EP2373939B1 - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
EP2373939B1
EP2373939B1 EP09775152.3A EP09775152A EP2373939B1 EP 2373939 B1 EP2373939 B1 EP 2373939B1 EP 09775152 A EP09775152 A EP 09775152A EP 2373939 B1 EP2373939 B1 EP 2373939B1
Authority
EP
European Patent Office
Prior art keywords
heater
refrigerator
dispenser
dispenser casing
door
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.)
Active
Application number
EP09775152.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2373939A2 (en
Inventor
Yufa Bai
Liang Gao
Songtao Lu
Qiwu Zhu
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2373939A2 publication Critical patent/EP2373939A2/en
Application granted granted Critical
Publication of EP2373939B1 publication Critical patent/EP2373939B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/20—Distributing ice
    • F25C5/22—Distributing ice particularly adapted for household refrigerators
    • 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126—Water cooler
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/10—Refrigerator 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
    • 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
    • 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
    • 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
    • F25D2400/36—Visual displays
    • F25D2400/361—Interactive visual displays
    • 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
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

Definitions

  • the invention relates to a refrigerator, especially to a household or commercial refrigerator which is provided with a dispenser.
  • the freezing compartment of a refrigerator can usually reach a temperature of lower than minus ten °C or more.
  • the refrigerator body and the door of the refrigerator are provided with heat insulating layers to avoid losing of cold energy caused by heat exchange between the cold air within the refrigerator and the surrounding environment.
  • some portions of the refrigerator door which are exposed to the atmosphere may have relatively low temperature under the influence of the storage compartment. When the difference between the temperature of the surface exposed to the atmosphere and the atmosphere temperature reaches dew point temperature, condensation will appear on the surface.
  • US patent No. 6,862,891 B1 discloses a refrigerator which has a heating element located near an ice dispensing means and a control unit connected with the heating element.
  • the control unit is configured such that the voltage supplied to the heating element is variable, so that the heating element may operate at different non-zero voltages for reducing energy consumption.
  • This patent when describing related background art, also mentions that the manufacturer may mount two dew preventing heaters, one of the heaters serving as a backup heater to be used when the other heater is defective.
  • a refrigerator according to the preamble of claim 1 is known from US 5 442 933 .
  • Whether a refrigerator will dew or generate condensate depends not only on environmental conditions (for example, temperature and humidity) and the temperature of a particular surface of the refrigerator, but also on the operation and using conditions of the refrigerator. Where only an automatically controlled dew preventing heater is provided, some times it cannot precisely prevent the dewing phenomenon and / or the dew preventing heater generates excessive heat. For a refrigerator used in a country or district where weather variation is great, these defects are even more significant.
  • the configuration of the refrigerator will become significantly complicated and some components of the refrigerator, such as the microprocessor and the memory unit of the control unit, may have to be upgraded.
  • an object of the invention is to solve at least one of the technical problems found in the prior art, so that the dewing phenomenon can be prevented or the condensate that has been generated can be removed at a relatively low cost.
  • the invention in one aspect relates to a refrigerator, comprising: a refrigerator body defining at least one storage space; a door connected to the refrigerator body for closing at least a part of the storage space; a dispenser provided in the door, the dispenser comprising a dispenser casing; a first heater for supplying heat to the dispenser casing; and a control unit, the control unit being configured to automatically control the operation of the first heater, wherein the operation of the first heater comprises at least turning on and turning off the first heater, characterized in that the refrigerator further comprises a second heater arranged near the first heater, and in a manually initiated auxiliary heating mode the second heater is turned on for supplying extra heat to the dispenser casing.
  • control unit of the invention may have a relatively simple configuration, so that dewing prevention / condensate removing functions can be achieved in different weather conditions and / or different using conditions at relatively low cost. Further, in the condition that dewing cannot occur, the second heater can be directly closed by the user or be kept in a closed state. Thus, unnecessary energy consumption can be reduced, and dew preventing / condensate removing efficiencies can be increased.
  • the refrigerator comprises switching means connected with the second heater, wherein the second heater is turned on by an operation of manually controlling the switching means, so as to initiate the auxiliary heating mode.
