Monitoring system for compressor and monitoring method thereof

Abstract

The invention provides a monitoring system for a compressor and a monitoring method thereof, and the monitoring system comprises a compressor main body which is used for compressing a refrigerant; the oil-water separator is communicated with the low-pressure input end of the compressor main body and is used for separating oil and water in compressed gas; the pressurizer is communicated with the high-pressure output end of the compressor main body and is used for pressurizing the compressed gas output by the compressor main body; the first monitoring unit is communicated with the output end of the oil-water separator and is used for monitoring low-pressure data of the compressor main body; the second monitoring unit communicates with the output end of the supercharger and is used for monitoring high-pressure data of the compressor main body; the main control unit is used for adjusting the refrigerant amount of the compressor main body according to the monitored low-pressure data and high-pressure data; high-pressure data and low-pressure data of the compressor can be monitored at the same time, and the refrigerant amount is intelligently adjusted according to the actual operation condition of the compressor.

Description

Technical Field

[0001] This application belongs to the technical field of refrigeration, and particularly relates to a monitoring system for a compressor and a monitoring method thereof. Background Art

[0002] In the field of battery manufacturing, the temperature control box cooling system needs to maintain precise temperature control under complex working conditions. The stability of the core compressor equipment will directly affect the reliability of test data. When abnormal conditions occur during the operation of the compressor, it will affect the accuracy of test data of the battery in the temperature control box.

[0003] The refrigerant amount will directly affect the working state of the compressor. When the refrigerant amount is insufficient, it will lead to insufficient liquid supply to the evaporator, resulting in a decrease in refrigeration efficiency. When the refrigerant amount is excessive, it will increase the compressor load and even cause potential safety hazards. Therefore, the reasonable adjustment of the refrigerant amount is a key link to ensure the stable operation of the system and the temperature control accuracy.

[0004] In related technologies, a single-control simple pressure switch is usually used to monitor the high and low refrigerant amounts in the compressor. The simple pressure switch is mainly used to monitor and control the pressure of the compressor. However, this simple pressure switch can only perform simple pressure monitoring, and cannot comprehensively and accurately obtain the high-pressure data and low-pressure data of the compressor, cannot timely detect abnormal situations during the operation of the compressor, nor can it intelligently adjust the refrigerant amount according to the actual operation situation of the compressor, making it difficult to maximize the refrigeration efficiency and reduce energy consumption. Summary of the Invention

[0005] This application provides a monitoring system for a compressor and a monitoring method thereof, which can simultaneously monitor the high-pressure data and low-pressure data of the compressor and intelligently adjust the refrigerant amount according to the actual operation situation of the compressor.

[0006] To solve the above technical problems, this application provides a monitoring system for a compressor, including:

[0007] A compressor main body for compressing the refrigerant;

[0008] An oil-water separator connected to the low-pressure input end of the compressor main body for separating oil and moisture in the compressed gas;

[0009] A supercharger connected to the high-pressure output end of the compressor main body for boosting the compressed gas output by the compressor main body;

[0010] A first monitoring unit connected to the output end of the oil-water separator for monitoring the low-pressure data of the compressor main body;

[0011] The second monitoring unit is connected to the output end of the supercharger and is used to monitor the high-pressure data of the compressor body;

[0012] The main control unit is connected to the first monitoring unit and the second monitoring unit, and is used to adjust the refrigerant amount of the compressor body according to the monitored low-pressure data and high-pressure data.

[0013] As a further improvement of the present application, a filter is also connected between the oil-water separator and the low-pressure input end of the compressor body. The filter is used to filter the oil and moisture in the compressed gas and transmit the filtered low-pressure gas into the compressor body.

[0014] As a further improvement of the present application, a regulating valve is also arranged between the filter and the compressor body. When the high-pressure data detected by the second monitoring unit is higher than the preset high-pressure threshold, the main control unit triggers the regulating valve to open to discharge the refrigerant.

[0015] As a further improvement of the present application, the first monitoring unit includes a first pressure sensor connected to the output end of the oil-water separator. The first pressure sensor is connected to the main control unit and is used to transmit the collected low-pressure data to the main control unit.

