Refrigeration control method, device and refrigeration equipment

Abstract

The present invention discloses a refrigeration control method, device and refrigeration equipment. The method includes: obtaining the initial heat load simulation of the cold storage; judging whether the current unit is frosted; if the unit is frost-free, correcting the initial heat load simulation according to the temperature change rate of the cold storage; if the unit is frosted, correcting the initial heat load simulation according to the inlet and outlet air temperature difference of the air cooler; and controlling the operating frequency of the compressor according to the corrected heat load simulation. Through the present invention, the heat load simulation of the cold storage is accurately determined, and then the compressor frequency is adjusted according to the heat load simulation, so that the refrigeration capacity of the unit matches the heat load, and the storage temperature can be accurately controlled.

Description

Technical Field

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

[0002] With the increasing demand for cold chain in recent years, the requirements for cold storage are also getting higher and higher, especially for cultivation warehouses and vaccine warehouses, which have relatively high temperature requirements and may even fail to maintain the appropriate temperature range for stored objects for a long time, affecting the use of stored objects. The existing temperature control scheme of cold storage adjusts the cooling capacity according to the relationship between the current storage temperature and the set temperature, but does not take into account the impact of the stored objects themselves on the storage temperature, and cannot accurately control and adjust the storage temperature.

[0003] With regard to the problem that the temperature control of cold storage in the prior art is not accurate enough, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present invention provide a refrigeration control method, device and refrigeration equipment to solve the problem that the temperature control of cold storage in the prior art is not accurate enough.

[0005] To solve the above technical problems, the present invention provides a refrigeration control method, wherein the method includes: obtaining an initial heat load simulation of the cold storage; judging whether the current unit is frosted; if the unit is frost-free, correcting the initial heat load simulation according to the temperature change rate of the cold storage; if the unit is frosted, correcting the initial heat load simulation according to the inlet and outlet air temperature difference of the air cooler; and controlling the operating frequency of the compressor according to the corrected heat load simulation.

[0006] Further, obtaining the initial heat load simulation of the cold storage includes: obtaining relevant parameters of the goods in the cold storage; the relevant parameters at least include: the type of goods and the quantity of goods; calculating the initial heat load simulation according to the following formula: Q = Q1 + kQ2; wherein Q1 is the heat load of the goods, Q1 = x1y1 + x2y2 + ... + x n y n , n is the number of types of goods in the cold storage, x is the number of different types of goods, y is the heat load generated by different types, Q2 is the environmental heat load in the cold storage, and k is the correction factor.

[0007] Furthermore, if the unit is frost-free, the initial heat load simulation is corrected according to the temperature change rate of the cold storage, including: adjusting the storage temperature of the cold storage according to the cold load corresponding to the initial heat load simulation; after the change in the storage temperature reaches a preset change, obtaining the temperature change rate during the storage temperature change process; and correcting the initial heat load simulation according to the size of the temperature change rate.

[0008] Furthermore, if the change in the warehouse temperature is a temperature decrease, the initial heat load simulation is corrected according to the size of the temperature change rate, including: if the temperature change rate is in a first rate interval, reducing the initial heat load simulation; if the temperature change rate is in a second rate interval, there is no need to correct the initial heat load simulation; if the temperature change rate is in a third rate interval, increasing the initial heat load simulation.

[0009] Furthermore, if the change in the warehouse temperature is a temperature increase, the initial heat load simulation is corrected according to the magnitude of the temperature change rate, including: increasing the initial heat load simulation according to the magnitude of the temperature change rate; wherein, the greater the temperature change rate, the greater the increase in the initial heat load simulation.

[0010] Furthermore, if there is frost on the unit, the initial heat load simulation is corrected according to the inlet and outlet air temperature difference of the air cooler, including: obtaining the inlet and outlet air temperatures of the air cooler; determining the corresponding cooling capacity attenuation ratio according to the inlet and outlet air temperature difference; determining the cooling capacity before attenuation according to the cooling capacity attenuation ratio; and correcting the initial heat load simulation according to the cooling capacity before attenuation; wherein a corresponding relationship between the cooling capacity and the heat load simulation is preset.

[0011] Further, determining the corresponding cooling capacity attenuation ratio according to the inlet and outlet air temperature difference includes: determining the temperature difference interval corresponding to the inlet and outlet air temperature difference; wherein, a corresponding relationship between different temperature difference intervals and cooling capacity attenuation ratios is preset; and determining the corresponding cooling capacity attenuation ratio according to the temperature difference interval.

[0012] Furthermore, controlling the operating frequency of the compressor according to the corrected heat load simulation comprises: determining the cooling load according to the corrected heat load simulation; determining the corresponding operating frequency according to the cooling load; wherein a corresponding relationship between the cooling load and the operating frequency is preset; and controlling the operation of the compressor according to the operating frequency.

[0013] The present invention also provides a refrigeration control device, wherein the device includes: an acquisition module, used to obtain the initial heat load simulation of the cold storage; a judgment module, used to judge whether the current unit is frosted; a correction module, used to correct the initial heat load simulation according to the temperature change rate of the cold storage when the unit is not frosted; when the unit is frosted, correct the initial heat load simulation according to the inlet and outlet air temperature difference of the air cooler; a control module, used to control the operating frequency of the compressor according to the corrected heat load simulation.

[0014] The present invention further provides a refrigeration device, wherein the refrigeration device comprises: the above-mentioned refrigeration control device.

[0015] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program implements the above method when executed by a processor.

[0016] By applying the technical solution of the present invention, the heat load simulation of the cold storage can be accurately determined. Specifically, the heat load simulation is obtained based on the temperature change rate when the unit is frost-free, and the heat load simulation is obtained based on the inlet and outlet air temperature difference of the air cooler when the unit is frosted. The compressor frequency is then adjusted based on the heat load simulation to match the unit's refrigeration capacity with the heat load, thereby accurately controlling the storage temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flow chart of a refrigeration control method according to an embodiment of the present invention;

[0018] Figure 2 is a flow chart of temperature control of a cold storage according to an embodiment of the present invention;

[0019] Figure 3 4 is a structural block diagram of a refrigeration control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0022] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0024] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0025] The optional embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] Figure 1 is a flow chart of a refrigeration control method according to an embodiment of the present invention. Figure 1 As shown, the method includes the following steps (step S101-step S105):

[0028] Step S101, obtaining the initial heat load simulation value of the cold storage.

[0029] Specifically, obtain the relevant parameters of the goods in the cold storage; the relevant parameters at least include: the type of goods and the quantity of goods; calculate the initial heat load simulation according to the following formula: Q = Q1 + kQ2; where Q1 is the heat load of the goods, Q1 = x1y1 + x2y2 + ... + x n y n , n is the number of types of goods in the cold storage, x is the number of different types of goods, y is the heat load generated by different types, Q2 is the environmental heat load in the cold storage, and k is the correction factor.

[0030] Step S102, determine whether the current unit is frosted; if the unit is not frosted, execute step S103, if the unit is frosted, execute step S104.

[0031] Step S103: if the unit is frost-free, the initial heat load simulation value is corrected according to the temperature change rate of the cold storage.

[0032] When correcting the initial heat load simulation when the unit is frost-free, it can be achieved through the following preferred implementation method: adjusting the storage temperature of the cold storage according to the cold load corresponding to the initial heat load simulation; after the change in storage temperature reaches a preset change, obtaining the temperature change rate during the storage temperature change process; and correcting the initial heat load simulation according to the size of the temperature change rate.

[0033] It should be noted that after adjusting the storage temperature of the cold storage in the refrigeration state, it generally shows a downward trend. After it drops to the preset temperature (or its downward change reaches the preset change), the initial heat load simulation is corrected according to the temperature change rate. In the specific implementation, if the temperature change rate is in the first rate interval (for example: 0.8℃ or more than 0.8℃ in 1 minute), it means that the initial heat load simulation is too large, so the initial heat load simulation is reduced; if the temperature change rate is in the second rate interval (for example: 0.3-0.8℃ in 1 minute), it means that the initial heat load simulation is appropriate, and there is no need to correct the initial heat load simulation; if the temperature change rate is in the third rate interval (for example: 0.3℃ or less than 0.3℃ in 1 minute), it means that the initial heat load simulation is too small, so the initial heat load simulation is increased. Based on this, it is possible to judge whether the initial heat load simulation is appropriate according to the actual change rate of the storage temperature. If it is not appropriate, it is adjusted accordingly to achieve a more accurate heat load simulation.

[0034] However, if the warehouse temperature cannot drop but rises instead, it means that the cold load in the warehouse is far from meeting the cooling demand. In this case, the initial heat load simulation value needs to be corrected according to the temperature change rate.

[0035] That is, if the change in warehouse temperature is a temperature increase, the initial heat load simulation will be increased according to the temperature change rate; the greater the temperature change rate, the greater the increase in the initial heat load simulation, and the two can be preset as a linear relationship or a proportional relationship.

