Patent Description:
According to the invention, a method for manufacturing an insulation member for a vacuum insulated structure includes the step of forming a bag with a single layer porous fabric, wherein the bag is free from metallic and plastic films. The method further includes the steps of filling the bag with insulation materials, sealing the insulation materials within the bag, vibrating the insulation materials and the bag to define a pillow, compressing the pillow within a mold to define a compressed insulation panel, positioning the compressed insulation panel in an insulation cavity that is defined between a first panel and a second panel, and evacuating the insulation cavity and the compressed insulation panel to define said vacuum insulated structure, in accordance with claim <NUM>. Advantageous further developments are subject-matter of the dependent claims.

The present illustrated embodiments reside primarily in combinations of method steps and apparatus components related to a compressed insulation panel. Accordingly, the apparatus components and method steps have been represented, where appropriate, by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. Further, like numerals in the description and drawings represent like elements.

The terms "including," "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a. " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Referring to <FIG>, reference numeral <NUM> generally designates an insulation member for a vacuum insulated structure <NUM>. A bag <NUM> is formed with a single layer porous fabric <NUM> and is free from metallic and plastic films. The bag <NUM> is filled with insulation materials <NUM>, and the insulation materials <NUM> are sealed within the bag <NUM>. The insulation materials <NUM> and the bag <NUM> are vibrated to define a pillow <NUM>. The pillow <NUM> is compressed within a mold <NUM> to define a compressed insulation panel <NUM>. The compressed insulation panel <NUM> is positioned in an insulation cavity <NUM> defined between a first panel <NUM> and a second panel <NUM>. The insulation cavity <NUM> and the compressed insulation panel <NUM> are evacuated to define the vacuum insulated structure <NUM>.

Referring now to <FIG>, the vacuum insulated structure <NUM> is illustrated as part of an appliance <NUM>. The appliance <NUM> is illustrated as a refrigerating appliance, but it is also contemplated that the vacuum insulated structure <NUM> described herein can be used with a variety of appliances. Moreover, the vacuum insulated structure <NUM> may be in the form of a vacuum insulated structural cabinet and/or a vacuum insulated panel that may be used as an insulation member for the appliance <NUM>. For example, the appliance <NUM> is illustrated with a door <NUM> coupled to a cabinet <NUM> of the appliance <NUM>. The vacuum insulated structure <NUM> may be utilized in various forms within either or both of the door <NUM> and the cabinet <NUM>. It is generally contemplated that the vacuum insulated structure <NUM> is in the form of a panel when utilized for the door <NUM>, and the vacuum insulated structure <NUM> is in the form of a structural cabinet when utilized for the cabinet <NUM>.

According to various examples, the vacuum insulated structure <NUM> includes the first panel <NUM> and the second panel <NUM>, mentioned above. The first panel <NUM> and the second panel <NUM> are typically formed from a metallic material, which minimizes potential exposure of the insulation cavity <NUM> to air molecules. Stated differently, the first and second panels <NUM>, <NUM> can minimize the potential outgassing of the insulation cavity <NUM> as a result of the metallic material. The first and second panels <NUM>, <NUM> may take the form of a liner and a wrapper, respectively, when the vacuum insulated structure <NUM> is utilized for the cabinet <NUM>. The first panel <NUM> and the second panel <NUM> each have an interior surface <NUM> and an exterior surface <NUM>.

With further reference to <FIG>, it is generally contemplated that the interior surface <NUM> of each of the first and second panels <NUM>, <NUM> at least partially defines the insulation cavity <NUM> in which the insulation member <NUM> is disposed. The insulation cavity <NUM> is sealed and further defined by a trim breaker <NUM>. It is generally contemplated that the trim breaker <NUM> is formed from a polymeric material, such as plastic. As illustrated in <FIG>, the first panel <NUM> is disposed within a first groove <NUM> of the trim breaker <NUM>, and the second panel <NUM> is disposed within a second groove <NUM> of the trim breaker <NUM>. The trim breaker <NUM> is configured to assist in the maintenance of the at least partial vacuum that is defined within the insulation cavity <NUM>, described further below.

