Portable compressed-air filter using multi-cyclone device

Abstract

A portable compressed-air filter using a multi-cyclone device, according to an embodiment of the present invention, comprises: a housing having an air flow part formed therein, through which compressed air is introduced and discharged; and an impurity separation part provided in the air flow part of the housing to separate impurities from the compressed air, wherein the impurity separation part comprises: a first cyclone-forming part provided at an upper portion thereof, to induce the introduced compressed air into a swirling flow and centrifugally separate impurities; and a second cyclone-forming part provided inside the first cyclone-forming part, to induce the compressed air, having passed through the first cyclone-forming part, into a swirling flow again and centrifugally separate impurities.

Description

Portable compressed air filter using multi-cyclone device

[0001] The present invention relates to a compressed air filter capable of separating and supplying impurities from compressed air, and more specifically, to a portable compressed air filter using a multi-cyclone device capable of rapidly flowing compressed air using a multi-cyclone device to centrifuge and separate moisture and oil contained in the compressed air, and causing them to fall by their own weight, thereby discharging air from which impurities such as moisture and oil have been removed.

[0002] In general, a compressor that compresses and supplies air draws in air from the outside and compresses it inside a tank. During this process, moisture or oil may be mixed in or generated during the operation of the compressor.

[0003] This compressed air is used to drive spraying devices or air tools for painting. If oil or moisture gets into the spraying device, the painting quality will deteriorate, and if moisture or oil gets into the air tools, it can cause the air tools to malfunction.

[0004] To prevent this, a filter is installed during the compressed air supply process to ensure that moisture and oil are removed before the compressed air is supplied.

[0005] However, when a filter is installed, the problem of the air intake pressure being reduced by the filter occurs.

[0006] In relation to this, prior art document 1 (registered patent 10-1844923, gas-liquid separator for compressor) discloses a configuration in which a centrifugal separation method is used to separate liquid from gas, solid granular adsorbent is used to adsorb it, and then a breathable oil-water adsorption member is used to adsorb it.

[0007] However, prior art document 1 has a problem in that the air pressure decreases as it passes through the breathable moisture absorption member.

[0008] In addition, a problem arises in which the water separated by centrifugal force is mixed with the air rotated by the vortex generator and discharged together.

[0009] The present invention has been devised to solve the above-mentioned problem, and the purpose of the present invention is to provide a portable compressed air filter using a multi-cyclone device that rotates air using a multi-cyclone device, centrifuges impurities such as oil or moisture from the air, and causes the separated impurities to fall and coagulate, thereby preventing the coagulated impurities from being mixed in the air circulation process or flowing backward due to changes in inclination, etc.

[0010] In order to solve the above-described problem, a portable compressed air filter using a multi-cyclone device according to an embodiment of the present invention comprises a housing having an air flow portion formed therein and into which compressed air is introduced and discharged, and an impurity separation portion provided in the air flow portion of the housing to separate impurities from the compressed air, wherein the impurity separation portion comprises a first cyclone forming portion provided on the upper portion of the impurity separation portion to cause the introduced compressed air to flow in a circular flow to centrifuge impurities, and a second cyclone forming portion provided inside the first cyclone forming portion to cause the compressed air passing through the first cyclone forming portion to flow again in a circular flow to centrifuge impurities.

[0011] Here, the housing is characterized by including a compressed air inlet provided at the upper portion of the air flow section for inputting compressed air, and a compressed air discharge section provided at the lower portion of the air flow section for discharging compressed air from which impurities have been separated.

[0012] And it is characterized by including a coagulation unit provided at the lower part of the first cyclone forming unit and coagulating impurities separated from the compressed air swirling in the first cyclone forming unit by directing them downward.

[0013] In addition, the impurity separation unit is provided with a collecting unit in which separated impurities fall and are collected, and the collecting unit is characterized in that it includes a first collecting unit in which impurities separated in the first cyclone forming unit are collected and a second collecting unit in which impurities separated in the second cyclone forming unit are collected.

[0014] Here, the impurity separation unit is characterized in that it is provided with a first backflow prevention barrier that prevents the impurities aggregated by the first collection unit from flowing back upward.

[0015] And, it is characterized in that an oil guard (250) is provided in the path through which compressed air moves between the first cyclone forming unit (210) and the second cyclone forming unit to prevent separated impurities from being mixed into the path through which compressed air moves.

[0016] At this time, the oil guard is characterized in that a plurality of air discharge holes are formed to provide a passage for compressed air passing through the first cyclone forming part to move to the second cyclone forming part, and an impurity blocking part is provided to block impurities from moving by dividing the first cyclone forming part and the second cyclone forming part to the outside where the air discharge holes are formed.

[0017] Meanwhile, the air flow section is characterized in that an air discharge pipe is provided in the center thereof to extend to the inner upper portion of the second cyclone forming section and to guide and discharge compressed air separated from impurities by the second cyclone forming section toward the compressed air discharge port.

[0018] Here, the upper portion of the air discharge pipe is provided with a reverse guard to prevent impurities separated from the compressed air flowing in a swirling flow in the second cyclone forming section from moving together along the compressed air discharge path and being discharged into the air discharge pipe.

[0019] In addition, the second collecting unit is characterized by being provided with a second backflow prevention barrier that prevents impurities that have fallen through centrifugation from the compressed air from flowing back and being collected.

[0020] A portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention has the effect of rotating the air by a multi-cyclone forming unit when compressed air is input, and while the air is rotating, moisture and oil are centrifugally separated and fall by their own weight, so that the moisture and oil can be discharged in a separated state.

[0021] In addition, it has the effect of preventing the fallen moisture and oil from being mixed back into the air by the air flow and preventing backflow by changing the angle, thereby increasing the efficiency of separating impurities.

[0022] In addition, there is an effect that can prevent moisture and oil from being mixed by the oil guard when the air separated from moisture and oil by the first cyclone operation moves to the next cyclone formation section.

[0023] FIG. 1 is a perspective view of a portable compressed air filter using a multi-cyclone device according to an embodiment of the present invention.

[0024] Figure 2 is an exploded perspective view of a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0025] Figure 3 is a cross-sectional perspective view taken along line I-I of a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0026] FIG. 4 is a cross-sectional view taken along line I-I showing the path along which compressed air moves in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0027] FIG. 5 is a perspective view showing only the speed controller of the impurity discharge unit in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0028] FIG. 6 is a perspective view showing only the valve core of the impurity discharge unit in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0029] The present invention is characterized in that compressed air is introduced and discharged, and the compressed air is made to flow in a circular flow to form a cyclone inside, and foreign substances such as moisture or oil are centrifugally separated and dropped by the formation of the cyclone, while the separated impurities are prevented from being mixed back into the compressed air by the flow of the compressed air.

[0030] Hereinafter, a portable compressed air filter using a multi-cyclone device according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[0031] FIG. 1 is a perspective view of a portable compressed air filter using a multi-cyclone device according to an embodiment of the present invention.

[0032] Referring to FIG. 1, the present invention comprises a housing (100) comprising a compressed air inlet (110) into which compressed air is introduced from a compressor, an air flow portion (120) that provides a space for the introduced compressed air to flow, and a compressed air discharge portion (130) that discharges compressed air that flows in the air flow portion (120) and from which impurities are separated.

[0033] The compressed air inlet (110) and compressed air outlet (130) are connected vertically with the air flow section (120) interposed therebetween to hermetically protect the air flow section (120).

[0034] At this time, an O-ring (121) on the inlet side that can seal the inside airtightly when combined with the compressed air inlet (110) is provided on the upper part of the air flow section (120).

[0035] At the lower part of the air flow section (120), an O-ring (122) on the discharge side is provided that can seal the inside airtightly when combined with the compressed air discharge port (130).

[0036] FIG. 2 is an exploded perspective view of a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0037] Referring to FIG. 2, the present invention provides an impurity separation unit (200) inside an air flow unit (120).

[0038] The above impurity separation unit (200) is configured to include a first cyclone forming unit (210) that causes compressed air input through the compressed air inlet (110) to flow in a circular flow, and a second cyclone forming unit (260) that is provided inside the first cyclone forming unit (210) and causes the compressed air, which is flowed by the first cyclone forming unit (210) and from which impurities are separated, to flow in a circular flow once again and move inward.

[0039] And, it is configured to include an air discharge pipe (290) in the form of a vertical tube in the central part of the second cyclone forming part (260) for discharging compressed air transferred from the first cyclone forming part (210) and the second cyclone forming part (260).

[0040] And, in the housing (100), an impurity discharge unit (300) capable of discharging separated impurities is provided at the lower part of the compressed air discharge port (130).

