Portable compressed air filter using a multi-cyclone system

Abstract

A portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention includes a housing in which an airflow section is formed and compressed air is introduced and discharged, and an impurity separation section provided in the airflow section of the housing for separating impurities from the compressed air, wherein the impurity separation section includes a first cyclone forming section above which the introduced compressed air is made to flow as a swirling flow to centrifuge the impurities, and a second cyclone forming section provided inside the first cyclone forming section which is made to flow again as a swirling flow the compressed air that has passed through the first cyclone forming section to centrifuge the impurities.

Description

Technical Field

[0001] The present invention relates to a compressed air filter capable of separating and supplying impurities from compressed air. More specifically, using a multi-cyclone device, the compressed air is rapidly flowed to centrifugally separate moisture, oil, etc. contained in the compressed air so that they fall by their own weight, and a portable compressed air filter using a multi-cyclone device capable of discharging air from which impurities such as moisture and oil have been removed.

Background Art

[0002] Generally, a compressor that compresses and supplies air may mix moisture, oil, etc. during the process of flowing air in from the outside and compressing it inside the tank, or may generate them during the operation of the compressor.

[0003] Such compressed air is used for driving a spray device for painting, an air tool, etc. However, if oil or moisture is mixed into the spray device, the painting quality deteriorates, and if moisture or oil flows into an air tool, etc., it may cause a failure in the air tool.

[0004] To prevent this, a filter is installed during the process of supplying compressed air so that it flows in after removing moisture and oil.

[0005] However, when installing a filter, there is a problem that the inflow pressure of air decreases due to the filter.

[0006] In relation to this, in Prior Art Document 1 (Korean Registered Patent No. 10-1844923, Gas-liquid separator for compressor), when separating a liquid from a gas, a configuration is disclosed in which separation is performed using a centrifugal separation method, adsorption is performed using a solid particle adsorbent, and then adsorption is performed by a breathable oil-water adsorption member.

[0007] However, in Prior Art Document 1, there is a problem that the pressure of air decreases while passing through the breathable oil-water adsorption member.

[0008] Furthermore, a problem arises where the oil-water mixture separated by centrifugal force mixes with the air rotating in the swirling flow generation tube and is discharged together. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Korean Registered Patent Publication No. 10-1844923 [Overview of the project] [Problems that the invention aims to solve]

[0010] The present invention was derived to solve the above-mentioned problems, and aims to provide a portable compressed air filter using a multi-cyclone device that rotates air using a multi-cyclone device, centrifugally separates impurities such as oil and moisture from the air, allows the separated impurities to fall, and prevents the aggregated impurities from mixing into the air circulation process or flowing back due to changes in slope, etc. [Means for solving the problem]

[0011] A portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention for solving the above-mentioned problems includes a housing in which an airflow section is formed inside and compressed air is introduced and discharged, and an impurity separation section provided in the airflow section of the housing for separating impurities from the compressed air, wherein the impurity separation section includes a first cyclone forming section that causes the compressed air introduced to the upper part of the impurity separation section to flow as a swirling flow to centrifuge the impurities, and a second cyclone forming section provided inside the first cyclone forming section that causes the compressed air that has passed through the first cyclone forming section to flow again as a swirling flow to centrifuge the impurities.

[0012] Herein, the housing is characterized by including a compressed air inlet provided at the upper part of the airflow section into which compressed air is introduced, and a compressed air discharge section provided at the lower part of the airflow section for discharging compressed air from which impurities have been separated.

[0013] Furthermore, the impurity separation unit is provided below the first cyclone forming unit and is characterized by including an aggregation unit that guides the impurities separated from the compressed air swirling in the first cyclone forming unit downwards and aggregates them.

[0014] Furthermore, the lower part of the impurity separation section is provided with a collection section into which the separated impurities fall and are collected, and the collection section is characterized by including a first collection section into which impurities separated in the first cyclone forming section are collected, and a second collection section into which impurities separated in the second cyclone forming section are collected.

[0015] Herein, the impurity separation unit is characterized by being equipped with a first backflow prevention stage that prevents impurities aggregated by the first collection unit from flowing back up to the upper part.

