JPH0327851Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the duct structure of an automobile air conditioner for introducing outside air into a vehicle interior.

(Prior art) The outside air intake port of the duct for introducing outside air into the vehicle interior is generally designed as shown in Japanese Utility Model Application Laid-open No. 114911/1983, in order to efficiently achieve natural intake by utilizing the dynamic pressure generated by the running wind. It is opened towards the front from the front of the vehicle. In order to use space efficiently, some vehicles are designed to open the outside air intake port toward the front of the vehicle body around a headlamp provided on the front surface of the vehicle body.

Incidentally, the duct for introducing outside air is provided with a fan for forced suction, so that in addition to simply forced suction of outside air, cooling and heating can be performed while performing the forced suction.

However, in the past, the outside air intake was used for both natural intake and forced intake, meaning that dynamic pressure was applied during forced intake as well, so when driving in cold regions, When forced intake is performed, a large amount of snow or rainwater enters the duct through the outside air intake, causing problems such as freezing of the air conditioner, such as a fan, and causing malfunction.

For this reason, the duct for introducing outside air is divided into a duct for natural intake and a duct for forced intake equipped with an air conditioner such as a fan. 58−128106
As shown in the above publication, a structure in which the bumper is opened on the back side has been considered.

(Problems to be Solved by the Invention) However, the above structure has both a duct for natural suction and a duct for forced suction, and the structure itself has to be enlarged.

The present invention was made in view of the above circumstances, and its purpose is to improve the duct structure of an automobile air conditioner, which is equipped with a natural intake duct and a forced intake duct in which an air conditioner is installed. The aim is to suppress the

(Means and effects for solving the problem) In order to achieve this purpose, the present invention uses a forced intake system that is equipped with a natural intake duct and an air conditioner for introducing outside air into the passenger compartment. and a duct for natural intake, the natural intake duct has an outside air intake port,
The natural suction duct is opened toward the front from the front of the vehicle around a headlamp provided on the front of the vehicle, and has a connection port on the side wall of the natural suction duct, and the forced suction duct is connected to the front of the vehicle through the connection port. It consists of an upstream duct and a downstream duct that are connected to each other, and the upstream duct extends forward from the outside air intake of the natural suction duct along the inner wall surface of the natural suction duct, and The outside air intake port, which is the tip end of the side duct, is opened on the back side of a bumper provided on the front of the vehicle body.

This is a duct structure of an automobile air conditioner characterized by the following.

With the above configuration, in order to perform natural intake, an annular outside air intake is formed between the natural intake duct and the headlamp, and the annular outside air intake is connected to the upstream side in a part of the circumferential direction. The duct will be used for installation. Therefore, the installation space specially provided for the upstream duct can be considerably reduced, and the enlargement of the present structure can be significantly suppressed.

(Embodiments) Examples of the present invention will be described below with reference to the attached drawings.

In FIG. 1, a front grill 2 and a pair of left and right headlamps 3 are disposed on the front surface of a front panel 1 constituting the front surface of an automobile (truck in this embodiment), and below both 2 and 3. , a bumper (front bumper) 4 are provided.

The headlamp 3 is housed within a bezel 5, as also shown in FIG. That is, the bezel 5 is shaped like a box made of synthetic resin and is open at the front, and is fitted into the mounting opening 1a formed in the front panel 1, and the bezel 5 is fitted into the mounting opening 1a formed in the front panel 1.
However, it is opened towards the front,
The headlamp 3 is housed within such a bezel 5 with a predetermined space around the periphery.
Further, of the pair of left and right bezels 5, a connection port 5b is opened in the rear wall of the bezel 5 on the left side, that is, in the order of the passenger seat, and the upstream end of the duct 6 is connected to the connection port 5b. The duct 6 cooperates with the bezel 5 to constitute a natural intake duct, and its downstream end is opened into the vehicle interior, and an opening/closing damper 7 is disposed in the middle thereof.

