KR102311867B1 - Dust collecting filter for capturing dust generated in break apparatus of transportation means - Google Patents

Abstract

The present invention is a filter for collecting fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine, and includes a first collector that surrounds a part of the outer surface of the rotor, and a part of the outer peripheral surface of the rotor an upper collector and a second collector surrounding a portion of an inner surface of the rotor, wherein the first collector and the second collector include ribs arranged in a serpentine type, and an empty space between the ribs and the ribs It relates to a collection filter, characterized in that it includes a channel forming the. According to the present invention, it is possible to efficiently collect fine dust generated by friction between the rotor and the brake pad in a brake device of a transportation engine, and prevent air pollution by reducing fine dust generated during braking of a transportation engine. .

Description

Collection filter for capturing fine dust generated from a brake device of a transport institution {Dust collecting filter for capturing dust generated in break apparatus of transportation means}

The present invention relates to a collection filter, and more particularly, to a filter for collecting fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine.

The number of particles (fine dust) emitted by the non-exhaust pipe (non-exhaust system) is increasing due to the increase in transport systems.

As regulations on fine dust in the exhaust system have been strengthened, fine dust generated from non-exhaust pipes (non-exhaust systems) of transport engines has recently become an issue. Sources of fine dust generated from non-exhaust systems include brake wear and tire wear. The friction between the brake pad and the rotor generates fine dust and substances harmful to the human body. Fine dust generated by the wear of brake pads has a small particle size and can have a direct impact on the human body and the environment. In particular, in urban areas, the amount of particulates emitted from brake devices due to an increase in traffic volume is increasing.

Transportation institutions such as automobiles are not equipped with a device to recover fine dust generated by wear of brake pads and tires, so there is a problem that the air environment is polluted. The development of a filter capable of collecting dust is required.

A new concept of filter material and technology is required for a collection filter to collect fine dust generated from non-exhaust systems of transportation such as brake pads and tires due to the specificity of the environment (temperature, moisture, vibration, etc.).

In particular, the collection filter for collecting fine dust generated from the brake device must be installed around the brake pad, where the surface temperature is expected to rise by more than several hundred degrees (up to 700 ° C) due to friction, so it is required to secure heat resistance, It is necessary to develop a filter material with excellent durability against contamination of the filter by dust and vibrations caused by vehicle driving.

NOx and SOx can be removed by catalyst or self-ignition, but fine dust generated from non-exhaust systems is difficult to oxidize. Differentiated technologies must be applied.

Republic of Korea Patent Publication No. 10-2017-0085015

An object of the present invention is to provide a filter for collecting fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine.

The present invention is a filter for collecting fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine, and includes a first collector that surrounds a part of the outer surface of the rotor, and a part of the outer peripheral surface of the rotor an upper collector and a second collector surrounding a portion of an inner surface of the rotor, wherein the first collector and the second collector include ribs arranged in a serpentine type, and an empty space between the ribs and the ribs It provides a collection filter, characterized in that it includes a channel forming the.

Preferably, the collection filter is provided in a U-shape in appearance to partially accommodate the rotor into the U-shaped interior.

The first collector may be provided to face an outer surface of the rotor, the second collector may be provided to face an inner surface of the rotor, and the second collector may be the second collector with respect to the disk-shaped rotor. The first collector may be positioned opposite the first collector, and the first collector and the second collector may be disposed to face each other with respect to the rotor.

The ribs may have a curved shape.

A curvature of the ribs forming a curved shape may be the same as a disk curvature of the rotor having a disk shape.

The distance between the ribs and the ribs may be the same.

The thickness of the ribs may be the same.

The ribs of the first collector and the second collector may be formed of a porous ceramic material.

The ceramic material is alumina (Al ₂ O ₃ ), cordierite (2MgO·2Al ₂ O ₃ ·5SiO ₂ ), whisker, mullite (mullite, 3Al ₂ O ₃ ·2SiO ₂ ) and silicon carbide (SiC). It may be at least one ceramic material selected from the group consisting of.

Preferably, the porosity of the ribs of the first collector and the second collector is 40 to 80%.

The pores distributed in the ribs of the first collector and the second collector preferably have an average size of 0.5 to 15 μm.

The ribs of the first collector and the second collector are coated with a hydrophobic coating film and may exhibit hydrophobicity. The hydrophobic coating film is preferably provided with a thickness of 100nm to 2㎛.

A needle-shaped whisker may be coated or adhered to surfaces of the ribs of the first collector and the second collector.

The collection filter covers and protects the first collector and includes a first collector cover for suppressing the fine dust flowing into the channel from leaking to the outside, and the second collector to protect the fine dust introduced into the channel to the outside. It may further include a second collector cover for suppressing leakage.