[0016] As a further improvement of the present application, the first monitoring unit further includes a first pressure display meter arranged at the output end of the oil-water separator. The first pressure display meter is used to display the low-pressure data at the output end of the oil-water separator.

[0017] As a further improvement of the present application, the second monitoring unit includes a second pressure sensor connected to the output end of the supercharger. The second pressure sensor is connected to the main control unit and is used to transmit the collected high-pressure data to the main control unit.

[0018] As a further improvement of the present application, the second monitoring unit includes a second pressure display meter arranged at the output end of the supercharger. The second pressure display meter is used to display the high-pressure data at the output end of the supercharger.

[0019] As a further improvement of the present application, the main control unit includes a main controller, and the main controller is connected to the first monitoring unit and the second monitoring unit in a wired or wireless manner;

[0020] The main controller is used to judge whether the low-pressure data detected by the first monitoring unit is lower than the preset low-pressure threshold, and judge whether the high-pressure data detected by the second monitoring unit is higher than the preset high-pressure threshold.

[0021] Based on the above monitoring system for a compressor, the present application also provides a monitoring method for a compressor, and the monitoring method includes the following steps:

[0022] Collect the low-pressure data detected by the first monitoring unit and the high-pressure data detected by the second monitoring unit;

[0023] Judge whether the low-pressure data is lower than a preset low-pressure threshold and whether the high-pressure data detected by the second monitoring unit is higher than a preset high-pressure threshold;

[0024] Adjust the refrigerant amount according to the judgment result.

[0025] As a further improvement of the present application, the adjusting the refrigerant amount according to the judgment result includes:

[0026] When the low-pressure data is lower than the preset low-pressure threshold, add refrigerant to the compressor body;

[0027] When the high-pressure data is higher than the preset high-pressure threshold, trigger the regulating valve to open to discharge the refrigerant.

[0028] The monitoring system for a compressor and its monitoring method provided by the present application connect the supercharger to the high-pressure output end of the compressor body to boost the compressed gas output by the compressor body, improving the pressure and temperature of the refrigerant, enabling it to efficiently release heat and liquefy in the condenser, enhancing the refrigeration capacity of the refrigeration system, and meeting the demand for refrigeration capacity under different working conditions; connect the oil-water separator to the low-pressure input end of the compressor body to separate the oil and water in the low-pressure compressed gas, preventing them from entering the compressor body, extending the service life of the compressor body, and ensuring the stable operation of the refrigeration system; at the same time, set the first monitoring unit and the second monitoring unit to monitor the low-pressure data and high-pressure data of the compressor body respectively, and the main control unit intelligently adjusts the refrigerant amount according to the actual operating conditions of the compressor to ensure good refrigeration effects under different working environments and load conditions. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of the monitoring system for a compressor provided by the embodiment of the present application;

[0031] Figure 2It is a functional block diagram of the monitoring system for a compressor provided by an embodiment of the present application;

[0032] Figure 3 It is a flowchart of the monitoring method for a compressor provided by an embodiment of the present application;

[0033] Figure 4 It is a flowchart for adjusting the refrigerant amount in the monitoring method for a compressor provided by an embodiment of the present application;

[0034] Explanation of reference numerals:

[0035] 10 - Compressor main body; 11 - Low - pressure input end; 12 - High - pressure output end;

[0036] 20 - Oil - water separator; 30 - Supercharger; 40 - Filter;

[0037] 50 - First pressure sensor; 51 - First pressure display meter;

[0038] 60 - Second pressure sensor; 61 - Second pressure display meter. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non - exclusive inclusion.

[0041] In order to make the narrative of the present disclosure more detailed and complete, the following presents an illustrative description of the implementation manners and specific embodiments of the present application; but this is not the only form for implementing or applying the specific embodiments of the present application. The implementation manners cover the features of multiple specific embodiments and the method steps and their sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0042] In the field of battery manufacturing, the incubator cooling system needs to maintain precise temperature control under complex working conditions. The stability of its core compressor equipment will directly affect the reliability of test data. When abnormal conditions occur during the operation of the compressor, it will affect the accuracy of the test data of the battery in the incubator.

