr
Reference numerals 6 and 56 correspond to the first and second air volume adjusting resistors of the present invention, and may be omitted as long as the target front and rear air volume ratio can be obtained by the door ribs 44, 45, 54 and 55. Further, it is desirable that the door ribs 44 and 55 be at positions and heights which do not abut the passage wall surfaces of the ventilation passages 11 and 12 for Fr and Rr during MAX / HOT.

Here, in the air conditioning unit 1 of the present embodiment, as shown in FIG. 1, the heater core 9 is closed so that the front / rear air volume ratio in the FACE mode becomes the target 80:20. The A / M doors 4 and 5 for Fr and Rr are driven such that the A / M door 4 for Fr enters the ventilation passage 12 for Rr.

Next, as shown in FIG. 2, the air volume adjustment for the predetermined shape and the predetermined size for Fr and Rr so that the front / rear air volume ratio in the B / L mode becomes the target 60:40. The resistors 46 and 56 are arranged on the passage wall surfaces of the ventilation passages 11 and 12 for Fr and Rr.

Next, as shown in FIG. 3, Fr is set so that a 100% air flow flows into the heater core 9 so that the front and rear air volume ratio in the FOOT mode becomes the target of 50:50.
And Rr A / M doors 4 and 5 are driven.

[Operation of First Embodiment] Next, the operation of the air conditioning unit 1 of the vehicle air conditioner of the present embodiment will be briefly described with reference to FIGS.

A) In the FACE mode In this case, as shown in FIG. 1, the outlet mode switching door 25 is driven to a position where the DEF outlet 20 is closed, and the outlet mode switching door 26 is moved to the first FACE mode. Outlet 2
1 is driven to a position where the first FOOT outlet 22 is closed. Further, the outlet mode switching door 27 is connected to the second floor.
The ACE outlet 23 is opened and the second FOOT outlet 24 is driven to a position where it is closed, and the A / M doors 4 and 5 for Fr and Rr automatically close the heater core 9 unless instructed by the occupant (MAX. (COOL) position.

Accordingly, with the rotation of the centrifugal fan 6, the air sucked into the ventilation passage 10 of the air conditioning duct 2 from the inside air suction port 28 or the outside air suction port 29 is cooled when passing through the evaporator 8. Dehumidified. And F
The r / a door 4 closes the heater core 9 at a position where the r / m door 4 enters the rr ventilation passage 12, and the r / m door 5 closes the heater core 9. In other words, for Fr, for Rr A /
Door length of M doors 4, 5, or door ribs 44, 4
Due to the lengths of 5, 54 and 55, 80% of the air passing through the evaporator 8 flows into the air passage 11 for Fr.
20% flows into the ventilation passage 12 for Rr.

Then, 80% of the air flowing into the Fr ventilation passage 11 passes through the bypass passage 16 bypassing the heater core 9 from the first FACE outlet 21 toward the occupant's head and chest in the Fr air conditioning zone. Be blown out. Also, R
The 20% air flowing into the r ventilation passage 12 passes through the bypass passage 18 that bypasses the heater core 9 and the second FAC.
The air is blown out from the E outlet 23 toward the occupant's head and chest in the Rr air conditioning zone. As a result, the cabin of the vehicle is cooled, and the air volume ratio of the air conditioning zone for Fr and Rr in the FACE mode, that is, the air volume ratio before and after, is set to the target 8
It is adjusted to be 0:20.

B) In the B / L mode In this case, as shown in FIG. 2, the outlet mode switching door 25 is driven to a position to close the DEF outlet 20, and the outlet mode switching door 26 is opened. 1st FACE outlet 2
It is driven to an intermediate position so as to open both the first and first FOOT outlets 22. Further, the air outlet mode switching door 27 is driven to the intermediate position so as to open the second FACE air outlet 23 and the second FOOT air outlet 24, and if there is no instruction from the occupant, the A / M door 4 for Fr and Rr is automatically turned on. , 5
Is driven to an intermediate position between MAX.HOT and MAX.COOL.

Accordingly, with the rotation of the centrifugal fan 6, the air sucked into the ventilation passage 10 of the air conditioning duct 2 from the inside air suction port 28 or the outside air suction port 29 is cooled when passing through the evaporator 8. Dehumidified. Then, the height of the door ribs 44, 45, 54, 55, or Fr
60% of the air passing through the evaporator 8 by the air flow rate adjusting resistors 46 and 56 for Rr and Rr
And 40% flows into the Rr ventilation passage 12.