As shown in FIG. 4, a connection port 5c is opened in one side wall of the bezel 5 to which the duct 6 is connected, and an upstream duct 8 and a downstream duct 9 are connected through the connection port 5c. ing. Both ducts 8 and 9 cooperate with each other to constitute a forced suction duct, and the upstream duct 8 runs along the inner wall surface of the bezel 5, as shown in FIG. From the front opening 5a, an outside air intake port 8a, which is bent backward and downward from the front opening 5a, is connected to the rear side of the bumper 4 (the bumper 5
and the front panel 1). Further, the downstream end of the downstream duct 9 is opened into the vehicle interior, and a fan 11 driven by a motor 10 is disposed in the middle of the duct 9 as an air conditioning device necessary for at least forced suction. Although not shown, if necessary, the fan 1
An air conditioner for cooling or heating is provided on the downstream side of the air conditioner 1.

A connection port 9a is opened at the upstream end of the downstream duct 9, that is, the end on the connection port 5c side, and a duct 12 for internal air circulation extending from the vehicle interior is connected to the connection port 9a. There is. Then, by the switching damper 13 disposed in the upstream end of the downstream duct 9, the connection port 5c is closed, and the connection port 9a is closed, so that the outside air is introduced, and the connection port 5c is closed.
Switching is performed between the internal air circulation state in which the connection port 9a is closed and the connection port 9a is opened.

Next, the operation of the above configuration will be explained.

First, when introducing outside air by natural inhalation,
The opening/closing damper 7 may be opened. In this state, outside air is introduced into the bezel 5 from around the headlamp 3, that is, from the front opening 5a of the bezel 5, and then passes through the duct 6 into the vehicle. introduced indoors. During this natural intake, the outside air is introduced from the front opening 5a of the bezel 5 as a running wind, that is, using the dynamic pressure during running, so that the intake efficiency is excellent.

On the other hand, when outside air is forcibly introduced, the fan 11 may be driven by the motor 10 while the connection port 5c is opened by the switching damper 13. In this state, due to the suction action of the fan 11, the outside air is
As shown by broken line arrows in FIGS. 2 to 4, the outside air is drawn into the interior of the upstream duct 8 through the outside air intake port 8a, and then introduced into the vehicle interior via the downstream duct 9. During this forced intake, the outside air is sucked in from the back side of the bumper 4, that is, it is sucked in without any dynamic pressure being applied during driving, which prevents large amounts of snow, rainwater, etc. from being sucked in. Therefore, malfunction of the fan 11 and the like is prevented.

Note that if the fan 11 is operated with the connection port 9a opened by the switching damper 13, the internal air circulation state is established.

(Effects of the invention) As is clear from the above, the invention has the following effects:
Natural intake of outside air can be performed efficiently, and a large amount of snow or rainwater can be prevented from being sucked in when outside air is forced to be taken in, thereby preventing malfunctions of fans and the like.

In addition, since the installation space specially provided for the upstream side duct of the forced intake duct can be significantly reduced, it is possible to significantly reduce the installation space for the upstream side duct of the forced intake duct. Even if the device has a duct structure, it is possible to significantly suppress the increase in size of the structure.

[Brief explanation of drawings]

Figure 1 is a front view of an automobile to which the present invention is applied, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a cross-sectional view taken along the - line in Figure 1.
The figure is a perspective view showing the arrangement relationship between a bezel for accommodating a headlamp and a forced suction duct, and FIG. 4 is a sectional view taken along the line -- in FIG. 1: Front panel, 3: Head lamp, 4:
Bumper, 5: Bezel, 5a: Front opening (outside air intake), 5c: Connection port, 6: Duct (for natural intake),
8, 9: Duct (for forced intake), 8a: Outside air intake, 11: Fan.

Claims (1)

[Scope of Claim for Utility Model Registration] Comprising two ducts: a natural intake duct for introducing outside air into the vehicle interior, and a forced intake duct equipped with an air conditioner, the natural intake duct comprising: The outside air intake
The natural suction duct has a connection port in a side wall that is opened toward the front of the vehicle body around a headlamp provided on the front surface of the vehicle body, and the forced suction duct is connected to the forced suction duct through the connection port. The upstream duct consists of an upstream duct and a downstream duct that are connected by a The outside air intake port, which is the tip end of the side duct, is opened on the back side of a bumper provided on the front side of the vehicle body. A duct structure for an automotive air conditioner characterized by: