Electric cabinet internal temperature control method and device, refrigeration equipment and storage medium

Abstract

The invention relates to an electric cabinet internal temperature control method and device, refrigeration equipment and a storage medium. The method comprises the steps that when the internal temperature of the electric cabinet is smaller than or equal to a temperature threshold value, an opening degree adjusting scheme of a proportioning valve is determined according to the internal temperature of the electric cabinet, and the opening degree of the proportioning valve is adjusted according to the opening degree adjusting scheme, the oil separator is controlled to provide high-temperature lubricating oil for the heat exchanger in the electric control box through the proportioning valve for heat exchange treatment, so that the temperature in the electric control box is increased, condensate water is prevented from appearing in the electric control box, generation of the condensate water can be effectively prevented, and the problem that generation of the condensate water in the electric control box is difficult to effectively prevent in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature control equipment, and in particular to an internal temperature control method and device for an electric control box, a refrigeration device, and a storage medium. BACKGROUND

[0002] As the most common refrigeration equipment, screw water chillers are widely used in refrigeration places such as office buildings, factories, and teaching buildings.

[0003] The on-board electric control box, as an important component of the screw machine, is widely used for controlling and protecting various electrical components. However, in the actual operation process, due to the difference in regions and the dramatic change in environmental temperature and humidity, combined with the fact that the electric control box generally uses metal materials, the metal materials with high thermal conductivity are more likely to quickly cool down, causing the metal surface temperature to be lower than the dew point temperature. Condensed water inevitably appears in the electric control box, and the water vapor in the air condenses into liquid water on the metal surface or electrical components in the electric control box. The condensed water forms a conductive path between the circuit board, the wiring terminal, or the components, which easily causes a short circuit, resulting in abnormal operation or even damage of the equipment.

[0004] At present, many electric control boxes still use simple ventilation and heat dissipation, which is difficult to effectively prevent the generation of condensed water. Therefore, there is an urgent need for a device that can realize intelligent control of the temperature in the electric control box, thereby effectively preventing the formation of condensed water and ensuring the safe and stable operation of the equipment. SUMMARY

[0005] The present application provides an internal temperature control method and device for an electric control box, a refrigeration device, and a storage medium to solve the problem that the prior art cannot effectively prevent the generation of condensed water in the electric control box.

[0006] In a first aspect, the present application provides an internal temperature control method for an electric control box, the method comprising:

[0007] obtaining an internal temperature of the electric control box;

[0008] when the internal temperature of the electric control box is less than or equal to a temperature threshold, determining an opening degree adjustment scheme of a proportional control valve according to the internal temperature of the electric control box, wherein the proportional control valve is arranged on a connecting pipeline between an output end of an oil separator and an internal heat exchanger of the electric control box;

[0009] adjusting the opening degree of the proportional control valve according to the opening degree adjustment scheme, wherein the oil separator provides high-temperature lubricating oil for the heat exchanger through the proportional control valve to increase the internal temperature of the electric control box.

[0010] Optionally, the determination of the opening degree adjustment scheme of the proportional control valve according to the internal temperature of the electric control box comprises:

[0011] Determine an opening degree adjustment scheme of the proportional adjustment valve according to a temperature difference between the temperature threshold and the temperature inside the electric control box.

[0012] Optionally, determining the opening degree adjustment scheme of the proportional adjustment valve according to the temperature difference between the temperature threshold and the temperature inside the electric control box comprises:

[0013] When the temperature difference is less than or equal to a first preset difference, determine a first adjustment scheme as the opening degree adjustment scheme of the proportional adjustment valve, wherein the first adjustment scheme is used to control the opening degree of the proportional adjustment valve at a first opening degree.

[0014] When the temperature difference is greater than the first preset difference, determine a second adjustment scheme as the opening degree adjustment scheme of the proportional adjustment valve, wherein the second adjustment scheme is used to control the opening degree of the proportional adjustment valve to superimpose a first opening degree change amount on a second opening degree according to a first preset interval.

[0015] Optionally, when the temperature difference is greater than the first preset difference, determining the second adjustment scheme as the opening degree adjustment scheme of the proportional adjustment valve comprises:

[0016] When the temperature difference is greater than the first preset difference, determine the second opening degree according to a preset opening degree corresponding to a current ambient temperature.

[0017] Determine the second adjustment scheme as the opening degree adjustment scheme of the proportional adjustment valve.

