Electric control box, control method thereof and air conditioning unit

Abstract

The application discloses an electric control box, a control method thereof and an air conditioning unit, wherein the electric control box comprises an electric control box box body, electric elements in the electric control box box body, a wind pressure sensor in the electric control box box body for detecting the wind pressure in the electric control box, and a controller connected with the wind pressure sensor for determining the sealing effect of the electric control box box body according to the wind pressure in the electric control box and performing early warning treatment when the sealing effect is sealing failure. The application solves the problem of self-protection failure of the electric control box in the prior art during use, and improves the reliability and stability of the electric control box and the control thereof.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to an electrical control box and its control method, and an air conditioning unit. Background Technology

[0002] For large electrical control boxes such as screw compressors (hereinafter referred to as units), a separate electrical control box is required for unit control. Screw compressors are often used in spaces such as rooftops and ship cabins, requiring stable operation of the electrical control box to ensure safety. Normally, electrical control boxes are equipped with IP-level protection when they leave the factory to protect them. However, with the long-term effects of the environment where the electrical control box is located, especially outdoor environments, such as wind and sun exposure, the protection capability of the electrical control box will gradually decrease. When after-sales personnel perform maintenance, they often find foreign objects, water stains, mold, etc. inside the electrical control box. These phenomena can cause minor damage to the sensitivity of electrical components, or even serious accidents such as short circuits in the electrical control box.

[0003] Currently, no effective solution has been proposed to address the issue of self-protection failure of electrical control boxes during use in related technologies. Summary of the Invention

[0004] This invention provides an electrical control box and its control method, as well as an air conditioning unit, to at least solve the problem of self-protection failure of electrical control boxes during use in the prior art.

[0005] To address the aforementioned technical problems, according to one aspect of the present invention, an electrical control box is provided, comprising: an electrical control box housing, electrical components located within the electrical control box housing; a wind pressure sensor located within the electrical control box housing for detecting wind pressure within the electrical control box; and a controller connected to the wind pressure sensor for determining the sealing effect of the electrical control box housing based on the wind pressure within the electrical control box, and providing an early warning when the sealing effect indicates sealing failure.

[0006] Furthermore, the number of wind pressure sensors is at least one, and when there are multiple wind pressure sensors, the wind pressure sensors are evenly distributed on the inner wall of the electrical control box.

[0007] Furthermore, the electrical control box is the electrical control box of an air conditioning unit, and the electrical control box further includes: a low-temperature air duct, one end of which is connected to the suction side of the compressor of the air conditioning unit, and the other end of which is connected to the electrical control box, for introducing low-temperature intake air from the suction side of the compressor into the electrical control box to cool the electrical control box; and a low-temperature fan, which is installed in the low-temperature air duct to accelerate the gas flow in the low-temperature air duct.

[0008] Furthermore, it also includes: a high-temperature air duct, one end of which is connected to the oil separator of the air conditioning unit, and the other end of which is connected to the electrical control box, for introducing high-temperature air from the oil separator into the electrical control box to heat the electrical control box; wherein, an electric heating belt is also provided on the outside of the oil separator for heating the oil separator; a high-temperature fan is provided in the high-temperature air duct for accelerating the gas flow in the high-temperature air duct.

[0009] Furthermore, it also includes: a low-temperature air inlet filter, disposed within the low-temperature air duct, for filtering the low-temperature air inlet within the low-temperature air duct; and a high-temperature air inlet filter, disposed within the high-temperature air duct, for filtering the high-temperature air inlet within the high-temperature air duct.

[0010] According to another aspect of the present invention, an electrical control box control method is provided, applied to the electrical control box as described above. The method includes: detecting the air pressure inside the electrical control box; determining the sealing effect of the electrical control box body based on the air pressure inside the electrical control box; and performing an early warning process when the sealing effect of the electrical control box body is a sealing failure, so as to remind the user to maintain the electrical control box body.