[0036] Step S104: if the unit is frosted, the initial heat load simulation value is corrected according to the inlet and outlet temperature difference of the air cooler.

[0037] When correcting the initial heat load simulation when the unit is frosted, it can be achieved through the following preferred implementation: obtaining the inlet and outlet air temperatures of the air cooler; determining the corresponding cooling capacity attenuation ratio according to the inlet and outlet air temperature difference; determining the cooling capacity before attenuation according to the cooling capacity attenuation ratio; and correcting the initial heat load simulation according to the cooling capacity before attenuation. Among them, a corresponding relationship between cooling capacity and heat load simulation is preset. It should be noted that according to a large number of experimental results and curve analysis, when the unit begins to frost, as the frosting time accumulates, the cooling capacity of the unit will be affected by the thickening of the frost layer. At this time, the curve is close to a straight line that declines in equal proportion, that is, when the frost layer thickens (the supply air temperature difference becomes smaller), the cooling capacity decays in equal proportion.

[0038] In the specific implementation, the temperature difference interval corresponding to the inlet and outlet air temperature difference is determined; wherein, there are preset corresponding relationships between different temperature difference intervals and cooling capacity attenuation ratios; the corresponding cooling capacity attenuation ratio is determined according to the temperature difference interval. Assuming that the inlet and outlet air temperature difference is T, when T = 6 ° C, the cooling capacity attenuation ratio is 0; when T = 0 ° C, the cooling capacity attenuation ratio is 100%, and it is necessary to stop defrosting at this time; when 4 ° C ≤ T ≤ 6 ° C, the cooling capacity attenuation ratio is 0-33%, when 2 ° C ≤ T ≤ 4 ° C, the cooling capacity attenuation ratio is 33-66%, and when 0 ° C ≤ T ≤ 2 ° C, the cooling capacity attenuation ratio is 66-100%. That is, the cooling capacity attenuation ratio can be a value or an optional interval. Based on this, the cooling capacity before attenuation can be determined according to the cooling capacity attenuation ratio, and the initial heat load simulation can be corrected according to the cooling capacity before attenuation to obtain a more accurate heat load simulation.

[0039] Step S105, controlling the operating frequency of the compressor according to the corrected heat load analog value.

[0040] Specifically, it can be achieved through the following preferred implementations: determining the cooling load amount according to the corrected heat load simulation amount; determining the corresponding operating frequency according to the cooling load amount; wherein a corresponding relationship between the cooling load amount and the operating frequency is preset; and controlling the operation of the compressor according to the operating frequency.

[0041] This embodiment can accurately determine the heat load simulation of the cold storage. Specifically, when the unit is frost-free, the heat load simulation is obtained according to the temperature change rate; when the unit is frosted, the heat load simulation is obtained according to the inlet and outlet air temperature difference of the air cooler. The compressor frequency is then adjusted according to the heat load simulation, so that the refrigeration capacity of the unit matches the heat load, and the storage temperature can be accurately controlled.

[0042] Example 2

[0043] Considering that the items stored in the cold storage will cause the heat load to change with the length of storage time, this embodiment accurately calculates the heat load simulation of the cold storage, and then determines the required cold load, and adjusts the compressor frequency accordingly to achieve accurate temperature control. The following is a detailed introduction through embodiments.

[0044] Figure 2 is a flow chart of temperature control of a cold storage according to an embodiment of the present invention. Figure 2 As shown, the process includes:

[0045] 1) In cooling mode, calculate the initial heat load simulation: Q = Q1 + kQ2.

[0046] Where Q1 is the cargo heat load, Q1=x1y1+x2y2+……+x n y n, n is the number of types of goods in the cold storage, x is the number of different types of goods, y is the heat load generated by different types, k is the correction coefficient, Q2 is the environmental heat load in the cold storage, Q2 is affected by ambient temperature, storage temperature, number of operations, etc. The environmental heat load Q2 at least includes: enclosure structure heat, operating equipment heat, ventilation heat, etc.

[0047] 2) If the unit is frost-free, the initial heat load simulation value is corrected according to the temperature change rate of the cold storage. Specifically:

[0048] When raising or lowering the temperature, the relationship between the cooling capacity and the heat load simulation is determined according to the temperature change rate, and the simulation is judged to be accurate and modified. In the process of lowering the temperature, the cold storage temperature is adjusted by the cooling load corresponding to the initial heat load simulation calculated in the early stage.

