# US 12,000,751 B2 · Outside heat exchanger thaw and freeze test apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,751 B2 - Document ID: US12000751B2 - Status: Granted - Kind: B2 - Application number: 17/659,022 - Filed: 2022-04-13 - Published: 2023-10-19 - Granted: 2024-06-04 - Earliest claimed: 2022-04-13 - Assignees: Hanon Systems - Applicants: Hanon Systems - Inventors: Alex Krajcirovic; Mike Kowalski; Martin Kubasinski; Bill Turnbul - Web page: https://patentgrep.com/patent/US12000751B2 ## CPC - G01M 1/16: by oscillating or rotating the body to be tested - G01G 1/00: Weighing apparatus involving the use of a counterweight or other counterbalancing mass - G01M 1/02: Details of balancing machines or devices - G01M 1/32: by adding material to the body to be tested, e.g. by correcting-weights - G01M 99/002: {Thermal testing (flaw detection G01N25/72)} - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G01G: WEIGHING (sorting by weighing B07C5/16) ## Abstract A testing apparatus includes a base structure and a supporting structure rotatably coupled to the base structure. The supporting structure includes an engaging portion configured to engage a liquid-retaining article. A load cell assembly connects the base structure to the supporting structure. The load cell assembly includes a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof. The reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof. ## Claims ### Claim 1 A testing apparatus comprising: a base structure; a supporting structure rotatably coupled to the base structure, the supporting structure including an engaging portion configured to engage a liquid-retaining article; and a load cell assembly connecting the base structure to the supporting structure, the load cell assembly including a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof, wherein the reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof, wherein the liquid-retaining article is a heat exchanging structure configured to be installed in a vehicle, wherein the engaging portion of the supporting structure is configured to orient the heat exchanging structure at an inclination corresponding to an inclination of the heat exchanging structure when installed in the vehicle. ### Claim 2 (depends on 1) The testing apparatus of claim 1, further comprising a counterweight assembly coupled to the supporting structure and configured to balance the supporting structure about the axis of rotation thereof prior to the liquid accumulating on the liquid-retaining article. ### Claim 3 (depends on 2) The testing apparatus of claim 2, wherein the counterweight assembly includes a counterweight, wherein a distance the counterweight is spaced from a vertically extending plane arranged parallel to and passing through the axis of rotation of the supporting structure is adjustable to balance the supporting structure about the axis of rotation thereof prior to the liquid accumulating on the liquid-retaining article. ### Claim 4 (depends on 3) The testing apparatus of claim 3, wherein a center of mass of the liquid-retaining article and the counterweight assembly are disposed to opposing sides of the vertically extending plane. ### Claim 5 (depends on 1) The testing apparatus of claim 1, wherein the load cell and a center of mass of the liquid-retaining article are each spaced an equal distance from a vertically extending plane arranged parallel to and passing through the axis of rotation of the supporting structure. ### Claim 6 (depends on 5) The testing apparatus of claim 5, further comprising a counterweight assembly coupled to the supporting structure and configured to balance the supporting structure about the axis of rotation thereof prior to the liquid accumulating on the liquid-retaining article, wherein each of the center of mass of the liquid-retaining article and the load cell are disposed to a first side of the vertically extending plane, and wherein the counterweight assembly is disposed to an opposing second side of the vertically extending plane. ### Claim 7 (depends on 1) The testing apparatus of claim 1, wherein the load cell assembly further includes a first connecting portion coupled to the base structure and a second connecting portion coupled to the supporting structure, wherein the load cell is vertically arranged between the first connecting portion and the second connecting portion. ### Claim 8 (depends on 7) The testing apparatus of claim 7, wherein the first connecting portion is disposed at a same height as the axis of rotation of the supporting structure with respect to a vertical direction. ### Claim 9 (depends on 8) The testing apparatus of claim 8, wherein the first connecting portion and a center of mass of the liquid-retaining article are each spaced an equal distance from a vertically extending plane arranged parallel to and passing through the axis of rotation of the supporting structure. ### Claim 10 A testing apparatus comprising: a base structure; a supporting structure rotatably coupled to the base structure, the supporting structure including an engaging portion configured to engage a liquid-retaining article; and a load cell assembly connecting the base structure to the supporting structure, the load cell assembly including a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof, wherein the reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof, wherein the supporting structure forms a tunnel configured to direct a flow of air therethrough, wherein the flow of air is configured to remove at least a portion of the water accumulated on the liquid-retaining article. ### Claim 11 (depends on 10) The testing apparatus of claim 10, wherein the tunnel is inclined relative to a vertical direction. ### Claim 12 (depends on 10) The testing apparatus of claim 10, wherein the tunnel is in fluid communication with a blower assembly configured to direct the flow of air through the tunnel. ### Claim 13 A testing apparatus comprising: a base structure; a supporting structure rotatably coupled to the base structure, the supporting structure including an engaging portion configured to engage a liquid-retaining article; and a load cell assembly connecting the base structure to the supporting structure, the load cell assembly including a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof, wherein the reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof, wherein the base structure forms an outer tunnel and the supporting structure forms an inner tunnel disposed within the outer tunnel, wherein a flow space of the outer tunnel is in fluid communication with a flow space of the inner tunnel. ### Claim 14 A testing apparatus comprising: a base structure; a supporting structure rotatably coupled to the base structure, the supporting structure including an engaging portion configured to engage a liquid-retaining article; a load cell assembly connecting the base structure to the supporting structure, the load cell assembly including a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof, wherein the reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof; and a fluid delivery device configured to deliver liquid to the liquid-retaining article for accumulation thereon. ### Claim 15 A testing apparatus comprising: an outer tunnel; an inner tunnel disposed within and rotatably coupled to the outer tunnel, the inner tunnel including an engaging portion configured to engage a liquid-retaining article; a blower assembly in fluid communication with each of the outer tunnel and the inner tunnel, the blower assembly configured to selectively direct a flow of air through the inner tunnel; a load cell assembly connecting the outer tunnel to the inner tunnel at a position spaced horizontally from an axis of rotation of the inner tunnel, the load cell assembly including a load cell configured to measure a reaction force present between the outer tunnel and the inner tunnel resulting from an imbalance of the inner tunnel about the axis of rotation thereof, wherein the reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the inner tunnel about the axis of rotation thereof; and a counterweight assembly coupled to the inner tunnel and configured to balance the inner tunnel about the axis of rotation thereof prior to the liquid accumulating on the liquid-retaining article. ### Claim 16 A method of operating a testing apparatus comprising: providing a base structure, a supporting structure, and a load cell assembly, the supporting structure rotatably coupled to the base structure and the load cell assembly connecting the base structure to the supporting structure at a position spaced from an axis of rotation of the supporting structure; supporting a liquid-retaining article on an engaging portion of the supporting structure; balancing the supporting structure about the axis of rotation thereof after the liquid-retaining article is supported by the engaging portion; delivering liquid to the liquid-retaining article for accumulation thereon after the balancing of the supporting structure; and measuring a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about the axis of rotation thereof following an accumulation of the liquid on the liquid-retaining article, wherein the reaction force is measured by a load cell of the load cell assembly and corresponds to a weight of the liquid that has accumulated on the liquid-retaining article, wherein the liquid-retaining article is a heat exchanging structure configured to be installed in a vehicle, wherein the engaging portion of the supporting structure is configured to orient the heat exchanging structure at an inclination corresponding to an inclination of the heat exchanging structure when installed in the vehicle. ### Claim 17 (depends on 16) The method of claim 16, wherein a liquid saturation test performed via use of the testing apparatus includes the delivering step occurring until the reaction force reaches a maximum value indicating that the liquid-retaining article is saturated with the liquid. ### Claim 18 (depends on 16) The method of claim 16, further comprising a step of passing air over the liquid-retaining article following the delivering of the liquid thereto. ### Claim 19 (depends on 18) The method of claim 18, wherein a liquid retention test performed via use of the testing apparatus includes comparing the reaction force measured by the load cell prior to the passing of the air over the liquid-retaining article to the reaction force measured by the load cell after the passing of the air over the liquid-retaining article to determine a weight of the liquid removed from the liquid-retaining article during the passing of the air over the liquid-retaining article.