US20070022696A1 - Panel for maintaining high pressure strength at any point - Google Patents

Panel for maintaining high pressure strength at any point Download PDF

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Publication number
US20070022696A1
US20070022696A1 US11/234,327 US23432705A US2007022696A1 US 20070022696 A1 US20070022696 A1 US 20070022696A1 US 23432705 A US23432705 A US 23432705A US 2007022696 A1 US2007022696 A1 US 2007022696A1
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US
United States
Prior art keywords
sub
panel
section
rim
strength panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/234,327
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English (en)
Inventor
Chae-Won Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Hae Kwang Co Ltd
Original Assignee
Hae Kwang Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37271098&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20070022696(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hae Kwang Co Ltd filed Critical Hae Kwang Co Ltd
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, CHAE-WON
Assigned to HAE KWANG CO., LTD. reassignment HAE KWANG CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, CHAE-WON
Publication of US20070022696A1 publication Critical patent/US20070022696A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • F24F3/167—Clean rooms, i.e. enclosed spaces in which a uniform flow of filtered air is distributed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/40—HVAC with raised floors

Definitions

  • the present invention relates to a high-strength panel for use as flooring in a clean facility, such as a semiconductor clean room.
  • a clean room in which a variety of special experimental and production equipment are mounted utilizes a double flooring system.
  • clean rooms include a production room for highly integrated circuits such as semiconductors and a genetic engineering laboratory.
  • the double flooring system is constructed with a predetermined height in order to uniformly distribute the load of the variety of special equipment while effectively absorbing and removing exterior dust particles, fine particulates, and the like to thereby prevent the generation of cracks or depressions in the floor even when the load is concentrated on a specific location of the double flooring system.
  • the double flooring system may include a porous panel possessing a number of fine pores.
  • An underside of the porous panel forms a floor having a supporting structure. Due to a variety of exhaust devices and cable equipment being mounted underneath the floor, the floor, being the bottom surface of a semiconductor clean room, must be spaced apart from the ground by a certain constant height. Considering the size of the exhaust devices and cable equipment and other various conditions, the installation height of the floor must have variability.
  • FIGS. 1 and 2 illustrate a structure of a conventional bottom panel for use in a clean room.
  • the conventional bottom panel 2 comprises a rim portion 202 formed along the rim of a lower surface of the panel, wherein the rim portion 202 has a plurality of rectangular recesses.
  • the convention bottom panel 2 also comprises a plurality of square lattice sections 204 defined inside the rim portion 202 .
  • the conventional bottom panel 2 further comprises a main reinforcing rib 206 , which serves as a partition between the lattice sections 204 .
  • the main reinforcing rib 206 has a predetermined height.
  • a plurality of circular recesses 208 are vertically and horizontally formed at a bottom surface of the panel 2 sectionalized by the main reinforcing rib 206 .
  • the circular recesses 208 respectively adjacent to one another are interconnected by vertical and horizontal bars 210 so that octagonal recesses 212 are defined in spaces therebetween.
  • the conventional bottom panel having the above described configuration is problematic because the bottom panel is easily warped or damaged by shock or vibration when a variety of heavy equipment is directly disposed on an upper surface of the bottom panel.
  • the bottom panel is exposed to a vertical load transmitted from the heavy equipment to the upper surface thereof, and an eccentric load when the equipment is gathered at a specific location on the panel, the vertical and eccentric loads tend to be concentrated on the circular recesses 208 , the circular recess connecting bars 210 and the octagonal recesses 212 between the respective adjacent circular recesses 208 .
  • each lattice section 204 defined by the main reinforcing rib 206 , has relatively large vertical and horizontal lengths and the plurality of circular recesses 208 is distributed in the lattice section 204 , if the vertical load and lateral eccentric load are transmitted to the center of the lattice section 204 , the circular recesses 208 and the octagonal recesses 212 , located at the center of the lattice section 204 , will be incapable of withstanding such load, thus causing the generation of damage and cracks.