An upper collector cover for protecting the upper collector may be further provided on the upper collector.

Holes may be formed in the upper collector cover to allow clean air filtered by the upper collector to escape to the outside.

The upper collector may be formed of a ceramic fiber filter in which ceramic fibers are entangled in a network form. The porosity of the upper collector is preferably 40 to 80%. The pores distributed in the upper collector preferably have an average size of 50 to 400 nm.

The ribs may include a first rib, a second rib, a third rib, a fourth rib, a fifth rib, and a sixth rib, and the first rib and the second rib may be connected at one end, and the second The rib and the third rib may be connected at the other end, the third rib and the fourth rib may be connected at one end, the fourth rib and the fifth rib may be connected at the other end, and the fifth rib and The sixth rib may be connected at one end.

A rib block is provided at an end of the rib, the rib block is a medium connecting the rib and the rib, and fine dust generated by friction between the rotor and the brake pad is introduced through the inlet of the channel, and the first collector and in the second collector, in the Y-axis direction perpendicular to the X-axis, which is the rotational axis of the rotor, an empty space between the inlet and the rib block may be a region forming the channel, and perpendicular to the X-axis and the Y-axis. In the Z-axis direction, a rib and an empty space between the ribs may be a region forming the channel.

It is preferable that fine dust generated by friction between the rotor and the brake pad is introduced through the inlet of the channel, and the inlet is directed toward the brake pad.

The collection filter may be replaceable.

According to the present invention, it is possible to efficiently collect fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine. Air pollution can be prevented by reducing fine dust generated during braking of transport institutions.

1 is a view showing an example of a collection filter for collecting fine dust generated in a brake device of a transportation engine.
2 is a diagram illustrating an example of a first collector.
3 is a view showing an example of a state in which the collection filter is coupled to the brake device.
4 is a diagram illustrating another example of a collection filter.
5 is a view showing an example of a brake device.
6 is a view showing another example in which a collection filter is coupled to the brake device of FIG. 5 .

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the following examples are provided so that those of ordinary skill in the art can fully understand the present invention, and may be modified in various other forms, and the scope of the present invention is limited to the examples described below it's not going to be

When it is said that any one component "includes" another component in the detailed description or claims of the invention, it is not construed as being limited to only the component, unless otherwise stated, and other components are further added. It should be understood as being able to include

Hereinafter, the term "transportation institution" is used in the sense that includes not only automobiles, trucks, buses, and railroad vehicles, but also two-wheeled vehicles such as motorcycles.

A collection filter according to a preferred embodiment of the present invention is a filter for collecting fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine, and includes a first collector surrounding a part of an outer surface of the rotor; an upper collector enclosing a portion of an outer circumferential surface of the rotor and a second collector enclosing a portion of an inner surface of the rotor, wherein the first collector and the second collector include ribs arranged in a serpentine type; , including a rib and a channel forming an empty space between the ribs.

Preferably, the collection filter is provided in a U-shape in appearance to partially accommodate the rotor into the U-shaped interior.

The first collector may be provided to face an outer surface of the rotor, the second collector may be provided to face an inner surface of the rotor, and the second collector may be the second collector with respect to the disk-shaped rotor. The first collector may be positioned opposite the first collector, and the first collector and the second collector may be disposed to face each other with respect to the rotor.

The ribs may have a curved shape.

A curvature of the ribs forming a curved shape may be the same as a disk curvature of the rotor having a disk shape.

The distance between the ribs and the ribs may be the same.

The thickness of the ribs may be the same.

The ribs of the first collector and the second collector may be formed of a porous ceramic material.

The ceramic material is alumina (Al ₂ O ₃ ), cordierite (2MgO·2Al ₂ O ₃ ·5SiO ₂ ), whisker (whisker), mullite (mullite, 3Al ₂ O ₃ ·2SiO ₂ ) and silicon carbide ( SiC) may be at least one ceramic material selected from the group consisting of.

Preferably, the porosity of the ribs of the first collector and the second collector is 40 to 80%.

The pores distributed in the ribs of the first collector and the second collector preferably have an average size of 0.5 to 15 μm.

The ribs of the first collector and the second collector are coated with a hydrophobic coating film and may exhibit hydrophobicity. The hydrophobic coating film is preferably provided with a thickness of 100nm to 2㎛.

A needle-shaped whisker may be coated or adhered to surfaces of the ribs of the first collector and the second collector.

The collection filter covers and protects the first collector and includes a first collector cover for suppressing the fine dust flowing into the channel from leaking to the outside, and the second collector to protect the fine dust introduced into the channel to the outside. It may further include a second collector cover for suppressing leakage.

An upper collector cover for protecting the upper collector may be further provided on the upper collector.

Holes may be formed in the upper collector cover to allow clean air filtered by the upper collector to escape to the outside.

The upper collector may be formed of a ceramic fiber filter in which ceramic fibers are entangled in a network form. The porosity of the upper collector is preferably 40 to 80%. The pores distributed in the upper collector preferably have an average size of 50 to 400 nm.

The ribs may include a first rib, a second rib, a third rib, a fourth rib, a fifth rib, and a sixth rib, and the first rib and the second rib may be connected at one end, and the second The rib and the third rib may be connected at the other end, the third rib and the fourth rib may be connected at one end, the fourth rib and the fifth rib may be connected at the other end, and the fifth rib and The sixth rib may be connected at one end.

In the first collector and the second collector, a rib block is provided at an end of the rib, and the rib block is a medium connecting the rib and the rib, and fine dust generated by friction between the rotor and the brake pad is transferred to the channel In the first collector and the second collector, in the Y-axis direction perpendicular to the X-axis, which is the rotation axis of the rotor, the empty space between the inlet and the rib block may be an area forming the channel. and an empty space between the ribs and the ribs in the Z-axis direction perpendicular to the X-axis and the Y-axis may be a region forming the channel.

It is preferable that fine dust generated by friction between the rotor and the brake pad is introduced through the inlet of the channel, and the inlet is directed toward the brake pad.

The collection filter may be replaceable.

Hereinafter, a collection filter for collecting fine dust generated in a brake device of a transport engine will be described in more detail.

1 is a view showing an example of a collection filter for collecting fine dust generated in a brake device of a transportation engine. 2 is a diagram illustrating an example of a first collector. 3 is a view showing an example of a state in which the collection filter is coupled to the brake device. 4 is a diagram illustrating another example of a collection filter. 5 is a view showing an example of a brake device. 6 is a view showing another example in which a collection filter is coupled to the brake device of FIG. 5 .

1 to 6 , the brake device is a device that performs braking by friction generated between a brake pad 20 and a rotor 10 . The brake device includes a disk-shaped rotor 10 connected to an axle to rotate, and an axial direction X (perpendicular to the surface forming the disk shape) in the rotor 10 in order to brake the rotation of the rotor 10 . direction), and the brake pad 20 to bring the brake pad 20 into close contact with the rotor 10 or to remove the brake pad 20 in contact with the rotor 10 from the rotor 10 . A brake caliper 30 for controlling the rotation of the rotor 10 by being spaced apart is included.

The rotor 10 is a disk-shaped device that is connected to an axle and rotates. The rotor 10 may include a first disk surface 10a perpendicular to the X-axis and a second disk surface 10b parallel to the first disk surface. The first disk surface 10a and the second disk surface 10b may be coupled to each other by a rim or the like.

The brake pad 20 is a device for braking the rotation of the rotor 10 by applying pressure to the rotor 10 in the axial direction (X direction) (direction perpendicular to the surface forming the disk shape). . The brake pad 20 may include a first pad for applying pressure to the first disk surface 10a and a second pad for applying pressure to the second disk surface 10b. The brake pad 20 is mounted on the brake caliper to move along the axial direction (X direction).

The brake caliper 30 adheres the brake pad 20 to the rotor 10 , or separates the brake pad 20 in contact with the rotor 10 from the rotor 10 . A device for controlling rotation. The brake pad 20 is accommodated in the brake caliper 30, the first pad facing the rotor 10 facing the first disk surface 10a, and the rotor (facing the second disk surface 10b) ( 10) and may include a second pad provided to face. The brake caliper 30 may be provided in a U-shape in overall appearance to surround a portion of the rotor 10 .

Due to friction between the brake pad 20 and the rotor 10 , fine dust harmful to the human body (fine dust such as carbon dioxide, nitrogen dioxide, and carbon monoxide) is generated. In particular, fine dust generated by wear of the brake pad 20 has a small particle size and may have a direct effect on the human body and the environment. In particular, in urban areas, the amount of particulates emitted from brake devices due to an increase in traffic volume is increasing.

Since the collection filter for collecting fine dust generated from the brake device of a transportation institution should be installed around the brake pad 20, which is expected to increase the surface temperature by more than several hundred degrees due to friction, it is required to secure heat resistance, It is necessary to develop a filter material with excellent durability against contamination of the filter due to vehicle driving and vibration generation due to vehicle driving.

Although NOx and SOx can be removed by catalyst or self-ignition, fine dust generated from the brake system is difficult to oxidize, so it is possible to develop a material that can effectively collect fine dust, develop parts to which it is applied, and remove the collected dust. Differentiated technologies must be applied.