[0016] Furthermore, the path through which compressed air moves between the first cyclone forming section and the second cyclone forming section is equipped with an oil guard that blocks separated impurities from entering the compressed air path.

[0017] Herein, the oil guard is characterized in that it has a number of air discharge holes that provide a passage for compressed air that has passed through the first cyclone forming section to move to the second cyclone forming section, and an impurity blocking section is provided outside the air discharge holes that divides the first cyclone forming section and the second cyclone forming section and blocks the movement of impurities.

[0018] On the other hand, the air flow section is provided with an air discharge pipe installed in the center so as to extend to the upper inner side of the second cyclone forming section, which guides and discharges the compressed air from which impurities have been separated by the second cyclone forming section toward the compressed air discharge port.

[0019] Here, an upper portion of the air discharge pipe is provided with a reverse guard for preventing impurities separated from the compressed air flowing as 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.

[0020] Further, the second collection section is provided with a second backflow prevention stage for blocking so that impurities centrifuged and dropped from the compressed air can be collected without flowing back.

Advantage of the Invention

[0021] When compressed air is introduced into the portable compressed air filter using the multi-cyclone device according to an embodiment of the present invention, the air is rotated by the multi-cyclone forming section, and while the air is rotating, moisture and oil are centrifuged and dropped by their own weight, and the moisture and oil can be discharged in a separated state.

[0022] Also, the dropped moisture and oil are prevented from being mixed into the air again by the air flow, backflow is prevented by the change in angle, and the separation efficiency of impurities can be increased.

[0023] Also, when the air from which moisture and oil have been separated by the first cyclone operation moves to the next cyclone forming section, the oil guard can prevent moisture and oil from being mixed in.

Brief Description of the Drawings

[0024] [Figure 1] It is an overall perspective view of a portable compressed air filter using a multi-cyclone device according to an embodiment of the present invention. [Figure 2] It is an exploded perspective view of a portable compressed air filter using a multi-cyclone device according to an embodiment of the present invention. [Figure 3]The perspective view of the I-I line cross-section of a portable compressed air filter using a multicyclone device according to an embodiment of the present invention. [Figure 4] The cross-sectional view of the I-I line showing the path through which compressed air moves in a portable compressed air filter using a multicyclone device according to an embodiment of the present invention. [Figure 5] The perspective view showing only the speed controller of the impurity discharge part in a portable compressed air filter using a multicyclone device according to an embodiment of the present invention. [Figure 6] The perspective view showing only the valve core of the impurity discharge part in a portable compressed air filter using a multicyclone device according to an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0025] The present invention is for compressed air to flow in and be discharged. Inside, the compressed air is made to flow as a swirling flow to form a cyclone, so that foreign substances such as moisture and oil are centrifugally separated and fall, and the separated impurities can be prevented from being mixed into the compressed air again by the flow of the compressed air.

[0026] Hereinafter, a portable compressed air filter using a multicyclone device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0027] FIG. 1 is an overall perspective view of a portable compressed air filter using a multicyclone device according to an embodiment of the present invention.

[0028] Referring to FIG. 1, the present invention includes a housing 100 composed of a compressed air inlet 110 into which compressed air is input from a compressor, an air flow part 120 that provides a space for flowing the input compressed air, and a compressed air outlet 130 that discharges the compressed air that has flowed in the air flow part 120 and from which impurities have been separated.

[0029] The compressed air inlet 110 and the compressed air outlet 130 are connected vertically with the airflow section 120 in between, providing airtight protection for the airflow section 120.

[0030] Here, the upper part of the airflow section 120 is provided with an inlet-side O-ring 121 that can airtightly seal the inside when connected to the compressed air inlet 110, and the lower part of the airflow section 120 is provided with an outlet-side O-ring 122 that can airtightly seal the inside when connected to the compressed air outlet 130.

[0031] 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.

[0032] Referring to Figure 2, the present invention includes an impurity separation section 200 inside the airflow section 120.

