Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberEP0840055 A2
Publication typeApplication
Application numberEP19970307861
Publication date6 May 1998
Filing date6 Oct 1997
Priority date30 Oct 1996
Also published asCN1088168C, CN1182695A, EP0840055A3
Publication number1997307861, 97307861, 97307861.1, EP 0840055 A2, EP 0840055A2, EP-A2-0840055, EP0840055 A2, EP0840055A2, EP19970307861, EP97307861
InventorsM. E. Garrett
ApplicantThe BOC Group plc
Export CitationBiBTeX, EndNote, RefMan
External Links: Espacenet, EP Register
Eutectic plates
EP 0840055 A2
Abstract
A eutectic plate 1 for attachment to the wall of a cylindrical storage vessel comprises spaced apart skins 3,4 interconnected by members 5 to define a plurality of compartments 8. Some compartments contain eutectic material 10 whilst other compartments define passageways for the flow therethrough of a fluid.
Images(1)
Previous page
Next page
Claims(3)
  1. A eutectic plate 1 of arcuate configuration for ready attachment directly to the wall of a cylindrical storage tank comprising spaced apart first and second skins 3,4 interconnected by members 5 to define a plurality of compartments 8 in which some compartments contain eutectic material 10 while other compartments define passageways 12 for the flow therethrough of a fluid.
  2. A eutectic plate as claimed in Claim 1, in which the disposition of the members between the skins defines compartments in the form of a honeycomb.
  3. A eutectic plate as claimed in Claim 2, in which each department is generally square in cross-section.
Description

The present invention relates to eutectic plates and in particular to eutectic plates adapted to be attached to the outer surface of cylindrical storage tanks, for example, refrigerated storage tanks.

Access to refrigerated storage tanks held within frames constructed to international standards is limited at the sides and the nozzles for entry into the tank are usually located on the median line along the top of the tank. Such tanks are usually insulated and then covered with a material for protecting the insulation.

It is an aim of the present invention to provide eutectic plates which are adapted to be clamped directly against the cylindrical outer wall of a tank and which can be made to function either as heating or cooling plates.

According to the present invention a eutectic plate of arcuate configuration for ready attachment directly to the wall of a cylindrical storage tank comprises spaced apart first and second skins interconnected by members to define a plurality of compartments in which some compartments contain eutectic material while other compartments define passageways for the flow therethrough of a fluid.

Preferably the disposition of the members between the skins defines compartments in the form of a honeycomb and in which each compartment is generally square in cross-section.

An embodiment of the invention will now be described, by way of example, reference being made to the Figures of the accompanying diagrammatic drawing in which:

  • Figure 1 is a perspective view of two eutectic plates according to the present invention; and
  • Figure 2 is a detail in cross-section of one of the eutectic plates illustrated in Figure 1.

As shown in Figure 1, two eutectic plates 1, each have a generally arcuate configuration for ready attachment directly to the outer wall of, for example, a cylindrical refrigerated storage tank (not shown). Referring also to Figure 2, the plates 1 are fixed to the tank under the conventional insulation 2 usually surrounding the tank when containing chilled products.

Each plate 1 as shown comprises inner and outer skins 3, 4 interconnected by cross members 5 and a thin intermediate plate member 6 which define with the skins 3,4 a plurality of compartments 8 of generally square cross-section. Some compartments 8 are filled with eutectic material 10 whilst others particularly those adjacent the inner skin 3 define passageways 12 for the passage therethrough of a fluid.

The plates 1 are shown with one plate member 6 but it will be appreciated that eutectic plates can be constructed according to the present invention with a plurality of thin plates 6 and a plurality of thin members at right angles to the plates 6 and the skins 3,4 thereby to form a honeycomb type structure.

It is relatively easy for the compartments to be made leak-tight, one against the other, and in practice eutectic plates 1 will be formed with passageways 12 preferable adjacent the inner skin 3 said passageways 12 will be connected by headers so that for example, liquid nitrogen could be passed through these passageways 12 to chill the eutectic mixture 10. This is a rapid process and achieves in minutes full cooling which would normally take several hours. Since the passageways 12 are directly adjacent to the tank surface, cold will also be transferred to the tank contents thereby aiding the chilling process. Again, because of the short time period involved, once the eutectic plates 1 have frozen, virtually all the cold becomes available for cooling the tank contents.

The eutectic plates 1 can also be used for heating a tank by passing steam through the passageways 12 to warm the tank contents. In this situation, the eutectic material 10 will melt and will act as a transfer medium by convection and conduction around the periphery of the tank.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
DE3614731A1 *30 Apr 19865 Nov 1987Ernst MehlingCold storage element for installation in cool rooms
GB672858A * Title not available
US2690653 *14 Aug 19525 Oct 1954Dole Refrigerating CoStamped plate
US4581285 *7 Jun 19838 Apr 1986The United States Of America As Represented By The Secretary Of The Air ForceHigh thermal capacitance multilayer thermal insulation
Non-Patent Citations
Reference
1 *W. E. LAUTERBACH: "PLATE/BLOWER-COIL SYSTEMS FOR LOW TEMPERATURE TRUCKS" ASHRAE JOURNAL, vol. 15, no. 3, March 1973, pages 55-60, XP002072212
Classifications
International ClassificationF17C13/00, B65D88/74, B65D88/06
Cooperative ClassificationF17C13/001
European ClassificationF17C13/00B
Legal Events
DateCodeEventDescription
6 May 1998AXRequest for extension of the european patent to
Free format text: AL;LT;LV;RO;SI
6 May 1998AKDesignated contracting states:
Kind code of ref document: A2
Designated state(s): GB NL
16 Sep 1998AKDesignated contracting states:
Kind code of ref document: A3
Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
16 Sep 1998AXRequest for extension of the european patent to
Free format text: AL;LT;LV;RO;SI
14 Apr 199917PRequest for examination filed
Effective date: 19990211
26 May 1999RBVDesignated contracting states (correction):
Designated state(s): AT BE
26 May 1999AKXPayment of designation fees
Free format text: AT BE
9 Jun 1999RBVDesignated contracting states (correction):
Designated state(s): GB NL
1 Jul 1999REGReference to a national code
Ref country code: DE
Ref legal event code: 8566
30 Nov 200518DDeemed to be withdrawn
Effective date: 20050503