[0041] Here, an inlet air outer induction part (211) is provided at the upper part of the first cyclone forming part (210) to induce compressed air introduced into the compressed air inlet (110) at the center to the outside.

[0042] And, by guiding the compressed air induced outward by the above-mentioned inlet air outer induction part (211) into a swirling flow and moving it outward, a first air rotation induction groove (212) is formed that can rotate outward and form a cyclone.

[0043] The second cyclone forming unit (260) is coupled to the inside of the first cyclone forming unit (210), and when compressed air from which impurities have been separated by the first cyclone forming unit (210) flows inside, it flows again into a swirling flow to form a cyclone in the inward direction.

[0044] At the upper portion of the second cyclone forming portion (260), a second air rotation induction groove (261) is formed to induce the air flowing in from the outside to rotate and be transferred inward, thereby causing it to flow inward as a swirling flow.

[0045] This allows the injected compressed air to flow in a circular flow, allowing it to be discharged with impurities such as moisture or oil separated by centrifugal force.

[0046] Meanwhile, an oil guard (250) is provided between the first cyclone forming unit (210) and the second cyclone forming unit (260) to prevent separated impurities from flowing in when transferred from the first cyclone forming unit (210) to the second cyclone forming unit (260).

[0047] The above oil guard (250) is formed in a circular shape and has a plurality of air discharge holes (251) formed at regular intervals.

[0048] The above air discharge hole (251) is formed with a structure extending downward, and an impurity blocking portion (252) that blocks the inflow of air and impurities is formed in the remaining portion.

[0049] And the outer periphery of the air discharge hole (251) is formed in a slanted structure that becomes wider from the bottom to the top, so that an outer distribution wall (251a) is formed that disperses compressed air to the outside of the air discharge hole (251) by the slanted surface.

[0050] Due to this, the compressed air flowing through the first cyclone forming unit (210) is dispersed rather than being directly introduced, and impurities are prevented from being introduced together.

[0051] FIG. 3 is a cross-sectional perspective view taken along line I-I of a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0052] Referring to FIG. 3, a coagulation unit (220) is provided to guide impurities centrifugally separated from compressed air flowing along the lower outer periphery of the first cyclone forming unit (210) outward and coagulate them downward along the inner wall surface of the air flow unit (120).

[0053] And, at the bottom of the impurity separation unit (200), a collection unit (230) is formed in which impurities separated by the first cyclone formation unit (210) and the second cyclone formation unit (260) are collected.

[0054] The above capturing unit (230) is configured to include a first capturing unit (231) formed at the outer lower portion of the first cyclone forming unit (210) and a second capturing unit (232) formed at the inner lower portion of the second cyclone forming unit (260).

[0055] And, on the lower outer side of the second cyclone forming part (260), a first backflow prevention barrier (240) is formed to prevent the impurities captured by the first capturing part (231) from flowing back.

[0056] The above first backflow prevention barrier (240) is formed relatively to the upper part of the first collecting section (231), and is formed to be positioned lower in the second cyclone forming section (260).

[0057] And, immediately above the first backflow prevention barrier (240), a first cyclone induction unit (241) is formed to guide the compressed air flowing by the first cyclone forming unit (210) toward the oil guard (250).

[0058] The above first cyclone induction unit (241) has a shape that slopes upward from the outside to the inside, and induces compressed air toward the oil guard (250) directly above it, so that the compressed air can pass through the air discharge hole (251) of the oil guard (250).

[0059] The above air discharge pipe (290) is extended vertically in communication with the compressed air discharge port (130), and discharges compressed air with impurities removed from the air flowing in a swirling flow by the second cyclone forming unit (260) toward the compressed air discharge port (130).

[0060] Here, a reverse guard (270) is provided at the upper part of the air discharge pipe (290) to prevent impurities separated from the air flowing by the second cyclone forming unit (260) from moving toward the air discharge pipe (290) and flowing backward.

[0061] The above reverse guard (270) may be provided in a ring shape along the upper circumference of the air discharge pipe (290).

[0062] This reverse guard (270) may have a circular cross-section as shown in FIG. 2.

[0063] In addition, referring to FIG. 3, it may be provided in a form of a slope that becomes wider in the outward direction from the top to the bottom so as to guide the flow of compressed air more smoothly toward the air discharge pipe (290).

[0064] A second backflow prevention barrier (280) is formed on the upper portion of the second collecting section (232) to prevent impurities collected by the second collecting section (232) from flowing back due to a slope or flow.