[0033] The impurity separation unit 200 includes a first cyclone forming unit 210 that causes the compressed air introduced into the compressed air inlet 110 to flow as a swirling flow, and a second cyclone forming unit 260 provided inside the first cyclone forming unit 210 that causes the compressed air, which has been flowed by the first cyclone forming unit 210 and from which impurities have been separated, to flow again as a swirling flow and move inward.

[0034] Furthermore, the central portion of the second cyclone forming section 260 is configured as a vertically shaped pipe and includes an air discharge pipe 290 for discharging compressed air transferred from the first cyclone forming section 210 and the second cyclone forming section 260.

[0035] Furthermore, the housing 100 is provided with an impurity discharge section 300 below the compressed air outlet 130, which can discharge separated impurities.

[0036] Here, the upper part of the first cyclone forming section 210 is provided with an inflow air outward guide section 211 that guides the compressed air introduced into the compressed air inlet 110 in the center outwards.

[0037] Furthermore, since the compressed air guided outward by the inflow air outward guide section 211 is guided outward as a swirling flow and moved outward, a first air rotation guide groove 212 is formed that can rotate outward to form a cyclone.

[0038] The second cyclone forming section 260 is connected to the inside of the first cyclone forming section 210, and when compressed air from which impurities have been separated by the first cyclone forming section 210 flows into the second cyclone forming section 260, it is made to flow again as a swirling flow to form a cyclone inward.

[0039] A second air rotation guide groove 261 is formed in the upper part of the second cyclone forming section 260, which rotates the air flowing in from the outside and transports it inward, thereby guiding it to flow inward as a swirling flow.

[0040] This allows the compressed air that is introduced to flow as a swirling flow, separating impurities such as water and oil through centrifugal force before discharge.

[0041] On the other hand, an oil guard 250 is provided between the first cyclone forming section 210 and the second cyclone forming section 260 to prevent separated impurities from flowing in when they are transferred from the first cyclone forming section 210 to the second cyclone forming section 260.

[0042] The oil guard 250 is disc-shaped and has a number of air discharge holes 251 that are spaced at predetermined intervals.

[0043] The air discharge hole 251 has a structure that extends downward, and an impurity blocking section 252 is formed in the other part to block the inflow of air and impurities.

[0044] Furthermore, the outer edge of the air discharge hole 251 is sloped in a way that it widens from the bottom to the top, forming an outer dispersion wall 251a that disperses compressed air to the outside of the air discharge hole 251 by the sloped surface.

[0045] As a result, the compressed air flowing through the first cyclone forming section 210 is dispersed without immediately flowing into the second cyclone forming section 260, and impurities are blocked from flowing in together.

[0046] Figure 3 is a cross-sectional perspective view of a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0047] Referring to Figure 3, the first cyclone forming section 210 is provided with an aggregation section 220 that guides impurities centrifuged from the compressed air flowing along its lower outer edge outwards and guides them to aggregate downwards along the inner wall surface of the airflow section 120.

[0048] Furthermore, a collection section 230 is formed below the impurity separation section 200, in which impurities separated by the first cyclone formation section 210 and the second cyclone formation section 260 are collected.

[0049] The collection section 230 is comprised of a first collection section 231 formed on the lower outer side of the first cyclone forming section 210 and a second collection section 232 formed on the lower inner side of the second cyclone forming section 260.

[0050] Furthermore, a first backflow prevention stage 240 is formed on the lower outer side of the second cyclone forming section 260 to prevent the impurities collected in the first collection section 231 from flowing back.

[0051] The first backflow prevention stage 240 is formed relatively above the first collection section 231 and positioned below the second cyclone forming section 260.

[0052] Furthermore, directly above the first backflow prevention stage 240, a first cyclone guide section 241 is formed to guide the compressed air flowing through the first cyclone forming section 210 towards the oil guard 250.

[0053] The first cyclone guide unit 241 has a shape that slopes upward from the outside to the inside, guiding compressed air to the oil guard 250 directly above it, and allowing the compressed air to pass through the air discharge hole 251 of the oil guard 250.

[0054] The air discharge pipe 290 extends vertically and communicates with the compressed air outlet 130, and discharges compressed air, from which impurities have been removed from the air flowing as a swirling flow by the second cyclone forming section 260, towards the compressed air outlet 130.