[0049] When the warehouse temperature drops to the preset temperature, the temperature change rate reaches 0.8℃ in 1 minute. At this time, it is judged that the heat load simulation is too large and it is necessary to check and reduce the heat load simulation; when the temperature change rate slows down to 0.3℃ in 1 minute, it is judged that the heat load simulation is too small and it is necessary to check and increase the heat load simulation; when the temperature change rate drops between 0.3 and 0.8℃ in 1 minute, it is judged that the heat load simulation is appropriate and there is no need to check the heat load simulation.

[0050] After that, the required cooling load of the cold storage is confirmed based on the verified heat load simulation, and the compressor frequency is adjusted accordingly. The heat load of the stored items will change with the storage time. The cooling capacity corresponding to different compressor frequencies has been preset in this solution.

[0051] 3) If the unit is frosted, the initial heat load simulation value is corrected according to the inlet and outlet temperature difference of the air cooler. Specifically:

[0052] When the unit is frosted, the thickness of the frost will affect the wind speed and air supply temperature of the air cooler. At this time, the cooling load cannot be directly determined by calculating the heat load simulation. When the frost layer becomes thicker, the heat exchange capacity of the evaporator decreases, and the inlet and outlet temperature difference gradually becomes smaller. The cooling capacity attenuation ratio is confirmed based on the inlet and outlet temperature difference of the air cooler. When the inlet and outlet temperature difference becomes smaller and smaller, the cooling capacity is also decaying. This embodiment assumes that the inlet and outlet temperature difference is set at 6°C, which is determined according to the performance of the evaporator. The specific attenuation degree is subject to the test results of the specific unit.

[0053] Assuming that the inlet and outlet air temperature difference is T, when T = 6℃, the cooling capacity decay is 0, and when T = 0℃, the cooling capacity decay is 100%, and it is necessary to stop the machine for defrosting. When 4℃≤T≤6℃, the cooling capacity decay ratio may be 0-33% at this time, when 2℃≤T≤4℃, the cooling capacity decay ratio may be 33-66% at this time, and when 0℃≤T≤2℃, the cooling capacity decay ratio may be 66-100%. Substituting the cooling capacity decay ratio can calculate the cooling capacity before decay, and check the heat load simulation of the cold storage according to the cooling capacity before decay to determine the final compressor frequency. After that, it is necessary to judge according to the temperature change rate. If the temperature change rate meets the cooling demand of the set temperature, it will run at this compressor frequency. If it does not meet the requirements, it is necessary to further check the heat load simulation. That is, compared with the frost-free situation, there is an additional correction step in the frost-free situation, which is the supply air temperature difference. After checking the decay ratio, the heat load simulation checked when there is frost needs to be used to perform the frost-free calibration step again.

[0054] This embodiment first calculates the initial heat load simulation related to the quantity and type of stored goods. Then, if the unit is frost-free, the refrigeration capacity is determined based on the temperature change rate of the cold storage. If the unit is frosted, the refrigeration capacity loss is determined by the evaporator inlet and outlet air temperature difference to verify the heat load simulation. The accurate cold load is obtained through the verified heat load simulation, and finally the corresponding compressor frequency is determined through the cold load and adjusted in real time, so as to achieve the purpose of effectively and accurately controlling the storage temperature.

[0055] Example 3

[0056] Corresponds to Figure 1 The refrigeration control method described in this embodiment provides a refrigeration control device, such as Figure 3 The structural block diagram of the refrigeration control device shown in FIG. 1 includes:

[0057] An acquisition module 10 is used to obtain an initial heat load simulation value of the cold storage;

[0058] The judging module 20 is used to judge whether the current unit is frosted;

[0059] The correction module 30 is used to correct the initial heat load simulation value according to the temperature change rate of the cold storage when the unit is frost-free; when the unit is frosted, correct the initial heat load simulation value according to the inlet and outlet temperature difference of the air cooler;

[0060] The control module 40 is used to control the operating frequency of the compressor according to the corrected heat load analog value.

[0061] The specific implementation scheme of the refrigeration control device introduced in this embodiment has been introduced above and will not be repeated here. The refrigeration control device can accurately determine the heat load simulation of the cold storage. Specifically, when the unit is frost-free, the heat load simulation is obtained according to the temperature change rate. When the unit is frosted, the heat load simulation is obtained according to the inlet and outlet temperature difference of the air cooler. Then, the compressor frequency is adjusted according to the heat load simulation, so that the refrigeration capacity of the unit matches the heat load, and the storage temperature can be accurately controlled.

[0062] This embodiment also provides a refrigeration device, wherein the refrigeration device at least includes the refrigeration control device introduced above.

[0063] Example 4

[0064] The embodiment of the present invention provides a software, which is used to execute the technical solutions described in the above embodiment and preferred implementation manner.

[0065] An embodiment of the present invention provides a non-volatile computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the refrigeration control method in any of the above method embodiments.

[0066] The above-mentioned software is stored in the above-mentioned storage medium, which includes but is not limited to: a CD, a floppy disk, a hard disk, an erasable memory, etc.

[0067] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0068] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A refrigeration control method, characterized in that: The method comprises: Get the initial heat load simulation of the cold storage; Determine whether the current unit is frosted; If the unit is frost-free, the initial heat load simulation is corrected according to the temperature change rate of the cold storage; including: adjusting the cold storage temperature according to the cold load corresponding to the initial heat load simulation; after the change in the storage temperature reaches a preset change, obtaining the temperature change rate during the storage temperature change process; correcting the initial heat load simulation according to the size of the temperature change rate; If the unit is frosted, the initial heat load simulation value is corrected according to the inlet and outlet air temperature difference of the air cooler; The operating frequency of the compressor is controlled according to the corrected heat load analog quantity.

2. The method according to claim 1, characterized in that Get the initial heat load simulation of the cold storage, including: Obtain relevant parameters of the goods in the cold storage; the relevant parameters at least include: the type of goods and the quantity of goods; The initial heat load simulation quantity is calculated according to the following formula: Q=Q1+kQ2; Where Q1 is the cargo heat load, Q1=x1y1+x2y2+……+x n y n , n is the number of types of goods in the cold storage, x is the number of different types of goods, y is the heat load generated by different types, Q2 is the environmental heat load in the cold storage, and k is the correction factor.

3. The method according to claim 1, characterized in that If the change in the warehouse temperature is a decrease in temperature, the initial heat load simulation value is corrected according to the magnitude of the temperature change rate, including: If the temperature change rate is in the first rate interval, reducing the initial heat load simulation amount; If the temperature change rate is in the second rate interval, there is no need to correct the initial heat load simulation value; If the temperature change rate is in the third rate interval, the initial heat load simulation amount is increased.

4. The method according to claim 1, characterized in that: If the change in the warehouse temperature is a temperature increase, the initial heat load simulation value is corrected according to the magnitude of the temperature change rate, including: The initial heat load simulation quantity is increased according to the magnitude of the temperature change rate; wherein, the greater the temperature change rate, the greater the increase in the initial heat load simulation quantity.

5. The method according to claim 1, characterized in that If the unit is frosted, the initial heat load simulation value is corrected according to the inlet and outlet temperature difference of the air cooler, including: Get the inlet and outlet air temperatures of the air cooler; Determine the corresponding cooling capacity attenuation ratio according to the inlet and outlet air temperature difference; Determining the cooling capacity before attenuation according to the cooling capacity attenuation ratio; The initial heat load simulation quantity is corrected according to the cooling capacity before attenuation; wherein a corresponding relationship between the cooling capacity and the heat load simulation quantity is preset.

6. The method according to claim 5, characterized in that Determining a corresponding cooling capacity attenuation ratio according to the inlet and outlet air temperature difference includes: Determine the temperature difference interval corresponding to the inlet and outlet air temperature difference; wherein, the corresponding relationship between different temperature difference intervals and cooling capacity attenuation ratios is preset; The corresponding cooling capacity attenuation ratio is determined according to the temperature difference range.

7. The method according to any one of claims 1 to 6, characterized in that The operating frequency of the compressor is controlled according to the corrected heat load simulation, including: Determine the cooling load amount based on the corrected heat load simulation amount; Determine the corresponding operating frequency according to the cooling load; wherein a corresponding relationship between the cooling load and the operating frequency is preset; The operation of the compressor is controlled according to the operating frequency.

8. A refrigeration control device, used to implement the refrigeration control method according to any one of claims 1 to 7, characterized in that: The device comprises: An acquisition module is used to obtain the initial heat load simulation value of the cold storage; A judgment module is used to judge whether the current unit is frosted; A correction module, used to correct the initial heat load simulation value according to the temperature change rate of the cold storage when the unit is frost-free; and to correct the initial heat load simulation value according to the inlet and outlet temperature difference of the air cooler when the unit is frosted; The control module is used for controlling the operating frequency of the compressor according to the corrected heat load analog quantity.

9. A refrigeration device, characterized in that: The refrigeration equipment comprises: the refrigeration control device according to claim 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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