[0011] Furthermore, it also includes: determining the degree of clogging of the air intake filter based on the air pressure inside the electrical control box; wherein the air intake filter includes a low-temperature air intake filter and a high-temperature air intake filter; the degree of clogging includes at least slight clogging and severe clogging; and providing an early warning when the degree of clogging of the air intake filter is severe clogging, so as to remind the user to maintain the air intake filter.

[0012] Furthermore, before detecting the air pressure inside the electrical control box, the method further includes: controlling the low-temperature fan or the high-temperature fan to start during the initial operation phase of the electrical control box; acquiring the air pressure inside the electrical control box, and determining a preset air pressure based on the air pressure inside the electrical control box, wherein, when there are multiple air pressures inside the electrical control box, the preset air pressure is the average value of the air pressures inside the multiple electrical control boxes; and triggering the detection of the air pressure inside the electrical control box after the operating time of the electrical control box reaches a preset time.

[0013] Further, determining the sealing effect of the electrical control box body based on the air pressure inside the electrical control box, or determining the degree of blockage of the air inlet filter based on the air pressure inside the electrical control box, includes: detecting whether the air pressure meets preset conditions; wherein, the preset conditions include at least one of the following: any air pressure is less than or equal to the product of the preset air pressure and the preset ratio, the air pressure is in a decreasing trend and the average value of the air pressure is less than or equal to the product of the preset air pressure and the preset ratio; if so, the sealing effect of the electrical control box body is determined to be a seal failure or the degree of blockage of the air inlet filter is severe blockage; otherwise, the sealing effect of the electrical control box body is determined to be a seal that has not failed or the degree of blockage of the air inlet filter is mild blockage.

[0014] Furthermore, it also includes: detecting temperature parameters inside the electrical control box; determining the temperature environment inside the electrical control box based on the temperature parameters; wherein the temperature environment includes at least: a high-temperature environment and a low-temperature environment; controlling the low-temperature fan to turn on when the temperature environment is the high-temperature environment; controlling the high-temperature fan to turn on when the temperature environment is the low-temperature environment, or controlling the high-temperature fan and the electric heating belt to turn on.

[0015] According to another aspect of the present invention, an air conditioning unit is provided, including the electrical control box as described above.

[0016] According to another aspect of the present invention, a storage medium containing computer-executable instructions is provided, which, when executed by a computer processor, are used to perform the electrical control box control method as described above.

[0017] This invention provides a protection scheme for an electrical control box, aiming to provide early warning of impaired protection capabilities. Specifically, a wind pressure sensor is installed inside the control box to detect the internal wind pressure. The controller determines the sealing effectiveness of the control box based on the wind pressure and issues an early warning when the seal fails. By adding a failure warning for the control box's protection capabilities, the system can detect the protection status in advance, allowing for timely maintenance when protection fails. This prevents malfunctions in the electronic components within the control box caused by protection failure, thereby improving the reliability and stability of the control box and its control mechanisms. Attached Figure Description

[0018] Figure 1 This is an optional flowchart of the electrical control box control method according to an embodiment of the present invention;

[0019] Figure 2 This is another optional flowchart of the electrical control box control method according to an embodiment of the present invention;

[0020] Figure 3 This is an optional structural block diagram of an air conditioning control device according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Electrical control box housing; 2. Wind pressure sensor; 2-1. Wind pressure sensor 1; 2-2. Wind pressure sensor 2; 2-3. Wind pressure sensor 3; 2-4. Wind pressure sensor 4; 3. Low-temperature air duct; 4. High-temperature air duct; 5. Low-temperature fan; 6. High-temperature fan; 7. Low-temperature air inlet filter; 8. High-temperature air inlet filter; 9. Compressor; 10. Evaporator; 11. Throttling device; 12. Condenser; 13. Oil separator; 14. Electric heating belt; 15. Low-temperature suction side. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0025] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0026] It should be understood that although the terms first, second, third, etc., may be used to describe controllers in embodiments of the present invention, these controllers should not be limited to these terms. These terms are only used to distinguish controllers connected to different devices. For example, without departing from the scope of embodiments of the present invention, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller.