  • the second heater is turned off by an operation of manually controlling the switching means.
  • the refrigerator further comprises timing means, the timing means being configured to generate a signal for turning off the second heater, after the second heater has been turned on for a predetermined time.
  • the power of the second heater is lower than the power of the first heater.
  • the refrigerator further comprises a sensing unit, the sensing unit being configured to sense at least one environmental parameter and feed the parameter to the control unit, and the control unit being configured to control the first heater based on the sensed environmental parameter.
  • the environmental parameter comprises ambient temperature and / or ambient relative humidity.
  • the first heater and / or the second heater is disposed on the inner side of the dispenser casing, the inner side of the dispenser casing being adjacent to the heat insulating layer of the door.
  • the dispenser casing comprises a first area and a second area near the first area, the first heater being provided in the first area, and the second heater being provided in the second area.
  • the dispenser comprises an ice transfer passage extending through the door
  • the dispenser casing comprises a through hole forming a part of the ice transfer passage
  • at least a part of the first heater is arranged along the through hole.
  • a heat conducting element is provided on the inner side of the dispenser casing, the heat conducting element being configured to transmit heat from the first heater and / or the second heater to the dispenser casing.
  • the heat generated by the heater can be evenly transmitted to the dispenser casing, by means of which, an amount of the heat generated by the heater and transmitted toward the storage space will be reduced to some extend.
  • the dispenser casing defines a dispensing cavity for receiving at least a part of an outside container, and the heat conducting element covers at least a major portion of a longitudinal wall of the dispensing cavity.
  • the heat conducting element comprises a metal foil having a high heat conductivity, the metal foil establishing face-to-face contacting with the dispenser casing.
  • the first heater comprises two heating segments which are spaced from each other by a predetermined distance, and at least a part of the second heater is arranged between the two heating segments.
  • the second heater when the second heater is not activated, the area in which the second heater is disposed can be effectively covered by the heat generated by the first heater covers.
  • the refrigerator further comprises a third heater for supplying heat to a longitudinal side wall of the door, so that it can prevent the longitudinal side wall of the door from dewing or remove any condensate that has been generated.
  • a refrigerator 1 comprises a refrigerator body 2 and two doors 3 connected to the refrigerator body 2, as shown in Figures 1 and 2 .
  • the refrigerator body 2 comprises an outer shell 11, an inner shell 12 and a heat insulating layer 6 disposed between the outer shell 11 and the inner shell 12.
  • the heat insulating layer 6 is a foam-based insulating layer and is formed by foaming a heat insulating foam material.
  • the refrigerator body 2 defines at least one storage space for storing food.
  • the storage space comprises a freezing compartment 7 and a refrigerating compartment (not shown) which are juxtaposed with each other.
  • the doors 3 are pivotably connected to the refrigerator body 2 by hinges 4 respectively, and are rotatable about their corresponding rotation axes which are parallel to a vertical axis. As shown in Figure 2 , it is also provided with a foam-based insulating layer 6 inside each of the doors 3.
  • the doors 3 are usually closed to avoid escape of cold air from the freezing compartment 7 and the refrigerating compartment.
  • the user may open the corresponding door 3 to perform an operation, such as taking out food from the freezing compartment or refrigerating compartment, or putting food into a corresponding storage compartment.
  • the user can open or close the doors 3 by means of handles 5.
  • each door 3 is configured to completely open or completely close a corresponding storage compartment. It can be understood that the invention is not limited thereto, and other embodiments are also possible.
  • one of the storage compartments may be opened or closed by two doors 3. That is to say, each door 3 may only open or close a part of such a storage compartment.
  • the door 3 which is corresponded to the freezing compartment 7 (hereinafter referred to as freezing compartment door) is equipped with a dispenser 8 to allow a user to take out ice and/or beverage (for example water), such as ice stored in the freezing compartment and water stored in a water tank arranged in the refrigerating compartment, without opening the door 3.
  • ice and/or beverage for example water
  • the dispenser 8 is arranged in the door 3 which is corresponded to the freezing compartment, it shall be appreciated that it is also possible to arrange the dispenser 8 in a suitable way in the door 3 which is corresponded to the refrigerating compartment.
  • the freezing compartment door 3 comprises a door panel 13 forming its front surface and an inner lining 23 facing towards the freezing compartment 7 when the freezing compartment door 3 is in its closed position.
  • the door panel 13 is made of a sheet metal material, and both sides of the door panel 13 are bent backwardly and extend to form into first and second longitudinal sidewalls 48 and 49 respectively.
  • the heat insulating layer 6 is in tight contact with the door panel 13 and the first and second longitudinal sidewalls 48 and 49.
  • the door panel 13 has an opening 9 corresponding to the dispenser 8, which opening 9 having a substantially square or rectangular shape.
  • the dispenser 8 comprises a dispenser casing 10 received between the door panel 13 and the inner lining 23.
  • the dispenser casing 10 forms a cavity 14 which is inwardly recessed and has a front open end.
  • the shape and dimension of the front open end of the inner cavity 14 correspond to that of the opening 9 substantially.
  • the inner lining 23 protrudes toward the freezing compartment 7 at the location corresponded to the dispenser casing 10, with a predetermined distance between the protruding portion of the inner lining 23 and the dispenser casing 10 for disposing the heat insulating layer 6.
  • the dispenser 8 comprises a partition plate 15 within the inner cavity 14.
  • the partition plate 15 is parallel to a horizontal plane and separates the inner cavity 14 into upper and lower portions.
  • the portion of the inner cavity 14 located below the partition plate 15 forms into a dispensing cavity 16 whose front end is kept open.
  • the dispensing cavity 16 is configured to accept at least a part of an external container such as a cup.
  • the dispensing cavity 16 is recessed backwardly from the front surface of the door 3 with a certain curvature to a predetermined depth.
  • the dispensing cavity 16 has a substantially flat support wall 17 for stably putting the external container thereon.
  • the support wall 17 has a plurality of thin through holes (not shown), through which any liquid that is splashed out or overflows accidentally during an ice or water dispensing process flows into a water gathering slot 19 arranged below the support wall 17.
  • the refrigerator 1 comprises a control panel 20 arranged on the freezing compartment door 3, and the control panel 20 comprises a display screen 21 and a plurality of buttons or a touch area 22 for controlling the refrigerator 1.
  • the display screen 21 can display the state of the refrigerator 1 and/or selectable parameters, etc.
  • control panel 20 is arranged along the upper end of the opening 9, closely adjacent to the dispensing cavity 16.
  • the portion of the opening 9 located above the partition plate 15 is adapted to be conformed to the out profile of the control panel 20, such that the control panel 20 can be engaged by the corresponding edge of the opening 9.
  • the portion of the inner cavity 14 located above the partition plate 15 is shielded by the control panel 20.
  • the dispenser casing 10 comprises a cavity wall delimiting the inner cavity 14.
  • the cavity wall comprises a first portion 24 located below the partition plate 15.
  • the first portion 24 comprises a longitudinal wall 30 for forming a longitudinal boundary of the dispensing cavity 16.
  • the longitudinal wall 30 is perpendicular to the horizontal plane and has a substantially arc-shaped cross-section.
  • the longitudinal wall 30 has a rear surface which is closely adjacent to the heat insulating layer 6 and an outer surface which is exposed to the atmosphere.
  • the first portion 24 further comprises a bottom wall 31 which is connected to the lower end of the longitudinal wall 30 and extends forwardly.
  • the bottom wall 31 is located below the support wall 17 and spaced from the support wall 17 by a certain distance so as to form the above-mentioned water gathering slot 19.
  • the cavity wall of the dispenser casing 10 further comprises a second portion 25 which is connected to the upper end of the first portion 24 and is located above the partition plate 15.
  • the second portion 25 comprises an inclined wall 26 which extends from the longitudinal wall 30 and is inclined forwardly.
  • the inclined wall 26 comprises a through hole 27 which allows ice to pass therethrough.
  • the through hole 27 is configured as a part of an ice transfer passage 29.
  • the ice transfer passage 29 is used for transferring ice from an ice storage unit 28 located within the freezing compartment 7 to the dispensing cavity 16.
  • the second portion 25 further comprises a top wall 32 which forms the upper boundary of the inner cavity 14.
  • the second portion 25 has a hole 33 through which a water supply pipe (not shown) passes, which water supply pipe transmitting drinkable water to the dispensing cavity 16.
  • An ice discharge pipe 34 forming a major part of the ice transfer passage 29 is embedded in the freezing compartment door 3.
  • One end of the ice discharge pipe 34 is connected to the second portion 25 and is in communication with the through hole 27.
  • the other end of the ice discharge pipe is oriented towards a discharge outlet of the ice storage unit 28 within the freezing compartment 7 when the freezing compartment door 3 is closed. Thereby, the ice discharged from the ice storage unit 28 enters into the ice discharge pipe 34, and then is guided to the dispensing cavity 16 by means of an ice outlet 18 provided in the partition plate 15.
  • the portion of the inner cavity 14 which lies above the partition plate 15 is shielded by the control panel 20; however, the second portion 25 of the dispenser casing 10 still communicates with the atmosphere, that is, the second portion 25 is still exposed to the atmosphere, because the partition plate 15 is provided with the ice outlet 18 which is in communication with the portion of the inner cavity 14 which lies above the partition plate 15.
  • the dispenser 8 is equipped with a closure element 36 for opening or closing the ice transfer passage 29.
  • the ice transfer passage 29 is closed by the closure element 36.
  • the ice transfer passage 29 is opened by means of the closure element 36 to allow the transfer of ice.
  • the shape and dimension of the closure element 36 are substantially corresponded to that of the through hole 27, such that in the closed position the closure element closes the through hole 27 and thus closes the ice transfer passage 29.
  • the closure element 36 is connected to the second portion 25 of the dispenser casing 10 and is received in the inner cavity 14.
  • the temperature of the dispenser casing 10 is usually lower than room temperature/ambient temperature.
  • the difference between ambient temperature and the temperature of the dispenser casing 10 reaches dew point temperature, condensate drops will be generated on the dispenser casing 10.
  • the condensation possibility is relatively high due to the fact that the second portion 25 of the dispenser casing 10 is close to the ice discharge pipe 34 and forms a part of the ice transfer passage 29.
  • the refrigerator I is provided with a heating unit 37 for increasing the surface temperature of the dispenser casing 10. As shown in Figure 2 , the heating unit 37 is arranged between the dispenser casing 10 and the heat insulating layer 6.
  • FIG 4 is a schematic diagram of the heating unit 37 according to a preferred embodiment of the invention.
  • the heating unit 37 comprises a first heater 38 and a second heater 39 adjacent to the first heater 38, for supplying heat to the dispenser casing 10.
  • the first heater 38 and the second heater 39 are preferably resistance heaters, i.e. performing heating by resistors.
  • the heating unit 37 further comprises a first heat conducting element 40 for transmitting the heat generated by the first heater 38 and the second heater 39 to the dispenser casing 10.
  • the first heat conducting element 40 is an aluminum foil having a high heat conductivity.
  • the first heat conducting element 40 has a hole (not shown) which is corresponded to the through hole 27.
  • the first heater 38 and the second heater 39 can be arranged according to the distribution characteristics of condensate drops on the dispenser casing 10.
  • the first heater 38 comprises a plurality of arc-shaped heating segments 35 arranged around the hole.
  • the second heater 39 is arranged close to the first heater 38 and preferably comprises a portion located between heating segments 35 of the first heater 38. Preferably, this portion has a shape that corresponds to the heating segment 35.
  • the other side of the first heat conducting element 40 is closely attached to the inner side of the dispenser casing 10.
  • the heating unit 37 is adhered to the inner side of the dispenser casing 10 by means of adhesive means (not shown), with the hole of the first heat conducting element 40 being aligned with the through hole 27.
