Control method and device for preventing water from overflowing from a water pan, and refrigeration equipment

Abstract

The application provides a control method and device for preventing water overflow of a water receiving tray and a refrigeration equipment. The control method for preventing water overflow of the water receiving tray collects the defrosting water amount in the water receiving tray in real time through a water receiving tray water level collecting subunit, performs a hierarchical response according to the threshold interval in which the current water amount is located, and combines weather prediction data obtained through networking and user historical use habit data to predict the water amount value at the end of the next cycle before the end of the defrosting cycle, so as to adjust the operation parameters of the compressor and the condenser fan in the next defrosting cycle in advance to improve the evaporation efficiency of the defrosting water. In this way, the defrosting water evaporation capacity is improved without increasing the volume of the water receiving tray and affecting the refrigeration effect. Meanwhile, the control strategy in the application can adapt to the actual use habit of the user and the frosting condition under different seasonal climates, thereby avoiding water overflow of the water receiving tray caused by frequent opening and closing of the door by the user or extremely humid weather.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and more specifically, to a control method, device, and refrigeration equipment for preventing water overflow from a drip tray. Background Technology

[0002] When a frost-free refrigerator is cooling, the circulating air carries the water vapor from each compartment back to the finned evaporator, where it condenses into frost. Periodic defrosting is required to avoid excessive frost buildup that could affect heat exchange efficiency. The defrosting water generated flows into a drip tray in the compressor compartment and is collected. It is then evaporated through the evaporator coil at the bottom of the drip tray using the heat from the compressor exhaust and the circulating air from the condenser fan.

[0003] However, as the requirements for refrigerator volume ratio continue to increase, the volume of the compressor compartment is continuously compressed, the space for the drip tray and the arrangement of the evaporator coils are limited, and the risk of water overflow from the drip tray increases. Summary of the Invention

[0004] In order to overcome at least the above-mentioned deficiencies in the prior art, the present invention aims to provide a control method for preventing water overflow from a drip tray, which is applied to the control unit of a refrigeration equipment. The refrigeration equipment includes a freezer compartment, and further includes a refrigeration unit, a detection unit, and a control unit. The refrigeration unit includes a compressor, a condenser fan, and a drip tray. The detection unit includes a drip tray water level acquisition subunit, an ambient temperature and humidity acquisition subunit, a freezer compartment temperature acquisition subunit, and a door opening / closing signal acquisition subunit. The control unit is electrically connected to the refrigeration unit and the detection unit respectively. The method includes: Acquire at least two sets of historical defrosting data for refrigeration equipment. The historical defrosting data includes the average ambient temperature, average ambient humidity, average total number of door openings and closings, and average total door opening time for two consecutive defrosting cycles after the first defrosting cycle ends. Obtain a first water volume value from the water collection tray, wherein the first water volume value is the water volume in the water collection tray at the end of the current defrosting cycle of the refrigeration equipment; If the first water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold, then obtain the user door opening and closing data in the current defrosting cycle and the predicted environmental temperature and humidity values ​​within the next first preset time period. The user door opening and closing data includes the first total number of door openings and closings and the first total door opening and closing time value in the current defrosting cycle. The predicted environmental temperature and humidity values ​​include the predicted environmental temperature value and the predicted environmental humidity value within the next first preset time period. Determine the historical defrost data that is closest to the user door opening / closing data in the current defrost cycle and the predicted ambient temperature and humidity values ​​within the next first preset time period, and determine a second water volume value based on the closest historical defrost data, wherein the second water volume value is the predicted water volume in the water tray at the end of the next defrost cycle after the current defrost cycle. The operating parameters of the compressor and / or the condenser fan in the next defrosting cycle are updated based on the second water volume value.

[0005] In one possible implementation, the step of updating the operating parameters of the compressor and / or the condenser fan in the next defrost cycle based on the second water volume value includes: If the second water volume value is less than the first preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will remain unchanged in the next defrosting cycle. If the second water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold, then the operating parameters of the compressor and / or the condenser fan will be updated to the first adjustment mode in the next defrosting cycle. If the second water volume value is greater than or equal to the second preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will be updated to the second adjustment mode in the next defrosting cycle; and the first cooling rate value and the second cooling rate value of the freezer compartment will be obtained. According to the first preset relationship between the first cooling rate and the second cooling rate, the defrosting operation will be delayed when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle; wherein, the first cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under at least two non-open states in the current defrosting cycle, and the second cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under the second preset state when the refrigeration equipment meets the preset defrosting conditions in the current defrosting cycle.

[0006] In one possible implementation, the step of updating the operating parameters of the compressor and / or the condenser fan to the first adjustment mode in the next defrost cycle includes: Reduce the speed of the compressor to a first speed value; Increase the speed of the condenser fan to a second speed value; The shutdown point of the freezer compartment is reduced by a first temperature value.

[0007] In one possible implementation, the step of updating the operating parameters of the compressor and / or the condenser fan to the second adjustment mode in the next defrost cycle includes: Reduce the compressor speed to a third speed value; Increase the speed of the condenser fan to a fourth speed value; The shutdown point of the freezer compartment is reduced to a second temperature value.

[0008] In one possible implementation, the step of delaying the defrosting operation when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle, based on a first preset relationship between the first cooling rate and the second cooling rate, includes: If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the first preset threshold, then the delay time of the defrosting operation is determined to be the third preset time. If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the second preset threshold and less than the first preset threshold, then the delay time of the defrosting operation is determined to be the fourth preset time; wherein the fourth preset time is less than the third preset time. If the ratio of the second cooling rate to the first cooling rate is less than the second preset threshold, then the delay time of the defrosting operation is determined to be 0.

[0009] In one possible implementation, the method further includes: If the first water volume value is greater than or equal to the second preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will be updated to the third adjustment mode in the next defrosting cycle; and the first cooling rate value and the second cooling rate value of the freezer compartment will be obtained. According to the second preset relationship between the first cooling rate and the second cooling rate, the defrosting operation will be delayed when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle; wherein, the first cooling rate value is the average cooling rate of the freezer compartment in the second preset duration under at least two non-open states in the current defrosting cycle, and the second cooling rate value is the average cooling rate of the freezer compartment in the second preset duration under the second preset state when the refrigeration equipment meets the preset defrosting conditions in the current defrosting cycle. If the first water volume value is less than the first preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will remain unchanged in the next defrosting cycle.

[0010] In one possible implementation, the step of updating the operating parameters of the compressor and / or the condenser fan to the third adjustment mode in the next defrost cycle includes: Reduce the compressor speed to a third speed value; Increase the speed of the condenser fan to a fourth speed value; The shutdown point of the freezer compartment is reduced to a second temperature value.

[0011] In one possible implementation, the step of obtaining a first cooling rate value and a second cooling rate value of the freezer compartment, and delaying the defrosting operation when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle according to a second preset relationship between the first cooling rate and the second cooling rate includes: If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the third preset threshold, then the delay time of the defrosting operation is determined to be the fifth preset time. If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the fourth preset threshold and less than the third preset threshold, then the delay time of the defrosting operation is determined to be the sixth preset time; wherein the sixth preset time is less than the fifth preset time. If the ratio of the second cooling rate to the first cooling rate is less than the fourth preset threshold, then the delay time of the defrosting operation is determined to be 0.

[0012] The present invention also provides a control device for preventing water overflow from the drip tray, which is applied to the control unit of a refrigeration equipment. The refrigeration equipment includes a freezer compartment, and further includes a refrigeration unit, a detection unit, and a control unit. The refrigeration unit includes a compressor, a condenser fan, and a drip tray. The detection unit includes a drip tray water level acquisition subunit, an ambient temperature and humidity acquisition subunit, a freezer compartment temperature acquisition subunit, and a door opening / closing signal acquisition subunit. The control unit is electrically connected to the refrigeration unit and the detection unit respectively. The device includes: The first acquisition module is used to acquire at least two sets of historical defrosting data of refrigeration equipment. The historical defrosting data includes the average ambient temperature value, average ambient humidity value, average total number of door openings and closings, and average total door opening time value of two consecutive defrosting cycles after the first defrosting cycle ends. The second acquisition module is used to acquire the first water volume value of the water receiving tray, wherein the first water volume value is the water volume in the water receiving tray at the end of the current defrosting cycle of the refrigeration equipment; The third acquisition module is used to acquire user door opening and closing data in the current defrosting cycle and predicted environmental temperature and humidity values ​​within a first preset time period when the first water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold. The user door opening and closing data includes the first total number of door openings and closings and the first total time of door openings and closings in the current defrosting cycle. The predicted environmental temperature and humidity values ​​include the predicted environmental temperature and predicted environmental humidity values ​​within a first preset time period. The determination module is used to determine the historical defrosting data that is closest to the user door opening and closing data in the current defrosting cycle and the predicted environmental temperature and humidity values ​​within a first preset time period in the future, and to determine a second water volume value based on the closest historical defrosting data, wherein the second water volume value is the predicted water volume in the water receiving tray at the end of the next defrosting cycle after the current defrosting cycle. The parameter update module is used to update the operating parameters of the compressor and / or the condenser fan in the next defrosting cycle based on the second water volume value.

[0013] The present invention also provides a refrigeration device, including the aforementioned control device for preventing water overflow from the drip tray.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a control method, device, and refrigeration equipment to prevent water overflow from a drip tray. The control method uses a drip tray water level acquisition subunit to collect the defrost water volume in the drip tray in real time. Based on the current water volume's threshold range, it executes a graded response. Combining this with networked weather forecasts and user history data, it predicts the water volume at the end of the next defrost cycle before the current one ends. This allows for advance adjustment of the compressor and condenser fan's operating parameters in the next defrost cycle, improving defrost water evaporation efficiency. Thus, this solution improves defrost water evaporation capacity without increasing the drip tray volume or affecting refrigeration performance. Furthermore, the control strategy adapts to user habits and frost conditions in different seasons, preventing drip tray overflow caused by frequent door opening and closing or extreme humidity. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a control block diagram of the refrigeration equipment provided in this embodiment; Figure 2 This is a schematic diagram of the refrigeration equipment provided in this embodiment; Figure 3 This is a flowchart illustrating the control method for preventing water overflow from the drip tray provided in this embodiment; Figure 4 This is a schematic diagram of the control device for preventing water overflow from the drip tray provided in this embodiment.

[0017] Labels: Compressor-1; Condenser fan-2; Drain pan-3; Evaporator coil-4; Capillary tube-5; Refrigeration fan-6; Finned evaporator-7; Dryer filter-8; Anti-condensation pipe-9; Condenser-10; Water level sensor-11; Refrigeration unit-110; Detection unit-120; Control unit-130; Refrigeration equipment-100. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] It should be noted that, where there is no conflict, different features in the embodiments of the present invention can be combined with each other.

[0025] This invention provides a control method for preventing water overflow from a drip tray, applied to the control unit 130 of a refrigeration equipment 100. The refrigeration equipment 100 includes a freezer compartment, and further includes a refrigeration unit 110, a detection unit 120, and the control unit 130. The refrigeration unit 110 includes a compressor 1, a condenser fan 2, and a drip tray 3. The detection unit 120 includes a drip tray water level acquisition subunit, an ambient temperature and humidity acquisition subunit, a freezer compartment temperature acquisition subunit, and a door opening / closing signal acquisition subunit. Please refer to... Figure 1 The control unit 130 is electrically connected to the refrigeration unit 110 and the detection unit 120 respectively.

[0026] It should be noted that, in addition to the freezer room, the refrigeration equipment 100 may also include other rooms, such as a cold storage room and a variable temperature room.

[0027] Optionally, the refrigeration device 100 in this embodiment includes a frost-free refrigerator. When the frost-free refrigerator is cooling, please refer to... Figure 2 The circulating air carries water vapor from each compartment back to the finned evaporator 7, where it condenses into frost. Periodic defrosting is necessary to prevent excessive frost buildup from affecting heat exchange efficiency. Defrosting water flows into the drip tray 3 inside the compressor compartment and is collected. It then evaporates via the evaporator coil 4 at the bottom of the drip tray 3, utilizing the exhaust heat from the compressor 1 and the circulating air from the condenser fan 2. The refrigeration unit 110 also includes a capillary tube 5, a refrigeration fan 6, a finned evaporator 7, a dryer filter 8, an anti-condensation pipe 9, and a condenser 10, all working together to cool the refrigeration equipment 100.

[0028] Optionally, the control unit 130 is integrated on the mainboard of the refrigeration equipment 100 to coordinate the operation of the entire refrigeration equipment 100.

[0029] Please refer to Figure 3 The control methods to prevent water from overflowing from the drip tray include the following steps.

[0030] Step S11: Obtain at least two sets of historical defrosting data for the refrigeration equipment 100. The historical defrosting data includes the average ambient temperature, average ambient humidity, average total number of door openings and closings, and average total door opening time for two consecutive defrosting cycles after the first defrosting cycle ends.

[0031] Specifically, the ambient temperature and humidity values ​​during the defrosting cycle are acquired through the ambient temperature and humidity acquisition subunit, and the total number of times the user opens and closes the door and the total opening time are acquired through the door opening and closing signal acquisition subunit. The control unit 130 records and stores the above data acquired by the detection unit 120 in the storage module of the control unit 130. Each set of historical defrosting data corresponds to the average value of historical data from two complete defrosting cycles after the first defrosting.

[0032] Specifically, the average ambient temperature value is the average of multiple ambient temperature values ​​collected within two consecutive defrosting cycles; the average ambient humidity value is the average of multiple ambient humidity values ​​collected within two consecutive defrosting cycles; the average total number of door openings and closings is the average of the total number of door openings and closings within two consecutive defrosting cycles; and the average total door opening time is the average of the total door opening time within two consecutive defrosting cycles.

[0033] In this embodiment, since there is no frost layer or the frost layer is very thin on the evaporator surface when the first defrosting cycle begins after the refrigeration equipment 100 is powered on, the amount of defrosting water cannot represent the frost and water situation under normal operation of the refrigeration equipment 100. Therefore, historical defrosting data is collected from the end of the first defrosting cycle to ensure that the data used for subsequent matching and prediction is representative.

[0034] Step S12: Obtain the first water volume value of the water receiving pan 3, wherein the first water volume value is the water volume in the water receiving pan 3 at the end of the current defrosting cycle of the refrigeration equipment 100.

[0035] Optionally, the water level acquisition subunit of the water receiving tray includes a water level sensor 11. The water level sensor 11 can be any one of a photoelectric water level sensor, a capacitive water level sensor, or a float-type water level sensor.

[0036] Specifically, a water level acquisition subunit is installed inside the water receiving pan 3 to detect the defrost water level in the water receiving pan 3 in real time. The water level acquisition subunit sends the detected water level signal to the control unit 130, which calculates the defrost water volume in the water receiving pan 3 based on the bottom area and water level of the water receiving pan 3. The first water volume value is the actual amount of defrost water remaining in the water receiving pan 3 at the end of the current defrost cycle.

[0037] Step S13: If the first water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold, then obtain the user door opening and closing data in the current defrosting cycle and the predicted environmental temperature and humidity values ​​within the next first preset time period. The user door opening and closing data includes the total number of door openings and closings and the total time of door openings and closings in the current defrosting cycle. The predicted environmental temperature and humidity values ​​include the predicted environmental temperature and predicted environmental humidity values ​​within the next first preset time period.

[0038] Specifically, the first preset water volume threshold and the second preset water volume threshold can be set according to the total volume of the water receiving tray 3. The value range of the first preset water volume threshold can be between 50% and 70% of the total volume of the water receiving tray 3, and the value range of the second preset water volume threshold can be between 65% and 85% of the total volume of the water receiving tray 3.

[0039] In one optional embodiment, the first preset water volume threshold is 60% of the total volume of the water receiving tray 3, and the second preset water volume threshold is 75% of the total volume of the water receiving tray 3. For example, when the total volume of the water receiving tray 3 is 1L, the first preset water volume threshold is 0.6L, and the second preset water volume threshold is 0.75L.

[0040] In this embodiment, if the first water volume value is less than the first preset water volume threshold, it indicates that the current water volume is within a safe range, and no prediction or parameter adjustment is required; the control logic of the current control unit 130 can continue to operate. If the first water volume value is greater than or equal to the second preset water volume threshold, it indicates that the current water volume is already at a high level, and a strong adjustment mode needs to be executed directly without waiting for the prediction result. The prediction process is triggered only when the first water volume value is between the first preset water volume threshold and the second preset water volume threshold.

[0041] In this embodiment, the first preset duration can be selected as the next 24 hours after the end of the current defrosting cycle. The control unit 130 can connect to the weather data server via wired or wireless network to obtain the predicted ambient temperature and humidity values ​​for the next 24 hours. User door opening and closing data is collected by the door opening and closing signal acquisition subunit, which calculates the total number of door openings and closings and the total door opening time during the current defrosting cycle.

[0042] Step S14: Determine the historical defrosting data that is closest to the user door opening and closing data in the current defrosting cycle and the predicted ambient temperature and humidity values ​​within the first preset time period in the future, and determine the second water volume value based on the closest historical defrosting data. The second water volume value is the predicted water volume in the water tray 3 at the end of the next defrosting cycle after the current defrosting cycle.

[0043] Specifically, the control unit 130 can construct a feature vector from the total number of times the first door is opened and closed, the total time of the first door opening and closing, the predicted ambient temperature value and the predicted ambient humidity value within the first preset time period in the current defrosting cycle, calculate the distance between the feature vector and the feature vector of each set of stored historical defrosting data, and select the set of historical defrosting data with the smallest distance as the closest historical defrosting data.

[0044] Based on the historical defrosting data, the water volume value at the end of the second defrosting cycle corresponding to the historical defrosting data pre-stored in the control unit 130 is obtained as the second water volume value.

[0045] Step S15: Update the operating parameters of compressor 1 and / or condenser fan 2 in the next defrosting cycle based on the second water volume value.

[0046] Specifically, the control unit 130 determines the operating parameters of the compressor 1 and / or the condenser fan 2 in the next defrost cycle based on the threshold range of the second water volume value, so as to reduce the risk of defrost water overflowing from the water tray 3 at the end of the next defrost cycle.

[0047] In this embodiment, the defrosting water volume in the water receiving pan 3 is collected in real time by the water level acquisition subunit of the water receiving pan, and a graded response is executed according to the threshold range of the current water volume. Combined with weather forecasts and user history data obtained from the network, the water volume value at the end of the next cycle is predicted before the end of the defrosting cycle, thereby adjusting the operating parameters of the compressor 1 and the condenser fan 2 in the next defrosting cycle in advance to improve the evaporation efficiency of the defrosting water.

[0048] Thus, this solution improves the defrost water evaporation capacity without increasing the volume of the drip tray 3 or affecting the cooling effect. At the same time, the control strategy in this solution can adapt to the user's actual usage habits and the frosting situation under different seasons and climates, avoiding water overflow in the drip tray 3 caused by frequent opening and closing of doors or extreme humid weather.

[0049] In one possible implementation, step S15 includes the following sub-steps.

[0050] If the second water volume value is less than the first preset water volume threshold, it indicates that the water volume in the water tray 3 is within a safe range at the end of the predicted next defrosting cycle. The existing control logic can ensure the normal evaporation of defrosting water without the risk of overflow. The control unit 130 controls the operating parameters of the compressor 1 and / or the condenser fan 2 to remain unchanged in the next defrosting cycle.

[0051] If the second water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold, it indicates that the water volume in the water tray 3 will reach the medium water level range at the end of the predicted next defrosting cycle. If the current control logic is maintained, there may be a risk of overflow. In the next defrosting cycle, the operating parameters of the compressor 1 and / or the condenser fan 2 will be updated to the first adjustment mode to increase the exhaust heat of the compressor 1, thereby increasing the evaporation of defrosting water in the water tray 3, so that the actual water volume at the end of the next defrosting cycle will drop back to the safe range.

[0052] If the second water volume value is greater than or equal to the second preset water volume threshold, it indicates that the water volume in the drip tray 3 will reach a high level at the end of the predicted next defrost cycle, posing a high risk of overflow. The aforementioned adjustments alone are insufficient to ensure safety. Therefore, in the next defrost cycle, the operating parameters of compressor 1 and / or condenser fan 2 will be updated to the second adjustment mode. Compared to the first adjustment mode, the second adjustment mode allows for a further increase in the operating rate of compressor 1, thereby generating more heat for evaporating defrost water.

[0053] Meanwhile, even if the operating parameters of compressor 1 and / or condenser fan 2 are updated to the second adjustment mode, if the cooling rate of the freezer compartment has significantly decreased before defrosting, it indicates that the evaporator is already severely frosted. If defrosting is still performed according to the predetermined sequence of the refrigeration equipment 100 at this time, not only will the defrosting water evaporation efficiency be limited, but the cooling effect of the freezer compartment may also be affected. To eliminate this risk, it is also necessary to obtain the first cooling rate value and the second cooling rate value of the freezer compartment after the operating parameters of compressor 1 and / or condenser fan 2 are updated to the second adjustment mode. Based on the first preset relationship between the first cooling rate and the second cooling rate, the defrosting operation is delayed when the refrigeration equipment 100 meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle.

[0054] The first cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under at least two non-open conditions during the current defrosting cycle. During the multiple cooling rate measurements of the freezer compartment by the freezer compartment temperature acquisition subunit, the door of the refrigeration equipment 100 is always closed from the start of the first measurement to the end of the last measurement, and there is no door opening action between adjacent measurements, to ensure that the measured cooling rate can reflect the actual cooling capacity of the evaporator when there is little frost. The second cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under the non-open condition when the refrigeration equipment 100 meets the preset defrosting conditions during the current defrosting cycle, which is used to characterize the actual cooling capacity of the evaporator after frost formation.

[0055] In this embodiment, the frost thickness of the evaporator is determined by comparing the ratio of the second cooling rate to the first cooling rate. If the cooling rate is still maintained at a high level, it indicates that the evaporator has sufficient cooling capacity and defrosting can be delayed so that the compressor 1 can continue to run to evaporate the water stored in the water tray 3. If the cooling rate has decreased significantly, it indicates that the frost layer is already thick and defrosting needs to be started directly to ensure the cooling effect of the freezer compartment.

[0056] Thus, this solution implements differentiated evaporation capacity adjustment based on the predicted water volume range. When the water volume in the water tray 3 is small, it maintains low energy consumption operation; when the water volume is medium, it improves evaporation efficiency through gentle adjustment; and when the water volume is high, it reduces the risk of overflow through both strong adjustment and delayed defrosting, thereby achieving a balance between overflow prevention and cooling performance.

[0057] In one possible implementation, the first adjustment mode includes reducing the speed of compressor 1 by a first speed value, increasing the speed of condenser fan 2 by a second speed value, and reducing the stop point of the freezer compartment by a first temperature value.

[0058] In this embodiment, the first speed value, the second speed value, and the first temperature value can be set according to the model of the refrigeration equipment 100 and the performance parameters of the compressor 1, so as to increase the amount of defrosting water evaporation in the water receiving pan 3 under the premise of meeting the safe operating range of the compressor 1.

[0059] Optionally, the first rotational speed is 200r~400r, the second rotational speed is 100r~300r, and the first temperature is 0.5℃~1.5℃.

[0060] For example, the first adjustment mode includes reducing the speed of compressor 1 by 300 r, increasing the speed of condenser fan 2 by 200 r, and lowering the stop point of the freezer compartment by 1 °C.

[0061] In this way, by slightly reducing the speed of compressor 1, increasing the speed of condenser fan 2, and lowering the shutdown point, the single running time of compressor 1 is extended and the heat emission is increased, thereby improving the evaporation efficiency of defrost water in drip tray 3 without significantly affecting the refrigeration performance of the freezer compartment.

[0062] In one possible implementation, the second adjustment mode includes reducing the speed of compressor 1 by a third speed value, increasing the speed of condenser fan 2 by a fourth speed value, and reducing the stop point of the freezer compartment by a second temperature value.

[0063] It should be noted that the third speed value is greater than the first speed value, the fourth speed value is greater than the second speed value, and the second temperature value is greater than the first temperature value. That is, in the second adjustment mode, the compressor 1 speed decreases more significantly, the condenser fan 2 speed increases more significantly, and the freezer compartment stop point is lowered more significantly, so as to further increase the operating rate of compressor 1 and generate more heat for evaporating defrost water.

[0064] In this embodiment, the third speed value, the fourth speed value, and the second temperature value can be set according to the model of the refrigeration equipment 100 and the performance parameters of the compressor 1, so as to increase the amount of defrosting water evaporation in the water receiving pan 3 under the premise of meeting the safe operating range of the compressor 1.

[0065] Optionally, the third rotational speed is 400r~600r, the fourth rotational speed is 200r~400r, and the second temperature is 1.5℃~2.5℃.

[0066] For example, the second adjustment mode includes reducing the speed of compressor 1 by 500 rpm, increasing the speed of condenser fan 2 by 300 rpm, and lowering the stop point of the freezer compartment by 2°C.

[0067] In this way, by slightly reducing the speed of compressor 1, increasing the speed of condenser fan 2, and lowering the shutdown point, the single running time of compressor 1 is extended and the heat emission is further increased, thereby improving the evaporation efficiency of defrost water in drip tray 3 without significantly affecting the refrigeration performance of the freezer compartment.

[0068] In one possible implementation, the aforementioned step of delaying the defrosting operation when the refrigeration equipment 100 meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle, based on the first preset relationship between the first cooling rate and the second cooling rate, includes the following sub-steps.

[0069] If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the first preset threshold, then the delay time for the defrosting operation is determined to be the third preset time.

[0070] Optionally, the first preset threshold value ranges from 0.75 to 0.95 to indicate that the frost layer on the evaporator surface has not yet affected the cooling capacity of the freezer compartment, and the compressor 1 still has sufficient capacity to continue cooling. At this time, the third preset duration of defrosting can be delayed.

[0071] For example, the first preset threshold is set to 0.85, and the third preset duration is 12 hours.

[0072] In this way, the risk of water overflow from the drip tray 3 can be reduced without affecting the cooling capacity of the refrigeration equipment 100.

[0073] If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the second preset threshold and less than the first preset threshold, then the delay time for the defrosting operation is determined to be the fourth preset time; wherein the fourth preset time is less than the third preset time.

[0074] Optionally, the second preset threshold value ranges from 0.6 to 0.8 to indicate that the frost layer on the evaporator has a certain thickness, which has a certain impact on the cooling capacity, but the compressor 1 still has some spare capacity. At this time, the fourth preset duration of delayed defrosting can be selected.

[0075] For example, the second preset threshold is set to 0.7, and the fourth preset duration is 6 hours.

[0076] Thus, without severely affecting the cooling capacity, the residual heat of the compressor 1 can be used to evaporate the water stored in the water tray 3, while also taking into account the cooling effect of the freezer compartment.

[0077] If the ratio of the second cooling rate to the first cooling rate is less than the second preset threshold, then the delay time of the defrosting operation is determined to be 0.

[0078] Optionally, when the ratio of the second cooling rate to the first cooling rate is less than the second preset threshold, it indicates that the frost layer on the evaporator is already thick and has seriously affected the cooling capacity of the freezer compartment. In this case, defrosting is no longer delayed and the defrosting operation is started directly.

[0079] For example, when the ratio of the second cooling rate to the first cooling rate is less than 0.7, the delay time is determined to be 0.

[0080] This avoids the temperature in the freezer compartment rising due to delayed defrosting, which could affect the quality of stored food and ensures the refrigeration capacity of the refrigeration equipment is 100%.

[0081] In one possible implementation, the control method for preventing water from overflowing from the drip tray further includes the following steps.

[0082] It should be noted that when the first water volume value is between the first preset water volume threshold and the second preset water volume threshold, it indicates that the current water volume is still within a controllable range. The operating parameters of the compressor 1 and / or the condenser fan 2 in the next cycle can be predicted and adjusted in advance by the method in the aforementioned embodiment to prevent water overflow.

[0083] When the first water volume value is greater than or equal to the second preset water volume threshold, it indicates that the current water volume is in a high range and the risk of overflow is high. At this time, there is no need to predict and the evaporation capacity can be directly increased.

[0084] Specifically, if the first water volume value is greater than or equal to the second preset water volume threshold, the operating parameters of compressor 1 and / or condenser fan 2 will be updated to the third adjustment mode in the next defrosting cycle; and the first cooling rate value and the second cooling rate value of the freezer compartment will be obtained. According to the second preset relationship between the first cooling rate and the second cooling rate, the defrosting operation will be delayed when the refrigeration equipment 100 meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle. The first cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under at least two non-open conditions in the current defrosting cycle, and the second cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under the non-open condition when the refrigeration equipment 100 meets the preset defrosting conditions in the current defrosting cycle.

[0085] In this embodiment, the third adjustment mode has a larger adjustment force to quickly increase the operating rate of compressor 1 and increase the evaporation of defrost water in water receiving pan 3.

[0086] If the first water volume value is less than the first preset water volume threshold, the operating parameters of compressor 1 and / or condenser fan 2 will remain unchanged in the next defrosting cycle.

[0087] Thus, when the current water volume in the water receiving pan 3 is already in the high range, a powerful adjustment is directly triggered to improve the response speed. When the water volume in the water receiving pan 3 is safe, the current control logic is maintained to reduce unnecessary energy consumption.

[0088] In one possible implementation, the third adjustment mode includes reducing the speed of compressor 1 by a third speed value, increasing the speed of condenser fan 2 by a fourth speed value, and reducing the stop point of the freezer compartment by a second temperature value.

[0089] In this embodiment, the third speed value, the fourth speed value, and the second temperature value can be set according to the model of the refrigeration equipment 100 and the performance parameters of the compressor 1, so as to increase the amount of defrosting water evaporation in the water receiving pan 3 under the premise of meeting the safe operating range of the compressor 1.

[0090] Optionally, the third rotational speed is 400r~600r, the fourth rotational speed is 200r~400r, and the second temperature is 1.5℃~2.5℃.

[0091] For example, the third adjustment mode includes reducing the speed of compressor 1 by 500 r, increasing the speed of condenser fan 2 by 300 r, and lowering the stop point of the freezer compartment by 2°C.

[0092] Thus, when the current first water volume is extremely high, the evaporation efficiency of defrost water in the water tray 3 can be improved by slightly reducing the speed of compressor 1, increasing the speed of condenser fan 2, and lowering the shutdown point.

[0093] In one possible implementation, the aforementioned step of obtaining the first cooling rate value and the second cooling rate value of the freezer compartment, and delaying the execution of the defrosting operation when the refrigeration equipment 100 meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle according to the second preset relationship between the first cooling rate and the second cooling rate, includes the following sub-steps.

[0094] If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the third preset threshold, then the delay time for the defrosting operation is determined to be the fifth preset time.

[0095] Optionally, the third preset threshold value ranges from 0.75 to 0.95.

[0096] For example, the third preset threshold is set to 0.85, and the fifth preset duration is 12 hours.

[0097] In this way, without affecting the cooling capacity of the refrigeration equipment 100, the compressor 1 can gain extra running time to evaporate the water stored in the water collection pan 3.

[0098] If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the fourth preset threshold and less than the third preset threshold, then the delay time for the defrosting operation is determined to be the sixth preset time; wherein the sixth preset time is less than the fifth preset time.

[0099] Optionally, the fourth preset threshold value ranges from 0.6 to 0.8.

[0100] For example, the fourth preset threshold is set to 0.7, and the sixth preset duration is 6 hours.

[0101] Thus, without severely affecting the cooling capacity, the residual heat of the compressor 1 can be used to evaporate the water stored in the water tray 3, while also taking into account the cooling effect of the freezer compartment.

[0102] If the ratio of the second cooling rate to the first cooling rate is less than the fourth preset threshold, then the delay time of the defrosting operation is determined to be 0.

[0103] Optionally, when the ratio of the second cooling rate to the first cooling rate is less than the fourth preset threshold, it indicates that the frost layer on the evaporator is already thick and has seriously affected the cooling capacity of the freezer compartment. In this case, defrosting is no longer delayed.

[0104] For example, when the ratio of the second cooling rate to the first cooling rate is less than 0.7, the delay time is determined to be 0.

[0105] In this way, while ensuring the cooling effect of the freezer compartment, the evaporation capacity of defrost water in the drip tray 3 of the refrigeration equipment 100 is improved.

[0106] Based on the same inventive concept, the present invention also provides a control device for preventing water from overflowing from the drip tray, please refer to... Figure 4 The control unit 130 applied to the refrigeration equipment 100 includes multiple functional modules that can be stored in machine-readable storage media in software form.

[0107] The refrigeration equipment 100 includes a freezer compartment. The refrigeration equipment 100 also includes a refrigeration unit 110, a detection unit 120, and a control unit 130. The refrigeration unit 110 includes a compressor 1, a condenser fan 2, and a water tray 3. The detection unit 120 includes a water tray level acquisition subunit, an ambient temperature and humidity acquisition subunit, a freezer compartment temperature acquisition subunit, and a door opening and closing signal acquisition subunit. The control unit 130 is electrically connected to the refrigeration unit 110 and the detection unit 120, respectively.

[0108] Functionally, the control device for preventing water from overflowing from the drip tray may include a first acquisition module, a second acquisition module, a third acquisition module, a determination module, and a parameter update module.

[0109] The first acquisition module is used to acquire at least two sets of historical defrosting data of the refrigeration equipment 100. The historical defrosting data includes the average ambient temperature value, average ambient humidity value, average total number of door openings and closings, and average total door opening time value of two consecutive defrosting cycles after the first defrosting cycle ends.

[0110] In this embodiment, the first acquisition module can be used to execute Figure 3 For a detailed description of the first acquisition module, please refer to the description of step S11 shown.

[0111] The second acquisition module is used to acquire the first water volume value of the water receiving pan 3, wherein the first water volume value is the water volume in the water receiving pan 3 at the end of the current defrosting cycle of the refrigeration equipment 100.

[0112] In this embodiment, the second acquisition module can be used to execute Figure 3 For a detailed description of the second acquisition module, please refer to the description of step S12 shown in the figure.

[0113] The third acquisition module is used to acquire user door opening and closing data in the current defrosting cycle and predicted environmental temperature and humidity values ​​within the next first preset time period when the first water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold. The user door opening and closing data includes the total number of times the first door is opened and closed and the total time of the first door opening and closing in the current defrosting cycle. The predicted environmental temperature and humidity values ​​include the predicted environmental temperature value and the predicted environmental humidity value within the next first preset time period.

[0114] In this embodiment, the third acquisition module can be used to execute Figure 3For a detailed description of the third acquisition module, please refer to the description of step S13 shown in step S13.

[0115] The determination module is used to determine the historical defrosting data that is closest to the user door opening and closing data in the current defrosting cycle and the predicted ambient temperature and humidity values ​​within the first preset time period in the future, and to determine the second water volume value based on the closest historical defrosting data. The second water volume value is the predicted water volume in the water tray 3 at the end of the next defrosting cycle after the current defrosting cycle.

[0116] In this embodiment, the determination module can be used to execute Figure 3 For a detailed description of step S14, please refer to the description of step S14.

[0117] The parameter update module is used to update the operating parameters of compressor 1 and / or condenser fan 2 in the next defrosting cycle based on the second water volume value.

[0118] In this embodiment, the parameter update module can be used to perform... Figure 3 For a detailed description of the parameter update module, please refer to the description of step S15 shown.

[0119] The present invention also provides a refrigeration device 100, including the aforementioned control device for preventing water overflow from the drip tray. Since the aforementioned control device for preventing water overflow from the drip tray 3 improves the defrost water evaporation capacity without increasing the volume of the drip tray 3 or affecting the refrigeration effect, and can adapt to the user's actual usage habits and frost conditions in different seasons and climates, it avoids water overflow from the drip tray 3 caused by frequent door opening and closing or extremely humid weather. Therefore, the refrigeration device 100 in this embodiment has good reliability.

[0120] In summary, this invention provides a control method, device, and refrigeration equipment to prevent water overflow from the drip tray. The control method for preventing drip tray overflow uses a drip tray water level acquisition subunit to collect the defrost water volume in the drip tray in real time. It then executes a graded response based on the current water volume's threshold range and combines this with data from networked weather forecasts and user history to predict the water volume at the end of the next defrost cycle. This allows for advance adjustment of the compressor and condenser fan's operating parameters in the next defrost cycle, improving the evaporation efficiency of the defrost water. Thus, this solution improves defrost water evaporation capacity without increasing the drip tray volume or affecting the refrigeration effect. Furthermore, the control strategy in this solution adapts to actual user habits and frost conditions in different seasons and climates, preventing drip tray overflow caused by frequent door opening and closing or extreme humidity.

[0121] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0122] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control method for preventing water overflow from a drip tray, characterized in that, A control unit is applied to a refrigeration equipment, the refrigeration equipment including a freezer compartment, the refrigeration equipment also including a refrigeration unit, a detection unit and a control unit, the refrigeration unit including a compressor, a condenser fan and a water tray, the detection unit including a water tray water level acquisition subunit, an ambient temperature and humidity acquisition subunit, a freezer compartment temperature acquisition subunit and a door opening and closing signal acquisition subunit, the control unit being electrically connected to the refrigeration unit and the detection unit respectively; The method includes: Acquire at least two sets of historical defrosting data for refrigeration equipment. The historical defrosting data includes the average ambient temperature, average ambient humidity, average total number of door openings and closings, and average total door opening time for two consecutive defrosting cycles after the first defrosting cycle ends. Obtain a first water volume value from the water collection tray, wherein the first water volume value is the water volume in the water collection tray at the end of the current defrosting cycle of the refrigeration equipment; If the first water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold, then obtain the user door opening and closing data in the current defrosting cycle and the predicted environmental temperature and humidity values ​​within the next first preset time period. The user door opening and closing data includes the first total number of door openings and closings and the first total door opening and closing time value in the current defrosting cycle. The predicted environmental temperature and humidity values ​​include the predicted environmental temperature value and the predicted environmental humidity value within the next first preset time period. Determine the historical defrost data that is closest to the user door opening / closing data in the current defrost cycle and the predicted ambient temperature and humidity values ​​within the next first preset time period, and determine a second water volume value based on the closest historical defrost data, wherein the second water volume value is the predicted water volume in the water tray at the end of the next defrost cycle after the current defrost cycle. The operating parameters of the compressor and / or the condenser fan in the next defrosting cycle are updated based on the second water volume value.

2. The method according to claim 1, characterized in that, The step of updating the operating parameters of the compressor and / or the condenser fan in the next defrost cycle based on the second water volume value includes: If the second water volume value is less than the first preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will remain unchanged in the next defrosting cycle. If the second water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold, then the operating parameters of the compressor and / or the condenser fan will be updated to the first adjustment mode in the next defrosting cycle. If the second water volume value is greater than or equal to the second preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will be updated to the second adjustment mode in the next defrosting cycle; and the first cooling rate value and the second cooling rate value of the freezer compartment will be obtained. According to the first preset relationship between the first cooling rate and the second cooling rate, the defrosting operation will be delayed when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle; wherein, the first cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under at least two non-open states in the current defrosting cycle, and the second cooling rate value is the average cooling rate of the freezer compartment in the second preset time period under the second preset state when the refrigeration equipment meets the preset defrosting conditions in the current defrosting cycle.

3. The method according to claim 2, characterized in that, The step of updating the operating parameters of the compressor and / or the condenser fan to the first adjustment mode in the next defrosting cycle includes: Reduce the speed of the compressor to a first speed value; Increase the speed of the condenser fan by a second speed value; The shutdown point of the freezer compartment is reduced by a first temperature value.

4. The method according to claim 2, characterized in that, The step of updating the operating parameters of the compressor and / or the condenser fan to the second adjustment mode in the next defrosting cycle includes: Reduce the compressor speed to a third speed value; Increase the speed of the condenser fan to a fourth speed value; The shutdown point of the freezer compartment is reduced to a second temperature value.

5. The method according to claim 2, characterized in that, The step of delaying the defrosting operation when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle, based on a first preset relationship between the first cooling rate and the second cooling rate, includes: If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the first preset threshold, then the delay time of the defrosting operation is determined to be the third preset time. If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the second preset threshold and less than the first preset threshold, then the delay time of the defrosting operation is determined to be the fourth preset time; wherein the fourth preset time is less than the third preset time. If the ratio of the second cooling rate to the first cooling rate is less than the second preset threshold, then the delay time of the defrosting operation is determined to be 0.

6. The method according to claim 1, characterized in that, The method further includes: If the first water volume value is greater than or equal to the second preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will be updated to the third adjustment mode in the next defrosting cycle; and the first cooling rate value and the second cooling rate value of the freezer compartment will be obtained. According to the second preset relationship between the first cooling rate and the second cooling rate, the defrosting operation will be delayed when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle; wherein, the first cooling rate value is the average cooling rate of the freezer compartment in the second preset duration under at least two non-open states in the current defrosting cycle, and the second cooling rate value is the average cooling rate of the freezer compartment in the second preset duration under the second preset state when the refrigeration equipment meets the preset defrosting conditions in the current defrosting cycle. If the first water volume value is less than the first preset water volume threshold, the operating parameters of the compressor and / or the condenser fan will remain unchanged in the next defrosting cycle.

7. The method according to claim 6, characterized in that, The step of updating the operating parameters of the compressor and / or the condenser fan to the third adjustment mode in the next defrost cycle includes: Reduce the compressor speed to a third speed value; Increase the speed of the condenser fan to a fourth speed value; The shutdown point of the freezer compartment is reduced to a second temperature value.

8. The method according to claim 6, characterized in that, The step of obtaining the first cooling rate value and the second cooling rate value of the freezer compartment, and delaying the defrosting operation when the refrigeration equipment meets the preset defrosting conditions in the current refrigeration cycle and the next refrigeration cycle according to the second preset relationship between the first cooling rate and the second cooling rate includes: If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the third preset threshold, then the delay time of the defrosting operation is determined to be the fifth preset time. If the ratio of the second cooling rate to the first cooling rate is greater than or equal to the fourth preset threshold and less than the third preset threshold, then the delay time of the defrosting operation is determined to be the sixth preset time; wherein the sixth preset time is less than the fifth preset time. If the ratio of the second cooling rate to the first cooling rate is less than the fourth preset threshold, then the delay time of the defrosting operation is determined to be 0.

9. A control device for preventing water from overflowing from a drip tray, characterized in that, A control unit is applied to a refrigeration equipment, the refrigeration equipment including a freezer compartment, the refrigeration equipment also including a refrigeration unit, a detection unit and a control unit, the refrigeration unit including a compressor, a condenser fan and a water tray, the detection unit including a water tray water level acquisition subunit, an ambient temperature and humidity acquisition subunit, a freezer compartment temperature acquisition subunit and a door opening and closing signal acquisition subunit, the control unit being electrically connected to the refrigeration unit and the detection unit respectively; The device includes: The first acquisition module is used to acquire at least two sets of historical defrosting data of refrigeration equipment. The historical defrosting data includes the average ambient temperature value, average ambient humidity value, average total number of door openings and closings, and average total door opening time value of two consecutive defrosting cycles after the first defrosting cycle ends. The second acquisition module is used to acquire the first water volume value of the water receiving tray, wherein the first water volume value is the water volume in the water receiving tray at the end of the current defrosting cycle of the refrigeration equipment; The third acquisition module is used to acquire user door opening and closing data in the current defrosting cycle and predicted environmental temperature and humidity values ​​within a first preset time period when the first water volume value is greater than or equal to the first preset water volume threshold and less than the second preset water volume threshold. The user door opening and closing data includes the first total number of door openings and closings and the first total time of door openings and closings in the current defrosting cycle. The predicted environmental temperature and humidity values ​​include the predicted environmental temperature and predicted environmental humidity values ​​within a first preset time period. The determination module is used to determine the historical defrosting data that is closest to the user door opening and closing data in the current defrosting cycle and the predicted environmental temperature and humidity values ​​within a first preset time period in the future, and to determine a second water volume value based on the closest historical defrosting data, wherein the second water volume value is the predicted water volume in the water receiving tray at the end of the next defrosting cycle after the current defrosting cycle. The parameter update module is used to update the operating parameters of the compressor and / or the condenser fan in the next defrosting cycle based on the second water volume value.

10. A refrigeration device, characterized in that, Includes the control device for preventing water from overflowing from the drip tray as described in claim 9.

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