JPS6391117A - Air filter for vehicle - Google Patents

Abstract

PURPOSE:To prevent the infiltration of drain water without increasing suction resistance by bending one end of the plate constituting a louver to a channel- shaped groove and directing the member bent in the other end at 45 deg. in a direction reverse for the infiltrating direction of air and vertically arranging it at equiintervals in a chevron-shape having 45 deg. angle. CONSTITUTION:A filter frame 1 fitting a filter 2 is fitted to an aperture part for introducing cooling air which is provided to the side of a vehicle 4. Plural sheets of louvers 1a for preventing the infiltration of drain water are vertically welded and fixed to the framework of the filter frame 1. In the louver 1a, one end of the transverse direction of the plate is bent to a U-shaped groove and the other end is bent to a chevron-shaped at 45 deg. bent angle. The louvers 1a are reversely directed forward and backward for the infiltrating direction of air and also provided so that the groove parts are positioned to the inner side of the room and chevron-shaped air passages are constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a louver structure of a filter frame installed in an equipment cooling air intake of a vehicle.

[Conventional technology]

In the conventional cooling air intake device for a vehicle, a louver is provided in front of the filter to prevent rainwater from entering the vehicle body, as described in Japanese Patent Laid-Open No. 53-91214. Conventionally, this louver has been a horizontal louver C1 and a vertical louver B, as shown in FIG.

[Problem that the invention seeks to solve]

As shown in Fig. 5, the above conventional technology has the problem that the horizontal louver C has a low suction resistance, but has a large amount of rain intrusion, and the vertical louver B has a problem that the suction resistance is large, although the rain has little intrusion. there were.

An object of the present invention is to provide a filter frame that allows less rainwater to enter and has less suction resistance.

[Means for solving problems]

The above purpose is to bend one end of the plate constituting the louver into a U-shaped groove, and bend the other end at a 45° angle. Arrange vertically at equal intervals. Furthermore, the air passages between the louvers arranged in a dogleg pattern are achieved by arranging the louvers so that their opening areas are uniform.

[Effect]

Rainwater that tries to be sucked into the car body along with the intake air is heavy and tries to travel straight due to inertia. Therefore, it hits the groove of the louver and falls down. Since these grooves are provided at the front and back, rainwater that cannot be removed by the front groove can be removed by the rear groove, reducing the amount of rainwater that enters. Further, since the dimensions of the air passages are made uniform, the wind speed when passing through the louver becomes uniform, and as shown in A in FIG. 5, loss due to suction resistance can be reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. A filter frame 1 to which a filter 2 is attached is detachably attached to an opening 6 on the side of the vehicle body 4. The filter frame 1 is composed of a vertical frame 1b, a lower frame lc, an upper frame 1d, and a raindrop @1e which also serves as filter support. A plurality of louvers 1a for preventing rainwater intrusion are vertically welded and fixed to the lower frame 1c and the upper frame 1d to this frame. In the louver 1a, one lateral end of the plate is bent into a U-shaped groove, and the other end is bent into a U-shaped groove at a bending angle of 45°. The louvers 1a are disposed in opposite directions in the front and back relative to the direction of air inflow, and the grooves are placed on the indoor side, forming a dogleg-shaped air passage. In addition, they are arranged so that the dimensions a of the passages through which air flows are equal.

Further, the louver pitch P is arranged such that the louvers 1a slightly overlap each other.

The filter 2 is fixed to the filter frame through a gasket 5 at the lower part and by a latch 3 at the upper part.

When a plurality of filter devices are installed in a vehicle, they are arranged so that the louvers are symmetrical with respect to the center of the vehicle body, as shown in FIG.

According to this embodiment, since rainwater can be prevented without increasing suction resistance, indoor negative pressure can be reduced. Additionally, the capacity of the blower can be reduced.

Furthermore, since the indoor negative pressure can be reduced, it becomes easy to open and close the door provided in the passage from the driver's cab to the machine room.

〔Effect of the invention〕

According to the present invention, since it is possible to prevent rainwater from entering without increasing suction resistance, it is possible to reduce the horsepower of the blower and the indoor negative pressure.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a filter frame according to an embodiment of the present invention, Fig. 2 is a front view of the filter frame, and Fig. 3 is a cross-sectional view of the filter frame according to an embodiment of the present invention.
A line sectional view, FIG. 4 is a filter arrangement diagram of a vehicle, and FIG. 5 is a diagram of suction characteristics of various louvers. DESCRIPTION OF SYMBOLS 1... Filter frame, 1a... Louver, 4... Vehicle body, 6... Opening.

Claims (1)

[Claims] 1. A vehicle air filter comprising a filter frame attached to an opening provided on the side of a vehicle body for taking in air for cooling equipment of the vehicle, and a louver provided in the filter frame. In the device, the louver is arranged vertically in a dogleg shape, and a horse-shaped groove is provided at one end in the width direction of the louver, and the groove of the louver is configured to prevent wind from flowing in a direction in which the wind travels. As if to receive it, and,
An air filter device for a vehicle, wherein the louvers on the windward side are arranged so that the grooves are on the left side, and the louvers on the leeward side are arranged so that the grooves are on the right side. 2. A vehicle according to claim 1, wherein the filter frame is arranged so that the dogleg-shaped directions of the louvers of the filter frame are symmetrical with respect to the center in the longitudinal direction of the vehicle body. Air filter device.