[0043] The refrigerant charge will directly affect the working state of the compressor. When the refrigerant charge is insufficient, it will lead to insufficient liquid supply to the evaporator, resulting in a decrease in refrigeration efficiency. When the refrigerant charge is excessive, it will increase the compressor load and even pose a safety hazard. Therefore, the reasonable adjustment of the refrigerant charge is a key link to ensure the stable operation of the system and the accuracy of temperature control.

[0044] In the related art, a single-control simple pressure switch is usually used to monitor the high and low refrigerant charges in the compressor. The simple pressure switch is mainly used to monitor and control the pressure of the compressor. However, this simple pressure switch can only perform simple pressure monitoring, and cannot comprehensively and accurately obtain the high-pressure data and low-pressure data of the compressor, cannot timely detect abnormal conditions during the operation of the compressor, and cannot intelligently adjust the refrigerant charge according to the actual operation conditions of the compressor, making it difficult to maximize the refrigeration efficiency and reduce energy consumption.

[0045] Please refer to Figures 1 - 4 , the embodiment of the present application provides a monitoring system and a monitoring method for a compressor, which can simultaneously monitor the high-pressure data and low-pressure data of the compressor and intelligently adjust the refrigerant charge according to the actual operation conditions of the compressor.

[0046] Please refer to Figure 1 , which is a schematic structural diagram of the monitoring system for the compressor provided by the embodiment of the present application. The monitoring system includes a compressor main body 10, an oil-water separator 20, a supercharger 30, a first monitoring unit, a second monitoring unit, and a main control unit.

[0047] In the embodiment of the present application, the compressor main body 10 serves as the power source of the refrigeration cycle, can compress the refrigerant, compress the low-temperature and low-pressure refrigerant and gas into high-temperature and high-pressure compressed gas, and provide power for the refrigeration cycle.

[0048] Furthermore, in this application, the oil-water separator 20 is connected to the low-pressure input end 11 of the compressor main body 10, and the supercharger 30 is connected to the high-pressure output end 12 of the compressor main body 10. The supercharger 30 boosts the compressed gas output by the compressor main body 10, and by increasing the pressure and temperature of the refrigerant, it can efficiently release heat and liquefy in the condenser (not shown in the figure). The liquid refrigerant evaporates and absorbs heat in the evaporator to form low-pressure compressed gas and then returns to the oil-water separator 20. The oil-water separator 20 separates the oil and moisture in the low-pressure compressed gas, preventing the oil and moisture from entering the compressor main body 10, avoiding damage to the compressor main body 10, thereby extending the service life of the compressor main body 10, ensuring the normal operation of the refrigeration system, and meeting the refrigeration requirements under different working conditions.

[0049] As an alternative embodiment, in this application, the first monitoring unit is arranged at the output end of the oil-water separator 20 to monitor the low-pressure data of the compressor main body 10. When the refrigerant is insufficient, the evaporation amount in the evaporator (not shown in the figure) will decrease. The decrease in the evaporation amount will cause the pressure in the evaporator to drop. Since the low-pressure input end 11 of the compressor main body 10 is connected to the evaporator through the oil-water separator 20, the low-pressure data collected by the first monitoring unit arranged at the output end of the oil-water separator 20 will thus decrease, and then it can be inferred that the refrigerant may be insufficient.

[0050] Preferably, in this application, the second monitoring unit is arranged at the output end of the supercharger 30 to monitor the high-pressure data of the compressor main body 10. Since during actual operation, the supercharger 30 needs to first boost the compressed gas output by the compressor main body 10, the high-pressure data at the output end of the supercharger 30 is the actual high-pressure state of the system after boosting. If the second monitoring unit is directly arranged at the high-pressure output end 12 of the compressor main body 10, only the gas state compressed by the compressor main body 10 can be monitored, and it cannot reflect the high-pressure data for the actual refrigeration cycle after boosting. Therefore, in this application, it is preferred to arrange the second monitoring unit at the output end of the supercharger 30, which should be known to those skilled in the art.

[0051] When the refrigerant amount in the compressor main body 10 is excessive, the amount of refrigerant liquid to be condensed in the condenser will also increase. However, the heat exchange area and cooling capacity of the condenser are relatively fixed. Therefore, the excessive refrigerant cannot be condensed in the condenser in time, which will cause the pressure in the condenser to rise. This pressure rise will be transmitted to the high-pressure output end 12 of the compressor main body 10 through the pipeline. So, the high-pressure data collected by the second monitoring unit will increase accordingly, and then it can be inferred that the refrigerant may be excessive.

