JP2002274150A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular air conditioner that can distribute a total air quantity to a defroster outlet without troubling an occupant in a defroster mode. SOLUTION: A defroster door 13, when fully opened, closes a communication portion 19 of a vent door 14. When the defroster door 19 is fully opened, a total air quantity is distributed to the defroster outlet 9. In a defroster mode, a total air quantity can be distributed to the defroster outlet 9 even while a register of a side vent outlet 11 is kept unclosed, so that defrosting performance on a vehicle windshield can be sufficiently exerted in a defroster mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner having a side vent outlet.

[0002]

2. Description of the Related Art Conventionally, in a vehicle air conditioner, a center vent outlet for blowing air-conditioned air from the center of the passenger compartment toward the upper body of the occupant and a side vent outlet for blowing air-conditioned air toward a side window glass of the vehicle are both provided. There is known a vent door that opens and closes and is provided with a communication portion that constantly communicates with a side vent outlet.

In such a vehicle air conditioner, for example, even in a so-called foot mode in which a vent air outlet is closed and a foot air outlet is opened to blow conditioned air (usually warm air) from the foot air outlet, the communication is performed. Since the conditioned air is blown out from the side vent outlet through the portion, it is possible to secure the clearness of the window glass on the side of the vehicle and also to ensure the heating feeling of the occupant's upper body.

[0004]

However, in such a vehicle air conditioner, even in a defroster mode in which conditioned air is blown out from a defroster outlet to prevent fogging of a vehicle front window glass, the air conditioner is provided on the vent door. In addition, since the conditioned air is blown out from the communication part, the amount of air distribution to the defroster outlet is reduced, and there is a possibility that the windshield of the front window glass of the vehicle may not be able to sufficiently exhibit clearness.
It is also possible to distribute the entire air volume to the defroster outlet, but in that case, the occupant had to close the register of the side vent outlet.

The present invention relates to a conventional structure in which such a vent door is provided with a communication portion which is always in communication with the side vent outlet, and in the defroster mode, the entire air volume is sent to the defroster outlet without closing the register of the side vent outlet. An object of the present invention is to provide a vehicle air conditioner that can distribute air.

[0006]

According to the first aspect of the present invention,
A defroster outlet, a center vent outlet, a side vent outlet, and a foot outlet for blowing air-conditioned air whose temperature has been adjusted in a blowing path into the vehicle interior; a defroster door for opening and closing the defroster outlet; An air conditioner for a vehicle, comprising: a vent door that opens and closes both an outlet and the side vent outlet; and a foot door that opens and closes a foot outlet, wherein the vent door is provided with a communication portion that is always in communication with the side vent outlet. When the defroster door is fully opened, the defroster door closes the communicating portion of the vent door.

According to a second aspect of the present invention, in the vehicle air conditioner according to the first aspect, the degree of opening and closing of the defroster door is adjustable.

[0008]

According to the first aspect of the present invention, the defroster door is configured so as to close the communication portion of the vent door when the defroster door is fully opened. All air volume is distributed to Therefore, in the defroster mode, the entire air volume can be distributed to the defroster outlet without closing the register of the side vent outlet. As a result, the window clearness of the vehicle front window glass can be sufficiently exhibited.

According to the second aspect of the present invention, in addition to the effect of the first aspect, since the degree of opening and closing of the defroster door is adjustable, the amount of air distribution to the defroster outlet and the side vent outlet by the defroster door. Adjust the fogging of the vehicle front window glass from the defroster outlet,
Both the side window glass and the anti-fog from the side vent outlet can be compatible.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic sectional view showing a vehicle air conditioner of this embodiment, FIG. 2 is an enlarged sectional view showing a main part of the vehicle air conditioner, and FIG. 3 is used in the vehicle air conditioner of this embodiment. FIG. 4 is a schematic view showing an opening position of a side vent outlet, FIG. 5a is a view showing a flow of conditioned air in a vent mode, and FIG. 5b is a view showing a flow of conditioned air in a bi-level mode. FIG. 5C is a diagram showing the flow of the conditioned air in the foot mode, FIG. 5D is a diagram showing the flow of the conditioned air in the defroster mode, and FIGS. 6 and 7 are diagrams showing another form of the vent door.