[0027] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0028] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0029] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Example 1

[0030] In a preferred embodiment 1 of the present invention, an electrical control box is provided. Specifically... Figure 1 This diagram illustrates one possible structural design of the electrical control box, such as... Figure 1 As shown, the electrical control box includes:

[0031] Electrical control box 1; electrical components located inside electrical control box 1;

[0032] Wind pressure sensor 2, located inside the electrical control box 1, is used to detect the wind pressure inside the electrical control box;

[0033] The controller, connected to the wind pressure sensor 2, is used to determine the sealing effect of the electrical control box 1 based on the wind pressure inside the electrical control box, and to provide an early warning when the sealing effect is considered to be a sealing failure.

[0034] In the above embodiments, a protection scheme for an electrical control box is provided, aiming to provide early warning of impaired protection capabilities. Specifically, a wind pressure sensor is installed inside the control box to detect the internal wind pressure. The controller determines the sealing effectiveness of the control box based on the wind pressure and issues an early warning when the seal fails. By adding a failure warning for the control box's protection capabilities, the condition of the control box's protection can be detected in advance, allowing for timely maintenance when protection fails. This prevents malfunctions of electronic components within the control box due to protection failure, thereby improving the reliability and stability of the control box and its control system.

[0035] In the electrical control box of this invention, the number of wind pressure sensors 2 is at least one. Figure 1 The diagram shows a case where there are multiple wind pressure sensors 2, for example, four. When there are multiple wind pressure sensors 2, they are evenly distributed on the inner wall of the electrical control box 1. For example... Figure 1 As shown, the wind pressure sensors 2 are distributed on the four inner walls of the electrical control box, which can detect the wind pressure in various directions inside the electrical control box, making the wind pressure data more accurate. By adding four wind pressure sensors 2 to the unit's electrical control box, the wind pressure at various points inside the electrical control box can be monitored. The airtightness of the electrical control box can be judged in real time by confirming the wind pressure value. When there is an increase in leakage, maintenance and protection can be carried out immediately.

[0036] In this invention, the electrical control box is the electrical control box of an air conditioning unit, that is, it is applied to the air conditioning unit and used to control the air conditioning unit. The air conditioning unit is as follows: Figure 1As shown, the unit includes a compressor 9, an evaporator 10, a throttling device 11, a condenser 12, and an oil separator 13. Based on the heat exchange during the refrigerant circulation process of the air conditioning unit, the electrical control box also includes: a low-temperature air duct 3, one end of which is connected to the suction side of the compressor 9 of the air conditioning unit, and the other end is connected to the electrical control box, used to introduce low-temperature intake air from the suction side of the compressor 9 into the electrical control box to cool it down; and a low-temperature fan 5, installed inside the low-temperature air duct 3, used to accelerate the gas flow within the low-temperature air duct 3. Because the fan operates, the inside of the electrical control box is always under positive pressure, which prevents rainwater and dust from entering and ensures the cleanliness of the inside of the electrical control box. During the operation of the air conditioning unit, the cooling capacity is utilized to keep the components inside the electrical control box operating at a favorable ambient temperature, achieving optimal control performance. Specifically, when the air conditioning unit is running, the low-temperature refrigerant flowing from the evaporator flows into the compressor 9 through the suction pipe, where it is compressed into a high-temperature, high-pressure refrigerant gas. Therefore, the temperature of the suction side of the compressor 9 and the suction pipe connected to the compressor 9 is very low. This invention utilizes this low-temperature refrigerant through an air duct and introduces it into the electrical control box. Due to IP-level protection, the electrical components in the control box generate more heat in the enclosed space. Excessively high ambient temperatures can lead to decreased sensitivity or even malfunctions. Therefore, the introduction of low-temperature refrigerant lowers the ambient temperature of the electrical components, helping to stabilize the unit's operation.

