GB1481452A - Cryogenic freezer - Google Patents

Cryogenic freezer

Info

Publication number
GB1481452A
GB1481452A GB40479/74A GB4047974A GB1481452A GB 1481452 A GB1481452 A GB 1481452A GB 40479/74 A GB40479/74 A GB 40479/74A GB 4047974 A GB4047974 A GB 4047974A GB 1481452 A GB1481452 A GB 1481452A
Authority
GB
United Kingdom
Prior art keywords
motor
speed
potentiometer
lines
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB40479/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Publication of GB1481452A publication Critical patent/GB1481452A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F25D3/11—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air with conveyors carrying articles to be cooled through the cooling space

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

1481452 Centrifugal blowers AIR PRODUCTS & CHEMICALS Inc 17 Sept 1974 [20 Sept 1973] 40479/74 Heading F1C [Also in Division B8 and F4] A freezing tunnel includes an endless conveyer belt 25 passing through successive stationary sections 19 and removable sections 18, the removable sections being able to be dismantled for cleaning purposes. The majority of the sections 19 include recirculation fans 37, but one section includes a liquid nitrogen spray device 75A, and at least one other additional blower 70 which controls the passage of nitrogen along the tunnel countercurrent to the articles on the conveyer. The blower 70 includes a casing 71 enclosing a centrifugal fan 72 driven by a variable speed motor 74. The motor 74 is driven by a D.C. power supply 100 of the silicon controlled rectifier type. The speed of the fan 72 is automatically varied as a function of the flow-rate of the liquid nitrogen being injected into the freezing tunnel. The control system comprises a pressure sensing line 77, the signal from which passes via a restrictive orifice device 82 and a bellows 87 to actuate a potentiometer 88. The D.C. power supply 100 receives an A.C. input voltage through lines 103 and supplies a constant D.C. voltage through lines 101 to the motor field, while supplying a variable D.C. voltage through lines 102 to the motor armature so as to vary the speed of the motor 74. In case of malfunction, the control system may also include a mode selector switch 113 and a manually variable potentiometer 104. A maximum speed potentiometer 116 is also provided. The freezing tunnel may also include a spray nozzle 36A for introducing liquid nitrogen upstream of the spray device 75A.
GB40479/74A 1973-09-20 1974-09-17 Cryogenic freezer Expired GB1481452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US399769A US3892104A (en) 1973-09-20 1973-09-20 Cryogenic freezer with variable speed gas control system

Publications (1)

Publication Number Publication Date
GB1481452A true GB1481452A (en) 1977-07-27

Family

ID=23580886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40479/74A Expired GB1481452A (en) 1973-09-20 1974-09-17 Cryogenic freezer

Country Status (8)

Country Link
US (1) US3892104A (en)
JP (1) JPS5548233B2 (en)
BE (1) BE818982A (en)
CA (1) CA998538A (en)
DE (1) DE2441757C3 (en)
FR (1) FR2244973B1 (en)
GB (1) GB1481452A (en)
NL (1) NL178720C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782668A (en) * 1986-05-12 1988-11-08 The Boc Group Plc Food freezing tunnel
GB2253245A (en) * 1991-02-28 1992-09-02 Hamworthy Heating Ltd Control means for a pump
CN107883631A (en) * 2017-12-12 2018-04-06 广州鲜之源生态冷链技术有限公司 A kind of multinode temperature control device and regulation and control method

