KR20110111120A - Filter device with gel gasket - Google Patents

Abstract

Between the two spaces in contact with both sides of the filter medium to be filtered through the air, the filter frame surrounding the outer portion of the filter medium, and the filter frame is fixed in the contaminated space that one side of the filter medium is in contact with It includes a filter box through which air passes through, and a gasket in the form of a gel which is located between the filter frame and the filter box to prevent leakage of air between the clean space and the contaminated space that the other side of the filter medium contacts. Provide a filter device. According to the filter device according to the present invention, by installing a gasket in the form of a gel in the air conditioning HEPA filter, it is possible to effectively suppress air leakage to the outside of the filter device to effectively remove fine dust and the like in the air.

Description

Filter device with gel type gasket {FILTER APPARATUS WITH GEL-TYPE GASKET}

The present invention relates to a filter arrangement, more particularly an air conditioning filter arrangement comprising a gasket in the form of a gel.

The air duct connected to the clean room is equipped with various types of filters for collecting the particulate contaminants and the biological contaminants. The contaminants are collected by the filter to maintain a clean state inside the clean room. The filter may be a pre-filter, a medium filter, a high-efficiency particulate air filter, a HEPA filter, and an ultra low-penetration air filter for the purpose of preventing contamination by the pollutants. , ULPA Filter) and the like, and the HEPA filter is the most widely used.

In general, the HEPA filter has a 99.9% removal efficiency for suspended particles ranging from 0.001 um to several um and a minimum removal efficiency of at least 99.97% for 0.3 um sized dust, the largest permeable particle exhibiting the highest efficiency. have.

HEPA filters are used in clean room equipment to remove fine dust from the air to prevent product quality improvement and contamination in the manufacturing process of electronic components or pharmaceuticals. Contaminants, including particulate contaminants such as fine dust and biological contaminants such as microorganisms, adversely affect drug quality in the pharmaceutical manufacturing process. Therefore, since the defects of the medicines can be caused by the fine contaminants in the workplace where the medicine is manufactured, the cleanness index in the workplace is strictly managed, so that microorganisms in addition to the fine dust in the air can be removed, and thus the pharmaceutical, medical, food manufacturing processes, etc. It is used to maintain environmental conditions of clean room such as clean room where absolutely cleanliness is absolutely necessary.

The first condition for obtaining clean space is air filtration. HEPA filters used for filtration of air in cleanrooms require greater than 99.97% removal efficiency for 0.3 um particles in terms of regulations, but greater than 99.99% removal efficiency for quality control.

In addition, the leak rate must be less than 0.01% as a result of the scan test, and the same efficiency is required in the leak test after the filter is mounted in the field. If any leaks are found as a result of a scan test, these parts must be repaired. In particular, the HEPA filter is subject to breakage in the media or adhesive areas due to long-distance transport. Therefore, the HEPA filter needs to be installed on-site and then subjected to field inspection to prove the performance of the product.

However, when the HEPA filter, which has an efficiency of 99.97%, is installed in the filter frame of the air pipe by the conventional clamping method, air contaminated by the gap caused by the incomplete adhesion between the filters and the HEPA filter does not pass through the HEPA filter. Instead, the filter may pass through a gap and cause a decrease in filter efficiency, and a clamp may be released from the vibration during operation, causing a gap between the filter and the filters, thereby causing leakage. In this way, great care must be taken when installing the HEPA filter to the filter housing to prevent air leakage.

1 is a schematic cross-sectional view for explaining a hepa filter device according to the prior art. When the filter device is installed at the inlet through which air is introduced, a neoprene sponge-shaped gasket 30 is inserted between the filter box 20 and the HEPA filter media 10, and the HEPA filter media 10 is connected to the filter box 20. ) And secures the HEPA filter media 10 through the holder 40.

However, even if the neoprene sponge-like gasket 30 and the holder 40 is in close contact and fixed, a small amount of leakage may occur depending on the installation state, which is a costly and timely test that requires continuous performance testing. It has the disadvantage of causing loss.

The present invention has been made to solve the above problems, an object of the present invention is to provide a filter device that can effectively remove the fine dust in the air by suppressing the air leakage to the outside of the filter device to the maximum. .

One aspect of the present invention, the filter medium that the air is passed through the two spaces between the two sides in contact with each other, the filter frame surrounding the outer portion of the filter media, and located in the contaminated space that one side of the filter media The filter frame is fixed to the filter box through which the air passes through, and is located between the filter frame and the filter box to prevent the leakage of air between the clean space and the contaminated space that the other side of the filter media contact Provided is a filter device comprising a gasket in the form of a gel.

The protruding frame of the filter box may be inserted into the gasket and fixed to be detachable.

The filter box may be formed with a test opening connecting the two spaces. The test opening may be formed with an injection opening through which an aerosol can be injected and a measurement opening through which the distribution of the aerosol can be measured.

The filter box has a protruding frame formed in a shape in which “d” is divided, and one end of the protruding frame is inserted into and fixed to the gasket, and between the two spaces in a concave portion of the “d” close to the one end. Test openings may be formed to connect.

The filter media may be a hepa filter media that removes fine dust in the air.

The gasket may be a gasket in the form of an insulating silicone gel.

Another aspect of the present invention, the filter media that is passed through the air filter between the two spaces and the side is fixed to the filter box is located in the contaminated space surrounded by the outer side of the filter media and the one side of the filter media And a filter frame which is provided on the filter frame and a gel type gasket contacting the filter box so as to prevent leakage of air between the clean space and the contaminated space provided with the other side of the filter medium. do.

The filter media may be a hepa filter media that removes fine dust in the air.

The protruding frame of the filter box may be inserted into and fixed to the gasket.

According to the filter device according to the present invention, by installing a gasket in the form of a gel in the air conditioning HEPA filter, it is possible to effectively suppress air leakage to the outside of the filter device to effectively remove fine dust and the like in the air.

In addition, the gel type, which is almost impossible to permeate the air, prevents the gap and strongly adheres to the filter medium or the filter frame and the filter box, thereby ensuring stable and reliable.

Furthermore, the filter device according to the present invention includes a test opening for checking whether a leak occurs in the periphery of the HEPA filter, thereby facilitating the performance test of the filter and simplifying maintenance.

1 is a cross-sectional view schematically showing the structure of a hepa filter device according to the prior art.
2 is a cross-sectional view schematically showing the structure of a filter device according to an embodiment of the present invention.
3 is a cross-sectional view showing a test method for a filter device according to an embodiment of the present invention.
4 is a perspective view showing a test method for the filter device according to an embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that detailed descriptions of related well-known technologies or functions may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

DETAILED DESCRIPTION Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components will be given the same reference numerals and redundant description thereof will be omitted. do.

Embodiment of the present invention, it is possible to provide a HEPA Filter (High Efficiency Particulate Air Filter) device having a mounting insulating silicone gel (Silicone Dielectric Gel) type gasket to prevent dust leakage in the air pipe.

2 is a cross-sectional view schematically showing the structure of a filter device according to an embodiment of the present invention.

One embodiment of the present invention, the filter medium 110 through which air is passed and filtered between two spaces in contact with both sides, the filter frame 112 surrounding the outside of the filter medium 110, and the filter medium ( One side of the filter 110 is located in the contaminated space, the filter frame 112 is fixed and the air is passed through the filter box 120, located between the filter frame 112 and the filter box 120 filter It provides a filter device comprising a gasket 130 of the gel form to prevent the leakage of air between the clean space and the contaminated space that the other side of the filter medium 110 is in contact.

Embodiment according to another aspect of the present invention, without the filter box 120 as a component, the filter device including a filter medium 110, a filter frame 112, and a gasket 130 in the form of a gel to provide. The filter device according to another embodiment may be formed to be detachable from the filter box 120 installed in the air pipe.

The filter media 110 may be a hepa filter media that removes fine dust in the air. The HEPA filter has a 99.9% removal efficiency for suspended particles ranging from 0.001 um to several um, and can have a removal efficiency of at least 99.97% even for 0.3 um sized dust, which is the largest permeable particle exhibiting the highest efficiency.

Gasket 130 may be a gasket in the form of an insulating silicone gel. The gasket 130 prevents leakage from gaps between the components of the filter device by external vibration or incomplete contact method and facilitates replacement of the filter.

The filter box 120 may have four sides. The protruding frame 122 of the filter box 120 may be inserted into and fixed to the gasket 130 having a gel form. The filter box 120 has a protruding frame 122 formed in a shape in which “d” is laid, and one end of the protruding frame 122 may be inserted into the gasket 130 and fixed to be detachable. When the frame 122 protruding from the four sides of the filter box 120 is inserted into the insulating silicone gel, the inflow / outflow port through which air flows in and out and the leaks that may occur around the HEPA filter are removed, so that only the filter media Only through 110 may air enter and exit.

