GB958483A - Refrigerator - Google Patents
RefrigeratorInfo
- Publication number
- GB958483A GB958483A GB14703/63A GB1470363A GB958483A GB 958483 A GB958483 A GB 958483A GB 14703/63 A GB14703/63 A GB 14703/63A GB 1470363 A GB1470363 A GB 1470363A GB 958483 A GB958483 A GB 958483A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- resistance
- heater
- compartment
- air
- 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
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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
-
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
-
- 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
- F25D2317/065—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 air return
- F25D2317/0653—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 air return through the mullion
-
- 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
- F25D2400/04—Refrigerators with a horizontal mullion
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
Abstract
958,483. Refrigerators; defrosting. GENERAL MOTORS CORPORATION. April 11, 1963 [April 30, 1962], No. 14703/63. Heading F4H. In a refrigerator having a freezer compartment and a storage compartment between which air is circulated, a thermo-responsive defrost control device is arranged to be subject to the evaporator temperature, the temperature of the air passing from the storage compartment, the flow of this air being subject to frost accumulation on the evaporator, and the temperature of an electric heater. As shown in Figs. 1 and 3, the refrigerator comprises a storage compartment 32, a freezer compartment 30, a finned evaporator 42 beneath a false bottom wall 40 in the freezer compartment and a fan 90 at the rear of the latter compartment. Air from the storage compartment is drawn through passages 64 above the top wall 54 of that compartment and forwardly over the sides of the evaporator before being drawn rearwardly over the central portion of the evaporator to the inlet of fan 90 together with an air stream drawn from the freezer compartment through apertures 84. The fan 90 discharges through an outlet 96 to the freezer compartment and through passages 121, 123, 125 and 137 under the control of a valve 149 to the storage compartment. A container 250 is mounted on the evaporator at the point thereof which is first contacted by air from the storage compartment (see Fig. 3). The container 250 houses a bimetallic switch 187 and has an electric heater 274 secured thereto (Figs. 5 and 7), the switch 187 being movable between a contact 185, in which position it energizes the compressor motor 167 and the fan motor 94, and a contact 254, in which position it energizes an electric defrost heater 260. When the switch 187 abuts contact 185 the compressor and fan motors are cycled by a switch 181 controlled by a temperature sensitive element 222 responsive to the temperature of the freezing compartment. In the embodiment of Fig. 5 the heater 274 is in series with a resistance 266 and a switch 238 which is operated by a projection 155 on the stem 147 of valve 149 (see Fig. 1). The resistance 266 has a negative temperature coefficient and is mounted in a capsule 267 (Fig. 1) on the rear of the refrigerator cabinet so as to be responsive to ambient air temperature. During normal operation the heat from the warm air from the storage compartment contacting the container 250 and the heat from the heater 274 is sufficient to maintain switch 187 against contact 185, but when frost accumulates on the evaporator and container 250 the flow of warm air over the latter is reduced. Thus, when the switch 238 opens due to valve 149 reaching its wide-open position, the switch 187 cools and moves to contact 254 to initiate defrosting. In low ambient temperature conditions the switch 238 remains closed since compartment 32 is sufficiently cold and valve 149 does not open sufficiently but the resistance 266 decreases the current to the heater 274 enabling the switch 187 to cool and initiate defrosting as before. In another embodiment (Fig. 6, not shown), the resistance 266 is