The fine dust collecting filter of the present invention is a filter that collects fine dust (dust) generated by friction between the brake pad 20 and the rotor 10 . The collection filter sucks and collects fine dust (dust) generated when the brake pad 20 or the rotor 10 is worn while the rotor 10 and the brake pad 20 come into contact with each other during braking of the vehicle. The collection filter according to a preferred embodiment of the present invention may be provided to be replaceable.

In order to suck fine dust generated from friction between the brake pad 20 and the rotor 10 , the shape and installation position of the collection filter may change depending on the positions of the brake pad 20 and the brake caliper 30 .

Preferably, the collection filter is installed behind the brake pad 20 (behind the brake pad when viewed in the rotational direction of the rotor) from the position of the brake pad 20 when viewed from the forward running direction of the transport engine. Installing the collection filter behind the position of the brake pad 20 means that fine dust (dust) generated by the friction between the brake pad 20 and the rotor 10 when the transport engine is traveling forward is blown away by wind, etc. This is because it is advantageous to flow into the collection filter and collects more fine dust. When the transport engine travels forward, most of the fine dust (dust) generated by friction between the brake pad 20 and the rotor 10 is moved rearward by wind, etc., and is rearward than the position of the brake pad 20 It can be collected by flowing into the collection filter installed in the The collection filter may be provided to collect fine dust without power. Naturally, fine dust (dust) can be efficiently sucked into the collection filter by the direction of the air flowing while the vehicle is running (air flow).

The collecting filter may be provided in a form that surrounds a part of the rotor 10 . The collection filter may be provided in a U-shape in overall appearance so as to surround a portion of the rotor 10 . The collecting filter is configured to partially accommodate the rotor 10 into a U-shaped interior.

The collection filter includes a first collector 110 surrounding a portion of an outer surface (first disk surface 10a) of the rotor 10, and an upper collector 130 surrounding a portion of an outer peripheral surface of the rotor 10. , a second collector 120 surrounding a portion of the inner surface (the second disk surface 10b) of the rotor 10 may be included. The first collector 110 is provided to face the outer surface (the first disk surface 10a) of the rotor 10 . The second collector 120 is provided to face the inner surface (the second disk surface 10b) of the rotor 10 . The second collector 120 is installed to be positioned opposite the first collector 110 with respect to the disk-shaped rotor 10 . The first collector 110 and the second collector 120 are disposed to face each other with respect to the rotor 10 . The first collector 110 and the second collector 120 are disposed to be spaced apart from the rotor 10 .

The upper collector 130 is provided to surround a part of the outer circumferential surface of the rotor 10 . The upper collector 130 may be connected to the first collector 110 and the second collector 120 . The upper collector 130 is also installed to be spaced apart from the rotor 10 .

The first collector 110 and the second collector 120 include ribs 140 arranged in a serpentine type, and a channel 150 forming an empty space between the ribs.

The ribs 140 are arranged staggering each other in a zigzag as shown in FIGS. 1, 2, 4, 6, etc. rather than being arranged in a straight line. The ribs 140 are arranged in a meandering form in the form of a serpentine type.

The ribs 140 may be formed in a straight shape from one end to the other end, and more preferably in a curved shape from one end to the other end. More preferably, the ribs 140 are arranged in a curved shape identical to the disk curvature of the rotor 10 having a disk shape. The curvature of the ribs forming the curved shape is preferably the same as the disk curvature of the rotor 10 having the disk shape. The distance between the ribs and the ribs is preferably the same, but is not limited thereto.

Fine dust (dust) generated by friction between the brake pad 20 and the rotor 10 is introduced along the channel 150 through the inlet 155 . The channel 150 is an empty space between the ribs and the ribs, and provides a path through which fine dust is introduced. The channel 150 is opened through an inlet 155 through which fine dust is introduced and is blocked by a rib and a rib block connecting the ribs. In the Y-axis direction (a direction parallel to the outer or inner surface of the rotor and perpendicular to the X-axis), the empty space between the inlet 155 and the rib block 145 forms a channel, and in the Z-axis direction (X-axis) and in a direction perpendicular to the Y-axis) is an area in which the rib and the empty space between the ribs form a channel. The inlet 155 faces the brake pad 20 .

4 and 6 show an example of the first collector 110 including six ribs (a first rib, a second rib, a third rib, a fourth rib, a fifth rib, and a sixth rib).

4 and 6, the first rib (140a) and the second rib (140b) are connected at one end, the second rib (140b) and the third rib (140c) are connected at the other end, The third rib 140c and the fourth rib 140d are connected at one end, the fourth rib 140d and the fifth rib 140e are connected at the other end, and the fifth rib 140e and the sixth rib (140e) are connected to each other. 140f) is connected at one end. The separation distance between the first rib 140a and the second rib 140b, the separation distance between the second rib 140b and the third rib 140c, and the third rib 140c and the fourth rib 140d The spacing distance of , the spacing distance between the fourth rib 140d and the fifth rib 140e, and the spacing distance between the fifth rib 140e and the sixth rib 140f are the same. The thickness of the ribs 140 may be the same (constant).

