US2023349640A1PendingUtilityA1

Interlaced heat exchanger

Assignee: JOHNSON CONTROLS TECH COPriority: May 30, 2018Filed: Mar 27, 2023Published: Nov 2, 2023
Est. expiryMay 30, 2038(~11.8 yrs left)· nominal 20-yr term from priority
F28D 1/0417F28D 1/05341F28D 1/05391F28D 1/0473F28D 2021/0071F28D 1/0426F24F 1/00F28F 1/126F28D 1/05366F28F 9/0214F28F 9/0229F28F 1/022F28D 1/0471F28F 2260/02F28D 2021/007
81
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Claims

Abstract

Embodiments of the present disclosure are directed to a climate management system that includes a heat exchanger having a first set of microchannel coils fluidly coupled to a first circuit of the climate management system and a second set of microchannel coils fluidly coupled to a second circuit of the climate management system, where the first circuit and the second circuit are fluidly separate from one another, and where the first set of microchannel coils and the second set of microchannel coils are disposed in an alternating arrangement along a length of the heat exchanger such that the first set of microchannel coils and the second set of microchannel coils are interlaced in the heat exchanger.

Claims

exact text as granted — not AI-modified
1 - 20 . (canceled) 
     
     
         21 . A heat exchanger for a heating, ventilation, and air conditioning (HVAC) system, comprising:
 a first set of microchannel coils configured to fluidly couple to a first circuit of the HVAC system and configured to direct a first flow of working fluid therethrough;   a second set of microchannel coils configured to fluidly couple to a second circuit of the HVAC system and configured to direct a second flow of working fluid therethrough, wherein the first set of microchannel coils and the second set of microchannel coils are fluidly separate from one another, and wherein the first set of microchannel coils and the second set of microchannel coils are disposed in an alternating arrangement along a length of the heat exchanger such that the first set of microchannel coils and the second set of microchannel coils are interlaced in the heat exchanger; and   an integrated header, wherein a first microchannel coil of the first set of microchannel coils and a second microchannel coil of the second set of microchannel coils are fluidly coupled to the integrated header.   
     
     
         22 . The heat exchanger of  claim 21 , wherein the integrated header comprises a first passage and a second passage, the first microchannel coil of the first set of microchannel coils comprises a first header connection fluidly coupled to the first passage, and the second microchannel coil of the second set of microchannel coils comprises a second header connection fluidly coupled to the second passage. 
     
     
         23 . The heat exchanger of  claim 22 , wherein the integrated header comprises a divider extending within the integrated header and fluidly separating the first passage and the second passage from one another. 
     
     
         24 . The heat exchanger of  claim 23 , wherein the integrated header comprises a first slot fluidly coupled with the first header connection and a second slot fluidly coupled with the second header connection. 
     
     
         25 . The heat exchanger of  claim 24 , wherein the first header connection is twisted with respect to a body portion of the first microchannel coil. 
     
     
         26 . The heat exchanger of  claim 23 , wherein the first microchannel coil extends through the second passage, through a slot of the divider, and into the first passage. 
     
     
         27 . The heat exchanger of  claim 23 , wherein the first passage, the second passage, or both comprises a semi-circular cross-sectional shape. 
     
     
         28 . The heat exchanger of  claim 22 , wherein the first header connection extends from a first body portion of the first microchannel coil at a first angle, and the second header connection extends from a second body portion of the second microchannel coil at a second angle. 
     
     
         29 . The heat exchanger of  claim 28 , wherein the first angle and the second angle are substantially equal to one another. 
     
     
         30 . The heat exchanger of  claim 22 , wherein the first header connection is twisted with respect to a body portion of the first microchannel coil. 
     
     
         31 . The heat exchanger of  claim 30 , wherein the second header connection is twisted with respect to an additional body portion of the second microchannel coil. 
     
     
         32 . An interlaced heat exchanger, comprising:
 a first set of microchannel tubes fluidly configured to fluidly couple to a first working fluid circuit;   a second set of microchannel tubes configured to fluidly couple to a second working fluid circuit fluidly separate from the first working fluid circuit, wherein the first set of microchannel tubes and the second set of microchannel tubes are disposed in an alternating arrangement along a length of the interlaced heat exchanger such that the first set of microchannel tubes and the second set of microchannel tubes are interlaced; and   an integrated header, comprising a first passage, a second passage, and a divider extending between the first passage and the second passage to fluidly separate the first passage and the second passage from one another,   wherein a first microchannel tube of the first set of microchannel tubes is fluidly coupled to the first passage of the integrated header, and a second microchannel tube of the second set of microchannel tubes is fluidly coupled to the second passage of the integrated header.   
     
     
         33 . The interlaced heat exchanger of  claim 32 , wherein the first microchannel tube comprises a first header connection extending from a first body portion of the first microchannel tube, the first header connection is fluidly coupled to the first passage of the integrated header, and the first header connection and the first body portion of the first microchannel tube extend along a common axis. 
     
     
         34 . The interlaced heat exchanger of  claim 33 , wherein the second microchannel tube comprises a second header connection extending from a second body portion of the second microchannel tube, the second header connection is fluidly coupled to the second passage of the integrated header, and the second header connection and the second body portion of the second microchannel tube extend along the common axis. 
     
     
         35 . The interlaced heat exchanger of  claim 34 , wherein the first microchannel tube extends through the second passage, through a slot of the divider, and into the first passage. 
     
     
         36 . The interlaced heat exchanger of  claim 32 , wherein:
 the first microchannel tube comprises a first header connection extending from a first body portion of the first microchannel tube, the first header connection is fluidly coupled to the first passage of the integrated header, and the first header connection is twisted relative to the first body portion of the first microchannel tube, and   the second microchannel tube comprises a second header connection extending from a second body portion of the second microchannel tube, the second header connection is fluidly coupled to the second passage of the integrated header, and the second header connection is twisted relative to the second body portion of the second microchannel tube.   
     
     
         37 . The interlaced heat exchanger of  claim 36 , wherein the first header connection is fluidly coupled to the first passage of the integrated header via a first slot formed in the integrated header, the second header connection is fluidly coupled to the second passage of the integrated header via a second slot formed in the integrated header, and the first slot and the second slot extend along a longitudinal axis of the integrated header. 
     
     
         38 . A heat exchanger for a heating, ventilation, and air conditioning (HVAC) system, comprising:
 a first set of microchannel tubes configured to fluidly couple to a first working fluid circuit of the HVAC system;   a second set of microchannel tubes configured to fluidly couple to a second working fluid circuit of the HVAC system, wherein the first set of microchannel tubes and the second set of microchannel tubes are fluidly separate from one another, and wherein the first set of microchannel tubes and the second set of microchannel tubes are disposed in an alternating arrangement along a length of the heat exchanger; and   an integrated header, wherein the first set of microchannel tubes is fluidly coupled to a first passage defined by the integrated header and the second set of microchannel tubes is fluidly coupled to a second passage defined by the integrated header, and wherein the first passage and the second passage are fluidly separate from one another.   
     
     
         39 . The heat exchanger of  claim 38 , wherein the first passage comprises a first cross-sectional area, the second passage comprises a second cross-sectional area, and the first cross-sectional area and the second cross-sectional area are substantially equal. 
     
     
         40 . The heat exchanger of  claim 38 , wherein:
 a first microchannel tube of the first set of microchannel tubes comprises a first body portion and a first header connection extending from the first body portion, wherein the first header connection is fluidly coupled to the first passage of the integrated header,   a second microchannel tube of the second set of microchannel tubes comprises a second body portion and a second header connection extending from the second body portion, wherein the second header connection is fluidly coupled to the second passage of the integrated header, and   the integrated header comprises a divider extending between the first passage and the second passage to fluidly separate the first passage and the second passage, wherein the first body portion, the second body portion, and the divider extend along a common axis.

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