omitted and a resistance having a positive temperature coefficient is connected in parallel with the switch 238, so that at low ambient temperatures a short defrost period occurs and vice versa. In Fig. 7, the switch 238 is omitted and a resistance 359 having a positive temperature coefficient is connected in series and a resistance 351 having a negative temperature coefficient in parallel with the heater, the resistances 351 and 359 combining to reduce the current to the heater as the ambient temperature rises. In a final embodiment (Fig. 8, not shown), the valve-operated switch 238 is connected in series with the resistance 351 of Fig. 7 and the resistance 359 is omitted so that the heater is by-passed and switch 187 operated when the switch 238 is closed. The resistance 351 delays operation of the switch 187 more in low ambient temperatures than in high. The switch 187 may be adapted to operate a reversing valve, to initiate hot gas defrosting, rather than the heater 260.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US190863A US3138006A (en) | 1962-04-30 | 1962-04-30 | Refrigerating apparatus including defrost means |
Publications (1)
Publication Number | Publication Date |
---|---|
GB958483A true GB958483A (en) | 1964-05-21 |
Family
ID=22703115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14703/63A Expired GB958483A (en) | 1962-04-30 | 1963-04-11 | Refrigerator |
Country Status (2)
Country | Link |
---|---|
US (1) | US3138006A (en) |
GB (1) | GB958483A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3316729A (en) * | 1965-07-19 | 1967-05-02 | Gen Motors Corp | Defrosting system with food compartment shunt switch |
DE2010717A1 (en) * | 1970-03-06 | 1971-09-23 | Necchi Societä per Azioni, Pavia (Italien) | Lubricating device for encapsulated motor-compressor units |
US3786227A (en) * | 1972-11-15 | 1974-01-15 | Thermo King Corp | Heat exchanger defrost apparatus |
US4531376A (en) * | 1981-06-26 | 1985-07-30 | Alsenz Richard H | Refrigerator defrost control |
US4407141A (en) * | 1982-01-04 | 1983-10-04 | Whirlpool Corporation | Temperature sensing means for refrigerator |
US4530218A (en) * | 1984-02-27 | 1985-07-23 | Whirlpool Corporation | Refrigeration apparatus defrost control |
GB2251295B (en) * | 1990-12-31 | 1994-09-28 | Samsung Electronics Co Ltd | Defrost assembly |
DE102008054934A1 (en) * | 2008-12-18 | 2010-07-01 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration device and method for controlling the temperature in a refrigeration device |
ITTO20111240A1 (en) * | 2011-12-30 | 2013-07-01 | Indesit Co Spa | METHOD AND DEVICE FOR CONTROL OF THE DEFROSTING PHASE OF A REFRIGERANT APPLIANCE AND A REFRIGERANT APPLIANCE THAT IMPLEMENTS THIS METHOD |
KR102289289B1 (en) * | 2017-03-10 | 2021-08-13 | 엘지전자 주식회사 | Refrigerator |
US11619431B2 (en) | 2018-04-13 | 2023-04-04 | Carrier Corporation | Method of defrosting a multiple heat absorption heat exchanger refrigeration system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2400334A (en) * | 1944-06-29 | 1946-05-14 | Gen Electric | Refrigerating system |
US2876629A (en) * | 1954-07-30 | 1959-03-10 | Alco Valve Co | Control for temperature changing device |
US2900802A (en) * | 1955-07-12 | 1959-08-25 | Texas Instruments Inc | Control for refrigerator |
US2988896A (en) * | 1957-02-01 | 1961-06-20 | Carrier Corp | Heat pump defrost control |
US2982115A (en) * | 1958-09-23 | 1961-05-02 | Gen Motors Corp | Refrigerating apparatus |
US3013400A (en) * | 1959-07-20 | 1961-12-19 | Gen Motors Corp | Defrost control for refrigerating apparatus |
US3013399A (en) * | 1959-08-31 | 1961-12-19 | Gen Motors Corp | Refrigerating apparatus |
US3010288A (en) * | 1959-09-21 | 1961-11-28 | Gen Motors Corp | Refrigerating apparatus |
US3023589A (en) * | 1959-11-16 | 1962-03-06 | Gen Motors Corp | Refrigerating apparatus |
-
1962
- 1962-04-30 US US190863A patent/US3138006A/en not_active Expired - Lifetime
-
1963
- 1963-04-11 GB GB14703/63A patent/GB958483A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3138006A (en) | 1964-06-23 |
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