  • the first heat conducting element 40, the first heater 38 and the second heater 39 all are flexible and deformable, such that the portion of the heating unit 37 located between line A and line B is arranged on the inclined wall 26, the portion thereof located above line A is bent and then is adhered to the top wall 32 of the dispenser casing, and the portion thereof located below line B is bent and then is connected to the upper end of the longitudinal wall 30.
  • the first heater 38 is mainly arranged on the inclined wall 26 and the top wall 32 of the dispenser casing 10.
  • the lower end portion of the first heater 38 extends to the upper end of the longitudinal wall 30.
  • the heating segment 35 most close to the through hole 27 is arranged around the through hole 27.
  • the major portion of the second heater 39 is arranged on the inclined wall 26. The portion located below line B of the second heater extends to the upper end of the longitudinal wall 30 together with that of the first heater 38.
  • the first heater 38 and the second heater 39 are disposed on a first region 51 and a second region 52 of the dispenser casing 10 respectively.
  • the first region 51 is adjacent to the second region 52, but they do not overlap each other.
  • the first region 51 comprises the majorities of the inclined wall 26 and the top wall 32 as well as the upper end portion of the longitudinal wall 30 which is close to the inclined wall 26.
  • the second region 52 has an area smaller than the first region 51 and is surrounded by the first region 51.
  • the power of the second heater 39 is lower than that of the first heater 38.
  • the power density of the second heater 39 is configured in such a way that the dispenser casing 10 is not subjected to overheating even if the second heater 39 is turned on for a long time or always turned on.
  • the side of the longitudinal wall 30 which faces the heat insulating layer 6 is provided with a second heat conducting element 50, the upper end of which is connected to the first heater 38 and the second heater 39 or connected to the first heat conducting element 40.
  • the first and second heaters 38 and 39 and/or the first heat conducting element 40 serve as a heat source for the second heat conducting element 50.
  • the second heat conducting element 50 is of a high heat conductivity, the heat generated by the first and second heaters 38 and 39 is also transmitted to other portions of the longitudinal wall 30 that are not equipped with any heating element, such that the temperature of the whole longitudinal wall 30 can be increased so as to avoid the presence of condensate drops.
  • the longitudinal wall 30 is located relatively distant from the ice transfer passage 29, such a configuration allows to avoid the presence of condensate drops on the longitudinal wall 30 without arranging any heater on the longitudinal wall 30 or merely by arranging a heater on the marginal region of the longitudinal wall 30 where is not easy to be touched by the user. Thus, energy consumption can be lowered. In addition, the situation that the user touches the high temperature region of the longitudinal wall 30 can be avoided.
  • the second heat conducting element 50 comprises a metal foil of a high heat conductivity, such as aluminum foil.
  • the second heat conducting element 50 covers at least substantially most of the longitudinal wall 30.
  • the longitudinal wall 30 is entirely covered by the second heat conducting element 50.
  • the second heat conduction element 50 is preferably adhered to the inner side of the longitudinal wall 30.
  • first and second heater 38 and 39 extend to the upper end of longitudinal wall 30.
  • the invention is not limited thereto.
  • the first and second heater 38 and 39 do not extend to the longitudinal wall 30; rather, the heat conducting element 50 may extend to a extend that is beyond the longitudinal wall 30 (such as extending to the inclined wall 26) so as to be contacted with the first and second heater 38 and 39 which lie outside the longitudinal wall 30.
  • the first longitudinal sidewall 48 of the freezing compartment door 3 is located adjacent to the rotation axis of the freezing compartment door 3, so that the second longitudinal sidewall 49 opposite to the first longitudinal sidewall 48 is located distant from the rotation axis of the freezing compartment door 3 and close to the door of the refrigerating compartment.
  • the freezing compartment door 3 is provided with a third heater 47 for supplying heat to the second longitudinal sidewall 49, so as to avoid the presence of condensate drops on the second longitudinal sidewall 49 due to the difference between surface temperature and the atmosphere temperature.
  • the third heater 47 is attached to the inner side of the second longitudinal sidewall 49.
  • the second longitudinal sidewall 49 is provided with a third heat conducting element 54 attached to the inner side thereof.
  • the third heat conducting element 54 is located between the third heater 47 and the inner surface of the second longitudinal sidewall 49 to evenly transmit the heat generated by the third heater 47 to the second longitudinal sidewall 49.
  • the third heat conducting element 54 is attached to the inner surface of the second longitudinal sidewall 49 by adhesive means (for example, an adhesive tape).
  • the third heater 47 and/or the third heat conducting element 54 are arranged on a region of the second longitudinal sidewall 49 which is corresponded to the dispenser 8 in the longitudinal direction.
  • the third heater 47 at least partially overlaps the dispenser 8 in a transverse direction.
  • FIG. 5 shows a structural schematic diagram of the refrigerator according to a preferred embodiment of the invention. Now a control method of the first heater 38 and the second heater 39 will be described with reference to Figure 5 .
  • the refrigerator 1 comprises a control unit 41, and an input unit 43 and a display unit 44 coupled to the control unit 41 respectively, wherein the input unit 43 comprises the buttons or touch area 22 located on the control panel 20, and the display unit 44 comprises the display screen 21 located on the control panel 20.
  • the control unit 41 comprises a microprocessor and a memory unit, such that some components of the refrigerator 1 such as the first heater 38 can be automatically controlled by means of a program stored in the memory unit.
  • the refrigerator 1 further comprises a sensing unit 42 for detecting at least one environmental parameter.
  • the sensing unit 42 is coupled to the control unit 41 and feeds back the detected parameter to the control unit 41.
  • the sensing unit 42 comprises a temperature sensor for detecting ambient temperature.
  • the sensing unit 42 controls the operation of the first heater 38, including turning on and turning off the first heater 38, based on the detected ambient temperature.
  • the first heater 38 when the detected ambient temperature is lower than zero °C, the first heater 38 is turned off. When the detected ambient temperature is between 0 °C and 10 °C, the first heater 38 operates at a first output power and/or operates at a duty cycle of lower than 0.3. When the detected ambient temperature is between 10 °C and 15 °C, the first heater 38 is turned on at a second output power, or the first heater 38 is turned on and off in an alternative manner at a second duty cycle (for example, 0.4). When the detected ambient temperature is between 15 °C and 25 °C, the first heater 38 is turned on at a third output power and/or operates at a predetermined third duty cycle (for example, 0.5).
  • the sensing unit 42 further comprises a humidity sensor for detecting ambient relative humidity.
  • the control unit 41 controls the operations of the first heater 38 based on the detected ambient temperature, ambient relative humidity and other factors.
  • the second heater 39 is controlled independently of the first heater 38. According to the invention, the second heater 39 is turned on only in an auxiliary heating mode, which is only manually initiated by the user. Thus, the user can, according to the dewing phenomenon on the refrigerator 1, make an active decision as to whether the second heater 39 should be actuated to increase heat for removing or preventing dewing.
  • the auxiliary heating mode is actuated by means of switching means 45 arranged on the freezing compartment door 3.
  • the switching means 45 is preferably arranged on the dispenser 8 or near the dispenser 8. Particularly preferably, the switching means 45 is arranged on the partition plate 15.
  • the switching means 45 is electrically connected to the second heater 39, and the turning on and off states of the second heater 39 is determined by the switching on and off states of the switching means 45.
  • the switching means 45 when the switching means 45 is in the switching off state and the refrigerator 1 operates in a normal mode, the first heater 38 is turned on or off based on an instruction from the control unit 41, and the second heater 39 is turned off.
  • the refrigerator 1 actuates the auxiliary heating mode, the second heater 39 is turned on to supply extra heat to the dispenser casing 10, and at the same time the first heater 38 is turned on or off based on an instruction from the control unit 41.
  • the switching means 45 can be provided independently of the control unit 41. For example, there is no coupling between the switching means 45 and the microprocessor of the control unit 41. In an alternative embodiment, the switching means 45 is connected to the control unit 41.
  • the display unit 44 can display whether the refrigerator 1 is under the normal heating mode or the auxiliary heating mode, or the user can select the parameters displayed on the display unit 44 by means of the switching means 45 in order to initiate the auxiliary heating mode.