[0037] like Figure 1 As shown, the electrical control box also includes: a high-temperature air duct 4, one end of which is connected to the oil separator 13 of the air conditioning unit, and the other end of which is connected to the electrical control box. This duct is used to introduce high-temperature air from the oil separator 13 into the electrical control box to heat it. An electric heating belt 14 is also installed on the outside of the oil separator 13 to heat it. A high-temperature fan 6 is located inside the high-temperature air duct 4 to accelerate gas flow within it. When the unit stops, the components no longer generate heat, the low-temperature fan 5 stops, and the high-temperature fan 6 starts. According to the unit control, the oil heater starts immediately after the unit stops, and the heating belt continues to generate heat. Because when the ambient temperature is low, a large amount of refrigerant dissolves into the refrigeration oil, reducing the oil viscosity, the oil temperature needs to be increased to evaporate the refrigerant and ensure the lubricating effect of the oil. The heating element heats the oil in the compressor 9 within the oil separator 13 on one side and also heats the surrounding air on the other (the temperature rise of the surrounding air can be controlled by selecting the power of the heating element). Introducing this higher-temperature air into the electrical control box increases positive pressure, preventing rainwater and dust from entering and ensuring the cleanliness of the box's interior. Furthermore, if rainwater seeps into gaps, the high-temperature air accelerates evaporation. In cold regions, it also prevents the electrical control box from freezing, avoiding the possibility of the door being unable to open, and fully utilizing the heat from the electric heating element 14. This structure allows for regular dehydration of the electrical control box and even provides rain protection in case of rain.

[0038] like Figure 1 As shown, the electrical control box also includes: a low-temperature air inlet filter 7, installed inside the low-temperature air duct 3, used to filter the low-temperature air entering the low-temperature air duct 3; and a high-temperature air inlet filter 8, installed inside the high-temperature air duct 4, used to filter the high-temperature air entering the high-temperature air duct 4. Both fan inlet filters are unidirectional air inlet filters used to filter the air entering the electrical control box. The electrical control box is not absolutely sealed, as it has inlet and outlet wiring, and door gaps, etc. As the unit's installation and operation time increases, the wiring will age, the inlet holes will enlarge, and the door seals will also age, leading to weakened sealing and leakage of rainwater, dust, etc., into the electrical control box. During the initial leakage period, the positive pressure inside the electrical control box can prevent rain and sand, ensuring the cleanliness of the unit's interior, and the air inlet filters further prevent impurities from entering the electrical control box, maintaining its cleanliness.

[0039] In the above implementation, four wind pressure sensors are first added to the unit's electrical control box to monitor the wind pressure at various points within the box. The real-time assessment of the control box's airtightness is based on the wind pressure values. If leakage increases, immediate repair and protection can be initiated. During the initial leakage period, the positive pressure within the control box provides protection against rain and sand, ensuring the cleanliness of the unit's interior. During air conditioning unit operation, the cooling capacity from the low-pressure side is diverted through the ductwork, continuously cooling the components in the control box to ensure their reliable operation. After the unit stops, the continuous heating from the electric heating element diverts the air through the ductwork, providing continuous positive pressure and high temperature dehydration or de-icing to the control box, fully utilizing the heat from the electric heating element. Example 2

[0040] In a preferred embodiment 2 of the present invention, an electrical control box control method is provided, which is applied to the electrical control box in embodiment 1 above. Specifically, Figure 2 An optional flowchart of the method is shown, such as Figure 2 As shown, the method includes the following steps S202-S206:

[0041] S202: Detect the air pressure inside the electrical control box;

[0042] S204: Determine the sealing effect of the electrical control box based on the air pressure inside the box;

[0043] S206: A warning will be issued when the sealing of the electrical control box fails, so as to remind the user to maintain the electrical control box.