[0018] Optionally, determining the opening degree adjustment scheme of the proportional adjustment valve according to the temperature inside the electric control box comprises:

[0019] Determine a temperature change rate according to the temperature inside the electric control box obtained within a preset time length.

[0020] Determine the opening degree adjustment scheme of the proportional adjustment valve according to the temperature change rate.

[0021] Optionally, determining the opening degree adjustment scheme of the proportional adjustment valve according to the temperature change rate comprises:

[0022] When the temperature change rate is greater than or equal to a preset change rate, determine a third adjustment scheme as the opening degree adjustment scheme of the proportional adjustment valve, wherein the third adjustment scheme is used to decrease a second opening degree change amount according to a second preset interval.

[0023] When the temperature change rate is less than the preset change rate, determine a fourth adjustment scheme as the opening degree adjustment scheme of the proportional adjustment valve, wherein the fourth adjustment scheme is used to increase a third opening degree change amount according to a third preset interval.

[0024] Optionally, before the opening degree adjustment scheme of the proportional regulating valve is determined according to the internal temperature of the electric control box when the internal temperature of the electric control box is less than or equal to the temperature threshold, the method further comprises:

[0025] acquiring historical data, wherein the historical data comprises historical operating parameters and historical environmental data;

[0026] determining a mapping relationship between preset working conditions and temperature thresholds and preset change rates according to the historical data;

[0027] determining a temperature threshold and a preset change rate currently corresponding to the internal temperature of the electric control box based on the mapping relationship.

[0028] In a second aspect, the present application provides an internal temperature control device of an electric control box, the device comprising:

[0029] an acquiring module configured to acquire an internal temperature of an electric control box;

[0030] a determining module configured to determine an opening degree adjustment scheme of a proportional regulating valve according to the internal temperature of the electric control box when the internal temperature of the electric control box is less than or equal to a temperature threshold, wherein the proportional regulating valve is arranged on a connecting pipeline between an output end of an oil separator and an internal heat exchanger of the electric control box;

[0031] a control module configured to adjust the opening degree of the proportional regulating valve according to the opening degree adjustment scheme, wherein the oil separator provides high-temperature lubricating oil for the heat exchanger through the proportional regulating valve to increase the internal temperature of the electric control box.

[0032] In a third aspect, the present application provides a refrigeration equipment, comprising a refrigeration unit and an internal temperature control device of an electric control box according to claim 8, wherein the refrigeration unit comprises a compressor, an oil separator, a condenser, a throttling element, an evaporator and an electric control box, the electric control box is provided with a heat exchanger, an input end of the heat exchanger is connected with an output end of the oil separator through a proportional regulating valve, an output end of the heat exchanger is connected with an input end of the compressor, an output end of the compressor is connected with an input end of the oil separator, and an output end of the oil separator is also connected with the input end of the compressor and an input end of the condenser respectively, and an output end of the condenser is connected with the input end of the compressor in sequence through the throttling element and the evaporator.

[0033] The electric control box internal temperature control device is configured to determine an opening degree adjustment scheme of a proportional adjusting valve according to the electric control box internal temperature when the electric control box internal temperature is less than or equal to a temperature threshold, wherein the proportional adjusting valve is arranged on a connecting pipeline between an output end of an oil separator and an electric control box internal heat exchanger; and the opening degree of the proportional adjusting valve is adjusted according to the opening degree adjustment scheme, wherein the oil separator provides high-temperature lubricating oil for the heat exchanger through the proportional adjusting valve to increase the electric control box internal temperature.

[0034] In a fourth aspect, the present application also provides a computer storage medium storing computer executable instructions for executing the electric control box internal temperature control method.

[0035] The above technical solution provided by the embodiments of the present application has the following advantages compared with the prior art: the method provided by the embodiments of the present application acquires the electric control box internal temperature; when the electric control box internal temperature is less than or equal to a temperature threshold, an opening degree adjustment scheme of a proportional adjusting valve is determined according to the electric control box internal temperature, wherein the proportional adjusting valve is arranged on a connecting pipeline between an output end of an oil separator and an electric control box internal heat exchanger; and the opening degree of the proportional adjusting valve is adjusted according to the opening degree adjustment scheme, wherein the oil separator provides high-temperature lubricating oil for the heat exchanger through the proportional adjusting valve to increase the electric control box internal temperature.

