JP3027924U - Air filter with electric dust collection function - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the dust collecting function of an air filter for an internal combustion engine, at the same time to ionize combustion air to improve combustion efficiency and reduce exhaust emission. [Constitution] An ionization electrode is provided on the air filter element, and a dust collecting portion and a dust collecting electrode are provided on the air filter casing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air filter with an electric dust collecting function that improves the dust collecting ability of an air filter used in an internal combustion engine and at the same time ionizes intake air.

[0002]

[Prior art]

 Conventionally, an air filter used in an internal combustion engine has a single purpose of separating dust from intake air. Most of them purify the combustion air by filtering the intake air using filter paper.

Further, for the purpose of ionizing the intake air and improving combustion, a proposal is provided in which a discharge electrode is provided in the intake path to ionize the intake air by corona discharge (Japanese Patent Laid-Open No. 5-44584), and weak magnetic materials such as ceramics. Various proposals have been made such as a proposal for activating intake air with an element (Japanese Patent Laid-Open No. 5-202819).

[0004]

[Problems to be solved by the device]

 The conventional air filter described above performs the function of separating dust from the intake air only by the filtering action of the filter paper, so the filter paper must be frequently cleaned or periodically replaced with a new one. It was difficult to efficiently separate and remove fine particles of dust, oil mist, and smoke in exhaust gas that pass through the filter paper. Therefore, it has not been possible to supply sufficiently clean air to the internal combustion engine.

Further, it is known that the combustion efficiency of the internal combustion engine is improved by ionizing the combustion air, but the conventional air filter ionizes the combustion air only by separating and removing dust from the intake air. The function to do is not attached.

Further, in the above-described ionization device using corona discharge, it is disadvantageous that the device is complicated, such that the device cannot be retrofitted and the intake manifold body needs to be processed. In addition, the activation of air by the weak magnetic element has a problem that it is difficult to reliably activate a large amount of air required for combustion.

The present invention has been made in view of the above problems of the conventional technology, and an object thereof is to obtain minute impurities that could not be separated and collected from the intake air in the past. It also aims to provide an air filter with an electric dust collecting function that efficiently separates air and at the same time improves the combustion efficiency by ionizing the combustion air and reduces exhaust emissions.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the air filter with an electric dust collecting function in the present invention removes dust by giving a charge to dust and other impurities in the intake air by a corona discharge current and at the same time ionizing the intake air to an internal combustion engine. Configured to supply.

At present, various electric dust collectors such as the Cottrell type are widely spread in society and used in many places, from home air cleaners to industrial electric dust collectors. And, except for some purposes such as collection of particulate materials, most of them are only for collecting dust. However, the present invention focuses on its ionization ability.

That is, it is possible to improve the combustion efficiency by generating ionic wind by electrostatic discharge and ionizing the combustion air with the corona ions.

[0011]

[Action]

 Due to the electric dust collection function, Coulomb force separates and removes microdust that could not be separated and collected by conventional filtration air filters. Further, the combustion air is sufficiently ionized to improve the combustion efficiency and reduce the exhaust emission.

[0012]

FIG. 1 is a sectional view of an embodiment of an air filter with an electric dust collecting function according to the present invention. Ionization electrode 3 that ionizes the intake air and charges the dust and other impurities contained in the air by charging, dust collecting electrode 5 for collecting the charged dust and other impurities, and dust collecting part 4 And an air filter casing 1, and an insulating material 2 located between the dust collecting electrode 5 and the air filter casing 1.

Next, the operation of the above configuration will be described. The combustion air that has reached the inside of the air filter casing 1 through the suction pipe is ionized by the ion wind flowing from the ionization electrode 3 toward the dust collection electrode 5.

The ionization electrode 3 is a gold-plated tungsten and is connected to the negative electrode of a high voltage DC power supply. The dust collecting electrode 5 has a flat plate formed in a ring shape and is connected to the anode of the high-voltage DC power supply.

Since dust and other impurities contained in the ionized air are charged, they are attracted to the dust collecting electrode 5 by the Coulomb force. A non-woven fabric is used for the dust collecting part 4, and it is arranged between the ionization electrode 3 and the dust collecting electrode 5. The charged dust and other impurities adhere to the dust collecting part 4 while being sucked by the dust collecting electrode 5.

The high-voltage DC power supply is connected to a storage battery or a generator.

[0017]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

Efficiently separates and removes ultrafine particles of dust, oil mist, smoke components in exhaust gas, etc., which were difficult to separate and remove with an air filter having a conventional filtering function. Therefore, sufficiently clean combustion air can be supplied to the internal combustion engine.

Further, since the combustion air can be supplied to the internal combustion engine in an ionized state, the fuel consumption rate of the internal combustion engine can be improved and the exhaust emission can be reduced.

Since the amount of dust adhering to the air filter (air element) is reduced, maintenance such as extension of the cleaning interval is facilitated.

Further, the exhaust resistance can be reduced by reducing incomplete combustion due to increase in intake resistance due to clogging of the air filter (air element) and shortage of combustion air.

[Brief description of drawings]

FIG. 1 is a sectional view of an air filter with an electric dust collecting function.

[Explanation of symbols]

 1 Air filter casing 2 Insulation material 3 Ionizing electrode 4 Dust collecting part 5 Dust collecting electrode

Claims (1)

[Scope of utility model registration request] 1. An air filter with an electric dust collecting function for improving the dust collecting ability and ionizing intake air by adding an electric dust collecting function to an air filter used for an internal combustion engine.