  • the present invention is directed to a high-strength panel for use as flooring in a clean facility, such as a semiconductor clean room.
  • the present invention is embodied in a high-strength panel comprising rim ribs formed at respective rim portions of the panel and each provided with a tapered surface to have a downwardly increasing thickness, a main reinforcing rib serving as a partition to divide an interior space defined by the rim portions into a plurality of square lattice sections, a plurality of auxiliary reinforcing ribs arranged in a respective one of the square lattice sections to divide the square lattice section into 4 rows and 4 columns, i.e. into sixteen sub-sections, and a plurality of circular recesses formed at a bottom layer of each sub-section defined by the auxiliary reinforcing ribs, whereby the panel achieves an enhancement in supporting force resistant to vertical load and eccentric load applied thereto.
  • the rim portions are centrally formed with a predetermined number of rim lattice sections, and each rim lattice section is divided into four sub-sections by the auxiliary reinforcing ribs.
  • the circular recesses, formed at a lower surface of the sub-section defined by the auxiliary reinforcing ribs, are surrounded by circular ribs, respectively.
  • a high-strength panel for enhancing a supporting force for resisting a vertical load and an eccentric load applied thereto comprises a plurality of square lattice sections formed by a plurality of main reinforcing ribs intersecting one another, a plurality of auxiliary reinforcing ribs formed in each of the plurality of square lattice sections, wherein the plurality of auxiliary reinforcing ribs are arranged to divide each square lattice section into sub-sections, and a plurality of circular ribs formed in each sub-section, wherein each circular rib has a circular recess.
  • the high-strength panel further comprises rim ribs formed at edges of the high-strength panel.
  • a height of the plurality of auxiliary reinforcing ribs is one-half a height of the plurality of main reinforcing ribs.
  • a height of the plurality of auxiliary reinforcing ribs is one-half to one-third a height of the plurality of main reinforcing ribs.
  • the plurality of auxiliary reinforcing ribs divides each square lattice section into sixteen sub-sections of four rows and four columns.
  • the circular recesses are formed in a 2 ⁇ 2 array in each sub-section, diagonally aligned in each sub-section, and arranged in each sub-section to define a diamond-shaped supporting recess in the center of the sub-section. A diagonal length of the diamond-shaped recess is shorter than a diameter of the circular recess.
  • the rim ribs are respectively formed at rim portions of the high-strength panel. Moreover, the rim ribs comprise a tapered surface having a downwardly increasing thickness. Preferably, the rim portions are formed with a predetermined number of rim lattice sections, wherein each rim lattice section is divided into four sub-sections by the auxiliary reinforcing ribs.
  • a high-strength panel for enhancing a supporting force for resisting a vertical load and an eccentric load applied thereto comprises a plurality of square lattice sections formed by a plurality of main reinforcing ribs intersecting one another, a plurality of auxiliary reinforcing ribs formed in each of the plurality of square lattice sections, wherein the plurality of auxiliary reinforcing ribs are arranged to divide each square lattice section into sub-sections, a plurality of circular recesses formed in a 2 ⁇ 2 array in each sub-section, and rim ribs respectively formed at rim portions of the high-strength panel.
  • the circular recesses are diagonally aligned in each sub-section and are arranged in each sub-section to define a diamond-shaped supporting recess in the center of the sub-section.
  • the rim ribs comprise a tapered surface having a downwardly increasing thickness.
  • FIG. 1 is a bottom view of a conventional panel for use in a clean room.
  • FIG. 2 is an enlarged perspective view illustrating a portion of the conventional panel of FIG. 1 .
  • FIG. 3 is a bottom view of a high-strength panel for use in a clean room in accordance with one embodiment of the present invention.
  • FIG. 4 is an enlarged perspective view illustrating a portion of the high-strength panel of FIG. 3 in accordance with one embodiment of the present invention.
  • FIG. 5 is a plan view of FIG. 4 in accordance with one embodiment of the present invention.
  • FIG. 6 is a sectional view of the high-strength panel in accordance with one embodiment of the present invention.
  • FIG. 7 is an enlarged view of FIG. 3 in accordance with one embodiment of the present invention.
  • FIG. 8 is a sectional view taken along line A-A of FIG. 7 in accordance with one embodiment of the present invention.
  • the present invention relates to a high-strength panel for enhancing a supporting force for resisting a vertical load and an eccentric load applied thereto.
