Control method of refrigeration equipment, refrigeration equipment and refrigerator

Abstract

The invention relates to a control method of refrigeration equipment, the refrigeration equipment and a refrigerator and relates to the technical field of refrigeration, and the method comprises the steps that under the condition that the temperature of an object in the refrigeration equipment is smaller than a preset temperature, the cooling speed change rate of the object is determined; under the condition that the cooling speed change rate is smaller than a preset value, the freezing temperature of the article is obtained according to the target cooling speed of the article; and the refrigeration temperature in the refrigeration equipment is adjusted to be higher than the freezing temperature. By means of the control method of the refrigeration equipment, the refrigeration equipment and the refrigerator, the freezing temperatures of different objects can be obtained, the refrigeration temperature is adjusted to be higher than the freezing temperature, and the object freezing probability is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of refrigeration technology, and in particular to a control method for a refrigeration device, a refrigeration device and a refrigerator. Background Art

[0002] In refrigerators and other equipment, freshness preservation or low-temperature storage is usually the core function of refrigeration equipment. At present, in addition to the more common refrigerated fruit and vegetable storage and frozen meat storage, refrigerators are also equipped with an additional independent storage space for short-term storage of meat in the refrigerator.

[0003] In the related art, some meat stored in a refrigerator is prone to freezing, and the frozen meat is difficult to cut, which reduces the user experience. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a control method of a refrigeration device, a refrigeration device and a refrigerator.

[0005] According to a first aspect of an embodiment of the present disclosure, a control method for a refrigeration device is provided, the method comprising:

[0006] When the temperature of the object in the refrigeration device is lower than a preset temperature, determining a rate of change of a cooling speed of the object;

[0007] When the rate of change of the cooling speed is less than a preset value, the freezing temperature of the object is obtained according to the target cooling speed of the object;

[0008] The refrigeration temperature in the refrigeration equipment is adjusted to be above the freezing temperature.

[0009] Optionally, determining the rate of change of the cooling speed of the object includes:

[0010] Determine the maximum cooling rate and the minimum cooling rate of the item during the cooling process;

[0011] The temperature reduction rate change rate is obtained according to the maximum temperature reduction rate and the minimum temperature reduction rate.

[0012] Optionally, determining the maximum cooling rate and the minimum cooling rate of the object during the cooling process includes:

[0013] Dividing the cooling process of the article into at least two cooling intervals;

[0014] For each of the at least two cooling intervals, determining a cooling speed corresponding to each cooling interval;

[0015] The maximum cooling rate and the minimum cooling rate are selected from the cooling rates corresponding to the at least two cooling intervals.

[0016] Optionally, obtaining the freezing temperature of the object according to the target cooling rate of the object includes:

[0017] Obtaining the target cooling rate according to the maximum cooling rate and the minimum cooling rate;

[0018] The freezing temperature is obtained according to the target cooling rate.

[0019] Optionally, obtaining the freezing temperature of the object according to the target cooling rate of the object includes:

[0020] Obtaining the target cooling rate according to an intermediate cooling rate between the maximum cooling rate and the minimum cooling rate;

[0021] The freezing temperature is obtained according to the target cooling rate.

[0022] Optionally, obtaining the freezing temperature of the object according to the target cooling rate of the object includes:

[0023] The freezing temperature is obtained according to the target cooling speed and the cooling time corresponding to the cooling interval.

[0024] Optionally, there is a preset time interval between two adjacent cooling intervals in the at least two cooling intervals.

[0025] Optionally, the method further comprises:

[0026] The refrigeration temperature in the refrigeration equipment is controlled to decrease with the goal of being lower than the preset temperature.

[0027] Optionally, when the temperature of the object in the refrigeration device is lower than a preset temperature, determining the rate of change of the cooling speed of the object includes:

[0028] monitoring the temperature of the article while the refrigeration temperature in the refrigeration equipment is decreasing;

[0029] When the temperature of the object is lower than the preset temperature, a rate of change of the temperature reduction speed after the temperature of the object is lower than the preset temperature is determined.

[0030] According to a second aspect of an embodiment of the present disclosure, there is provided a refrigeration device, including a control device and an adjustment device;

[0031] The control device is used to determine the rate of change of the cooling speed of the object in the refrigeration device; and when the rate of change of the cooling speed is less than a preset value, obtain the freezing temperature of the object according to the target cooling speed of the object;

[0032] The regulating device is used to regulate the refrigeration temperature in the refrigeration equipment to be higher than the freezing temperature.

[0033] Optionally, the refrigeration device further includes a temperature-changing box, a drawer, an air inlet and an air outlet;

[0034] The drawer is slidably disposed in the temperature-changing box, and the drawer is used to accommodate the items;

[0035] The air inlet is provided on the temperature-changing box and is used to transmit cold air into the drawer;

[0036] The air outlet is provided on the temperature-changing box and is used to discharge the cold air in the drawer;

[0037] The regulating device is arranged on the top of the temperature-changing box, and is used for regulating the refrigeration temperature in the drawer to be higher than the freezing temperature.

[0038] Optionally, the refrigeration equipment further includes a detection device;

[0039] The detection device is arranged at the bottom of the temperature-changing box, and is used to monitor the temperature of the items in the drawer when the regulating device controls the refrigeration temperature in the drawer to drop.

[0040] Optionally, a cooling component is provided at the bottom of the drawer, and the detection device is provided below the cooling component to monitor the temperature of items placed on the cooling component.

[0041] According to a third aspect of an embodiment of the present disclosure, a control device for a refrigeration device is provided to implement the steps of the control method for a refrigeration device provided in the first aspect of an embodiment of the present disclosure.

[0042] According to a fourth aspect of an embodiment of the present disclosure, a refrigerator is provided, which is equipped with the refrigeration device provided by the second aspect of the embodiment of the present disclosure and / or is equipped with a control device for the refrigeration device provided by the first aspect of the embodiment of the present disclosure.

[0043] According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the control method of the refrigeration equipment provided by the first aspect of the embodiment of the present disclosure are implemented.

[0044] According to a sixth aspect of an embodiment of the present disclosure, a computer program product is provided, including a computer program, which, when executed by a processor, implements the steps of the control method for a refrigeration device provided in the first aspect of an embodiment of the present disclosure.

[0045] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0046] Through the above technical scheme, the freezing temperatures of different items can be obtained for different items, and then the refrigeration temperature of the refrigeration equipment can be adaptively adjusted to be higher than the freezing temperature of the items. While ensuring that the items are not frozen as much as possible, the storage time of the items is also extended to ensure the freshness of the items.

[0047] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0049] Figure 1 The figure is a flow chart of a method for controlling a refrigeration device according to an exemplary embodiment.

[0050] Figure 2 is a schematic diagram of a typical cooling curve for meat according to an exemplary embodiment.

