Self-checking refrigeration storage equipment

Abstract

The embodiment of the invention discloses self-checking refrigeration storage equipment. The self-checking refrigeration storage equipment comprises an information processing module and a low-temperature storage module, wherein the low-temperature storage module comprises a refrigeration compression mechanism, a detection mechanism, a storage pipe and a refrigeration pipeline; the refrigeration compression mechanism comprises a compressor, a condenser, an expansion valve, an evaporator and a centrifugal fan; the detection mechanism comprises a vibration sensor, a compressor current sensor and a temperature sensor module, the vibration sensor is installed on a shell of the compressor, the compressor current sensor is installed at the power input end of the compressor, the temperature sensor module comprises a compressor temperature sensor, and the compressor temperature sensor is installed on the shell of the compressor; the information processing module is in communication connection with the refrigeration compression mechanism and the detection mechanism and used for generating compressor fault reason information according to the vibration information, the compressor current information and the compressor temperature information. The self-checking refrigeration storage equipment can reduce the probability of sample damage.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of self-checking of refrigeration storage equipment, and in particular to a self-checking refrigeration storage equipment. Background Art

[0002] Refrigeration storage equipment is a device that preserves samples and other items at low temperatures. It has a complex structure, and temperature has an important impact on sample storage. Therefore, it is necessary to perform fault detection on the refrigeration storage equipment to prevent refrigeration storage equipment failures and refrigeration problems from affecting the quality of samples. Most of the related refrigeration storage equipment fault detection methods are to arrange staff to conduct regular inspections of each module of the refrigeration storage equipment.

[0003] However, the inventors have found that when the above-mentioned sample low-temperature storage method is used to store samples at low temperatures, the following technical problems often occur: Manual inspections are periodic. When a refrigeration storage device fails, it is usually not discovered by the staff until a long time later, causing the staff to fail to repair it in time, causing the temperature inside the refrigeration storage device to change, affecting the quality of the samples, and causing the samples to be damaged by the temperature.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the inventive concept. Summary of the invention

[0005] The content of this disclosure is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this disclosure is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] Some embodiments of the present disclosure provide a self-checking refrigeration storage device to solve one or more of the technical problems mentioned in the above background technology section.

[0007] Some embodiments of the present disclosure provide a self-checking refrigeration storage device, which includes: an information processing module and a low-temperature storage module, wherein the low-temperature storage module includes a refrigeration compression mechanism, a detection mechanism, a storage tube and a refrigeration pipeline, the refrigeration compression mechanism is connected to the refrigeration pipeline, and the refrigeration pipeline is located around the storage tube; the refrigeration compression mechanism includes a compressor, a condenser, an expansion valve, an evaporator and a centrifugal fan, the exhaust port of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the evaporator through the expansion valve, the outlet of the evaporator is connected to the suction port of the compressor through a return air pipe, the centrifugal fan is arranged on the side of the fin of the evaporator, the centrifugal fan is connected to the refrigeration pipeline, and the refrigeration pipeline is used to press the refrigeration compressor The cold air prepared by the refrigeration compression mechanism is transmitted to the periphery of the above-mentioned storage tube; the above-mentioned detection mechanism includes a vibration sensor, a compressor current sensor and a temperature sensor module, the above-mentioned vibration sensor is installed on the casing of the above-mentioned compressor, the above-mentioned compressor current sensor is installed on the power input terminal of the above-mentioned compressor, and the above-mentioned temperature sensor module includes a compressor temperature sensor, and the above-mentioned compressor temperature sensor is installed on the casing of the above-mentioned compressor; the above-mentioned information processing module is communicatively connected with the above-mentioned refrigeration compression mechanism and the above-mentioned detection mechanism, and the above-mentioned information processing module is used to receive the vibration information sent by the above-mentioned vibration sensor, the compressor current information sent by the above-mentioned compressor current sensor and the compressor temperature information sent by the above-mentioned compressor temperature sensor, and generate the compressor failure cause information according to the above-mentioned vibration information, compressor current information and compressor temperature information.

