KR20230072804A - Cartridge filter - Google Patents

Abstract

The present invention relates to a cartridge filter, and according to an embodiment of the present invention, the cartridge filter includes a filter cloth into which external air is introduced into a cylindrical inner space and has a filter cloth pleated in a circumferential direction to filter the inflowing air. A body, coupled to cover the open upper part of the filter body, and an upper cap having an exhaust port formed through the top and bottom, disposed in parallel with the upper cap at a predetermined distance from each other vertically, and covering the open lower part of the filter body A cartridge filter including a coupled lower cap, including an air flow guide structure provided to protrude from an inside of the filter body toward the exhaust port, wherein the air flow guide structure has a cone shape toward the exhaust port from the inside of the filter body. can be extruded.

Description

Cartridge filter {CARTRIDGE FILTER}

The present invention relates to a cartridge filter, and more particularly, to a cartridge filter capable of uniformly adsorbing dust and gas by mounting a cone-shaped air flow guide structure inside the cartridge filter.

A dust collector is a kind of air purification device, and refers to a device that filters gas including dust and the like and then introduces the filtered gas back into the room or discharges the filtered gas to the outside.

In general, a dust collector is configured to include an intake port for intake of gas, an exhaust port for exhausting gas, and a filter for filtering out dust and the like included in the gas.

Specifically, the gas introduced through the inlet of the dust collector passes through a filter to filter out dust contained in the gas. In addition, the gas purified after passing through the filter may be introduced into the room or discharged to the outside through the exhaust port.

On the other hand, the filter of the dust collector needs to have heat resistance so that it can withstand high-temperature gas as needed. In addition, in order to increase filtering efficiency, the surface area of the filter may be provided in a form as large as possible.

As such, there is a cartridge filter as a type of filter having an increased surface area to improve filtering efficiency.

However, in a dust collector using a cartridge filter, when air is injected through a blower, the flow rate of the injected air increases as it approaches the exhaust port. Due to the difference in flow rate, there is a problem in that adsorption of dust and the like is not uniformly performed at the upper and lower portions of the cartridge filter.

As a prior art related to the present invention, Korean Patent Registration No. 10-1325078 discloses a filter for a dust collector, and the filter for a dust collector disclosed in the prior art has a filter cloth having a pleated shape to increase the surface area of the filter. show

However, even in the case of the dust collector filter disclosed in the prior literature, the flow rate of the intake air increases at a location close to the exhaust port, so that the air flow does not flow uniformly at the upper and lower parts of the filter, and dust is smoothly adsorbed. There are problems that cannot be supported.

Republic of Korea Patent Registration No. 10-1325078

An object of the present invention relates to a cartridge filter capable of uniformly adsorbing dust and gas by mounting a cone-shaped air flow guide structure inside the cartridge filter.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

Cartridge filter according to an embodiment of the present invention, the air blown under pressure according to the driving of the blowing fan provided in the dust collector is introduced into the cylindrical inner space, the filter cloth having a pleated shape in the circumferential direction to filter the inflowing air Filter body comprising a; an upper cap coupled to cover the open top of the filter body and having an exhaust port formed through the top and bottom; a lower cap disposed in parallel with the upper cap at a predetermined distance from the top and bottom and coupled to cover the open lower portion of the filter body; and an air flow guide structure provided to protrude from the inside of the filter body toward the exhaust port.

The exhaust port may be formed to penetrate vertically from an inner center of the upper cap.

The air flow guide structure may protrude in a cone shape from the inside of the filter body toward the exhaust port.

In the dust collector, when air is injected through a blower fan, a phenomenon in which the flow rate of air increases as the air sucked into the filter body toward a position closer to the upper cap, more specifically, to the exhaust port occurs. There is a problem in that dust and gas are not uniformly adsorbed at the upper part (ie, the part close to the upper cap) and the lower part (ie, the part close to the lower cap) of the filter body due to the difference in flow rate. In other words, when the outside air of the filter body is sucked into the inner space of the filter body by operating the blowing fan, the closer the air is drawn to the exhaust port located in the upper center of the filter body, the stronger the air flow and the higher the wind power of the air. Adsorption is concentrated. In addition, there was a problem in that a load was generated while the pressure at the upper end of the filter body rapidly increased.