[0036] Based on the above method, when the electric control box internal temperature is less than or equal to a temperature threshold, an opening degree adjustment scheme of a proportional adjusting valve is determined according to the electric control box internal temperature, the opening degree of the proportional adjusting valve is adjusted according to the opening degree adjustment scheme, and the oil separator provides high-temperature lubricating oil for the heat exchanger in the electric control box through the proportional adjusting valve for heat exchange treatment to increase the electric control box internal temperature, thereby avoiding the generation of condensate water in the electric control box, effectively preventing the generation of condensate water, and solving the problem that the prior art cannot effectively prevent the generation of condensate water in the electric control box. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate one embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, brief introductions will be given to the drawings needed to be used in the embodiments or prior art descriptions. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0039] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0040] Figure 1 An application environment diagram of a method for controlling the internal temperature of an electrical control box provided in this application embodiment;

[0041] Figure 2 This is a schematic diagram of the internal structure of a refrigeration unit provided in an embodiment of this application;

[0042] Figure 3 A schematic flowchart illustrating a method for controlling the internal temperature of an electrical control box, provided in an embodiment of this application;

[0043] Figure 4 A schematic flowchart illustrating a method for controlling the internal temperature of an electrical control box, provided in an embodiment of this application;

[0044] Figure 5 A structural block diagram of an internal temperature control device for an electrical control box provided in an embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the internal structure of a refrigeration device provided in an embodiment of this application. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0048] Figure 1 This is an application environment diagram of the temperature control method inside the electrical control box in one embodiment. (Refer to...) Figure 1 The temperature control method inside this electrical control box is applied to refrigeration equipment. (Refer to...) Figure 2The refrigeration equipment includes a refrigeration unit 110 and a temperature control device 120 inside an electrical control box. The refrigeration unit 110 includes a compressor A, an oil separator B, a condenser C, a throttling element D, an evaporator E, and an electrical control box G. The electrical control box G is equipped with a heat exchanger F. The input end of the heat exchanger F is connected to the output end of the oil separator B through a proportional regulating valve H. The output end of the heat exchanger F is connected to the input end of the compressor A. The output end of the compressor A is connected to the input end of the oil separator B. The output end of the oil separator B is also connected to the input end of the compressor A and the input end of the condenser C, respectively. The output end of the condenser C is connected to the input end of the compressor A in sequence through the throttling element D and the evaporator E.

[0049] The internal temperature control device 120 of the electrical control box is used to determine the opening adjustment scheme of the proportional regulating valve H according to the internal temperature of the electrical control box G when the internal temperature of the electrical control box G is less than or equal to a temperature threshold. The proportional regulating valve H is located on the connecting pipeline between the output end of the oil separator B and the heat exchanger F inside the electrical control box G. The opening of the proportional regulating valve H is adjusted according to the opening adjustment scheme. The oil separator B provides high-temperature lubricating oil to the heat exchanger F through the proportional regulating valve H to increase the internal temperature of the electrical control box G.

[0050] Specifically, after compressor A completes the compression process, it discharges a mixture of refrigerant and high-temperature lubricating oil. This mixture enters oil separator B through exhaust pipe 1 for separation, with most of the separated lubricating oil flowing into the return oil main pipe 2. The return oil main pipe 2 has two paths: one returns to compressor A via return oil line 4, and the other, return oil line 3, enters heat exchanger F inside the electrical control box G. This heat exchanger exchanges heat with the control box G, increasing its internal temperature and preventing condensation. A finned heat exchanger is used. Temperature sensors are installed inside the control box G to detect its internal temperature. These sensors are located in key positions within the control box G, such as near electrical components or in areas with poor air circulation, to ensure accurate reflection of the actual internal temperature. The lubricating oil, after heat exchange in heat exchanger F, also returns to compressor A, increasing the temperature inside the control box G while simultaneously reducing the temperature of the lubricating oil, thus improving the unit's operating efficiency.

[0051] For the refrigeration unit 110, the lubricating oil at the outlet of the oil separator B is at a high temperature and is considered useless waste heat. This heat can be recovered by opening the proportional control valve H to heat the internal temperature of the electrical control box G. This not only prevents condensation from forming inside the electrical control box G, but also avoids the risk of reduced unit reliability due to long-term high exhaust temperature of the refrigeration unit 110.

