GB2047863A - Method of Operating a Combined Refrigerator and Freezer - Google Patents

Method of Operating a Combined Refrigerator and Freezer Download PDF

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Publication number
GB2047863A
GB2047863A GB8011501A GB8011501A GB2047863A GB 2047863 A GB2047863 A GB 2047863A GB 8011501 A GB8011501 A GB 8011501A GB 8011501 A GB8011501 A GB 8011501A GB 2047863 A GB2047863 A GB 2047863A
Authority
GB
United Kingdom
Prior art keywords
cooling
chamber
freezing
channel
freezing chamber
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.)
Withdrawn
Application number
GB8011501A
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.)
Electrolux Household Appliances Ltd
Original Assignee
Electrolux Ltd
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 Electrolux Ltd filed Critical Electrolux Ltd
Publication of GB2047863A publication Critical patent/GB2047863A/en
Withdrawn legal-status Critical Current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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0681—Details thereof
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0683—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans not of the axial type
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/06—Refrigerators with a vertical mullion

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

A method of operating a combined cooling and freezing apparatus with a cooling chamber (11) and a freezing chamber (10) separated by a vertical wall (27, 29) and with a common refrigerating unit (19, 20, 21) for both chambers. The freezing chamber (10) is cooled by an evaporator (22) and when cooling of the cooling chamber (11) is required, cold air from the freezing chamber circulates through the freezing chamber (10) and a channel (28) bounded on its side facing the freezing chamber (10) by a heat-insulated partition (27) and on its side facing the cooling chamber (11) by a heat-conductive wall (29). The air in the channel (28) is forced by a fan (40, 38) to flow downwards in the channel (28), fan (40, 38) being controlled (42, 43) by a temperature sensor 43 in the cooling chamber (11). <IMAGE>

Description

SPECIFICATION Method of Operating a Combined Refrigerator and Freezer This invention relates to a method of operating a combined refrigerator and freezer having for instance a cooling chamber alongside a freezing chamber and using a common refrigerating unit.
The invention also relates to apparatus for performing the method.
Apparatus is known having two cooled chambers one above the other or side by side and having different temperatures and to generate cold in the chambers by a refrigerating unit for each chamber with a thermostat, which, depending on the chamber temperature controls the respective refrigerating unit. Such refrigerating units are relatively expensive and therefore attempts have been made to operate two cooled chambers at different temperatures by a common refrigerating unit, which had cooling elements in both chambers, and to control the temperatures in the chambers by means of flow controlling means in the conduits to the cooling elements. It is difficult in such an apparatus to control the temperatures of the chambers in the desired way, and the control means is expensive.
Apparatus is also known having a common refrigerating unit, with a cooling element disposed in the chamber with the lowest temperature. A cold flow of air from the last-mentioned chamber is forced through the other chamber, which is at a higher temperature. These known apparatus are complicated and entail high production costs and considerable service costs. In an apparatus in which the freezing chamber air is forced to pass through the cooling chamber the cooling element in the freezing chamber becomes quite rapidly covered with frost and also the cooling chamber air obtains a remarkably low relative humidity, which in most cases is not desirable in the cooling chamber since this causes items in the cooling chamber which are not well wrapped to tend to dry out. They cannot keep their natural humidity.
An object of the invention is to avoid these drawbacks and to provide a relatively simple and cheap method of operating a combined cooling and freezing apparatus, and also to provide such apparatus.
According to this invention there is provided a method of operating a combined cooling and freezing apparatus with a cooling chamber and a freezing chamber separated by a wall and with a common refrigerating unit for cooling both chambers, wherein the freezing chamber is cooled by the evaporator of the refrigerating unit and for cooling the cooling chamber, cold air from the freezing chamber is caused to circulate through the freezing chamber and through a channel between the chambers, that side of the channel facing the freezing chamber being heat-insulated and that side facing the cooling chamber being heat-conductive.
Also according to this invention there is provided a combined cooling and freezing apparatus with a cooling chamber and a freezing chamber separated by a vertical wall and with a common refrigeration unit for cooling both chambers, wherein the evaporator of the refrigerating unit is arranged to cool the freezing chamber and a channel is arranged in the vertical wall which wall has heat insulation between the channel and the cooling chamber means being arranged to cause the freezing chamber air to circulate through the freezing chamber and through the channel and being controlled by a thermostat with a sensitive body in the cooling chamber.
The invention will now be described in more detail by way of example with reference to the drawing, in which Fig. 1 is a front view of a combined cooling and freezing apparatus; Fig.2 is a side view; Fig. 3 is a horizontal section; Fig. 4 is a vertical section on the line IV--IV of Fig. 3; Fig. 5 is a detail of Fig. 4 shown in another position; Fig. 6 shows another embodiment of this detail.
In Figs. 1 to 3, a combined cooling and freezing apparatus has a freezing chamber 10 and a cooling chamber 11. Each has a door 12, 13 with a handle 14,15. Below the doors 12,13 is a vent louvre 16 in front of an air channel 17 (Fig. 4) for supply of cooling air to a common refrigerating unit for cooling both chambers.
As seen in Fig. 4 the apparatus has a refrigerating unit with a compressor 1 9 connected to a mains supply 18, and a condenser -21 cooled by a fan 20. Cooling elements in the form of pipe coils 22 are arranged in heatconductive contact with an inner lining 23 of the freezing chamber 10, the lining being of heatconductive material and surrounded by heatinsulating outer walls 24. The refrigerating unit is controlled by a thermostat 25 with a sensitive body 26 in the freezing chamber 10.
The freezing chamber 10 is separated from the cooling chamber 11 by a partition, which comprises a heat-insulating wall 27, an air channel 28 and a wall 29 of the air channel made of heat-conductive material. The heat-conductive wall 29 entirely separates the air of the freezing chamber 10 from the air of the cooling chamber 11. In its upper part the channel 28 is in connection with the freezing chamber 10 by a labyrinth. The connection is formed by an opening 30 siightly below the top wall of the freezing chamber 10 between a thin insulating part 31 and the main part of the heat-insulating partition 27. A channel 32 extends in the plane of the partition 27 between the insulating part 31 and a thinner insulating plate 33 directed upwardly from the partition 27, above which there is a connection 34 to the channel 28.
In the lower part of the partition 27 is a circular outlet 35 from the channel 28. The edge of this opening adjacent the freezing chamber 10 is formed with a ring 36 against which a valve body rests. The edge may be slightly inclined, with its lower part extending further into the freezing than its upper part. A ring 37 of a fan wheel 38 constitutes the valve body. The fan wheel is mounted on a slidable shaft 39 with a rotor 40 of an electric motor 41.
To cool the cooling chamber 11 flow of freezing chamber air through the channel 28 is needed. The motor 41 is operated and the fan circulates the air as indicated by arrows in Fig. 4.
When the cooling need for the cooling chamber 11 ceases, the motor 41 is stopped and the fan wheel 38 moves to close the opening 35.
The fan motor 41 is connected to the mains supply 1 8 through a thermostat 42 with a sensitive body 43 in the cooling chamber 11. In Fig. 4 the cooling thermostat 42 is shown in its on position in which leads 44, 45 are live and the fan motor 41 is operating. Then cold air flows through the channel 28 and the cooling chamber 11 is cooled by way of the heat conductive wall 29.
When the cooling need in the cooling chamber 11 ceases, the thermostat 42 disconnects the fan motor 41 and instead makes the leads 44, 46 live. These leads pass to a small heating element 47 arranged at the lower part of the heatconductive wall 29. At normal temperatures in both the freezing and cooling chambers the surface of the wall 29 in the chamber 11 is automatically defrosted because its temperature is above OOC when the air is not flowing in the channel 28. However, it might be necessary to supply some extra heat through the element 47 if a particularly low temperature is maintained in the cooling chamber 11.

Claims (13)

Claims
1. A method of operating a combined cooling and freezing apparatus with a cooling chamber and a freezing chamber separated by a wall and with a common refrigerating unit for cooling both chambers, wherein the freezing chamber is cooled by the evaporator of the refrigerating unit and, for cooling the cooling chamber, cold air from the freezing chamber is caused to circulate through the freezing chamber and through a channel between the chambers, that side of the channel facing the freezing chamber being heat-insulated and that side facing the cooling chamber being heat-conductive.
2. A method according to claim 1 wherein cold air in the channel is caused to flow downwards by driving means controlled by the temperature in the cooling chamber.
3. A method according to claim 1 or claim 2, wherein the refrigerating unit is controlled by a thermostat depending on the cooling need in the freezing chamber.
4. A combined cooling and freezing apparatus with a cooling chamber and a freezing chamber separated by a vertical wall and with a common refrigerating unit for cooling both chambers, wherein the evaporator of the refrigerating unit is arranged to cool the freezing chamber and a channel is arranged in the vertical wall, which wall has heat insulation between the channel and the freezing chamber but is heat conductive between the channel and the cooling chamber, means being arranged to cause the freezing chamber air to circulate through the freezing chamber and through the channel and being controlled by a thermostat with a sensitive body in the cooling chamber.
5. Apparatus according to claim 4, wherein the connection between the freezing chamber and the channel is formed by a labyrinth in the upper part of the wall.
6. Apparatus according to claim 4 or claim 5 wherein the heat-insulating wall in its lower part has an opening with a valve.
7. Apparatus according to claim 6 wherein a fan is arranged in the opening and controlled by the temperature of the cooling chamber.
8. Apparatus according to claim 7 wherein the fan wheel is axially slidable and provided with means which in the idle position of the fan forms a closing valve body.
9. Apparatus according to any of claims 4 to 8 controlled by a thermostat with a sensitive body in the freezing chamber.
10. Apparatus according to any of claims 4 to 9 wherein the cooling chamber thermostat has connection to a heating element disposed at the vertical wall in the cooling chamber, the element in the off-position of the thermostat being connected to a current source.
11. Apparatus according to claim 10 wherein a groove is disposed below the cooled surface in the cooling chamber and has a conduit leading to a collecting place for melt water.
12. Apparatus according to any of claims 4 to 11 wherein a surface of the heat-conductive wall is corrugated or has fins, on one or both sides.
13. A combined cooling and freezing apparatus constructed and arranged substantially as herein described and shown in the drawings.
GB8011501A 1979-04-09 1980-04-08 Method of Operating a Combined Refrigerator and Freezer Withdrawn GB2047863A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7903117A SE7903117L (en) 1979-04-09 1979-04-09 KIT AND DEVICE FOR A COMBINED REFRIGERATOR AND FREEZER FURNITURE

