JP2004330870A - Vehicular air-conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent lowering of the quantity of air blowing out from a defroster blow-off port at the time of a defroster mode. <P>SOLUTION: An inducing door 10 inducing air from a side face duct portion 7 adjacent to a defroster duct portion 8 at the time of the defroster mode is provided. Therefore, even when a shielding plate is provided at a part corresponding to a hole portion of a rotary door 5 in the defroster duct portion 8, the quantity of the air blowing out from the defroster blow-off port can be increased. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle air conditioner.
[0002]
[Prior art]
In a conventional vehicle air conditioner, a blow-out mode is switched by a rotary door that opens and closes an air passage by rotating a circumferential door having an arc-shaped cross-section along the arc. Patent Document 1).
[0003]
[Patent Document 1]
JP 2000-296713 A
[Problems to be solved by the invention]
FIG. 2 is a perspective view of the air conditioning unit 1 of the air conditioner studied on a trial basis by the inventor, and FIG. 3 is a perspective view of a rotary mode switching door 5 used in the air conditioning unit according to the trial study.
[0005]
In FIG. 2, the center face duct portion 6 is an air passage that supplies air to a center face outlet that blows air from a substantially central portion in the vehicle width direction to the upper body of the occupant. A side face duct portion 7 for supplying air to a side face outlet that blows air into the room at a position shifted from the center face outlet to the side of the vehicle is provided.
[0006]
The air passage 8 adjacent to the center face duct 6 and the side face duct 7 on the vehicle rear side is a defroster duct that supplies air to a defroster outlet that blows air toward the window glass.
[0007]
On the other hand, as shown in FIG. 3, holes 5b and 5c forming an air passage are provided on the cylindrical door surface 5a of the semi-cylindrical rotary door 5, and the hole 5b is provided with the center face duct 6 and The hole 5c is an opening for supplying air only to the side face duct 7, and the hole 5c is an opening for supplying air only to the side face duct 7.
[0008]
At this time, since the hole 5c is shifted to the vehicle rear side with respect to the hole 5b, when the hole 5b is communicated with the center face duct 6 and the side face duct 7, as shown in FIG. In addition, the hole 5c is located at a position communicating with the defroster duct 8.
[0009]
Therefore, in the air conditioning unit 1, a shield plate 8a (hatched portion in FIG. 2) for closing the hole 5c is provided in a portion of the defroster duct portion 8 corresponding to the hole 5c so that air flows from the defroster outlet in the face mode. It is prevented from being blown out.
[0010]
However, since the shielding plate 8a for closing the hole 5c is provided in the defroster duct portion 8, the opening area on the inlet side of the defroster duct portion 8 is substantially reduced. The problem of lowering occurs newly.
[0011]
In view of the above points, the present invention firstly provides a new vehicle air conditioner different from the conventional one, and secondly, prevents the amount of air blown out from the defroster outlet in the defroster mode from decreasing. The purpose is to:
[0012]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a central outlet that blows air into a room from a substantially central portion in a vehicle width direction, at a position shifted toward a vehicle side from the central outlet. What is claimed is: 1. A vehicle air conditioner comprising: a side air outlet for blowing air into a room; and a defroster air outlet for blowing air toward a window glass, wherein an air passage for a side air outlet (7) for supplying air to the side air outlet. ), A defroster outlet air passage (8) provided adjacent to the side outlet air passage (7) and supplying air to the defroster outlet, and a side outlet air passage (7). And a wind guide means (10) for guiding at least a part of the flowing air to the air passage (8) for the defroster outlet.
[0013]
Thus, even if a shielding plate is provided in the air passage (8) for the defroster outlet, the amount of air blown out from the defroster outlet in the defroster mode can be larger than that of the prototype.
[0014]
According to the second aspect of the present invention, the air guide means is a door means for opening and closing a part of a wall portion (9) that partitions the air passage for the side air outlet (7) and the air passage for the defroster air outlet (8). It is characterized by comprising (10).
[0015]
According to the third aspect of the present invention, the door means (10) is in the form of a plate door, and directs the airflow flowing through the side air outlet air passage (7) to the defroster air outlet air passage (8). It has a guide function for turning.