  • FIG. 3 is a bottom view of a high-strength panel for use in a clean room.
  • FIG. 4 is an enlarged perspective view illustrating a portion of the high-strength panel of FIG. 3 .
  • FIG. 5 is a plan view of FIG. 4 in accordance with one embodiment of the present invention.
  • FIG. 6 is a sectional view of the high-strength panel.
  • FIG. 7 is an enlarged view of FIG. 3 .
  • FIG. 8 is a sectional view taken along line A-A of FIG. 7 in accordance with one embodiment of the present invention.
  • rim ribs 316 which form rim portions 302 of a high-strength panel 30 (as shown in FIGS. 3 and 6 ), have increased thickness as compared to a conventional panel.
  • Each rim rib 316 further has a tapered surface.
  • the rim ribs 316 of the rim portions 302 which support four corners of the panel 30 , are reinforced in consideration of a higher height of the ribs. Accordingly, resistance against initial deformation is increased. Moreover, because of a thicker thickness of the ribs, critical strength to sustain a breaking load is enhanced. Also, the presence of the tapered surface allows the rim ribs 316 to achieve a uniform initial deformation value and breaking strength at any location thereof.
  • a plurality of auxiliary reinforcing ribs 307 as shown in FIGS. 3, 4 , 6 and 8 are arranged in respective lattice sections defined by a main reinforcing rib 306 .
  • the auxiliary reinforcing ribs 307 have half the height of the main reinforcing rib 306 , and are arranged to divide a respective one of the lattice sections into 4 rows and 4 columns. That is, each lattice section defined by the main reinforcing rib 306 is divided into sixteen sub-sections by the auxiliary reinforcing ribs 307 .
  • each sub-section defined by the auxiliary reinforcing ribs 307 , is formed at a lower surface thereof with circular recesses 308 in a 2 ⁇ 2 array.
  • the circular recesses 308 are diagonally aligned to minimize the area of a recess defined therebetween.
  • a circular rib 314 surrounds each circular recess 308 , as shown in FIGS. 4, 7 and 8 .
  • the panel 30 of the present invention achieves an enhanced supporting force resistant to the vertical and eccentric loads and prevents a degradation of the supporting force at a specific location thereof.
  • the plurality of circular recesses 308 which are surrounded by the respective circular ribs 314 , are formed at a bottom layer 310 of each sub-section defined by the respective auxiliary reinforcing ribs 307 .
  • the height of the auxiliary reinforcing ribs 307 is preferably approximately 1 ⁇ 2 to 1 ⁇ 3 the height of the main reinforcing rib 306 .
  • Such a height of the auxiliary reinforcing ribs 307 is determined in consideration of the material costs of the entire panel as well as a panel supporting force effective to resist the vertical and eccentric loads. Thus, an excessively high height of the auxiliary reinforcing ribs 307 beyond the above range is economically undesirable because it results in an increase in the price of products.
  • the circular recesses 308 formed at the lower surface of the high-strength panel 30 , are diagonally spaced apart, rather than being vertically and horizontally spaced apart, from one another.
  • the respective adjacent four circular recesses 308 in a 2 ⁇ 2 array define a diamond-shaped supporting recess 312 in the center thereof.
  • the diamond-shaped supporting recess 312 is better at enhancing the supporting force while keeping the original shape of the circular recesses 308 .
  • a diagonal length of the diamond-shaped recess 312 is shorter than a diameter of the circular recess 308 .
  • the rim portions 302 of the supporting panel 30 are centrally formed with a predetermined number of rim lattice sections 303 , as shown in FIGS. 3 and 6 .
  • Each of the rim lattice sections 303 contains the auxiliary reinforcing ribs 307 which divide the lattice section 303 into four sub-sections.
  • the high-strength panel of the present invention is configured such that rim ribs are formed along the rim of the panel and a plurality of auxiliary reinforcing ribs are arranged in a respective one of lattice sections defined by a main reinforcing rib so as to provide the entirety of the panel with a supporting force for effectively increasing the strength of the panel resistant to a concentrated load.
  • a plurality of circular recesses is formed at a lower surface of the panel and is surrounded by circular ribs, respectively, it is possible to effectively support vertical and eccentric loads applied to the entirety of the panel while preventing the downwardly applied load from being concentrated at a specific location of the panel by distributing the load throughout the panel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Floor Finish (AREA)
US11/234,327 2005-07-29 2005-09-23 Panel for maintaining high pressure strength at any point Abandoned US20070022696A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050069402A KR100649140B1 (ko) 2005-07-29 2005-07-29 고강도 패널
KR2005-69402 2005-07-29