[0052] In one embodiment, Figure 3 This is a flowchart illustrating a temperature control method for an electrical control box G in one embodiment, with reference to...Figure 3 A method for temperature control inside an electrical control box G is provided. This embodiment mainly applies this method to the above-mentioned... Figure 1 Taking the internal temperature control device 120 of the electrical control box as an example, the specific temperature control method of the electrical control box G includes the following steps:

[0053] Step S210: Obtain the internal temperature of the electrical control box G.

[0054] Specifically, the internal temperature of the electrical control box G is obtained through a temperature sensor inside the electrical control box G, which is located within the refrigeration unit 110.

[0055] Step S220: When the internal temperature of the electrical control box G is less than or equal to the temperature threshold, determine the opening adjustment scheme of the proportional regulating valve H according to the internal temperature of the electrical control box G, wherein the proportional regulating valve H is located on the connecting pipeline between the output end of the oil separator B and the heat exchanger F inside the electrical control box G.

[0056] Specifically, the internal temperature of the electrical control box G is compared with the temperature threshold to determine whether condensation will occur inside the electrical control box G. When the internal temperature of the electrical control box G is less than or equal to the temperature threshold, it indicates that the internal temperature of the electrical control box G is too low and condensation is about to occur inside the electrical control box G. It is necessary to open the proportional regulating valve H on the pipeline between the electrical control box G and the oil separator B. Further, the opening adjustment scheme of the proportional regulating valve H is determined based on the internal temperature of the electrical control box G. The opening adjustment scheme is used to control the opening degree or opening adjustment method of the proportional regulating valve H.

[0057] When the internal temperature of the electrical control box G is greater than the temperature threshold, it indicates that the internal temperature of the electrical control box G is too high and condensation will not occur. Therefore, there is no need to open the proportional control valve H, and the proportional control valve H is kept in the closed state.

[0058] Step S230: Adjust the opening of the proportional control valve H according to the opening adjustment scheme, wherein the oil separator B provides high-temperature lubricating oil to the heat exchanger F through the proportional control valve H to increase the internal temperature of the electrical control box G.

[0059] Specifically, the opening of the proportional control valve H is controlled according to the opening adjustment scheme, thereby recovering the high-temperature lubricating oil output from the oil separator B to the heat exchanger F in the electrical control box G for heat exchange, so as to increase the internal temperature of the electrical control box G and reduce the temperature of the lubricating oil. This not only prevents condensation from occurring inside the electrical control box G, but also avoids the risk of reduced unit reliability of the refrigeration unit 110 due to long-term high exhaust temperature. This solves the problem that existing technologies cannot effectively prevent the generation of condensate in the electrical control box G.

[0060] In one embodiment, the method for determining the opening adjustment scheme of the proportional control valve H based on the internal temperature of the electrical control box G includes:

[0061] The opening adjustment scheme of the proportional control valve H is determined based on the temperature difference between the temperature threshold and the internal temperature of the electrical control box G.

[0062] Specifically, refer to Figure 4 The opening adjustment scheme of the proportional control valve H is determined based on the temperature difference between the temperature threshold and the internal temperature of the electrical control box G. The temperature threshold is denoted as Tx, the internal temperature of the electrical control box G is denoted as T1, and the temperature difference is ΔT = Tx - T1. A smaller temperature difference indicates a lighter degree of condensation, meaning condensation is just beginning or about to occur. In this case, it is not necessary to control the proportional control valve H to open it more fully; only a small amount of high-temperature lubricating oil needs to be transferred into the electrical control box G to prevent condensation. Conversely, a larger temperature difference indicates a heavier degree of condensation, requiring the proportional control valve H to open more fully to transfer more high-temperature lubricating oil into the electrical control box G for heat exchange, thereby rapidly increasing the internal temperature of the electrical control box G. Therefore, different opening adjustment schemes are selected for different temperature differences to achieve a rapid increase in the internal temperature of the electrical control box G.

[0063] In one embodiment, determining the opening adjustment scheme of the proportional control valve H based on the temperature difference between the temperature threshold and the internal temperature of the electrical control box G includes:

[0064] When the temperature difference is less than or equal to a first preset difference, the first adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the first adjustment scheme is used to control the opening of the proportional control valve H according to the first opening.

[0065] When the temperature difference is greater than the first preset difference, the second adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the second adjustment scheme is used to control the opening of the proportional control valve H to be superimposed with the first opening change amount according to the first preset interval based on the second opening.

