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GB1039103A - An improved method of refrigerating an enclosed space having an access opening - Google Patents

An improved method of refrigerating an enclosed space having an access opening

Info

Publication number
GB1039103A
GB1039103A GB10391/63A GB1039163A GB1039103A GB 1039103 A GB1039103 A GB 1039103A GB 10391/63 A GB10391/63 A GB 10391/63A GB 1039163 A GB1039163 A GB 1039163A GB 1039103 A GB1039103 A GB 1039103A
Authority
GB
United Kingdom
Prior art keywords
evaporator
dampers
heater
air
evaporators
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
GB10391/63A
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.)
Dual Jet Refrigeration Co
Original Assignee
Dual Jet Refrigeration Co
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 Dual Jet Refrigeration Co filed Critical Dual Jet Refrigeration Co
Publication of GB1039103A publication Critical patent/GB1039103A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Defrosting Systems (AREA)

Abstract

1,039,103. Refrigerators; defrosting. DUAL JET REFRIGERATION CO. March 15, 1963 [April 9, 1962], No. 10391/63. Heading F4H. In an open-fronted refrigerator in which air is circulated in inner and outer channels in the walls of the cabinet and is projected as separate panels across the front opening, the inner channel contains an evaporator which is defrosted for short periods of time at short time intervals and for long periods of time at long time intervals. As shown, three channels are provided, the inner channel containing an evaporator 50 and the intermediate channel an evaporator 53. The evaporators form part of the refrigeration system of Fig. 3 (not shown) in which evaporator 50 is arranged to be defrosted by hot gas supplied through a line 132 having a heater 134 and valves 122 and 122a are provided for cutting off liquid refrigerant flow to evaporators 50 and 53 respectively. The heater 134 is located immediately upstream of the outlet of the inner air panel and the inner and intermediate channels have dampers 202, 201 and 203, 204 upstream and downstream of their respective evaporators. At three hourly intervals valve 122 is closed, heater 134 is energized, dampers 201-204 are closed and hot gas is supplied to evaporator 50 for about three minutes. Upon termination of hot gas flow, dampers 201-204 and valve 122 are sequentially opened and heater 134 is turned off so that normal operation is resumed. Before the next defrost cycle valve 122a is opened to supply refrigerant to evaporator 53 to cool the intermediate air panel, the valve being closed before the defrost cycle is initiated. At about twenty-four hourly intervals the above cycle is repeated except that hot gas is supplied to evaporator 50 for about seventeen minutes. In a modification (Fig. 1, not shown), the dampers 76, 78 and 86, 88 upstream and downstream of the evaporators are so associated with cross-over channels that, between hot-gas defrosts, relatively warm air from the intermediate air panel may be circulated over evaporator 50 while air from the inner panel circulates over evaporator 53.
GB10391/63A 1962-04-09 1963-03-15 An improved method of refrigerating an enclosed space having an access opening Expired GB1039103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US186019A US3122892A (en) 1962-04-09 1962-04-09 Refrigerated display cabinet and method of operation

Publications (1)

Publication Number Publication Date
GB1039103A true GB1039103A (en) 1966-08-17

Family

ID=22683332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10391/63A Expired GB1039103A (en) 1962-04-09 1963-03-15 An improved method of refrigerating an enclosed space having an access opening

Country Status (2)

Country Link
US (1) US3122892A (en)
GB (1) GB1039103A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163244A (en) * 1984-08-13 1986-02-19 Sanden Corp Refrigerated display cabinet

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226945A (en) * 1964-11-02 1966-01-04 Bernard J Spencer Defrost system for self-service refrigerated display cases
JPS53132848A (en) * 1977-04-25 1978-11-20 Hitoshi Karashima Defroster for refrigerating and cold storage
US4144720A (en) * 1977-04-25 1979-03-20 Tyler Refrigeration Corporation Air defrost system using secondary air band components
US4283922A (en) * 1978-07-26 1981-08-18 Tyler Refrigeration Corporation Air defrost system using secondary air band components
US4295340A (en) * 1979-02-14 1981-10-20 Tyler Refrigeration Corporation Refrigerated display case having ambient air defrost
USRE31909E (en) * 1979-02-14 1985-06-11 Tyler Refrigeration Corporation Refrigerated display case having ambient air defrost
US4449374A (en) * 1981-01-19 1984-05-22 Tyler Refrigeration Corporation Combination hot gas and air defrost refrigerated display case
CA1240165A (en) * 1984-10-24 1988-08-09 Tsutomu Tanaka Low-temperature showcase
GB2167543B (en) * 1984-11-26 1988-09-21 Sanden Corp Refrigerated display cabinet
GB2168137B (en) * 1984-12-11 1988-12-14 Sanden Corp Refrigerated display cabinet
KR960002563B1 (en) * 1986-03-15 1996-02-22 산덴 가부시끼가이샤 Refrigerated display cabinet
JPH01144783U (en) * 1988-03-28 1989-10-04
US5000258A (en) * 1988-07-19 1991-03-19 Sanden Corporation Fin-tube heat exchanger
US5475987A (en) * 1994-11-17 1995-12-19 Delaware Medical Formation, Inc. Refrigerated display case apparatus with enhanced airflow and improved insulation construction
JP2006242449A (en) * 2005-03-02 2006-09-14 Sanden Corp Showcase
NZ551765A (en) * 2006-12-01 2008-05-30 Rayhill Ltd Equipment cabinet
US20090229796A1 (en) * 2008-03-13 2009-09-17 Williams Arthur R Cylindrical bernoulli heat pumps
US8997507B2 (en) * 2012-10-22 2015-04-07 Whirlpool Corporation Low energy evaporator defrost
CN207898299U (en) * 2017-07-07 2018-09-25 开利公司 Refrigerated display case

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196291A (en) * 1939-04-19 1940-04-09 Drayer & Hanson Inc Refrigerator defrosting system
US2526379A (en) * 1949-03-09 1950-10-17 Gen Electric Defrosting arrangement for refrigerating systems
US3063254A (en) * 1960-11-09 1962-11-13 Hussmann Refrigerator Co Food merchandiser
US3063252A (en) * 1961-08-17 1962-11-13 Lamb Frank Gilbert Upright refrigerator showcase

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163244A (en) * 1984-08-13 1986-02-19 Sanden Corp Refrigerated display cabinet

Also Published As

Publication number Publication date
US3122892A (en) 1964-03-03

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