(19)
(11) EP 2 397 794 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.03.2013 Bulletin 2013/12

(43) Date of publication A2:
21.12.2011 Bulletin 2011/51

(21) Application number: 11170208.0

(22) Date of filing: 16.06.2011
(51) International Patent Classification (IPC): 
F25B 45/00(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

(30) Priority: 18.06.2010 GB 201010219

(71) Applicants:
  • JTL Systems Limited
    Newbury, Berks RG14 5SJ (GB)
  • Ernest West & Beynon Ltd
    Paddock Wood Kent TN12 6BE (GB)
  • Gigiel, Andrew
    Moorlynch Bridgewater Somerset TA7 9BV (GB)
  • Refrigeration Developments and Testing Ltd
    Little Haseley Oxfordshire OX44 7LN (GB)

(72) Inventors:
  • Gigiel, Andrew
    Bridgewater, Somerset TA7 9BY (GB)
  • Lawrence, John
    Newbury, Berkshire RG14 5SJ (GB)
  • Evans, Judith
    Little Haseley, Oxfordshire OX44 7LN (GB)

(74) Representative: Cross, James Peter Archibald 
R.G.C. Jenkins & Co 26 Caxton Street
London SW1H 0RJ
London SW1H 0RJ (GB)

   


(54) Volatile Substance Recovery Method and Apparatus


(57) Refrigerant or other volatile substance is extracted from a refrigeration system by applying a reduced pressure intermittently to it. The reduced pressure may be applied from a reservoir (2) that is evacuated substantially constantly by a vacuum pump (4), the reservoir being connected intermittently to the system. The reduced pressure may be pulsed on and off; this causes instantaneous boiling or flashing of the refrigerant or volatile substance within the system, such that it is extracted as a liquid and vapour mixture. As a result, much of the substance can be extracted largely as liquid, so that the latent heat of evaporation of the liquid is extracted outside the refrigeration system, thereby avoiding excessive cooling within the system.







Search report









Search report