US20040011797A1 - Floor plate for a cooling freight - Google Patents

Floor plate for a cooling freight Download PDF

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Publication number
US20040011797A1
US20040011797A1 US10/407,808 US40780803A US2004011797A1 US 20040011797 A1 US20040011797 A1 US 20040011797A1 US 40780803 A US40780803 A US 40780803A US 2004011797 A1 US2004011797 A1 US 2004011797A1
Authority
US
United States
Prior art keywords
plate
floor plate
cooling container
vacuum insulated
floor
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
US10/407,808
Inventor
Gunter Homes
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.)
Waggonbau Elze GmbH and Co
Original Assignee
Waggonbau Elze GmbH and Co
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
Application filed by Waggonbau Elze GmbH and Co filed Critical Waggonbau Elze GmbH and Co
Assigned to WAGGONBAU ELZE GMBH & CO BESITZ KG reassignment WAGGONBAU ELZE GMBH & CO BESITZ KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOMES, GUNTER
Publication of US20040011797A1 publication Critical patent/US20040011797A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/06—Coverings, e.g. for insulating purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/20—Refrigerated goods vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
    • B62D33/048—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains for refrigerated goods vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
    • B65D88/745—Large containers having means for heating, cooling, aerating or other conditioning of contents blowing or injecting heating, cooling or other conditioning fluid inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/022—Laminated structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/028—Wall construction hollow-walled, e.g. double-walled with spacers

Definitions

  • the present invention relates to a floor plate for a cooling container of a sandwich construction and provided with cooling passages formed by a T grating (a grating composed of T-section members) which is closed by an upper cover plate and wherein a rigid foam is provided as an insulation between the upper and lower cover plates.
  • a T grating a grating composed of T-section members
  • Such floor structures are widely used in cooling containers which are used to ship freight which must be cooled or at least prevented from excess heating. They are largely successful because they can take substantial loads and have excellent insulating properties. The insulation is primarily the rigid foam mentioned previously.
  • rigid insulating foams must comply with environmental standards, especially with respect to the use of fluorinated-chlorinated hydrocarbons. Since rigid foams have been developed, the use of fluorinated-chlorinated hydrocarbons as foaming agents for polyurethanes have been banned and products which contain such foams are increasingly being eliminated from commerce the use of fluorinated-chlorinated hydrocarbons containing foaming agents has the additional drawback that the foams which are produced are more limited in effectiveness than more recently developed commercial foams. The increased thickness which is required for the less efficient foams results in a reduction of the container volume and cooling containers with the prior foams for that disadvantage.
  • the principal object of the present invention to provide a floor plate for a cooling container, especially of the type in which the floor plate is provided with passages is a cooling medium, in which the gooseneck tunnel has substantially the same insulating effect as other regions of the floor plate.
  • Another object of the invention is to improve the insulating effectiveness of floor plates for cooling containers so that the aforementioned drawback is avoided.
  • FIG. 1 is a cross sectional view through a floor plate in the region of the gooseneck tunnel
  • FIG. 2 is a perspective view of a vacuum insulated plate which is utilized in the floor plate of FIG. 1;
  • FIG. 3 is a partial section through the vacuum insulated plate
  • FIGS. 4 and 5 are cross sectional views similar to FIG. 3 showing alternative support media for the vacuum insulated plate.
  • the floor plate 1 shown in FIG. 1 has a sandwich construction and is provided with passages two through which cooling air is forced as defined by a T grating 3 , namely, a grating composed of T-cross section bars.
  • the switch structure has an upper cover plate 4 and a lower cover plate 5 between which a rigid insulating foam 6 is provided.
  • the insulation for the floor plate 1 is provided by a vacuum insulated plate 8 .
  • This vacuum insulated plate 8 can span the entire region of the gooseneck tunnel 7 . It is fixed on the lower cover plate 5 and can extend into and be embedded in the adjoining rigid foam 6 , i.e. foamed therein.
  • the vacuum insulated plate 8 can be composed of a rectangular box structure 9 (FIG. 2) which is sealed around its edges and has an interior 10 in which a vacuum is sustained.
  • the interior may also contain a packaging medium to support the broad walls defining the interior 10 .
  • the packing 11 which is porous and can provide sufficient interstitial spaces for the vacuum to remain effective, can be composed of a low thermal conductivity material like diatamaceous earth as shown at 11 .
  • the packing material prevents collapse of the vacuum insulated plate by the prevalent atmospheric pressure acting on all sides thereof and affords mechanical strength to the vacuum insulated plate.
  • the support medium 11 can alternatively, be rock wall, a plastic grid or some other structure of low thermal conductivity, capable of supporting the walls without comprising the ability to evacuate the plate.
  • the walls of the plate can be composed of metal, e.g. stainless steel or some other material impermeable to gases.
  • FIG. 4 shows an alternative in which the support structure 12 for the vacuum insulated plate 8 is rock wool.
  • FIG. 5 shows a support structure consisting of a plastic grid 13 as the support structure for a vacuum insulated plate.

Abstract

A floor plate for a cooling container of sandwich construction in which an upper cover plate and a lower cover plate are bridged by a rigid foam. The gooseneck tunnel of the floor plate is insulated by a vacuum insulated plate which can contain a support medium and which is embedded in the surrounding foam.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a floor plate for a cooling container of a sandwich construction and provided with cooling passages formed by a T grating (a grating composed of T-section members) which is closed by an upper cover plate and wherein a rigid foam is provided as an insulation between the upper and lower cover plates. [0001]
    • BACKGROUND OF THE INVENTION
  • Floor structures for containers which are provided with cooling passages are described, for example, in DE 44 33 728A and DE 597 02 926. [0002]
  • Such floor structures are widely used in cooling containers which are used to ship freight which must be cooled or at least prevented from excess heating. They are largely successful because they can take substantial loads and have excellent insulating properties. The insulation is primarily the rigid foam mentioned previously. [0003]
  • However, rigid insulating foams must comply with environmental standards, especially with respect to the use of fluorinated-chlorinated hydrocarbons. Since rigid foams have been developed, the use of fluorinated-chlorinated hydrocarbons as foaming agents for polyurethanes have been banned and products which contain such foams are increasingly being eliminated from commerce the use of fluorinated-chlorinated hydrocarbons containing foaming agents has the additional drawback that the foams which are produced are more limited in effectiveness than more recently developed commercial foams. The increased thickness which is required for the less efficient foams results in a reduction of the container volume and cooling containers with the prior foams for that disadvantage. [0004]
  • An especially critical point with respect to the insulation is the so-called gooseneck tunnel in which the insulating layer can only have about {fraction (1/5)} of the main layer thickness for the remaining regions of the floor plate. The insulating action of the foam utilized in this region is an order of magnitude less than what is generally deemed to be necessary and hence effective insulation in the gooseneck tunnel region is a significant problem. [0005]
    • OBJECT OF THE INVENTION
  • It is, therefore, the principal object of the present invention to provide a floor plate for a cooling container, especially of the type in which the floor plate is provided with passages is a cooling medium, in which the gooseneck tunnel has substantially the same insulating effect as other regions of the floor plate. [0006]
  • Another object of the invention is to improve the insulating effectiveness of floor plates for cooling containers so that the aforementioned drawback is avoided. [0007]
    • SUMMARY OF THE INVENTION
  • These objects and others which will be apparent hereinafter are attained, in accordance with the invention by providing the region of the gooseneck tunnel as a vacuum insulated plate. [0008]
  • By providing one or more vacuum insulated plates if the insulation of the floor of the cooling container, at least in the region of the gooseneck tunnel, is significantly lower thermal transfer characteristics of the vacuum insulated plate, by comparison with rigid foams, can be utilized to increase the insulating character of the gooseneck tunnel structure so that, in the region of the gooseneck tunnel, the insulation effect is at least equal to that of the floor plate elsewhere. The vacuum maintained in the plate or plates delimiting the gooseneck tunnel, of course, accounts for the enhanced insulating effect. [0009]
  • As a consequence, despite the significantly reduced layer thickness of the insulation in the gooseneck tunnel region an insulating effect can be obtained which is equivalent to the full insulating effect elsewhere on the floor plate even in the critical region of the gooseneck tunnel. [0010]
    • BRIEF DESCRIPTION OF THE DRAWING
  • The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which: [0011]
  • FIG. 1 is a cross sectional view through a floor plate in the region of the gooseneck tunnel; [0012]
  • FIG. 2 is a perspective view of a vacuum insulated plate which is utilized in the floor plate of FIG. 1; [0013]
  • FIG. 3 is a partial section through the vacuum insulated plate; and [0014]
  • FIGS. 4 and 5 are cross sectional views similar to FIG. 3 showing alternative support media for the vacuum insulated plate.[0015]
    • SPECIFIC DESCRIPTION
  • The [0016] floor plate 1 shown in FIG. 1 has a sandwich construction and is provided with passages two through which cooling air is forced as defined by a T grating 3, namely, a grating composed of T-cross section bars. The switch structure has an upper cover plate 4 and a lower cover plate 5 between which a rigid insulating foam 6 is provided. In the region of the gooseneck tunnel 7, however, the insulation for the floor plate 1 is provided by a vacuum insulated plate 8. This vacuum insulated plate 8 can span the entire region of the gooseneck tunnel 7. It is fixed on the lower cover plate 5 and can extend into and be embedded in the adjoining rigid foam 6, i.e. foamed therein.
  • The vacuum insulated [0017] plate 8 can be composed of a rectangular box structure 9 (FIG. 2) which is sealed around its edges and has an interior 10 in which a vacuum is sustained. The interior may also contain a packaging medium to support the broad walls defining the interior 10. The packing 11, which is porous and can provide sufficient interstitial spaces for the vacuum to remain effective, can be composed of a low thermal conductivity material like diatamaceous earth as shown at 11. The packing material prevents collapse of the vacuum insulated plate by the prevalent atmospheric pressure acting on all sides thereof and affords mechanical strength to the vacuum insulated plate. The support medium 11 can alternatively, be rock wall, a plastic grid or some other structure of low thermal conductivity, capable of supporting the walls without comprising the ability to evacuate the plate. The walls of the plate can be composed of metal, e.g. stainless steel or some other material impermeable to gases.
  • FIG. 4 shows an alternative in which the [0018] support structure 12 for the vacuum insulated plate 8 is rock wool. FIG. 5 shows a support structure consisting of a plastic grid 13 as the support structure for a vacuum insulated plate.

Claims (9)

I claim:
1. A floor plate for a cooling container comprising:
a sandwich structure formed by an upper cover plate, a lower cover plate and a rigid insulating foam between said cover plates;
a T-section grating forming passages for cooling air; and
a gooseneck tunnel formed in said floor plate and insulated by a vacuum insulated plate.
2. The floor plate for the cooling container as defined in claim 1 wherein the vacuum insulated plate is fixed to the lower cover plate.
3. The floor plate for the cooling container as defined in claim 2 wherein the vacuum insulated plate is embedded in the rigid foam.
4. The floor plate for the cooling container as defined in claim 3 wherein the vacuum insulated plate is embedded by foaming the rigid foam around edges of the vacuum insulated plate.
5. The floor plate for the cooling container as defined in claim 3 wherein the vacuum insulated plate is composed of a flat rectangular box structure in an interior of which a vacuum is maintained.
6. The floor plate for the cooling container as defined in claim 5, further comprising a support medium within said box structure.
7. The floor plate for the cooling container as defined in claim 6 wherein the support medium is composed of diatomaceous earth.
8. The floor plate for the cooling container as defined in claim 6 wherein the support medium is composed of rock wool.
9. The floor plate for the cooling container as defined in claim 6 wherein the support medium is composed of plastic grid.
US10/407,808 2002-04-05 2003-04-04 Floor plate for a cooling freight Abandoned US20040011797A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215129.6 2002-04-05
DE10215129A DE10215129A1 (en) 2002-04-05 2002-04-05 Base plate, for a cool container, has a vacuum insulation plate at the gooseneck tunnel foamed into the rigid foam insulation, to give an effective insulation without the use of freons

Publications (1)

Publication Number Publication Date
US20040011797A1 true US20040011797A1 (en) 2004-01-22

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ID=28051139

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/407,808 Abandoned US20040011797A1 (en) 2002-04-05 2003-04-04 Floor plate for a cooling freight

Country Status (6)

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US (1) US20040011797A1 (en)
JP (1) JP2004003829A (en)
KR (1) KR20030079796A (en)
CN (1) CN1450329A (en)
DE (1) DE10215129A1 (en)
DK (1) DK200300506A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6960743B2 (en) 2000-12-05 2005-11-01 Ibiden Co., Ltd. Ceramic substrate for semiconductor manufacturing, and method of manufacturing the ceramic substrate
CN100560445C (en) * 2005-04-08 2009-11-18 中国国际海运集装箱(集团)股份有限公司 The bulk cargo box of band goose neck tunnel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030460B3 (en) * 2004-06-24 2005-06-30 Hans Hermann Rottmerhusen Drive motor for electric or hybrid vehicle using free-running diodes of commutation control for supplying braking energy of motor to supply current source
DE102008049613A1 (en) * 2008-09-26 2010-04-08 Absolut Komposit Gmbh & Co. Kg Grounding device for a container and method for its production
CN105644987B (en) * 2014-12-03 2018-02-02 江南造船(集团)有限责任公司 The installation method of A type independent liquid cargo tank hydrops slot insulation
CN107776684B (en) * 2017-09-05 2019-12-03 鲁东大学 A kind of haulage vehicle preventing ground heat radiation and anti-discharging method of arching one's back