[0066] Specifically, when the temperature difference is less than or equal to the first preset difference, it means that the internal temperature of the electrical control box G is close to the temperature threshold. Therefore, by controlling the opening of the proportional regulating valve H according to the smaller opening of the first opening, only a small amount of high-temperature lubricating oil needs to be transmitted to the electrical control box G to prevent condensation from occurring inside the electrical control box G.

[0067] When the temperature difference is greater than the first preset difference, it indicates that the internal temperature of the electrical control box G deviates significantly from the temperature threshold, meaning that the internal temperature of the electrical control box G is low. Therefore, based on the second opening degree, the opening degree of the proportional control valve H is gradually increased by superimposing the first opening degree change amount at the first preset interval. The second opening degree is greater than or equal to the first opening degree, so as to gradually increase the content of high-temperature lubricating oil entering the electrical control box G, thereby accelerating the temperature rise rate of the internal temperature of the electrical control box G.

[0068] In one embodiment, when the temperature difference is greater than the first preset difference, the second adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, including:

[0069] When the temperature difference is greater than the first preset difference, the second opening degree is determined according to the preset opening degree corresponding to the current ambient temperature.

[0070] The second adjustment scheme is determined to be the opening adjustment scheme of the proportional control valve H.

[0071] Specifically, when the temperature difference exceeds the first preset difference value, the current operating condition of the refrigeration unit 110 is determined based on the current ambient temperature. Different ambient temperatures correspond to different second opening degrees. For example, in spring, when the temperature is higher, the corresponding preset opening degree is smaller, requiring only a small amount of high-temperature lubricating oil to prevent condensation in the electrical control box G. In winter, when the temperature is lower, the corresponding preset opening degree is larger, requiring more high-temperature lubricating oil to prevent condensation in the electrical control box G. Therefore, the initial second opening degree is determined based on the current ambient temperature. Then, based on the second opening degree, the change in the first opening degree is increased every first preset interval, thereby gradually increasing the flow rate of high-temperature lubricating oil entering the electrical control box G for heat exchange, thus rapidly increasing the internal temperature of the electrical control box G and preventing condensation from forming inside the electrical control box G.

[0072] In one embodiment, the method for determining the opening adjustment scheme of the proportional control valve H based on the internal temperature of the electrical control box G includes:

[0073] The temperature change rate is determined based on the internal temperature of the electrical control box G obtained within a preset time period;

[0074] The opening adjustment scheme of the proportional control valve H is determined based on the temperature change rate.

[0075] Specifically, refer to Figure 4 It can also determine the temperature change rate based on the internal temperatures of multiple electrical control boxes G continuously acquired within a preset time period, thereby determining the temperature change trend, and based on the temperature change trend, more accurately determine the opening adjustment scheme of the proportional control valve H.

[0076] A large temperature change rate indicates that the system temperature is changing rapidly, which may lead to unstable equipment operation. For example, if the internal temperature of the electrical control box G suddenly drops sharply, adjusting the opening of the proportional valve based on the temperature change rate can promptly increase the flow of high-temperature lubricating oil to prevent the temperature from dropping too low. Conversely, if the internal temperature of the electrical control box G rises rapidly, reducing the flow of high-temperature lubricating oil can prevent the temperature from continuing to surge, keeping the system temperature within a relatively stable range and improving user comfort.

[0077] Adjusting the proportional valve opening based on the rate of temperature change can smooth out temperature changes and reduce thermal stress. When the temperature of the electrical control box G changes rapidly, the difference in the degree of thermal expansion and contraction of its internal components is large, which can easily cause wear. However, by properly adjusting the opening of the proportional valve, the operating temperature of the electrical control box G can be stabilized, reducing wear and extending the service life of the electrical control box G.

[0078] In one embodiment, determining the opening adjustment scheme of the proportional control valve H based on the temperature change rate includes:

[0079] When the temperature change rate is greater than or equal to the preset change rate, the third adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the third adjustment scheme is used to reduce the second opening change amount according to the second preset interval;

[0080] When the temperature change rate is less than the preset change rate, the fourth adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the fourth adjustment scheme is used to increase the third opening change amount according to the third preset interval.

