US2018299205A1PendingUtilityA1

Heat exchanger for residential hvac applications

41
Assignee: RAHHAL CHARBELPriority: Oct 12, 2015Filed: Oct 12, 2015Published: Oct 18, 2018
Est. expiryOct 12, 2035(~9.3 yrs left)· nominal 20-yr term from priority
Inventors:Charbel RahhalKazuo SaitoMichael F. TarasTobias H. SienelArindom JoardarLee G. TetuJackie S. Anderson
F28D 1/0475F28D 1/047
41
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Claims

Abstract

A heat exchanger is provided including a first header, a second header, and a plurality of heat exchange tubes arranged in a spaced parallel relationship and fluidly coupling the first and second headers. At least one of the first header, second header and the plurality of heat exchange tubes includes a bend. The heat exchanger having an aspect ratio between about 2 and 6 after formation of the bend.

Claims

exact text as granted — not AI-modified
1 . A heat exchanger, comprising:
 a first header;   a second header;   a plurality of heat exchange tubes arranged in spaced parallel relationship and fluidly coupling the first header and second header;   wherein one of the first header, second header and the plurality of heat exchange tubes include a bend, the heat exchanger having an aspect ratio between 2 and 6 after formation of the bend.   
     
     
         2 . The heat exchanger according to  claim 1 , wherein the plurality of heat exchange tubes have a tube depth between about 8 mm and about 20 mm. 
     
     
         3 . The heat exchanger according to  claim 2 , wherein when the heat exchanger is configured for use in a refrigerant system having a capacity less than three tons, the depth of the plurality of heat exchange tubes is about 10 mm. 
     
     
         4 . The heat exchanger according to  claim 2 , wherein when the heat exchanger is configured for use in an refrigerant system having a capacity less than three tons, the depth of the plurality of heat exchange tubes is about 12 mm. 
     
     
         5 . The heat exchanger according to  claim 2 , wherein when the heat exchanger is configured for use in a refrigerant system having a capacity of at least three tons, the depth of the plurality of heat exchange tubes is about 16 mm. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein the plurality of heat exchange tubes have a height of about 1.3 mm±0.3 mm. 
     
     
         7 . The heat exchanger according to  claim 1 , wherein the plurality of heat exchange tubes have a tube pitch between about 8.9 mm and about 15.5. mm. 
     
     
         8 . The heat exchanger according to  claim 7 , wherein the plurality of heat exchange tubes have a tube pitch of about 9.3 mm. 
     
     
         9 . The heat exchanger according to  claim 1 , wherein the heat exchanger is configured for use in an air conditioning system. 
     
     
         10 . (canceled) 
     
     
         11 . (canceled) 
     
     
         12 . The heat exchanger according to  claim 9 , wherein the heat exchanger is configured with a first pass and a second pass, a first portion of the plurality of heat exchange tubes being configured for the first pass, and a second portion of the plurality of heat exchange tubes being configured for the second pass, wherein a ratio of a number of heat exchange tubes within the first portion and the second portion is about 2.5 to 6. 
     
     
         13 . The heat exchanger according to  claim 1 , wherein the heat exchanger is configured for use in a heat pump system. 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . The heat exchanger according to  claim 1 , wherein a plurality of fins is disposed in thermal communication with the plurality of heat exchange tubes. 
     
     
         18 . The heat exchanger according to  claim 17 , wherein the plurality of fins have a louver length between about 80% and 90% of a fin height. 
     
     
         19 . The heat exchanger according to  claim 12 , wherein the plurality of fins have a louver pitch between about 1 mm and 1.7 mm. 
     
     
         20 . The heat exchanger according to  claim 12 , wherein the plurality of fins have a louver angle between about 28 degrees and about 45 degrees. 
     
     
         21 - 26 . (canceled) 
     
     
         27 . The heat exchanger of  claim 1 , wherein one of the first header and second header includes the bend and the bend further comprises a ratio of bend radius divided by a total thickness of the heat exchanger, wherein the ratio is greater than 4. 
     
     
         28 . The heat exchanger of  claim 1 , wherein the plurality of heat exchange tubes includes the bend and the bend further comprises a ratio of bend radius divided by a total thickness of the heat exchanger, wherein the ratio is greater than 10. 
     
     
         29 . A system comprising:
 the heat exchanger according to any of the preceding claims; and   an air management system in fluid communication with the heat exchanger and configured to impart on an airflow having an average face velocity of greater than or equal to 200 feet per minute over an outer surface of the heat exchanger when the system is operating.   
     
     
         30 . The system of  claim 18 , wherein the air management system comprises a fan. 
     
     
         31 . The system of  claim 18 , a noise level of the system at a measurement distance of 1 meter from the system is less than or equal to 65 dBa.

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