The 60% of the air that has flowed into the air passage 11 for Fr is mixed with the air that has passed through the heater core 9 and the air that has bypassed the heater core 9, so that the optimum air temperature is obtained. Then, the relatively low temperature air is supplied to the first FA.
The relatively high-temperature air blown out from the CE outlet 21 toward the occupant's head and chest in the Fr air conditioning zone is the first air.
The air is blown out from the FOOT outlet 22 toward the feet of the occupant in the Fr air conditioning zone.

Further, the 4 flowing into the Rr ventilation passage 12
As for the 0% air, the air passing through the heater core 9 and the air bypassing the heater core 9 are mixed to obtain an optimum air temperature. Then, the relatively low temperature air is supplied to the second FAC.
The relatively high temperature air blown out from the E outlet 23 toward the occupant's head and chest in the Rr air conditioning zone is supplied to the second F.
The air is blown from the OOT air outlet 24 toward the feet of the occupant in the Rr air conditioning zone. Thereby, the cabin of the vehicle is comfortably air-conditioned, and for the Fr in the B / L mode,
The air volume ratio of the Rr air conditioning zone, that is, the air volume ratio before and after,
The target is adjusted to be 60:40.

C) In FOOT mode In this case, as shown in FIG. 3, the outlet mode switching door 25 is driven to a position to close the DEF outlet 20, and the outlet mode switching door 26 is moved to the first FACE. Outlet 2
1 is closed and the first FOOT outlet 22 is opened. Further, the outlet mode switching door 27 is connected to the second floor.
The ACE air outlet 23 is closed and the second FOOT air outlet 24 is driven to a position to be opened. If there is no instruction from the occupant, the A / M doors 4 and 5 for Fr and Rr are automatically moved to the heater core 9 so that all air is supplied to the heater core 9. It is driven near the inflow (MAX / HOT) position.

Therefore, with the rotation of the centrifugal fan 6, the air sucked into the ventilation passage 10 of the air conditioning duct 2 from the inside air suction port 28 or the outside air suction port 29 passes through the evaporator 8 and then passes through the intermediate partition plate. 13 is the heater core 9
The heat radiation cross-sectional area is substantially equally divided into the ventilation passages 11 and 12 for Fr and Rr. In addition, door rib 4
Due to the heights of 4, 45, 54 and 55, or the flow rate adjusting resistors 46 and 56 for Fr and Rr, 50% flows into the ventilation path 11 for Fr and 50% flows into the ventilation path 12 for Rr.

Then, 50% of the air that has flowed into the air passage for Fr 11 passes through the hot air passage 15 passing through the heater core 9.
Is reheated when passing through the heater core 9 through the heater core 9 and is blown out from the first FOOT outlet 22 toward the feet of the occupant in the Fr air conditioning zone. In addition, the ventilation passage 12 for Rr
50% of the air flowing into the inside is heated again when passing through the heater core 9 through the hot air passage 17 passing through the heater core 9, and the foot portion of the occupant in the Rr air conditioning zone from the second FOOT outlet 24. It is blown out toward. As a result, the cabin of the vehicle is heated, and the air volume ratio of the Fr and Rr air conditioning zones in the FOOT mode, that is, the front / rear air volume ratio, is adjusted to be the target of 50:50.

[Features of the First Embodiment] As described above, in the present embodiment, the Fr A / A that opens and closes the Fr ventilation passage 11
An M door 4 and an Rr A / M door 5 for opening and closing the Rr ventilation passage 12 are provided.
5, at least one of the Fr A / M doors 4 is a heater core. A / M that blocks 9
When the door is open, the door length is such that the Rr ventilation passage 12 can be closed.

In the FACE mode, A for Fr and Rr
/ M doors 4 and 5 are, as shown in FIG.
It is near the OL position. In this state, A / M door 4 for Fr
Can partially close the air passage 12 for Rr (A in FIG. 1), and can output a larger air flow rate ratio to the air flow passage 11 side for Fr. It can be adjusted by the length or the length of the door ribs 44, 45, 54, 55. In the B / L mode, for Fr,
The A / M doors 4 and 5 for Rr are, as shown in FIG.
It is at the X COOL position and the MAX HOT position. In this case, the ratio of the front and rear air volumes is determined by the door ribs 44, 45, 54,
Height of 5 or air volume adjustment resistor 4 for Fr, Rr
6, 56 can be adjusted.