[0016]
Incidentally, reference numerals in parentheses of the above-mentioned units are examples showing the correspondence with specific units described in the embodiments described later.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
In the present embodiment, a centrifugal blower according to the present invention is applied to a blower of a vehicle air conditioner (hereinafter, abbreviated as an air conditioner). FIG. 1 is a schematic diagram showing an entire configuration of a ventilation system of an air conditioning unit 1. FIG. 2 is an external perspective view of the air conditioning unit 1, and FIG. 3 is a perspective view of the rotary door 5.
[0018]
The air-conditioning unit 1 is an air-conditioning casing that forms an air flow path and houses a heater 3 and the like described later. The air-conditioning unit 1 is usually installed in a dashboard (not shown) at the front of the vehicle compartment. You.
[0019]
A blower 2 is disposed on the upstream side (upper part on the front side of the vehicle) of the air flow path formed by the air conditioning unit 1, and on the upstream side of the blower 2, the blown air blown by the blower 2 is supplied. An evaporator (not shown) for cooling is provided, and an inside air intake and an outside air intake (not shown) are provided upstream of the evaporator in the air. An inside / outside air switching door (not shown) for opening the door is provided.
[0020]
The evaporator is a low pressure side heat exchanger of a well-known vapor compression refrigerator, and cools blown air by latent heat of evaporation of the refrigerant.
[0021]
Further, a heater 3 for heating the blown air is disposed in a substantially horizontal direction on the downstream side of the blower 2 in the air conditioning unit 1, and the heater 3 blows the cooling water (hot water) of the vehicle engine as a heat source. It heats air.
[0022]
An air mixing door 4 is provided at an air upstream side of the heater 3, and the air mixing door 4 passes through the heater 3 of the air blown from the blower 2 in the direction of arrow A through the heater 3. The temperature of the blown air is adjusted by adjusting the mixing ratio of the warm air flowing in the arrow B direction in L1 and the cool air flowing in the cool air passage L2 in the arrow C direction bypassing the heater 3.
[0023]
In the present embodiment, the cold air passage L2 and the hot air passage L1 are provided so as to be vertically arranged with the heater 3 interposed therebetween.
[0024]
Most of the cool air and hot air flowing through these two passages L1 and L2 flow into the semi-cylindrical rotary door 5, are mixed, and enter the room through the passage selectively opened and closed by the rotary door 5. Be blown out.
[0025]
The center face duct portion 6 is an air passage that supplies air to a center face outlet that blows air from a substantially central portion in the vehicle width direction to the upper body of the occupant, and is provided on both sides of the center face duct portion 6 as shown in FIG. A side face duct 7 for supplying air to a side face outlet that blows air into the room at a position shifted from the center face outlet to the side of the vehicle is provided.
[0026]
The air passage 8 adjacent to the center face duct 6 and the side face duct 7 on the vehicle rear side is a defroster duct that supplies air to a defroster outlet that blows air toward the window glass.
[0027]
On the other hand, as shown in FIG. 3, holes 5b and 5c forming an air passage are provided in the semi-cylindrical cylindrical door surface 5a of the rotary door 5, and the hole 5b is The hole 5c is an opening for supplying air only to the side face duct 7, and the hole 5c is an opening for supplying air only to the side face duct 7.
[0028]
As shown in FIG. 2, a shielding plate 8a (hatched portion in FIG. 2) for closing the hole 5c is provided in a portion of the defroster duct 8 corresponding to the hole 5c. As shown in FIG. 1, an introduction door 10 that opens and closes a part of the wall 9 to communicate the side face duct 7 and the defroster duct 8 is provided on a wall 9 that separates the defroster duct 8 from the defroster duct 8. Have been.
[0029]
The introduction door 10 opens and closes mechanically or electrically in conjunction with the rotary door 5, and opens only in a differential mode in which air is blown from a defroster outlet, and closes in other blowout modes.
[0030]
The introduction door 10 is a plate door that rotates around the defroster outlet side as a fulcrum, and the introduction door 10 is closed confidentially at the outer edge of the rectangular door body 10a as shown in FIG. Packing 10b is provided.
[0031]
Incidentally, in FIG. 1, the foot duct portion 11 is an air passage that supplies air to a foot outlet that blows air downward in the vehicle cabin.
