Heat / enthalpy exchanger element and method for the production
First Claim
1. A method for the production of enthalpy exchanger elements comprising the steps of:
- perforating a flat plate element according to a predetermined perforation pattern within the plate outer dimensions;
applying to at least one side of the plate element a polymer film with water vapor transmission characteristics; and
forming the plate element into a desired shape exhibiting a corrugation pattern, whereby the polymer film is formed into the same corrugation pattern shape as that of the plate element;
wherein a perforation density, defined by a number of perforations per unit area, in a border area of the plate element is larger than in a middle area of the plate element to allow for extended efficiency tunability of the enthalpy exchange plate element.
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Accused Products
Abstract
Methods, plate elements and heat/enthalpy exchangers. a) perforating an unformed plate element with defined outer dimensions in any desired area and in any desired dimension; b) covering at least one side of the unformed plate element with a thin polymer film with latent energy exchange characteristics and; c) forming the plate element into a desired shape and a pattern of corrugations and/or embossing. The operations b) and c) may be performed in a different order. For instance, when the plate element is made out of plastic, b) may be performed before c) whereas, when the plate element is made out of aluminum (or plastic), c) may be performed before b). Operations a) and/or b) and/or c) may also, in certain embodiments, be combined.
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Citations
33 Claims
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1. A method for the production of enthalpy exchanger elements comprising the steps of:
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perforating a flat plate element according to a predetermined perforation pattern within the plate outer dimensions; applying to at least one side of the plate element a polymer film with water vapor transmission characteristics; and forming the plate element into a desired shape exhibiting a corrugation pattern, whereby the polymer film is formed into the same corrugation pattern shape as that of the plate element; wherein a perforation density, defined by a number of perforations per unit area, in a border area of the plate element is larger than in a middle area of the plate element to allow for extended efficiency tunability of the enthalpy exchange plate element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26)
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20. A method for the production of enthalpy exchanger elements comprising the steps of:
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perforating a flat plate element according to a predetermined perforation pattern within the plate outer dimensions, wherein the perforated flat plate has a first region having a first perforation density and a second region having a second perforation density that is different than the first perforation density, the predetermined perforation pattern being preselected prior to perforating the flat plate element; applying to at least one side of the plate element a polymer film with water vapor transmission characteristics; and forming the plate element into a desired shape exhibiting a corrugation pattern, whereby the polymer film is formed into the same corrugation pattern shape as that of the plate element; wherein the polymer film is heat bonded or glued to the plate element while the plate element is being formed into the desired shape. - View Dependent Claims (21, 32, 33)
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27. A method for the production of enthalpy exchanger elements comprising the steps of:
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perforating a flat plate element according to a predetermined perforation pattern; forming the perforated plate element into a desired shape exhibiting a corrugation pattern; covering the at least one side of the perforated plate element with a thermo formable web prior to performing the step of forming the perforated plate element such that holes that form the perforation pattern are temporarily sealed; and applying to the at least one side of the formed plate element a polymer film with water vapor transmission characteristics, whereby the polymer film is formed into the same corrugation pattern shape as that of the formed plate element. - View Dependent Claims (28, 29, 30, 31)
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Specification