Referring now to <FIG>, the bag <NUM> is illustrated with sidewalls <NUM>, a base <NUM>, and an opening <NUM>. As mentioned above, it is generally contemplated that the bag <NUM> is formed from the porous fabric <NUM>, such that the bag <NUM> may be referred to as a porous bag <NUM>. By way of example, not limitation, the porous fabric <NUM> may be a closed-cell woven fabric, such as a polypropylene. Stated differently, the porous fabric <NUM> may be a closed-cell bonded mesh. As also mentioned above, the porous fabric <NUM> is a fabric material that is generally free from a plastic and/or metal film and/or coating. The porous fabric <NUM> is a single layer fabric that is capable of drawing air through the sidewalls <NUM>. The porous fabric <NUM> is free from any separate coatings or films that would otherwise seal the sidewalls <NUM> o the bag <NUM> and, as such, is free from plastic or metal coatings typically found in such sealing coatings or films. The bag <NUM> can be formed by sealing or otherwise coupling a first fabric portion <NUM> and a second fabric portion <NUM> to define the base <NUM> and the sidewalls <NUM> of the bag <NUM>. For example, the first fabric portion <NUM> can be aligned with the second fabric portion <NUM>, such that edges <NUM> of the first and second fabric portions <NUM>, <NUM> can at least partially overlap. The edges <NUM> of the first and second fabric portions <NUM>, <NUM> can then be heat sealed and/or sewn to form the bag <NUM> via a coupling assembly <NUM>. It is generally contemplated that the coupling assembly <NUM> may be a heat sealing assembly in which the first and second fabric portions <NUM>, <NUM> can be positioned to seal the edges <NUM>.

Additionally or alternatively, the first fabric portion <NUM> may form the sidewalls <NUM> of the bag <NUM>, and the second fabric portion <NUM> may form the edges <NUM> and the base <NUM> that couple the sidewalls <NUM> together. In such configuration, it is generally contemplated that the first fabric portion <NUM> is formed from a first closed-cell woven fabric, and the second fabric portion <NUM> is formed from a second closed-cell woven fabric. The first closed-cell woven fabric of the first fabric portion <NUM> may be formed from a closed-cell woven fabric that is generally different from the second closed-cell woven fabric of the second fabric portion <NUM>. The use of different closed-cell woven fabrics for each of the first fabric portion <NUM> and the second fabric portion <NUM> may be strengthen the overall construction of the bag <NUM>. The configuration of the bag <NUM> with the first and second fabric portions <NUM>, <NUM> assists in the retention of the final form of the compressed insulation member <NUM> as formed within the mold <NUM>, described below. The closed-cell nature of the first and second fabric portions <NUM>, <NUM> assists in retaining the insulation materials <NUM> within the bag <NUM>, while still allowing evacuation of any potential air or other gasses present in the bag <NUM> after the bag <NUM> is sealed. As mentioned above, the bag <NUM> has the opening <NUM>, such that three sides of the first and second fabric portions <NUM>, <NUM> are sealed to form the bag <NUM>.

With further reference to <FIG>, the bag <NUM> is filled with the insulation materials <NUM>, as mentioned above, to ultimately define the pillow <NUM>. The insulation materials <NUM> are deposited through the opening <NUM> of the bag <NUM> via a hopper <NUM> or other distribution devices until the insulation materials <NUM> and the bag <NUM> define a predetermined weight. The weight of the bag <NUM> with the insulation materials <NUM> may vary depending on the intended use within the vacuum insulated structure <NUM>. By way of example, not limitation, the insulation materials <NUM> can be comprised of a low-density powder with a relative density ranging between approximately <NUM>/m<NUM> to <NUM>/m<NUM>. Additionally or alternatively, the relative density of the insulation materials <NUM> can be less than <NUM>/m<NUM> and/or greater than <NUM>/m<NUM>. The relative density of the insulation materials <NUM> may correspond to a predetermined weight of the insulation materials <NUM> to be disposed within the bag <NUM>.

It is generally contemplated that the insulation materials <NUM> may be comprised of a black carbon powder. It is also contemplated that the insulation materials <NUM> may be comprised of, but not limited to, fumed silica with or without any radiation dispersing materials, silica powders, precipitated silica, hydrophobic silica, glass fibers, glass microspheres, perlite materials, granulated silica, other silica material, and/or any combination of the insulation materials <NUM> set forth herein.

Referring now to <FIG>, the insulation materials <NUM> are dispensed into the opening <NUM> of the bag <NUM> via the hopper <NUM>, and the bag <NUM> can be sealed via the coupling assembly <NUM> once the predetermined weight of the bag <NUM> and the insulation materials <NUM> is achieved. The opening <NUM> of the bag <NUM> can be sealed using the same heat sealing method used during formation of the bag <NUM>. Additionally or alternatively, the opening <NUM> of the bag <NUM> may be sealed via sewing or other methods of sealing the porous bag <NUM>. As mentioned above, the porous bag <NUM> is configured to allow air and/or other gasses to pass through the sidewalls <NUM> of the bag <NUM> while retaining the insulation materials <NUM> within the bag <NUM>. The porous bag <NUM> and the insulation materials <NUM> can be evacuated, such that the air and/or other gas particles present within the bag <NUM> and the insulation materials <NUM> can be evacuated and removed through, at least, the sidewalls <NUM> of the porous bag <NUM>, as described further below.

While the bag <NUM> is porous to assist in evacuation of air within the bag <NUM> and the insulation materials <NUM>, the bag <NUM> is sufficiently solid to retain the insulation materials <NUM> within the bag <NUM>, as mentioned above. Stated differently, the insulation materials <NUM> are contained within the bag <NUM> during evacuation of the porous bag <NUM> and the insulation materials <NUM>, described further below. As a result of the closed-cell woven fabric of the bag <NUM>, air and/or other gasses may remain present within the insulation materials <NUM> even after the sidewalls <NUM> of the bag <NUM> are sealed. The insulation materials <NUM>, as deposited within the bag <NUM>, are generally considered to be low density insulation materials <NUM>. The insulation materials <NUM> may be further densified to increase the thermal insulation of the insulation materials <NUM>, described below.

Referring now to <FIG>, the bag <NUM> containing the insulation materials <NUM> is positioned and/or disposed on a vibrating assembly <NUM>. The vibrating assembly <NUM> includes a vibration surface <NUM> operably coupled to a stationary surface <NUM> via at least one biasing member <NUM>. As illustrated in <FIG>, the vibrating assembly <NUM> includes first and second biasing members 86a, 86b and a motor <NUM> each operably coupled to the vibration surface <NUM>. The motor <NUM> may be configured to be communicatively coupled to a controller <NUM> that is configured to activate and deactivate the motor <NUM>. The controller <NUM> may include an algorithm that corresponds with the particular intended use of the insulation member <NUM> that is ultimately formed. For example, the controller <NUM> may activate the motor <NUM> to vibrate the pillow <NUM> until the insulation materials <NUM> reach a predetermined density. It is further contemplated that the vibration surface <NUM> may be configured with sensors <NUM> to detect the altered density of the pillow <NUM>. The sensors <NUM> are communicatively coupled to the controller <NUM>, such that the controller <NUM> may deactivate the motor <NUM> upon detection of the predetermined density by the sensors <NUM>.

Vibration of the bag <NUM> and the insulation materials <NUM> can assist in the overall compaction and/or densification of the insulation materials <NUM> within the bag <NUM>. For example, the density of the insulation materials <NUM> can be increased as the individual insulation particles are repositioned into a more densified state within the bag <NUM>. The bag <NUM> and the insulation materials <NUM> can be shaken, vibrated, and otherwise manipulated on the vibrating surface <NUM> in order to manipulate the insulation materials <NUM> into the more densified state. The vibration of the insulation materials <NUM> is configured to de-aerate the insulation materials <NUM>. The de-aeration of the insulation materials <NUM> minimizes the overall draw and compression of the mold <NUM> to form the insulation member <NUM>. The vibration of the insulation materials <NUM> and the bag <NUM> to densify the insulation materials <NUM> defines the pillow <NUM>, mentioned above. The pillow <NUM> is formed once the insulation materials <NUM> are densified during the vibration of the bag <NUM> on the vibration surface <NUM>. As mentioned above, it is generally contemplated that the pillow <NUM> may contain air between the sidewalls <NUM> of the bag <NUM> even with the newly densified insulation materials <NUM>. The vibrating assembly <NUM> is configured to densify the insulation materials <NUM> to be evacuated at a later time, described below. In this condition, the pillow <NUM> is not yet evacuated to remove the air particles and other gases that may be present within the pillow <NUM> and, more specifically, the insulation materials <NUM>.

With further reference to <FIG>, the pillow <NUM> is positioned within the mold <NUM> that is configured to compress the pillow <NUM> to define the insulation member <NUM>. It is generally contemplated that the mold <NUM> may form the insulation member <NUM> in either configuration of the compressed insulation panel <NUM> and/or compressed insulation member <NUM>. The term compressed insulation member <NUM> is typically used to describe the utilization of the insulation member <NUM> within a three-dimensional structure, such as the cabinet <NUM> of the appliance <NUM>. It is alternatively contemplated that the term compressed insulation member <NUM> can also refer to the use of the insulation member <NUM> within the door <NUM> of the appliance <NUM>. Typically, the term compressed insulation panel <NUM> is utilized when referring to the positioning of the insulation member <NUM> within the door <NUM> of the appliance <NUM>. It is also contemplated that the term compressed insulation panel <NUM> may be used when the insulation member <NUM> is positioned within the cabinet <NUM> of the appliance <NUM>, mentioned below.

The mold <NUM> includes a body <NUM> that has side portions <NUM>, a base portion <NUM>, and a cover portion <NUM>. It is generally contemplated that the depicted mold <NUM> illustrated in <FIG> is a single example of a type of mold <NUM> that may be used for forming the insulation member <NUM>. As generally mentioned above, the insulation member <NUM> may take the form of either a compressed insulation panel <NUM> and/or a compressed insulation member <NUM>. While the depicted mold <NUM> is illustrated as forming the compressed insulation member <NUM>, it is also contemplated that alternative configurations of the mold <NUM> may be used to form the compressed insulation member <NUM>. The pillow <NUM> can be placed within the body <NUM> of the mold <NUM>. The side portions <NUM> can be adjusted or otherwise altered to retain the pillow <NUM> within the mold <NUM>. For example, the mold <NUM> also includes levers <NUM> that can be utilized to brace the side portions <NUM> along the base portion <NUM>. The levers <NUM> each include a handle <NUM> and rods <NUM>. The handle <NUM> can be manipulated to articulate the rods <NUM> against the side portions <NUM>. It is contemplated that the cover portion <NUM> can be utilized to compress the pillow <NUM> within the mold <NUM>, described below.

With further reference to <FIG>, the cover portion <NUM> includes a press <NUM> that can compress the pillow <NUM> to define the compressed insulation member <NUM>. For example, the press <NUM> engages the pillow <NUM> upon activation of the press <NUM>. The press <NUM> is released from the cover portion <NUM> and compresses a center portion <NUM> of the pillow <NUM> to form the insulation member <NUM>. The engagement of the pillow <NUM> by the press <NUM> can compress the pillow <NUM> to define the compressed insulation member <NUM>. The depicted mold <NUM> can form the compressed insulation member <NUM> as a result of the direction of the compression. Additionally or alternatively, the cover portion <NUM> may compress downward on the pillow <NUM>. For example, the cover portion <NUM> may be articulated to exert a downward compressive force on the pillow <NUM> to define the compressed insulation member <NUM>.

As illustrated in <FIG>, the press <NUM> compresses the center portion <NUM> of the pillow <NUM> to define a plurality of walls <NUM> of the compressed insulation member <NUM>. The insulation member <NUM> may be configured within the mold <NUM> to have the multiple walls <NUM>, such that the insulation member <NUM> can have a three-dimensional configuration. The formation of the walls <NUM> of the compressed insulation member <NUM> configures the compressed insulation member <NUM> to correspond with the insulation cavity <NUM>. Stated differently, the compressed insulation member <NUM> may be formed into a three-dimensional structure that can generally correspond to the insulation cavity <NUM> defined between the liner <NUM> and the wrapper <NUM>.

Referring to <FIG>, the press <NUM> of the mold <NUM> can form the insulation member <NUM> into the compressed insulation panel <NUM>, as schematically illustrated in <FIG>. The mold <NUM> densifies the insulation member <NUM>, such that the insulation materials <NUM> within the insulation member <NUM> may have a density ranging from approximately <NUM>/m<NUM> to approximately <NUM>/m<NUM>. It is also contemplated that the density of the insulation materials <NUM> within the compressed insulation member <NUM> may have a density that is less than <NUM>/m<NUM> and/or greater than <NUM>/m<NUM>. The density of the insulation materials <NUM> within the insulation member <NUM> generally depends on the density of the particular insulation material <NUM> used. The density of the insulation materials <NUM> can vary depending on the type of insulation materials <NUM> used to fill the bag <NUM>, as mentioned above. The compressed insulation panel <NUM> can be utilized to insulate the door <NUM> of the appliance <NUM>. It is also contemplated that the multiple compressed insulation panels <NUM> may be utilized within the insulation cavity <NUM> to insulate the appliance <NUM>. For example, first, second, and third compressed insulation panels <NUM> may be used to line the insulation cavity <NUM> between the liner <NUM> and the wrapper <NUM>.

The insulation member <NUM> is removed from the mold <NUM>, prior to placement within the insulation cavity <NUM>, via risers <NUM> that can be operably coupled to the base portion <NUM> of the mold <NUM>. The risers <NUM> are configured to raise the compressed insulation member <NUM> out of the body <NUM> of the mold <NUM> to be transported to a storage location and/or for installation into the insulation cavity <NUM>. It is generally contemplated that the compressed insulation member <NUM> is removed via a material handling solution. The material handling solution is configured to handle or otherwise manipulate the fragile compressed insulation member <NUM> with minimal abrasion or risk of damage to the compressed insulation member <NUM>.

With further reference to <FIG>, the insulation member <NUM> can be stored within the storage location for future use within a vacuum insulated structure <NUM>. As the compressed insulation member <NUM> remains free from evacuation, the compressed insulation member <NUM> can be stored for an extended period of time until desired use in a vacuum insulated structure <NUM>. Once the vacuum insulated structure <NUM> is to be formed, the compressed insulated member <NUM>, whether removed from the storage location or direct from the mold <NUM>, can be disposed within the insulation cavity <NUM>. The compressed insulation member <NUM> can be positioned within the insulation cavity <NUM> and is configured to provide and assist in the overall insulation and thermal regulation of the appliance <NUM>. Once the compressed insulation m <NUM> is disposed within the insulation cavity <NUM>, the compressed insulation member <NUM> can be evacuated.

The vacuum insulated structure <NUM> is configured with an evacuation port <NUM> (<FIG>) to which a vacuum pump <NUM> (<FIG>) may be coupled. As the vacuum is drawn, the air and/or other gasses that may be present in the insulation cavity <NUM> and/or the compressed insulation member <NUM> may be removed. It is generally contemplated that the bag <NUM> may further shrink or be compressed with the insulation materials <NUM> as the at least partial vacuum is defined within the insulation cavity <NUM>. Similarly, the liner <NUM> and the wrapper <NUM> may generally compress or be articulated toward the compressed insulation member <NUM> to form the vacuum insulated structure <NUM>. Once the at least partial vacuum is defined, the vacuum insulated structure <NUM> can be utilized with the appliance <NUM>. As mentioned above, the compressed insulation member <NUM> and the vacuum insulated structure <NUM> can be utilized in the door <NUM> and/or the cabinet <NUM> of the appliance <NUM> to improve the overall thermal regulation of the appliance <NUM>.

Referring again to <FIG>, a method <NUM> for manufacturing the insulation member <NUM> includes the following steps. The porous fabric <NUM> is selected and utilized to form the bag <NUM> via heat sealing the edges <NUM> of the first and second fabric portions <NUM>, <NUM> (step <NUM>). By way of example, not limitation, the closed-cell woven fabric that is free from plastics and metals can be used to form the bag <NUM> (step <NUM>). The opening <NUM> is defined during the heat sealing formation of the bag <NUM> (step <NUM>), and the insulation materials <NUM> are disposed in the bag <NUM> (step <NUM>). It is generally contemplated that the hopper <NUM> or other distribution devices may be utilized to deposit the insulation materials <NUM> into the bag <NUM>. By way of example, not limitation, the bag <NUM> may be filled with approximately <NUM>/m<NUM> of insulation materials <NUM> (step <NUM>). Once the bag <NUM> is filled with the predetermined level of insulation materials <NUM>, the opening <NUM> of the bag <NUM> can be sealed (step <NUM>). It is contemplated that the opening <NUM> can be sealed via the heat sealing technique utilized in formation of the bag <NUM>. Stated differently, heat can be applied to the opening <NUM> to retain the insulation materials <NUM> within the bag <NUM> (step <NUM>).

The bag <NUM> containing the insulation materials <NUM> can be disposed on the vibration surface <NUM> once the opening <NUM> of the bag <NUM> has been sealed (step <NUM>). The vibration surface <NUM> is configured to transmit vibration to the bag <NUM> and the insulation materials <NUM>. The insulation materials <NUM> can be de-aerated and densified as a result of the vibration (step <NUM>). It is also contemplated that the vibration of the vibration surface <NUM> can evenly distribute the insulation materials <NUM> within the bag <NUM> (step <NUM>). The even distribution and the densification of the insulation materials <NUM> within the bag <NUM> defines the pillow <NUM> (step <NUM>). Once the pillow <NUM> is defined and the insulation materials <NUM> are at least partially densified, the pillow <NUM> can be positioned within the mold <NUM> (step <NUM>).

The pillow <NUM> can be compressed within the mold <NUM> (step <NUM>) to define the compressed insulation panel <NUM> (step <NUM>). The insulation materials <NUM> within the pillow <NUM> can be further densified by compression within the mold <NUM> (step <NUM>). For example, the insulation materials <NUM> may be densified to approximately <NUM>/m<NUM> via compression within the mold <NUM> (step <NUM>). It is generally contemplated that the insulation materials <NUM> can be compressed via the press <NUM> to increase the density of the insulation materials <NUM> within the bag <NUM> (step <NUM>). The pillow <NUM> can be compressed to define a three-dimensional body that corresponds to the insulation cavity <NUM> of the vacuum insulated structure <NUM> (step <NUM>). Stated differently, the pillow <NUM> can be compressed to define the compressed insulation member <NUM> with multiple walls <NUM>.

Referring still to <FIG>, the compressed insulation panel <NUM> can be moved from the mold <NUM> via the material handling solution (step <NUM>). It is contemplated that the compressed insulation panel <NUM> can be stored until use within the vacuum insulated structure <NUM> (step <NUM>) and/or can be positioned within the insulation cavity <NUM> defined between the first panel <NUM> and the second panel <NUM> (step <NUM>). Once the vacuum insulated structure <NUM> is to be formed, the compressed insulation panel <NUM> can be positioned within the insulation cavity <NUM>. The compressed insulation panel <NUM> can be positioned between the first and second panels <NUM>, <NUM>, and the first and second panels <NUM>, <NUM> can be coupled via the trim breaker <NUM> (step <NUM>). The insulation cavity <NUM> and the compressed insulation panel <NUM> can then be evacuated with the vacuum pump <NUM> via the evacuation port <NUM> (step <NUM>) to define the at least partial vacuum within the insulation cavity <NUM> (step <NUM>). The evacuation of the insulation cavity <NUM> and the compressed insulation panel <NUM> defines the vacuum insulated structure <NUM> (step <NUM>).

Claim 1:
A method (<NUM>) for manufacturing an insulation member (<NUM>) for a vacuum insulated structure (<NUM>), comprising steps of:
providing (<NUM>) a bag (<NUM>) with a single layer porous fabric (<NUM>), wherein the bag (<NUM>) is free from metallic and plastic films;
filling (<NUM>) the bag (<NUM>) with insulation materials (<NUM>);
sealing (<NUM>) the insulation materials (<NUM>) within the bag (<NUM>);
vibrating (<NUM>) the insulation materials (<NUM>) and the bag (<NUM>) to define (<NUM>) a pillow (<NUM>);
compressing (<NUM>) the pillow (<NUM>) within a mold (<NUM>) to define (<NUM>) a compressed insulation panel (<NUM>);
positioning (<NUM>) the compressed insulation panel (<NUM>) in an insulation cavity (<NUM>) defined between a first panel (<NUM>) and a second panel (<NUM>); and
evacuating (<NUM>) the insulation cavity (<NUM>) and the compressed insulation panel (<NUM>) to define (<NUM>) said vacuum insulated structure (<NUM>).