Furthermore, in the FOOT mode, for Fr,
The A / M doors 4 and 5 for Rr are, as shown in FIG.
It is near the X · HOT position. In this case, the front and rear air flow rate ratio can be adjusted by the height of the door ribs 44, 45, 54 and 55, or by the air flow rate adjusting resistors 46 and 56 for Fr and Rr. Thus, by laying out such that the front and rear airflow ratios in the FACE mode can be adjusted by the door lengths of the A / M doors 4 and 5 for Fr, the door ribs 4 are provided.
The air flow adjusting resistors 46, 56 for 4, 45, 54, 55 and for Fr and Rr can be used for the main purpose of adjusting the air flow ratio before and after in the B / L mode and the FOOT mode.

A / M doors 4 and 5 for Fr and Rr
The number of methods for adjusting the front / rear air volume ratio, that is, the door length and the height or length of the door ribs 44, 45, 54, 55, has increased, so that the front / rear air volume ratio can be finely adjusted in each outlet mode. . Thus, the existing Fr A / M door 4 is provided with a function of adjusting the air volume ratio of both the Fr ventilation passage 11 and the Rr ventilation passage 12, thereby increasing the number of parts without increasing the number of parts. It is possible to finely adjust the air volume ratio between the air conditioner and the Rr side air conditioning zone. Thereby, it is possible to prevent an increase in the product cost of the air conditioning unit 1 of the vehicle air conditioner.

[Second Embodiment] FIG. 6 shows a second embodiment of the present invention. FIG. 6 (a) is a view showing a first air mix door, and FIG. 6 (b) is a first air mix door. It is the figure which showed the air mix door.

As shown in FIG. 6A, the door body of the Fr A / M door 4 according to the present embodiment has an air passage 11 for Fr.
A substantially U-shaped door rib 61 for adjusting the air volume is formed integrally. Alternatively, as shown in FIG. 6B, a substantially V-shaped door rib 62 for adjusting the air volume of the air passage 11 for Fr is integrally formed on the door body of the A / M door 4 for Fr. ing.

[Other Embodiments] In this embodiment, an example in which the present invention is applied to an air conditioner for a vehicle mounted on a vehicle such as a 1-box car has been described.
It may be used for a vehicle air conditioner mounted on a large vehicle such as a bus vehicle or a railway vehicle. Further, in the present embodiment, the outlet mode switching doors 25 to 27 and the A / M doors 4 and 5 for Fr and Rr are configured to be driven by an actuator such as a servomotor. You may comprise so that it may be operated via a link mechanism by manual operation means, such as a lever.

In the present embodiment, the present invention is applied to a case in which the front / rear airflow ratio between the front seat (Fr) side air conditioning zone and the rear seat (Rr) side air conditioning zone is determined by the door length of the A / M door 4 for Fr, the door rib 44, A layout is made so as to finely adjust the target ratio for each outlet mode according to the length or height of 45, 54, 55 and the size (size) of the air volume adjustment resistors 46, 56 for Fr and Rr ( Configuration)
According to the present invention, the ratio of the front and rear air volume between the driver seat (Dr) side air conditioning zone and the passenger seat (Pa) side air conditioning zone is determined by adjusting the door length of the A / M door, the length or height of the door rib, and the air volume adjustment resistor. The layout (configuration) may be finely adjusted according to the size (size) so as to be the target ratio for each outlet mode.

In this embodiment, the Fr A / M door 4 for opening and closing the Fr ventilation passage 11 is a first air mix door,
The Rr A / M door 5 for opening and closing the Rr ventilation passage 12 is a second
Although the air mixing door is used, the Fr A / M door 4 that opens and closes the air passage 11 for Fr is used as the second air mixing door, and R
The Rr A / M door 5 that opens and closes the r ventilation passage 12 may be used as the first air mix door.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a schematic configuration of an air conditioning unit (first embodiment).

FIG. 2 is a cross-sectional view illustrating a schematic configuration of an air conditioning unit (first embodiment).

FIG. 3 is a cross-sectional view illustrating a schematic configuration of an air conditioning unit (first embodiment).

FIG. 4A is a sectional view showing an A / M door for Fr.
(B) is a front view showing the A / M door for Fr.
Embodiment).

FIG. 5A is a cross-sectional view illustrating an A / M door for Rr.
(B) is a front view showing the Rr A / M door (first embodiment)
Embodiment).

FIG. 6A is a front view showing an A / M door for Fr.
(B) is a front view showing the A / M door for Fr.
Embodiment).

FIG. 7 is a cross-sectional view showing a schematic configuration of an air conditioning unit (prior art).

FIG. 8 is a sectional view showing a schematic configuration of an air conditioning unit (prior art).

FIG. 9 is a sectional view showing a schematic configuration of an air conditioning unit (prior art).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air-conditioning unit 2 Air-conditioning duct 4 A / M door for Fr (first air mix door) 5 A / M door for Rr (second air mix door) 11 Air passage for Fr (first air passage) 12 Air passage for Rr (Second ventilation path) 44 Door rib (first air volume adjustment rib) 45 Door rib (first air volume adjustment rib) 46 Air volume adjustment resistor for Fr (first air volume adjustment resistor) 54 Door rib (second air volume adjustment rib) 55 Door rib (2nd air volume adjustment rib) Air volume adjustment resistor for 56 Rr (2nd air volume adjustment resistor)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirohide Shindo 1-1-1 Showa-cho, Kariya-shi, Aichi F-term in DENSO Corporation (Reference) 3L011 BA01 BH01 CL03

Claims (4)

[Claims] 1. A first ventilation path for sending air to a first air conditioning zone provided on one side of a vehicle interior of a vehicle and a second air conditioning zone provided on the other side of the vehicle interior of the vehicle. An air-conditioning duct having a second air passage for air flow, provided upstream of a branch between the first air passage and the second air passage, and flowing into the first air passage and the second air passage. A cooling heat exchanger for cooling air; and a cooling heat exchanger provided downstream of the branch between the first ventilation path and the second ventilation path, the first ventilation path and the second ventilation path. A heating heat exchanger for heating the flowing air; and a first adjusting a quantity of air passing through the heating heat exchanger and a quantity of air bypassing the heating heat exchanger in the first ventilation path. An air mixing door; and the heating heat exchange in the second ventilation path. An air conditioner for a vehicle, comprising: a second air mix door that adjusts an amount of air passing through a heat exchanger and an amount of air bypassing the heating heat exchanger, wherein the first air mix door includes the heating device. At the time of opening the door to close the heat exchanger, the first ventilation path enters the second ventilation path so that more air flows in the first ventilation path than in the second ventilation path, and An air conditioner for a vehicle, which performs both air volume adjustments in a second ventilation path. 2. The vehicle air conditioner according to claim 1, wherein a first upper air outlet from which air-conditioned air blows from above the first air-conditioning zone is provided at an air downstream end of the first air passage; The first air-conditioning air blows out from the lower side of the first air-conditioning zone.
A lower outlet is open, and a second upper outlet from which air-conditioned air blows from above the second air-conditioning zone at an air downstream end of the second air passage, and from a lower side of the second air-conditioning zone. The second that air-conditioning wind blows out
A lower outlet is open, the first upper outlet and the first lower outlet are selectively opened and closed by a first outlet switching door for switching an outlet mode, and the second upper outlet and the The second lower outlet is selectively opened and closed by a second outlet switching door that switches an outlet mode. 3. The air conditioner for a vehicle according to claim 1, wherein one end face or both end faces of the first air mix door are provided with:
A first air volume adjustment rib for adjusting an air volume of the first ventilation path is provided, and one end surface or both end surfaces of the second air mix door are provided,
An air conditioner for a vehicle, comprising: a second air volume adjusting rib for adjusting an air volume of the second ventilation path. 4. The air conditioner for a vehicle according to claim 1, wherein the air conditioning duct is a first air volume adjusting resistor for adjusting a ventilation resistance of the first ventilation path. An air conditioner for a vehicle, comprising: a second air flow adjusting resistor for adjusting ventilation resistance of the second air passage.