A rib block 145 is provided at an end of the rib 140 , and the rib block 145 is a medium connecting the rib and the rib. For example, one end of the first rib 140a and one end of the second rib 140b are connected by a first rib block 145a, and the other end of the second rib 140b and the other end of the third rib 140c are connected. is connected by a second rib block 145b, one end of the third rib 140c and one end of the fourth rib 140d are connected by a third rib block 145c, and a fourth rib 140d ) and the other end of the fifth rib 140e are connected by a fourth rib block 145d, and one end of the fifth rib 140e and one end of the sixth rib 140f have a fifth rib block 145e. ) are connected by The first rib block 145a, the third rib block 145c, and the fifth rib block 145e are located at the left end of the first collector 110, while the second rib block 145b and the fourth rib block 145e The block 145d is configured to be positioned at the right end of the first collector 110 . The rib 140 and the rib block 145 are preferably made of the same material.

The empty space between the first rib 140a and the second rib 140b constitutes the first channel 150a, and the empty space between the third rib 140c and the fourth rib 140d is the second channel ( 150b), and an empty space between the fifth rib 140e and the sixth rib 140f constitutes the third channel 150c.

The ribs 140 are made of a porous ceramic material. Since the first collector 110 and the second collector 120 are installed around the rotor 10, the surface temperature of which is expected to rise by several hundred degrees or more due to friction between the rotor 10 and the brake pad 20, it is required to secure heat resistance. and durability against contamination by rainwater or dust and vibrations caused by vehicle driving is required. In consideration of these points, the ribs of the first collector 110 and the second collector 120 are alumina (Al ₂ O ₃ ), cordierite (2MgO·2Al ₂ O ₃ ·5SiO ₂ ), and a whisker ( whisker), mullite (3Al ₂ O ₃ ·2SiO ₂ ), silicon carbide (SiC), or a mixture thereof is preferably made of a ceramic material having heat resistance. The ribs 140 of the first collector 110 and the second collector 120 are preferably made of a porous ceramic material having a porosity of 40 to 80%, more preferably 50 to 65%. If the porosity is too low, the fine dust filtering efficiency may be low, and if the porosity is too high, the durability may be deteriorated by easily cracking or breaking due to vibration and shock. The pores distributed in the ribs 140 of the first collector 110 and the second collector 120 are 15 μm or less (eg, 0.5-15 μm), more preferably 0.5-10 μm, most preferably preferably has an average size of about 0.5 to 8 μm.

The ribs 140 of the first collector 110 and the second collector 120 are preferably made of a material having a hydrophobic property in order to prevent water droplets from forming on the surface. In order to have hydrophobicity, the first collector 110 and the second collector 120 may be manufactured by coating the porous ceramic material with a hydrophobic material. When the material is made of a hydrophilic material, a large amount of water droplets may form on the surfaces of the ribs 140 of the first collector 110 and the second collector 120 , and thus the filtering effect may be reduced. The hydrophobic coating film is preferably provided with a thickness of about 100 nm to 2 μm.

A needle-shaped whisker may be coated or adhered to the surfaces of the ribs of the first collector 110 and the second collector 120 . The needle-shaped whiskers coated or adhered to the surfaces or pores of the first and second collectors suppress the formation of water droplets on the rib surfaces of the first and second collectors 110 and 112, thereby preventing the first and second collectors from forming. It can serve to make the collector hydrophobic.

The upper collector 130 may be made of a porous ceramic material having heat resistance, preferably a material including ceramic fibers. More specifically, the upper collector may be formed of a ceramic fiber filter in which ceramic fibers are entangled in a network form. The upper collector 130 is disposed on the outer peripheral surface of the rotor 10 and also serves to prevent foreign substances such as dust from entering the rotor 10 . Preferably, the porosity of the upper collector 130 is about 40 to 80%. The pores distributed in the upper collector 130 preferably have an average size of 50 to 400 nm. The ceramic fiber is alumina (Al ₂ O ₃ ), cordierite (cordierite, 2MgO·2Al ₂ O ₃ ·5SiO ₂ ), whisker, mullite (mullite, 3Al ₂ O ₃ ·2SiO ₂ ), silicon carbide (SiC) or It is preferably made of a ceramic material having heat resistance, such as a mixture thereof.