[0044] In the above embodiments, a protection scheme for an electrical control box is provided, aiming to provide early warning of impaired protection capabilities. Specifically, a wind pressure sensor is installed inside the control box to detect the internal wind pressure. The controller determines the sealing effectiveness of the control box based on the wind pressure and issues an early warning when the seal fails. By adding a failure warning for the control box's protection capabilities, the condition of the control box's protection can be detected in advance, allowing for timely maintenance when protection fails. This prevents malfunctions of electronic components within the control box due to protection failure, thereby improving the reliability and stability of the control box and its control system.

[0045] The aforementioned air pressure can not only detect the sealing effect of the electrical control box, but also the degree of clogging of the inlet air filter. Therefore, the above control method also includes: determining the degree of clogging of the inlet air filter based on the air pressure inside the electrical control box; wherein, the inlet air filter includes low-temperature inlet air filter and high-temperature inlet air filter; the degree of clogging includes at least slight clogging and severe clogging; and issuing an early warning when the inlet air filter is severely clogged to remind the user to maintain the inlet air filter. A clogged filter not only fails to filter effectively, but also leads to poor airflow in the duct; therefore, timely filter maintenance is essential to ensure optimal heat exchange performance of the electrical control box.

[0046] Before detecting the air pressure inside the electrical control box, the process includes: during the initial operation phase of the electrical control box, controlling the low-temperature fan or high-temperature fan to start; acquiring the air pressure inside the electrical control box, and determining a preset air pressure based on the air pressure inside the electrical control box. If there are multiple air pressures inside the electrical control box, the preset air pressure is the average of the air pressures inside all the electrical control boxes. After the electrical control box has been running for a preset time, triggering the detection of the air pressure inside the electrical control box. The air pressure monitoring process first involves starting the low-temperature fan or high-temperature fan normally and ensuring stable operation after the unit is assembled, and then performing pressure detection, such as... Figure 1 As shown, the four pressures are recorded as P1, P2, P3, and P4 respectively. The initial pressure, i.e. the preset air pressure, is determined based on the detected pressure. The preset air pressure is the air pressure at which the electrical control box protection is not ineffective.

[0047] After determining the preset air pressure, the sealing effect of the electrical control box is determined based on the air pressure inside the box, or the degree of clogging of the inlet filter is determined based on the air pressure inside the box. This includes checking whether the air pressure meets preset conditions; wherein the preset conditions include at least one of the following: any air pressure is less than or equal to the product of the preset air pressure and the preset ratio, or the air pressure is decreasing and the average air pressure is less than or equal to the product of the preset air pressure and the preset ratio. If so, the sealing effect of the electrical control box is determined to be a seal failure or the degree of clogging of the inlet filter is severe clogging; otherwise, the sealing effect of the electrical control box is determined to be a seal that has not failed or the degree of clogging of the inlet filter is slight clogging. As the unit is installed and operated for a longer period of time, the wiring will age, the inlet hole will enlarge, and the door seal will also age, resulting in weakened sealing and a decrease in the pressure value detected by the pressure sensor. When a decrease in pressure is detected at four points, and any one of these pressures is ≤ a%×P (where a is a settable value, greater than 1 and less than 100, and P is the preset pressure), or the average pressure is ≤ a%×P, it is determined that the seal has failed or the filter is severely clogged. The unit sends a warning to the monitoring system, and the operator conducts an on-site inspection. Furthermore, when the pressure in the electrical control box is between (a%~100%)×P, the inside of the control box remains under positive pressure due to the operation of the fan, preventing rainwater and dust from entering and ensuring the cleanliness of the control box's interior.

[0048] In addition to monitoring for wind pressure leakage, the electrical control box control scheme of this invention also provides multiple protections for the electrical control box, including low-temperature air intake to ensure operation and high-temperature air intake to remove water during shutdown.

[0049] Specifically, the temperature parameters inside the electrical control box are detected; the temperature environment inside the electrical control box is determined based on the temperature parameters; wherein the temperature environment includes at least: a high temperature environment and a low temperature environment; when the temperature environment is a high temperature environment, the low temperature fan is turned on; when the temperature environment is a low temperature environment, the high temperature fan is turned on, or the high temperature fan and the electric heating belt are turned on.