  • the second heater 39 can be turned off by manually switching off the switching means 45, so that the auxiliary heating mode is ended.
  • the second heater 39 can also be automatically turned off.
  • the control unit 41 is configured in such a manner of automatically turning off the second heater 39 after the second heater 39 has been turned on for a predetermined time, such as 15 minutes. This can be achieved by virtue of timing means connected to the control unit 41.
  • the timing means is configured in such a way that it generates a signal when the second heater 39 has been turned on for a predetermined time, and then the second heater 39 is turned off based on this signal. Under the condition that the switching means 45 is not coupled with the microprocessor of the control unit 41, this can be achieved by timing means connected to the switching means 45 or timing means embedded the switching means 45.
  • the control manner of the third heater 47 is the same as that of the first heater 38, that is, being automatically controlled by the control unit 41 based on detected parameters.
  • the parameter comprises ambient temperature, ambient relative humidity and/or the temperature of the sidewall 49, such that the control unit 41 can control the third heater 47 based on the ambient temperature, the ambient relative humidity and/or the temperature of the sidewall 49, so as to for example determine whether or not the third heater 47 should be turned on, or determine the frequency of turning on and off or the duty cycle of the third heater 47.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP09775152.3A 2008-12-08 2009-12-08 Refrigerator Active EP2373939B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810244094A CN101749915B (zh) 2008-12-08 2008-12-08 冰箱
PCT/EP2009/066620 WO2010066726A2 (en) 2008-12-08 2009-12-08 Refrigerator

Publications (2)

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EP2373939A2 EP2373939A2 (en) 2011-10-12
EP2373939B1 true EP2373939B1 (en) 2014-12-03

Family

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EP09775152.3A Active EP2373939B1 (en) 2008-12-08 2009-12-08 Refrigerator

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US (1) US20110289949A1 (zh)
EP (1) EP2373939B1 (zh)
CN (1) CN101749915B (zh)
WO (1) WO2010066726A2 (zh)

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WO2015194707A1 (ko) * 2014-06-20 2015-12-23 주식회사 대창 제빙기, 이를 포함하는 냉장고 및 제빙기 히터를 제어하는 방법
KR20170052235A (ko) * 2015-11-04 2017-05-12 삼성전자주식회사 제빙기 및 이를 포함하는 냉장고
US10627147B2 (en) * 2016-04-21 2020-04-21 Electrolux Home Products, Inc. Fill section heater for a refrigeration appliance
IT201600077707A1 (it) 2016-07-25 2018-01-25 Elbi Int Spa Dispositivo valvolare per un condotto di erogazione di cubetti di ghiaccio in un frigorifero.
KR20180120975A (ko) * 2017-04-28 2018-11-07 엘지전자 주식회사 냉장고 및 그 제어 방법
KR102418143B1 (ko) * 2017-04-28 2022-07-07 엘지전자 주식회사 냉장고 및 그 제어 방법
CN110887287A (zh) * 2018-09-10 2020-03-17 沈阳海尔电冰箱有限公司 冰箱的换热器组件及冰箱
CN110375501B (zh) * 2019-07-15 2021-02-26 合肥美的电冰箱有限公司 制冷设备及其分配器的控制方法和控制装置
CN216814768U (zh) * 2021-11-16 2022-06-24 青岛海尔电冰箱有限公司 门体组件及具有其的冰箱

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CN100398959C (zh) * 2004-04-12 2008-07-02 乐金电子(天津)电器有限公司 冰箱分配器加热装置
US7591141B2 (en) * 2005-05-18 2009-09-22 Maytag Corporation Electronic control system for insulated ice compartment for bottom mount refrigerator
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Also Published As

Publication number Publication date
CN101749915B (zh) 2012-09-26
US20110289949A1 (en) 2011-12-01
WO2010066726A3 (en) 2010-11-11
CN101749915A (zh) 2010-06-23
EP2373939A2 (en) 2011-10-12
WO2010066726A2 (en) 2010-06-17

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