JPS589006B2 - automotive ventilation system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ventilation system for a motor vehicle, and more particularly to a ventilation system for a motor vehicle that is capable of exhausting dirty air inside the vehicle while it is running.

If a passenger car continues to drive for a long time with the windows closed, the air inside the car becomes polluted due to the breathing and smoking of the occupants, making the passenger feel uncomfortable.

In particular, modern passenger cars equipped with air conditioners often drive for long periods of time with the interior closed, making ventilation of the interior even more important.

In such cases, ventilation has traditionally been achieved by opening a portion of the window of the vehicle while it is running and allowing fresh air from outside the vehicle to enter the interior of the vehicle.

According to this method, even if the effect of diluting the dirty air inside the car with fresh air could be expected, it could not be expected at all until the dirty air inside the car was actively exhausted to the outside.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an exhaust system for an automobile that can exhaust dirty air from inside the automobile to the outside by actively utilizing the air flow generated outside the body of the automobile while it is running. be.

According to the present invention, the above object is to provide an air introduction pipe that takes in air from an inlet opening toward the upstream side of the air flow and causes the air to flow toward the downstream side; An axial fan type driving blade having a plurality of blades arranged around the outer periphery of a rotating sleeve built in parallel; one end is coaxially built into the rotating sleeve and extends upstream. an axial fan type exhaust vane having a plurality of blades disposed on a rotating shaft to produce a suction action; a bearing rotatably supporting the rotating shaft of the exhaust vane; disposed within the air introduction pipe; This is achieved by providing an exhaust pipe with one end surrounding the exhaust vane and the other end opening into the interior of the force-phase driven vehicle as an exhaust port, and a shutter attached to the exhaust port and having a variable opening area.

Embodiments of the automotive ventilation system according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates an air introduction tube, and this air introduction tube 1 is a cylindrical member 1a having a U-shaped cross section with both ends open.
and a side plate 1b.

When this introduction tube 1 is placed in an air flow, air is taken into the interior through the inlet, and the air flow is allowed to pass through the introduction passage 3 and be discharged from the outlet 4.

In the introduction passage 3 near the outlet 4, an exhaust device 7 is rotatably incorporated, which includes a driving vane 5 and an exhaust vane 6 coaxially coupled to each other, which are rotatably driven by the air flow.

As shown in FIGS. 1 and 2, the drive blade 5 includes a plurality of blades 9, 9,
..., 9 are arranged at equal intervals in the circumferential direction.

The blades 9, 9, . . . , 9 are formed so that their longitudinal center lines are inclined with respect to the axis of the sleeve, and their cross sections are curved rearward.

Further, inside the sleeve 8, the blades 9, 9, .
The above-mentioned blade 10 incorporates an axial fan type exhaust vane 6 formed by disposing a plurality of blades 10, 10, . . . , 10 at equal intervals with opposite inclinations to the sleeve axis , 10, . . . , 10 have their bases fixed to the outer periphery of a rotating shaft 11, and this rotating shaft 11 is rotatably supported within the air introduction pipe 1 via a bearing as described later.

A spacer 12 is disposed between the drive blade 5 and the side plate 1b, as shown in FIG. 1, and the inner surface of this spacer 12 is an inner cylindrical surface 12a. This and the inner wall surface of the air introduction pipe 1 facing the same cooperate to form a casing that surrounds the outside of the drive blade 5.

This spacer 12 is not necessarily necessary, and becomes unnecessary when the air introduction pipe 1 is constructed of a pipe member having a circular cross section and a diameter slightly larger than the outer diameter of the drive blade 5.

On the other hand, an exhaust pipe 15 is incorporated in the introduction passage 3 on the upstream side of the exhaust device 7, and one end of this exhaust pipe 15 extends inside the introduction passage 3 toward the inlet 2, and the side plate 1
b, opens at the side surface of the side plate 1b, and opens the exhaust port 16.
It becomes.

The exhaust port 16 is opened at an appropriate position inside the vehicle, and the opening area of the exhaust port 16 can be adjusted by a shutter 17.

It is desirable that the shirt cover 17 be a sliding door that can be easily opened and closed from the inside of the passenger car.