[0008] Optionally, the information processing module is further used to perform the following steps: generating compressor vibration characteristic information based on the vibration information, wherein the compressor vibration characteristic information is high-frequency vibration increase information, low-frequency vibration increase information or normal frequency vibration information; generating compressor current characteristic information based on the compressor current information, wherein the compressor current characteristic information is effective value fluctuation increase information, current surge shutdown information or normal fluctuation information; generating compressor temperature characteristic information based on the compressor temperature information, wherein the compressor temperature characteristic information is temperature drop information, temperature rise information or normal temperature range information; in response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is effective value fluctuation increase information, and the compressor temperature characteristic information is temperature rise information, generating bearing wear fault information based on the compressor vibration characteristic information; in response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is effective value fluctuation increase information, and the compressor temperature characteristic information is temperature rise information The characteristic information is low-frequency vibration increase information, the above-mentioned compressor current characteristic information is normal fluctuation information, and the above-mentioned compressor temperature characteristic information is normal temperature range information. According to the above-mentioned compressor vibration characteristic information, rotor fault information is generated; in response to determining that the above-mentioned compressor vibration characteristic information is high-frequency vibration increase information, the above-mentioned compressor current characteristic information is current surge shutdown information, and the above-mentioned compressor temperature characteristic information is temperature drop information, liquid refrigerant reflux fault information is generated according to the above-mentioned compressor current characteristic information; in response to determining that the above-mentioned compressor vibration characteristic information is high-frequency vibration increase information, the above-mentioned compressor current characteristic information is normal fluctuation information, and the above-mentioned compressor temperature characteristic information is temperature rise information, lubrication fault information is generated according to the above-mentioned compressor temperature characteristic information; the above-mentioned bearing wear fault information, the above-mentioned rotor fault information, the above-mentioned liquid refrigerant reflux fault information or the above-mentioned lubrication fault information is determined as the compressor fault cause information.

[0009] Optionally, the detection mechanism also includes an infrared thermal imager, a dust sensor and a pressure sensor module; the pressure sensor module also includes a condenser outlet pressure sensor, wherein the condenser outlet pressure sensor is installed at the outlet of the condenser, the infrared thermal imager is installed around the fins of the condenser, and the dust sensor is installed on the air inlet side of the condenser.

[0010] Optionally, the temperature sensor module further includes a condenser outlet temperature sensor, and the condenser outlet temperature sensor is installed at the outlet of the condenser.

[0011] Optionally, the information processing module is also used to perform the following steps: receiving the infrared thermal imaging information of the condenser sent by the infrared thermal imager; generating condenser temperature information based on the infrared thermal imaging information of the condenser; receiving the condenser outlet pressure information sent by the condenser outlet pressure sensor and the dust concentration information sent by the dust sensor; in response to determining that the condenser temperature information is greater than the preset condenser high temperature threshold, the condenser outlet pressure information is greater than the preset condenser outlet pressure threshold, and the dust concentration information is greater than the preset dust concentration threshold, generating condenser dirtiness and blockage degree information according to the dust concentration information; in response to determining that the condenser temperature information is greater than the preset condenser high temperature threshold, the condenser outlet pressure information is greater than the preset condenser outlet pressure threshold, and the dust concentration information is less than the preset dust concentration threshold, generating condenser fan fault information according to the condenser temperature information and the condenser outlet pressure information; and sending the condenser dirtiness and blockage degree information or condenser fan fault information to an associated smart device.

[0012] Optionally, the information processing module is also used to perform the following steps: receiving the condenser outlet temperature information sent by the condenser outlet temperature sensor; in response to determining that the condenser temperature information is the preset condenser low temperature threshold, the condenser outlet pressure information is greater than the preset condenser outlet pressure threshold, the dust concentration information is less than the preset dust concentration threshold, and the condenser outlet temperature information is less than the preset condenser outlet temperature threshold, generating excess refrigerant information based on the condenser temperature information and the condenser outlet temperature information; and sending the condenser dirtiness and blockage information or condensing fan failure information to the smart device.

[0013] Optionally, the above-mentioned detection mechanism also includes a pressure difference sensor module, the above-mentioned pressure difference sensor module includes a pre-valve pressure sensor and a post-valve pressure sensor, the above-mentioned pre-valve pressure sensor is installed at the front end of the above-mentioned expansion valve, and the above-mentioned post-valve pressure sensor is installed at the rear end of the above-mentioned expansion valve; the above-mentioned temperature sensor module also includes a pre-valve temperature sensor and a post-valve temperature sensor, the above-mentioned pre-valve temperature sensor is installed at the front end of the above-mentioned expansion valve, and the above-mentioned post-valve temperature sensor is installed at the rear end of the above-mentioned expansion valve.