The upper collector 130 may be manufactured by a method such as electrospinning ceramic fibers. For example, by electrospinning a solution containing ceramic fibers under the conditions of a voltage difference of 1 to 100 kV, a spinning flow rate of 0.1 to 10 ml/hr, a spinning distance of 2 to 50 cm, and a nozzle hole size of 0.01 to 2.0 mm, the ceramic fibers are formed. Ceramic fiber filters intertwined in the form of a network can be manufactured.

Collector covers 160 and 170 for protecting the first collector 110 and the second collector 120 and suppressing the fine dust introduced into the channel from flowing out to the outside may be further provided. The collector covers 160 and 170 may be made of a material such as a synthetic resin having good workability and light weight, for example, a thermosetting synthetic resin, but a material having good durability and resistance to impact such as a metal or a metal alloy may be used. The collector cover covers and protects the first collector 110, and covers and protects the first collector cover 160 and the second collector 120 to prevent fine dust flowing into the channel from leaking to the outside, and to the channel. It may include a second collector cover 170 for suppressing the inflow of fine dust from leaking to the outside. The first collector cover 160 is provided on the opposite side of the rotor 10 with respect to the first collector 110 , and the second collector cover 170 is provided on the opposite side of the rotor 10 with respect to the second collector 120 . is provided in The collector covers 160 and 170 may serve to prevent foreign substances such as dust from entering the rotor 10 .

4 and 6 show a first collector 110 and a first collector cover 160 including six ribs (a first rib, a second rib, a third rib, a fourth rib, a fifth rib, and a sixth rib). ) is shown as an example.

4 and 6 , the first collector cover 160 completely covers side surfaces of the ribs (first rib, second rib, third rib, fourth rib, fifth rib, and sixth rib). It is composed of, and is configured to be in close contact with the side surfaces of the ribs.

An upper collector cover 180 for protecting the upper collector 130 may be further provided. The upper collector cover 180 may be made of a material such as a synthetic resin having good workability and light weight, for example, a thermosetting synthetic resin, but a material having good durability and resistance to impact such as a metal or a metal alloy may be used. The upper collector cover 180 may be provided on the upper collector 130 . The upper collector cover 180 may be disposed on the outer circumferential surface of the rotor 10 to prevent foreign substances such as dust from entering the rotor 10 . Holes may be formed in the upper collector cover 180 to allow clean air filtered by the upper collector 130 to escape to the outside. Fine dust generated by friction between the rotor and the brake pad is collected by the upper collector 130, and the clean air that has passed through the upper collector 130 is discharged through the holes of the upper collector cover 180. It can suppress the increase of the surrounding temperature.

The aforementioned collection filter can be replaced after use for a certain period of time or reused after removing fine dust.

Hereinafter, a method of manufacturing the first collector and the second collector will be described in detail.

To prepare the first and second collectors, a starting material including a ceramic raw material, a binder, and a pore former is prepared.

The ceramic raw material is alumina (Al ₂ O ₃ ) powder, cordierite (2MgO·2Al ₂ O ₃ ·5SiO ₂ ) powder, whisker powder, mullite (mullite, 3Al ₂ O ₃ ·2SiO ₂ ) powder, silicon carbide (SiC) powder or a mixed powder thereof is preferable. In consideration of the porosity, pore size, strength, etc. of the first and second collectors to be manufactured, the ceramic raw material is a powder having an average particle diameter of 100 nm to 40 μm, more preferably 300 nm to 30 μm. it is preferable

The binder may be polyvinyl alcohol (PVA), polyethylene glycol (PEG), or the like. The binder is preferably contained in an amount of 1 to 20 parts by weight based on 100 parts by weight of the ceramic raw material in the starting material.

As the pore-forming agent, an organic material such as cellulose, polymethylmethacrylate (PMMA), or a mixture thereof may be used. The pore former is preferably contained in an amount of 5 to 50 parts by weight based on 100 parts by weight of the ceramic raw material in the starting material.

In order for the manufactured first and second collectors to have high porosity and high strength characteristics, the starting material may further include kaolinite powder. As the kaolinite powder, it is preferable to use a powder having an average particle diameter of about 100 nm to 40 μm, more preferably 300 nm to 30 μm. The kaolinite powder is preferably contained in the starting material in an amount of 0.5 to 45 parts by weight, more preferably 5 to 30 parts by weight, based on 100 parts by weight of the ceramic raw material.

In order for the first and second collectors to have high porosity and high strength characteristics, the starting material may further include glass frit. The glass frit is preferably contained in an amount of 0.5 to 45 parts by weight, more preferably about 5 to 30 parts by weight, based on 100 parts by weight of the ceramic raw material in the starting material.

In order to increase the porosity of the first collector and the second collector, the starting material may further include a pore-forming agent. The pore-forming agent may include a carbon-based material such as rice straw, rice bran, graphite, or a mixture thereof. The pore-forming agent is preferably contained in an amount of 0.5 to 45 parts by weight, more preferably 5 to 30 parts by weight, based on 100 parts by weight of the ceramic raw material in the starting material.