The exhaust pipe 15 has a passage cross section that gradually becomes smaller toward the downstream side, is fitted on the outside of the exhaust vane 6, and its end terminates near the drive vane 5.

A bearing member 18 is installed in the exhaust pipe 15, and a bearing member 19 that pairs with the bearing member 18 is installed on the end face of the spacer 12. It is rotatably supported by two bearing members 18,19.

3A, B, C, and D show cross-sectional views of the automotive ventilation system shown in FIG. 1 at positions A-A, B-B, C-C, and D-D, respectively.

As is clear from this figure, the air flow path formed in the air introduction pipe 1 changes as shown in the figure F, F, F, F, while the exhaust path changes as shown in SA, SB, S.
It has changed to C.

The above-mentioned automotive ventilation system is installed at two locations on the sides of the body 20 of a passenger car as shown in FIG. The flow acts on the drive vane 5 and causes it to rotate.

When the drive vane 5 rotates, the exhaust vane 6 directly connected thereto also rotates, thereby creating a suction effect within the exhaust pipe 15.

As a result, the dirty air inside the passenger car is sucked into the exhaust pipe 15 through the exhaust port 16, merges with the air discharged from the drive vane 5, and is discharged to the outside from the outlet 4.

Note that the driving blade 5 in the above embodiment is coaxially coupled to the outside of the exhaust blade 6 on the rotating shaft 11, and
The shaft end of the drive blade 5 is rotatably supported by bearings 18 and 19, but according to another embodiment, two locations on the outer periphery of both ends of the drive blade 5 can be rotatably connected directly to the air introduction pipe 1 via a ring or the like. It is also possible to support the exhaust vane 6 in a cantilever manner by the drive vane 5 .

In this case, the rotating shaft 11 and bearings 18, 19 can be omitted.

As is clear from the above description, according to the present invention, the air flow generated outside the vehicle while the vehicle is running is used to rotate the drive vane within the air introduction pipe, and the drive vane further rotates the exhaust vane within the exhaust pipe. Since the exhaust pipe is driven to produce a suction effect within the exhaust pipe, the dirty air inside the car can be actively exhausted to the outside of the car, and the air inside the car can be kept clean.

In addition, in the present invention, when the drive blade is rotated by the traveling wind, only the rear end of the rotating shaft is pressed against the bearing, so the friction loss due to the bearing is reduced and the energy of the traveling wind is effectively utilized. Moreover, since the air inside the vehicle is exhausted without being deflected through the axial exhaust vanes, exhaust resistance can be reduced and exhaust performance can be improved.

Furthermore, the amount of exhaust can be adjusted by providing a shutter at the exhaust port inside the vehicle.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of an automobile ventilation system according to the present invention, Fig. 2 is a side sectional view showing a turbine exhaust system consisting of a drive vane and an exhaust vane, and Figs. 3A, B, C,
D is a cross-sectional view at each position A, B, C, and D in FIG. 1, and FIG. 4 is a perspective view showing a state in which the automobile ventilation system according to the present invention is attached to the body of an automobile. 1...Air introduction pipe, 2...Inlet, 3...Introduction passage, 4...
...Exit, 5...Drive vane, 6...Exhaust vane, 7...Exhaust device, 8...Sleeve, 9, 10...Blade, 15...
...exhaust pipe, 16...exhaust port, 17...shaft.

Claims (1)

[Claims] 1. An air introduction pipe that takes in air from an inlet that opens toward the upstream side of the air flow and causes the air to flow toward the downstream side; and the outer periphery of a rotating sleeve that is incorporated into this air introduction pipe so that the axis of rotation is parallel to the air introduction pipe. an axial fan type drive blade having a plurality of blades disposed on the rotating shaft; one end of which is coaxially incorporated in the rotating sleeve and a plurality of blades disposed on a rotating shaft extending toward the upstream side; an axial fan-type exhaust vane that causes a flexing suction action; a bearing that rotatably supports the rotating shaft of the exhaust vane; one end surrounding the exhaust vane and the other end disposed within the air introduction pipe; A ventilation system for a vehicle, comprising: an exhaust pipe that opens into the interior of the vehicle and serves as an exhaust port; and a shutter that is attached to the exhaust port and has a variable opening area.