A cartridge filter according to an embodiment of the present invention is a cartridge filter usable in a dust collector that injects air through a blowing fan, and a cone-shaped air flow guide structure is disposed inside the filter body so that dust and gas can be uniformly adsorbed. let it be The cone-shaped air flow guide structure refers to a guide device that guides a cone-shaped air flow protruding from the inner lower end (ie, lower cap) of the filter body toward the center of an exhaust port provided at the upper end (ie, upper cap). Since the cone-shaped air flow guide structure is mounted inside the filter body, the inner cross section of the filter body (that is, the air flow cross section) is gradually reduced from the top to the bottom of the filter body. It is possible to reduce the flow velocity difference between the lower part and the lower part and improve the dust and gas adsorption function for the entire length of the filter body.

The cone-shaped air flow guide structure, one end (or upper end) is fixed to the upper surface of the lower cap, the other end (or lower end) protrudes in a cone shape toward the upper cap, the protruding cone-shaped The front end may form the same center as the center of the exhaust port.

When the cone-shaped air flow guide structure is fixed to the upper surface of the lower cap and the tip of the cone is concentric with the center of the exhaust port, the air flow along the air flow guide structure is directed to the upper portion of the filter body and the upper portion of the filter body. It is made smoothly through the entire lower part and can be discharged stably through the exhaust port. In this way, the flow of air becomes smooth and the adsorption of dust and gas becomes uniform through the entire section of the filter body, thereby solving the conventional problem of non-uniform adsorption of dust and gas due to the difference in flow rate for each section.

An exhaust outlet extension pipe communicating with the exhaust port and extending upward to a predetermined length may be provided at an upper end of the upper cap. The exhaust outlet extension pipe has the same diameter as the exhaust port and extends the passage through which air is discharged, and allows air to be discharged stably at a constant flow rate.

A flange having an expanded diameter may be provided at an upper portion of the exhaust outlet extension pipe. A flange is formed on the top of the exhaust outlet extension tube, making it easy to connect with other devices.

According to another embodiment of the present invention, the airflow guide structure may include a cone-shaped body protruding from the inside of the filter body toward the exhaust port in a cone shape and having an empty inner space; a center support portion connected along the height center of the cone-shaped body; and a radial support portion radially connected between the center support portion and the inner wall surface of the cone-shaped body. The cone-shaped air flow guide structure may have a cross section filled with an inside, and unlike this, the inside space is provided in an empty form to enable weight reduction of the product. The cone-shaped body in which the inner space is provided in an empty form may have weak durability due to the pressure of air drawn from the outside to the inside of the filter body. The central support serves to connect and support the center of the cone-shaped body vertically, and the radial support serves to connect and support between the central support and the inner wall of the cone-shaped body in a horizontal direction.

Preferably, a screw-type fastening protrusion is provided at the lower end of the center support, and an insertion shaft inserted through a hole provided in the cone-shaped body is provided at the upper end of the center support, and the fastening protrusion is fastened to the inner center of the lower cap. A fixed fastening groove may be provided. According to this configuration, it is possible to install the central support unit in advance at the inner center of the lower cap, connect the radial support unit to the central support unit in a direction crossing the center support unit, and then couple the cone-shaped body to the central support unit and the radial support unit. Accordingly, considering the vertical length and cross-sectional size of the filter body, cone-shaped bodies of various sizes and shapes can be replaced in various ways as necessary, and partial replacement can be easily performed when the cone-shaped body is damaged. In addition, as the lower end of the central support is firmly fastened to the inner center of the lower cap, the front end of the cone-shaped body is concentric with the center of the exhaust port to firmly maintain the position and posture of the air flow guide structure in its initial shape. It can have a stable exhaust flow of air. In addition to this, a cone tip support may be further included. The cone front end support unit may fix the front end of the cone-shaped body around the exhaust vent so that the front end of the cone-shaped body continuously maintains a posture concentric with the center of the exhaust vent.

In addition, a sealing joint may be further provided between the lower end of the cone-shaped body and the upper surface of the lower cap. The sealing joint not only firmly joins the joint between the cone-shaped body and the lower cap, but also seals the joint to block the air sucked into the inner space of the filter body from entering the inner empty space of the cone-shaped body. can

In addition, a guide groove may be further provided on an outer surface of the cone-shaped body to guide the discharge of air toward the exhaust port while the air introduced into the inner space of the filter body flows along the outer surface of the cone-shaped body. At least one guide groove may be provided on an outer surface of the cone-shaped body for guiding the flow of air. For example, the guide groove may be a straight-line groove formed on the outer surface of the cone-shaped body at predetermined intervals. Air flows along the outer surface of the cone-shaped body along the straight line-shaped groove and can be stably discharged through the exhaust port. As another example, the guide groove may be a spiral groove formed along the outer surface of the cone-shaped body toward the tip of the cone. The spiral groove allows air drawn into the inner space of the filter body to be more stably discharged toward the exhaust port while flowing along the outer surface of the cone-shaped body.

According to the present invention, dust and gas adsorption can be made uniform by mounting the cone-shaped air flow guide structure inside the cartridge filter.

In a conventional dust collector using a cartridge filter, when air is injected through a blower, the flow rate of the injected air increases as it approaches the exhaust port. Due to the difference in flow rate, there is a problem in that dust and gas adsorption is not uniformly performed at the upper and lower portions of the cartridge filter. In particular, the dust collector operates a blowing fan to suck air outside the cartridge filter. The closer the air is drawn in to the exhaust port located in the center of the top of the cartridge filter, the stronger the wind power of the air increases and the adsorption is concentrated. There was a problem in that the pressure at the top increased rapidly and a load was generated.

According to the present invention, by improving the structure of a cartridge filter usable in a dust collector, dust and gas adsorption can be made uniformly. In particular, a cone-shaped air flow guide structure protruding from the lower inner side of the cartridge filter toward the center of the upper exhaust port is mounted. Accordingly, by providing a structure in which the inner cross section of the filter (ie, the air flow cross section) is gradually reduced from the top to the bottom of the filter, dust and gas adsorption between the upper and lower parts of the filter can be smoothly performed. .

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a perspective view briefly showing a cartridge filter according to an embodiment of the present invention.
Figure 2 is a half cross-sectional perspective view showing the internal structure of the cartridge filter according to an embodiment of the present invention.
Figure 3 is a cross-sectional view schematically showing a cartridge filter according to an embodiment of the present invention.
Figure 4 is a view showing the internal air flow of the cartridge filter according to an embodiment of the present invention.
Figure 5 is a view showing a modified example of the air flow guide structure of the cartridge filter according to an embodiment of the present invention.

The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another component, and unless otherwise stated, the first component may be the second component, of course.

Hereinafter, the arrangement of an arbitrary element on the "upper (or lower)" or "upper (or lower)" of a component means that an arbitrary element is placed in contact with the upper (or lower) surface of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when a component is described as "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components may be "interposed" between each component. ", or each component may be "connected", "coupled" or "connected" through other components.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

Singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps.

Throughout the specification, when "A and/or B" is used, this means A, B or A and B unless otherwise specified, and when used as "C to D", this means unless otherwise specified As long as there is no, it means C or more and D or less.

In the drawings, Figure 1 is a perspective view briefly showing a cartridge filter according to an embodiment of the present invention, Figure 2 is a view showing the internal structure of the cartridge filter according to an embodiment of the present invention. And Figure 3 is a cross-sectional view briefly showing a cartridge filter according to an embodiment of the present invention, Figure 4 is a view showing the internal air flow of the cartridge filter according to an embodiment of the present invention.

Cartridge filter 10 according to an embodiment of the present invention refers to a cartridge filter for a dust collector in which a cone-shaped airflow guide structure 400 is mounted inside the filter body 100 to uniformly adsorb dust and gas. .

1 and 4, the cartridge filter 10 according to an embodiment of the present invention includes a filter body 100, an upper cap 200, a lower cap 300, and an airflow guide structure 400. do.

The filter body 100 includes a filter cloth 110 having a pleated shape in a circumferential direction so that the air that is pressurized by the driving of the blowing fan provided in the dust collecting device flows into the cylindrical inner space and filters the inflowing air. .

The upper cap 200 is coupled to cover the open top of the filter body 100, and has an exhaust port 210 formed through the top and bottom.

The lower cap 300 is disposed in parallel with the upper cap 200 at a predetermined distance above and below, and is coupled to cover the open lower portion of the filter body 100.

The airflow guide structure 400 may be provided to protrude from the inside of the filter body 100 toward the exhaust port 210 .

Specifically, as shown, the exhaust port 210 may be formed to penetrate vertically from the inner center of the upper cap 200 .

Also, the air flow guide structure 400 may protrude in a cone shape toward the exhaust port 210 from the inside of the filter body 100 .

When air is injected through a blower fan in the dust collector, the air sucked into the filter body 100 is directed to a position closer to the upper cap 200, more specifically, the exhaust port 210, the faster the air flow rate. phenomenon occurs.

Due to this difference in flow velocity, in the case of the conventional cylindrical filter body 100, the flow is introduced into the filter body 100 from the upper part (ie, the part close to the upper cap) and the lower part (ie, the part close to the lower cap) There is a problem in that dust and gas adsorption is not made uniformly due to a large difference in flow rate of air being generated.

In other words, when the outside air of the filter body 100 is sucked into the inner space of the filter body 100 by operating the blowing fan, the air gets closer to the exhaust port 210 located at the top center of the filter body 100. There is a phenomenon in which adsorption of dust and the like is concentrated as the air is strongly introduced and the wind power of the air increases, and there is a problem in that a load is generated while the pressure at the upper end of the filter body 100 is rapidly increased.

Cartridge filter 10 according to an embodiment of the present invention is a cartridge filter that can be used in a dust collector that injects air through a blowing fan, and the cone-shaped air flow guide structure 400 is disposed inside the filter body 100 It enables dust and gas adsorption to be made uniformly.

The cone-shaped airflow guide structure 400 is a cone-shaped structure that protrudes from the inner lower end (ie, lower cap) to the upper end (ie, upper cap) of the filter body 100 toward the center of the exhaust port, and controls the air flow. It serves as an airflow guide.

As shown, the cone-shaped air flow guide structure 400 is mounted inside the filter body 100, so that the inner cross section of the filter body 100 goes from the top to the bottom of the filter body 100 (that is, the flow of air cross section) may have a structure in which it is gradually reduced. Accordingly, the difference in flow velocity between the upper and lower portions of the filter body 100 can be reduced, and a uniform flow of air can be obtained, and as a result, dust and gas adsorption on the entire length of the filter body 100 can be achieved. Features can be greatly improved.

Specifically, as shown in FIG. 3, the cone-shaped air flow guide structure 400 has one end (or upper end) fixed to the upper surface of the lower cap 300, and the other end (or lower end) of the It may protrude in a cone shape toward the upper cap 200 . In particular, the protruding cone-shaped tip (ie, a pointed portion) of the air flow guide structure 400 may be concentric with the center of the exhaust port 210 .

When the cone-shaped airflow guide structure 400 is fixed to the upper surface of the lower cap 300 and the tip of the cone is concentric with the center of the exhaust port 210, the airflow guide structure 400 rides The flowing air flows smoothly through the entire upper and lower portions of the filter body 100 and can be stably discharged through the exhaust port 210 . As described above, according to the embodiment of the present invention, the flow of air becomes smooth and the dust and gas adsorption becomes uniform through the entire section of the filter body 100, so that the conventional dust and gas adsorption is non-uniform due to the difference in flow rate for each section. can solve the problem of

Meanwhile, an exhaust outlet extension pipe 220 extending upward to a predetermined length in communication with the exhaust outlet 210 may be further provided at an upper end of the upper cap 200 .

The exhaust port extension pipe 220 has the same diameter as the exhaust port 210 and extends the passage through which air is discharged, and allows air to be discharged stably at a constant flow rate.

Further, a flange 230 having an expanded diameter may be provided at an upper portion of the exhaust outlet extension pipe 220 .

The flange 230 is formed on the upper part of the exhaust outlet extension pipe 220 to facilitate connection with other devices.

Hereinafter, referring to FIG. 5, a modification of the air flow guide structure 400 of the cartridge filter 10 according to an embodiment of the present invention will be described.

Referring to FIG. 5 , the illustrated airflow guide structure 400 may include a cone-shaped body 410 having a lighter weight structure.

The cone-shaped body 410 protrudes in a cone shape from the inside of the filter body 100 toward the exhaust port 210, and may have an empty interior space. Through such a structure, it is possible to realize weight reduction of the cartridge filter 10 and has the advantage of reducing material cost.

In addition, the shown air flow guide structure 400 includes a cone-shaped body 410 capable of reducing weight, as well as securing the structural strength of the cone-shaped body 410 from the air pressure applied to the cone-shaped body 410 can have a structure.

The air flow guide structure 400 includes a cone-shaped body 410, a central support part 420, and a radial support part 430.

The cone-shaped body 410 protrudes in a cone shape from the inside of the filter body 100 toward the exhaust port 210, and may have an empty interior space.

The central support part 420 may be connected along the center of the height of the cone-shaped body 410 .

The radial support part 430 may be radially connected between the central support part 420 and the inner wall surface of the cone-shaped body 410 .

The cone-shaped airflow guide structure 400 may have a cross section filled with an inside (see FIG. 3 ), and as another embodiment, may be provided with a structure having a cone-shaped body 410 having an empty inner space.

However, the cone-shaped body 410 provided with an empty inner space may have weak durability due to the pressure of air sucked from the outside to the inside of the filter body 100 .

In order to reinforce this, the central support 420 serves to connect and support the center of the cone-shaped body 410 vertically, and the radial support 430 is provided between the central support 420 and the inner wall of the cone-shaped body 410. It serves as a support by connecting them in the horizontal direction.

Preferably, a threaded fastening protrusion 424 is provided at the lower end of the center support 420, and the upper end 421 of the center support 420 is inserted through a hole 415 provided in the cone-shaped body 410. An insertion shaft 422 is provided, and a fastening groove 310 into which the fastening protrusion 424 is fastened and fixed may be provided at the inner center of the lower cap 300 .

According to this configuration, the central support 420 is pre-installed at the inner center of the lower cap 300, the radial support 430 is connected to the central support 420 in a direction crossing, and then the cone-shaped body 410 is formed. The center support 420 and the radial support 430 may be covered and combined. Accordingly, considering the vertical length and cross-sectional size of the filter body 100, the cone-shaped body 410 of various sizes and shapes can be replaced as needed, and it is easy to partially replace the cone-shaped body 410 when it is damaged. There is one advantage.

In addition, as the lower end of the center support 420 is firmly screwed into the fastening groove 310 provided at the inner center of the lower cap 300 by a set length, the front end of the cone-shaped body 410 extends through the exhaust port 210. It is possible to maintain the position and posture of the airflow guide structure 400 as it is in the initial installation form by forming the same center as the center, so that a stable exhaust flow of the intake air can be induced.

In addition to this, a cone tip support 450 may be further included. The cone front support 450 fixes the front end of the cone body 410 around the exhaust port 210 so that the front end of the cone body 410 can continuously and firmly maintain the posture of having the same center as the center of the exhaust port 210. can do. For example, the front end of the cone-shaped body 410 may be fixed around the exhaust port 210 using a wire material that does not interfere with air flow.

In addition, a sealing joint 415 may be further provided between the lower end of the cone-shaped body 410 and the upper surface of the lower cap 300 (see FIG. 5 ).

The sealing joint 415 not only firmly joins the joint between the cone-shaped body 410 and the lower cap 300, but also seals the joint so that the air sucked into the inner space of the filter body 100 passes through the cone-shaped body ( 410) may serve to block inflow into the inner empty space. Thus, lifting or vibration and noise of the air flow guide structure 400 can be prevented in advance.

In addition, on the outer surface of the cone-shaped body 410, the air introduced into the inner space of the filter body 100 flows along the outer surface of the cone-shaped body 410 and induces the discharge of air toward the exhaust port 210. A guide groove 411 may be further provided (see FIG. 3).

At least one guide groove 411 may be provided on an outer surface of the cone-shaped body 410 for guiding air flow.

For example, the guide groove 411 may be a straight-line groove formed on the outer surface of the cone-shaped body 410 at predetermined intervals. Air may flow along the outer surface of the cone-shaped body 410 along the groove in the shape of a straight line and be stably discharged through the exhaust port 210 .

As another example, the guide groove 411 may be a spiral groove formed along the outer surface of the cone-shaped body 410 toward the tip of the cone. The spiral groove allows air taken into the inner space of the filter body 100 to be more stably discharged toward the exhaust port 210 while flowing along the outer surface of the cone-shaped body 410 .

As described above, according to the configuration and operation of the present invention, dust and gas adsorption can be made uniform by mounting the cone-shaped air flow guide structure inside the cartridge filter.

Specifically, according to the present invention, dust and gas adsorption can be made uniform by improving the structure of a cartridge filter usable in a dust collector. In particular, a cone-shaped air flow guide structure protruding from the lower inner side of the cartridge filter toward the center of the upper exhaust port is mounted. Accordingly, by providing a structure in which the inner cross section of the filter (ie, the air flow cross section) is gradually reduced from the top to the bottom of the filter, dust and gas adsorption between the upper and lower parts of the filter can be smoothly performed. .

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed herein, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although some embodiments of the present invention have been described above and the operational effects according to the configuration of the present invention have not been explicitly described and described, it is natural that the effects predictable by the corresponding configuration should also be recognized.

10: cartridge filter
100: filter body
110: filter cloth
200: upper cap
210: exhaust port
220: exhaust pipe
230: flange
300: lower cap
310: fastening groove
400: air flow guide structure
410: cone body
411: guide groove
415: joint
420: central support
421: upper part of the center support
422: insertion axis
424: fastening protrusion
430: radial support
450: cone tip support

Claims (4)

A filter body 100 including a filter cloth 110 having a pleated shape in a circumferential direction so that external air pressured by the driving of a blowing fan provided in the dust collector flows into the cylindrical inner space and filters the inflowing air. ;
an upper cap 200 coupled to cover the open top of the filter body 100 and having an exhaust port 210 penetrating the top and bottom; and
A cartridge filter including a lower cap 300 disposed in parallel with the upper cap 200 vertically at a predetermined distance and coupled to cover the open lower part of the filter body 100,
An air flow guide structure 400 provided to protrude from the inside of the filter body 100 toward the exhaust port 210; further comprising,
The airflow guide structure 400,
Cartridge filter, characterized in that protrudes in a cone shape toward the exhaust port (210) from the inside of the filter body (100).
According to claim 1,
The exhaust port 210,
Characterized in that it is formed by penetrating vertically from the inner center of the upper cap 200
cartridge filter.
According to claim 1,
The cone-shaped airflow guide structure 400,
One end is fixed to the upper surface of the lower cap 300,
Characterized in that the other end protrudes in a cone shape toward the upper cap 200
cartridge filter.
According to claim 1,
The airflow guide structure 400,
a cone-shaped body 410 protruding from the inside of the filter body 100 toward the exhaust port 210 in a cone shape and provided with an empty inner space;
Cartridge filter comprising a.

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