CN112484367A - Refrigerator and method for refrigerator - Google Patents

Refrigerator and method for refrigerator Download PDF

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Publication number
CN112484367A
CN112484367A CN201910862962.0A CN201910862962A CN112484367A CN 112484367 A CN112484367 A CN 112484367A CN 201910862962 A CN201910862962 A CN 201910862962A CN 112484367 A CN112484367 A CN 112484367A
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CN
China
Prior art keywords
temperature
speed
storage chamber
compressor
storage compartment
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.)
Pending
Application number
CN201910862962.0A
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Chinese (zh)
Inventor
朱啟武
朱卫忠
刘翔宇
沈贵可
王宝阳
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 Electrical Appliances Jiangsu Co Ltd
Bo Xihua Electric Jiangsu Co Ltd
BSH Hausgeraete GmbH
Original Assignee
Bo Xihua Electric Jiangsu Co Ltd
BSH 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 Bo Xihua Electric Jiangsu Co Ltd, BSH Hausgeraete GmbH filed Critical Bo Xihua Electric Jiangsu Co Ltd
Priority to CN201910862962.0A priority Critical patent/CN112484367A/en
Publication of CN112484367A publication Critical patent/CN112484367A/en
Pending legal-status Critical Current

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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • 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
    • F25D2600/00—Control issues
    • F25D2600/04—Controlling heat transfer

Abstract

The embodiment of the invention relates to a refrigerator and a method for the same. The method for the refrigerator includes operating the compressor (4) to cool a storage compartment (1), and adjusting the speed of the compressor according to the temperature of the storage compartment so that the temperature of the storage compartment tends to be higher than a shutdown temperature (T) of the storage compartmentstop) Target temperature (T) oftarget)。

Description

Refrigerator and method for refrigerator
[ technical field ]
The embodiment of the invention relates to a refrigerator and a method for the same.
[ background art ]
The current refrigerator generally determines the starting temperature and the stopping temperature of a storage chamber according to the set temperature of the storage chamber. For example, when the temperature of the storage chamber reaches the power-on temperature, the refrigerator determines that cooling is required for the storage chamber. When the temperature of the storage compartment is cooled to the shutdown temperature, it is determined that the storage compartment cooling can be stopped. The temperature of the storage compartment fluctuates widely between the start-up temperature and the shut-down temperature, and the compressor of the refrigeration system is frequently started and shut down.
[ summary of the invention ]
It is an object of embodiments of the present invention to provide an improved method for a refrigerator and a refrigerator.
Accordingly, an aspect of embodiments of the present invention is directed to a method for a refrigerator. The method for the refrigerator comprises the following steps: the compressor is operated to cool a storage chamber and the speed of the compressor is adjusted according to the temperature of the storage chamber so that the temperature of the storage chamber tends to a target temperature higher than the shutdown temperature of the storage chamber.
Since the speed of the compressor is adjusted according to the temperature of the storage chamber so that the temperature of the storage chamber tends to be higher than the target temperature of the shutdown temperature, it becomes possible to control the temperature of the storage chamber at or near the target temperature without reaching the shutdown temperature. It is possible for the compressor to be operated for a long time to cool the storage chamber. Since the temperature of the storage compartment and the speed of the compressor can be controlled in a closed loop, it is possible to achieve a balance between the speed of the compressor and the cold requirement of the storage compartment at least for some time.
Compared with the on-off cooling mode (the mode that the temperature of the storage chamber is cooled to be towards the off temperature, the storage chamber is stopped to be cooled after the temperature of the storage chamber reaches the temperature of the storage chamber stopping cooling, and the storage chamber is cooled after the temperature of the storage chamber is increased to the starting temperature of the storage chamber), the temperature control of the storage chamber is more accurate, the on-off frequency of the compressor can be reduced, and therefore noise is reduced and energy efficiency is improved.
The trend of the temperature of the storage compartment toward the target temperature of the storage compartment may include the temperature of the storage compartment being maintained substantially at the target temperature and/or fluctuating slightly about the target temperature.
For example, the temperature of the storage chamber may range from a target temperature that is far from the storage chamber to a target temperature that is gradually closer to the storage chamber. As another example, the temperature of the storage chamber may be maintained substantially at or slightly fluctuating around the target temperature of the storage chamber by adjusting the speed of the compressor as the temperature of the storage chamber approaches the target temperature.
Theoretically, if the speed and power adjustment range of the compressor is large enough, it is possible for the compressor to maintain operation for long periods of time without external demands (e.g., defrost, power outage). This does not exclude some cases: the compressor stops operating the storage compartment when the ambient temperature is so low that the compressor cannot avoid the temperature of the storage compartment falling to the shutdown temperature of the first storage compartment at the minimum operating speed/power.
In a possible embodiment, the target temperature may be determined according to a user-set temperature of the storage compartment. For example, the target temperature may be equal to a user-set temperature.
In a possible embodiment, adjusting the speed of the compressor to tend to be higher than the target temperature according to the temperature of the storage chamber may include: a cool-down stage of increasing the compressor speed to bring the temperature of the storage chamber closer from above the target temperature toward the target temperature, and a warm-up stage of decreasing the compressor speed to bring the temperature of the storage chamber closer from below the target temperature toward the target temperature. The temperature of the storage chamber is brought to the target temperature by fluctuating the temperature of the storage chamber around the target temperature. In the equilibrium state, the temperature of the storage chamber can be maintained at the target temperature for a long time or fluctuate a little around the target temperature. In this way, the compressor can be operated continuously at a speed that is more consistent with the cold requirement of the storage compartment, which is beneficial for energy efficiency.
In a possible embodiment, adjusting the speed of the compressor towards the target temperature according to the temperature of the storage chamber comprises: when the temperature of the storage chamber decreases toward the target temperature, the speed of the compressor decreases in successive speed steps as the temperature of the storage chamber decreases.
In a possible embodiment, the speed of the compressor may decrease in successive steps with the temperature of the storage chamber may comprise: the speed step closer to the target temperature is continued for a longer period of time as the temperature of the storage chamber decreases.
In a possible embodiment, the speed of the compressor may decrease in successive steps with the temperature of the storage chamber may comprise: the speed steps between adjacent speed steps are equal. This is particularly advantageous for the compressor to run at a steady speed.
In a possible embodiment, adjusting the speed of the compressor according to the temperature of the storage chamber may include: adjusting a speed of the compressor according to a temperature difference between the temperature of the storage chamber and the target temperature. This facilitates a quick and accurate achievement of a target temperature of the storage compartment towards the storage compartment.
In a possible embodiment, adjusting the speed of the compressor based on the temperature difference between the temperature of the storage chamber and the target temperature may include: adjusting a speed of the compressor based on an average temperature of the storage chamber or a temperature difference between a current instantaneous temperature of the storage chamber and the target temperature within a current time interval.
In a possible embodiment, adjusting the speed of the compressor according to the temperature of the storage chamber may include: the compressor speed is determined based on a base speed and an adjustment speed determined based on a temperature of the storage chamber.
In a possible embodiment, the adjustment speed may be determined based on a temperature difference between the temperature of the storage chamber and the target temperature.
In a possible embodiment, the base speed may be variable based on an ambient temperature and/or the target temperature.
In a possible embodiment, adjusting the speed of the compressor based on the temperature difference between the temperature of the storage chamber and the target temperature may include determining the adjustment speed according to the temperature difference between the temperature of the storage chamber and the target temperature and a speed amplitude modulation.
In a possible embodiment, the speed amplitude modulation may be variable in relation to the temperature of the storage compartment.
In a possible embodiment, the regulation speed is determined by amplitude modulation at a first speed when the temperature of the storage compartment is greater than a first threshold temperature, and at a second speed when the temperature of the storage compartment is less than the first threshold temperature; or, when the temperature difference between the temperature of the storage chamber and the target temperature is greater than a threshold temperature difference, determining the adjustment speed with a first speed amplitude modulation, and when the temperature difference between the temperature of the storage chamber and the target temperature is less than a threshold temperature difference, determining the adjustment speed with a second speed amplitude modulation; wherein the first speed amplitude modulation is greater than the second speed amplitude modulation.
In a possible embodiment, the first threshold temperature may be equal to or higher than a starting temperature of the storage compartment, and the threshold temperature difference is greater than or equal to a difference between the starting temperature and a target temperature of the storage compartment.
In a possible embodiment, adjusting the speed of the compressor according to the temperature of the storage chamber may comprise: a stage of adjusting the compressor speed based on a first speed amplitude modulation; and a phase of modulating the speed of the compressor based on the second speed amplitude; wherein the first speed amplitude modulation is greater than the second speed amplitude modulation.
In a possible embodiment, the first phase may be after a defrosting procedure and the second phase after completion of the first phase.
In a possible embodiment, after the defrosting process is completed, the compressor is operated to cool the storage chamber to between the shutdown temperature and the target temperature and then to rise toward the target temperature.
In a possible embodiment, a defrosting recovery mode may be entered after the defrosting process is completed, in which the compressor is operated to cool the storage compartment to a second threshold temperature between a start-up temperature and the stop temperature of the storage compartment, and when the temperature of the storage compartment reaches the second threshold temperature, a normal cooling mode is entered from the defrosting recovery mode, in which the speed of the compressor is adjusted according to the temperature of the storage compartment so that the temperature of the storage compartment approaches the target temperature.
In a possible embodiment, while the compressor is operated to simultaneously cool the storage chamber and the second storage chamber thermally isolated from the storage chamber, the speed of the compressor is adjusted according to the temperature of the storage chamber to bring the temperature of the storage chamber toward the target temperature, and the second storage chamber is cooled with the shutdown temperature of the second storage chamber as the target temperature of the second storage chamber to stop cooling the second storage chamber when the temperature of the second storage chamber drops to the shutdown temperature of the second storage chamber. Since the cooling second storage chamber uses the shutdown temperature of the second storage chamber as the target temperature of the second storage chamber, even when both the storage chamber and the second storage chamber have cooling requirements, it is still possible to complete the cooling of the second storage chamber relatively quickly while the storage chamber still maintains the set temperature of the storage chamber, so that it is possible for the storage chamber and the second storage chamber to be cooled simultaneously and for the respective temperature control logics to be substantially maintained, i.e., in the case of a refrigerator having at least two storage chambers, it is still possible for the storage chambers to be temperature-controlled accurately for a long time and for the compressor to be operated continuously.
In a possible embodiment, when the compressor is operated to cool the storage chamber and the second storage chamber simultaneously, a refrigerant is supplied to a first refrigeration line and a second refrigeration line connected in parallel, wherein the first refrigeration line is connected to an inlet of a first evaporator to cool the storage chamber, and the second refrigeration line is connected to an inlet of a second evaporator to cool the second storage chamber. Since it is not necessary to completely stop the operation of the storage chamber when cooling the second storage chamber, it is possible for the compressor to continue the operation of the storage chamber.
In a possible embodiment, the speed of the compressor is operated in a fixed mode or a fixed speed when the compressor is operated to cool only the second storage chamber.
In a possible embodiment, supplying refrigerant to the first refrigeration line and the second refrigeration line in parallel includes preferentially supplying refrigerant to the second refrigeration line of the first refrigeration line and the second refrigeration line. Thereby, it is ensured that the second storage chamber can be cooled in time.
In a possible embodiment, the storage compartment is a freezer compartment and the second storage compartment comprises a non-freezing temperature range. The second storage room may be, for example, a refrigerating room, a temperature-changing room, or an ice-temperature room.
Another aspect of embodiments of the present invention relates to a method for a refrigerator. The method for the refrigerator comprises the following steps: the method includes operating the compressor to cool a storage chamber and adjusting a speed of the compressor based on a temperature difference between a temperature of the storage chamber and a target temperature, wherein the target temperature is higher than a shutdown temperature of the storage chamber.
In this way, the temperature of the storage chamber can be quickly and accurately approximated to the target temperature.
In a possible embodiment, adjusting the speed of the compressor based on the temperature difference between the temperature of the storage chamber and the target temperature includes: adjusting a speed of the compressor based on a temperature difference between an average temperature of the storage chamber and the target temperature within a current time interval.
Yet another aspect of embodiments of the present invention relates to a method for a refrigerator. The method for a refrigerator includes operating a compressor to cool a storage chamber and determining a speed of the compressor based on a base speed and an adjustment speed adjusted based on a temperature of the storage chamber.
In a possible embodiment, the adjustment speed is determined as a function of the temperature difference between the temperature of the storage compartment and the set temperature of the storage compartment.
In a possible embodiment, the base speed is determined from the set temperature and/or the ambient temperature.
Yet another aspect of embodiments of the present invention relates to a method for a refrigerator. A method for a refrigerator, comprising: operating a compressor to cool a storage chamber, adjusting a speed of the compressor according to a temperature of the storage chamber, wherein the speed of the compressor is stepped down at a continuous speed as the temperature of the storage chamber is decreased.
In a possible embodiment, the speed step closer to the set temperature of the storage compartment lasts longer as the temperature of the storage compartment decreases.
Another aspect of embodiments of the present invention relates to a refrigerator adapted to perform the method as in any one of the above.
[ description of the drawings ]
Fig. 1 is a schematic view of a refrigerator according to one embodiment of the present invention.
Fig. 2 is a system diagram of a refrigerator according to one embodiment of the present invention.
Fig. 3 is a flow chart diagram of a method for a refrigerator according to one embodiment of the present invention.
Fig. 4 is a schematic variation diagram regarding a compressor speed and a storage compartment temperature obtained by performing a method for a refrigerator according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method for a refrigerator according to another embodiment of the present invention.
Fig. 6 is a flowchart illustrating a method for a refrigerator according to still another embodiment of the present invention.
Fig. 7 is a schematic view of a refrigerator according to another embodiment of the present invention.
Fig. 8 is a schematic view of a refrigeration system of a refrigerator according to another embodiment of the present invention.
Fig. 9 is a schematic view of a refrigeration system of a refrigerator according to still another embodiment of the present invention.
Fig. 10 is a system diagram of a refrigerator according to another embodiment of the present invention.
Fig. 11 is a flowchart of a method for a refrigerator according to still another embodiment of the present invention.
Fig. 12 is a flowchart of a method for a refrigerator according to still another embodiment of the present invention.
Fig. 13 is a flowchart of a method for a refrigerator according to still another embodiment of the present invention.
Fig. 14 is a schematic variation diagram regarding a compressor speed, a first storage compartment temperature, and a second storage compartment temperature, which is obtained according to a method for a refrigerator performing still another embodiment of the present invention.
[ detailed description of the invention ]
Fig. 1 is a schematic diagram of a refrigeration system 3 for a refrigerator according to one embodiment of the present invention. The refrigeration system 3 is used to cool at least one storage compartment of the refrigerator, such as the storage compartment 1.
The refrigeration system 3 may include a compressor 4, a condenser 5, an expansion device 76, and an evaporator 8 connected by lines carrying refrigerant. The refrigerant evaporates in the evaporator 8 to cool the storage chamber 1. The refrigerant is delivered from the compressor 4 through the condenser 5 to the evaporator 8. The arrows on the lines connecting the various components in fig. 1 schematically show the direction of flow of the refrigerant.
The refrigeration system 3 may comprise a dryer 6 downstream of the condenser 5.
The refrigeration system 3 may comprise a fluid control unit 7 to open or close the refrigeration circuit. The fluid control unit 7 may comprise a valve.
Referring to fig. 2 in conjunction with fig. 1, the refrigerator may include a temperature detection unit 9 to detect the temperature of the storage chamber 1. The temperature detection unit 9 may include at least one temperature sensor.
As shown in fig. 2, the refrigerator 100 may include an input unit 10 to receive a user input. The input unit 10 may receive a set temperature T of a user with respect to the storage chamber 1set. Usually, the set temperature T of the storage room 1setIs the user's desired temperature with respect to the storage compartment 1.
After the user sets the desired temperature of the storage chamber 1, if the input unit 10 does not receive a new input about the set temperature from the user, the original set temperature is maintained.
The refrigerator 100 may include a control unit 11. The control unit 11 is coupled to the temperature detection unit 9, the input unit 10 and the compressor 4. The control unit 11 controls the compressor 4 according to the feedback of the temperature detection unit 9.
The control unit 11 may also be coupled with the evaporator fan 12 and/or the condenser fan 51. The evaporator fan 12 and/or the condenser fan 51 may be operated according to instructions of the control unit 11.
Environmental parameters such as ambient temperature and/or ambient humidity may also be input parameters for the control unit 11 to control the refrigeration system 3. The refrigerator 100 may include an ambient temperature sensor 93 to detect a temperature of an environment in which the refrigerator 100 is located. The refrigerator 100 may include an ambient humidity sensor (not shown) to detect the humidity of the environment in which the refrigerator 100 is located.
In some embodiments, the input unit 10 and/or the control unit 11 may be at least partially provided on the main body 101 of the refrigerator 100 and/or a door (not shown) to close the storage chamber. In other embodiments, the input unit 10 and/or the control unit 11 of the refrigerator 100 are at least partially disposed in a remote device independent from the main body 101/the outside of the refrigerator door. For example, the user can set the set temperatures of the first storage chamber 201 and the second storage chamber 2 through a remote terminal. As another example, the refrigeration system 3 is controlled by transmitting temperature information obtained by a temperature detection unit provided in the refrigerator to the control unit 11 located at a remote server, and based on an instruction of the remote control unit 11.
The control unit 11 can be set according to the set temperature T of the storage chamber 1setDetermining the shutdown temperature of the storage compartmentTstop(hereinafter referred to as "shutdown temperatureTstop"). Shutdown temperatureTstopBelow the set temperature T of the storage compartment 1set. When the temperature of the storage chamber 1 drops to the stop temperatureTstopWhen so, the control unit 11 may determine that the temperature of the storage compartment 1 has satisfied the condition that the refrigeration system 3 stops cooling the storage compartment 1.
The control unit 11 can be set according to the set temperature T of the storage chamber 1setDetermining the starting temperature of the storage compartmentTstart. Starting temperatureTstartAbove the set temperature T of the storage compartment 1set. When the temperature of the storage chamber 1 is higher than the starting temperatureTstartAt this time, the control unit 11 may determine that the temperature of the storage compartment 1 has satisfied the condition that the refrigeration system 3 starts cooling the storage compartment 1.
In operating the compressor 4 to cool the storage chamber 1, the speed of the compressor 4 is adjusted according to the temperature of the storage chamber 1 so that the temperature of the storage chamber 1 tends to be higher than the shutdown temperature of the storage chamber 1TstopTarget temperature T oftarget。
The temperature of the storage chamber approaches the target temperature TtargetMay include the temperature of the storage compartment gradually approaching the target temperature T from a high level higher than the target temperature of the storage compartmenttargetAnd maintained at the target temperature TtargetOr in the case of micro-amplitude fluctuations around the target temperature.
Adjusting the speed of the compressor 4 to make the temperature of the storage chamber 1 higher than the shutdown temperature by using the temperature of the storage chamber 1TstopAnd therefore, the compressor 4 can be operated for a long time. This not only contributes to the reductionThe frequency of the start-up and shut-down of the compressor 4 also contributes to the energy efficiency of the refrigerator 100.
It should be understood that when the temperature detecting unit detects the temperature of the storage chamber 1, if the temperature detecting unit cannot truly represent the actual temperature of the storage chamber 1 due to the position relationship, that is, if there is a difference between the detected value obtained by the temperature detecting unit and the actual temperature of the storage chamber, it is a common practice to correct the detected temperature or the actual temperature so that the detected temperature or the actual temperature can be compared under a unified standard. For example, the control unit corrects the detected value obtained by the temperature detection unit to its corresponding actual temperature, or the control unit corrects the actual temperature that can be sensed by the user (e.g., a target temperature displayed on a user interface, an actual temperature in the storage chamber) to be under the same standard as the detected value of the temperature detection unit. For example, the control means compares the temperature obtained by the corrected temperature detection means with a temperature value under an actual temperature standard (for example, a numerical value of a set temperature of the storage room displayed to the user). For another example, the control unit converts the actual temperature that can be sensed by the user and then compares the converted actual temperature with the temperature obtained by the temperature detection unit. Correspondingly, the shutdown temperature and the startup temperature of the storage room can also be determined according to the value of the converted set temperature in the control unit so as to be compared with the detected temperature obtained by the temperature detection unit. Therefore, the "temperature of the storage room", "set temperature of the storage room", "target temperature of the storage room", "starting temperature of the storage room", and "stopping temperature of the storage room" should be under the same standard, but not limited to, a detection temperature standard or an actual temperature standard.
Fig. 3 is a schematic flow chart of a method for the refrigerator 100 according to one embodiment of the present invention. As shown in fig. 3, in step S11, the temperature of the storage chamber 1 is detected. In step S12, it is determined whether or not there is a cooling request from the storage room 1 based on the detected temperature of the storage room 1.
If it is confirmed in step 12 that the storage compartment 1 has a cooling request, the speed of the compressor 4 is adjusted according to the temperature of the storage compartment 1 so that the temperature of the storage compartment 1 tends to be higher than the stop temperature of the storage compartment 1TstopTarget temperature T oftarget。
Target temperature TtargetCan be adjusted according to the set temperature T of the storage chamber 1setAnd (4) determining. Target temperature TtargetMay be the set temperature T of the storage chamber 1set. The temperature of the storage chamber 1 may be maintained at the set temperature T for a long timesetOr around a set temperature TsetThe micro-amplitude fluctuates so that the user's desire is satisfied more precisely. The temperature of the storage chamber 1 is maintained at the target temperature T for a long time without the interference of external factorstargetAre possible.
In a degraded embodiment, the target temperature TtargetCan approach the set temperature Tset. E.g. target temperature TtargetCan be adjusted to set the temperature TsetWithin plus or minus 0.3 k.
If it is confirmed in step 12 that the storage compartment 1 has no cooling request, cooling of the storage compartment 1 is stopped or cooling of the storage compartment 1 is kept off.
Adjusting the speed of the compressor 4 according to the temperature of the storage chamber 1 may include: increasing the speed of the compressor 4 to bring the temperature of the storage chamber 4 from above the target temperature TtargetTowards a target temperature TtargetA reduced cool-down phase and a reduced speed of the compressor 4 to bring the temperature of the storage compartment 1 from below the target temperature TtargetA temperature raising stage of raising the temperature toward the target temperature. The temperature of the storage chamber 1 can be lowered below the target temperature T by reducing the speed of the compressor 4targetThen continuously falls to the shutdown temperature TstopAnd the refrigeration system 3 is stopped to refrigerate the storage compartment 1.
When the temperature raising phase and the temperature lowering phase are alternately performed, it is advantageous to make the temperature of the storage room 1 around the target temperature TtargetThe temperature of the storage chamber 1 is enabled to approach the target temperature T by small fluctuationtarget。
In some embodiments, adjusting the speed of the compressor toward the target temperature according to the temperature of the storage chamber may include: as the temperature of the storage chamber decreases toward the target temperature, particularly downward from a temperature above the start-up temperature, the speed of the compressor decreases in successive speed steps as the temperature of the storage chamber decreases.
In some embodiments, the speed of the compressor decreases in successive steps as the temperature of the storage chamber decreases to include: the duration of the speed step increases gradually as the temperature of the storage chamber decreases.
In a possible embodiment, the speed of the compressor may decrease in successive steps with the temperature of the storage chamber may comprise: the speed steps between adjacent speed steps are equal.
Adjusting the speed of the compressor 4 according to the temperature of the storage chamber 1 may include: when the calculated compressor speed is higher than the maximum speed of the compressor 4, the operation is performed at the maximum speed of the compressor 4. When the calculated compressor speed is less than the minimum speed of the compressor 4, the compressor is operated at the minimum speed of the compressor 4.
In some embodiments, it may be based on the temperature of the storage compartment 1 and the target temperature TtargetThe temperature difference therebetween to regulate the speed of the compressor 4.
Based on the temperature of the storage compartment 1 and the target temperature TtargetThe temperature difference therebetween to adjust the speed of the compressor 4 may include: based on the average temperature of the storage compartment 1 or the current instantaneous temperature of the storage compartment 1 and the target temperature T during the current time intervaltargetThe temperature difference therebetween to regulate the speed of the compressor 4.
The current instantaneous temperature may be the most recently obtained storage compartment temperature. The average temperature in the current time interval may comprise an average of the first N sampled temperatures including the most recently obtained instantaneous temperature. N may for example be between 3 and 30.
The speed of the compressor is adjusted according to the average temperature of the storage chamber obtained from the plurality of sampled temperatures in the current time interval, which is beneficial to more stable operation of the compressor 4. Adjusting the speed of the compressor in dependence on the instantaneous temperature of the storage chamber facilitates a faster reaction of the compressor to adjust the temperature of the storage chamber.
In some embodiments, adjusting the speed of the compressor 4 according to the temperature of the storage chamber 1 may include: the compressor speed is determined based on a base speed S0 and an adjustment speed Sv determined according to the temperature of the storage chamber. For example, the compressor speed may be equal to S0+ Sv.
In some embodiments, the base speed S0 may be the ambient temperature and/or the set temperature TsetThe speed of the match. Thus, the base speed S0 may be based on the ambient temperature and/or the target temperature TtargetBut may vary.
The base speed S0 may be preset. For example, the current ambient temperature and the set temperature T can be usedsetTarget temperature TtargetAnd a base speed S0 corresponding thereto is determined.
The regulation speed Sv may be based on the temperature T of the storage compartment and the target temperature TtargetThe temperature difference therebetween. Can be based on the temperature of the storage chamber and the target temperature TtargetThe temperature difference therebetween to determine whether to operate at a speed higher than the base speed S0 or lower than the base speed S0.
For example, when the temperature of the storage chamber 1 and the target temperature TtargetThe temperature difference therebetween is negative (when the temperature of the storage chamber 1 is lower than the target temperature T)target) At a speed lower than the base speed S0. Otherwise, the operation is performed at a speed higher than the base speed S0.
It was proved through our experiments that the temperature according to the storage room and the target temperature T were used on the basis of the base speed S0targetThe speed of the compressor 4 is determined by determining the regulating speed Sv based speed S0 from the temperature difference therebetween, which is advantageous for achieving a faster approach of the temperature of the storage chamber 1 to the target temperature Ttarget。
Temperature of the storage chamber 1 and target temperature TtargetThe temperature difference therebetween may be in a linear relationship with the adjustment speed Sv. In alternative embodiments, the temperature of the storage compartment 1 and the target temperature T may be varied according totargetThe temperature difference therebetween is within a range to determine the corresponding adjustment speed Sv.
The adjustment speed Sv may be determined, for example, by increasing/decreasing a predetermined speed amplitude modulation per a predetermined temperature difference.
For example, the speed of m is increased or decreased per n temperature difference, n may be selected from +/- (0.1k to 0.3k), and m may be selected from 150 rpm to 300 rpm, for example.
Fig. 4 is a schematic variation diagram of a compressor speed S and a storage compartment temperature T obtained by performing a method for a refrigerator according to an embodiment of the present invention. Wherein the storage compartment temperature T represents the value of the temperature of the storage compartment 1 within the control unit 11.
In this example, the target temperature T of the storage compartmenttarget(in this embodiment, the set temperature T of the storage chamberset) Characterized in the control unit 11 as-20 degrees celsius. At an ambient temperature of 32 degrees Celsius, according to a target temperature TtargetSet temperature TsetDetermined starting temperature TstartAnd shutdown temperature TstopAt-19 degrees celsius and-22 degrees celsius, respectively.
Compressor speed S based on storage compartment temperature T and target temperature TtargetIs adjusted by the temperature difference at. In this exemplary embodiment, the adjustment is made in accordance with the temperature difference Δ T between the average temperature of the storage chamber 1 in the current sampling interval and the target temperature.
As shown in fig. 4, between T0 and T1, the average value of the temperature T of the storage chamber 1 within the sampling interval and the target temperature TtargetThe temperature difference therebetween is relatively high, and the speed of the compressor is calculated to be greater than or equal to the maximum speed Smax of the compressor, which is operated at the maximum speed Smax, based on the temperature difference Δ T between the average temperature of the storage chamber and the target temperature. In this exemplary embodiment, the compressor maximum speed Smax is 3000 revolutions per minute.
Between the time periods T0 and T1, the storage chamber temperature T rapidly drops.
Between T1 and T2, the compressor speed is varied with the average temperature of the storage compartment and the target temperature TtargetThe temperature difference Δ T of (a) gradually decreases. Since the compressor speed is adjusted according to the temperature difference Δ T, the temperature T of the storage chamber is varied from the target temperature TtargetThe closer the upper part is to the target temperature TtargetThe lower the compressor speed and thus the slower the reservoir temperature T changes. Thus, the closer to the target temperature TtargetThe slower the reservoir temperature T changes, the slower the compressor speed S changes.
Between the time periods T1 to T2, as the temperature T of the storage chamber decreases toward the target temperature, the speed of the compressor decreases with the temperature T of the storage chamber in successive speed steps S1, S2, …. Sn-1, Sn.
As shown in FIG. 4, as the temperature T of the storage chamber decreases, the speed steps S1, S2, …, Sn-1, Sn last for a longer period of time closer to the target temperature.
The speed step Δ S between adjacent speed steps S1 may be equal.
After T2, Δ T equals zero. The temperature T of the storage chamber is maintained at a target temperature TtargetThe compressor speed S runs at a constant low speed.
In the example shown in FIG. 4, the temperature T of the storage chamber and the target temperature T are determined according to the temperature TtargetThe temperature difference between them and the fixed speed amplitude modulation determine the adjustment speed Sv. In other embodiments, the temperature of the storage chamber and the target temperature T may be varied according to the temperature of the storage chambertargetThe temperature difference between them and the variable speed amplitude modulation determine the adjustment speed Sv.
The speed amplitude modulation may be variable in relation to the temperature of the storage compartment 1. The speed amplitude modulation may be variable in association with the temperature of the storage chamber 1 and may include: the regulation speed is determined by a first speed amplitude modulation when the temperature of the storage compartment 1 is greater than a first threshold temperature, and by a second speed amplitude modulation when the temperature of the storage compartment 1 is less than the first threshold temperature. The first speed amplitude modulation is greater than the second speed amplitude modulation. The determining whether the temperature of the storage chamber is greater than the first threshold temperature may be obtained by determining whether a current temperature of the storage chamber or an average temperature within a current time interval is greater than the first threshold temperature.
In an alternative embodiment, the speed amplitude modulation may be variable in relation to the temperature of the storage compartment 1 and may comprise: the adjustment speed is determined by amplitude modulation at a first speed when the temperature difference between the temperature of the storage compartment 1 and the target temperature is greater than a threshold temperature difference, and amplitude modulation at a second speed when the temperature difference between the temperature of the storage compartment 1 and the target temperature is less than the threshold temperature difference. Whether the temperature difference between the temperature of the storage compartment 1 and the target temperature is greater than a threshold temperature difference may be determined by determining the current temperature of the storage compartment or the average temperature and the target temperature T within the current time intervaltargetWhether the temperature difference therebetween is greater than the threshold valueTemperature difference.
Determining whether to use the first speed amplitude modulation or the second speed amplitude modulation to determine the compressor speed by the temperature of the storage compartment or the section of the temperature difference between the temperature of the storage compartment and the target temperature facilitates quick and stable adjustment of the storage compartment temperature to the target temperature TtargetNearby.
As an exemplary embodiment, as shown in fig. 5, when it is determined in step S23 that the current temperature of the storage compartment is higher than the first temperature threshold, the compressor speed is calculated at the first speed amplitude modulation in step S24. If it is determined in step S23 that the current temperature of the storage compartment is less than or equal to the first temperature threshold, the compressor speed is amplitude modulated at the second speed in step S25. The first speed amplitude modulation is greater than the second speed amplitude modulation.
In step S26, the compressor is operated according to the calculated speed. The compressor operating according to the calculated speed may include the compressor operating at the calculated speed, the compressor operating at a maximum speed when the calculated speed exceeds a maximum speed of the compressor, and the compressor operating at a minimum speed when the calculated speed is less than a minimum speed of the compressor.
In this way, when the temperature of the storage chamber 1 deviates from the target temperature TtargetWhen large, the temperature of the storage chamber 1 is made to move more quickly toward the target temperature T by adjusting the compressor speedtargetClose. When the temperature of the storage chamber 1 approaches the target temperature TtargetThe speed of the compressor 4 can be adjusted slightly to avoid drastic temperature fluctuations or drops in the storage compartment 1 to the storage compartment shutdown temperature Tstop。
The first threshold temperature may be higher than or equal to the starting temperature T of the storage compartment 1start. The threshold temperature difference may be greater than or equal to the boot temperature TstartAnd a target temperature TtargetThe difference between them.
The above illustration shows that the compressor speed can be determined by the base speed together with an adjustment speed determined by amplitude modulation at a variable speed. It should be understood that when the compressor speed is obtained by other calculation methods, the compressor speed may also be determined by a variable speed amplitude modulation based on the temperature of the storage chamber. For example, when the temperature of the storage compartment is above a first threshold temperature or the temperature difference between the temperature of the storage compartment and the target temperature is above a threshold temperature difference, an additional value may be assigned to the calculated compressor speed, such as multiplying the calculated compressor speed by a speed parameter greater than 1 or adding an additional speed value.
To improve the cooling efficiency, the refrigerator may run a defrosting process to remove ice/frost of the evaporator 8. During the defrost sequence, the compressor 4 is deactivated and a heat source (e.g., a heater) is operated to remove ice/frost attached to and near the evaporator 8. During defrosting, the temperature around the evaporator 8 and inside the storage chamber 1 rises.
After the defrosting process is finished, in order to rapidly cool the storage compartment 1, a defrosting restoration mode may be performed before the normal cooling mode is performed.
In the defrosting restoration mode, the compressor 4 is operated to rapidly cool the storage chamber 1. The compressor 4 may be operated at a fixed or variable high speed. For example, in the defrosting recovery mode, the speed of the compressor 4 may be adjusted according to the temperature of the storage chamber 1. The cooling speed of the storage compartment 1 can be increased by using a higher speed amplitude modulation in the defrosting restoration mode than in the normal cooling mode, compared to the normal cooling mode.
In one exemplary example, as shown in fig. 6, if it is determined that the storage compartment 1 is in the defrosting restoration mode in step S33, the speed of the compressor is calculated at the first speed amplitude modulation in step S34. If the storage compartment 1 is not in the defrost recovery mode, the speed of the compressor is calculated at a second speed amplitude modulation. Wherein the first speed amplitude modulation is greater than the second speed amplitude modulation.
The speed amplitude modulation to determine the speed of the compressor may be variable according to whether the storage compartment 1 is in the defrost recovery mode.
In step S36, the compressor 4 operates at the calculated speed according to step S34 or step S35. The compressor operating according to the calculated speed may include the compressor operating at the calculated speed, the compressor operating at a maximum speed when the calculated speed exceeds a maximum speed of the compressor, and the compressor operating at a minimum speed when the calculated speed is less than a minimum speed of the compressor.
The defrosting recovery mode may be exited when the temperature of the storage chamber reaches a second threshold temperature. Wherein the second threshold temperature is higher than the shutdown temperature Tstop. The second threshold temperature may be at the boot temperature TstopAnd shutdown temperature TstopIn the meantime. The second threshold temperature may be equal to the target temperature TtargetOr at a target temperature TtargetNearby.
After the defrosting recovery mode is finished, the compressor 4 continues to operate in the normal cooling mode, that is, the speed of the compressor 4 is adjusted according to the normal cooling mode to make the temperature of the storage chamber 1 approach the target temperature Ttarget。
When the second threshold temperature is equal to the target temperature TtargetOr at a target temperature TtargetWhen the temperature is near, the temperature of the storage chamber 1 which exits the defrosting recovery mode can still continuously drop to reach the shutdown temperature TstopAnd a target temperature TtargetIn the meantime. When the compressor 4 is operated in the normal cooling mode, the temperature of the storage chamber is gradually moved toward the target temperature TtargetAnd (4) rising.
Therefore, after the defrosting process, the compressor 4 is continuously operated to cool the storage compartment 1 to the shutdown temperature TstopAnd a target temperature TtargetBefore and after the target temperature TtargetIs raised to make the temperature of the storage chamber approach the target temperature Ttarget。
By continuously operating the compressor 4 in stages, the temperature of the storage chamber 1 can be rapidly lowered and gradually brought to the target temperature T of the storage chamber 1target。
It can be seen that the temperature in the storage compartment 1 drops from a high level (e.g. above the first threshold temperature) to the target temperature TtargetIn the vicinity, adjusting the speed of the compressor 4 according to the temperature of the storage chamber 1 may include: determining a first phase of compressor speed at a first speed amplitude modulation based; and determining a second stage of the compressor speed based on a second speed amplitude modulation, the first speed amplitude modulation being greater than the second speed amplitude modulation.
The second stage may be immediately after the first stage is completed. The first stage may exit when the temperature of the storage compartment rapidly cools to a threshold temperature or the temperature difference between the storage compartment temperature and the target temperature reaches a threshold temperature difference.
In the second stage, the speed of the compressor is finely adjusted according to the temperature of the storage chamber to bring the temperature of the storage chamber towards the target temperature T of the storage chamber 1target。
Although in the above embodiments, only one storage room is shown. It should be understood that the invention should not be limited to this first place. The above-described control method of the compressor speed can also be applied to a case where one evaporator cools two or more thermally isolated storage compartments. For example, when an air duct cooled by an evaporator can selectively supply cold air to at least two storage chambers, the speed of a compressor can be controlled according to the temperature of one storage chamber to make the temperature of the storage chamber approach a target temperature (e.g., a user-set temperature). Whether the temperature of the other storage compartment/compartments is cooled or not can be controlled by means of dampers located in the air duct. For example, when the other storage chamber/chambers reach the start-up temperature, the damper is opened to supply cold air to the other storage chamber/chambers to bring the other storage chamber/chambers to the stop-down temperature.
In an embodiment in which at least two storage compartments are cooled by one refrigeration cycle, the frequency of on-off operation of the compressor can be reduced by controlling the speed of the compressor in accordance with the temperature of one storage compartment such that the temperature of the storage compartment tends to be higher than a target temperature (e.g., a user-set temperature) for the off-temperature of the storage compartment, and controlling the cooling of the other storage compartment/compartments in an on-off manner, which is advantageous in improving energy efficiency by matching the speed of the compressor to the temperature of the storage compartment.
Although the above embodiments exemplify a single cycle refrigeration system, it should be understood that the present invention is not limited thereto, but may be applied to a refrigeration system having two or more refrigeration cycles.
Fig. 7 is a schematic view of a refrigerator 100 according to another embodiment of the present invention. The main difference from the embodiment shown in fig. 1 is that the refrigeration system of the refrigerator of the embodiment shown in fig. 7 has two refrigeration cycles, whereas the refrigeration system of the refrigerator of the embodiment shown in fig. 1 has a single refrigeration cycle.
As shown in fig. 7, the refrigerator 100 includes a first storage chamber 201 and a second storage chamber 2. The first storage chamber 201 and the second storage chamber 2 are thermally isolated. The first storage chamber 201 and the second storage chamber 2 may be adjacently disposed or separated by another storage chamber.
The refrigerator 100 includes a refrigerating system 3a to cool the first storage chamber 201 and the second storage chamber 2. In an exemplary embodiment, the refrigeration system 3a includes a compressor 4, a condenser 5, an expansion device (not shown in fig. 7), a fluid control unit 7a, and first and second evaporators 81 and 82 connected by a line carrying refrigerant. The first evaporator 81 is used to cool the first storage chamber 201, and the second evaporator 82 is used to cool the second storage chamber 2.
The refrigerant flows from the compressor 4 to the first evaporator 81 and the second evaporator 82 through the condenser 5. The arrows on the lines connecting the various components in fig. 7 schematically show the direction of flow of the refrigerant.
In an exemplary embodiment, the temperature of the second storage chamber 2 is higher than that of the first storage chamber 201. For example, the first storage chamber 201 is a freezing chamber, and the second storage chamber 2 includes a storage chamber of a non-freezing temperature region.
For example, the set temperature range of the second storage chamber 2 may be selected from any range of-4 to 12 degrees, such as 2 to 8 degrees celsius, or 2 to 12 degrees celsius, -2 to 2 degrees celsius, -4 to 4 degrees celsius, 0 to 2 degrees celsius, and the like.
As shown in fig. 7, the refrigerant output from the condenser 5 flows into the first evaporator 81 through the first refrigeration line 31. The refrigerant output from the condenser 5 flows into the second evaporator 82 through the second refrigeration line 32. The inlet ends of the first refrigeration line 32 and the second refrigeration line 32 are connected in parallel.
The fluid control unit 7a is configured to selectively deliver the refrigerant output from the condenser 5 to the first refrigeration line 31 and/or the second refrigeration line 32. The fluid control unit 7a is located downstream of the condenser 5.
A dryer 63 may be provided between the fluid control unit 7a and the condenser 5. In this embodiment, the first refrigeration line 31 and the second refrigeration line 32 are connected in parallel in the dryer 63.
The fluid control unit 7a may include a first shut-off valve 71a located in the first refrigeration line 31 to control the opening and closing of the first refrigeration line 31. When the first cutoff valve 71a opens the first refrigeration line 31, the refrigerant output from the compressor 4 may be supplied to the first evaporator 81 located downstream of the first refrigeration line 31, so that the first storage chamber 201 corresponding to the first evaporator 81 is cooled. The first cutoff valve 71a is located between the dryer 63 and the first evaporator 81.
The fluid control unit 7a may include a second shutoff valve 72a located in the second refrigeration line 32 to control the second refrigeration line 32. When the second cutoff valve 72a opens the second refrigeration line 32, the refrigerant output from the compressor 4 may be supplied to the second evaporator 82 located downstream of the second refrigeration line 32, so that the second storage chamber 2 corresponding to the second evaporator 82 is cooled. The second shut valve 72a is located between the dryer 63 and the second evaporator 82.
The refrigerator 100 may include a first fan 121 for the first storage chamber 201, and a second fan 122 for the second storage chamber 2. When the first storage chamber 201 is cooled, the first fan 121 is operated. When the second storage chamber 2 is cooled, the second fan 122 is operated.
The refrigerator 100 may include a third fan 51 disposed near the condenser 5 to improve heat dissipation efficiency of the condenser 5.
Fig. 8 is a refrigeration system 3b for a refrigerator 100 according to another embodiment of the present invention. The main difference between the refrigeration system 3b and the refrigeration system 3 shown in fig. 7 is the fluid control unit 7 b.
As shown in fig. 8, the refrigeration system 3a includes a compressor 4, a condenser 5, a dryer 6, a fluid control unit 7b, and a first evaporator 81 and a second evaporator 82 located downstream of the fluid control unit 7 b. A first expansion device 61 may be provided between the first evaporator 81 and the fluid control unit 7b, and a second expansion device 62 may be provided between the second evaporator 82 and the fluid control unit 7 b.
The refrigeration system 3b may include a first fan 121 for the first storage chamber 201, and a second fan 122 for the second storage chamber 2. The refrigeration system 3b may include a third fan 51 disposed near the condenser 5 to improve the heat dissipation efficiency of the condenser 5.
The fluid control unit 7b includes a rotary valve 71 b. The rotary valve 71b includes a first outlet communicating with the first refrigerant line 31 and a second outlet through which the second refrigerant line 32 is connected. The first refrigeration line 31 and the second refrigeration line 32 are connected in parallel by the rotary valve 71 b.
The rotary valve 71b may include a stepping motor, and the opening and closing of the first outlet and the second outlet is determined by the position of the stepping motor. By controlling the stepping motor of the rotary valve 71b, four cases of opening only the first outlet, opening only the second outlet, opening both the first outlet and the second outlet, and closing both the first outlet and the second outlet can be achieved.
When only the first outlet is opened, the refrigerant outputted from the compressor 4 may be supplied to the first evaporator 81 through the first refrigeration line 31 after passing through the condenser 5. The refrigerant evaporates in the first evaporator 81, and the first storage chamber 201 is cooled.
When only the second outlet is open, the refrigerant output from the compressor 4 may be supplied to the second evaporator 82 through the second refrigeration line 32. The refrigerant evaporates in the second evaporator 82, and the second storage chamber 2 is cooled.
When both the first outlet and the second outlet are open, the refrigerant output from the compressor 4 may be supplied to the first evaporator 81 through the first refrigeration line 31 and the second evaporator 82 through the second refrigeration line 32 in parallel. The refrigerant is evaporated in the first evaporator 81 and the second evaporator 82, respectively, and the first storage chamber 201 and the second storage chamber 2 can be cooled at the same time.
Fig. 9 is a refrigeration system 3c for the refrigerator 100 according to another embodiment of the present invention. Unlike the embodiment of fig. 8, in the embodiment shown in fig. 9, the refrigerant output from the second evaporator 82 returns to the compressor 4 via the first evaporator 81, which is advantageous for improving the refrigeration efficiency of the refrigeration system. This advantage is particularly evident when the first evaporator 81 is refrigerating for the freezer compartment and the second evaporator 82 is refrigerating for the cold storage warm section.
When the refrigerant is supplied only to the first refrigeration line 31 of the first refrigeration line 31 and the second refrigeration line 32 by controlling the fluid control unit 7b, the refrigerant is evaporated in the first evaporator 81 to cool the first storage chamber 201.
When the refrigerant is supplied only to the second refrigeration line 32 of the first refrigeration line 31 and the second refrigeration line 32, the second storage chamber 2 is cooled. Sometimes, the incompletely evaporated refrigerant discharged from the second evaporator 32 may be evaporated at the first evaporator 81 to improve the efficiency of the refrigeration system 3 c.
When the rotary valve 71b simultaneously opens the first and second refrigeration lines 31 and 32 to simultaneously supply the refrigerant to the first and second refrigeration lines 31 and 32 in parallel, the first and second storage chambers 201 and 2 are simultaneously cooled.
Referring to fig. 10 in conjunction with fig. 7 to 9, the refrigerator 100 may include a first temperature detecting unit 91 for detecting the temperature of the first storage chamber 201 and a second temperature detecting unit 92 for detecting the temperature of the second storage chamber 2. The first and second temperature detection units 91 and 92 may include at least one temperature sensor, respectively.
The refrigerator 100 may include an input unit 10 to receive a user input. The input unit 10 may receive a set temperature T of a user with respect to the first storage chamber 201set1And the set temperature T of the second storage chamber 2set1. Set temperature T of a storage roomset1Typically a user's desired temperature with respect to the storage compartment.
The refrigerator 100 includes a control unit 11. The control unit 11 is coupled to the first temperature detection unit 91, the second temperature detection unit 92 and the input unit 10 as well as to the refrigeration systems 3a, 3b, 3 c. The control unit 11 controls the operation of the compressor 4, the fluid control units 7a and 7b, the first fan 121, the second fan 122, and the third fan 51 based on the feedback from the first temperature detection unit 91 and the second temperature detection unit 92.
Control unit 11 and set temperature T of first storage chamber 201 input by userset1And the set temperature T of the second storage chamber 2set1The refrigeration systems 3a, 3b, 3c are controlled in association.
The input unit 10 is adapted to receive a set temperature T of the first storage chamber 201 input by a userset1And the set temperature T of the second storage chamber 2set1Thereby obtaining the temperatures that the user wants to obtain with respect to the first storage chamber 201 and the second storage chamber 2.
The user can set the temperature T of the first storage chamber 201 as desiredset1And the set temperature T of the second storage chamber 2set1The setting is performed. After the user sets the temperature of the first storage chamber 201 or the second storage chamber 2, if the input unit 10 does not receive a new input about the set temperature from the user, the original set temperature is maintained.
The control unit 11 may control the temperature T of the first storage chamber 201set1Determining a shutdown temperature of the first storage compartmentTstop1(hereinafter referred to as "first shutdown temperatureTstop1"), first shutdown temperatureTstop1Lower than the set temperature T of the first storage chamber 201set1. When the temperature of the first storage chamber 201 decreases to reach the first shutdown temperatureTstop1At this time, the control unit 11 determines that the refrigeration system 3a, 3b, 3c should stop cooling the first storage chamber 201.
According to the set temperature T of the second storage chamber 2set1The control unit 11 may determine the shutdown temperature of the second storage compartment 2Tstop2(hereinafter referred to as "second shutdown temperatureTstop1"), second shutdown temperatureTstop2Lower than the set temperature T of the second storage chamber 1set1. When the temperature of the second storage chamber 2 falls to reach the second stop temperatureTstop2When this happens, the control unit 11 determines that the refrigeration system 3a, 3b, 3c should stop cooling the second storage compartment 2.
It should be understood that the first shutdown temperatureTstop1And a second shutdown temperatureTstop2Can be respectively only according to the corresponding set temperature Tset1And Tset1But is not limited to such an embodiment. In other embodiments, in addition to the set temperature input by the user, other parameters such as the ambient temperature, the structural coefficients of the first and second storage compartments may be used as adjustment coefficients to determine the first shutdown temperatureTstop1And a second shutdown temperatureTstop2。
The control unit 11 may control the temperature T of the first storage chamber 201set1Determining a boot temperature of a first storage compartmentTstart1(hereinafter referred to as "first boot temperatureTstart1"), wherein, when the temperature of the first storage chamber 201 is higher than the first starting temperatureTstart1At this time, the control unit 11 confirms that the refrigeration systems 3a, 3b, 3c need to refrigerate the first storage chamber 201.
When the compressor 4 is operated and the fluid control unit 7 turns on the first refrigeration line 31, the refrigerant may be supplied to the first evaporator 81 and the first storage chamber 201 may be cooled.
In an exemplary embodiment, the control unit 11 adjusts the speed of the compressor 4 such that the temperature of the first storage chamber 201 does not decrease to the shutdown temperature T of the first storage chamber 201stop1Thereby keeping the compressor 4 running. The refrigeration system 3a, 3b, 3c cools the first storage chamber 201 such that the temperature of the first storage chamber 201 approaches the target temperature T of the first storage chamber 201target1. In this embodiment, the target temperature T of the first storage chamber 201target1Is the set temperature T of the first storage chamber 201set1。
The speed of the compressor 4 may be adjusted according to the temperature of the first storage chamber 201 to bring the temperature of the first storage chamber 201 toward the set temperature T of the first storage chamber 201set1. Since the target temperature of the first storage chamber 201 is higher than the first shutdown temperatureTstop1It is expected that the compressor 4 is kept operating at a low speed for a long time. The temperature of the first storage chamber 201 is made to approach the set temperature T of the first storage chamber 201 by adjusting the speed of the compressor 4set1The temperature of the first storage chamber 201 can be maintained at a temperature desired by a user with high accuracy.
By adjusting the speed of the compressor 4 in real time based on the temperature of the first storage chamber 201 obtained by the first temperature detection unit 91, it is advantageous to adjust the speed of the compressor 4 to a set temperature T that is substantially maintained at the first storage chamber 201 with the first storage chamber 201 after the operation of the compressor 4 for a period of timeset1The degree of matching.
According toThe speed of the temperature-adjusting compressor 4 of the first storage chamber 201 may include: the speed of the compressor 4 is reduced to bring the temperature of the first storage chamber 201 from the set temperature T of the first storage chamber 201set1And shutdown temperature of the first storage chamber 201Tstop1Towards the set temperature T of the first storage chamber 201set1And (4) rising. Thereby, the compressor 4 maintains the temperature of the first storage chamber 201 at the set temperature Tset1It is possible to operate at a speed matched to the required refrigeration capacity.
The control unit 11 may be based on the set temperature T of the second storage chamber 2set1Determining the starting temperature of the second storage compartment 2Tstart2(hereinafter referred to as "second boot temperatureTstart2"). Wherein, when the temperature of the second storage chamber 2 is higher than the second starting temperatureTstart2At this time, the control unit 11 confirms that the refrigeration system 3a, 3b, 3c needs to refrigerate the second storage chamber 2.
When the compressor 4 is operated and the fluid control units 7a, 7b turn on the second refrigeration line 32, the refrigerant may be supplied to the second evaporator 82 and the second storage chamber 2 may be cooled. In an embodiment of the invention, the control unit 11 is operated at a second shutdown temperatureTstop2Cooling the second storage chamber 2 as a target temperature of the second storage chamber 2 when the temperature of the second storage chamber 2 is lowered to a second stop temperatureTstop2When this occurs, the cooling of the second storage chamber 2 is stopped.
When only the second storage compartment 2 has a cooling demand, the compressor 4 may be operated at a predetermined speed or in accordance with a predetermined speed pattern to bring the second storage compartment 2 to the second shutdown temperatureTstop2. For example, when the compressor 4 cools only the second storage chamber 2, the speed of the compressor 4 during operation may not be adjusted in real time based on the temperature of the second storage chamber 2 obtained by the second temperature detecting unit 92.
When both the first storage chamber 201 and the second storage chamber 2 have cooling demands, the first storage chamber 201 and the second storage chamber 2 may be cooled simultaneously. The first storage chamber 201 and the second storage chamber 2 are simultaneously cooled by supplying the refrigerant to the first evaporator 81 and the second evaporator 82.
Fig. 11 shows a flow chart of a method for the refrigerator 100 according to one embodiment of the present invention.
As shown in fig. 11, in step S51, the set temperature T of the first storage chamber 201 input by the user is receivedset1And the set temperature of the second storage chamber 2Tset1。
In step S52, according to the set temperature T of the first storage chamber 201set1Determining a first shutdown temperature Tstop1According to the set temperature of the second storage chamberTset1Determining a second shutdown temperature Tstop2。
In the simultaneous cooling mode in which the compressor 4 is operated to simultaneously cool the first storage chamber 201 and the second storage chamber 2, the speed of the compressor 4 is adjusted such that the temperature of the first storage chamber 201 is equal to or tends to the set temperature T of the first storage chamber 201 in step S53set1While keeping the compressor 4 running; and at a second shutdown temperatureTstop2Cooling the second storage chamber 2 as a target temperature of the second storage chamber 2 when the temperature of the second storage chamber 2 is lowered to a second stop temperatureTstop2When this occurs, the cooling of the second storage chamber 2 is stopped. Since the compressor 4 only needs to refrigerate the second storage chamber 2 for a part of the time, it is more advantageous for the refrigeration system 3a, 3b, 3c to accurately control the temperature of the first storage chamber 201 and the speed of the compressor 4.
In the simultaneous cooling mode for simultaneously cooling the first storage chamber 201 and the second storage chamber 2, the control unit 11 may determine the speed of the compressor 4 based on the temperature of the first storage chamber 201 to bring the temperature of the first storage chamber 201 toward the target temperature of the first storage chamber 201.
The control unit 11 adjusting the speed of the compressor 4 in association with the temperature of the first storage chamber 201 may include: in the simultaneous cooling mode for simultaneously cooling the first storage chamber 201 and the second storage chamber 2, at the temperature of the first storage chamber 201 and the set temperature T of the first storage chamber 201set1The temperature difference therebetween to adjust the speed of the compressor 4 such that the temperature of the first storage chamber 201 approaches the set temperature T of the first storage chamber 201set1。
In one embodiment, the temperature of the second storage chamber 2 may not be adjusted as the speed of the compressor 4 is adjusted while simultaneously cooling the first storage chamber 201 and the second storage chamber 2And (4) parameters. That is, when the first storage chamber 201 and the second storage chamber 2 are cooled simultaneously, the speed of the compressor 4 is adjusted based on the first storage chamber 201 temperature of the first storage chamber 201 and the second storage chamber 2 temperature. Thus, the speed of the compressor 4 is adjusted according to the temperature of the first storage chamber 201 regardless of whether the second storage chamber 2 is being cooled. That is, the control unit 11 adjusts the speed of the compressor 4 depending on the first storage chamber 201 of the temperature of the first storage chamber 201 and the temperature of the second storage chamber 2 to maintain the temperature of the first storage chamber 201 at the user-set temperature toward the set temperature T, regardless of whether the second storage chamber 2 is cooled at the same time or notset。
When the compressor speed is adjusted according to the temperature of the first storage chamber 201, the compressor speed may be determined with reference to a method of adjusting the compressor speed according to the temperature of the storage chamber 1 in the single circulation refrigeration system 3 embodiment. Therefore, the description thereof is omitted.
If the target temperature T of the first storage chamber 1target1Lower than the set temperature T of the second storage chamber 2set2The resistance to supply of the refrigerant to the second evaporator 82 is larger than the resistance to supply of the refrigerant to the first evaporator 81. When the speed of the compressor 4 is adjusted at the temperature of the first storage chamber 1, in order to ensure that the second storage chamber 2 can also be cooled in time, when the first storage chamber 201 and the second storage chamber 2 are cooled simultaneously, supplying the refrigerant to the first refrigeration line 31 and the second refrigeration line 32 connected in parallel may include preferentially supplying the refrigerant to the second refrigeration pipe 32 of the first refrigeration line 31 and the second refrigeration line 32.
In an exemplary embodiment, the second refrigeration line 32 may preferentially receive refrigerant at the branch of the first refrigeration line 31 and the second refrigeration line 32. For example, when the inlets of the first refrigeration line 31 and the second refrigeration line 32 both extend into the drying cavity of the dryer, the minimum refrigerant accumulation height in the drying cavity required by the inlet of the second refrigeration line 32 to obtain the refrigerant is lower than the minimum refrigerant accumulation height in the drying cavity required by the inlet of the first refrigeration line 31 to obtain the refrigerant.
Fig. 12 shows a flow chart of a method for the refrigerator 100 according to one embodiment of the present invention. As shown in fig. 12, in step S71, the first temperature detection unit 91 detects the temperature of the first storage chamber 201, and the second temperature detection unit 92 detects the temperature of the second storage chamber 2.
In step S72, the control unit 11 determines whether or not the first storage chamber 201 has a cooling request based on the information of the first temperature detection unit 91.
For example, when the temperature of the first storage chamber 201 reaches the first shutdown temperature Tstop1It is determined that the first storage chamber 201 has no cooling request. When the temperature T1 of the first storage chamber 201 reaches the first start-up temperature Tstart1When it is determined that the first storage chamber 201 has a cooling request. When the temperature of the first storage chamber 201 is higher than the first shutdown temperature Tstop1But lower than the first boot temperature Tstart1Meanwhile, if the control unit 11 has judged that the first storage room 201 has a cooling request last time, it is determined that the first storage room 201 has a cooling request, and if the control unit 11 has judged that the first storage room 201 has no cooling request last time, it is determined that the first storage room 201 has no cooling request.
If it is determined in step S72 that the first storage chamber 201 has a cooling request, the compressor 4 is operated in the first speed mode in step S73. Wherein the first speed mode is a mode in which the speed of the compressor 4 is adjusted according to the temperature of the first storage chamber 201. Specifically, the speed of the compressor 4 may be adjusted according to the temperature of the first storage chamber 201 so that the temperature of the first storage chamber 201 may be at the first start-up temperature T for a long timestart1And a first shutdown temperature Tstop1Between and towards the set temperature T of the first storage chamber 201set1E.g. the set temperature T of the first storage chamber 201set1Micro-amplitude fluctuation without reaching the first shutdown temperature Tstop1。
The first and second fans 121 and 122 are operated while both the first and second refrigeration circuits 31 and 32 are opened to simultaneously cool the first and second storage compartments 201 and 2. The speeds of the first and second fans 121 and 122 are associated with the speed of the compressor 4, and thus with the temperature of the first storage chamber 201.
If it is confirmed in step S72 that the first storage chamber 201 does not require cooling, it is determined in step S74 whether the second storage chamber 2 requires cooling.
For example, when the temperature of the second storage chamber 2 reaches the second stop temperature Tstop2It is determined that the second storage chamber 2 has no cooling request. When the temperature of the second storage chamber 2 reaches the second starting temperature Tstart2When it is determined that the second storage room 2 has a cooling request. When the temperature T2 of the second storage chamber 2 is higher than the second stop temperature Tstop2But lower than the second start-up temperature Tstart2Meanwhile, if the control unit 11 has judged that the second storage room 2 has a cooling request last time, it is determined that the second storage room 2 has a cooling request, and if the control unit 11 has judged that the second storage room 2 has no cooling request last time, it is determined that the second storage room 2 has no cooling request.
If the second storage room 2 does not require cooling either, the compressor 4 is not operated or stopped in step S75. If it is judged in step S74 that the second storage chamber 2 requires cooling, the compressor 4 is operated in the second speed mode in step S76. Wherein the second speed mode is that the speed of the compressor 4 is determined in a manner independent of the temperature of the first storage chamber 201. In the second speed mode, the speed of the compressor 4 may be fixed or may be set according to the set temperature T of the second storage chamber 2set1Ambient temperature and/or the temperature of the second storage compartment 4.
Fig. 13 is a schematic flow chart of a method for the refrigerator 100 according to another embodiment of the present invention. As shown in fig. 13, in step S91, the first temperature detection unit 91 detects the temperature of the first storage chamber 201, and the second temperature detection unit 92 detects the temperature of the second storage chamber 2.
In step S92, it is determined whether or not the first storage room 201 has a cooling request.
If it is determined in the step S92 that the first storage room 201 has a cooling request, it is determined in the step S93 whether the second storage room 2 has a cooling request.
If it is confirmed in step S93 that the second storage chamber 2 has no cooling request, the compressor 4 is operated in the first speed mode. The first speed mode is a mode in which the speed of the compressor 4 is adjusted according to the temperature of the first storage chamber 201. In particular toIn other words, the speed of the compressor 4 can be adjusted according to the temperature of the first storage chamber 201 so that the temperature of the first storage chamber 201 can be at the first start-up temperature T for a long timestart1And a first shutdown temperature Tstop1Maintain or surround the set temperature T of the first storage chamber 201set1Fluctuating.
If it is confirmed in step S93 that the second storage chamber 2 also requires cooling, the compressor 4 is operated in the third speed mode. The third speed mode may be a variable or fixed speed increment based on the first speed mode, which is determined according to the temperature of the first storage chamber 201 and is suitable for maintaining the temperature of the first storage chamber 201 at or towards the set temperature T of the first storage chamber 201set1And the calculated compressor speed. The speed increment may be by a predetermined fixed speed value or a variable speed value which is variable depending on the ambient temperature and/or the temperature of the second storage compartment 2. Since the first storage chamber 201 and the second storage chamber 2 are simultaneously cooled, the load of the compressor 1 is increased, and the speed is increased on the basis of the first speed mode, so that the second storage chamber 2 can be cooled as soon as possible, and the set temperature T of the first storage chamber 201 can be maintained or approached to the first storage chamber 201set1The reliability of (2).
The method of adjusting the speed of the compressor according to the temperature of the first storage chamber 201 in the first speed mode may refer to the method of adjusting the speed of the compressor according to the temperature of the storage chamber 1 in the single circulation refrigeration system 3 embodiment. Therefore, the description thereof is omitted.
If it is confirmed that the first storage room 201 has no cooling request in step S92, it is judged whether the second storage room 2 has a cooling request in step S96. If it is confirmed in step S96 that the second storage chamber 2 has a cooling request, the compressor 4 is operated in the second speed mode. In the second speed mode, the speed of the compressor 4 may be fixed or may be set according to the set temperature T of the second storage chamber 2set1Ambient temperature and/or the temperature of the second storage compartment 4. The objective of the operation of the compressor 4 is to cool the second storage chamber 2 to the second shutdown temperature Tstop2And then stops cooling the second storage chamber 2.
If it is confirmed in step S96 that the second storage chamber 2 has no cooling request either, the compressor 4 stops operating or remains in a non-operating state.
After step S95, S94, or S96, return to step S91, and so on.
Fig. 14 is a schematic view of the compressor speed, the temperature of the first storage chamber 201, and the temperature of the second storage chamber 2 obtained by performing the method for the refrigerator shown in fig. 12.
The second storage chamber 2 is intermittently cooled in an on-off manner. Specifically, when the temperature of the second storage chamber 2 rises to the second startup temperature Tstart2When the second storage chamber 2 is cooled, the second storage chamber 2 reaches the second stop temperature T stop2, cooling of the second storage chamber 2 is stopped.
As shown in FIG. 14, the temperature T2 of the second storage compartment is at the second start-up temperature Tstart2And a second shutdown temperature Tstop2Fluctuate up and down. In the temperature drop phase, the second storage chamber 2 is cooled.
At the set temperature T of the first storage chamber 201set1As the target temperature cools the first storage chamber 201, the compressor 4 may be kept operating because of the refrigeration demand of the first storage chamber 201.
In cooling the first storage chamber 201 alone or simultaneously with the first and second storage chambers 201 and 2, the temperature of the first storage chamber 201 is used to adjust the speed of the compressor 4 so that the temperature of the first storage chamber 201 approaches the target temperature of the first storage chamber 201. In this example, the temperature of the first storage chamber 201 fluctuates in a narrower range around the target temperature of the first storage chamber 201 than the fluctuation range of the temperature of the second storage chamber 2.
As shown in fig. 14, since the first storage chamber 201 has a cooling demand all the time, the compressor 4 keeps operating all the time.
The average temperature of the first storage chamber 201 during the current time interval is used to adjust the speed of the compressor 4. The speed of the compressor 4 is adjusted by the average temperature of the first storage chamber 201 in the current time interval, and although the speed adjustment of the compressor 4 is delayed, the problem that the speed of the compressor 4 is changed too much and/or frequently to cause noise which makes a user uncomfortable can be avoided.
In the exemplary embodiment, the average temperature of the 20 measured temperatures of the first storage chamber 201, including the current measured temperature, is used as the adjustment factor for the speed of the compressor 4.
According to the average temperature of the first storage chamber 201 in the current time interval and the target temperature T of the first storage chamber 201target1I.e. the set temperature Tset1To determine the speed of the compressor 4.
The speed of the compressor may be controlled by the base speed S0 and according to the average temperature of the first storage chamber 201 during the current time interval and the set temperature T of the first storage chamber 201set1The temperature difference therebetween is determined by the sum of the adjustment speeds determined. When the temperature difference is larger than zero, the adjusting speed is a positive value, otherwise, the adjusting speed is a negative value.
The base speed S0 may be based on the ambient temperature and the set temperature T of the first storage chamber 201set1And is determined.
As shown in fig. 14, as the temperature of the first storage chamber 201 increases to the set temperature T of the first storage chamber 201set1In the above, the speed of the compressor 4 is increased (as in the stages A0-A, B-C, D-E) to bring the temperature T1 of the first storage chamber 201 from above the set temperature T of the first storage chamber 201set1The position of (2) is lowered. As the temperature of the first storage chamber 201 decreases to the set temperature T of the first storage chamber 201set1Next, the speed of the compressor 4 is reduced (e.g., stages A-B, C-D) to bring the temperature T1 of the first storage chamber 201 from below the set temperature T of the first storage chamber 201set1Is raised.
The speed increasing stage and the speed decreasing stage of the compressor 4 are alternately performed such that the temperature T1 of the first storage chamber 201 is around the set temperature Tset1The micro-amplitude fluctuates, whereby the compressor 4 is continuously operated.
In the exemplary embodiment, each speed ramp-up phase of compressor 4 (e.g., phases A0-A, B-C, and D-E) includes at least two consecutive speed increase sub-phases.
Each speed-down stage (e.g., periods a-B, periods C-D) of the compressor 4 includes at least two successive speed-down sub-stages.
The speed differences between adjacent speed sub-phases may be equal.
Gradually adjusting the speed of the compressor 4 through a plurality of sub-stages facilitates more precise adjustment of the speed of the compressor 4, thereby reducing the temperature of the first storage chamber 201 from breaching the first startup temperature Tstart1And a first shutdown temperature Tstop1The temperature T1 of the first storage chamber 201 is made to surround the set temperature T of the first storage chamber 201set1Small fluctuation is maintained even at the set temperature T of the first storage chamber 201set1。
Although the refrigerator and the method for the refrigerator have been described above based on specific shapes and orientations with reference to the accompanying drawings, those skilled in the art will appreciate that modifications may be made without departing from the principles and spirit of the present disclosure. In other words, although exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

Claims (27)

1. A method for a refrigerator, comprising:
operating a compressor (4) to cool a storage compartment (1, 201) and adjusting the speed of the compressor in dependence on the temperature of the storage compartment such that the temperature of the storage compartment tends to be above a shutdown temperature (T) of the storage compartmentstop，Tstop1) Target temperature (T) oftarget，Ttarget1)。
2. Method according to claim 1, characterized in that the target temperature is based on a user-set temperature (T) of the storage compartmentset，Tset1) And (4) determining.
3. The method of claim 1 or 2, wherein adjusting the speed of the compressor toward the target temperature based on the temperature of the storage compartment comprises: a cool-down stage of increasing the compressor speed to bring the temperature of the storage chamber closer from above the target temperature toward the target temperature, and a warm-up stage of decreasing the compressor speed to bring the temperature of the storage chamber closer from below the target temperature toward the target temperature.
4. The method of any preceding claim, wherein adjusting the speed of the compressor towards the target temperature in dependence on the temperature of the storage chamber comprises: at least in one stage, as the temperature of the storage chamber decreases towards the target temperature, the speed of the compressor decreases in successive speed steps (S1, S2, …. Sn-1, Sn) as the temperature of the storage chamber decreases.
5. The method of any preceding claim, wherein adjusting the speed of the compressor in dependence on the temperature of the storage chamber comprises: adjusting a speed of the compressor according to a temperature difference between the temperature of the storage chamber and the target temperature.
6. The method of claim 5, wherein adjusting the speed of the compressor based on the temperature difference between the temperature of the storage chamber and the target temperature comprises: adjusting a speed of the compressor based on an average temperature of the storage chamber or a temperature difference between a current instantaneous temperature of the storage chamber and the target temperature within a current time interval.
7. The method of any preceding claim, wherein adjusting the speed of the compressor in dependence on the temperature of the storage chamber comprises: the compressor speed is determined based on a base speed (S0) and an adjusted speed (Sv) determined according to the temperature of the storage chamber.
8. The method of claim 7, wherein the adjustment speed is determined based on a temperature difference between a temperature of the storage compartment and the target temperature.
9. The method of claim 7 or 8, wherein the base speed is variable based on an ambient temperature and/or the target temperature.
10. The method as claimed in any one of claims 7 to 9, wherein adjusting the speed of the compressor based on the temperature difference between the temperature of the storage chamber and the target temperature comprises determining the adjustment speed based on the temperature difference between the temperature of the storage chamber and the target temperature and a speed amplitude modulation.
11. The method of claim 10, wherein the speed amplitude modulation is variable in relation to a temperature of the storage compartment.
12. The method of claim 10 or 11, wherein the adjustment speed is determined by a first speed amplitude modulation when the temperature of the storage compartment is greater than a first threshold temperature, and by a second speed amplitude modulation when the temperature of the storage compartment is less than the first threshold temperature; or when the temperature difference between the temperature of the storage compartment and the target temperature is greater than a threshold temperature difference, determining the adjustment speed in a first speed amplitude modulation, and when the temperature difference between the temperature of the storage compartment and the target temperature is less than a threshold temperature difference, determining the adjustment speed in a second speed amplitude modulation; wherein the first speed amplitude modulation is greater than the second speed amplitude modulation.
13. The method of claim 12, wherein said first threshold temperature is equal to or greater than a starting temperature of said storage compartment, and said threshold temperature difference is greater than or equal to a difference between said starting temperature of said storage compartment and a target temperature.
14. The method of any preceding claim, wherein adjusting the speed of the compressor in dependence on the temperature of the and storage chamber comprises: a stage of adjusting the compressor speed based on a first speed amplitude modulation; and a phase of modulating the speed of the compressor based on the second speed amplitude; wherein the first speed amplitude modulation is greater than the second speed amplitude modulation.
15. The method of claim 14, wherein the first phase is after a defrosting procedure and the second phase is after completion of the first phase.
16. The method as claimed in any one of the preceding claims, wherein after the defrosting process is completed, the compressor is operated to cool the storage compartment to between the shutdown temperature and a target temperature and then rises toward the target temperature.
17. The method as claimed in claim 16, wherein a defrosting recovery mode is entered after the defrosting process is completed, in which the compressor is operated to cool the storage compartment to a second threshold temperature between a start-up temperature and the stop temperature of the storage compartment, and after the temperature of the storage compartment reaches the second threshold temperature, a normal cooling mode is entered from the defrosting recovery mode, in which a speed of the compressor is adjusted according to the temperature of the storage compartment so that the temperature of the storage compartment approaches the target temperature.
18. Method according to any of the preceding claims, characterized in that, while the compressor is running to cool simultaneously the storage compartment (201) and a second storage compartment (2) thermally isolated from it, the speed of the compressor is adjusted in dependence of the temperature of the storage compartment to bring the temperature of the storage compartment towards the target temperature, and at the shutdown temperature (T) of the second storage compartmentstop2) Cooling the second storage chamber as a target temperature of the second storage chamber to stop cooling the second storage chamber when the temperature of the second storage chamber drops to a shutdown temperature of the second storage chamber.
19. Method according to claim 18, characterized in that when the compressor is operated to cool the storage compartment and the second storage compartment simultaneously, refrigerant is supplied to a first refrigeration line (31) connected to the inlet of a first evaporator (81) for cooling the storage compartment and a second refrigeration line (32) connected to the inlet of a second evaporator (32) for cooling the second storage compartment in parallel.
20. A method for a refrigerator, comprising:
operating a compressor (4) to cool a storage compartment (1, 201) and based on the temperature of the storage compartment and a target temperature (T)target，Ttarget1) The temperature difference therebetween adjusts the speed of the compressor, wherein the target temperature (T)target，Ttarget1) Above the shutdown temperature (T) of the storage compartmentstop，Tstop1)。
21. The method of claim 20, wherein adjusting the speed of the compressor based on the temperature difference between the temperature of the storage chamber and the target temperature comprises: adjusting a speed of the compressor based on a temperature difference between an average temperature of the storage chamber and the target temperature within a current time interval.
22. A method for a refrigerator, comprising:
the compressor (4) is operated to cool a storage compartment (1, 201) and the speed of the compressor is determined from a base speed and a regulation speed regulated in accordance with the temperature of the storage compartment.
23. Method according to claim 22, characterized in that the speed of regulation is based on the temperature of the storage compartment and the set temperature (T) of the storage compartmentset，Tset1) The temperature difference therebetween.
24. A method according to claim 22 or 23, wherein the base speed is determined from the set temperature and/or ambient temperature.
25. A method for a refrigerator, comprising:
operating a compressor (4) to cool a storage compartment (1, 201), adjusting the speed of the compressor in accordance with the temperature of the storage compartment, wherein the speed of the compressor decreases in successive speed steps (S1, S2, …. Sn-1, Sn) as the temperature of the storage compartment decreases.
26. Method according to claim 25, characterized in that the temperature of the storage compartment decreases closer to the set temperature (T) of the storage compartmentset，Tset1) The longer the duration of the speed step(s) is.
27. A refrigerator adapted to perform the method of any preceding claim.
CN201910862962.0A 2019-09-12 2019-09-12 Refrigerator and method for refrigerator Pending CN112484367A (en)

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EP4137763A1 (en) 2021-08-19 2023-02-22 BSH Hausgeräte GmbH Refrigerator and method therefor

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CN112484390A (en) * 2020-11-26 2021-03-12 珠海格力电器股份有限公司 Refrigerator temperature control method and device and refrigerator
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