[0014] Optionally, the information processing module is further used to perform the following steps: receiving the pre-valve pressure information sent by the pre-valve pressure sensor and the post-valve pressure information sent by the post-valve pressure sensor; determining the absolute value of the difference between the pre-valve pressure information and the post-valve pressure information as the expansion valve pressure difference; generating expansion valve pressure difference characteristic information based on the expansion valve pressure difference, wherein the expansion valve pressure difference characteristic information is a first-level pressure difference, a second-level pressure difference or a third-level pressure difference, and the first-level pressure difference is greater than the second-level pressure difference, greater than the rated pressure difference, and greater than the third-level pressure difference; receiving the pre-valve temperature information sent by the pre-valve temperature sensor and the post-valve temperature information sent by the post-valve temperature sensor; determining the difference between the pre-valve temperature information and the post-valve temperature information as the expansion valve temperature difference; generating an expansion valve pressure difference characteristic information based on the expansion valve temperature difference. Valve temperature difference characteristic information, wherein the above-mentioned expansion valve temperature difference characteristic information is valve rear temperature reduction information or valve rear temperature increase information; in response to determining that the above-mentioned expansion valve pressure difference characteristic information is a first-level pressure difference and the above-mentioned expansion valve temperature difference characteristic information is valve rear temperature reduction information, generating expansion valve blockage fault information according to the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference; in response to determining that the above-mentioned expansion valve pressure difference characteristic information is a second-level pressure difference and the above-mentioned expansion valve temperature difference characteristic information is valve rear temperature reduction information, generating expansion valve opening enlargement information according to the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference; in response to determining that the above-mentioned expansion valve pressure difference characteristic information is a third-level pressure difference and the above-mentioned expansion valve temperature difference characteristic information is valve rear temperature increase information, generating expansion valve opening reduction information according to the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference.

[0015] Optionally, the detection mechanism further includes a gas leakage sensor group and a refrigerant pipeline pressure sensor group, each refrigerant pressure sensor in the refrigerant pressure sensor group is respectively installed in each refrigerant sensing pipeline, the temperature sensor module further includes an evaporator inlet temperature sensor and an evaporator outlet temperature sensor, the evaporator inlet temperature sensor is installed at the inlet of the evaporator, the evaporator inlet temperature sensor is installed at the inlet of the evaporator, and each gas leakage sensor in the gas leakage sensor group is respectively installed at the pipeline welding point and the valve interface. The information processing module is further used to perform the following steps: receiving a gas concentration information set sent by each of the gas leakage sensors, wherein each gas leakage sensor corresponds to a gas leakage sensor identifier, and different gas leakage sensors correspond to different gas leakage sensor identifiers; determining whether the gas concentration information set includes gas concentration information that satisfies a preset gas leakage condition, and in response to determining that the gas concentration information set includes gas concentration information that satisfies the preset gas leakage condition, receiving a refrigerant pressure information set sent by each refrigerant pressure sensor; determining whether each refrigerant pressure information in the refrigerant pressure information set is less than a preset refrigerant pressure threshold; and in response to determining that each refrigerant pressure information in the refrigerant pressure information set is less than a preset refrigerant pressure threshold. The intelligent device detects that the evaporator pressure at the evaporator inlet temperature is less than the preset refrigerant pressure threshold, receives the evaporator inlet temperature information sent by the evaporator inlet temperature sensor and the evaporator inlet temperature information sent by the evaporator inlet temperature sensor; determines the absolute value of the difference between the evaporator inlet temperature information and the evaporator inlet temperature information as the evaporator temperature difference; determines whether the evaporator temperature difference is less than the preset evaporator temperature difference threshold; in response to determining that the evaporator temperature difference is less than the preset evaporator temperature difference threshold, determines the refrigerant leakage location point according to the gas leakage sensor identifier corresponding to the gas concentration information that meets the preset gas leakage condition; generates the refrigerant leakage degree information according to the refrigerant leakage location point; and sends the refrigerant leakage degree information to the associated intelligent device.