[0052] Further, the present application is also provided with a main control unit connected to the first monitoring unit and the second monitoring unit, and the main control unit can adjust the refrigerant amount of the compressor main body 10 according to the monitored low-pressure data and high-pressure data.

[0053] Specifically, the main control unit compares the low-pressure data and high-pressure data collected by the first monitoring unit and the second monitoring unit with a preset low-pressure threshold and a preset high-pressure data. When the low-pressure data is lower than the preset low-pressure threshold, it indicates that the refrigerant amount may be insufficient and refrigerant needs to be injected into the compressor main body 10. When the high-pressure data is higher than the preset high-pressure threshold, it indicates that there may be too much refrigerant, and some refrigerant needs to be discharged to reduce the system pressure. When both the low-pressure data and the high-pressure data are within the normal range, no corresponding adjustment is required.

[0054] It can be understood that the above preset low-pressure threshold and preset high-pressure data are values determined based on experience. Refrigeration systems of different scales have differences in aspects such as structure, performance, and operation requirements, and the corresponding preset low-pressure threshold and preset high-pressure data will also be different. Therefore, the present application does not further limit the specific values of the above preset low-pressure threshold and preset high-pressure data.

[0055] In an optional embodiment, the present application is also provided with a filter 40 between the oil-water separator 20 and the low-pressure input end 11 of the compressor main body 10. The filter 40 filters the oil and moisture in the separated compressed gas and transmits the filtered low-pressure gas into the compressor main body 10. The filter 40 can further purify the gas entering the compressor main body 10, reduce the wear of the compressor main body 10 by impurities, and improve the reliability and stability of the compressor main body 10.

[0056] Further, the present application is also provided with a regulating valve (not shown in the figure) between the filter 40 and the low-pressure input end 11 of the compressor main body 10. When the high-pressure data monitored by the second monitoring unit is higher than the preset high-pressure threshold, the main control unit triggers the regulating valve to open to discharge the refrigerant until the monitored high-pressure data is adjusted to within the normal range.

[0057] As an optional implementation manner, the first monitoring unit provided by the present application includes a first pressure sensor 50 connected to the output end of the oil-water separator 20, and the first pressure sensor 50 is connected to the main control unit to transmit the collected low-pressure data to the main control unit. Since the gas state at the output end of the oil-water separator 20 is closer to the low-pressure state of the compressor main body 10, the present application arranges the first pressure sensor 50 at the output end of the oil-water separator 20 to accurately collect the low-pressure data entering the low-pressure input end 11 of the compressor main body 10.

[0058] Preferably, the first monitoring unit provided by the present application further includes a first pressure display meter 51 disposed at the output end of the oil-water separator 20. The first pressure display meter 51 can visually display the low-pressure data at the output end of the oil-water separator 20, facilitating the operator to directly know the current pressure state of the compressor main body 10 through the first pressure display meter 51, and providing convenience for on-site operation and equipment maintenance.

[0059] At the same time, the first pressure sensor 50 and the first pressure display meter 51 can verify the accuracy of the low-pressure data with each other. If there is a large deviation between the low-pressure data displayed by the two, it may mean that the first pressure sensor 50 or the first pressure display meter 51 fails, reminding the operator to check and repair in time, further increasing the reliability and stability of the monitoring system, and ensuring that the low-pressure data of the compressor main body 10 can be accurately monitored.

[0060] Correspondingly, the second monitoring unit provided by the present application includes a second pressure sensor 60 communicated with the output end of the supercharger 30, and the second pressure sensor 60 is connected to the main control unit to transmit the collected high-pressure data to the main control unit; the second monitoring unit further includes a second pressure display meter 61 disposed at the output end of the supercharger 30, so as to display the high-pressure data at the output end of the supercharger 30 through the second pressure display meter 61.

[0061] It should be noted that there are usually pointers on the first pressure display meter 51 and the second pressure display meter 61, and a pre-defined working range is displayed on the pressure display meter. Usually, the green area represents the normal range set by the system. When the pointer is within the green range on the display meter, it means that the current low-pressure data or high-pressure data is within the normal range, facilitating the operator to understand the low-pressure state and high-pressure state of the compressor main body 10 in real time, so as to perform on-site debugging and maintenance in time.