[0055] Here, a reverse guard 270 is provided at the top of the air discharge pipe 290 to prevent impurities separated from the air flowing through the second cyclone forming section 260 from flowing back towards the air discharge pipe 290.

[0056] The reverse guard 270 can be provided in a ring shape along the upper periphery of the air discharge pipe 290.

[0057] Such a reverse guard 270 can have a circular cross-section, as shown in Figure 2.

[0058] Furthermore, as shown in Figure 3, the compressed air flow may be guided more smoothly towards the air discharge pipe 290 by being provided with a sloping surface that widens outward from the top to the bottom.

[0059] A second backflow prevention stage 280 is formed above the second collection section 232, which prevents impurities collected in the second collection section 232 from flowing back due to inclination or flow.

[0060] The second backflow prevention stage 280 is in the form of a circular tube extending from the top to the bottom of the space of the second collection section 232. As a result, even if the housing 100 is tilted, the collected impurities are not mixed with the compressed air and are collected in the second collection section 232.

[0061] As a result, when compressed air is introduced, it is made to flow as a swirling flow, separating impurities such as water and oil by centrifugal force. The separated impurities then fall to the bottom due to their own weight, agglomerate, and are discharged, allowing the compressed air, now free of impurities, to be released to the compressed air outlet 130.

[0062] Figure 4 is a cross-sectional view taken along line II illustrating the path through which compressed air travels in a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention.

[0063] Referring to Figure 4, when compressed air flows into the compressed air inlet 110, it is guided outward by the inflow air outer guide section 211 of the first cyclone forming section 210, passes through the first air rotation guide groove 212, and flows as a swirling flow.

[0064] Next, impurities such as water and oil are separated by centrifugal force and move downwards, then are moved into the inside of the first cyclone forming section 210 by the first cyclone induction section 241.

[0065] The compressed air that has moved inside the first cyclone forming section 210 passes through the oil guard 250 and moves to the second cyclone forming section 260.

[0066] Here, the aggregation section 220 formed along the lower outer peripheral edge of the first cyclone forming section 210 guides the separated impurities outward, causing them to fall downward, and the separated impurities are collected in the first collection section 231.

[0067] As described above, the impurities collected in the first collection unit 231 can be prevented from flowing back by the first backflow prevention stage 240.

[0068] The compressed air that has moved to the second cyclone forming section 260 passes through the second air rotation guide groove 261 and flows as a swirling flow inside the second cyclone forming section 260, forming a cyclone.

[0069] As a result, impurities are separated again from the compressed air, and the separated impurities fall to the bottom and are collected in the second collection unit 232.

[0070] Next, the compressed air, from which impurities have been separated by the airflow, moves upward and is discharged towards the air exhaust pipe 290.

[0071] Here, the reverse guard 270, which is provided at the top of the air discharge pipe 290, guides the flow of compressed air towards the air discharge pipe 290, preventing the separated impurities from flowing back and being discharged together.

[0072] As described above, the compressed air from which impurities have been separated passes through the air discharge pipe 290 and is discharged to the compressed air outlet.

[0073] On the other hand, the impurity discharge section 300 is configured to include a first discharge section 310 provided below the first collection section 231 that can discharge separated impurities, and a second discharge section 320 provided below the second collection section 232 that can discharge separated impurities.

[0074] Here, the first discharge section 310 and the second discharge section 320 can be applied as either a speed controller structure or a valve core structure.

[0075] Figure 5 is a perspective view illustrating a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention, with a speed controller applied to the first discharge section of the impurity discharge unit.

[0076] Referring to Figure 5, in the impurity discharge section 300, when the speed controller structure is applied to the first discharge section 310, the impurity discharge section 300 is configured to include a first discharge valve 311 provided on the bottom surface of the first collection section 231 which can discharge impurities collected in the first collection section 231, an adjustment dial 312 provided on one side of the compressed air outlet 130 which can discharge impurities by adjusting the amount of air discharged from the first discharge valve 311, and a discharge nipple 313 which discharges impurities flowing into the first discharge valve 311 to the outside.

[0077] This allows the amount of impurities collected in the first collection unit 231 to be discharged to an appropriate level, minimizing the loss of compressed air while discharging the impurities.

[0078] Figure 6 is a perspective view illustrating a portable compressed air filter using a multi-cyclone device according to one embodiment of the present invention, in which a valve core is applied to the second discharge section of the impurity discharge section.

[0079] Referring to Figure 6, in the impurity discharge section 300, when the valve core structure is applied to the second discharge section 320, the impurity discharge section 300 includes a second discharge valve 321 provided on the bottom surface of the second collection section 232, which opens and closes to discharge impurities collected in the second collection section 232, and an open / close button 322 that allows the second discharge valve 321 to be opened and closed externally to selectively discharge impurities.

[0080] Figure 5 illustrates the state in which a speed controller structure is applied to the first discharge section 310, and Figure 6 illustrates the state in which a valve core structure is applied to the second discharge section 320. However, the explanation is not limited to these, and the speed controller structure or the valve core structure can be selectively applied to the first discharge section 310 and the second discharge section 320, respectively.

[0081] For example, a valve core structure can be applied to the first discharge section 310 and a speed controller structure can be applied to the second discharge section 320. Either both the first discharge section 310 and the second discharge section 320 can have a speed controller structure applied, or both the first discharge section 310 and the second discharge section 320 can have a valve core structure applied.

[0082] This allows the opening and closing mechanism to minimize compressed air loss and allow impurities collected in the second collection unit 232 to be discharged.

[0083] As described above, the present invention allows compressed air to flow in from a compressor and discharged after impurities have been separated, by connecting to a spraying device or air tool for painting. The formation of a cyclone centrifugally separates the impurities, and the separated impurities fall to the bottom, preventing backflow due to changes in slope or the flow of compressed air. This allows compressed air to be discharged with impurities efficiently removed.

Claims

1. A housing (100) has an airflow section (120) formed inside into which compressed air is introduced and discharged, The housing (100) includes an airflow section (120) and an impurity separation section (200) for separating impurities from compressed air, A portable compressed air filter using a multi-cyclone device, characterized in that the impurity separation unit (200) includes a first cyclone forming unit (210) that causes compressed air introduced into the upper part of the impurity separation unit (200) to flow as a swirling flow to centrifuge impurities, and a second cyclone forming unit (260) provided inside the first cyclone forming unit (210) that causes compressed air that has passed through the first cyclone forming unit (210) to flow again as a swirling flow to centrifuge impurities.

2. A portable compressed air filter using a multi-cyclone device according to claim 1, characterized in that the housing (100) includes a compressed air inlet (110) provided at the top of the airflow section (120) into which compressed air is introduced, and a compressed air outlet (130) provided at the bottom of the airflow section (120) for discharging compressed air from which impurities have been separated.

3. The portable compressed air filter using a multi-cyclone device according to claim 1, characterized in that the impurity separation unit (200) is provided below the first cyclone forming unit (210) and includes an aggregation unit (220) that guides and aggregates impurities separated from the compressed air swirling in the first cyclone forming unit (210) to the lower part.

4. A portable compressed air filter using a multi-cyclone device according to claim 1, wherein a collection section (230) is provided below the impurity separation section (200) for collecting separated impurities, and the collection section (230) includes a first collection section (231) for collecting impurities separated in the first cyclone forming section (210) and a second collection section (232) for collecting impurities separated in the second cyclone forming section (260).

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

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

7. A portable compressed air filter using a multi-cyclone device according to claim 6, characterized in that the oil guard (250) has a number of air discharge holes (251) formed therein, which provide a passage for compressed air that has passed through the first cyclone forming section (210) to move to the second cyclone forming section (260), and an impurity blocking section (252) is provided outside the air discharge holes (251) that separates the first cyclone forming section (210) and the second cyclone forming section (260) and blocks the movement of impurities.

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

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

10. A portable compressed air filter using a multi-cyclone device according to claim 4, characterized in that the second collection section (232) is provided with a second backflow prevention stage (280) that prevents impurities that have been centrifuged from the compressed air and fallen from the compressed air from being collected without backflow.

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