[0051] Figure 3 The figure is a temperature diagram of pork, refrigeration temperature and beef according to an exemplary embodiment.

[0052] Figure 4 The figure is a flow chart of a method for controlling a refrigeration device according to an exemplary embodiment.

[0053] Figure 5 The diagram is a schematic diagram showing a method of dividing a cooling process into a plurality of cooling intervals according to an exemplary embodiment.

[0054] Figure 6 The diagram is a logic diagram showing a method of obtaining a target cooling rate according to an exemplary embodiment.

[0055] Figure 7 The figure is a flow chart of a method for controlling a refrigeration device according to an exemplary embodiment.

[0056] Figure 8 The figure is a schematic diagram showing a control of a cooling curve of an object according to an exemplary embodiment.

[0057] Fig. 9 It is an overall schematic diagram of a refrigeration device according to an exemplary embodiment.

[0058] Fig.10 is a cross-sectional view of a refrigeration device according to an exemplary embodiment.

[0059] Fig.11 The invention is a block diagram showing a control device for a refrigeration device according to an exemplary embodiment.

[0060] Fig.12 The invention is a block diagram showing a control device for a refrigeration device according to an exemplary embodiment.

[0061] Fig.13 is a block diagram of a chip system according to an exemplary embodiment. DETAILED DESCRIPTION

[0062] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0063] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0064] Figure 1 is a flow chart of a control method for a refrigeration device according to an exemplary embodiment. Figure 1 As shown, the following steps are included.

[0065] In step S10, when the temperature of the object in the refrigeration device is lower than a preset temperature, the rate of change of the temperature reduction speed of the object is determined.

[0066] The refrigeration device includes a storage space for short-term storage of items, and the refrigeration device is capable of monitoring a refrigeration temperature of the internal storage space, adjusting the refrigeration temperature of the internal storage space, and monitoring the temperature of items located in the storage space.

[0067] The items stored in the refrigeration equipment can be food, medicine, cosmetics, skin care products, liquid metal, etc. Food can be meat, fish, liquid and other foods with freezing points, medicine can be liquid and other medicines with freezing points, cosmetics and skin care products can be lotions, essences and other skin care products with freezing points. The freezing points of different types of items are different. For example, the freezing point of meat is 0.5℃ higher than that of fish. The freezing point refers to the freezing temperature of the item.

[0068] The cooling speed change rate indicates the degree of change of the cooling speed of the items refrigerated in the refrigeration equipment. The higher the cooling speed change rate, the higher the degree of change of the cooling speed of the items in the refrigeration equipment. Conversely, the lower the cooling speed change rate, the lower the degree of change of the cooling speed of the items in the refrigeration equipment.

[0069] See also Figure 2 As shown, Figure 2 The horizontal axis is time, and the vertical axis is the temperature of the item. For example, if the item is meat, Figure 2 The temperature reduction curve of meat from 25°C to -18°C when the meat is refrigerated in a refrigeration device is shown, which mainly includes the first cooling stage, the second cooling stage and the third cooling stage.

[0070] The first cooling stage is a rapid cooling stage where the meat drops from 25℃ to -1℃. In the first cooling stage, the liquid in the meat has not yet changed to a solid state. Although the temperature of the meat drops faster in the first cooling stage, the rate of change of the cooling speed in the first cooling stage is lower. Figure 2 As shown in the figure, in the first cooling stage, the cooling rate of meat decreases steadily, and the derivatives of each point on the cooling curve in the first cooling stage are basically the same, so the cooling rate change rate in the first cooling stage is relatively low. For example, in the first cooling stage, the cooling time corresponding to the meat dropping from 20℃ to 15℃ is T1, and the cooling rate V of the meat dropping from 20℃ to 15℃ is A =(20-15) / T1; and the cooling time corresponding to the meat dropping from 10℃ to 5℃ is also T1, and the cooling speed V of the meat dropping from 10℃ to 5℃ B =(10-5) / T1, cooling rate V A Subtract the cooling rate V B The rate of change of the cooling speed between is equal to 0, so the rate of change of the cooling speed in the first cooling stage is relatively low, and it approaches 0.

[0071] The second cooling stage is when the meat temperature drops from -1°C to -5°C. During the second cooling stage, the liquid in the meat changes from liquid to solid, and the liquid in the meat is converted into ice crystals. The meat temperature tends to remain unchanged during the second cooling stage, and the rate of change of the cooling speed during the second cooling stage also tends to 0.

[0072] The third cooling stage is the stage where the meat temperature drops from -5℃ to -18℃. In the third cooling stage, the liquid in the meat becomes solid. Although the temperature of the meat drops more slowly in the third cooling stage than in the first cooling stage, please refer to Figure 2 As shown, the cooling curve in the third cooling stage does not decrease smoothly, but fluctuates up and down during the decreasing process. The derivatives of each point on the cooling curve in the third cooling stage will be different, so the cooling speed change rate in the third cooling stage is relatively large.

[0073] In the above three cooling stages, the temperature corresponding to the start time of the second cooling stage can be the freezing point / freezing temperature of the meat. Figure 2 It can be seen that the change rate of the cooling speed of the object in the first cooling stage and the second cooling stage is relatively small, but the change rate of the cooling speed of the object in the third cooling stage is relatively large.

[0074] The preset temperature is the temperature at which the liquid in the item may change phase into a solid, and is also the critical temperature between the first cooling stage and the second cooling stage. For example, the preset temperature may be 0°C. If the temperature is higher than 0°C, the item is considered to be in the first cooling stage, at which the liquid in the item has not yet changed phase into a solid; if the temperature is lower than 0°C, the item is considered to be in the second cooling stage, at which the liquid in the item may change phase into a solid.

[0075] When the temperature of the items in the refrigeration equipment is lower than the preset temperature, it can be considered that the temperature of the items has gone through the first cooling stage, and then the cooling speed change rate of the items is judged to determine whether the temperature of the items has reached the second cooling stage.

[0076] In step S20, when the temperature drop rate change rate is less than a preset value, the freezing temperature of the object is obtained according to the target temperature drop rate of the object.

[0077] When the temperature of the object drops below the critical preset temperature between the first cooling stage and the second cooling stage, and the rate of change of the cooling speed of the object is less than the preset value, it means that the temperature of the object has gone through the first cooling stage and reached the second cooling stage. At this time, the target cooling speed of the object can be determined, and the freezing temperature of the object in the second cooling stage can be obtained based on the determined target cooling speed of the object.

[0078] The preset value can be any value between 0.3℃ / h and 0.5℃ / h. Taking the preset value of 0.3℃ / h as an example, when the cooling rate of the object is less than 0.3℃ / h, it is considered that the temperature of the object has reached the second cooling stage, and the object may reach the freezing temperature.

[0079] Understandably, see Figure 2 As shown, since the cooling speed change rate in the first cooling stage and the second cooling stage is small, when the cooling speed change rate of the object is less than the preset value, it is impossible to determine whether the object temperature is in the first cooling stage or the second cooling stage. Based on this, the present disclosure also adds an additional judgment condition that the object temperature is less than the preset temperature. When the object temperature is less than the preset temperature (for example, 0°C), it is determined that the object temperature has experienced the first cooling stage, thereby excluding the cooling speed change rate in the first cooling stage; then it is determined whether the cooling speed change rate of the object is less than the preset value. If it is less than the preset value, it is determined that the object temperature has reached the second cooling stage, and the object may reach the freezing temperature in the second cooling stage.

[0080] In addition, when judging whether the temperature of the object has reached the second cooling stage, a solution of comparing the temperature difference at two time points with a preset difference value can also be adopted, and whether the temperature of the object has reached the second cooling stage can be judged according to the temperature difference of the object at two time points. For example, if the temperature difference at two time points is greater than the preset difference value, it is considered that the object is in the first cooling stage or the third cooling stage which is not the second cooling stage; if the temperature difference at two time points is less than the preset difference value, it is considered that the object has reached the second cooling stage, and the object may reach the freezing temperature at this time.

[0081] However, this judgment method may result in judgment errors due to the following reasons: Figure 2 As shown, the temperature difference between any two time points in the first cooling stage is greater than the preset difference, the temperature difference between any two time points in the second cooling stage is less than the preset difference, and the cooling curve in the third cooling stage fluctuates up and down, resulting in the temperature difference between any two time points being greater than or less than the preset difference. It can be seen that when the temperature difference between two time points is less than the preset difference, the temperature of the object may be in the second cooling stage or in the third cooling stage. Since there is no freezing temperature of the object in the third cooling stage, if the target cooling rate in the third cooling stage is used to obtain the freezing temperature of the object, the accuracy of the obtained freezing temperature is low.

[0082] In order to improve the accuracy of the obtained freezing temperature of the object, the present disclosure adopts a scheme of comparing the rate of change of the cooling speed with the preset value, see Figure 2As shown, the cooling curve of the second cooling stage tends to be stable, and its cooling speed change rate is significantly smaller, while the cooling curve of the third cooling stage will fluctuate up and down, and the cooling speed of the third cooling stage varies, making its cooling speed change rate significantly larger. Therefore, when the present disclosure determines that the cooling speed change rate is less than the preset value, it can be determined that the temperature of the object is in the second cooling stage, and when the cooling speed change rate is greater than the preset value, it is determined that the temperature of the object is in the third cooling stage, so the influence of the third cooling stage can be screened out. Since the temperature of the object will reach the freezing temperature in the second cooling stage, using the target cooling speed in the second cooling stage to obtain the freezing temperature of the object will make the obtained freezing temperature of the object more accurate.

[0083] In step S30, the refrigeration temperature in the refrigeration equipment is adjusted to be higher than the freezing temperature.

[0084] After the freezing temperature of the object is obtained, the refrigeration temperature in the refrigeration equipment can be adjusted to be greater than the freezing temperature, thereby reducing the probability of the object freezing.

[0085] For example, if the item is meat, the freezing temperature of meat is between -1.1℃ and -2.2℃. If the freezing temperature of meat is determined to be -1.1℃, the refrigeration temperature of the refrigeration equipment can be adjusted to greater than -1.1℃, thereby preventing the refrigeration temperature in the refrigeration equipment from reaching the freezing temperature of meat -1.1℃, thereby reducing the probability of meat freezing.

[0086] For example, taking fish as an example, the freezing temperature of fish is usually between -0.8℃ and -1.5℃. If the freezing temperature of fish is determined to be -0.8℃, the refrigeration temperature of the refrigeration equipment can be adjusted to greater than -0.8℃, thereby preventing the refrigeration temperature in the refrigeration equipment from reaching the freezing temperature of fish -0.8℃, thereby reducing the probability of fish freezing.

[0087] Optionally, the refrigeration temperature in the refrigeration device can be adjusted to a target temperature, the target temperature is higher than the freezing temperature, and the difference between the target temperature and the freezing temperature is greater than a preset difference, that is, the sum of the freezing temperature and the preset difference is equal to the target temperature. The preset difference ranges from 0.3°C to 0.6°C.

[0088] Taking the preset difference of 0.3℃ as an example, if it is determined that the freezing temperature of the item is -0.8℃, the preset difference of 0.3℃ can be added to the freezing temperature to obtain a target temperature of -0.5℃. The refrigeration temperature in the refrigeration equipment can be adjusted to -0.5℃ to prevent the refrigeration temperature in the refrigeration equipment from reaching the freezing temperature of the item, thereby reducing the probability of the item freezing.

[0089] In the related art, an approximate freezing temperature range of food is obtained. For example, the freezing temperature range of meat is -1.1°C to -2.2°C. In this way, the refrigeration temperature in the refrigeration equipment is controlled to be higher than -1.1°C to -2.2°C. However, the freezing temperatures of different types of meat may be different. Following this unified control method may cause some meat to freeze, while the storage time of other meat is shorter, resulting in the preservation effect.

[0090] For example, see Figure 3 As shown, taking the freezing temperature of meat as -1.8°C as an example, the refrigeration temperature in the refrigeration equipment can be controlled to be higher than the freezing temperature of -1.8°C, for example, -1.7°C. The freezing temperature of beef among meats is -1.6°C. When the beef is placed in the refrigeration equipment, since the refrigeration temperature of the refrigeration equipment -1.7°C is lower than the freezing temperature of beef -1.6°C, the beef will freeze, and freezing will cause the color of the beef to turn brown, and the beef will lose a lot of juice after thawing, which will also make the beef difficult to cut; the freezing point of pork among meats is -2.0°C. When the pork is placed in the refrigeration equipment, since the refrigeration temperature of the refrigeration equipment -1.7°C is much higher than the freezing temperature of pork -2.0°C, although the pork will not freeze, the refrigeration temperature of the refrigerated pork is relatively high, resulting in a shorter storage time for the pork and a worse preservation effect.

[0091] Through the technical solution proposed in the present invention, for different items, when the temperature of the item is lower than the preset temperature and the rate of change of the cooling speed of the item is lower than the preset value, the freezing temperature of the item can be obtained according to the target cooling speed of the item, and the refrigeration temperature of the refrigeration equipment can be adjusted to be higher than the freezing temperature.

[0092] It can be seen that the present invention will obtain different freezing temperatures for different items, and then adaptively adjust the refrigeration temperature of the refrigeration equipment to be slightly higher than the freezing temperature of the items. While ensuring that the items are not frozen as much as possible, it also extends the storage time of the items and ensures the freshness of the items.

[0093] For example, taking the item as beef, the present disclosure will determine that the freezing temperature of the beef is -1.6°C based on the target cooling rate of the beef, so the refrigeration temperature of the refrigeration equipment is adjusted to -1.3°C. On the one hand, the refrigeration temperature is relatively low, which makes the beef last longer and the preservation effect is better; on the other hand, the refrigeration temperature is above the freezing temperature of the beef, which reduces the occurrence of beef freezing, and also reduces the problems caused by beef freezing, such as browning, juice loss after thawing, and difficulty in cutting beef.

[0094] Figure 4 is an exemplary embodiment involved in the above step S10, which is used to explain an exemplary solution for obtaining the rate of change of the cooling speed of the object, including the following steps:

[0095] In step S11, the maximum cooling rate and the minimum cooling rate of the object during the cooling process are determined.

[0096] Optionally, one of the exemplary schemes for determining the maximum cooling rate and the minimum cooling rate of the object during the cooling process includes: determining multiple cooling rates of the object during the cooling process, and selecting the maximum cooling rate and the minimum cooling rate from the multiple cooling rates.

[0097] For example, the interval duration can be obtained by subtracting the second adjacent time point from the first adjacent time point during the cooling process of the item; the temperature difference can be obtained by subtracting the second adjacent temperature from the first adjacent temperature during the cooling process of the item; and then the temperature difference is divided by the interval duration to obtain the cooling speed of the item; and then the maximum cooling speed and the minimum cooling speed can be screened out from the multiple cooling speeds of the item.

[0098] Optionally, the second exemplary solution for determining the maximum cooling rate and the minimum cooling rate of the object during the cooling process includes the following sub-steps:

[0099] In sub-step A1, the cooling process of the object is divided into at least two cooling intervals.

[0100] After the temperature of the object drops to the preset temperature, the temperature of the object after dropping to the preset temperature can be divided into at least two temperature reduction intervals, and the temperature reduction time of each of the at least two temperature reduction intervals is equal.

[0101] For example, see Figure 5 As shown, the cooling process of the article can be divided into four cooling intervals, namely, S1, S2, S3 and S4, and the cooling time of these four cooling intervals is equal.

[0102] In sub-step A2, for each of the at least two cooling intervals, a cooling speed corresponding to each cooling interval is determined.

[0103] For each cooling interval, the temperature difference between the end temperature of the cooling interval and the start temperature of the cooling interval can be determined first; then the cooling speed corresponding to the cooling interval can be obtained according to the temperature difference and the cooling time corresponding to the cooling interval.

[0104] For example, the cooling speed corresponding to the cooling range can be calculated by the following formula:

[0105] V x =(T dsx-end -T dsx-start ) / t (1)

[0106] In formula (1), V x is the cooling speed corresponding to the cooling interval; Tdsx-end is the end temperature of the cooling interval; T dsx-start is the starting temperature of the cooling interval; t is the cooling time corresponding to the cooling interval.

[0107] From formula (1), we can see that the temperature difference can be obtained by subtracting the starting temperature of the cooling interval from the ending temperature of the cooling interval; and then the temperature difference can be divided by the cooling time to obtain the cooling speed corresponding to the cooling interval. The cooling speed corresponding to the cooling interval indicates the average cooling speed of the item within the cooling time.

[0108] In sub-step A3, the maximum cooling rate and the minimum cooling rate are selected from the cooling rates corresponding to the at least two cooling intervals.

[0109] When the number of the at least two cooling intervals is two, the maximum cooling rate is the larger cooling rate of the two cooling intervals, and the minimum cooling rate is the smaller cooling rate of the two cooling intervals.

[0110] When the number of at least two cooling intervals is three or more, the maximum cooling rate is the maximum cooling rate among the cooling rates of the three or more cooling intervals; the minimum cooling rate is the minimum cooling rate among the cooling rates of the three or more cooling intervals. Taking the at least two cooling intervals including four cooling intervals S1, S2, S3 and S4 as an example, the maximum cooling rate and the minimum cooling rate can be screened out from the cooling rates corresponding to the four cooling intervals.

[0111] In step S12, the temperature reduction rate change rate is obtained according to the maximum temperature reduction rate and the minimum temperature reduction rate.

[0112] Optionally, the temperature reduction rate change rate may be obtained by subtracting the minimum temperature reduction rate from the maximum temperature reduction rate among the temperature reduction rates in the at least two temperature reduction intervals.

[0113] See also Figure 4 As shown, taking at least two cooling intervals including S1, S2, S3 and S4 as an example, the maximum cooling rate in the four cooling intervals can be subtracted from the minimum cooling rate to obtain the cooling rate change rate. After obtaining the cooling rate change rate, the relationship between the cooling rate change rate and the preset value is determined to determine whether the temperature of the object has reached the stage where freezing will occur. The calculation formula is as follows:

[0114] max(v1~v4)-min(v1~v4)<v0 (2)

[0115] In formula (2), max(v1~v4) is the maximum cooling rate among the four cooling intervals of S1, S2, S3 and S4; min(v1~v4) is the minimum cooling rate among the four cooling intervals of S1, S2, S3 and S4; v0 is a preset value.

[0116] Optionally, when the cooling speed change rate between the maximum cooling speed and the minimum cooling speed of at least two cooling intervals is greater than or equal to a preset value, the first cooling interval with an earlier time point in the at least two cooling intervals is eliminated and a target cooling interval is added to form at least two new cooling intervals, and the starting time point of the target cooling interval is later than the ending time point of the last cooling interval with a later time point in the at least two cooling intervals; then the cooling speed of the newly added target cooling interval is calculated, and the maximum cooling speed and the minimum cooling speed are selected from the cooling speeds of the new at least two cooling intervals, and then the cooling speed change rate between the maximum cooling speed and the minimum cooling speed is determined, and when the cooling speed change rate is greater than or equal to the preset value, the above steps are repeated until the cooling speed change rate is less than the preset value.

[0117] For example, taking at least two cooling intervals including S1, S2, S3 and S4, which are arranged in chronological order, as an example, when the cooling speed change rate between the maximum cooling speed and the minimum cooling speed among the cooling speeds of the four cooling intervals is greater than or equal to the preset value, the cooling interval S1 is eliminated, and then the cooling interval S5 is obtained, and the cooling speed change rate between the maximum cooling speed and the minimum cooling speed among the cooling speeds of the four cooling intervals S2, S3, S4 and S5 is recalculated. When the cooling speed change rate is still greater than or equal to the preset value, the cooling interval S6 is continued to be added to eliminate the cooling interval S2 until the cooling speed change rate is less than the preset value.

[0118] It is understandable that the more continuous cooling intervals involved in calculating the cooling speed change rate, the more accurate the cooling speed change rate will be. The difference between the cooling time of at least three continuous cooling intervals and the cooling time of the second cooling stage is less than the preset difference, indicating that the cooling time of at least three continuous cooling intervals is close to the cooling time of the second cooling stage.

[0119] See also Figure 5As shown, for example, taking two cooling intervals to participate in the calculation of the cooling speed change rate as an example, assuming that the two cooling intervals are S1 and S2, the starting time point of the cooling interval S1 is 18:00, and the end time point of the cooling interval S1 is 18:20; the starting time point of the cooling interval S2 is 18:30, and the end time point of the cooling interval S2 is 18:40, then the cooling speed change rate is the speed change rate within the time period of 18:00-18:40, which reflects the 40mi from 18:00 to 18:40. The second cooling stage in which the object forms crystals will last for a long time. In addition to the cooling process within 40 minutes from 18:00 to 18:40, there may be multiple cooling processes such as S3, S4, S5, and S6. Therefore, calculating the cooling rate change rate within 40 minutes from 18:00 to 18:40 alone can only represent the cooling rate change rate of the short-term cooling stage, but cannot represent the cooling rate change rate of the long-term second cooling stage. The credibility of the cooling rate change rate obtained is low.

[0120] For another example, taking two cooling intervals participating in the calculation of the cooling speed change rate as an example, assuming that the two cooling intervals are S1 and S4, then the obtained cooling speed change rate is the degree of change of the cooling speed between the cooling interval S1 and the cooling interval S4. If the cooling rates of the cooling interval S1 and the cooling interval S4 are 1.2℃ / h and 1.3℃ / h respectively, and the cooling rates of the cooling interval S2 and the cooling interval S3 are 2.0℃ / h and 2.5℃ / h respectively, then the calculated cooling speed change rate between the cooling interval S1 and the cooling interval S4 is 0.1℃ / h, which does not take into account the larger cooling rates of the cooling intervals S2 and S3, resulting in a smaller cooling speed change rate in the end, and it is considered that the degree of change of the cooling speed in the time period from the cooling interval S1 to the cooling interval S4 is smaller.

[0121] For another example, taking four cooling intervals involved in calculating the cooling speed change rate as an example, assuming that the four cooling intervals are S1, S2, S3, and S4, and the cooling speeds of the four cooling intervals are 1.2℃ / h, 2.0℃ / h, 2.5℃ / h, and 1.3℃ / h, respectively, then the maximum cooling speed in the four cooling intervals is 2.5℃ / h, and the minimum cooling speed is 1.2℃ / h. The cooling speed change rate in the cooling stage corresponding to the four cooling intervals is 1.3℃ / h, which is relatively large, indicating that the cooling speed in this cooling stage has a large degree of change, and the temperature of the object has not yet reached the second cooling stage where the cooling speed change is smaller.

[0122] It can be seen from the above three examples that when the number of cooling intervals is two, the cooling rate change rate between two adjacent cooling intervals is the cooling rate change rate in the short cooling stage, which is insufficient to reflect the cooling rate change rate in the long second cooling stage; the cooling rate change rate between two non-adjacent cooling intervals reflects the cooling rate change rate between the two cooling intervals, which ignores the intermediate cooling interval between the two non-adjacent cooling intervals, resulting in the final cooling rate change rate being insufficient to reflect the cooling rate change rate of the entire second cooling stage.

[0123] When the number of cooling intervals is four, the obtained cooling speed change rate is the cooling speed change rate between the maximum cooling speed and the minimum cooling speed in the four cooling intervals. Since the time period corresponding to the four consecutive cooling intervals is longer, the cooling speed change rate of the four consecutive cooling intervals can represent the cooling speed change rate of the second cooling stage with a longer time period; and the four consecutive cooling intervals do not ignore the intermediate cooling interval, so the obtained cooling speed change rate can reflect the cooling speed change rate of the entire second cooling stage.

[0124] Optionally, there is a preset time interval between two adjacent cooling intervals in the at least two cooling intervals.

[0125] See also Figure 5 As shown, there is a preset time interval between the cooling interval S1 and the cooling interval S2; there is also a preset time interval between the cooling interval S2 and the cooling interval S3; there is also a preset time interval between the cooling interval S3 and the cooling interval S4.

[0126] By configuring a preset duration between two adjacent cooling intervals, the cooling duration between the starting time points of at least two cooling intervals and the end time points of at least two cooling intervals will be increased, thereby determining the cooling speed change rate within a longer cooling time, and determining whether the temperature change trend is stable within a longer cooling time, so that the obtained cooling speed change rate can better reflect the cooling speed change rate of the entire second cooling stage.

[0127] Figure 6 It is an exemplary embodiment involved in the above step S20, which is used to explain an exemplary scheme for obtaining the freezing temperature based on the maximum cooling rate and the minimum cooling rate.

[0128] In one exemplary solution, when the number of the cooling intervals is two, the target cooling rate can be obtained according to the maximum cooling rate and the minimum cooling rate; and the freezing temperature can be obtained according to the target cooling rate.

[0129] When there are two cooling intervals, the larger cooling rate of the two cooling intervals can be used as the maximum cooling rate, and the smaller cooling rate of the two cooling intervals can be used as the minimum cooling rate; then the target cooling rate is obtained based on the maximum cooling rate and the minimum cooling rate; the freezing temperature is obtained based on the target cooling rate and the cooling time corresponding to the cooling interval.

[0130] Among them, the average value of the maximum cooling rate and the minimum cooling rate can be used as the target cooling rate.

[0131] The product of the target cooling speed and the cooling time corresponding to the cooling interval may be used as the freezing temperature.

[0132] It can be understood that the cooling time corresponding to the two cooling intervals is the same, and the product of the average target cooling speed of the two cooling intervals and the cooling time corresponding to the cooling interval represents the average temperature of a single cooling interval, and also represents the average temperature of the cooling process corresponding to the two cooling intervals.

[0133] See also Figure 3 As shown, the cooling interval when the item reaches the second cooling stage is relatively stable, and the average temperature of the second cooling stage can represent the freezing temperature of the item. Since the cooling rate change rate between the maximum cooling rate and the minimum cooling rate in the two cooling intervals is less than the preset value, it means that the cooling curves of the item in the two cooling intervals are relatively stable. Therefore, the average temperature of the two cooling intervals can be used as the freezing temperature of the item.

[0134] In a second exemplary solution, when the number of cooling intervals is three or more, the target cooling rate can be obtained according to an intermediate cooling rate between the maximum cooling rate and the minimum cooling rate; and the freezing temperature can be obtained according to the target cooling rate.

[0135] When there are three cooling intervals, the middle cooling rate of the three cooling intervals excluding the maximum cooling rate and the minimum cooling rate can be used as the target cooling rate; and the freezing temperature is obtained according to the target cooling rate and the cooling time corresponding to the cooling interval.

[0136] When the number of cooling intervals is four or more, the average of the intermediate cooling rates of the four cooling intervals excluding the maximum cooling rate and the minimum cooling rate can be used as the target cooling rate; and the freezing temperature can be obtained based on the target cooling rate and the cooling time corresponding to the cooling interval.

[0137] It can be understood that the cooling time corresponding to at least three cooling intervals is the same, and the product of the average target cooling speed of at least three cooling intervals and the cooling time corresponding to the cooling interval represents the average temperature of a single cooling interval, and also represents the average temperature during the cooling process corresponding to at least three cooling intervals.

[0138] See also Figure 2 As shown, the cooling interval when the item reaches the second cooling stage is relatively stable, and the average temperature of the second cooling stage can represent the freezing temperature of the item. Since the cooling rate change rate between the maximum cooling rate and the minimum cooling rate in at least three cooling intervals is less than the preset value, it means that the cooling curve of the item in these at least three cooling intervals is relatively stable. Therefore, the average temperature of at least three cooling intervals can be used as the freezing temperature of the item.

[0139] Moreover, since there are maximum cooling rates and minimum cooling rates in more than three cooling intervals, and the freezing temperature in the second cooling stage tends to be stable, the maximum cooling rate and the minimum cooling rate will interfere with the calculation of the freezing temperature, so the maximum cooling rate and the minimum cooling rate can be eliminated, and the freezing temperature is obtained based on the intermediate cooling rate between the maximum cooling rate and the minimum cooling rate. The obtained freezing temperature has higher accuracy.

[0140] Through the above technical scheme, the stable temperature change trend in the second cooling stage is first utilized. When the cooling rate change rate between the maximum cooling rate and the minimum cooling rate in the current cooling process is less than a preset value, it is considered that the current cooling process is relatively stable and close to the cooling trend of the second cooling stage, so as to calculate the subsequent freezing temperature; and then, the characteristic that the freezing temperature in the second cooling stage tends to remain unchanged is utilized, and the average target cooling rate of the current cooling process is used as the freezing temperature, so that the obtained freezing temperature has higher credibility and accuracy.

[0141] Figure 7 The disclosure relates to an exemplary embodiment, which is used to explain an exemplary scheme for controlling the refrigeration temperature drop in a refrigeration device, comprising the following steps:

[0142] In step S40, the refrigeration temperature in the refrigeration device is controlled to decrease with the goal of being lower than the preset temperature.

[0143] The preset temperature is the dividing temperature between solid and non-solid state for most objects, and is also the starting temperature of the second cooling stage. The object will reach the freezing temperature only when its temperature is below the preset temperature.

[0144] When controlling the refrigeration temperature of the refrigeration equipment, the refrigeration temperature in the refrigeration equipment can be controlled by taking a temperature lower than a preset temperature as a target, so that the refrigeration temperature in the refrigeration equipment can quickly reach the preset temperature. The temperature lower than the preset temperature is within the temperature range [-3°C, -5°C].

[0145] For example, if the preset temperature is 0℃, the refrigeration temperature of the refrigeration equipment can be controlled to be 0℃ as the target, and the refrigeration temperature in the refrigeration equipment can be controlled to drop. In this way, the refrigeration temperature of the refrigeration equipment reaches 0℃ slowly. If the refrigeration temperature in the refrigeration equipment is controlled to drop to a temperature -3℃ lower than the preset temperature, the refrigeration temperature of the refrigeration equipment will reach 0℃ faster.

[0146] Optionally, during the process of the refrigeration temperature in the refrigeration equipment decreasing, the temperature of the object is monitored; when the temperature of the object is lower than the preset temperature, the rate of change of the cooling speed after the temperature of the object is lower than the preset temperature is determined.

[0147] Among them, the refrigeration temperature in the refrigeration equipment can be adjusted by the adjustment device, and in the process of adjusting the refrigeration temperature in the refrigeration equipment to drop, the temperature of the items in the refrigeration equipment is monitored by the detection device, and when the temperature of the item is lower than the preset temperature, the rate of change of the cooling speed after the temperature of the item is lower than the preset temperature is determined.

[0148] See also Figure 2 As shown, the starting temperature of the second cooling stage is less than or equal to 0°C. Taking the preset temperature of 0°C as an example, the refrigeration temperature in the refrigeration equipment can be adjusted to 0°C by the adjusting device, and in the process of the refrigeration temperature in the refrigeration equipment dropping to 0°C, the temperature of the items in the refrigeration equipment can be monitored by the detection device; if the temperature of the item is less than 0°C, it means that the item may reach the second cooling stage. At this time, the temperature of the item after it is less than the preset temperature is obtained, and then the cooling speed change rate is obtained based on the temperature of the item after it is less than the preset temperature.

[0149] Optionally, the temperature of the object may be monitored after the refrigeration temperature in the refrigeration equipment drops to a preset temperature; when the temperature of the object is lower than the preset temperature, the rate of change of the cooling speed after the temperature of the object is lower than the preset temperature is determined.

[0150] Through the above technical solution, since the object will only condense and reach the freezing temperature when the temperature of the object is lower than the preset temperature, the cooling rate of change and the freezing temperature of the object can be calculated when the temperature of the object is lower than the preset temperature, without having to calculate the cooling rate of change of the object in real time, thereby reducing the amount of calculation brought by real-time calculation.

[0151] Fig. 9 and Fig.10 is a schematic diagram of a refrigeration device eliminated according to an exemplary embodiment, the refrigeration device may be a refrigeration box in a refrigerator; the refrigeration device includes a control device ( Fig. 9 and Fig.10 ) and the adjusting device 5.

[0152] The control device is used to determine the rate of change of the cooling speed of the items in the refrigeration device; and when the rate of change of the cooling speed is less than a preset value, the freezing temperature of the items is obtained according to the target cooling speed of the items.

[0153] The regulating device 5 is used to regulate the refrigeration temperature in the refrigeration device to be higher than the freezing temperature.

[0154] See also Fig. 9 and Fig.10 As shown, the refrigeration device includes a temperature-changing box 1, a drawer 2, an air inlet 3 and an air outlet 4. The drawer 2 is slidably arranged in the temperature-changing box 1, and the drawer 2 is used to contain items; the air inlet 3 is provided on the temperature-changing box 1, and is used to transmit cold air to the drawer 2; the air outlet 4 is provided on the temperature-changing box 1, and is used to discharge the cold air in the drawer 2; the regulating device 5 is provided on the top of the temperature-changing box 1, and is used to adjust the refrigeration temperature in the drawer 2 to be higher than the freezing temperature.

[0155] Optionally, the air inlet 3 and the air outlet 4 are both connected to the air duct in the refrigerator, and the cold air enters the drawer 2 through the air inlet 3 and then returns to the evaporator through the air outlet 4. The regulating device 5 can adjust the refrigeration temperature in the drawer 2 by adjusting the temperature of the cold air entering the air inlet 3.

[0156] Optionally, see Fig.10 As shown, the regulating device 5 is arranged at the inner top of the temperature-changing box 1, and is used to monitor and control the refrigeration temperature in the drawer 2. The regulating device 5 can be a top sensor.

[0157] Optionally, see Fig.10 As shown, the detection device 6 is arranged at the inner bottom of the temperature-changing box 1, and is used to monitor the temperature of the items placed in the drawer 2. The detection device 6 can be a bottom sensor. For example, the detection device 6 is used to monitor the temperature of the items in the drawer 2 when the adjustment device 5 controls the refrigeration temperature in the drawer 2 to drop, or after the refrigeration temperature in the drawer 2 drops to a preset temperature.

[0158] Among them, see Fig.10As shown, a cooling component 7 is provided at the bottom of the drawer 2, and a detection device 6 is provided at the inner bottom of the temperature-changing box 1 and below the cooling component 7, for monitoring the temperature of items placed on the cooling component 7. The cooling component 7 may be a cooling tray, which may be part or all of the bottom of the drawer 2. The cooling tray is made of metal, and the cooling tray and the detection device 6 are fitted together by snaps, so that the temperature monitored by the detection device 6 is the temperature of the cooling tray. When an item is placed on the cooling tray, the cooling tray transmits the temperature of the item, so that the temperature of the cooling tray monitored by the detection device 6 is the temperature of the item.

[0159] In some scenarios, taking the item being meat as an example, after the meat is placed on the cooling component 7 of the drawer 2, the adjusting device 5 monitors the refrigerated temperature in the drawer 2 and lowers the refrigerated temperature in the drawer 2 to a preset temperature, and the detecting device 6 monitors the temperature of the meat on the cooling component 7. When the temperature of the meat reaches the preset temperature, the detecting device 6 transmits the subsequent meat temperature to the control device in real time, and the control device obtains the cooling speed change rate of the meat based on the received meat temperature; when the cooling speed change rate is less than the preset value, the freezing temperature of the meat is determined; the control device then sends the freezing temperature to the adjusting device 5, and the adjusting device 5 adjusts the refrigerated temperature in the drawer 2 to be higher than the freezing temperature.

[0160] Through the above technical scheme, the refrigeration temperature can be monitored and controlled by the adjustment device 5, and the temperature of the items in the drawer 2 can be monitored by the detection device 6. The two coordinate with each other to obtain the freezing temperature of the items, and adjust the refrigeration temperature in the drawer 2 to be higher than the freezing temperature, thereby reducing the probability of freezing of the items.

[0161] It is understandable that different types of items have different freezing temperatures (for example, pork and fish have different freezing temperatures), and the freezing temperatures of the same item are also different (for example, fat pork and lean pork have different freezing temperatures). When the items placed in drawer 2 are different, the freezing temperature of each item can be obtained through the above scheme, so that the refrigeration temperature in drawer 2 can be adaptively adjusted to above the freezing temperature of the item, thereby reducing the probability of freezing of the item.

[0162] Of course, if multiple items need to be refrigerated at the same time, at least one partition can be set inside the drawer 2 to divide the drawer 2 into multiple different storage spaces. In this way, different storage spaces can store different items, and the freezing temperatures of the items in the multiple storage spaces can be identified separately, and then the refrigeration temperatures of the multiple storage spaces can be adjusted to above their respective freezing temperatures, thereby reducing the freezing probability of the items stored in the multiple storage spaces.

[0163] Fig.11is a block diagram of a control device for a refrigeration device according to an exemplary embodiment. The control device for the refrigeration device can be used to implement the steps of the control method for the refrigeration device proposed above. Fig.11 The control device of the refrigeration equipment includes: a determination module 1120, a calculation module 1130 and an adjustment module 1140.

[0164] The determination module 1120 is configured to determine a rate of change of a cooling speed of the object when the temperature of the object in the refrigeration device is lower than a preset temperature;

[0165] The calculation module 1130 is configured to obtain the freezing temperature of the object according to the target cooling speed of the object when the cooling speed change rate is less than a preset value;

[0166] The adjustment module 1140 is configured to adjust the refrigeration temperature in the refrigeration equipment to be higher than the freezing temperature.

[0167] Optionally, the determination module 1120 is further configured to determine a maximum cooling rate and a minimum cooling rate of the object during the cooling process; and obtain the cooling rate change rate according to the maximum cooling rate and the minimum cooling rate.

[0168] Optionally, the determination module 1120 is also configured to divide the cooling process of the article into at least two cooling intervals; for each of the at least two cooling intervals, determine the cooling speed corresponding to each cooling interval; and select the maximum cooling speed and the minimum cooling speed from the cooling speeds corresponding to the at least two cooling intervals.

[0169] Optionally, the calculation module 1130 is further configured to obtain the target cooling rate according to the maximum cooling rate and the minimum cooling rate; and obtain the freezing temperature according to the target cooling rate.

[0170] Optionally, the calculation module 1130 is further configured to obtain the target cooling rate according to an intermediate cooling rate between the maximum cooling rate and the minimum cooling rate; and obtain the freezing temperature according to the target cooling rate.

[0171] Optionally, the calculation module 1130 is further configured to obtain the freezing temperature according to the target cooling speed and the cooling time corresponding to the cooling interval.

[0172] Optionally, there is a preset time interval between two adjacent cooling intervals in the at least two cooling intervals.

[0173] Optionally, the control device of the refrigeration equipment includes:

[0174] The control module is configured to control the refrigeration temperature in the refrigeration device to drop to a temperature lower than the preset temperature.

[0175] Optionally, the control module is further configured to monitor the temperature of the object during the process of the refrigeration temperature in the refrigeration equipment decreasing; and when the temperature of the object is lower than the preset temperature, determine the rate of change of the cooling speed after the temperature of the object is lower than the preset temperature.

[0176] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0177] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon, and when the program instructions are executed by a processor, the steps of the control method of the refrigeration equipment provided by the present disclosure are implemented.

[0178] Fig.12 1 is a block diagram of a control device 1200 for a refrigeration device according to an exemplary embodiment. For example, the device 1200 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0179] Reference Fig.12 , the device 1200 may include one or more of the following components: a processing component 1202 , a memory 1204 , a power component 1206 , a multimedia component 1208 , an audio component 1210 , an input / output interface 1212 , a sensor component 1214 , and a communication component 1216 .

[0180] The processing component 1202 generally controls the overall operation of the device 1200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1202 may include one or more processors 1220 to execute instructions to complete all or part of the steps of the control method of the refrigeration device described above. In addition, the processing component 1202 may include one or more modules to facilitate the interaction between the processing component 1202 and other components. For example, the processing component 1202 may include a multimedia module to facilitate the interaction between the multimedia component 1208 and the processing component 1202.

[0181] The memory 1204 is configured to store various types of data to support the operation of the device 1200. Examples of such data include instructions for any application or method operating on the device 1200, contact data, phone book data, messages, pictures, videos, etc. The memory 1204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0182] The power supply component 1206 provides power to the various components of the device 1200. The power supply component 1206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 1200.

[0183] The multimedia component 1208 includes a screen that provides an output interface between the device 1200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1208 includes a front camera and / or a rear camera. When the device 1200 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0184] The audio component 1210 is configured to output and / or input audio signals. For example, the audio component 1210 includes a microphone (MIC), and when the device 1200 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1204 or sent via the communication component 1216. In some embodiments, the audio component 1210 also includes a speaker for outputting audio signals.

[0185] The input / output interface 1212 provides an interface between the processing component 1202 and the peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0186] The sensor assembly 1214 includes one or more sensors for providing various aspects of the status assessment of the device 1200. For example, the sensor assembly 1214 can detect the open / closed state of the device 1200, the relative positioning of components, such as the display and keypad of the device 1200, the sensor assembly 1214 can also detect the position change of the device 1200 or a component of the device 1200, the presence or absence of user contact with the device 1200, the orientation or acceleration / deceleration of the device 1200, and the temperature change of the device 1200. The sensor assembly 1214 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1214 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0187] The communication component 1216 is configured to facilitate wired or wireless communication between the device 1200 and other devices. The device 1200 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1216 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0188] In an exemplary embodiment, the device 1200 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned control method of the refrigeration equipment.

[0189] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1204 including instructions, and the instructions can be executed by a processor 1220 of the apparatus 1200 to complete the control method of the refrigeration device. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0190] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program executable by a programmable device. The computer program has a code portion for executing the above-mentioned control method of the refrigeration device when executed by the programmable device.

[0191] Some embodiments of the present disclosure also provide a chip system, such as Fig.13 As shown, the chip system includes at least one processor 1301 and at least one interface circuit 1302. The processor 1301 and the interface circuit 1302 can be interconnected through lines. For example, the interface circuit 1302 can be used to receive signals from other devices (such as the memory of an electronic device). For another example, the interface circuit 1302 can be used to send signals to other devices (such as the processor 1301). Exemplarily, the interface circuit 1302 can read the instructions stored in the memory and send the instructions to the processor 1301. When the instructions are executed by the processor 1301, the control device of the refrigeration equipment can perform the various steps in the above embodiments. Of course, the chip system can also include other discrete devices, and some embodiments of the present disclosure do not specifically limit this.

[0192] In some embodiments of the present disclosure, the interface circuit 1302 can obtain data, program instructions and / or information from the internal storage area of ​​the chip system; it can also obtain data, program instructions and / or information from outside the chip system.

[0193] Optionally, the chip system also includes a memory for storing necessary computer programs and data.

[0194] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions described for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present application.

Claims

1. A control method for refrigeration equipment, characterized in that: The method comprises: When the temperature of the object in the refrigeration device is lower than a preset temperature, determining a rate of change of a cooling speed of the object; When the rate of change of the cooling speed is less than a preset value, the freezing temperature of the object is obtained according to the target cooling speed of the object; The refrigeration temperature in the refrigeration equipment is adjusted to be above the freezing temperature.

2. The method according to claim 1, characterized in that The determining the rate of change of the cooling speed of the object comprises: Determine the maximum cooling rate and the minimum cooling rate of the item during the cooling process; The temperature reduction rate of change is obtained according to the maximum temperature reduction rate and the minimum temperature reduction rate.

3. The method according to claim 2, characterized in that The determining of the maximum cooling rate and the minimum cooling rate of the object during the cooling process includes: Dividing the cooling process of the article into at least two cooling intervals; For each of the at least two cooling intervals, determining a cooling speed corresponding to each cooling interval; The maximum cooling rate and the minimum cooling rate are selected from the cooling rates corresponding to the at least two cooling intervals.

4. The method according to claim 2, characterized in that: The step of obtaining the freezing temperature of the object according to the target cooling rate of the object comprises: Obtaining the target cooling rate according to the maximum cooling rate and the minimum cooling rate; The freezing temperature is obtained according to the target cooling rate.

5. The method according to claim 2, characterized in that: The step of obtaining the freezing temperature of the object according to the target cooling rate of the object comprises: Obtaining the target cooling rate according to an intermediate cooling rate between the maximum cooling rate and the minimum cooling rate; The freezing temperature is obtained according to the target cooling rate.

6. The method according to claim 3, characterized in that The step of obtaining the freezing temperature of the object according to the target cooling rate of the object comprises: The freezing temperature is obtained according to the target cooling speed and the cooling time corresponding to the cooling interval.

7. The method according to claim 3 or 6, characterized in that: There is a preset time interval between two adjacent cooling intervals in the at least two cooling intervals.

8. The method according to claim 1, characterized in that The method further comprises: The refrigeration temperature in the refrigeration equipment is controlled to decrease with the goal of being lower than the preset temperature.

9. The method according to claim 8, characterized in that When the temperature of the object in the refrigeration device is lower than a preset temperature, determining the rate of change of the cooling speed of the object includes: monitoring the temperature of the article while the refrigeration temperature in the refrigeration equipment is decreasing; When the temperature of the object is lower than the preset temperature, a rate of change of the temperature reduction speed after the temperature of the object is lower than the preset temperature is determined.

10. A refrigeration device, characterized in that: Including control devices and regulating devices; The control device is used to determine the rate of change of the cooling speed of the object in the refrigeration device; and when the rate of change of the cooling speed is less than a preset value, obtain the freezing temperature of the object according to the target cooling speed of the object; The regulating device is used to regulate the refrigeration temperature in the refrigeration equipment to be higher than the freezing temperature.

11. The refrigeration device according to claim 10, characterized in that: The refrigeration equipment also includes a temperature-changing box, a drawer, an air inlet and an air outlet; The drawer is slidably disposed in the temperature-changing box, and the drawer is used to accommodate the items; The air inlet is provided on the temperature-changing box and is used to transmit cold air into the drawer; The air outlet is provided on the temperature-changing box and is used to discharge the cold air in the drawer; The regulating device is arranged on the top of the temperature-changing box, and is used for regulating the refrigeration temperature in the drawer to be higher than the freezing temperature.

12. The refrigeration device according to claim 11, characterized in that: The refrigeration equipment also includes a detection device; The detection device is arranged at the bottom of the temperature-changing box, and is used to monitor the temperature of the items in the drawer when the regulating device controls the refrigeration temperature in the drawer to drop.

13. The refrigeration device according to claim 12, characterized in that: A cooling component is provided at the bottom of the drawer, and the detection device is provided below the cooling component to monitor the temperature of items placed on the cooling component.

14. A control device for a refrigeration device, characterized in that: Implement the steps of the method according to any one of claims 1 to 9.

15. A refrigerator, characterized in that: The refrigerator is equipped with the refrigeration device according to any one of claims 10 to 13 and / or is equipped with the control device of the refrigeration device according to claim 14.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

17. A computer program product, characterized in that The invention comprises a computer program, which implements the steps of the method according to any one of claims 1 to 9 when being executed by a processor.

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