The starting materials are mixed. The mixing may use a process such as ball milling. Hereinafter, the mixing process by ball milling will be described in detail. The starting material is charged into a ball milling machine together with a solvent and mixed. The starting materials are mechanically mixed by rotating at a constant speed using a ball mill. The ball used for the ball milling may be a ball made of a ceramic material such as alumina or zirconia, and the balls may be all of the same size, or balls having two or more sizes may be used together. Adjust the size of the ball, the milling time, and the rotation speed per minute of the ball mill. For example, the size of the ball can be set in the range of about 1 mm to 50 mm, and the rotation speed of the ball mill can be set in the range of about 50 to 2000 rpm. Ball milling is preferably performed for 10 minutes to 48 hours. The starting materials are uniformly mixed by ball milling.

The mixed starting material is molded into a desired shape and dried. The molding is performed using pressure molding, extrusion molding, etc. in consideration of the complex shape of the first collector and the second collector (serpentine type shape of a serpentine or zigzag arrangement shown in FIGS. 2 and 4, etc.). can By the above molding, the first collector and the second collector have a serpentine type shape (a shape arranged in a serpentine or zigzag pattern). The drying is preferably performed in an oven at 60-150° C. for 1-48 hours.

The molded result is charged into a furnace such as an electric furnace and a firing process is performed. The calcination process is preferably performed for about 10 minutes to 48 hours at a calcination temperature of about 1100 to 1600°C. It is preferable to increase the temperature up to the firing temperature at a temperature increase rate of 1 to 50 ° C./min. If the temperature increase rate is too slow, it takes a long time to decrease productivity. Therefore, it is preferable to raise the temperature at a temperature increase rate in the above range. The firing is preferably performed in an oxidizing atmosphere (eg, oxygen (O ₂ ) or air (air) atmosphere). After performing the firing process, the furnace temperature is lowered to unload the fired product. The furnace cooling may be performed in a natural state by shutting off the furnace power, or may be cooled by arbitrarily setting a temperature drop rate (eg, 10° C./min). It is desirable to keep the pressure inside the furnace constant even while the furnace temperature is lowered. In the sintering process, the organic component is burned away when the temperature reaches 300 to 400 ° C. Since the sintering temperature is made at a temperature higher than the temperature at which the organic component burns, all the organic components are removed when the sintering process is completed, and pores are formed. The space where I am located and the space between the powder and the powder form pores, and the fired body that has undergone the firing process becomes porous.

The coating film 30 may be formed on the surface for hydrophobicity, etc. with respect to the first and second collectors manufactured as described above. The hydrophobic coating film may be formed by coating a paste, suspension, or colloid on the outer surface of the sintered body and heat-treating it at a temperature of about 400 to 1000°C. It is preferable to form the hydrophobic coating film to a thickness of about 100 nm to 2 μm. As an example for forming a hydrophobic coating film, a case of coating the _{boehmite-TiO 2 sol may be exemplified.}

The boehmite-TiO ₂ sol can be prepared as follows.

Beam to boehmite Chemistry (boehmite) was added to a solvent such as distilled water, and hydrolysis (hydrolysis) at a temperature of about 60 ℃, here by addition of an acid (acid), such as nitric acid (HNO ₃₎ solution to (peptization) to the beam Forms an emetic sol.

TiO ₂ precursor is added to a solvent such as distilled water, hydrolyzed at a temperature of about 50 ° C. _{, and an acid such as nitric acid (HNO 3} ) is added thereto for peptization to obtain TiO ₂ sol. to form The TiO ₂ precursor may be titanium isopropoxide (TTIP) or the like.

To yield to the beam by mixing a boehmite sol and a TiO ₂ sol to the boehmite sol -TiO _2.

With respect to the first collector and the second collector, needle-shaped whiskers may be coated or adhered to the surface for hydrophobicity or the like. For example, a paste or suspension including a needle-shaped whisker and a binder may be coated on the outer surface of the sintered body and heat-treated at a temperature of about 400 to 1000° C. to form it. The binder may be polyvinyl alcohol (PVA), polyethylene glycol (PEG), or the like. The binder is preferably mixed in an amount of 1 to 20 parts by weight based on 100 parts by weight of the needle-shaped whisker. In the heat treatment process, the organic component is burned out at a temperature of 300 to 400 ° C. Since the heat treatment temperature is made at a temperature higher than the temperature at which the organic component burns, all the organic components are removed when the heat treatment process is completed. A needle-shaped whisker is coated or attached to the surfaces or pores of the ribs and rib blocks constituting the first and second collectors, and the needle-shaped whisker prevents water droplets from forming on the surfaces of the first and second collectors. By suppressing it, the first collector and the second collector may serve to have hydrophobicity.

As mentioned above, although preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications are possible by those skilled in the art.

10: rotor
20: brake pad
30: brake caliper
110: first collector
120: second collector
130: upper collector
140: rib
150: channel
155: inlet
160: first collector cover
170: second collector cover
180: upper collector cover

Claims (24)

A filter for collecting fine dust generated by friction between a rotor and a brake pad in a brake device of a transportation engine,
a first collector surrounding a portion of an outer surface of the rotor;
an upper collector surrounding a portion of an outer circumferential surface of the rotor; and
and a second collector surrounding a portion of the inner surface of the rotor,
The first collector and the second collector,
It includes ribs arranged in a serpentine type, and a channel forming an empty space between the ribs and the ribs,
The ribs of the first collector and the second collector are made of a porous ceramic material,
and the ribs of the first collector and the second collector are coated with a hydrophobic coating film and exhibit hydrophobicity.
The collection filter according to claim 1, wherein the collection filter is provided in a U-shape in appearance to partially accommodate the rotor inside the U-shape.
According to claim 1, wherein the first collector is provided to face the outer surface of the rotor,
The second collector is provided to face the inner surface of the rotor,
The second collector is positioned opposite to the first collector with respect to the disk-shaped rotor,
and the first collector and the second collector are disposed to face each other with respect to the rotor.
The collection filter according to claim 1, wherein the ribs have a curved shape.
5. The collection filter of claim 4, wherein a curvature of the ribs forming a curved shape is the same as a disk curvature of the rotor having a disk shape.
The collection filter according to claim 1, wherein the distance between the ribs and the ribs is the same.
The collection filter according to claim 1, wherein the ribs have the same thickness.
delete According to claim 1, wherein the ceramic material is alumina (Al ₂ O ₃ ), cordierite (cordierite, 2MgO·2Al ₂ O ₃ ·5SiO ₂ ), whiskers, mullite (mullite, 3Al ₂ O ₃ ·2SiO ₂ ) and A collection filter, characterized in that it is made of at least one ceramic material selected from the group consisting of silicon carbide (SiC).
[2] The collection filter of claim 1, wherein the ribs of the first collector and the second collector have a porosity of 40 to 80%.
The collection filter according to claim 1, wherein the pores distributed in the ribs of the first collector and the second collector have an average size of 0.5 to 15 μm.
delete The collection filter according to claim 1, wherein the hydrophobic coating film has a thickness of 100 nm to 2 μm.
The collection filter according to claim 1, wherein a needle-shaped whisker is coated or adhered to surfaces of the ribs of the first collector and the second collector.
The apparatus of claim 1 , further comprising: a first collector cover for covering and protecting the first collector and preventing fine dust flowing into the channel from leaking to the outside; and
The collection filter of claim 1, further comprising a second collector cover for covering and protecting the second collector and preventing the fine dust flowing into the channel from leaking to the outside.
The collection filter of claim 1, wherein an upper collector cover for protecting the upper collector is further provided above the upper collector.
The collection filter according to claim 16, wherein holes are formed in the upper collector cover so that clean air filtered by the upper collector can escape to the outside.
The collection filter according to claim 1, wherein the upper collector is formed of a ceramic fiber filter in which ceramic fibers are entangled in a network form.
19. The collection filter of claim 18, wherein the upper collector has a porosity of 40 to 80%.
The collection filter according to claim 17, wherein the pores distributed in the upper collector have an average size of 50 to 400 nm.
The method of claim 1, wherein the ribs include a first rib, a second rib, a third rib, a fourth rib, a fifth rib and a sixth rib,
The first rib and the second rib are connected at one end, the second rib and the third rib are connected at the other end, the third rib and the fourth rib are connected at one end, and the fourth rib and the fifth rib are connected at one end. The collection filter, characterized in that connected at the other end, the fifth rib and the sixth rib are connected at one end.
The method of claim 1 , wherein in the first collector and the second collector,
A rib block is provided at the end of the rib, and the rib block is a medium connecting the rib and the rib,
Fine dust generated by friction between the rotor and the brake pad is introduced through the inlet of the channel,
In the Y-axis direction perpendicular to the X-axis, which is the rotation axis of the rotor, an empty space between the inlet of the channel and the rib block constitutes the channel, and in the Z-axis direction perpendicular to the X-axis and Y-axis, the rib and An empty space between the ribs is an area constituting the channel.
The collection filter according to claim 1, wherein the fine dust generated by friction between the rotor and the brake pad is introduced through an inlet of the channel, and the inlet is directed toward the brake pad.
The collection filter according to claim 1, wherein the collection filter is replaceable.

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