JPH0542662U - Internal combustion engine air cleaner - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to reduce the ventilation resistance of the intake port of a cyclone type air cleaner installed in the intake passage of an internal combustion engine without losing the centrifugal separation function of the cyclolite. And [Structure] In a cyclone type air cleaner for an internal combustion engine, a hole 3d is formed in a dead space portion 3b of a cyclone cylinder 3 surrounded by a cyclone blade 3a for allowing a reverse flow 6 opposite to a swirling main flow 5 to flow into the cyclone cylinder 3. It is characterized by

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cyclone type air cleaner arranged in a supply path of an internal combustion engine.

[0002]

[Prior Art]

 As shown in FIGS. 4 and 5, a conventional cyclone type air cleaner for an internal combustion engine has a cyclone cylinder 3 and an element 4 each having a spiral cyclone blade 3a formed on an outer peripheral surface thereof, and an element 4 provided inside the housing 1. The cyclone blade 3a causes a swirl flow of the air sucked from the suction port 2.

[0003]

[Problems to be solved by the device]

 In addition to the main flow 5 flowing in the tangential direction, a back flow 6 flowing in the dead space 3b surrounded by the cyclone cylinder 3 and the cyclone blades 3a is generated in the air flow at the inlet of this type of cyclone air cleaner. .

Since the dead space portion 3b is a dead end, there is a problem that the air flow resistance of the suction port 2 increases due to the dead end of the backflow 6.

An object of the present invention is to provide a cyclone type air cleaner for an internal combustion engine which solves the above-mentioned conventional problems.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the gist of the present invention is that a cyclone cylinder having spiral cyclone blades formed on the outer peripheral surface thereof and an element are internally provided in a housing, and the air sucked through a suction port of a housing is In an air cleaner for an internal combustion engine that causes a swirl flow by a cyclone blade, a hole was created in the dead space of the cyclone cylinder surrounded by the cyclone blade to allow an air flow opposite to the swirl flow to flow into the cyclone cylinder. It is characterized by that.

[0007]

[Action]

 With the above configuration, the air flow opposite to the main flow swirl flows into the cyclone cylinder, and reduces the ventilation resistance of the suction port.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a housing, 2 is a suction port, 3 is a cyclone cylinder installed in the housing 1, 4 is an element, and 7 is a dust pan. A spiral cyclone blade 3a is formed on the outer peripheral surface of the cyclone cylinder 3, and a dead space portion 3b is formed by the cyclone blade 3a.

The present invention has a structure in which a wall surface 3c orthogonal to the outer peripheral surface of the cyclone cylinder 3 is formed in the dead space portion 3b, and a hole 3d communicating with the inside of the cyclone cylinder 3 is formed in the wall surface 3c. Further, a part 3e of the end face of the cyclone cylinder 3 on the side where the element 4 is in vain which does not contribute to the swirling flow of the cyclone is cut, and an inclined surface 3f is formed on a part of the end face of the cyclone cylinder 3. Good.

Since the present invention has the structure as described above, the main flow 5 of the air flow sucked from the suction port 2 causes a swirling flow along the cyclone blade 3a to flow in the tangential direction, and the main flow 5 In addition, the backflow 6 flowing toward the dead space portion 3b surrounded by the cyclone cylinder 3 and the cyclone blade 3a flows into the cyclone cylinder 3 through the hole 3d opened in the wall surface 3c.

As a result, the ventilation resistance of the intake port 2 is significantly reduced, and the cyclone efficiency in the mainstream 5 is improved.

[0012]

As described above, according to the present invention, in a cyclone type air cleaner for an internal combustion engine, an air current opposite to the swirling flow is introduced into the cyclone cylinder into the dead space of the cyclone cylinder surrounded by the cyclone blades. Since the structure has holes to allow it, the resistance due to the reverse flow that flows in the opposite direction to the main flow is eliminated, and there is the advantage of reducing the ventilation resistance at the inlet without losing the centrifugal separation function of the cyclolite.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of the present invention.

FIG. 2 is a perspective view of a cyclone cylinder according to the present invention.

FIG. 3 is a view on arrow A of FIG.

FIG. 4 is a front view of a conventional cyclone type air cleaner.

FIG. 5 is a perspective view of a main part of a conventional cyclone type air cleaner.

[Explanation of symbols]

 1 Housing 2 Suction Port 3 Cyclone Cylinder 3a Cyclone Blade 3b Dead Space 3d Hole 4 Element 5 Main Flow 6 Backflow

Claims (1)

[Scope of utility model registration request] 1. A cyclone cylinder having spiral cyclone blades formed on its outer peripheral surface and an element are provided in a housing, and an air sucked from a suction port of the housing is swirled by the cyclone blade of an internal combustion engine. In the air cleaner, an air cleaner for an internal combustion engine, wherein a hole for allowing an air flow opposite to the swirling flow to flow into the cyclone cylinder is formed in a dead space portion of the cyclone cylinder surrounded by the cyclone blade.