(19)
(11) EP 4 818 624 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.10.2026 Bulletin 2026/43

(43) Date of publication A2:
07.10.2026 Bulletin 2026/41

(21) Application number: 26199471.9

(22) Date of filing: 19.05.2022
(51) International Patent Classification (IPC): 
F28F 9/02(2006.01)
(52) Cooperative Patent Classification (CPC):
F28F 9/0204; F28F 9/0275; F28D 7/1607; F28F 2260/02; F28D 2021/0068; F25B 2339/0242; F25B 2339/046; F25B 2339/047; F25B 39/04; F25B 39/02
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 20.05.2021 US 202163190843 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
22805462.3 / 4352438

(71) Applicant: Intergalactic Spaceworx, LLC
St. George, UT 84790 (US)

(72) Inventors:
  • SORENSEN, Cole
    Hurricane, 84737 (US)
  • KERLIN, Andrew
    St. George, 84790 (US)

(74) Representative: Openshaw & Co. 
8 Castle Street
Farnham, Surrey GU9 7HR
Farnham, Surrey GU9 7HR (GB)

   


(54) REFRIGERANT HEAT EXCHANGER WITH INTEGRAL MULTIPASS AND FLOW DISTRIBUTION TECHNOLOGY


(57) A microtube heat exchanger for cooling or heating fluid of a heat exchange system, the microtube heat exchanger comprising a tube stack comprising a plurality of microtubes extending between a first end and a second end. The microtube heat exchanger also comprisesa first header including a first header surface provided at the first end of the tube stack, and wherein the first header is configured to provide a refrigerant fluid to the tube stack in a first direction; and a second header including a second header surface provided at the second end of the tube stack, and wherein the second header is configured to provide the refrigerant fluid to the tube stack in a second direction. The first header surface comprises a first surface, a second surface larger than the first surface, and a third surface larger than the second surface, wherein the second surface is at least 25% larger than the first surface, and wherein the third surface is at least 15% larger than the second surface.





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