CN115218602A - Method and device for controlling temperature of refrigerator, refrigerator and storage medium - Google Patents
Method and device for controlling temperature of refrigerator, refrigerator and storage medium Download PDFInfo
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- CN115218602A CN115218602A CN202210736781.5A CN202210736781A CN115218602A CN 115218602 A CN115218602 A CN 115218602A CN 202210736781 A CN202210736781 A CN 202210736781A CN 115218602 A CN115218602 A CN 115218602A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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Abstract
The application relates to the technical field of refrigeration equipment, and discloses a method for controlling the temperature of a refrigerator, wherein the refrigerator comprises a Stirling refrigerator, and the method comprises the following steps: detecting the temperature of a cold head of the Stirling refrigerator; detecting the current temperature in the box; and under the condition that the current temperature in the refrigerator is greater than a first temperature threshold value, controlling the operating power of the Stirling refrigerator according to the temperature of the cold head. Under the condition that the current temperature in the box is greater than the first temperature threshold value, the difference between the temperature in the box and the target temperature is large, and the Stirling refrigerator possibly has the problem of cylinder collision. And controlling the operating power of the Stirling refrigerator according to the temperature of the cold head, so that the operating power is matched with the temperature of the cold head. The running power of the Stirling refrigerator is controlled according to the cold head temperature, so that the possibility of cylinder collision of the Stirling refrigerator is reduced under the condition that the difference between the temperature in the refrigerator and the target temperature is large. The application also discloses a device for controlling the temperature of the refrigerator, the refrigerator and a storage medium.
Description
Technical Field
The present application relates to the technical field of refrigeration equipment, and for example, to a method and an apparatus for controlling a temperature of a refrigerator, and a storage medium.
Background
At present, an ultra-low temperature refrigerator has a low temperature in the refrigerator (the temperature range is-86 ℃ to-20 ℃), and is used for storing vaccines, biological samples, heat-sensitive medicines and the like. Because the traditional refrigerator adopting the compressor has the problems of high noise, low refrigeration efficiency and high power consumption, the ultralow temperature refrigerator usually adopts the Stirling refrigerator to replace the compressor to realize refrigeration.
In the related art, a method for controlling a refrigerator includes: acquiring a starting signal of a compression refrigeration system; acquiring the compartment temperature of a storage compartment and the evaporator temperature of a compression refrigeration system; judging whether the difference between the compartment temperature and the evaporator temperature is greater than a set temperature difference or not and the compartment temperature is less than the set temperature; if yes, the Stirling refrigerator is driven to operate.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the method can realize the adjustment of the temperature in the refrigerator. However, in a state where the cabinet door is opened during the start-up and low-temperature operation of the stirling refrigerator, the temperature in the cabinet greatly differs from the target temperature. When the power of the Stirling refrigerator is controlled by the temperature in the refrigerator, the power of the Stirling refrigerator can be rapidly increased to accelerate the temperature reduction. The change of the cold head temperature is small, so that the cold head temperature is not matched with the power of the Stirling refrigerator, and the problem of cylinder collision can occur.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling the temperature of a refrigerator, the refrigerator and a storage medium, so as to reduce the possibility of cylinder collision of a Stirling refrigerator under the condition that the difference between the temperature in the refrigerator and a target temperature is large.
In some embodiments, the refrigerator comprises a stirling cooler, and the method comprises: detecting the temperature of a cold head of the Stirling refrigerator; detecting the current temperature in the box; and under the condition that the current temperature in the refrigerator is greater than a first temperature threshold value, controlling the operating power of the Stirling refrigerator according to the temperature of the cold head.
Optionally, controlling the operating power of the stirling cooler in dependence on the cold head temperature comprises: obtaining a voltage threshold of the Stirling refrigerator; under the condition that the input voltage is smaller than the voltage threshold, the input voltage of the Stirling refrigerator is adjusted according to the temperature of the cold head; and controlling the Stirling refrigerator to operate at the input voltage for a set period of time under the condition that the input voltage is greater than or equal to the voltage threshold value.
Optionally, obtaining a voltage threshold for the stirling cooler comprises: determining a first temperature difference value between the cold head temperature and a target temperature; and determining a voltage threshold corresponding to the first temperature difference according to the first temperature difference.
Optionally, adjusting the input voltage of the stirling cooler according to the cold head temperature comprises: determining an adjustment voltage corresponding to the first temperature difference value according to the first temperature difference value; determining a sum of the input voltage and the adjustment voltage as a first target voltage; the input voltage of the stirling cooler is regulated to a first target voltage.
Optionally, determining, according to the first temperature difference, an adjustment voltage corresponding to the first temperature difference, includes: determining a second temperature difference value between the current temperature in the box and the previous temperature in the box; determining an adjustment voltage corresponding to the first temperature difference value according to a first preset corresponding relation under the condition that the second temperature difference value is smaller than or equal to a second temperature threshold value; and under the condition that the second temperature difference is larger than the second temperature threshold, determining the adjusting voltage corresponding to the first temperature difference according to a second preset corresponding relation.
Optionally, after detecting the current in-box temperature, the method further includes: and under the condition that the current temperature in the refrigerator is less than or equal to the first temperature threshold, controlling the operating power of the Stirling refrigerator according to the current temperature in the refrigerator.
Optionally, controlling the operating power of the stirling cooler in dependence on the current in-cabinet temperature comprises: determining a third temperature difference value between the current temperature in the box and the target temperature; determining a second target voltage through proportional integral derivative operation according to the third temperature difference; the input voltage of the stirling cooler is regulated to a second target voltage.
In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to, upon execution of the program instructions, perform the above-described method for controlling the temperature of a refrigerator.
In some embodiments, the refrigerator includes the above-described apparatus for controlling a temperature of the refrigerator.
In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for controlling a temperature of a refrigerator.
The method and the device for controlling the temperature of the refrigerator, the refrigerator and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
the cold head temperature of the Stirling refrigerator is detected. And detecting the current temperature in the box, and determining the degree of the difference between the temperature in the box and the target temperature. Under the condition that the current temperature in the box is greater than the first temperature threshold value, the difference between the temperature in the box and the target temperature is large, and the Stirling refrigerator possibly has the problem of cylinder collision. And controlling the operating power of the Stirling refrigerator according to the temperature of the cold head, so that the operating power is matched with the temperature of the cold head. The running power of the Stirling refrigerator is controlled according to the cold head temperature, so that the possibility of cylinder collision of the Stirling refrigerator is reduced under the condition that the difference between the temperature in the refrigerator and the target temperature is large.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of a refrigerator provided in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a method for controlling a temperature of a refrigerator according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another method for controlling the temperature of a refrigerator provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for controlling the temperature of a refrigerator provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another method for controlling the temperature of a refrigerator provided by an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of another method for controlling the temperature of a refrigerator provided by an embodiment of the present disclosure;
fig. 7 is a schematic diagram of an apparatus for controlling a temperature of a refrigerator according to an embodiment of the present disclosure.
Reference numerals:
11: a housing; 12: a stirling cooler; 13: a cold head temperature sensor; 14: an in-cabinet temperature sensor; 121: cooling the head; 41: a processor; 42: a memory; 43: a communication interface; 44: a bus.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
At present, an ultra-low temperature refrigerator has lower temperature in the refrigerator (the temperature range is-86 ℃ to-20 ℃) and is used for storing vaccines, biological samples, heat-sensitive medicines and the like. Because the traditional refrigerator adopting the compressor has the problems of high noise, low refrigeration efficiency and high power consumption, the ultralow temperature refrigerator usually adopts the Stirling refrigerator to replace the compressor to realize refrigeration.
As shown in fig. 1, the refrigerator includes a housing 11, a stirling cooler 12, a cold head temperature sensor 13, and an in-box temperature sensor 14. A storage space is provided in the case 11 for refrigerating the stored goods. The stirling cooler 12 is disposed in the housing 11 and has a cold head 121, and the cold head 121 is located in the storage space. The cold head temperature sensor 13 is disposed on the cold head 121 and is configured to detect a temperature of the cold head. The in-box temperature sensor 14 is provided in the storage space for detecting the in-box temperature. Because the refrigerator is in the state of opening the refrigerator door in starting and low-temperature work, the difference between the temperature in the refrigerator and the target temperature set by a user is large. When the input voltage of the stirling cooler 12 is controlled only based on the in-tank temperature, the problem of cylinder collision occurs because the power of the stirling cooler 12 is loaded too quickly and the change in cold head temperature is small.
Referring to fig. 2, an embodiment of the present disclosure provides a method for controlling a temperature of a refrigerator, including:
and S210, detecting the cold head temperature of the Stirling refrigerator by the refrigerator.
And S220, detecting the current temperature in the refrigerator by the refrigerator.
And S230, controlling the running power of the Stirling refrigerator according to the cold head temperature by the refrigerator under the condition that the current temperature in the refrigerator is greater than the first temperature threshold value.
By adopting the method for controlling the temperature of the refrigerator provided by the embodiment of the disclosure, the temperature of the cold head of the Stirling refrigerator is detected. And detecting the current temperature in the box, and determining the difference degree between the temperature in the box and the target temperature. Under the condition that the current temperature in the box is greater than the first temperature threshold value, the difference between the temperature in the box and the target temperature is large, and the Stirling refrigerator possibly has the problem of cylinder collision. And controlling the operating power of the Stirling refrigerator according to the temperature of the cold head, so that the operating power is matched with the temperature of the cold head. The running power of the Stirling refrigerator is controlled according to the cold head temperature, so that the possibility of cylinder collision of the Stirling refrigerator is reduced under the condition that the difference between the temperature in the refrigerator and the target temperature is large.
The first temperature threshold is the sum of the target temperature and the set temperature. The target temperature is a temperature in the refrigerator set by a user and expected to be stably operated.
Optionally, the set temperature is in a range of [1,5] ° c. Preferably, the set temperature is 2 ℃, 3 ℃ or 4 ℃. Therefore, when the value of the set temperature is in the range, the rapid cooling process and the stable operation process of the refrigerator can be distinguished, so that the possibility of cylinder collision of the Stirling refrigerator is reduced, and the accuracy of temperature adjustment in the refrigerator is improved.
Referring to fig. 3, another method for controlling the temperature of a refrigerator according to an embodiment of the present disclosure includes:
and S210, detecting the cold head temperature of the Stirling refrigerator by the refrigerator.
And S220, detecting the current temperature in the refrigerator by the refrigerator.
And S230, controlling the running power of the Stirling refrigerator according to the cold head temperature by the refrigerator under the condition that the current temperature in the refrigerator is greater than the first temperature threshold value.
And S240, controlling the running power of the Stirling refrigerator according to the current temperature in the refrigerator under the condition that the current temperature in the refrigerator is less than or equal to the first temperature threshold.
By adopting the method for controlling the temperature of the refrigerator provided by the embodiment of the disclosure, the difference between the current temperature in the refrigerator and the target temperature is large under the state that the door of the refrigerator is opened in the starting and low-temperature work of the refrigerator. If the operating power of the Stirling refrigerator is controlled at the current temperature in the refrigerator, the operating power is kept at the maximum value, resulting in cylinder collision of the Stirling refrigerator. At the moment, the operating power of the Stirling refrigerator is adjusted according to the cold head temperature, so that the power of the Stirling refrigerator is gradually increased to be matched with the cold head temperature, and the possibility of cylinder collision of the Stirling refrigerator is reduced. In the stable operation process of the refrigerator, the difference between the current temperature in the refrigerator and the target temperature is small. If the operating power of the Stirling refrigerator is controlled by the cold head temperature, the temperature in the refrigerator cannot reach the target temperature due to the deviation between the cold head temperature and the temperature in the refrigerator. At the moment, the operating power of the Stirling refrigerator is adjusted according to the current temperature in the refrigerator, so that the current temperature in the refrigerator gradually reaches and is stabilized at the target temperature, and the accuracy of temperature adjustment in the refrigerator is improved.
Referring to fig. 4, another method for controlling a temperature of a refrigerator according to an embodiment of the present disclosure includes:
and S210, detecting the cold head temperature of the Stirling refrigerator by the refrigerator.
And S220, detecting the current temperature in the refrigerator by the refrigerator.
And S231, when the current temperature in the refrigerator is greater than the first temperature threshold value, the refrigerator obtains the voltage threshold value of the Stirling refrigerator.
And S232, under the condition that the input voltage is smaller than the voltage threshold, the refrigerator adjusts the input voltage of the Stirling refrigerator according to the cold head temperature.
And S233, in the case that the input voltage is greater than or equal to the voltage threshold, controlling the Stirling refrigerator to operate at the input voltage for a set time period.
By adopting the method for controlling the temperature of the refrigerator provided by the embodiment of the disclosure, when the operating power of the Stirling refrigerator is controlled according to the temperature of the cold head, the operating power is controlled in a mode of controlling the input voltage, and whether the input voltage is higher than the voltage threshold value is determined. Under the condition that the input voltage is smaller than the voltage threshold, the input voltage is gradually adjusted according to the cold head temperature, so that the input voltage reaches the voltage threshold, and the possibility of cylinder collision of the Stirling refrigerator is reduced. In the case where the input voltage is greater than or equal to the voltage threshold, the operating power has reached a maximum during the current temperature control phase. The continuous increase of the operation power by adjusting the input voltage can increase the cooling speed of the refrigerator, but can cause the possibility of cylinder collision. The temperature in the refrigerator is gradually reduced by keeping the input voltage unchanged and operating for a set time, so that the operating state of the Stirling refrigerator is adjusted. After the operating power of the Stirling refrigerator is matched with the operating state, the input voltage is continuously adjusted to reduce the temperature in the refrigerator, and the possibility of cylinder collision of the Stirling refrigerator is reduced.
Optionally, the value range of the set duration is [4,6] min. Preferably, the set time period is 4.5min, 5min or 5.5min. Therefore, when the value of the set duration is in the range, the gradual reduction of the temperature in the refrigerator can enable the power of the Stirling refrigerator to be matched with the running state, and the possibility of cylinder collision caused by large change of the running power is reduced.
Alternatively, the refrigerator in step S231 obtains the voltage threshold of the stirling cooler, including: the refrigerator determines a first temperature difference between a cold head temperature and a target temperature. And the refrigerator determines a voltage threshold corresponding to the first temperature difference according to the first temperature difference. Thus, the Stirling cooler is operated at maximum power (i.e., corresponding to a voltage threshold) without hitting the cylinder due to different cold head temperatures. The voltage threshold is determined according to the first temperature difference value between the cold head temperature and the target temperature, so that the input voltage is equal to or slightly higher than the voltage threshold in the current temperature control process, and the possibility of cylinder collision of the Stirling refrigerator is reduced.
The corresponding relationship between the first temperature difference and the voltage threshold is shown in table 1:
TABLE 1
| T 1 (℃) | T 1 ≤10℃ | 10℃<T 1 ≤30℃ | 30℃<T 1 ≤50℃ | 50℃<T 1 ≤80℃ | 80℃<T 1 |
| U t (V) | U n | 0.9U n | 0.7U n | 0.4U n | 0.1U n |
Wherein, T 1 Is a first temperature difference, U t As voltage threshold, U n Is a rated voltage.
Alternatively, the refrigerator adjusting the input voltage of the stirling cooler according to the cold head temperature in step S232 includes: and the refrigerator determines an adjusting voltage corresponding to the first temperature difference according to the first temperature difference. The refrigerator determines a sum of the input voltage and the adjustment voltage as a first target voltage. The refrigerator adjusts an input voltage of the stirling cooler to a first target voltage. In this way, the current adjustment voltage is determined at different current in-box temperatures. By gradually adjusting the input voltage, the operating power of the Stirling refrigerator gradually reaches the maximum power value of the current stage, and the possibility of cylinder collision of the Stirling refrigerator is reduced.
Optionally, the determining, by the refrigerator, an adjustment voltage corresponding to the first temperature difference according to the first temperature difference includes: the refrigerator determines a second temperature difference between the current in-box temperature and the previous in-box temperature. And under the condition that the second temperature difference is smaller than or equal to the second temperature threshold, the refrigerator determines the adjusting voltage corresponding to the first temperature difference according to the first preset corresponding relation. And under the condition that the second temperature difference is larger than the second temperature threshold, the refrigerator determines the adjusting voltage corresponding to the first temperature difference according to a second preset corresponding relation. Under the condition that the second temperature difference value is constant, the adjusting voltage determined according to the first preset corresponding relation is larger than the adjusting voltage determined according to the second preset corresponding relation. And after the preset corresponding relation is determined, determining the adjusting voltage according to the preset corresponding relation all the time until the current temperature in the box is less than or equal to the first temperature threshold value. Therefore, the temperature in the refrigerator is greatly different from the target temperature when the refrigerator is started and the door of the refrigerator is opened in low-temperature work. However, during start-up, the input voltage to the stirling cooler is low. When the box door is opened in the operation process, the Stirling refrigerator has certain input voltage. If the same corresponding relation is adopted, the problem that the cylinder is collided when the refrigerating speed is slow in the starting process or the power is adjusted quickly in the running process can be caused by adjusting the input voltage of the Stirling refrigerating machine. At this time, the state in which the temperature control of the refrigerator is performed is determined by the relationship between the second temperature difference value and the second temperature threshold value. And when the second temperature difference is smaller than or equal to the second temperature threshold, gradually changing the temperature in the box, and determining the adjustment voltage according to the first preset corresponding relation in the starting process. And when the second temperature difference is larger than the second temperature threshold, the temperature in the box is suddenly changed, and the adjustment voltage is determined by opening the box door in the running process and using a second preset corresponding relation. Since different regulated voltages are determined under different conditions, the possibility of cylinder collision of the Stirling refrigerator is reduced.
The first preset corresponding relationship between the first temperature difference and the adjustment voltage is shown in table 2:
TABLE 2
| T 1 (℃) | T 1 ≤10℃ | 10℃<T 1 ≤30℃ | 30℃<T 1 ≤50℃ | 50℃<T 1 ≤80℃ | 80℃<T 1 |
| U a (V) | 2％U n | 3％U n | 4％U n | 5％U n | 2％U n |
The second preset corresponding relationship between the first temperature difference and the adjustment voltage is shown in table 3:
TABLE 3
| T 1 (℃) | T 1 ≤10℃ | 10℃<T 1 ≤30℃ | 30℃<T 1 ≤50℃ | 50℃<T 1 ≤80℃ | 80℃<T 1 |
| U a (V) | 1％U n | 2％U n | 3％U n | 4％U n | 1％U n |
Wherein, T 1 Is a first temperature difference, U a For adjusting the voltage (adjustment per minute), U n Is a rated voltage.
Optionally, the value range of the second temperature threshold is [5,9] ° c. Preferably, the second temperature threshold is 6 ℃, 7 ℃ or 8 ℃. Therefore, when the value of the second temperature threshold is in the range, the refrigerator can be distinguished from the state that the refrigerator is started or the door of the refrigerator is opened in low-temperature work, so that the possibility that the Stirling refrigerator collides with the cylinder is reduced, and the accuracy of temperature adjustment in the refrigerator is improved.
Referring to fig. 5, another method for controlling a temperature of a refrigerator according to an embodiment of the present disclosure includes:
and S210, detecting the cold head temperature of the Stirling refrigerator by the refrigerator.
And S220, detecting the current temperature in the refrigerator by the refrigerator.
And S231, under the condition that the current temperature in the refrigerator is greater than the first temperature threshold value, the refrigerator obtains the voltage threshold value of the Stirling refrigerator.
And S234, under the condition that the input voltage is smaller than the voltage threshold, the refrigerator determines an adjusting voltage corresponding to the first temperature difference according to the first temperature difference.
S235, the refrigerator determines the sum of the input voltage and the adjustment voltage as a first target voltage.
And S236, determining a correction voltage corresponding to the current temperature in the refrigerator according to the current temperature in the refrigerator.
And S237, the refrigerator corrects the first target voltage according to the correction voltage.
S238, the refrigerator adjusts the input voltage of the stirling cooler to a first target voltage.
By adopting the method for controlling the temperature of the refrigerator provided by the embodiment of the disclosure, when the operation power of the Stirling refrigerator is adjusted according to the temperature of the cold head, the current temperature in the refrigerator is added to correct the operation power. The operation power is adjusted and increased through the correction voltage determined according to the current temperature in the refrigerator, and the speed of temperature adjustment in the refrigerator is increased under the condition that the Stirling refrigerator is reduced from colliding with the cylinder.
The second preset corresponding relationship between the current in-box temperature and the correction voltage is shown in table 4:
TABLE 4
| T 3 (℃) | T 3 ≤10℃ | 10℃<T 3 ≤30℃ | 30℃<T 3 ≤50℃ | 50℃<T 3 ≤80℃ | 80℃<T 3 |
| U △ (V) | 0 | 0.1％U n | 0.3％U n | 0.5％U n | 0 |
Wherein, T 3 Is a third temperature difference between the current in-box temperature and the target temperature, U △ To correct the voltage (adjustment per minute), U n Is a rated voltage.
Referring to fig. 6, another method for controlling a temperature of a refrigerator according to an embodiment of the present disclosure includes:
and S210, detecting the cold head temperature of the Stirling refrigerator by the refrigerator.
And S220, detecting the current temperature in the refrigerator by the refrigerator.
And S230, controlling the running power of the Stirling refrigerator according to the cold head temperature by the refrigerator under the condition that the current temperature in the refrigerator is greater than the first temperature threshold value.
And S241, under the condition that the current temperature in the refrigerator is less than or equal to the first temperature threshold, the refrigerator determines a third temperature difference value between the current temperature in the refrigerator and the target temperature.
And S242, determining a second target voltage by the refrigerator through proportional integral derivative operation according to the third temperature difference value.
S243, the refrigerator adjusts the input voltage of the stirling cooler to a second target voltage.
By adopting the method for controlling the temperature of the refrigerator provided by the embodiment of the disclosure, under the condition that the current temperature in the refrigerator is less than or equal to the first temperature threshold value, the current temperature in the refrigerator is close to the target temperature, and the problem that the Stirling refrigerator collides with a cylinder is avoided. At the moment, the second target voltage is determined through proportional-integral-derivative operation, so that the current temperature in the box gradually reaches the target temperature, and the overshoot and the stabilization time of the temperature in the box are reduced.
As shown in fig. 7, an embodiment of the present disclosure provides an apparatus for controlling a temperature of a refrigerator, including a processor (processor) 41 and a memory (memory) 42. Optionally, the apparatus may further include a Communication Interface (Communication Interface) 43 and a bus 44. The processor 41, the communication interface 43, and the memory 42 may communicate with each other via a bus 44. The communication interface 43 may be used for information transfer. The processor 41 may call logic instructions in the memory 42 to perform the method for controlling the temperature of the refrigerator of the above-described embodiment.
Furthermore, the logic instructions in the memory 42 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 42 is a storage medium and can be used for storing software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 41 executes functional applications and data processing, i.e., implements the method for controlling the temperature of the refrigerator in the above-described embodiment, by executing program instructions/modules stored in the memory 42.
The memory 42 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 42 may include a high speed random access memory and may also include a non-volatile memory.
The embodiment of the disclosure provides a refrigerator, which comprises the device for controlling the temperature of the refrigerator.
The disclosed embodiments provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling a temperature of a refrigerator.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of another identical element in a process, method, or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for controlling the temperature of a refrigerator, the refrigerator including a stirling cooler, the method comprising:
detecting the temperature of a cold head of the Stirling refrigerator;
detecting the current temperature in the box;
and under the condition that the current temperature in the refrigerator is greater than a first temperature threshold value, controlling the operating power of the Stirling refrigerator according to the cold head temperature.
2. The method of claim 1, wherein controlling the operating power of the stirling cooler based on the cold head temperature comprises:
obtaining a voltage threshold of the Stirling refrigerator;
under the condition that the input voltage is smaller than the voltage threshold, the input voltage of the Stirling refrigerator is adjusted according to the temperature of the cold head;
and controlling the Stirling refrigerator to operate at the input voltage for a set period of time under the condition that the input voltage is greater than or equal to the voltage threshold value.
3. The method of claim 2, wherein obtaining a voltage threshold for the stirling cooler comprises:
determining a first temperature difference value between the cold head temperature and a target temperature;
and determining a voltage threshold corresponding to the first temperature difference according to the first temperature difference.
4. The method of claim 3, wherein adjusting the input voltage to the Stirling cooler based on the cold head temperature comprises:
determining an adjustment voltage corresponding to the first temperature difference value according to the first temperature difference value;
determining a sum of the input voltage and the adjustment voltage as a first target voltage;
the input voltage of the stirling cooler is regulated to a first target voltage.
5. The method of claim 4, wherein determining the adjustment voltage corresponding to the first temperature difference based on the first temperature difference comprises:
determining a second temperature difference value between the current temperature in the box and the previous temperature in the box;
under the condition that the second temperature difference value is smaller than or equal to the second temperature threshold value, determining an adjusting voltage corresponding to the first temperature difference value according to a first preset corresponding relation;
and under the condition that the second temperature difference is larger than the second temperature threshold, determining the adjusting voltage corresponding to the first temperature difference according to a second preset corresponding relation.
6. The method of any one of claims 1 to 5, further comprising, after detecting the current in-box temperature:
and under the condition that the current temperature in the refrigerator is less than or equal to the first temperature threshold, controlling the operating power of the Stirling refrigerator according to the current temperature in the refrigerator.
7. The method of claim 6, wherein controlling the operating power of the Stirling cooler based on the current in-box temperature comprises:
determining a third temperature difference value between the current temperature in the box and the target temperature;
determining a second target voltage through proportional integral derivative operation according to the third temperature difference;
the input voltage of the Stirling refrigerator is adjusted to a second target voltage.
8. An apparatus for controlling the temperature of a refrigerator, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform the method for controlling the temperature of a refrigerator according to any one of claims 1 to 7 when executing the program instructions.
9. A refrigerator comprising the apparatus for controlling a temperature of a refrigerator according to claim 8.
10. A storage medium storing program instructions, characterized in that, when executed, the program instructions perform the method for controlling the temperature of a refrigerator according to any one of claims 1 to 7.
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| CN202210736781.5A CN115218602B (en) | 2022-06-27 | 2022-06-27 | Method and device for controlling temperature of refrigerator, refrigerator and storage medium |
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| CN202210736781.5A CN115218602B (en) | 2022-06-27 | 2022-06-27 | Method and device for controlling temperature of refrigerator, refrigerator and storage medium |
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| CN115218602A true CN115218602A (en) | 2022-10-21 |
| CN115218602B CN115218602B (en) | 2023-08-11 |
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| CN115218602B (en) | 2023-08-11 |
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