[0065] The above second backflow prevention barrier (280) is formed in the shape of a circular tube extending from the upper part of the space of the second collecting part (232) toward the lower part, so that even if the inclination of the housing (100) is inclined, the collected impurities can be collected in the second collecting part (232) without being mixed into the compressed air.

[0066] As a result, when compressed air is injected, the compressed air flows in a circular flow, and impurities such as moisture or oil are separated by centrifugal force, and the separated impurities fall downward by their own weight, coagulate, and are then discharged, so that the compressed air with impurities removed can be discharged through the compressed air discharge port (130).

[0067] FIG. 4 is a cross-sectional view taken along line I-I showing the path along which compressed air moves in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0068] Referring to Fig. 4, when compressed air is introduced into the compressed air inlet (110), it is introduced outward by the inflow air outer guide portion (211) of the first cyclone forming portion (210) and flows as a swirling flow through the first air rotation guide groove (212).

[0069] Afterwards, impurities such as moisture or oil are separated by centrifugal force and move downwards, moving to the inside of the first cyclone forming unit (210) by the first cyclone induction unit (241).

[0070] The compressed air moved inside the first cyclone forming unit (210) passes through the oil guard (250) and moves to the second cyclone forming unit (260).

[0071] At this time, the coagulation section (220) formed along the lower outer perimeter of the first cyclone forming section (210) guides the separated impurities outward, causing the impurities to fall downward, and the separated impurities are captured in the first collecting section (231).

[0072] As described above, the impurities captured in the first capturing section (231) can be prevented from flowing back by the first backflow prevention barrier (240).

[0073] The compressed air moved to the second cyclone forming unit (260) passes through the second air rotation induction groove (261) and flows in a circular flow toward the inside of the second cyclone forming unit (260) to form a cyclone.

[0074] Accordingly, impurities are separated from the compressed air once again, and the separated impurities fall downward and are captured in the second collection unit (232).

[0075] Afterwards, the compressed air, from which impurities have been separated by the air flow, moves upward and is discharged toward the air discharge pipe (290).

[0076] At this time, the reverse guard (270) provided on the upper part of the air discharge pipe (290) guides the flow of compressed air toward the air discharge pipe (290), thereby preventing the separated impurities from flowing back and being discharged together.

[0077] As described above, the compressed air from which the impurities have been separated passes through the air discharge pipe (290) and is discharged through the compressed air discharge port.

[0078] Meanwhile, the impurity discharge unit (300) is configured to include a first discharge unit (310) provided at the lower portion of the first collection unit (231) and capable of discharging separated impurities, and a second discharge unit (320) provided at the lower portion of the second collection unit (232) and capable of discharging separated impurities.

[0079] Here, the first discharge unit (310) and the second discharge unit (320) can be applied as either a speed controller structure or a valve core structure.

[0080] FIG. 5 is a perspective view illustrating a state in which a speed controller is applied to a first discharge section of an impurity discharge section in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0081] Referring to FIG. 5, in the impurity discharge unit (300), when the speed controller structure is applied to the first discharge unit (310), it is configured to include a first discharge valve (311) provided on the bottom surface of the first collection unit (231) to discharge impurities collected by the first collection unit (231), an adjustment dial (312) provided on one side of the compressed air discharge port (130) to discharge impurities by controlling the amount of air discharged to the first discharge valve (311), and a discharge nipple (313) for discharging impurities flowing into the first discharge valve (311) to the outside.

[0082] This allows the impurities collected by the first collecting unit (231) to be discharged in an appropriate amount, thereby minimizing the loss of compressed air and discharging the impurities.

[0083] FIG. 6 is a perspective view illustrating a state in which a valve core is applied to a second discharge section of an impurity discharge section in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0084] Referring to Fig. 6, in the state where the valve core structure is applied to the second discharge unit (320) in the impurity discharge unit (300), the second discharge valve (321) is provided on the bottom surface of the second collection unit (232) and is opened and closed to discharge impurities collected by the second collection unit (232), and is configured to include an open / close button (322) that can selectively discharge impurities by opening and closing the second discharge valve (321) from the outside.

[0085] In Fig. 5, a state in which a speed controller structure is applied to the first discharge unit (310) is illustrated, and in Fig. 6, a state in which a valve core structure is applied to the second discharge unit (320) is illustrated, but the present invention is not limited thereto, and a speed controller structure or a valve core structure may be selectively applied to each of the first discharge unit (310) and the second discharge unit (320).