[0081] Specifically, the temperature change rate is the temperature rise rate. When the temperature change rate is greater than or equal to the preset change rate, it indicates that the temperature inside the electrical control box G is rising too fast and exceeds the ideal range. This means that the opening of the proportional control valve H is too large and the opening of the proportional control valve H needs to be appropriately reduced. Therefore, based on the current opening of the proportional control valve H, the second opening change amount is reduced every second preset interval to gradually reduce the opening of the proportional control valve H in order to avoid the temperature rising too fast and causing the equipment to overheat.

[0082] When the rate of temperature change is less than the preset rate of change, it indicates that the temperature rise rate inside the electrical control box G is too slow and below the ideal range. This means that the opening of the current regulating valve is too small, and the opening of the proportional regulating valve H needs to be increased appropriately to accelerate the temperature rise and allow the temperature inside the electrical control box G to reach the ideal temperature as soon as possible. If the rate of temperature change is within the ideal range, the opening of the proportional regulating valve H should be kept unchanged to maintain the temperature inside the electrical control box G in a stable state.

[0083] In one embodiment, before determining the opening adjustment scheme of the proportional control valve H based on the internal temperature of the electrical control box G when the internal temperature of the electrical control box G is less than or equal to a temperature threshold, the method further includes:

[0084] Acquire historical data, which includes historical operating parameters and historical environmental data;

[0085] Based on the historical data, determine the mapping relationship between the preset operating conditions and the temperature threshold and preset conversion rate;

[0086] Based on the mapping relationship, the current temperature threshold and preset rate of change corresponding to the internal temperature of the electrical control box G are determined.

[0087] Specifically, historical operating parameters include the internal temperature of the electrical control box G, the rate of temperature change, the opening degree of the proportional control valve H, and the operating mode. The operating modes include cooling mode, heating mode, and dehumidification mode. Historical environmental data includes indoor and outdoor temperature and humidity.

[0088] Machine learning or data mining techniques are used to analyze collected historical data. For example, algorithms such as multiple linear regression, decision trees, and neural networks can be used to find the relationship between different operating conditions (combinations of factors such as temperature, humidity, and load) and temperature thresholds and preset change rates. Taking neural networks as an example, historical operating condition data can be used as the input layer, and the corresponding temperature thresholds and preset change rates can be used as the output layer. By training the network with a large amount of data, it can learn the mapping relationship between operating conditions and control parameters.

[0089] The ambient temperature varies significantly across different seasons, resulting in different system heat loads and cooling / heating requirements. For example, in summer, due to the high outdoor temperature, the temperature threshold can be appropriately increased to reduce the frequency of condensation entering the anti-condensation mechanism inside the electrical control box G; while in winter, due to the low outdoor temperature, the temperature threshold can be decreased to ensure that the internal temperature of the electrical control box G can be raised in a timely manner to prevent condensation from forming inside the electrical control box G.

[0090] Therefore, based on the current ambient temperature, current operating parameters, and mapping relationship, the current temperature threshold and preset change rate corresponding to the internal temperature of the electrical control box G can be determined. The current operating parameters include the operating mode and the current internal temperature of the electrical control box G. In this way, the specific values ​​of the temperature threshold and preset change rate can be automatically adjusted according to historical data and environmental changes, thereby achieving more efficient, stable, and energy-saving operation of the refrigeration equipment.

[0091] Figure 3 and Figure 4 This is a flowchart illustrating the temperature control method within the electrical control box G in one embodiment. It should be understood that, although... Figure 3 and Figure 4 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 3 and Figure 4At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0092] In one embodiment, such as Figure 5 As shown, an internal temperature control device 120 for an electrical control box is provided, comprising:

[0093] The acquisition module 310 is used to acquire the internal temperature of the electrical control box G;

[0094] The determining module 320 is used to determine the opening adjustment scheme of the proportional regulating valve H according to the internal temperature of the electrical control box G when the internal temperature of the electrical control box G is less than or equal to the temperature threshold. The proportional regulating valve H is located on the connecting pipeline between the output end of the oil separator B and the heat exchanger F inside the electrical control box G.

[0095] The control module 330 is used to adjust the opening of the proportional control valve H according to the opening adjustment scheme, wherein the oil separator B provides high-temperature lubricating oil to the heat exchanger F through the proportional control valve H to increase the internal temperature of the electrical control box G.

[0096] In one embodiment, the determining module 320 is further configured to:

[0097] The opening adjustment scheme of the proportional control valve H is determined based on the temperature difference between the temperature threshold and the internal temperature of the electrical control box G.

