EP0690277B1 - Steuereinrichtung zum Betrieb eines Kühl- oder Gefriergerätes - Google Patents
Steuereinrichtung zum Betrieb eines Kühl- oder Gefriergerätes Download PDFInfo
- Publication number
- EP0690277B1 EP0690277B1 EP95107986A EP95107986A EP0690277B1 EP 0690277 B1 EP0690277 B1 EP 0690277B1 EP 95107986 A EP95107986 A EP 95107986A EP 95107986 A EP95107986 A EP 95107986A EP 0690277 B1 EP0690277 B1 EP 0690277B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- running time
- cooling
- time
- control device
- thawing
- 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 - Lifetime
Links
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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
- F25D21/002—Defroster control
- F25D21/006—Defroster control with electronic control circuits
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- 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
- F25D2400/08—Refrigerator tables
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- 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
- F25D2700/02—Sensors detecting door opening
Definitions
- the invention relates to a control device for operating a refrigerator or freezer with at least one interior closable by a door, which from a in a refrigeration cycle evaporator is cooled, which from time to time is subjected to automatic defrosting by the one defrosting device controlling control device is initiated and terminated, during the duration of the Defrosting the refrigerator or freezer from its cooling mode in its Defrost operation is transferred, the duration of the defrost to determine the Desired running time of the cooling operation following the defrosting process.
- Such a control device is known from US-A-4327557.
- the lesson mediates, in any case, the defrosting process regardless of those in the refrigerator prevailing temperature or with regard to a defrosting process induced temperature change, towards higher temperatures, in any case to be initiated when the accumulated compressor running time is a predetermined time value has exceeded.
- DE-US 40 33 240 a defrosting device of a cooling or Freezer-controlling control device known that the defrosting process Evaporator initiates in this refrigerator or freezer if necessary.
- conditions used as defrost criteria One of those conditions is the number of door openings and their addition with the duration of the door openings the refrigerator or freezer, compared to a predetermined limit, educated. Another condition is by comparing the time span since one last defrost with a given limit and one last condition by comparing the running time of the refrigeration unit with since the last defrost given a predetermined limit. Sends when one of these conditions is met the control device sends a signal to initiate the defrosting process.
- Another defrost control for defrosting an evaporator for a refrigerator is in the DE-US 41 15 359 described.
- This defrost control device will defrost not initiated after a specified time interval but as required.
- Tire duration of the evaporator stored which on the one hand the active Refrigerant circulation time value and on the other hand the influence on the tires of the evaporator due to the number and duration of the door openings current value taking into account is reduced.
- Both the opening of the door of the refrigerator in the cold room penetrating humid outside air as well as through the introduction of fresh refrigerated goods caused moisture increase in the cooling air and resulting premature icing of the evaporator is taken into account.
- the defrosting process is initiated by the defrost control for example, if the difference between the stored in a memory as Fixed value of the specified duration of the tires and the time values that reduce the value Reached zero.
- the invention has for its object one for operating a defrosting device Serving control device to propose, through which the disadvantages of the prior art Technology are avoided in a simple manner.
- control device contains means the compressor of the refrigerator or freezer before initiating the defrosting process operate for a certain time to ensure that the stored Well not excessively heated during the defrosting process.
- the set running time during cooling operation by one time value determined from the number of door openings and the duration of the door opening is shortened.
- Such a solution has the advantage that an immediate adjustment of the The target running time for the cooling operation was carried out via the door of the refrigerator or freezer Introduction of moisture into the cold room and the associated frosting of the Evaporator is taken into account.
- the target runtime during the cooling operation both around one determined from the number of door openings and the duration of the door opening Current value, as well as the running times of a compressor in the refrigeration cycle is shortened.
- Such a solution is particularly useful for refrigerators, on their cold room is frequently accessed for the storage and removal of refrigerated goods.
- the target running time in cooling operation with the current running time in Cooling mode is compared, with the defrosting process being the same for the two runtimes is only initiated after a minimum device runtime has expired.
- the means are formed by an electronic circuit arrangement.
- the means through a programmable microprocessor are formed.
- a control device works particularly expediently if after a last one preferred embodiment of the object of the invention is provided that after each start-up of the refrigerator or freezer, an empirically determined initial target runtime is set equal to the target runtime for cooling operation, which is at each door opening reduced by a corresponding time value and in certain Time intervals with the current runtime of the device is compared, with equality or if the set running time is exceeded after a minimum set running time, a defrost phase of an evaporator is initiated, the duration of which is a time value for the set running time of the subsequent cooling operation is determined, before initiating the defrosting process is preceded by a compressor runtime to ensure that the stored Well not excessively heated during the defrosting process.
- a circulating air refrigeration device 10 is shown, on the one with an access opening equipped housing 11 struck a door 12 covering this opening is and on the side opposite the door 12, serving as the rear wall 13 in Bottom region of the housing 11, which serves as a machine compartment for a compressor 14, stepped projection 15 directed towards the interior of the housing 11 is. Above this is in the interior of the housing 11 at a distance from the rear wall 13 arranged partition 16 is provided, the step-like projection 15 facing side together with this forms an air inlet gap 17 while they on its side opposite the air inlet gap 17 up to the housing ceiling runs.
- the space is a ventilated for cooling by means of a fan 18 of the interior serving evaporator lying in a refrigeration cycle with the compressor 14 19 arranged. This is used from time to time to maintain its performance defrosted automatically, the result of the defrosting process Melt water is collected in a gutter 20, which with a no closer Channel heater shown is equipped to drain the melt water guarantee immediately after the defrosting process.
- the defrosting process is initiated and ended by a control device 30, wherein during the defrosting process, the refrigerator 10 from its cooling mode in its Defrost operation is transferred.
- the control device 30 is an electronic one Circuit arrangement formed, which is essentially six circuit sections I to VI, in which the criteria for controlling the cooling and defrosting operation, such as determining the required defrost time, determining the number and the Duration of the door openings, the determination of a minimum compressor runtime, control defrost heating, control of the compressor and determination of the running time of the Refrigeration device 10, which is composed of the standing and running times of the compressor 14, created and identified.
- the individual circuit sections I to VI are functionally linked to each other, with a circuit section I for control of the compressor 14 is provided.
- this circuit section is one of the evaporator 19 assigned temperature sensor 31 is provided in the form of an NTC resistor, with its help a defrosting process of the evaporator 19, which is explained in more detail below is monitored.
- NTC resistor When the evaporator 19 is de-iced upper limit temperature, the resistance value of the NTC resistor drops and thus the voltage drop there drops off significantly, whereby a Schmitt trigger 32 changes its switching state changes.
- the output signal of the Schmitt trigger 32 is an input of a OR gate 33 supplied while the other input by one explained below Input signal variable "e" is occupied.
- the output signal of the OR gate 33 is on the input side of an AND gate 34, the second input of which Output of a NAND gate 35 is occupied, the two inputs with below explained the criteria for initiating the defrosting of the evaporator 19 forming input signal variables "a" and "b" are assigned.
- the output signal of the AND gate 34 is coupled to the input of an amplifier 36, via which an Relay 37 is controlled, by means of which the circuit is switched by a switch 38 Control of the compressor 14 is closed or interrupted.
- the output of the AND gate 40 is with Reset input of a bistable flip-flop 41 connected, so that at a logical 1st at the output of the AND gate 40, the flip-flop 41 is reset, which by resetting the flip-flop 41 produces an output signal Q one input AND gate 42 is supplied, the other input with the output of a clock generator 43 is connected, the precisely timed pulse trains as an input signal on a counter 44 for determining the length of time that the compressor 14 at Cooling device is not activated, are present. At that time the time in which the compressor 14 is added during cooling operation is added in the counter 44 of the refrigerator 10 is turned on.
- the counter is used to determine this length of time 44 an output signal of an AND gate 45, one input of which is supplied the pulse train of the clock generator 43 is applied while the other input of the AND gate 45 receives the output signal Q of the set flip-flop 41.
- the Set state of the flip-flop 41 is indicated by a "logic one" at the output of the AND gate 34 with “logic” present at the same time at the output of the AND gate 40 Reached zero ".
- the output signal of the AND gate 34 is fed to an input of an AND gate 46, the other input of which is supplied with the pulse train of the clock generator 43.
- the pulse trains resulting at the output of the AND gate 46 are added up by a counter 47 with a reset input, the current compressor running time t V / a resulting from the addition of the pulse trains is compared with a minimum compressor running time tV / min by means of a comparator 48.
- a comparator 48 In the event that the current compressor runtime slightly exceeds the predetermined minimum compressor runtime, there is a positive digitally processable output signal "a" at the output of the comparator 48.
- a switching contact 49 designed as a break contact is provided, the opening of which or closing the door 12 generated signal on the one hand via a negation element 50 is fed to the reset input of a bistable flip-flop 51, while on the other hand the set input of this flip-flop 51 with the non-negated signal of the switching contact 49 is applied.
- This is due to the set state of the flip-flop 51 at its output Q generated output signal is fed to one of the inputs of an AND gate 52, whose other input is connected to the output of the clock generator 43.
- the Output of the AND gate 52 is connected to the input of a counter 53, which the pulses from the clock generator 43 for the duration of the set state of the flip-flop 51 added up.
- the pulse sequence summed up by the counter 53, which stored in a read and write memory 54 equipped with a reset input is used to determine the opening time of the door 12. That by means of the negation element 50 negated signal of the switch contact 49 is the reset input of the flip-flop 51 fed.
- the output signal thus generated at the output Q of the flip-flop 51 is coupled to a monovibrator 55, the output of which is connected to the input of a Another negation element 56 is connected, the output of which in turn is connected to the input a counter 57 is contacted with a reset function.
- each Door opening is assigned a time value stored in the read / write memory 58, which is available at the output of this memory 58.
- Both those in the read-write memory 58 and the data stored in the read / write memory 54 are an adder 59 supplied, which for each based on the data retrieved from the two memories Door opening determined a total time value tT for a door opening.
- This time value lies as a date at the input of a subtractor 60, which has this time value of one subtracted the starting target running time tLS / n + 1 explained in more detail below and therefrom a currently valid target running time tLS / n + 2 is calculated.
- This currently valid target runtime is fed to a comparator 61, which compares it with a current target running time tLS / a from the read-write memory 44 compares, the comparator 61st outputs a positive digitally processable output signal "b" when the current Running time tLa slightly exceeds the currently valid running time tLSn + 1.
- the output signal "b" at the comparator 61 and the output signal “a” at the comparator 48 is fed to NAND gate 35, possibly to the compressor in operation 14 and the fan 18 by the resultant at the output of the NAND gate 35 Stop the signal if a defrost is initiated according to criteria "a” and "b" is.
- the output signals a and b are one AND gate 62, which is used in a for controlling the defrost heating Circuit section V is supplied, whose output signal is at the corresponding "Logical one" resulting in input assignment is fed to an amplifier 63 is, which again controls a relay 64, which uses a switch 65 the circuit to a defrost heater 66 closes or interrupts.
- the "logic one" resulting from AND gate 62 also serves as a reset criterion for the counters 44, 47, 53 and 57.
- the output value e is the OR gate already described on the input side 33 supplied, whereby the compressor 14 is put back into operation after defrosting becomes. In both cases, an output signal "c" is generated at the output of the OR gate 33, which is fed to the reset input of the flip-flop 68, whereby the measurement defrosting is complete.
- the counter 70 during the defrosting process accumulated defrost time is also fed to a read-write memory 72, in which for example, in tabular form, an assignment between one via the counter 70 determined defrost time or the max. Defrosting time and the resulting target runtime is created for the refrigerator 10. The target runtime resulting from the assignment for the refrigerator 10 after the end of the defrosting process as the initial target runtime a subsequent cooling phase to the subtractor 60.
- a control device 80 is shown in a further exemplary embodiment, which is an alternative to the control device shown and described in FIG. 2 30 is equipped with a programmable microprocessor 81, which the Control functions of the control device 30 constructed with discrete components takes over, which to be controlled during the cooling and defrosting operation of the refrigerator 10 or functional units to be queried, such as the temperature sensor 31, the Compressor 14, the fan 18 and the defrost heater 66 with those used in Figure 2 Reference numerals are provided.
- a flow chart 90 for operating a control device 30 or a control device 80 is shown.
- the process begins with an initialization 91 of the refrigeration device 10 when it is supplied with mains voltage.
- the initialization 91 is followed by an operation block 92, in which an empirically determined initial target running time t LS / , which is dependent on the respective device type, is set at a target running time tLS / n + 1.
- the refrigeration device 10 is transferred to a control operating section 93, in which the current running time tLS / a of the refrigeration device 10 is determined, this being calculated from the sum of the running times of the compressor 14.
- the current running time of the refrigeration device 10 is continuously compared with the initially specified target running time in a decision block 94 (comparator 61). In the event that the current runtime is less than the target runtime, in a process loop branching off from decision block 94, a query is made at certain time intervals during normal operation in a decision block 95 whether and if so, how long the door 12 of the Refrigerator 10 was open.
- a new set running time tLS / n + 2 is calculated in a function block 96 (subtractor 60) the preceding target running time tLSn + 1 minus a time period tT that takes into account both the door opening itself and the door opening duration, the newly calculated target running time now being fed to decision block 94. If a comparison in decision block 94 shows that the current running time now corresponds to the target running time, the refrigeration device 10 is switched to its defrosting operation, which is represented by an operation block 97.
- both the compressor 14 and the fan 18 are switched off, while the defrosting heater 66 and a channel heater (not shown in detail) are put into operation.
- a predetermined maximum switch-back temperature TVmax is compared with the instantaneous temperature TVmom of the evaporator 19 in a further decision block 98, the instantaneous defrost time tAbmom with a predefined, empirically determined maximum in an immediately subsequent decision block 99 if the evaporator temperature is below the switch-back temperature Defrost time tAb / max is compared.
- decision block 98 is queried again in a loop feedback. If a positive result is given at one of the decision blocks 98 or 99, the defrosting process is terminated and a new set running time for the refrigeration device 10 is determined in a further operation section 100, based either on the maximum defrosting time or a defrosting time required for reaching the switch-back temperature . During this operating phase, the compressor 14 is also put into operation again, which then remains in continuous operation until a temperature is established on the evaporator 19 which enables a transition from the defrosting operation to the regulated cooling operation.
- the temperature TVmom determined on the evaporator 19 on the basis of the temperature sensor 31 is compared with a predetermined evaporator temperature TVRB, which enables the transition to normal operation, in a decision block 101, with the fan 18 only being started up in a further operating section 102 of the refrigeration device 10 when a positive result is obtained at decision block 101, while otherwise the fan 18 remains shut down until the predetermined evaporator temperature that enables the transition to normal operation is reached.
- the refrigeration device 10 is returned to an operating state which enables controlled cooling operation, this being indicated by a return from the operating section 102 to the operating section 93 within the flowchart.
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- 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)
- Defrosting Systems (AREA)
Description
- Fig. 1
- in vereinfachter, schematischer Darstellung ein Umluft-Kältegerät, dessen Kühl- und Abtauvorgang durch eine elektronische Steuereinrichtung gesteuert ist, von der Seite in Schnittdarstellung,
- Fig. 2
- die elektronische Steuereinrichtung, aufgebaut aus diskreten elektronischen Bauelementen in vereinfachter Blockbild-Darstellung,
- Fig. 3
- schematisch die elektronische Steuereinrichtung,gebildet durch einen Mikroprozessor und
- Fig. 4
- einen Verfahrensablauf eines Arbeitsverfahrens für die elektronische Steuereinrichtung.
Claims (8)
- Steuereinrichtung (30, 80) zum Betrieb eines Kühl- oder Gefriergerätes (10) mit wenigstens einem von einer Tür (12) verschließbaren Innenraum, welcher von einem in einem Kältekreislauf liegenden Verdampfer (19) gekühlt wird, der von Zeit zu Zeit einem automatischen Abtauvorgang unterzogen wird, der durch die eine Abtauvorrichtung steuernde Steuereinrichtung (30, 80) eingeleitet und beendet wird, wobei während der Dauer des Abtauvorganges das Kühl- oder Gefriergerät (10) von seinem Kühlbetrieb in seinen Abtaubetrieb übergeführt wird, wobei die Dauer des Abtauvorganges zur Bestimmung der Solllaufzeit des sich an den Abtauvorgang anschließenden Kühlbetriebs dient, dadurch gekennzeichnet, dass die steuereinrichtung Mittel (30, 80) enthält, die vor der Einleitung des Abtauvorganges den Verdichter (14) des Kühl- oder Gefriergerätes (10) für eine bestimmte Zeit in Betrieb setzen, um sicherzustellen, dass sich das eingelagerte Gut während des Abtauvorganges nicht unzulässig hoch erwärmt.
- Steuereinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Solllaufzeit des durch die Dauer des Abtauvorganges bestimmten Kühlbetriebs durch zueinander abgestufte, in Datenspeichern (72, 81) hinterlegte Abtauzeitintervalle bestimmt ist, von denen jeweils eine entsprechende Solllaufzeit des Kühlbetriebs fest zugeordnet ist.
- Steuereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Solllaufzeit während des Kühlbetriebs um einen sich aus der Anzahl der Türöffnungen und der Türöffnungsdauer ermittelten Zeitwert verkürzt wird.
- Steuereinrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Solllaufzeit während des Kühlbetriebs sowohl um einen sich aus der Anzahl der Türöffnungen und der Türöffnungsdauer ermittelten Zeitwert als auch um die Laufzeiten eines im Kältekreislauf liegenden Verdichters (14) gekürzt wird.
- Steuereinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Solllaufzeit im Kühlbetrieb mit der aktuellen Laufzeit im Kühlbetrieb verglichen wird, wobei bei Gleichheit der beiden Laufzeiten der Abtauvorgang erst nach Ablauf einer Mindestgerätelaufzeit eingeleitet wird.
- Steuereinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel (30) durch eine elektronische Schaltungsanordnung gebildet sind.
- Steuereinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel (80) durch einen programmierbaren Mikroprozessor gebildet sind.
- Verfahren zum Betrieb einer Steuereinrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass nach jeder Inbetriebnahme des Kühl- oder Gefriergerätes (10) eine empirisch ermittelte, anfängliche Solllaufzeit gleich der Solllaufzeit für den Kühlbetrieb gesetzt wird, welche bei jeder Türöffnung um einen dazu korrespondierenden Zeitwert verringert und in gewissen Zeitabständen mit der aktuellen Laufzeit des Gerätes (10) verglichen wird, wobei bei Gleichheit oder Überschreiten der Solllaufzeit nach Ablauf einer Mindestlaufzeit eine Abtauphase eines Verdampfers (14) eingeleitet wird, durch deren Dauer ein Zeitwert für die Solllaufzeit des nachfolgenden Kühlbetriebs bestimmt ist, wobei vor der Einleitung des Abtauvorganges eine Verdichterlaufzeit vorgeschaltet ist, um sicherzustellen, dass sich das eingelagerte Gut während des Abtauvorganges nicht unzulässig hoch erwärmt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4418874A DE4418874A1 (de) | 1994-05-30 | 1994-05-30 | Steuereinrichtung zum Betrieb eines Kühl- oder Gefriergerätes |
DE4418874 | 1994-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0690277A1 EP0690277A1 (de) | 1996-01-03 |
EP0690277B1 true EP0690277B1 (de) | 2001-10-04 |
Family
ID=6519352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95107986A Expired - Lifetime EP0690277B1 (de) | 1994-05-30 | 1995-05-24 | Steuereinrichtung zum Betrieb eines Kühl- oder Gefriergerätes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0690277B1 (de) |
CN (1) | CN1080408C (de) |
DE (2) | DE4418874A1 (de) |
ES (1) | ES2167384T3 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH691236A5 (de) * | 1996-10-14 | 2001-05-31 | Forster Ag Hermann | Verfahren zum Betrieb eines Haushalts-Kühlschrankes. |
DE19740190A1 (de) * | 1997-09-12 | 1999-03-18 | Bosch Siemens Hausgeraete | Verfahren zum Betreiben eines Kältegerätes |
DE69923531T2 (de) * | 1999-02-19 | 2006-03-30 | Ranco Inc. Of Delaware, Wilmington | Steuervorrichtung und Verfahren zum Steuern des Abtauvorganges in einem Kühlschrank |
US6205800B1 (en) * | 1999-05-12 | 2001-03-27 | Carrier Corporation | Microprocessor controlled demand defrost for a cooled enclosure |
EP1178271B1 (de) * | 2000-08-02 | 2006-06-07 | Siebe Appliance Controls GmbH | Elektronische Regelvorrichtung für Kühl- und Gefriergeräte |
EP1180652B1 (de) * | 2000-08-18 | 2006-09-27 | Ranco Incorporated of Delaware | Steuervorrichtung und Verfahren zum Steuern des Abtauvorgangs in einem Kühlschrank |
JP2005180817A (ja) * | 2003-12-19 | 2005-07-07 | Nakano Refrigerators Co Ltd | 冷凍・冷蔵設備の集中管理システム |
EP2541174B1 (de) * | 2010-02-23 | 2020-10-14 | LG Electronics Inc. | Kühlschrank |
CN103486781B (zh) * | 2012-06-13 | 2015-08-19 | 珠海格力电器股份有限公司 | 空调化霜方法及装置 |
CN105650801B (zh) * | 2014-12-08 | 2019-04-16 | Tcl空调器(中山)有限公司 | 控制空调进入除霜模式的方法、装置及空调器 |
CN105276900B (zh) * | 2015-03-12 | 2018-10-26 | 合肥美的电冰箱有限公司 | 冰箱及其化霜控制方法 |
WO2017149664A1 (ja) * | 2016-03-01 | 2017-09-08 | 三菱電機株式会社 | 冷蔵庫 |
CN106052295B (zh) * | 2016-06-14 | 2018-06-12 | 南京创维家用电器有限公司 | 冰箱的控制方法及装置 |
US11561037B2 (en) * | 2018-11-04 | 2023-01-24 | Elemental Machines, Inc. | Method and apparatus for determining freezer status |
CN113915881B (zh) * | 2021-04-09 | 2022-12-06 | 海信冰箱有限公司 | 一种冰箱及其化霜控制方法 |
CN113803941B (zh) * | 2021-09-30 | 2022-06-07 | 珠海格力电器股份有限公司 | 一种风道结构、制冷机组、控制方法及存储介质 |
CN114111180B (zh) * | 2021-11-30 | 2024-02-06 | Tcl家用电器(合肥)有限公司 | 化霜控制方法、冰箱和计算机可读存储介质 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4156350A (en) * | 1977-12-27 | 1979-05-29 | General Electric Company | Refrigeration apparatus demand defrost control system and method |
US4251988A (en) * | 1978-12-08 | 1981-02-24 | Amf Incorporated | Defrosting system using actual defrosting time as a controlling parameter |
US4680940A (en) * | 1979-06-20 | 1987-07-21 | Vaughn Eldon D | Adaptive defrost control and method |
US4327557A (en) * | 1980-05-30 | 1982-05-04 | Whirlpool Corporation | Adaptive defrost control system |
US4297852A (en) * | 1980-07-17 | 1981-11-03 | General Electric Company | Refrigerator defrost control with control of time interval between defrost cycles |
US4481785A (en) * | 1982-07-28 | 1984-11-13 | Whirlpool Corporation | Adaptive defrost control system for a refrigerator |
DE3235642A1 (de) * | 1982-09-25 | 1984-03-29 | 3 E Elektronik-Elektro-Energieanlagen Baugesellschaft mbH, 5500 Trier | Einrichtung zur elektrischen abtauregelung fuer den verdampfer einer kaelteanlage |
US4750332A (en) * | 1986-03-05 | 1988-06-14 | Eaton Corporation | Refrigeration control system with self-adjusting defrost interval |
US4938027A (en) * | 1989-11-06 | 1990-07-03 | Amana Refrigeration, Inc. | Apparatus and method for defrosting refrigerator in vacation mode |
US5363669A (en) * | 1992-11-18 | 1994-11-15 | Whirlpool Corporation | Defrost cycle controller |
-
1994
- 1994-05-30 DE DE4418874A patent/DE4418874A1/de not_active Ceased
-
1995
- 1995-05-24 ES ES95107986T patent/ES2167384T3/es not_active Expired - Lifetime
- 1995-05-24 EP EP95107986A patent/EP0690277B1/de not_active Expired - Lifetime
- 1995-05-24 DE DE59509652T patent/DE59509652D1/de not_active Expired - Lifetime
- 1995-05-30 CN CN95106611A patent/CN1080408C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1122437A (zh) | 1996-05-15 |
CN1080408C (zh) | 2002-03-06 |
EP0690277A1 (de) | 1996-01-03 |
ES2167384T3 (es) | 2002-05-16 |
DE59509652D1 (de) | 2001-11-08 |
DE4418874A1 (de) | 1996-03-21 |
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