[0086] For example, a valve core structure may be applied to the first discharge portion (310), and a speed controller structure may be applied to the second discharge portion (320). Alternatively, a speed controller structure may be applied to both the first discharge portion (310) and the second discharge portion (320), or a valve core structure may be applied to both the first discharge portion (310) and the second discharge portion (320).

[0087] This allows the second collecting section (232) to be opened and closed so that the collected impurities are discharged while minimizing the loss of compressed air.

[0088] The present invention, which is constructed as described above, is connected to a spraying device or an air tool for painting, and can discharge compressed air from a compressor in a separated state by separating impurities, thereby centrifugally separating impurities by forming a cyclone, and preventing the centrifugally separated impurities from flowing back due to changes in inclination or the flow of compressed air while falling downward, thereby enabling the compressed air to be discharged in a state in which impurities have been efficiently removed.

Claims

1. A housing (100) in which an air flow section (120) is formed inside and compressed air is introduced and discharged; and Including an impurity separation unit (200) provided in the air flow unit (120) of the above housing (100) to separate impurities from compressed air; A portable compressed air filter using a multi-cyclone device, characterized in that it comprises a first cyclone forming unit (210) located on the upper portion of the impurity separation unit (200) to cause the injected compressed air to flow in a circular flow to centrifuge impurities; and a second cyclone forming unit (260) provided on the inside of the first cyclone forming unit (210) to cause the compressed air passing through the first cyclone forming unit (210) to flow again in a circular flow to centrifuge impurities.

2. In claim 1, A portable compressed air filter using a multi-cyclone device, characterized in that the housing (100) includes a compressed air inlet (110) provided at the upper portion of the air flow portion (120) for inputting compressed air and a compressed air discharge portion (130) provided at the lower portion of the air flow portion (120) for discharging compressed air from which impurities have been separated.

3. In claim 1, A portable compressed air filter using a multi-cyclone device, characterized in that it includes a coagulation unit (220) provided at the lower portion of the first cyclone forming unit (210) and which guides impurities separated from compressed air flowing in a circular motion in the first cyclone forming unit (210) downward and coagulates them.

4. In claim 1, A portable compressed air filter using a multi-cyclone device, characterized in that a collecting unit (230) is provided at the lower part of the impurity separation unit (200) in which separated impurities fall and are collected, and the collecting unit (230) includes a first collecting unit (231) in which impurities separated in the first cyclone forming unit (210) are collected and a second collecting unit (232) in which impurities separated in the second cyclone forming unit (260) are collected.

5. In claim 4, A portable compressed air filter using a multi-cyclone device, characterized in that the impurity separation unit (200) is provided with a first backflow prevention barrier (240) that prevents impurities aggregated by the first collection unit (231) from flowing back upward.

6. In claim 1, A portable compressed air filter using a multi-cyclone device, characterized in that an oil guard (250) is provided in the path through which compressed air moves between the first cyclone forming unit (210) and the second cyclone forming unit (260) to prevent separated impurities from being mixed into the path through which compressed air moves.

7. In claim 6, A portable compressed air filter using a multi-cyclone device, characterized in that the oil guard (250) is provided with a plurality of air discharge holes (251) that provide a passage for compressed air passing through the first cyclone forming unit (210) to move to the second cyclone forming unit (260), and an impurity blocking unit (252) that blocks impurities from moving by dividing the first cyclone forming unit (210) and the second cyclone forming unit (260) to the outside where the air discharge holes (251) are formed.

8. In claim 2, A portable compressed air filter using a multi-cyclone device, characterized in that an air discharge pipe (290) is provided in the center of the air flow section (120) to extend to the inner upper portion of the second cyclone forming section (260) and guide and discharge compressed air, from which impurities have been separated by the second cyclone forming section (260), toward the compressed air discharge port (130).

9. In claim 8, A portable compressed air filter using a multi-cyclone device, characterized in that a reverse guard (270) is provided on the upper part of the air discharge pipe (290) to prevent impurities separated from the compressed air flowing in a circular flow in the second cyclone forming unit (260) from moving along the compressed air discharge path and being discharged into the air discharge pipe (290).

10. In claim 4, A portable compressed air filter using a multi-cyclone device, characterized in that the second collecting section (232) is provided with a second backflow prevention barrier (280) that prevents impurities that have fallen through centrifugation from compressed air from flowing back and being collected.

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