[0062] As an alternative implementation manner, please refer to Figure 2 , which is the functional module diagram of the monitoring system for the compressor provided by the embodiment of the present application. The main control unit provided by the present application includes a main controller, and the main controller is connected to the first monitoring unit, the second monitoring unit and the regulating valve in a wired or wireless manner. By setting the main controller, it is judged whether the low-pressure data detected by the first monitoring unit is lower than the preset low-pressure threshold, and whether the high-pressure data detected by the second monitoring unit is higher than the preset high-pressure threshold.

[0063] Exemplarily, the above-mentioned main controller can be set in the form of common controllers such as MCU (Microcontroller Unit), PFGA (Field Programmable Gate Array), PLC (Programmable Logic Controller), etc. As for the specific wiring method between the above-mentioned first monitoring unit, second monitoring unit, regulating valve and the main controller, and how to achieve adjustment control through the main controller, these are existing technologies that have been widely applied in the field of processors. The present application does not further limit the specific setting form of the above-mentioned main controller.

[0064] In the present application, the supercharger is connected to the high-pressure output end of the compressor body to boost the compressed gas output by the compressor body, increasing the pressure and temperature of the refrigerant, enhancing the refrigeration capacity of the refrigeration system, and meeting the demand for refrigeration capacity under different working conditions; the oil-water separator is connected to the low-pressure input end of the compressor body to separate the oil and moisture in the low-pressure compressed gas, preventing them from entering the compressor body, extending the service life of the compressor body, and ensuring the stable operation of the refrigeration system; at the same time, a first monitoring unit and a second monitoring unit are provided to monitor the low-pressure data and high-pressure data of the compressor body respectively, and the main control unit intelligently adjusts the refrigerant dosage according to the actual operating conditions of the compressor to ensure good refrigeration effects under different working environments and load conditions.

[0065] Based on the above monitoring system for the compressor, the present application also provides a monitoring method. Please refer to Figure 3 , which is the flowchart of the monitoring method for the compressor provided by the embodiment of the present application. The monitoring method includes the following steps:

[0066] Step S1: Collect the low-pressure data detected by the first monitoring unit and the high-pressure data detected by the second monitoring unit;

[0067] In the embodiment of the present application, the low-pressure data of the compressor body is collected through the first monitoring unit, and the high-pressure data of the compressor body is collected through the second monitoring unit. Moreover, the first monitoring unit and the second monitoring unit are connected to the main control unit. Therefore, the main control unit can obtain the low-pressure data detected by the first monitoring unit and the high-pressure data detected by the second monitoring unit.

[0068] Step S2: Determine whether the low-pressure data is lower than a preset low-pressure threshold and whether the high-pressure data detected by the second monitoring unit is higher than a preset high-pressure threshold;

[0069] In the embodiment of the present application, the main control unit compares the low-pressure data collected by the first monitoring unit with a preset low-pressure threshold. When the low-pressure data is lower than the preset low-pressure threshold, it is determined that the current refrigerant amount may be insufficient; at the same time, the high-pressure data collected by the second monitoring unit is compared with a preset high-pressure threshold. When the high-pressure data is higher than the preset high-pressure threshold, it is determined that there may be too much refrigerant in the current situation.

[0070] Step S3: Adjust the refrigerant amount according to the judgment result.

[0071] As an alternative implementation, please refer to Figure 4 , which is the flowchart for adjusting the refrigerant amount in the monitoring method for the compressor provided by the embodiment of the present application. The above adjustment of the refrigerant amount according to the judgment result includes:

[0072] Step S30: When the low-pressure data is lower than the preset low-pressure threshold, add refrigerant to the compressor body;

[0073] Step S31: When the high-pressure data is higher than the preset high-pressure threshold, trigger the regulating valve to open to discharge the refrigerant.

[0074] When the main control unit determines that the low-pressure data is lower than the preset low-pressure threshold, it indicates that the refrigerant amount may be insufficient and the refrigerant amount needs to be adjusted. For example, inject refrigerant into the compressor body until the adjusted low-pressure data is within the normal range; when the main control unit determines that the high-pressure data is higher than the preset high-pressure threshold, it indicates that there may be too much refrigerant and the refrigerant amount needs to be adjusted. For example, trigger the regulating valve to open to discharge the excess refrigerant until the adjusted high-pressure data is within the normal range.