Test openings 124, 126 connecting between the two spaces may be formed in the filter box 120. The test openings 124 and 126 can be used as injection openings through which aerosols can be injected and measurement openings through which the distribution of aerosols can be measured. Test openings 124 and 126 may be formed in recesses of the letter “d” near one end.

3 is a cross-sectional view showing a test method for a filter device according to an embodiment of the present invention. 4 is a perspective view showing a test method for the filter device according to an embodiment of the present invention.

The test sequence for the leakage performance of the filter device is as follows. First, an aerosol is injected into the injection opening 124 using an aerosol generator and an injection nozzle 144. Next, when the aerosol distribution of 20 mg / m3 to 80 mg / m3 is confirmed by checking the aerosol distribution of the upper part of the filter using the measuring opening 126 and the measuring nozzle 146, the injected aerosol concentration is referred to as a reference value, For example, set it to 100%. Next, the aerosol leaked to the lower part of the filter device is checked by using the scanning probe 148. When the air particle permeability reaches 99.97%, which is the efficiency of the HEPA filter, the filter device has no leak and satisfactory degree. It can be determined that it is installed.

[Equation 1]

Permeability of air particles (%) = lower air particle concentration X 100 / upper air particle concentration

Thus, the filter device according to the embodiment of the present invention, by installing a hepa filter having a gel-type gasket at the inlet in which air is introduced, it prevents the leakage (leak) generation around the air inlet and the hepa filter and only hepa filter Allow air to enter only through itself. Therefore, dust and microorganisms in the air can be effectively filtered, and the workplace, which is a clean space, can be effectively prevented from being contaminated by floating particles or bacteria.

In addition, the filter device according to the embodiment of the present invention, unlike the prior art, is securely and securely secured by completely sealing between the filter media or the filter frame and the filter box without a strong contact between the components of the filter device by a clamp or a holder.

It also features a test opening that allows you to test for leaks on your own, making it easy to scan. Furthermore, the test opening is formed inside the filter box, so that the appearance is beautiful and the maintenance is simple.

As mentioned above, although specific embodiment of this invention was described, this is only an illustration and this invention is not limited to this, It should be interpreted that it has the broadest range based on the basic idea disclosed in this specification. Those skilled in the art can change the material, size, etc. of each component according to the application field, it is possible to implement a pattern of the shape not shown by combining or replacing the disclosed embodiments, but this is also not departing from the scope of the present invention. In addition, those skilled in the art can easily change or modify the disclosed embodiments based on the present specification, it is apparent that such changes or modifications are included in the scope of the present invention.

110: filter medium 112: filter frame
120: filter box 122: protruding frame
124, 126: test opening 130: gasket
144: injection nozzle 146: measuring nozzle
148: scanning probe

Claims (10)

A filter medium through which air passes and is filtered between two spaces in which both sides face each other,
A filter frame surrounding the outside of the filter medium,
A filter box which is positioned in a contaminated space in which one side of the filter medium is in contact with the filter frame, and through which air passes;
A gel gasket is disposed between the filter frame and the filter box to prevent leakage of air between the clean space where the other side of the filter medium contacts and the contaminated space.
Filter device comprising.
The method of claim 1,
The filter frame of the filter box is fixed to be inserted into the gasket detachable.
The method of claim 1,
The filter box is the filter device is formed with a test opening for connecting between the two spaces.
The method of claim 3,
And the test opening is formed with an injection opening through which an aerosol can be injected and a measurement opening through which the distribution of the aerosol can be measured.
The method of claim 1,
The filter box has a protruding frame is formed in the shape of the letter "L",
One end of the protruding frame is inserted into and fixed to the gasket,
A test opening for connecting between the two spaces is formed in the concave portion of “d” close to the one end
Filter device.
The method according to any one of claims 1 to 5,
The filter medium is a filter device that is a hepa filter media to remove fine dust in the air. The method of claim 6,
The gasket is a gasket in the form of an insulating silicone gel.
A filter medium through which air passes and is filtered between two spaces in which both sides face each other,
A filter frame surrounding an outer portion of the filter medium and fixed to a filter box located in a contaminated space where one side of the filter medium contacts;
Gel gasket in contact with the filter box to be provided in the filter frame to prevent the leakage of air between the clean space and the contaminated space that the other side of the filter medium is in contact with
Filter device comprising.
The method of claim 8,
The filter medium is a filter device that is a hepa filter media to remove fine dust in the air.
The method according to claim 8 or 9,
The protruding frame of the filter box is inserted into the gasket and fixed to the filter device.

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