Publications (1)

Publication Number Publication Date
US20070022696A1 true US20070022696A1 (en) 2007-02-01

Family

ID=37271098

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/234,327 Abandoned US20070022696A1 (en) 2005-07-29 2005-09-23 Panel for maintaining high pressure strength at any point

Country Status (6)

Country Link
US (1) US20070022696A1 (ko)
JP (1) JP2007040090A (ko)
KR (1) KR100649140B1 (ko)
MY (1) MY144859A (ko)
SG (1) SG129346A1 (ko)
TW (1) TW200704857A (ko)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100307090A1 (en) * 2007-10-23 2010-12-09 Mehdi Hatamian Modular building system
US20120080269A1 (en) * 2010-10-04 2012-04-05 Ardisam, Inc. Load-bearing platform
US8794383B2 (en) 2012-01-09 2014-08-05 Rivers Edge Tree Stands, Inc. Ladder stand

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010018970A (ja) * 2008-07-09 2010-01-28 Miyazono Seisakusho:Kk 瓦及び瓦の製造方法
US9206559B2 (en) * 2013-03-12 2015-12-08 Reynolds Presto Products Inc. Mat, portable porous construction mat system, tools, and methods
KR101866481B1 (ko) * 2016-06-09 2018-06-12 주식회사 서호 이중 마루시스템용 바닥패널
KR101871818B1 (ko) 2017-02-20 2018-06-27 주식회사 에스비테크 클린룸용 이중바닥 패널
KR101871821B1 (ko) 2017-02-20 2018-06-27 주식회사 에스비테크 클린룸용 이중바닥 패널
KR102584041B1 (ko) 2023-06-02 2023-10-05 주식회사 에스앤와이시스템 이중바닥재용 패널

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825603A (en) * 1987-03-23 1989-05-02 Farley, Inc. Elevated floor plate
US5402617A (en) * 1990-02-01 1995-04-04 Daw Technologies, Inc. Floor panel for industrial cleanroom
US6155013A (en) * 1998-09-23 2000-12-05 Hae Kwang Co., Ltd. Floorboard for clean rooms
US6519902B1 (en) * 2001-10-05 2003-02-18 Maxcess Technologies, Inc. Heavy-duty floor panel for a raised access floor system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0967922A (ja) * 1995-08-30 1997-03-11 Meiji Rubber & Chem Co Ltd 床パネル
AU8823198A (en) * 1997-07-28 1999-02-16 Interface, Inc. Perforated raised flooring panel
JP3565692B2 (ja) * 1997-09-19 2004-09-15 近代都市開発株式会社 孔明床パネルの製法
KR100603887B1 (ko) * 2003-07-28 2006-07-24 주식회사 맥시 토와 프리 액세스 바닥용 기본 패널

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825603A (en) * 1987-03-23 1989-05-02 Farley, Inc. Elevated floor plate
US5402617A (en) * 1990-02-01 1995-04-04 Daw Technologies, Inc. Floor panel for industrial cleanroom
US6155013A (en) * 1998-09-23 2000-12-05 Hae Kwang Co., Ltd. Floorboard for clean rooms
US6519902B1 (en) * 2001-10-05 2003-02-18 Maxcess Technologies, Inc. Heavy-duty floor panel for a raised access floor system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100307090A1 (en) * 2007-10-23 2010-12-09 Mehdi Hatamian Modular building system
US20120080269A1 (en) * 2010-10-04 2012-04-05 Ardisam, Inc. Load-bearing platform
US8997933B2 (en) * 2010-10-04 2015-04-07 Ardisam, Inc. Load-bearing platform
US8794383B2 (en) 2012-01-09 2014-08-05 Rivers Edge Tree Stands, Inc. Ladder stand

Also Published As

Publication number Publication date
TW200704857A (en) 2007-02-01
JP2007040090A (ja) 2007-02-15
MY144859A (en) 2011-11-30
KR100649140B1 (ko) 2006-11-27
KR20050088050A (ko) 2005-09-01
SG129346A1 (en) 2007-02-26

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Date Code Title Description
AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, CHAE-WON;REEL/FRAME:017035/0115

Effective date: 20050822

AS Assignment

Owner name: HAE KWANG CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, CHAE-WON;REEL/FRAME:017350/0389

Effective date: 20050822

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE