Various embodiments herein relate to methods, structures, tools, installation systems, etc. for retrofitting a new electrochromic window in a pre-existing window recess. In many cases, the new electrochromic window is installed parallel to a lite of a pre-existing window, with the resulting structur
Various embodiments herein relate to methods, structures, tools, installation systems, etc. for retrofitting a new electrochromic window in a pre-existing window recess. In many cases, the new electrochromic window is installed parallel to a lite of a pre-existing window, with the resulting structure including the new electrochromic window, the pre-existing window, and a pocket that forms between them. Installation of a new electrochromic window in tandem with a pre-existing window results in many benefits including improved insulation (e.g., due to the presence of the additional air pocket(s) and lite(s)), improved climate control (e.g., due to the ability to control the amount of sunlight entering the building via the electrochromic window), and enhanced aesthetics.
대표청구항▼
1. A method of installing a new window registered with a pre-existing window in a building, the method comprising: providing a spacer having an adhesive applied to surfaces facing the pre-existing window and the new window, the spacer positioned between the pre-existing window and the new window, th
1. A method of installing a new window registered with a pre-existing window in a building, the method comprising: providing a spacer having an adhesive applied to surfaces facing the pre-existing window and the new window, the spacer positioned between the pre-existing window and the new window, the spacer being provided proximate a peripheral region of the pre-existing window and the new window, wherein a pocket is formed between the pre-existing window and the new window and is defined at its edges by the spacer;piercing the spacer with a tube; andapplying vacuum to the pocket to adhere the spacer to the pre-existing window and the new window, via a vacuum pump in fluidic communication with the tube, wherein gas leaving the pocket passes through a check valve after passing through the tube, and wherein vacuum is applied until a pressure within the pocket is reduced to about a target pressure or until a deflection of a lite of the pre-existing window or the new window is at about a maximum deflection and wherein the target pressure is determined at least in part based on characteristics of the pre-existing window including at least one of an area of the pre-existing window, a thickness of the pre-existing window, and/or a material of the pre-existing window. 2. The method of claim 1, wherein the tube is a hollow needle and the new window is an optically switchable window. 3. The method of claim 2, wherein the hollow needle and check valve are provided together in a spacer piercing pressure valve, further comprising leaving the spacer piercing pressure valve to remain installed through the spacer during operation. 4. The method of claim 1, wherein the pocket is maintained at a sub-atmospheric pressure for a duration sufficient to allow the adhesive on the spacer to set. 5. The method of claim 1, wherein the method is completed without applying more than 20 psi of force outward on a face of the pre-existing window. 6. The method of claim 1, further comprising using feedback from at least one of a vacuum sensor and/or an optical detection mechanism to monitor and control application of vacuum to the pocket. 7. The method of claim 6, wherein the pre-existing window and new window each comprise one or more lites, and wherein the optical detection mechanism measures a deflection of one of the lites and/or a distance between the lites of the pre-existing window and the new window. 8. The method of claim 1, wherein the target pressure is determined at least in part based on the area of the pre-existing window, the thickness of the pre-existing window, and the material of the pre-existing window. 9. The method of claim 1, wherein the target pressure is between about 50-300 Torr. 10. The method of claim 1, further comprising ceasing application of vacuum and monitoring a leakup rate. 11. The method of claim 10, wherein ceasing application of vacuum and monitoring the leakup rate are optionally performed periodically, and wherein vacuum is no longer applied after the leakup rate reaches a value that is lower than a target leakup rate. 12. The method of claim 1, further comprising monitoring a leak up rate while applying vacuum using a flow meter. 13. The method of claim 1, further comprising installing a retainer, wherein the retainer is installed without applying force on the new window. 14. The method of claim 13, wherein the retainer comprises at least a first portion and a second portion, the first and second portions extending substantially perpendicularly from one another, wherein during installation of the retainer, the first portion of the retainer is positioned proximate and parallel to a lite of the new window, and the second portion of the retainer is slid over, under, or alongside an edge of the new window, and wherein the second portion of the retainer engages with a fastening member positioned in a window frame in which the pre-existing window and new window are installed.
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