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086488A (en) * 1933-12-11 1937-07-06 Kelsey Hayes Wheel Co Method of forming brake drums
US3473211A (en) * 1966-09-16 1969-10-21 Oswald J Lindell Method of forming teeth on a tubular member
US3515303A (en) * 1967-05-26 1970-06-02 A I R Air Conditioning & Refri Light refrigerator container
US4409770A (en) * 1980-02-06 1983-10-18 Genbee Kawaguchi Vacuum insulation spacer
US4884427A (en) * 1986-12-15 1989-12-05 Hitachi, Ltd. Method of producing helical internal gear
US5082335A (en) * 1989-12-18 1992-01-21 Whirlpool Corporation Vacuum insulation system for insulating refrigeration cabinets
US5107649A (en) * 1988-04-15 1992-04-28 Midwest Research Institute Compact vacuum insulation embodiments
US5152061A (en) * 1992-02-19 1992-10-06 Tesma International Inc. Cold-forming of toothed wheels from sheet steel
US5237744A (en) * 1992-02-19 1993-08-24 Tesma International Inc. Method of cold-forming toothed wheels
US5316171A (en) * 1992-10-01 1994-05-31 Danner Harold J Jun Vacuum insulated container
US5403063A (en) * 1993-05-21 1995-04-04 Sjostedt; Robbie J. Modular integral floor construction for vehicle body
US5447048A (en) * 1992-06-30 1995-09-05 Honda Giken Kogyo Kabushiki Kaisha Clutch drum and apparatus for manufacturing same
US5515955A (en) * 1994-07-25 1996-05-14 Ford Motor Company Torque converter lockup clutch construction and fabrication method
US5584202A (en) * 1991-07-24 1996-12-17 Hitachi, Ltd. Method and apparatus for manufacturing internal gear, internal gear structure and reduction mechanism unit having internal gear structure
US20020026955A1 (en) * 2000-07-21 2002-03-07 Takashi Ouchida Thin-film solar cell module

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086488A (en) * 1933-12-11 1937-07-06 Kelsey Hayes Wheel Co Method of forming brake drums
US3473211A (en) * 1966-09-16 1969-10-21 Oswald J Lindell Method of forming teeth on a tubular member
US3515303A (en) * 1967-05-26 1970-06-02 A I R Air Conditioning & Refri Light refrigerator container
US4409770A (en) * 1980-02-06 1983-10-18 Genbee Kawaguchi Vacuum insulation spacer
US4884427A (en) * 1986-12-15 1989-12-05 Hitachi, Ltd. Method of producing helical internal gear
US5107649A (en) * 1988-04-15 1992-04-28 Midwest Research Institute Compact vacuum insulation embodiments
US5082335A (en) * 1989-12-18 1992-01-21 Whirlpool Corporation Vacuum insulation system for insulating refrigeration cabinets
US5584202A (en) * 1991-07-24 1996-12-17 Hitachi, Ltd. Method and apparatus for manufacturing internal gear, internal gear structure and reduction mechanism unit having internal gear structure
US5152061A (en) * 1992-02-19 1992-10-06 Tesma International Inc. Cold-forming of toothed wheels from sheet steel
US5237744A (en) * 1992-02-19 1993-08-24 Tesma International Inc. Method of cold-forming toothed wheels
US5447048A (en) * 1992-06-30 1995-09-05 Honda Giken Kogyo Kabushiki Kaisha Clutch drum and apparatus for manufacturing same
US5316171A (en) * 1992-10-01 1994-05-31 Danner Harold J Jun Vacuum insulated container
US5403063A (en) * 1993-05-21 1995-04-04 Sjostedt; Robbie J. Modular integral floor construction for vehicle body
US5515955A (en) * 1994-07-25 1996-05-14 Ford Motor Company Torque converter lockup clutch construction and fabrication method
US20020026955A1 (en) * 2000-07-21 2002-03-07 Takashi Ouchida Thin-film solar cell module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6960743B2 (en) 2000-12-05 2005-11-01 Ibiden Co., Ltd. Ceramic substrate for semiconductor manufacturing, and method of manufacturing the ceramic substrate
CN100560445C (en) * 2005-04-08 2009-11-18 中国国际海运集装箱(集团)股份有限公司 The bulk cargo box of band goose neck tunnel

Also Published As

Publication number Publication date
JP2004003829A (en) 2004-01-08
DK200300506A (en) 2003-10-06
CN1450329A (en) 2003-10-22
DE10215129A1 (en) 2003-10-16
KR20030079796A (en) 2003-10-10

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AS Assignment

Owner name: WAGGONBAU ELZE GMBH & CO BESITZ KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOMES, GUNTER;REEL/FRAME:014144/0883

Effective date: 20030505

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION