Refrigerating chamber defrosting control method, refrigeration equipment and storage medium

Abstract

The invention discloses a refrigerating chamber defrosting control method, refrigeration equipment and a storage medium, and the method comprises the following steps: judging whether a defrosting period is entered or not, if yes, reading the current temperature of a refrigerating chamber, comparing the current temperature with a set stop point temperature, and if the temperature of the refrigerating chamber does not reach the stop point temperature, delaying defrosting; and if the temperature of the refrigerating chamber reaches the stop point temperature, defrosting is started. The invention provides a refrigerating chamber defrosting control method and an optimization strategy thereof. The problems that in the defrosting process of an existing dual-system refrigerator, temperature fluctuation of a refrigerating chamber is large, temperature distribution is uneven, and the food material preservation effect is poor can be effectively solved. A multi-dimensional judgment and correction mechanism is introduced into defrosting logic, so that the defrosting opportunity is better matched with the operation state of the refrigerating chamber, the environment condition and the user requirement.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to a defrosting control method for cold storage compartments, refrigeration equipment, and storage media. Background Technology

[0002] Existing dual-system refrigerators typically employ an independent cooling structure for the refrigerator and freezer compartments to control the different temperature requirements of each. However, in actual operation, factors such as frequent changes in refrigerator load, ambient temperature fluctuations, and unreasonable defrosting control strategies lead to uneven temperature distribution within the refrigerator compartment, affecting food preservation.

[0003] In addition, traditional series-parallel refrigeration systems often do not consider the current temperature of the refrigerator compartment during the defrosting process and directly perform the defrosting operation, which can easily cause the temperature of the refrigerator compartment to rise again, further aggravating the temperature fluctuation problem.

[0004] Therefore, a new control method is urgently needed to optimize the defrosting control logic in order to improve the stability of refrigeration temperature. Summary of the Invention

[0005] To solve at least one of the above-mentioned technical problems, on the one hand, the present invention provides a defrosting control method for a refrigerator compartment, wherein the defrosting control logic prioritizes determining whether the refrigerator compartment has reached the shutdown temperature point, so that the refrigerator system does not perform defrosting operation when it is not necessary, thereby avoiding unnecessary temperature fluctuations.

[0006] On the other hand, the present invention also proposes a refrigeration device employing the aforementioned defrosting control method for the refrigerator compartment, and a storage medium for storing the defrosting control method for the refrigerator compartment.

[0007] The technical solution adopted in this invention is to design a defrosting control method for a refrigerator compartment, including:

[0008] Determine if the defrosting cycle has begun. If so, read the current temperature of the refrigerator compartment and compare it with the set shutdown temperature.

[0009] If the refrigerator compartment temperature has not reached the shutdown temperature, defrosting will be delayed;

[0010] If the refrigerator compartment temperature has reached the shutdown temperature, defrosting will begin.

[0011] In some implementations, the ambient temperature outside the refrigerator is obtained; if the ambient temperature is higher than a preset value, the shutdown point temperature is lowered; if the ambient temperature is lower than the preset value, the shutdown point temperature is raised.

[0012] In some implementations, when the operating rate of the refrigerator compartment increases during a refrigeration cycle, the set shutdown point temperature of the refrigerator compartment decreases.

[0013] In some implementations, during the pre-defrost strong cooling phase, the refrigerator compartment shutdown temperature T OFF =T ON -T C2 / 2; where T C2 This is a second correction parameter preset based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature; the refrigerator compartment start-up temperature T ON =Set temperature + T C1 / 2; where T C1 The preset start-up temperature correction parameters are based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature.

[0014] In some implementations, during the pre-defrost cooling phase, the refrigerator compartment shutdown temperature T OFF =T ON -T C2 / 2-T C3 / 2; where T C3 This is a third correction parameter preset based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature.

[0015] In some implementations, T OFF =T ON -T C2 / 2-T C3 / 2-T C4 / 2; where T C4 I preset the fourth correction parameter based on the relationship between the set temperature of the refrigerator compartment and the operating rate of the refrigerator compartment.

[0016] In some implementations, when the refrigerator compartment shutdown temperature is 0 degrees Celsius, the compressor continues to operate before defrosting, while the airflow to the refrigerator compartment is stopped.

[0017] The refrigeration equipment adopts the aforementioned defrosting control method for the cold storage compartment.

[0018] In some embodiments, the refrigeration equipment includes a refrigerator compartment and a freezer compartment, and the refrigerant heat exchangers of the refrigerator compartment and the freezer compartment are switched between series and parallel states in the refrigeration system via switching valves.

[0019] A computer-readable storage medium comprising a stored computer program, wherein, when the computer program is executed by a processor, it controls the device containing the storage medium to perform the refrigerator defrosting control method.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention proposes a defrosting control method and optimization strategy for the refrigerator compartment, which can effectively solve the problems of large temperature fluctuations, uneven temperature distribution, and poor food preservation in existing dual-system refrigerators during the defrosting process. By introducing a multi-dimensional judgment and correction mechanism into the defrosting logic, the timing of defrosting is better matched with the operating status of the refrigerator compartment, environmental conditions, and user needs.

[0022] This invention achieves precise control and smooth transition of refrigerator compartment temperature through a complete set of multi-parameter, multi-stage defrosting control strategies, significantly improving temperature uniformity and stability, extending food preservation time, and improving user experience; at the same time, it enhances the adaptability and energy efficiency of the refrigeration system, taking into account both preservation performance and energy saving effect, and has high practical value and promotion prospects.

[0023] By employing a series-parallel refrigeration system structure for both refrigeration and freezing, and prioritizing the determination of whether the refrigerator compartment has reached its shutdown point in the defrosting control logic, the refrigeration system avoids defrosting operations when unnecessary, thereby preventing unnecessary temperature fluctuations. Simultaneously, by dynamically adjusting the refrigerator compartment's shutdown point temperature based on ambient temperature, the system maintains excellent temperature control accuracy and uniformity under various environmental conditions, achieving the technical effect of improved refrigeration and preservation. Attached Figure Description

[0024] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. To illustrate the details and facilitate understanding of its principles, the drawings are not necessarily to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Wherein:

[0025] Figure 1 This is a flowchart illustrating the defrosting control method.

[0026] Figure 2 This is a schematic diagram of a refrigeration system.

[0027] In the diagram, 1 is the compressor; 2 is the condenser; 3 is the refrigerated evaporator; 4 is the frozen evaporator; and 5 is the switching valve. Detailed Implementation

[0028] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the invention covered by the claims. Furthermore, not all combinations of the features described in the embodiments are necessary for the inventive solution.

[0029] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example

[0031] Existing dual-system refrigerators typically employ an independent cooling structure for the refrigerator and freezer compartments to control the different temperature requirements of each. However, in actual operation, factors such as frequent changes in refrigerator load, ambient temperature fluctuations, and unreasonable defrosting control strategies lead to uneven temperature distribution within the refrigerator compartment, affecting food preservation.

[0032] In addition, traditional series-parallel refrigeration systems often do not consider the current temperature of the refrigerator compartment during the defrosting process and directly perform the defrosting operation, which can easily cause the temperature of the refrigerator compartment to rise again, further aggravating the temperature fluctuation problem.

[0033] Therefore, as Figure 1 As shown, a defrosting control method for the refrigerator compartment is proposed, which optimizes the defrosting control logic to improve the stability of the refrigerator temperature. The control method is as follows:

[0034] Determine if the defrosting cycle has begun. If so, read the current temperature of the refrigerator compartment and compare it with the set shutdown temperature.

[0035] If the refrigerator compartment temperature has not reached the shutdown temperature, defrosting will be delayed;

[0036] If the refrigerator compartment temperature has reached the shutdown temperature, defrosting will begin.

[0037] When the system determines that a defrosting cycle has begun, the control system first reads the current temperature of the refrigerator compartment and compares it with the set stop point temperature. If the refrigerator compartment temperature has not reached the stop point, the defrosting action is delayed to prioritize stabilizing the refrigerator compartment temperature; if the stop point has been reached, the defrosting process begins.

[0038] The refrigeration system first determines whether to enter a defrost cycle based on parameters such as running time, frost thickness, or pressure difference. Upon determining that a defrost cycle has begun, defrosting is not initiated immediately. Instead, the system further collects current refrigerator compartment temperature data and compares it with a pre-set shutdown point temperature. If the refrigerator compartment temperature has not yet reached the shutdown point temperature, the system delays the defrosting operation, prioritizing maintaining a stable refrigerator compartment temperature. This avoids prematurely initiating defrosting when the refrigerator load is high or the temperature is too high, thus preventing a significant temperature rebound in the refrigerator compartment due to compressor shutdown and defrosting heating. The defrosting process is only triggered when the refrigerator compartment temperature has dropped to the shutdown point temperature—that is, when the refrigerator compartment heat load is low and the compressor should be shut down. This ensures that the defrosting operation is coordinated with changes in refrigerator temperature. This logic effectively avoids the drastic temperature fluctuations that occur during defrosting in traditional methods, improving the uniformity and stability of the refrigerator compartment temperature, thereby extending food preservation time and improving the user experience. Simultaneously, this method optimizes the overall operating efficiency of the refrigeration system, reduces energy waste, and balances refrigeration performance with energy-saving effects.

[0039] The defrost cycle of a refrigerator refers to the periodic scheduling of the defrosting operation performed periodically by the refrigerator's refrigeration system to remove frost from the evaporator surface. The defrost cycle directly affects the temperature stability, energy consumption, and food preservation effect of the refrigerator's refrigerator and freezer compartments.

[0040] The defrosting cycle typically includes two phases:

[0041] The first stage is the refrigeration operation stage (refrigeration cycle). During this stage, the refrigerator operates normally, the compressor drives the refrigerant circulation, and the evaporator absorbs heat from the refrigerator or freezer compartment. Over time, a frost layer will form on the surface of the evaporator, gradually reducing the heat exchange efficiency.

[0042] The other stage is the defrosting stage. In this stage, the system stops cooling or the compressor stops, and the defrosting device (such as heating element or hot gas return) is activated. The frost on the surface of the evaporator is melted into water and discharged, restoring heat exchange efficiency. The defrosting process usually lasts from a few minutes to more than ten minutes, depending on the thickness of the frost and the refrigerator model.

[0043] Furthermore, the ambient temperature outside the refrigerator compartment is obtained. If the ambient temperature is higher than a preset value, the shutdown point temperature is lowered; if the ambient temperature is lower than the preset value, the shutdown point temperature is raised. In high-temperature environments, the shutdown point temperature of the refrigerator compartment is appropriately lowered to enhance cooling capacity and prevent temperature rise due to high external heat load; in low-temperature environments, the shutdown point temperature is raised to reduce energy consumption.

[0044] While executing the defrosting control logic for the refrigerator compartment, the system incorporates ambient temperature as a regulating factor. When the external ambient temperature of the refrigerator compartment is acquired, if the detected value is higher than the preset value, it indicates that the external ambient temperature is too high and the refrigerator compartment is under a large heat load. In this case, the stop point temperature is appropriately lowered so that the refrigerator compartment can enter the stop and defrosting state at a lower temperature, thus preventing the refrigerator compartment temperature from rising too quickly due to premature shutdown under high ambient temperature conditions, which would affect food preservation. Conversely, when the ambient temperature is lower than the preset value, it indicates that the external heat dissipation conditions are good and the refrigerator compartment load is light. In this case, raising the stop point temperature can extend the compressor's shutdown time, avoiding over-cooling, and matching the defrosting timing with the low load state of the refrigerator compartment, which is more conducive to suppressing temperature fluctuations. By dynamically adjusting the stop point temperature based on the ambient temperature, this solution can achieve adaptive defrosting control under different climatic conditions, further improving the stability of the refrigerator compartment temperature, reducing energy consumption, and enhancing the operational flexibility and adaptability of the refrigeration system.

[0045] Furthermore, when the operating rate of the refrigerator compartment increases during a refrigeration cycle, the set shutdown point temperature of the refrigerator compartment decreases.

[0046] The refrigerator compartment's operating rate is used as the basis for dynamically adjusting the shutdown point temperature. Specifically, within a complete refrigeration cycle, i.e., the time between two defrost cycles, the system calculates the cumulative running time of the refrigerator compartment compressor by comparing it to the total defrost interval time, thus obtaining the refrigerator compartment's operating rate. A higher operating rate indicates that the refrigerator compartment is under a heavier heat load during that cycle, and the temperature is prone to rise, requiring the compressor to operate for a longer period to maintain the set temperature. In this case, the system automatically reduces the shutdown point temperature, extending the refrigeration process in the refrigerator compartment, further suppressing temperature fluctuations and ensuring the freshness of food. Furthermore, as the operating rate continues to increase, the shutdown point temperature will continue to decrease, thus achieving adaptive adjustment under high load conditions. Through this method, the system can dynamically link the refrigerator compartment's operating conditions with the shutdown point setting, achieving intelligent control. The technical benefits are: it not only avoids the temperature instability problems that may arise from a fixed shutdown point under different load conditions, but also significantly improves the accuracy and stability of refrigerator temperature control through adaptive adjustment, improving food preservation and enhancing overall refrigeration efficiency.

[0047] Furthermore, during the pre-defrost cooling phase, the refrigerator compartment shutdown temperature TOFF = TON - TC2 / 2; where TC2 is a preset second correction parameter based on the correspondence between the refrigerator compartment's set temperature and the ambient temperature; the refrigerator compartment startup temperature TON = set temperature + TC1 / 2; where TC1 is a preset startup temperature correction parameter based on the correspondence between the refrigerator compartment's set temperature and the ambient temperature.

[0048] During the pre-defrost cooling phase, the refrigerator compartment dynamically adjusts its start-up and shutdown temperatures by introducing correction parameters TC1 and TC2. Specifically, the refrigerator compartment start-up temperature TON is related to the user-set target temperature and the correction parameter TC1, calculated as TON = Set Temperature + TC1 / 2. TC1 is a preset parameter based on the relationship between ambient temperature and the set temperature, reflecting the impact of the external environment on the refrigerator compartment's heat load. When the ambient temperature is high, TC1 increases, raising the start-up temperature and facilitating earlier compressor startup, thus enhancing cooling capacity. Correspondingly, the refrigerator compartment shutdown temperature TOFF is obtained using the formula TOFF = TON - TC2 / 2. TC2, also preset based on the relationship between ambient temperature and the set temperature, is used to correct the shutdown temperature. When the ambient temperature is high, TC2 increases, lowering the shutdown temperature and extending the cooling operation time, ensuring a more stable internal temperature within the refrigerator compartment. The system can match corresponding start-up and shutdown temperature ranges for different set temperatures and environmental conditions, achieving flexible adaptation. The technical benefits of this solution are: by using a formulaic temperature control logic, it avoids the temperature fluctuation problem caused by fixed start-up and shutdown points, enabling the refrigerator compartment to maintain a stable temperature range under different environments, improving temperature control accuracy and food preservation effect, and further optimizing energy consumption performance.

[0049] Specifically, the start-up temperature correction parameter T corresponds to the ambient temperature for different refrigerator compartment settings. C1 The preset values ​​are shown in the table below:

[0050]

[0051] T C2 A second correction parameter preset based on the correspondence between the set temperature of the refrigerator compartment and the ambient temperature.

[0052] Start-up temperature correction parameter T when different refrigerator compartment set temperatures correspond to ambient temperatures C2 The preset values ​​are shown in the table below:

[0053]

[0054] Furthermore, during the pre-defrost cooling phase, the refrigerator compartment shutdown temperature T OFF =T ON -T C2 / 2-T C3 / 2; where T C3 This is a third correction parameter preset based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature.

[0055] To address the intense cooling phase before defrosting, a third correction parameter T is further introduced. C3 The shutdown temperature of the refrigerator compartment is optimized and controlled. Specifically, the start-up temperature T of the refrigerator compartment is... ON The temperature and the first correction parameter T are still set by the user. C1 Confirmed, and the shutdown temperature T OFF The calculation formula for this stage is T. OFF =T ON -T C2 / 2-T C3 / 2. Where, T C2 These are standard correction parameters used to adjust the shutdown point based on the relationship between ambient temperature and set temperature, while T... C3 This is a supplementary adjustment specifically introduced for pre-defrost conditions. When the ambient temperature is high or the heat load on the refrigerator compartment is high, T C3 The value of T is increased accordingly, further reducing the shutdown temperature and extending the compressor's running time to achieve deep cooling before defrosting. This method lowers the refrigerator compartment temperature before defrosting, creating a temperature buffer zone that effectively offsets the temperature rise caused by heating and shutdown during defrosting, preventing the refrigerator compartment temperature from rising too quickly. This method not only enhances the stability of refrigerator temperature control but also improves preservation performance during defrosting, ensuring that food does not lose freshness due to temperature fluctuations. Simultaneously, by dynamically introducing T... C3The system is modified to achieve adaptive adjustment to different environmental and load conditions, thereby improving the flexibility and intelligence of system operation.

[0056] Specifically, the start-up temperature correction parameter T corresponds to the ambient temperature for different refrigerator compartment settings. C3 The preset values ​​are shown in the table below:

[0057]

[0058] Furthermore, T OFF =T ON -T C2 / 2-T C3 / 2-T C4 / 2; where T C4 This is a fourth correction parameter preset based on the relationship between the set temperature of the refrigerator compartment and the operating rate of the refrigerator compartment.

[0059] The refrigerator compartment's shutdown temperature is further combined with the fourth correction parameter T. C4 Dynamic adjustments are made, and the calculation formula is: T OFF =T ON -T C2 / 2-T C3 / 2-T C4 / 2. Where, T C2 T is a correction parameter related to ambient temperature. C3 The parameters for strong cooling correction before defrosting are T. C4 The preset temperature is based on the relationship between the refrigerator compartment's set temperature and the compressor's operating rate. When the refrigerator compartment's operating rate is high within a refrigeration cycle, it indicates a heavier heat load on the refrigerator compartment, requiring the compressor to operate for a longer period to maintain the set temperature. In this case, T... C4 As the value increases, T OFF This further reduces the compressor's operating time, allowing it to lower the refrigerator compartment temperature before shutdown to offset the temperature rise caused by high load. Conversely, when the refrigerator compartment is operating at a lower rate, T... C4 The value is reduced, and the shutdown temperature is increased to avoid over-cooling and energy waste. This is achieved by introducing T... C4 In terms of parameters, this solution considers not only the influence of environmental conditions and set temperature during the pre-defrost cooling phase, but also the real-time operating conditions of the refrigerator compartment, making the start-up and shutdown logic more precise and adaptive. Its technical effects include: effectively improving the stability and flexibility of refrigerator compartment temperature control, ensuring food freshness even under high load conditions, reducing temperature fluctuations caused by defrosting, and improving energy efficiency under low load conditions, thus balancing preservation performance and energy saving.

[0060] Specifically, the start-up temperature correction parameter T corresponds to different refrigeration unit operating rates and ambient temperatures. C4 The preset values ​​are shown in the table below:

[0061]

[0062] Furthermore, when the refrigerator compartment is shut down at 0 degrees Celsius, the compressor continues to operate before defrosting, while the airflow to the refrigerator compartment is stopped.

[0063] To address the special situation where the refrigerator compartment temperature drops to 0℃ during shutdown, an optimized control strategy before defrosting is proposed. When the system detects that the refrigerator compartment shutdown point has reached 0℃, directly shutting down to begin defrosting could cause a rapid temperature rebound in the refrigerator compartment due to the defrosting heating effect, leading to temperature fluctuations affecting the food. Therefore, this solution keeps the compressor running under this condition, ensuring the evaporator remains refrigerated, while simultaneously stopping the refrigerator compartment fan. By stopping the fan, low-temperature air is prevented from being directly delivered to the refrigerator compartment, reducing the risk of icing at the air outlet due to excessively cold airflow. Meanwhile, the evaporator continues to refrigerate, pre-lowering its temperature before defrosting to create a temperature buffer zone. This buffer zone can offset some of the temperature rise during the subsequent defrosting process, significantly reducing the overall temperature increase in the refrigerator compartment. This method not only ensures a more stable refrigerator compartment temperature during the defrosting stage but also effectively avoids the impact of icing on the airflow and heat exchange performance, thereby maintaining the freshness of the food while improving the stability of the defrosting process and the reliability of system operation.

[0064] like Figure 2 As shown, the refrigeration equipment using the aforementioned defrosting control method for the refrigerator compartment in this embodiment is a dual-system refrigerator, including a refrigerator compartment, a freezer compartment, a compressor 1, a condenser 2, a refrigerator evaporator 3, and a freezer evaporator 4. The refrigerator evaporator is the refrigerant heat exchanger for the refrigerator compartment, and the freezer evaporator is the refrigerant heat exchanger for the freezer compartment. The refrigerator and freezer systems adopt a series-parallel refrigeration structure. The refrigerant heat exchangers of the refrigerator and freezer compartments are switched between series and parallel states in the refrigeration system via a switching valve 5. That is, the series or parallel operation mode can be switched at different operating stages via the switching valve.

[0065] Of course, it also includes necessary devices such as temperature sensors for detecting the temperature of the refrigerator compartment, freezer compartment, etc., ambient temperature detection module for detecting ambient temperature, defrosting control module and main control unit, which are conventional technologies in this field and will not be described in detail here.

[0066] For example, when the freezer compartment is under heavy load and the refrigerator compartment is under light load, the system switches to series mode to improve refrigeration efficiency; conversely, when the refrigerator compartment load increases, it switches to parallel mode to ensure rapid cooling of the refrigerator compartment. This solution further optimizes the operating efficiency of the refrigeration system and improves the flexibility and response speed of temperature control.

[0067] When the frost accumulation time is up, first determine whether the refrigerator compartment has reached the shutdown temperature point. If not, do not defrost first. Adjust the refrigerator shutdown temperature point during the strong cooling phase based on the ambient temperature and the refrigerator compartment's operating rate. Defrost will only be performed after the refrigerator temperature reaches the shutdown temperature point.

[0068] The above control strategy effectively avoids temperature fluctuations caused by defrosting operations before the refrigerator compartment temperature has stabilized. At the same time, the ambient temperature feedback mechanism improves the accuracy and uniformity of refrigerator compartment temperature control, thereby improving the overall performance and energy efficiency of the refrigerator.

[0069] A series-parallel dual-system refrigerator is a refrigeration device that has both a refrigerator compartment and a freezer compartment. Its core feature is that the refrigerator evaporator and the freezer evaporator can operate in series or in parallel in the refrigeration system to adapt to the refrigeration needs under different operating conditions.

[0070] The refrigeration evaporator is located inside the refrigerator compartment and serves as a refrigerant heat exchanger. It absorbs heat from inside the refrigerator compartment, evaporates the refrigerant to carry away the heat, and thus controls the temperature of the refrigerator compartment.

[0071] The freezer evaporator is located inside the freezer compartment and serves as the refrigerant heat exchanger for maintaining a low temperature within the freezer compartment, enabling long-term freezing of food.

[0072] In series mode, the refrigerant first passes through the refrigeration evaporator and then flows to the freezing evaporator. In this mode, the refrigerator compartment receives the higher-temperature refrigerant for cooling, while the freezer compartment uses the lower-temperature refrigerant discharged from the refrigeration evaporator for further cooling. This mode is suitable for operating conditions with large refrigeration loads or relatively low freezing demands, as it fully utilizes the temperature gradient of the refrigerant to improve overall refrigeration efficiency.

[0073] In parallel operation, the refrigeration evaporator and the freezing evaporator are directly connected to the high-pressure side and low-pressure side of the compressor, respectively, and the refrigerant flows independently to both, achieving independent temperature control for the refrigerator and freezer compartments. This mode is suitable for operating conditions where both compartments are under high load or require precise temperature control, enabling independent, uniform, and stable temperatures for both the refrigerator and freezer compartments.

[0074] The refrigerator is equipped with a switching valve, which controls the switching between series and parallel operation modes. Based on changes in the load of the refrigerator and freezer compartments and defrosting requirements, the system can flexibly switch between the two modes to optimize cooling performance, improve energy efficiency, and provide conditions for defrosting control strategies.

[0075] Series-parallel dual-system refrigerators can flexibly adapt to different ambient temperatures and load conditions, improve the temperature uniformity and stability of the refrigerator compartment, improve defrosting control, reduce temperature fluctuations, improve the overall energy efficiency of the refrigeration system, and save energy.

[0076] Of course, it also includes a computer-readable storage medium, which includes a stored computer program, wherein the computer program, when run by a processor, controls the device where the storage medium is located to perform the refrigerator defrosting control method.

[0077] The storage medium contains a computer program. When the program is run by a processor, all the steps of the above-described defrosting control method for the refrigerator compartment can be executed.

[0078] Specifically, the program enables the processor to: determine whether to enter a defrost cycle; when entering a defrost cycle, obtain the current temperature of the refrigerator compartment and compare it with the shutdown point temperature to decide whether to delay defrosting or perform defrosting immediately; and dynamically adjust the start-up and shutdown temperatures in combination with the ambient temperature, refrigerator compartment operating rate, and multiple correction parameters.

[0079] Simultaneously, the program can control the operating status of the compressor and fan before defrosting to ensure the stability of the refrigerator compartment temperature. By deploying this method in software form on a computer-readable storage medium, this invention can not only be easily ported to different models of refrigerator controllers or other refrigeration equipment, but also facilitates subsequent program updates to optimize the control logic, improve the system's flexibility and scalability, thereby achieving efficient implementation and promotion of this invention in practical applications.

[0080] This invention proposes a defrosting control method and optimization strategy for the refrigerator compartment, which can effectively solve the problems of large temperature fluctuations, uneven temperature distribution, and poor food preservation in existing dual-system refrigerators during the defrosting process. By introducing a multi-dimensional judgment and correction mechanism into the defrosting logic, the timing of defrosting is better matched with the operating status of the refrigerator compartment, environmental conditions, and user needs.

[0081] This invention achieves precise control and smooth transition of refrigerator compartment temperature through a complete set of multi-parameter, multi-stage defrosting control strategies, significantly improving temperature uniformity and stability, extending food preservation time, and improving user experience; at the same time, it enhances the adaptability and energy efficiency of the refrigeration system, taking into account both preservation performance and energy saving effect, and has high practical value and promotion prospects.

[0082] By employing a series-parallel refrigeration system structure for both refrigeration and freezing, and prioritizing the determination of whether the refrigerator compartment has reached its shutdown point in the defrosting control logic, the refrigeration system avoids defrosting operations when unnecessary, thereby preventing unnecessary temperature fluctuations. Simultaneously, by dynamically adjusting the refrigerator compartment's shutdown point temperature based on ambient temperature, the system maintains excellent temperature control accuracy and uniformity under various environmental conditions, achieving the technical effect of improved refrigeration and preservation.

[0083] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0084] Although this document uses a number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention. The order of actions, steps, etc., in the apparatus and methods shown in the specification and drawings can be implemented in any order unless otherwise expressly specified, and provided that the output of a preceding process is not used in a subsequent process. Similar sequential terms used for descriptive convenience (e.g., "firstly," "next," "secondly," "again," "then," etc.) do not imply that the actions must be performed in such an order.

[0085] Those skilled in the art will understand that all directional references (e.g., above, below, up, up, down, down, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the drawings to aid the reader's understanding and do not imply (e.g., a limitation on the scope of the invention as defined by the appended claims) a limitation on the scope of the invention as defined by the appended claims. They are merely for the purpose of facilitating the description of this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation. The directional terms "inside" and "outside" refer to inside or outside relative to the outline of the respective component itself.

[0086] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0087] Additionally, some vague terms (e.g., substantially, certain, generally, etc.) may refer to slight inaccuracies or minor deviations in conditions, quantities, values, or dimensions, some of which are within manufacturing tolerances or limits. It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components; unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. A defrosting control method for a refrigerator compartment, characterized in that... ,include: Determine if the defrosting cycle has begun. If so, read the current temperature of the refrigerator compartment and compare it with the set shutdown temperature. If the refrigerator compartment temperature has not reached the shutdown temperature, defrosting will be delayed; If the refrigerator compartment temperature has reached the shutdown temperature, defrosting will begin.

2. The defrosting control method for a refrigerator compartment according to claim 1, characterized in that, The ambient temperature outside the cold storage room is obtained. If the ambient temperature is higher than the preset value, the temperature at the shutdown point is lowered; if the ambient temperature is lower than the preset value, the temperature at the shutdown point is raised.

3. The defrosting control method for a refrigerator compartment according to claim 1, characterized in that, When the operating rate of the refrigerator compartment increases during a refrigeration cycle, the set shutdown point temperature of the refrigerator compartment decreases.

4. The defrosting control method for a refrigerator compartment according to claim 1, characterized in that, During the pre-defrost cooling phase, the refrigerator compartment shutdown temperature T OFF =T ON -T C2 / 2; where T C2 This is a second correction parameter preset based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature; the refrigerator compartment start-up temperature T ON =Set temperature + T C1 / 2; where T C1 The preset start-up temperature correction parameters are based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature.

5. The defrosting control method for a refrigerator compartment according to claim 4, characterized in that, During the strong cooling phase before defrosting, the refrigerator compartment shutdown temperature T OFF =T ON -T C2 / 2-T C3 / 2; where T C3 This is a third correction parameter preset based on the relationship between the set temperature of the refrigerator compartment and the ambient temperature.

6. The defrosting control method for a refrigerator compartment according to claim 5, characterized in that, T OFF =T ON -T C2 / 2-T C3 / 2-T C4 / 2; where T C4 I preset the fourth correction parameter based on the relationship between the set temperature of the refrigerator compartment and the operating rate of the refrigerator compartment.

7. The defrosting control method for a refrigerator compartment according to claim 1, characterized in that, When the refrigerator compartment is shut down at 0 degrees Celsius, the compressor continues to run before defrosting, while the air supply to the refrigerator compartment is stopped.

8. A refrigeration device, characterized in that, The defrosting control method for the refrigerator compartment as described in any one of claims 1 to 7 is adopted.

9. The refrigeration equipment according to claim 8, characterized in that, The refrigeration equipment includes a refrigerator compartment and a freezer compartment. The refrigerant heat exchangers in the refrigerator compartment and the freezer compartment are switched between series and parallel states in the refrigeration system via switching valves.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed by a processor, it controls the device containing the storage medium to perform the defrosting control method for a refrigerator compartment as described in any one of claims 1 to 7.

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