[0098] In one embodiment, the determining module 320 is further configured to:

[0099] When the temperature difference is less than or equal to a first preset difference, the first adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the first adjustment scheme is used to control the opening of the proportional control valve H according to the first opening.

[0100] When the temperature difference is greater than the first preset difference, the second adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the second adjustment scheme is used to control the opening of the proportional control valve H to be superimposed with the first opening change amount according to the first preset interval based on the second opening.

[0101] In one embodiment, the determining module 320 is further configured to:

[0102] When the temperature difference is greater than the first preset difference, the second opening degree is determined according to the preset opening degree corresponding to the current ambient temperature.

[0103] The second adjustment scheme is determined to be the opening adjustment scheme of the proportional control valve H.

[0104] In one embodiment, the determining module 320 is further configured to:

[0105] The temperature change rate is determined based on the internal temperature of the electrical control box G obtained within a preset time period;

[0106] The opening adjustment scheme of the proportional control valve H is determined based on the temperature change rate.

[0107] In one embodiment, the determining module 320 is further configured to:

[0108] When the temperature change rate is greater than or equal to the preset change rate, the third adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the third adjustment scheme is used to reduce the second opening change amount according to the second preset interval;

[0109] When the temperature change rate is less than the preset change rate, the fourth adjustment scheme is determined as the opening adjustment scheme of the proportional control valve H, wherein the fourth adjustment scheme is used to increase the third opening change amount according to the third preset interval.

[0110] In one embodiment, the determining module 320 is further configured to:

[0111] Acquire historical data, which includes historical operating parameters and historical environmental data;

[0112] Based on the historical data, determine the mapping relationship between the preset operating conditions and the temperature threshold and preset conversion rate;

[0113] Based on the mapping relationship, the current temperature threshold and preset rate of change corresponding to the internal temperature of the electrical control box G are determined.

[0114] like Figure 6 As shown, this application provides a refrigeration device, including a processor 711, a communication interface 712, a memory 713, and a communication bus 714, wherein the processor 711, the communication interface 712, and the memory 713 communicate with each other through the communication bus 714.

[0115] Memory 713 is used to store computer programs;

[0116] The processor 711, when executing the program stored in the memory 713, implements the temperature control method inside the electrical control box G provided in any of the aforementioned method embodiments.

[0117] Those skilled in the art will understand that Figure 6The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the refrigeration equipment to which the present application is applied. Specific refrigeration equipment may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0118] In one embodiment, the internal temperature control device 120 of the electrical control box provided in this application can be implemented as a computer program, which can be implemented in various ways, such as... Figure 6 The refrigeration equipment shown operates on this device. The memory of the refrigeration equipment can store various program modules that make up the internal temperature control device 120 of the electrical control box, for example, Figure 5 The acquisition module 310, determination module 320, and control module 330 are shown. The computer program composed of these modules causes the processor to execute the temperature control method for the electrical control box G described in the various embodiments of this application.

[0119] Figure 6 The refrigeration equipment shown can be used as follows Figure 5 The acquisition module 310 in the temperature control device 120 of the electrical control box shown acquires the internal temperature of the electrical control box G. The refrigeration equipment can, through the determination module 320, determine the opening adjustment scheme of the proportional regulating valve H based on the internal temperature of the electrical control box G when the internal temperature is less than or equal to a temperature threshold. The proportional regulating valve H is located on the connecting pipe between the output end of the oil separator B and the heat exchanger F inside the electrical control box G. The refrigeration equipment can execute the control module 330.

[0120] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the temperature control method for the electrical control box G provided in any of the foregoing method embodiments.

[0121] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0122] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a cooling device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0123] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that alternatives or substitutions may be used.

[0124] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling the internal temperature of an electrical control box, characterized in that, The method includes: Obtain the internal temperature of the electrical control box; When the internal temperature of the electrical control box is less than or equal to a temperature threshold, the opening adjustment scheme of the proportional regulating valve is determined according to the internal temperature of the electrical control box. The proportional regulating valve is located on the connecting pipeline between the output end of the oil separator and the heat exchanger inside the electrical control box. The opening of the proportional control valve is adjusted according to the opening adjustment scheme, wherein the oil separator provides high-temperature lubricating oil to the heat exchanger through the proportional control valve to increase the internal temperature of the electrical control box.

2. The method according to claim 1, characterized in that, The scheme for adjusting the opening degree of the proportional control valve based on the internal temperature of the electrical control box includes: The opening adjustment scheme of the proportional control valve is determined based on the temperature difference between the temperature threshold and the internal temperature of the electrical control box.

3. The method according to claim 2, characterized in that, The opening adjustment scheme of the proportional control valve is determined based on the temperature difference between the temperature threshold and the internal temperature of the electrical control box, including: When the temperature difference is less than or equal to a first preset difference, the first adjustment scheme is determined as the opening adjustment scheme of the proportional control valve, wherein the first adjustment scheme is used to control the opening of the proportional control valve according to the first opening. When the temperature difference is greater than the first preset difference, the second adjustment scheme is determined as the opening adjustment scheme of the proportional control valve, wherein the second adjustment scheme is used to control the opening of the proportional control valve to be superimposed with the first opening change amount according to the first preset interval based on the second opening.

4. The method according to claim 3, characterized in that, When the temperature difference is greater than the first preset difference, the second adjustment scheme is determined as the opening adjustment scheme of the proportional control valve, including: When the temperature difference is greater than the first preset difference, the second opening degree is determined according to the preset opening degree corresponding to the current ambient temperature. The second adjustment scheme is determined to be the opening adjustment scheme of the proportional control valve.

5. The method according to claim 1, characterized in that, The scheme for adjusting the opening degree of the proportional control valve based on the internal temperature of the electrical control box includes: The temperature change rate is determined based on the internal temperature of the electrical control box obtained within a preset time period; The opening adjustment scheme of the proportional control valve is determined based on the temperature change rate.

6. The method according to claim 5, characterized in that, The scheme for determining the opening adjustment of the proportional control valve based on the temperature change rate includes: When the temperature change rate is greater than or equal to the preset change rate, the third adjustment scheme is determined as the opening adjustment scheme of the proportional control valve, wherein the third adjustment scheme is used to reduce the second opening change amount according to the second preset interval; When the temperature change rate is less than the preset change rate, the fourth adjustment scheme is determined as the opening adjustment scheme of the proportional control valve, wherein the fourth adjustment scheme is used to increase the third opening change amount according to the third preset interval.

7. The method according to claim 6, characterized in that, Before determining the opening adjustment scheme of the proportional control valve based on the internal temperature of the electrical control box when the internal temperature of the electrical control box is less than or equal to a temperature threshold, the method further includes: Acquire historical data, which includes historical operating parameters and historical environmental data; Based on the historical data, determine the mapping relationship between the preset operating conditions and the temperature threshold and preset conversion rate; Based on the mapping relationship, the current temperature threshold and preset rate of change corresponding to the internal temperature of the electrical control box are determined.

8. A temperature control device for an internal electrical control box, characterized in that, The device includes: The acquisition module is used to acquire the internal temperature of the electrical control box; The determination module is used to determine the opening adjustment scheme of the proportional regulating valve according to the internal temperature of the electrical control box when the internal temperature of the electrical control box is less than or equal to a temperature threshold. The proportional regulating valve is located on the connecting pipeline between the output end of the oil separator and the heat exchanger inside the electrical control box. The control module is used to adjust the opening of the proportional control valve according to the opening adjustment scheme, wherein the oil separator provides high-temperature lubricating oil to the heat exchanger through the proportional control valve to increase the internal temperature of the electrical control box.

9. A refrigeration device, characterized in that, The refrigeration equipment includes a refrigeration unit and a temperature control device inside the electrical control box as described in claim 8. The refrigeration unit includes an oil separator and an electrical control box. A heat exchanger is provided inside the electrical control box. The input end of the heat exchanger is connected to the output end of the oil separator through a proportional regulating valve. The internal temperature control device of the electrical control box is used to determine the opening adjustment scheme of the proportional regulating valve according to the internal temperature of the electrical control box when the internal temperature of the electrical control box is less than or equal to a temperature threshold. The proportional regulating valve is located on the connecting pipeline between the output end of the oil separator and the heat exchanger inside the electrical control box. The opening of the proportional regulating valve is adjusted according to the opening adjustment scheme. The oil separator provides high-temperature lubricating oil to the heat exchanger through the proportional regulating valve to increase the internal temperature of the electrical control box.

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

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