Publications (1)

Publication Number Publication Date
GB2047863A true GB2047863A (en) 1980-12-03

Family

ID=20337763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8011501A Withdrawn GB2047863A (en) 1979-04-09 1980-04-08 Method of Operating a Combined Refrigerator and Freezer

Country Status (4)

Country Link
DE (2) DE8009512U1 (en)
FR (1) FR2454068A1 (en)
GB (1) GB2047863A (en)
SE (1) SE7903117L (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659065A (en) * 1984-01-28 1987-04-21 Hydra-Tight Limited Bolt tensioning apparatus
EP1162420A1 (en) * 2000-06-08 2001-12-12 Whirlpool Corporation Refrigerator
EP1167901A1 (en) * 2000-06-06 2002-01-02 Electrolux Professional S.P.A. Refrigerator cabinet with separate food storage rooms
EP1255233A2 (en) * 2001-04-30 2002-11-06 F.A.S. International S.p.A. Refrigerated vending machine
ES2399016R1 (en) * 2011-09-08 2013-07-26 Fagor S Coop Refrigerator appliance

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401669A1 (en) * 1984-01-19 1985-08-01 Plastik-Maschinenbau Gmbh & Co Kg Entwicklungsgesellschaft, 5489 Kelberg Sliding component in the form of a section from a plastic profile made from polyethylene
DE3700468A1 (en) * 1987-01-09 1988-08-11 Kurt Sorschak Sales vehicle for chilled goods
IT1220739B (en) * 1988-01-29 1990-06-21 Zanussi A Spa Industrie MULTI-TEMPERATURE REFRIGERANT APPLIANCE WITH SINGLE-COMPRESSOR REFRIGERANT CIRCUIT AND SINGLE THERMOSTATIC TEMPERATURE REGULATION
DE3807646A1 (en) * 1988-03-09 1989-09-21 Fritz Hakemann Refrigerating furniture
DE3814238A1 (en) * 1988-04-27 1989-11-09 Holzer Walter NOFROST COOLING METHOD FOR A COOLING AREA OVER 0 (DEGREE) C
IT1220753B (en) * 1988-05-23 1990-06-21 Zanussi A Spa Industrie REFRIGERANT APPLIANCE WITH MORE COMPARTMENTS AT RESPECTIVE TEMPERATURES
US11828519B2 (en) 2018-09-04 2023-11-28 Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. Refrigerator
EP3885679A1 (en) * 2020-03-24 2021-09-29 Electrolux Appliances Aktiebolag Refrigerator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1176504A (en) * 1916-01-10 1916-03-21 Nicholas Wasylyszyn Adjustable horseshoe.
US2543494A (en) * 1944-12-22 1951-02-27 Rush S Hartman Refrigerating device
US3359751A (en) * 1966-10-14 1967-12-26 Admiral Corp Two temperature refrigerator
FR2100982B1 (en) * 1970-06-26 1974-03-01 Roberti Henri
US3834177A (en) * 1972-12-07 1974-09-10 Philco Ford Corp Refrigerator cabinet structure and its manufacture

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659065A (en) * 1984-01-28 1987-04-21 Hydra-Tight Limited Bolt tensioning apparatus
EP1167901A1 (en) * 2000-06-06 2002-01-02 Electrolux Professional S.P.A. Refrigerator cabinet with separate food storage rooms
EP1162420A1 (en) * 2000-06-08 2001-12-12 Whirlpool Corporation Refrigerator
EP1255233A2 (en) * 2001-04-30 2002-11-06 F.A.S. International S.p.A. Refrigerated vending machine
EP1255233A3 (en) * 2001-04-30 2004-06-30 F.A.S. International S.p.A. Refrigerated vending machine
ES2399016R1 (en) * 2011-09-08 2013-07-26 Fagor S Coop Refrigerator appliance

Also Published As

Publication number Publication date
DE3013360A1 (en) 1980-10-23
DE8009512U1 (en) 1982-05-13
FR2454068A1 (en) 1980-11-07
SE7903117L (en) 1980-10-10

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)