As shown in FIG. 1, an air conditioner 1 for a vehicle includes a unit case 2, a fan 3 as a blower disposed in the unit case 2, an air filter 4, and a heat exchanger for cooling. , An air mix door 6, and a heater core 7 as a heat exchanger for heating.

The unit case 2 has a ventilation path P formed therein, an introduction port (not shown) for selectively introducing inside and outside air into the ventilation path P, and a ventilation path introduced from the introduction port. A defroster outlet 9 and a center vent outlet 1 for blowing air temperature-controlled in the path P
0 (see FIG. 4), the side vent outlet 11 and the foot outlet 12 are open.

The fan 3 is housed in the blower section 8 on the upstream side of the air flow path P, and sends the air introduced from the inlet (not shown) and temperature-controlled in the air flow path P to each of the air outlets 9, 9. This is for blowing out from 10, 11, 12 into the vehicle interior.

The air filter 4 is disposed on the upstream side of the evaporator 5, and the foreign matter accumulates on the fins (not shown) of the evaporator 5 and the fins (not shown) of the heater core 7, so that the cooling capacity and the heating capacity are reduced. This prevents dust from being blown into the vehicle interior.

The evaporator 5 is interposed in a refrigeration cycle (not shown) and circulates a low-temperature and low-pressure refrigerant therein to absorb heat, while the heater core 7 is connected to a hot water line (not shown). Heat is generated by using the engine cooling water, which is mounted and heated to a high temperature by the exhaust heat of the engine, as a heat source.

The air mixing door 6 is a temperature adjusting means, and is disposed downstream of the evaporator 5 and upstream of the heater core 7. The air mixing door 6 has a hot air path P 1 through which air cooled and dehumidified by the evaporator 5 flows to the heater core 7. The amount of air flowing to the cool air path P2 bypassing the air path 7 is adjusted so that a predetermined blowing temperature is obtained in the air mix chamber P3 provided at the junction of the warm air path P1 and the cool air path P2. The air mix door 6 of this embodiment is of a slide type and includes a door case 61 and a door body 62.

On the downstream side of the air mix chamber P3,
A defroster outlet passage 9a branched from the mix chamber P3 and communicating with the defroster outlet 9 and a center vent outlet passage 10a communicating with the center vent outlet 10
(See FIG. 4), a side vent outlet passage 11 a communicating with the side vent outlet 11, and a foot outlet passage 12 a communicating with the foot outlet 12 are provided.

As shown in FIG. 4, the defroster outlet 9 opens on the upper surface of the unit case 2 and blows out conditioned air toward the vehicle front window glass. The center vent outlet 10 opens at the center in the vehicle width direction on the upper side of the unit case 2 and is connected to a center vent duct (not shown) arranged toward the occupant's chest, so that the conditioned air is blown toward the occupant's chest. It blows out. Side vent outlet 11
Is opened on both sides in the vehicle width direction at the upper side of the unit case 2 and is connected to a side vent duct (not shown) disposed toward the vehicle side window glass, and blows out conditioned air toward the vehicle side window glass. Things. The foot outlet 12 is connected to a front foot duct and a rear foot duct (not shown) disposed toward the feet of the occupant, and blows conditioned air toward the feet of the occupant.

Each of the outlet passages 9a, 10a, 11
The swinging defroster door 13 is provided at the base end of
A butterfly type vent door 14 and a butterfly type foot door 15 are also provided. The defroster door 11 opens and closes the defroster outlet 9, the vent door 14 opens and closes both the center vent outlet 10 and the side vent outlet 11 (see FIG. 4), and the foot door 15 opens and closes the foot outlet 12. This each door 1
3, 14, and 15 are controlled to be opened and closed via control means by mode setting or temperature setting on a touch panel incorporated in the instrument panel.

As shown in FIGS. 3 and 4, the vent door 14 includes a hinge shaft 14h, a plate-like lower wing 16 attached below the hinge shaft 14h, and an upper central portion of the hinge shaft 14h. And a plate-shaped upper wing side portion 18, 18 mounted on both upper side portions of the hinge shaft 14h. The upper wing side portion 18,
The hole 18 has hole-shaped communicating portions 19, 19 which are always in communication with the side vent outlet 11. Therefore, the vent door 14 is closed, the foot door 15 is opened, and the foot outlet 1 is closed.
In the so-called foot mode that blows air conditioning air from 2,
Through the communication portions 19, 19, the side vent outlet 11,
Air-conditioned air is blown out from the upper part of the window 11 to ensure the window clearness of the vehicle side window glass. The upper and lower wings 16, 17, 18, 18 of the vent door 14 straddle the hinge shaft 14 so as to be parallel to the flow of air when the vent door 14 is open (see FIG. 2). It is formed in a substantially rectangular shape. Therefore, the maximum pressure of the conditioned air blown out from the vent outlets 10 and 11 can be kept high by reducing the pressure loss with respect to the conditioned air.

Here, the defroster outlet 9 and the vent outlets 10 and 11 are arranged adjacent to each other, and a hinge shaft 13h of the defroster door 9 is provided at a branch point between the defroster outlet passage 9a and the vent outlet passages 10a and 11a. Have been. The defroster door 13 opens and closes the defroster outlet 9 around the hinge shaft 13h, and the opening and closing extends to a position for closing and releasing the communication portion 19 of the vent door 14 in a closed state. More specifically, the defroster door 1
3, the communication portion 19 formed in the closed vent door 14 is closed.

The air conditioner 1 for a vehicle configured as described above.
The flow of the conditioned air in each of the vent mode, bi-level mode, foot mode, and defroster mode will be described with reference to FIG.

(A) Vent mode The vent mode is a mode in which conditioned air is blown from the vent outlets 10 and 11. When the vent mode is set as shown in FIG. 5A, the defroster door 13 is closed, the vent door 14 is opened, and the foot door 15 is opened by control means (not shown).
Is closed, and the conditioned air is blown out from the center outlet 10 and the side vent outlet 11.

(B) Bi-level mode The bi-level mode is a mode in which conditioned air is blown out from both the vent outlets 10, 11 and the foot outlet 12. When the bi-level mode is set as shown in FIG. 5B, the defroster door 13 is closed, the vent door 14 is opened, and the foot door 15 is opened by control means (not shown),
Air-conditioned air is blown from the vent outlets 10 and 11 and the foot outlet 12 at the same time. The vent outlet 10,
11 and the foot air outlet 12 are distributed to the vent door 1
4 and the degree of opening / closing of the foot door 15.

(C) Foot mode The foot mode is a mode in which conditioned air is blown out from the foot outlet 12. When the foot mode is set as shown in FIG. 5C, the defroster door 13 is closed, the vent door 14 is closed, and the foot door 15 is opened by control means (not shown), and the conditioned air is blown out from the foot outlet 12. In this foot mode, the conditioned air is blown out from the communication portion 19 provided in the vent door 14, so that the fogging of the vehicle side window glass is secured, and the feeling of heating of the occupant's upper body (at the time of heating operation) is secured. In the foot mode, a small amount of wind may be blown from the defroster outlet 9 in order to prevent window fogging.

(D) Defroster mode The defroster mode is a mode in which conditioned air is blown from the defroster outlet 9. As shown in FIG. 5D, when the defroster mode is set, the control means (not shown) opens the defroster door 13, closes the vent door 14, closes the foot door 15, and blows conditioned air from the defroster outlet 9. At this time, in the conventional vehicle air conditioner, there is a possibility that the conditioned air is also blown out from the communication portion 19 and the defroster outlet 9 may not sufficiently exhibit the anti-fogging property. However, in the vehicle air conditioner 1 of this embodiment, Is
When the defroster door 13 is fully opened,
Can block the communication portion 19 and distribute the entire air volume to the defroster outlet 9. Therefore, when the windshield of the vehicle is extremely fogged and it is desired to clear the fog immediately, the air-conditioning air is not distributed to the side vent outlet 11 as in the related art, and the cloud of the windshield of the vehicle at the maximum blowing performance is obtained. Can be removed.

The degree of opening and closing of the defroster door 13 is adjustable, and the amount of air distribution to the defroster outlet 9 and the side vent outlet 11 is adjusted by the degree of opening and closing of the defroster door 13. The fogging prevention of the vehicle front window glass and the fogging prevention of the vehicle side window glass from the side vent outlet 11 can be achieved at the same time.

According to the vehicle air conditioner 1 of this embodiment, when the defroster door 13 fully opens the defroster outlet 9, the communication portion 19 of the vent door 14 is closed.
The entire air volume can be distributed to the defroster outlet 9 without closing the register of the side vent outlet 11, and the defrosting property of the vehicle front window glass in the defroster mode can be sufficiently exhibited.

Since the degree of opening and closing of the defroster door 13 is adjustable, the amount of air distribution to the defroster outlet 9 and the side vent outlet 11 is adjusted by the degree of opening and closing of the defroster door 13, and the amount of air from the defroster outlet 9 is adjusted. Both anti-fog of the vehicle front window glass and anti-fog of the vehicle side window glass from the side vent outlet 11 can be compatible.

According to the vehicle air conditioner 1 of the present embodiment, the communication portion 19 of the vent door 14 is connected to the defroster door 13.
The defroster door 13 capable of closing the communication portion 19 is not required to be large because it is provided at a position very close to the hinge shaft 13h. For this reason, the operation force of the defroster door 13 does not become excessive. Rather, the small size of the defroster door 13 enables the defroster door 13 with good operability to be embodied.

In the present invention, the shape of the communicating portion 19 formed in the vent door 14 is not limited to the shape shown in FIG. 4, and for example, the side vent outlet 11 is opened and closed as shown in FIG. FIG. 7 shows a case where the upper wing side portions 18 and 18 are formed to be small and communication portions 19 and 19 are provided.
As shown in the figure, other shapes may be used, such as a configuration in which upper wing side portions 18, 18 for opening and closing the side vent outlet 11 are cut out to provide communication portions 19, 19, and the like.

In this embodiment, the so-called "air mix type" vehicle air conditioner 1 using the air mix door 6 as the temperature adjusting means has been described. However, the flow rate of hot water supplied to the heater core 7 is adjusted. A so-called "full reheat system" air conditioner for a vehicle may be used in which the temperature of the air blown into the vehicle interior is adjusted by a flow control valve (not shown).

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing one embodiment of a vehicle air conditioner of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of the vehicle air conditioner of FIG.

FIG. 3 is a perspective view showing a shape of a vent door used in the vehicle air conditioner of FIG. 1;

FIG. 4 is a schematic diagram showing an opening position of a side vent outlet.

5A and 5B are diagrams illustrating the flow of the conditioned air in each mode, FIG. 5A is a diagram illustrating the flow of the conditioned air in the vent mode, FIG. 5B is a diagram illustrating the flow of the conditioned air in the bi-level mode, and FIG. FIG. 5D is a diagram showing the flow of the conditioned air in the foot mode, and FIG. 5D is a diagram showing the flow of the conditioned air in the defroster mode.

FIG. 6 is a view showing another form of the vent door.

FIG. 7 is a view showing another form of the vent door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 9 Defroster outlet 10 Center vent outlet 11 Side vent outlet 12 Foot outlet 13 Defroster door 14 Vent door 15 Foot door 19 Communication part

Continued on the front page (72) Inventor Hidenobu Arakawa 5-24-15 Minamidai, Nakano-ku, Tokyo

Claims (2)

[Claims] 1. A defroster air outlet (9), a center vent air outlet (10), a side vent air outlet (11), and a foot air outlet for blowing air-conditioned air whose temperature is controlled in an air blowing path (P) into a vehicle interior. (12) and a defroster door (13) for opening and closing the defroster outlet (9).
And a vent door (1) that opens and closes both the center vent outlet (10) and the side vent outlet (11).
4) and a foot door (14) for opening and closing the foot outlet
Wherein the vent door (14) is provided with a communication portion (19) which is always in communication with the side vent outlet (11). In the air conditioner (1) for a vehicle, the defroster door (13) is fully opened. The defroster door (13) is connected to the communicating portion (1) of the vent door (14).
An air conditioner for a vehicle (1), wherein the air conditioner (9) is closed. 2. The vehicle air conditioner (1) according to claim 1, wherein the degree of opening and closing of the defroster door (13) is adjustable.