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1531461A (en) * 1975-02-10 1978-11-08 Boc International Ltd Method and apparatus for cooling or freezing articles
US4086783A (en) * 1976-12-15 1978-05-02 Hollymatic Corporation Refrigerating chamber
US4171625A (en) * 1977-11-02 1979-10-23 Formax, Inc. Cryogenic freezing tunnel
US4165618A (en) * 1978-04-24 1979-08-28 Lewis Tyree Jr Treatment with liquid cryogen
US4229947A (en) * 1979-08-06 1980-10-28 Air Products And Chemicals, Inc. Cryogenic freezer
US4414823A (en) * 1980-03-17 1983-11-15 Air Products And Chemicals, Inc. Cryogenic freezer
US4276753A (en) * 1980-05-19 1981-07-07 Formax, Inc. Cryogenic freezing tunnel control system
FR2506914A1 (en) * 1981-05-29 1982-12-03 Keller Jean Paul Freezing and packing mixed small units of diverse food prods. - using chambers and connected conveyor tunnel supplied with cryogenic gas
FR2525747A2 (en) * 1981-05-29 1983-10-28 Keller Jean Paul PROCESS FOR FREEZING AND PACKAGING INDIVIDUAL PRODUCTS, AND DEVICE FOR IMPLEMENTING THIS PROCESS
US4451002A (en) * 1981-12-07 1984-05-29 Air Products And Chemicals, Inc. Temperature actuated valve and phase separation method
US4441327A (en) * 1981-12-07 1984-04-10 Air Products And Chemicals, Inc. Temperature actuated valve and phase separation method
SE8206627L (en) * 1982-11-22 1984-05-23 Sture Astrom freezing tunnel
US4475351A (en) * 1983-08-09 1984-10-09 Air Products And Chemicals, Inc. Dual-flow cryogenic freezer
US4528819A (en) * 1984-05-08 1985-07-16 Air Products And Chemicals, Inc. Exhaust control for cryogenic freezer
US4580413A (en) * 1985-06-06 1986-04-08 Air Products And Chemicals, Inc. Pressurized fluid lift system for a cryogenic freezer
AT395933B (en) * 1986-02-17 1993-04-26 Welz Franz Transporte METHOD FOR ADJUSTMENT OR MAINTENANCE OF A REFRIGERATED ATMOSPHERES IN A REFRIGERATED TANK AND REFRIGERATED TANK FOR CARRYING OUT THE PROCEDURE
FR2600406B1 (en) * 1986-06-18 1988-08-05 Air Liquide COOLING PROCESS AND TUNNEL
US4800728A (en) * 1987-09-18 1989-01-31 Air Products And Chemicals, Inc. Method and apparatus for gas flow control in a cryogenic freezer
US4912943A (en) * 1988-12-14 1990-04-03 Liquid Air Corporation Method and apparatus for enhancing production capacity and flexibility of a multi-tier refrigeration tunnel
US5054292A (en) * 1990-07-13 1991-10-08 Air Products And Chemicals, Inc. Cryogenic freezer control
US5605049A (en) * 1991-09-13 1997-02-25 Air Products And Chemicals, Inc. Exhaust system for a cryogenic freezer
GB9217189D0 (en) * 1992-08-13 1992-09-23 Air Prod & Chem Control system for freezer
GB9402884D0 (en) * 1994-02-15 1994-04-06 Air Prod & Chem Tunnel freezer
US5444985A (en) * 1994-05-13 1995-08-29 Liquid Carbonic Corporation Cryogenic tunnel freezer
US5577392A (en) * 1995-01-17 1996-11-26 Liquid Carbonic Corporation Cryogenic chiller with vortical flow
ZA962924B (en) * 1995-05-24 1996-10-25 Pillsbury Co System for producing a filled rolled dough product
US5606861A (en) * 1995-06-07 1997-03-04 Air Liquide America Corporation Crossflow cryogenic freezer and method of use
US5921091A (en) * 1996-10-09 1999-07-13 American Air Liquide, Incorporated Liquid air food freezer and method
US5765381A (en) * 1997-03-04 1998-06-16 Air Liquide America Corporation Multitier crossflow cryogenic freezer and method of use
US6389828B1 (en) * 2000-03-15 2002-05-21 Michael R. Thomas Cryogenic cooling chamber apparatus and method
US6363730B1 (en) * 2000-03-15 2002-04-02 The Conair Group, Inc. Method and apparatus for cryogenic cooling
US6497106B2 (en) 2001-01-17 2002-12-24 Praxair Technology, Inc. Method and apparatus for chilling a food product
DE10353046A1 (en) * 2003-11-13 2005-06-09 Lessing, Jürgen Cooling device, in particular for cooling cold rooms
US7374579B2 (en) * 2004-08-18 2008-05-20 Cargill, Incorporated System for extruding, cutting in strands, freezing, and chopping a ground food product and method thereof
US7197883B2 (en) * 2005-05-06 2007-04-03 Praxair Technology, Inc. Cooling or heating with multi-pass fluid flow
US7693583B2 (en) * 2006-11-30 2010-04-06 Honeywell International Inc. HVAC zone control panel with constant function buttons
US7913180B2 (en) * 2006-11-30 2011-03-22 Honeywell International Inc. HVAC zone control panel with mode navigation
US7558648B2 (en) * 2006-11-30 2009-07-07 Honeywell International Inc. HVAC zone control panel with zone configuration
US7693591B2 (en) * 2006-11-30 2010-04-06 Honeywell International Inc. HVAC zone control panel with checkout utility
US20080128523A1 (en) * 2006-11-30 2008-06-05 Honeywell International Inc. Hvac zone control panel
US7904830B2 (en) 2006-11-30 2011-03-08 Honeywell International Inc. HVAC zone control panel
US7957839B2 (en) 2006-12-29 2011-06-07 Honeywell International Inc. HVAC zone controller
JP4636032B2 (en) * 2007-02-01 2011-02-23 トヨタ自動車株式会社 Power supply
US7766246B2 (en) * 2007-03-15 2010-08-03 Honeywell International Inc. Variable speed blower control in an HVAC system having a plurality of zones
US7819331B2 (en) * 2007-04-13 2010-10-26 Honeywell International Inc. HVAC staging control
US20090019869A1 (en) * 2007-07-19 2009-01-22 Girard John M System and method for vapor control in cryogenic freezers
US20100273121A1 (en) * 2009-04-27 2010-10-28 Gleason James M Oven exhaust fan system and method
FR2980956B1 (en) * 2011-10-05 2014-01-10 Air Liquide SYSTEM ENHANCING CRYING PROBLEMS IN IMPROVED FREEZING TUNNELS
US8904811B2 (en) * 2012-11-15 2014-12-09 Linde Aktiengesellschaft Baffle controlled oscillating flow freezer
EP3405045B1 (en) * 2016-01-20 2021-08-11 Praxair Technology, Inc. Method for cryogenically cooling food product
AU2019219837A1 (en) * 2019-08-23 2021-03-11 Golden Produce I.P. Pty Ltd Sequential cooling tunnel and method of use

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2128090A (en) * 1936-12-28 1938-08-23 Siemens Ag Refrigerating apparatus of the compression type
US2904254A (en) * 1954-01-12 1959-09-15 Bahnson Co Cooling and humidifying system
US3613386A (en) * 1970-03-23 1971-10-19 Air Prod & Chem Cryogenic freezer control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782668A (en) * 1986-05-12 1988-11-08 The Boc Group Plc Food freezing tunnel
GB2253245A (en) * 1991-02-28 1992-09-02 Hamworthy Heating Ltd Control means for a pump
GB2253245B (en) * 1991-02-28 1994-10-19 Hamworthy Heating Ltd Flow related control means for a pump
CN107883631A (en) * 2017-12-12 2018-04-06 广州鲜之源生态冷链技术有限公司 A kind of multinode temperature control device and regulation and control method

Also Published As

Publication number Publication date
BE818982A (en) 1974-12-16
JPS5056646A (en) 1975-05-17
NL7411500A (en) 1975-03-24
US3892104A (en) 1975-07-01
JPS5548233B2 (en) 1980-12-04
CA998538A (en) 1976-10-19
NL178720C (en) 1986-05-01
DE2441757A1 (en) 1975-04-03
DE2441757C3 (en) 1981-10-22
NL178720B (en) 1985-12-02
FR2244973B1 (en) 1978-10-27
DE2441757B2 (en) 1981-02-12
FR2244973A1 (en) 1975-04-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee