Control method and apparatus of refrigerator, and refrigerator

Abstract

This invention provides a refrigerator control method, device, and refrigerator. The refrigerator control method includes: acquiring the ambient temperature outside the refrigerator, the door opening duration of the refrigerator compartment, the real-time temperature inside the refrigerator compartment at a certain moment, and the normal adjustment mode of the compressor operating frequency; determining whether the ambient temperature and door opening duration meet a first preset condition; if the ambient temperature and door opening duration meet the first preset condition, determining whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than a first preset difference; if so, controlling the compressor operating frequency to increase in real time according to a first calculation rule based on the sub-temperature range of the real-time temperature. The refrigerator control method can predict the cooling capacity demand inside the refrigerator compartment based on the ambient temperature and door opening duration, adjust the compressor operating frequency in advance, avoid large temperature fluctuations inside the refrigerator compartment, and thus avoid affecting the storage of food inside the refrigerator compartment.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, specifically to a control method, device, and refrigerator for a refrigerator. Background Technology

[0002] In traditional refrigerators, the compressor operates at a constant speed, meaning its operating frequency remains constant. Specifically, once the preset temperature range within the refrigerator compartment is set, the compressor starts at a certain speed when the temperature inside the cooling compartment reaches the start-up temperature and continues running until the temperature inside the cooling compartment reaches the shutdown temperature, at which point the compressor stops.

[0003] During refrigerator use, changes in the ambient temperature of the space where the refrigerator is located and the duration of continuous opening of the refrigerator compartment will also affect the cooling capacity demand of the compressor. However, it is difficult for the compressor of a traditional refrigerator to adjust its working state in real time according to the cooling capacity demand of the compartment, which will lead to large temperature fluctuations in the refrigerator compartment and thus affect the storage of food in the refrigerator compartment. Summary of the Invention

[0004] This invention provides a refrigerator control method, a device, and a refrigerator to solve the above-mentioned technical problems.

[0005] To achieve one of the above-mentioned objectives, an embodiment of the present invention provides a refrigerator control method, which includes the following steps:

[0006] The system acquires the ambient temperature outside the refrigerator, the duration of the refrigerator compartment door being open, the real-time temperature inside the refrigerator compartment at a certain moment, and the normal adjustment mode of the compressor operating frequency. The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range having a corresponding frequency value. When the real-time temperature enters a sub-temperature range, the compressor operating frequency is adjusted in real time according to the frequency value corresponding to that sub-temperature range.

[0007] Determine whether the ambient temperature and the door opening duration meet the first preset condition;

[0008] If the ambient temperature and the door opening time meet the first preset condition, then it is determined whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference; the real-time temperature difference is the difference between the real-time temperature and the preset expected value.

[0009] If so, the operating frequency of the compressor is controlled to increase in real time according to the sub-temperature range in which the real-time temperature is located, based on the first calculation rule; the first calculation rule is used to increase the frequency value corresponding to the sub-temperature range when the real-time temperature enters a sub-temperature range.

[0010] As a further improvement to the above technology, after the steps of "acquiring the external ambient temperature of the refrigerator, the opening time of the refrigerator compartment, the real-time temperature inside the refrigerator compartment at a certain moment, and the normal adjustment mode of the compressor operating frequency", and before the steps of "determining whether the ambient temperature and the opening time meet the first preset condition", the following step is also included:

[0011] Determine whether the real-time temperature has reached a preset critical value, wherein the preset critical value is greater than a preset expected value;

[0012] Until the real-time temperature reaches the preset critical value, the step "determine whether the ambient temperature and the door opening time meet the first preset condition" is executed.

[0013] As a further improvement to the above technology, the normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range having a corresponding frequency value, and the frequency value increasing as the maximum value at the endpoint of the sub-temperature range increases. When the real-time temperature enters a sub-temperature range, the operating frequency of the compressor is controlled to be adjusted in real time according to the frequency value corresponding to that sub-temperature range.

[0014] As a further improvement to the above technology, after the step of "determining whether the ambient temperature and the door opening time meet the first preset condition", the following is also included:

[0015] When the ambient temperature and the door opening time do not meet the first preset condition, the step "determine whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference" is executed.

[0016] If the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is greater than the first preset difference, then the operating frequency of the compressor is controlled to increase by the corresponding frequency value according to the sub-temperature range in which the real-time temperature is located.

[0017] If the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is less than or equal to a first preset difference, then the operating frequency of the compressor is controlled to remain unchanged.

[0018] As a further improvement to the above technology, after the step of "determining whether the ambient temperature and the door opening time meet the first preset condition", the following is also included:

[0019] When the ambient temperature and the door opening time do not meet the first preset condition, the step "determine whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference" is executed.

[0020] If the real-time temperature is less than or equal to the real-time temperature at the previous moment, and the real-time temperature difference is greater than the first preset difference, then the operating frequency of the compressor is controlled to decrease according to the sub-temperature range in which the real-time temperature is located.

[0021] If the real-time temperature is less than or equal to the real-time temperature at the previous moment, and the real-time temperature difference is less than or equal to the first preset difference, then the operating frequency of the compressor is controlled to remain unchanged.

[0022] As a further improvement to the above technology, after the steps of "controlling the compressor's operating frequency to increase in real time according to the sub-temperature range where the real-time temperature is located" or "controlling the compressor's operating frequency to remain unchanged" or "controlling the compressor's operating frequency to decrease by the corresponding frequency change amount according to the first preset difference range where the real-time temperature difference is located" or "controlling the compressor's operating frequency to increase by the corresponding frequency change amount according to the first preset difference range where the real-time temperature difference is located", the following is also included:

[0023] The compressor is controlled to stop after a preset operating time.

[0024] If the real-time temperature difference is greater than the preset start-up value, the compressor is controlled to work; otherwise, the compressor is controlled to remain in a stopped state. The preset start-up value is greater than or equal to the difference between the preset critical value and the preset expected value.

[0025] As a further improvement to the above technology, the first preset condition is set to the ambient temperature being greater than or equal to a preset ambient temperature value, and the door opening time being greater than a preset door opening time value.

[0026] As a further improvement to the above technology, the opening time of the refrigerator compartment is the cumulative opening time of the refrigerator compartment within a preset time period.

[0027] An embodiment of the present invention also provides a control device for a refrigerator, used to control the operation of the compressor inside the refrigerator. It includes:

[0028] The temperature detection unit is used to detect the ambient temperature outside the refrigerator and the real-time temperature inside the refrigerator compartment at a certain moment.

[0029] The calculation unit is used to accumulate the opening time of the refrigerator compartment and calculate the real-time temperature difference, wherein the real-time temperature difference is the difference between the real-time temperature and the preset expected value.

[0030] The judgment unit is used to determine whether the ambient temperature and the door opening time meet the first preset condition, whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference.

[0031] The processing unit adjusts the operating frequency of the compressor in real time according to the judgment result of the judgment unit or the first calculation rule.

[0032] The temperature detection unit, calculation unit, judgment unit, and processing unit are electrically connected to each other. The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range having a corresponding frequency value. When the real-time temperature enters a sub-temperature range, the compressor's operating frequency is adjusted in real time according to the frequency value corresponding to that sub-temperature range. The first calculation rule is used to increase the frequency value corresponding to the sub-temperature range when the real-time temperature enters a sub-temperature range.

[0033] One embodiment of the present invention also provides a refrigerator, which includes a compressor and a control device for the refrigerator.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: the refrigerator control method, device and refrigerator provided in one embodiment of the present invention can predict the cooling capacity demand of the refrigerator compartment according to the ambient temperature and the door opening time, and adjust the operating frequency of the compressor in advance to avoid large temperature fluctuations in the refrigerator compartment, thereby avoiding affecting the storage of food in the refrigerator compartment. Attached Figure Description

[0035] Figure 1 This is a schematic flowchart of a refrigerator control method provided in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of a refrigerator control device provided in an embodiment of the present invention. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] One embodiment of the present invention provides a refrigerator control method, such as... Figure 1 As shown, it includes the following steps:

[0039] S10 is a normal adjustment mode that obtains the ambient temperature outside the refrigerator, the duration of the refrigerator compartment door opening, the real-time temperature inside the refrigerator compartment at a certain moment, and the compressor operating frequency.

[0040] The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range having a corresponding frequency value; when the real-time temperature enters a sub-temperature range, the compressor's operating frequency is adjusted in real time according to the frequency value corresponding to that sub-temperature range.

[0041] In one embodiment of the present invention, the normal adjustment mode includes dividing the temperature range [first preset critical value, preset expected value - first preset difference] and [preset expected value + first preset difference, second preset critical value] into several sub-temperature ranges. Each sub-temperature range is respectively set with a frequency value, and the frequency value increases as the maximum value of the endpoint of the sub-temperature range increases. When the real-time temperature enters a sub-temperature range, the processing unit controls the operating frequency of the compressor to be adjusted in real time according to the frequency value corresponding to the sub-temperature range.

[0042] In other words, when the real-time temperature falls within the range of [preset expected value - first preset difference, preset expected value + first preset difference], the operating frequency of the compressor remains constant. Conversely, when the difference between the real-time temperature and the preset expected value is less than the first preset difference, the operating frequency of the compressor remains constant. This ensures that the temperature inside the refrigerator compartment fluctuates stably around the preset expected value, thus avoiding frequent start-stop cycles of the compressor.

[0043] Optionally, the first preset difference can be set to 0.1 degrees Celsius; the first preset critical value can be set to a preset expected value minus 0.5 degrees Celsius; and the second preset critical value can be set to a preset expected value plus 0.5 degrees Celsius.

[0044] S30, determine whether the ambient temperature and the door opening time meet the first preset condition;

[0045] The opening time of the refrigerator compartment can be set as the cumulative opening time of the refrigerator compartment within a preset time period. Of course, in other embodiments of the present invention, the opening time of the refrigerator compartment can also be set as the opening time of the refrigerator compartment during a single opening process. Furthermore, as will be readily apparent to those skilled in the art, the preset time period can be set as needed, and all schemes identical or similar to this embodiment are covered within the protection scope of the present invention.

[0046] In addition, the first preset condition can be set to the ambient temperature being greater than the preset value of ambient temperature, and the door opening time being greater than the preset value of door opening time.

[0047] Optionally, the preset ambient temperature can be set to 10 degrees Celsius. The preset door opening time can be set to 10 seconds. Of course, the preset ambient temperature and the preset door opening time can be set as needed, and all technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0048] S50, if the ambient temperature and the door opening time meet the first preset condition, then determine whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference; the real-time temperature difference is the difference between the real-time temperature and the preset expected value.

[0049] S70, if the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is greater than the first preset difference, then according to the sub-temperature range in which the real-time temperature is located, the operating frequency of the compressor is controlled to increase in real time according to the first calculation rule.

[0050] The first calculation rule is used to increase the frequency value corresponding to the sub-temperature range when the real-time temperature enters a sub-temperature range. This ensures that when the real-time temperature and the real-time temperature difference satisfy the condition that "the real-time temperature is greater than the real-time temperature at the previous moment and the real-time temperature difference is greater than the first preset difference", the frequency value of the compressor's operating frequency is increased by a value greater than the frequency value of the compressor's operating frequency when the real-time temperature is in normal adjustment mode. This allows the compressor to predict the cooling capacity demand of the refrigerator compartment based on the ambient temperature and the duration of door opening, and adjust the compressor's operating frequency in advance to avoid large temperature fluctuations inside the refrigerator compartment.

[0051] Specifically, the first calculation rule can be set to be such that when the real-time temperature and the real-time temperature difference satisfy the above-mentioned "the real-time temperature is greater than the real-time temperature at the previous moment and the real-time temperature difference is greater than the first preset difference", when the real-time temperature enters a sub-temperature range, the processing unit controls the compressor to increase its operating frequency by twice the frequency value corresponding to the sub-temperature range.

[0052] Of course, in the first calculation rule, when the real-time temperature and the real-time temperature difference meet the above conditions, and the real-time temperature enters a sub-temperature range, the amount by which the processing unit controls the compressor's operating frequency to increase can be set as needed, as long as the frequency value corresponding to a sub-temperature range under the first calculation rule is greater than the frequency value corresponding to that sub-temperature range in normal adjustment mode. All technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0053] S90, if the real-time temperature is less than or equal to the real-time temperature at the previous moment, or if the real-time temperature difference is less than or equal to the first preset difference, then the operating frequency of the compressor is controlled to remain unchanged.

[0054] That is, if either the real-time temperature or the real-time temperature difference does not satisfy the condition that "the real-time temperature is greater than the real-time temperature at the previous moment and the real-time temperature difference is greater than the first preset difference", then the operating frequency of the compressor will be kept unchanged.

[0055] In one embodiment of the present invention, after step S10 "acquiring the external ambient temperature of the refrigerator, the opening time of the refrigerator compartment, the real-time temperature inside the refrigerator compartment at a certain moment, and the normal adjustment mode of the compressor operating frequency", and before step S30 "determining whether the ambient temperature and the opening time meet the first preset condition", step S20 is further included:

[0056] Determine whether the real-time temperature has reached a preset critical value, wherein the preset critical value is greater than a preset expected value; wherein the preset critical value may include a first preset critical value and a second preset critical value.

[0057] Until the real-time temperature reaches the preset critical value, step S30 is executed: "Determine whether the ambient temperature and the door opening time meet the first preset condition".

[0058] That is, when the compressor starts working, it first adjusts the temperature inside the refrigerator compartment to a preset critical value, and then adjusts the operating frequency of the compressor in real time according to the ambient temperature, the duration of door opening, the rise or fall of the temperature inside the refrigerator compartment, and the real-time temperature difference, so as to avoid large fluctuations in the temperature inside the refrigerator compartment and avoid affecting the storage of food inside the refrigerator compartment.

[0059] In one embodiment of the present invention, after step S30 "determining whether the ambient temperature and the door opening duration meet the first preset condition", the method further includes:

[0060] When the ambient temperature and the door opening duration do not meet the first preset conditions, the working state of the compressor is adjusted in real time according to the normal adjustment mode.

[0061] Specifically, when the ambient temperature and the door opening time do not meet the first preset condition, step S50 is executed: "determine whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference".

[0062] If the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is greater than a first preset difference, then the operating frequency of the compressor is increased by the corresponding frequency value according to the sub-temperature range in which the real-time temperature is located.

[0063] If the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is less than or equal to a first preset difference, then the operating frequency of the compressor is controlled to remain unchanged.

[0064] If the real-time temperature is less than or equal to the real-time temperature at the previous moment, and the real-time temperature difference is greater than a first preset difference, then the operating frequency of the compressor is controlled to decrease according to the sub-temperature range in which the real-time temperature is located.

[0065] If the real-time temperature is less than or equal to the real-time temperature at the previous moment, and the real-time temperature difference is less than or equal to the first preset difference, then the operating frequency of the compressor is controlled to remain unchanged.

[0066] That is, when the ambient temperature and the door opening time do not meet the first preset condition, the temperature inside the refrigerator compartment is less affected by the outside world, and the temperature inside the refrigerator compartment is controlled to fluctuate around the preset expected value, thereby avoiding frequent start-stop of the compressor and reducing the operating noise of the compressor; at the same time, it also avoids large fluctuations in the temperature inside the refrigerator compartment.

[0067] Furthermore, after the steps of "controlling the compressor's operating frequency to increase in real time according to the sub-temperature range where the real-time temperature is located" or "controlling the compressor's operating frequency to remain unchanged" or "controlling the compressor's operating frequency to decrease by the corresponding frequency change amount according to the first preset difference range where the real-time temperature difference is located" or "controlling the compressor's operating frequency to increase by the corresponding frequency change amount according to the first preset difference range where the real-time temperature difference is located", the following is also included:

[0068] The compressor is controlled to stop after a preset operating time.

[0069] If the real-time temperature difference is greater than the preset value for startup, the compressor is controlled to work; otherwise, the compressor is controlled to remain in a stopped state. The preset value for startup is greater than or equal to the difference between the preset critical value and the preset expected value.

[0070] Optionally, the power-on preset value can be set to 0.5 degrees Celsius.

[0071] In the aforementioned refrigerator control method, the method predicts the cooling capacity demand inside the refrigerator compartment based on the ambient temperature and door opening duration, thereby adjusting the compressor's operating frequency in advance to avoid large temperature fluctuations inside the refrigerator compartment and thus prevent affecting the storage of food inside. Simultaneously, by keeping the refrigerator compartment temperature fluctuating around a preset desired value, frequent compressor starts and stops are avoided, reducing refrigerator operating noise and saving energy.

[0072] One embodiment of the present invention provides a refrigerator control device 100 for controlling the operation of the compressor inside the refrigerator, such as... Figure 2 As shown, it includes:

[0073] Temperature detection unit 10 is used to detect the ambient temperature outside the refrigerator and the real-time temperature inside the refrigerator compartment at a certain moment.

[0074] The calculation unit 20 is used to accumulate the opening time of the refrigerator compartment and calculate the real-time temperature difference, wherein the real-time temperature difference is the difference between the real-time temperature and the preset expected value.

[0075] The judgment unit 30 is used to judge whether the ambient temperature and the door opening time meet the first preset condition, whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference. The real-time temperature difference is the difference between the real-time temperature and the preset expected value.

[0076] The processing unit 40 adjusts the operating frequency of the compressor in real time according to the judgment result of the judgment unit 30, either in a normal adjustment mode or according to the first calculation rule.

[0077] The temperature detection unit 10, calculation unit 20, judgment unit 30, and processing unit 40 are electrically connected. The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each with a corresponding frequency value. When the real-time temperature enters a sub-temperature range, the compressor's operating frequency is adjusted in real-time according to the frequency value corresponding to that sub-temperature range. The first calculation rule is used to increase the frequency value corresponding to a sub-temperature range when the real-time temperature enters that sub-temperature range.

[0078] Specifically, the normal adjustment mode includes dividing the temperature range [first preset critical value, preset expected value - first preset difference] and the temperature range [preset expected value + first preset difference, second preset critical value] into several sub-temperature ranges. Each sub-temperature range is respectively set with a frequency value, and the frequency value increases as the maximum value at the endpoint of the sub-temperature range increases. When the real-time temperature enters a sub-temperature range, the processing unit controls the compressor's operating frequency to be adjusted in real time according to the frequency value corresponding to the sub-temperature range.

[0079] Optionally, the first preset threshold value can be set to a preset expected value minus 0.5 degrees Celsius; the second preset threshold value can be set to a preset expected value plus 0.5 degrees Celsius.

[0080] Furthermore, the statement "when the real-time temperature enters a sub-temperature range, the processing unit 40 controls the compressor's operating frequency to be adjusted in real time according to the frequency value corresponding to the sub-temperature range" can be set as follows:

[0081] The aforementioned judgment unit 30 determines whether the real-time temperature is greater than the real-time temperature of the previous cycle;

[0082] In this embodiment, the first calculation rule can be set to be such that when the real-time temperature and the real-time temperature difference satisfy the above-mentioned "the real-time temperature is greater than the real-time temperature at the previous moment and the real-time temperature difference is greater than the first preset difference", when the real-time temperature enters a sub-temperature range, the processing unit 40 controls the compressor to increase the operating frequency of the compressor by twice the frequency value corresponding to the sub-temperature range.

[0083] Of course, in the first calculation rule, when the real-time temperature and the real-time temperature difference meet the above conditions, and the real-time temperature enters a sub-temperature range, the amount by which the processing unit 40 controls the compressor's operating frequency to increase can be set as needed, as long as the frequency value corresponding to a sub-temperature range under the first calculation rule is greater than the frequency value corresponding to that sub-temperature range in normal adjustment mode. All technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0084] During the operation of the aforementioned control device 100: First, the processing unit 40 controls the compressor to start working at an initial frequency, so that the temperature inside the refrigerator compartment is quickly adjusted to a first preset critical value or a second preset critical value. The temperature detection unit 10 detects the real-time temperature inside the refrigerator compartment and the ambient temperature outside the refrigerator at regular intervals; and the temperature detection unit 10 transmits the real-time temperature information and the ambient temperature information to the judgment unit.

[0085] Optionally, the cycle can be set to 1 minute. Of course, the cycle can also be set as needed. All technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0086] Specifically, when the ambient temperature outside the refrigerator is high, that is, when the judgment unit 30 determines that the ambient temperature is greater than a preset ambient temperature value, the calculation unit 20 accumulates the door opening time of the refrigerator compartment and transmits the door opening time information to the judgment unit. If the door opening time is greater than the preset door opening time value, the judgment unit 30 determines whether the real-time temperature is greater than the real-time temperature of the previous cycle, and whether the real-time temperature difference is greater than a first preset difference value. The first preset difference value can be set to 0.1 degrees Celsius.

[0087] Optionally, the preset ambient temperature can be set to 10 degrees Celsius. The preset door opening time can be set to 10 seconds. Of course, the preset ambient temperature and the preset door opening time can be set as needed, and all technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0088] Furthermore, when the judgment unit 30 determines, based on the comparison between the real-time temperature and the real-time temperature of the previous cycle, and the comparison between the real-time temperature difference and the first preset difference, that the real-time temperature is greater than the real-time temperature of the previous cycle and the real-time temperature difference is greater than the first preset difference, the judgment result of the real-time temperature being greater than the real-time temperature of the previous cycle and the real-time temperature difference being greater than the first preset difference is transmitted to the processing unit 40, and the processing unit 40 controls the operating frequency of the compressor to increase in real time according to the first calculation rule.

[0089] That is, when the temperature inside the refrigerator compartment is rising and the real-time temperature difference is greater than the first preset difference, the processing unit 40 increases the operating frequency of the compressor according to the first calculation rule based on the sub-temperature range where the real-time temperature is located.

[0090] When either the real-time temperature or the real-time temperature difference does not satisfy the condition that "the real-time temperature is greater than the real-time temperature of the previous cycle and the real-time temperature difference is greater than the first preset difference", the operating frequency of the compressor is controlled to remain unchanged.

[0091] In this embodiment, if either the ambient temperature or the door opening time does not meet the above-mentioned conditions of "the ambient temperature being greater than the preset value of the ambient temperature" and "the door opening time being greater than the preset value of the door opening time", the processing unit 40 adjusts the operating frequency of the compressor in real time according to the normal adjustment mode.

[0092] That is, when the real-time temperature is greater than the real-time temperature of the previous cycle, that is, when the temperature of the refrigerator compartment is rising, the judgment unit 30 judges whether the real-time temperature difference is greater than the first preset difference; wherein, if the real-time temperature difference is greater than the first preset difference, the processing unit 40 increases the operating frequency of the compressor according to the frequency value corresponding to the sub-temperature range in which the real-time temperature is located; otherwise, the processing unit 40 controls the operating frequency of the compressor to remain unchanged.

[0093] When the real-time temperature is less than or equal to the real-time temperature of the previous cycle, that is, when the temperature of the refrigerator compartment is decreasing, the judgment unit 30 determines whether the real-time temperature difference is greater than the first preset difference; wherein, if the real-time temperature difference is greater than the first preset difference, the processing unit 40 reduces the operating frequency of the compressor according to the frequency value corresponding to the sub-temperature range in which the real-time temperature is located; otherwise, the processing unit 40 controls the operating frequency of the compressor to remain unchanged.

[0094] In one embodiment of the present invention, when the compressor is started, the calculation unit 20 is further used to accumulate the working time of the compressor and transmit the working time information to the judgment unit 30; the judgment unit 30 determines whether the working time is greater than or equal to a preset working time. If the working time exceeds the preset working time, the processing unit 40 controls the compressor to stop. The preset working time can also be set as needed. All technical solutions that are the same as or similar to this embodiment are covered within the protection scope of the present invention.

[0095] Furthermore, during the compressor shutdown process, the temperature detection unit 10 detects the real-time temperature inside the refrigerator compartment at regular intervals, and the calculation unit 20 calculates the real-time temperature difference. The judgment unit 30 determines whether the real-time temperature difference is greater than the preset start-up value; if so, it controls the compressor to operate; if not, it controls the compressor to remain in a stopped state; wherein, the preset start-up value is greater than or equal to the difference between the preset critical value and the preset expected value.

[0096] Optionally, the power-on preset value can be set to 0.5 degrees Celsius.

[0097] In addition, the present invention also provides a refrigerator, which includes a compressor and the control device 100 described above.

[0098] In summary, the beneficial effects of the refrigerator control method, device, and refrigerator provided in one embodiment of the present invention are as follows: by determining whether the ambient temperature and door opening time meet the first preset condition, when the ambient temperature and door opening time meet the first preset condition, it is determined whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference; if the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is greater than the first preset difference, then according to the sub-temperature range in which the real-time temperature is located, the operating frequency of the compressor is controlled to increase in real time according to the first calculation rule. This allows the cooling capacity demand of the refrigerator compartment to be predicted based on the ambient temperature and door opening time, thereby adjusting the operating frequency of the compressor in advance to avoid large temperature fluctuations in the refrigerator compartment, and thus avoid affecting the storage of food in the refrigerator compartment.

[0099] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0100] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling a refrigerator, characterized in that, Includes the following steps: The system acquires the ambient temperature outside the refrigerator, the duration of the refrigerator compartment door being open, the real-time temperature inside the refrigerator compartment at a certain moment, and the normal adjustment mode of the compressor operating frequency. The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range having a corresponding frequency value. When the real-time temperature enters a sub-temperature range, the compressor operating frequency is adjusted in real time according to the frequency value corresponding to that sub-temperature range. Determine whether the ambient temperature and the door opening duration meet the first preset condition; The first preset condition is set to the ambient temperature being greater than or equal to a preset ambient temperature value, and the door opening time being greater than a preset door opening time value; the door opening time of the refrigerator compartment is the cumulative door opening time of the refrigerator compartment within a preset time period; If the ambient temperature and the door opening time meet the first preset condition, then it is determined whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference; the real-time temperature difference is the difference between the real-time temperature and the preset expected value. If so, the operating frequency of the compressor is controlled to increase in real time according to the sub-temperature range in which the real-time temperature is located, based on the first calculation rule. The first calculation rule is used to control the operating frequency of the compressor to increase by twice the frequency value corresponding to the sub-temperature range when the real-time temperature enters a sub-temperature range. When the ambient temperature and the door opening time do not meet the first preset condition, it is determined whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference. If the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is greater than the first preset difference, then the operating frequency of the compressor is controlled to increase by the corresponding frequency value according to the sub-temperature range in which the real-time temperature is located. If the real-time temperature is greater than the real-time temperature at the previous moment, and the real-time temperature difference is less than or equal to the first preset difference, then the operating frequency of the compressor is controlled to remain unchanged. If the real-time temperature is less than or equal to the real-time temperature at the previous moment, and the real-time temperature difference is greater than the first preset difference, then the operating frequency of the compressor is controlled to decrease according to the sub-temperature range in which the real-time temperature is located. If the real-time temperature is less than or equal to the real-time temperature at the previous moment, and the real-time temperature difference is less than or equal to the first preset difference, then the operating frequency of the compressor is controlled to remain unchanged.

2. The refrigerator control method according to claim 1, characterized in that, After the above steps of "obtaining the external ambient temperature of the refrigerator, the opening time of the refrigerator compartment, the real-time temperature inside the refrigerator compartment at a certain moment, and the normal adjustment mode of the compressor operating frequency", and before the above steps of "determining whether the ambient temperature and the opening time meet the first preset condition", the following steps are also included: Determine whether the real-time temperature has reached a preset critical value, wherein the preset critical value is greater than a preset expected value; Until the real-time temperature reaches the preset critical value, the step "determine whether the ambient temperature and the door opening time meet the first preset condition" is executed.

3. The refrigerator control method according to claim 1, characterized in that, The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range having a corresponding frequency value, and the frequency value increasing as the maximum value at the endpoint of the sub-temperature range increases. When the real-time temperature enters a sub-temperature range, the operating frequency of the compressor is controlled to be adjusted in real time according to the frequency value corresponding to that sub-temperature range.

4. The refrigerator control method according to claim 2, characterized in that, Following the steps "controlling the compressor's operating frequency to increase in real time according to the first calculation rule based on the sub-temperature range of the real-time temperature" or "controlling the compressor's operating frequency to remain unchanged" or "controlling the compressor's operating frequency to decrease by the corresponding frequency change based on the first preset difference range of the real-time temperature difference" or "controlling the compressor's operating frequency to increase by the corresponding frequency change based on the first preset difference range of the real-time temperature difference", the following is also included: The compressor is controlled to stop after a preset operating time. If the real-time temperature difference is greater than the preset value for startup, the compressor is controlled to work; otherwise, the compressor is controlled to remain in a stopped state. Wherein, the preset power-on value is greater than or equal to the difference between the preset threshold value and the preset expected value.

5. A control device for a refrigerator, used to control the operation of the compressor inside the refrigerator, characterized in that, include: The temperature detection unit is used to detect the ambient temperature outside the refrigerator and the real-time temperature inside the refrigerator compartment at a certain moment. The calculation unit is used to accumulate the opening time of the refrigerator compartment and calculate the real-time temperature difference, wherein the real-time temperature difference is the difference between the real-time temperature and the preset expected value. The judgment unit is used to determine whether the ambient temperature and the door opening time meet the first preset condition, whether the real-time temperature is greater than the real-time temperature at the previous moment, and whether the real-time temperature difference is greater than the first preset difference. The processing unit adjusts the operating frequency of the compressor in real time according to the judgment result of the judgment unit, either by increasing, keeping it unchanged, or decreasing the frequency, in accordance with the normal adjustment mode or the first calculation rule. The temperature detection unit, calculation unit, judgment unit, and processing unit are electrically connected. The normal adjustment mode includes dividing the temperature range into multiple sub-temperature ranges, each sub-temperature range corresponding to a set frequency value. When the real-time temperature enters a sub-temperature range, the compressor's operating frequency is adjusted in real time according to the frequency value corresponding to that sub-temperature range. The first preset condition is set to the ambient temperature being greater than or equal to a preset ambient temperature value, and the door opening time being greater than a preset door opening time value. The door opening time of the refrigerator compartment is the cumulative door opening time of the refrigerator compartment within a preset time period. The first calculation rule is used to double the frequency value corresponding to the sub-temperature range when the real-time temperature enters a sub-temperature range.

6. A refrigerator, characterized in that, include: The compressor and the control device for the refrigerator as described in claim 5 above.

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