[0050] When the air conditioning unit is running, the low-temperature refrigerant flowing from the evaporator flows into the compressor through the suction pipe, where it is compressed into a high-temperature, high-pressure refrigerant gas. Therefore, the temperature of the compressor's suction side and the suction pipe connected to the compressor is very low. This invention utilizes this low-temperature refrigerant through an air duct and introduces it into the electrical control box. Due to IP-level protection, the electrical components in the control box generate more heat in the enclosed space. Excessively high ambient temperatures can lead to decreased sensitivity or even malfunctions. Therefore, the introduction of low-temperature refrigerant lowers the ambient temperature of the electrical components, helping to stabilize the unit's operation.

[0051] When the unit stops, the components cease heating, the low-temperature fan stops, and the high-temperature fan starts. According to the unit control, the oil heater starts immediately after the unit stops, and the heating element continues to generate heat. Because refrigerant dissolves significantly into the refrigeration oil at low ambient temperatures, reducing its viscosity, the oil temperature needs to be raised to evaporate the refrigerant and ensure proper lubrication. The heating element heats both the compressor oil in the oil separator and the surrounding air (the temperature rise can be controlled by selecting the heating element's power). Introducing this higher-temperature air into the control box increases positive pressure, preventing rainwater and dust from entering and ensuring the box's cleanliness. Furthermore, if rainwater seeps into gaps, the high-temperature air accelerates evaporation. In cold regions, it also prevents the control box from freezing, ensuring the door remains open and fully utilizing the heat from the heating element. Example 3

[0052] Based on the electrical control box provided in Embodiment 1 above, an air conditioning unit is also provided in a preferred embodiment 3 of the present invention, including the above-mentioned electrical control box, for controlling the air conditioning unit.

[0053] In the above embodiments, a protection scheme for an electrical control box is provided, aiming to provide early warning of impaired protection capabilities. Specifically, a wind pressure sensor is installed inside the control box to detect the internal wind pressure. The controller determines the sealing effectiveness of the control box based on the wind pressure and issues an early warning when the seal fails. By adding a failure warning for the control box's protection capabilities, the condition of the control box's protection can be detected in advance, allowing for timely maintenance when protection fails. This prevents malfunctions of electronic components within the control box due to protection failure, thereby improving the reliability and stability of the control box and its control system. Example 4

[0054] Based on the electrical control box control method provided in Embodiment 2 above, in the preferred embodiment 4 of the present invention, a storage medium containing computer-executable instructions is also provided, wherein the computer-executable instructions are used to execute the electrical control box control method as described above when executed by a computer processor.

[0055] In the above embodiments, a protection scheme for an electrical control box is provided, aiming to provide early warning of impaired protection capabilities. Specifically, a wind pressure sensor is installed inside the control box to detect the internal wind pressure. The controller determines the sealing effectiveness of the control box based on the wind pressure and issues an early warning when the seal fails. By adding a failure warning for the control box's protection capabilities, the condition of the control box's protection can be detected in advance, allowing for timely maintenance when protection fails. This prevents malfunctions of electronic components within the control box due to protection failure, thereby improving the reliability and stability of the control box and its control system.

[0056] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0057] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0058] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0059] 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 units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0060] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0061] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0062] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not invented by the invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0063] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An electrical control box, characterized in that, The electrical control box is the electrical control box for an air conditioning unit, and the electrical control box includes: Electrical control box housing, and electrical components located inside the electrical control box housing; A wind pressure sensor, located inside the electrical control box, is used to detect the wind pressure inside the electrical control box; The controller is connected to the wind pressure sensor and is used to determine the sealing effect of the electrical control box based on the wind pressure inside the electrical control box, and to provide an early warning when the sealing effect is deemed to be a sealing failure. A high-temperature air duct is connected at one end to the oil separator of the air conditioning unit and at the other end to the electrical control box. It is used to introduce high-temperature air from the oil separator into the electrical control box to heat up the electrical control box. An electric heating belt is also provided on the outside of the oil separator to heat the oil separator. A high-temperature fan is installed inside the high-temperature air duct to accelerate the gas flow within the high-temperature air duct.

2. The electrical control box according to claim 1, characterized in that, The number of wind pressure sensors is at least one. When there are multiple wind pressure sensors, the wind pressure sensors are evenly distributed on the inner wall of the electrical control box.

3. The electrical control box according to claim 1, characterized in that, The electrical control box also includes: The low-temperature air duct is connected at one end to the suction side of the compressor of the air conditioning unit and at the other end to the electrical control box. It is used to introduce the low-temperature air intake from the suction side of the compressor into the electrical control box to cool the electrical control box. A low-temperature fan is installed inside the low-temperature air duct to accelerate the gas flow within the low-temperature air duct.

4. The electrical control box according to claim 3, characterized in that, Also includes: A low-temperature air intake filter is installed inside the low-temperature air duct to filter the low-temperature air intake within the low-temperature air duct. A high-temperature air intake filter is installed inside the high-temperature air duct to filter the high-temperature air intake within the high-temperature air duct.

5. A control method for an electrical control box, applied to an electrical control box as described in any one of claims 1 to 4, characterized in that, The method includes: Detect the air pressure inside the electrical control box; The sealing effect of the electrical control box is determined based on the air pressure inside the box. An early warning system is activated when the sealing of the electrical control box fails, reminding the user to perform maintenance on the electrical control box.

6. The method according to claim 5, characterized in that, Also includes: The degree of clogging of the air intake filter is determined based on the air pressure inside the electrical control box; wherein the air intake filter includes a low-temperature air intake filter and a high-temperature air intake filter; the degree of clogging includes at least slight clogging and severe clogging; When the air intake filter is severely clogged, an early warning is issued to remind the user to maintain the air intake filter.

7. The method according to claim 6, characterized in that, Before detecting the air pressure inside the electrical control box, the following steps are also included: During the initial operation phase of the electrical control box, the low-temperature fan or the high-temperature fan is turned on. The air pressure inside the electrical control box is obtained, and a preset air pressure is determined based on the air pressure inside the electrical control box. When there are multiple air pressures inside the electrical control box, the preset air pressure is the average value of the air pressures inside the multiple electrical control boxes. After the electrical control box has been running for a preset time, the detection of the air pressure inside the electrical control box is triggered.

8. The method according to claim 7, characterized in that, The sealing effect of the electrical control box is determined based on the air pressure inside the box, or the degree of clogging of the air inlet filter is determined based on the air pressure inside the box, including: Detect whether the wind pressure meets a preset condition; wherein the preset condition includes at least one of the following: any wind pressure is less than or equal to the product of the preset wind pressure and the preset ratio, the wind pressure is in a decreasing trend and the average value of the wind pressure is less than or equal to the product of the preset wind pressure and the preset ratio; If so, determine that the sealing effect of the electrical control box is a sealing failure or that the clogging degree of the air inlet filter is severe clogging; Otherwise, the sealing effect of the electrical control box is determined to be that the seal has not failed or the degree of blockage of the air inlet filter is slight blockage.

9. The method according to claim 5, characterized in that, Also includes: Detect the temperature parameters inside the electrical control box; The temperature environment inside the electrical control box is determined based on the temperature parameters; wherein, the temperature environment includes at least: a high-temperature environment and a low-temperature environment; When the temperature environment is the high temperature environment, the low temperature fan is turned on. When the temperature environment is the low temperature environment, control the high temperature fan to turn on, or control the high temperature fan and the electric heating belt to turn on.

10. An air conditioning unit, characterized in that, Includes the electrical control box as described in any one of claims 1 to 4.

11. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the electrical control box control method as described in any one of claims 5 to 9.

Images