[0032]
Next, a blowing mode of the air conditioner according to the present embodiment will be described.
[0033]
1. Face mode In this mode, air is blown out only from the center face outlet and the side face outlet, and the rotary door 5 is rotated to close the foot duct portion 11 and the defroster duct portion 8 as shown in FIG. is there.
[0034]
2. Bi-level mode In this mode, air is blown out only from the center face outlet, side face outlet, and foot outlet, and the defroster duct section 8 is closed by rotating the rotary door 5 as shown in FIG. is there.
[0035]
3. Foot mode In this mode, air is blown only from the foot outlet, the side face outlet, and the defroster outlet, and the rotary door 5 is rotated to close the center face duct 6 as shown in FIG. .
[0036]
4. Differential / Foot Mode In this mode, air is blown out only from the side face outlet, defroster outlet and foot outlet, and the center door duct 6 is closed by rotating the rotary door 5 as shown in FIG. It is.
[0037]
5. Defroster mode This mode blows air only from the side face outlet and the defroster outlet, and rotates the rotary door 5 to close the center face duct portion 6 and the foot duct portion 11 as shown in FIG. The introduction door 10 is opened.
[0038]
Next, the operation and effect of the present embodiment will be described.
[0039]
In the present embodiment, in the defroster mode, air is introduced from the side face duct portion 7 adjacent to the defroster duct portion 8 and supplied to the defroster outlet. The amount of air to be blown can be increased from the prototype.
[0040]
In addition, since the introduction door 10 is in the form of a plate door that rotates with the defroster outlet side as a fulcrum, the introduction door 10 exerts a guide function of turning the airflow flowing through the side face duct 7 toward the defroster duct 8. be able to.
[0041]
(Other embodiments)
In the above-described embodiment, the blowout mode is switched by the rotary door 5, but the present invention is not limited to this, and the blowout mode is changed by a door means of a type that moves a thin film or a plate door in parallel. May be switched.
[0042]
Further, in the above-described embodiment, the introduction door 10 is configured by the plate door, but the present invention is not limited to this, and may be another type of opening and closing door.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an overall configuration of a ventilation system of an air conditioning unit according to an embodiment of the present invention.
FIG. 2 is an external perspective view of the air conditioning unit 1 according to the embodiment of the present invention.
FIG. 3 is a perspective view of the rotary door according to the embodiment of the present invention.
FIG. 4 is a perspective view of an introduction door according to the embodiment of the present invention.
FIG. 5 is an operation explanatory view of the air conditioning unit according to the embodiment of the present invention.
FIG. 6 is an operation explanatory diagram of the air conditioning unit according to the embodiment of the present invention.
FIG. 7 is an operation explanatory view of the air conditioning unit according to the embodiment of the present invention.
FIG. 8 is an operation explanatory view of the air conditioning unit according to the embodiment of the present invention.
FIG. 9 is an operation explanatory diagram of the air conditioning unit according to the embodiment of the present invention.
FIG. 10 is a diagram for explaining a problem.
[Explanation of symbols]
1 ... air conditioning unit, 5 ... rotary door, 6 ... center face duct,
7 ... side face duct part, 8 ... defroster duct part,
9 ... wall, 10 ... introduction door.

Claims (3)

A central outlet for blowing air into the room from a substantially central portion in the vehicle width direction, a side outlet for blowing air into the room at a position shifted to the side of the vehicle from the central outlet, and a defroster for blowing air toward the window glass A vehicle air conditioner having an air outlet,
An air passage (7) for a side air outlet for supplying air to the side air outlet,
A defroster outlet air passage (8) provided adjacent to the side surface outlet air passage (7) and supplying air to the defroster outlet;
Ventilation means (10) for guiding at least a part of the air flowing through the side-side outlet air passage (7) to the defroster outlet air passage (8). . The air guide means is constituted by a door means (10) for opening and closing a part of a wall (9) separating the side-side air outlet air passage (7) and the defroster air outlet air passage (8). The vehicle air conditioner according to claim 1, wherein: The door means (10) is in the form of a plate door and has a guide function of diverting an air flow flowing through the air passage (7) for the side air outlet to the air passage (8) for the defroster air outlet. The vehicle air conditioner according to claim 2, wherein:

Images