[0075] Of course, other methods capable of adjusting the refrigerant amount are also feasible, and the present application does not impose too many restrictions on this.

[0076] For the specific details of how this monitoring method implements the above technical solution, please refer to the relevant description of the monitoring system for the compressor above, and the present application will not elaborate too much on this.

[0077] It can be understood that the technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as within the scope described in this specification.

[0078] The above embodiments are merely exemplary embodiments adopted for the purpose of illustrating the principles of the present application. However, the present application is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present application, and these modifications and improvements are also regarded as the protection scope of the present application.

Claims

1. A monitoring system for a compressor, characterized in that: include: A compressor body, used for compressing the refrigerant; an oil-water separator, connected to the low-pressure input end of the compressor body, for separating oil and water in the compressed gas; a supercharger, connected to the high-pressure output end of the compressor body, and used to supercharge the compressed gas output by the compressor body; A first monitoring unit, connected to the output end of the oil-water separator, for monitoring low-pressure data of the compressor body; A second monitoring unit, connected to the output end of the supercharger, for monitoring high pressure data of the compressor body; A main control unit is connected to the first monitoring unit and the second monitoring unit, and is used to adjust the refrigerant amount of the compressor body according to the monitored low-pressure data and high-pressure data.

2. The monitoring system for a compressor according to claim 1, characterized in that: A filter is also provided between the oil-water separator and the low-pressure input end of the compressor body. The filter is used to filter the oil and water in the compressed gas and transmit the filtered low-pressure gas to the compressor body.

3. The monitoring system for a compressor according to claim 2, characterized in that: A regulating valve is also provided between the filter and the compressor body. When the high pressure data detected by the second monitoring unit is higher than a preset high pressure threshold, the main control unit triggers the regulating valve to open to discharge the refrigerant.

4. The monitoring system for a compressor according to claim 1, characterized in that: The first monitoring unit includes a first pressure sensor connected to the output end of the oil-water separator. The first pressure sensor is connected to the main control unit and is used to transmit the collected low-pressure data to the main control unit.

5. The monitoring system for a compressor according to claim 4, characterized in that: The first monitoring unit further includes a first pressure display gauge provided at the output end of the oil-water separator, and the first pressure display gauge is used to display low pressure data at the output end of the oil-water separator.

6. The monitoring system for a compressor according to claim 1, characterized in that: The second monitoring unit includes a second pressure sensor connected to the output end of the supercharger, and the second pressure sensor is connected to the main control unit to transmit the collected high-voltage data to the main control unit.

7. The monitoring system for a compressor according to claim 6, characterized in that: The second monitoring unit includes a second pressure display gauge provided at the output end of the supercharger, and the second pressure display gauge is used to display high pressure data at the output end of the supercharger.

8. The monitoring system for a compressor according to claim 1, characterized in that: The main control unit includes a main controller, and the main controller is connected to the first monitoring unit and the second monitoring unit by wire or wirelessly; The main controller is used to determine whether the low-voltage data detected by the first monitoring unit is lower than a preset low-voltage threshold, and to determine whether the high-voltage data detected by the second monitoring unit is higher than a preset high-voltage threshold.

9. A monitoring method for a compressor, characterized in that: Applied to the monitoring system according to any one of claims 1 to 8, the monitoring method comprises the following steps: Collecting low-voltage data detected by the first monitoring unit and high-voltage data detected by the second monitoring unit; Determine whether the low-voltage data is lower than a preset low-voltage threshold, and whether the high-voltage data detected by the second monitoring unit is higher than a preset high-voltage threshold; The amount of refrigerant is adjusted according to the judgment result.

10. The monitoring method for a compressor according to claim 9, characterized in that: The step of adjusting the amount of refrigerant according to the judgment result includes: When the low pressure data is lower than a preset low pressure threshold, adding refrigerant to the compressor body; When the high pressure data is higher than a preset high pressure threshold, the regulating valve is triggered to open to discharge the refrigerant.

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