(19)
(11)EP 3 591 313 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
11.03.2020 Bulletin 2020/11

(43)Date of publication A2:
08.01.2020 Bulletin 2020/02

(21)Application number: 19181391.4

(22)Date of filing:  19.06.2019
(51)International Patent Classification (IPC): 
F25B 1/10(2006.01)
F25B 41/04(2006.01)
F25B 49/02(2006.01)
F25B 5/02(2006.01)
F25B 47/02(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 02.07.2018 US 201816024970

(71)Applicant: Heatcraft Refrigeration Products LLC
Stone Mountain, GA 30087 (US)

(72)Inventors:
  • Hollister, Mike
    Atlanta, GA 30309 (US)
  • ZHA, Shitong
    Snellville, GA 30078 (US)

(74)Representative: Barker Brettell LLP 
100 Hagley Road Edgbaston
Birmingham B16 8QQ
Birmingham B16 8QQ (GB)

  


(54)COOLING SYSTEM


(57) This disclosure relates generally to a cooling system. An example embodiment includes a system (200) including a flash tank (110), a first load (120A), a second load (115), a first compressor (130), a second compressor (125), a first valve (205), and a second valve (135). The flash tank (110) stores a refrigerant. The first and second loads (120A, 115) use the refrigerant to cool first and second spaces. The first compressor (130) compresses the refrigerant from the first load (120A) during a first mode of operation and a flash gas from the flash tank (110) during a second mode of operation. The second compressor (125) compresses a mixture of the refrigerant from the first and second loads (120A, 115) during the first mode of operation. The first valve (205) directs the flash gas from the flash tank (110) to the first compressor (130) during the second mode of operation. The second valve (135) directs the compressed flash gas from the first compressor (130) to the first load (120A) during the second mode of operation to defrost the first load (120A).







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