[0016] The above-mentioned embodiments of the present disclosure have the following beneficial effects: the probability of samples being damaged by temperature can be reduced by the self-checking refrigeration storage device of some embodiments of the present disclosure. Specifically, the reason why samples are damaged by temperature is that manual inspection is periodic. When the refrigeration storage device fails, it will usually be discovered by the staff after a long time, resulting in untimely maintenance by the staff, causing the temperature in the refrigeration storage device to change, affecting the quality of the sample. Based on this, the low-temperature storage module in the self-checking refrigeration storage device of some embodiments of the present disclosure includes a refrigeration compression mechanism, a detection mechanism, a storage tube and a refrigeration pipeline. The refrigeration compression mechanism is used to produce cold air, the detection mechanism is used to detect whether the refrigeration compressor fails, the storage tube is used to store samples, and the refrigeration pipeline is used to transmit cold air. The refrigeration compression mechanism includes a compressor, a condenser, an expansion valve, an evaporator and a centrifugal fan, and the detection mechanism includes a vibration sensor, a compressor current sensor and a temperature sensor module, so that various information of the compressor can be collected by the vibration sensor, the compressor current sensor and the temperature sensor module to determine whether the compressor fails, and the information processing module can process various information of the compressor collected by the detection mechanism, and then promptly determine the cause of the compressor failure, so that the staff can quickly repair the refrigeration storage device. Therefore, the self-checking refrigeration storage device of some embodiments of the present disclosure can reduce the probability of samples being damaged by temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that components and elements are not necessarily drawn to scale.

[0018] Figure 1 is a schematic diagram of the structure of some embodiments of the self-checking refrigeration storage device according to the present disclosure; Figure 2 is a schematic structural diagram of some embodiments of a refrigeration compression mechanism included in a self-checking refrigeration storage device according to the present disclosure; Figure 3 Schematic diagram of the structure of some embodiments of electronic devices in a self-checking refrigeration storage device according to the present disclosure. DETAILED DESCRIPTION

[0019] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0020] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0021] It should also be noted that, for ease of description, only the parts related to the relevant disclosure are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0022] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0023] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0024] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0025] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0026] Figure 1 Schematic diagram of the structure of some embodiments of the self-checking refrigeration storage device according to the present disclosure. Figure 1 It includes a low-temperature storage module 1 and a refrigeration compression mechanism 2.

[0027] Figure 2 It is a structural schematic diagram of some embodiments of the refrigeration compression mechanism included in the self-checking refrigeration storage device according to the present disclosure. Figure 2 It includes a compressor 21 , a condenser 22 , an expansion valve 23 , an evaporator 24 and a centrifugal fan 25 .

[0028] Figure 3 Schematic diagram of the structure of some embodiments of electronic devices in a self-checking refrigeration storage device according to the present disclosure. Figure 3 The system comprises a refrigeration compression mechanism 2, an information processing module 3 and a detection mechanism 4. The detection mechanism 4 comprises a vibration sensor 41, a compressor current sensor 42 and a temperature sensor module 43.

[0029] In some embodiments, the self-checking refrigeration storage device may include an information processing module 3 and a low-temperature storage module 1. The information processing module may be a central processing unit. The low-temperature storage module 1 may include a refrigeration compression mechanism 2, a detection mechanism 4, a storage tube and a refrigeration pipeline. The refrigeration compression mechanism 2 may be a compression mechanism for producing cold air. The detection mechanism 4 may be various sensors for detecting whether the refrigeration compressor has failed. The refrigeration pipeline may be a hollow tube for transmitting cold air. The storage tube may be a hollow tube for storing samples. The refrigeration compression mechanism 2 may be connected to the refrigeration pipeline. The refrigeration pipeline may be located around the storage tube. Specifically, the refrigeration pipeline may be a rotationally wound outer ring of the storage tube.

[0030] In some embodiments, the refrigeration compression mechanism 2 may include a compressor 21, a condenser 22, an expansion valve 23, an evaporator 24 and a centrifugal fan 25. The exhaust port of the compressor 21 may be connected to the inlet of the condenser 22. The outlet of the condenser 22 may be connected to the inlet of the evaporator 24 through the expansion valve 23. The outlet of the evaporator 24 may be connected to the air intake of the compressor 21 through a return air pipe. The centrifugal fan 25 may be arranged on the side of the fin of the evaporator 24. The centrifugal fan 25 may be connected to the refrigeration pipeline. The refrigeration pipeline may be used to transmit the cold air prepared by the refrigeration compression mechanism 2 to the surrounding of the storage tube.

[0031] In some embodiments, the detection mechanism 4 may include a vibration sensor, a compressor current sensor and a temperature sensor module. The compressor current sensor may be a current sensor installed at the power input terminal of the compressor 21. The vibration sensor may be installed on the housing of the compressor 21. The compressor current sensor may be installed at the power input terminal of the compressor 21. The temperature sensor module may include a compressor temperature sensor. The compressor temperature sensor may be installed on the housing of the compressor 21.

[0032] In some embodiments, the information processing module may be in communication with the refrigeration compression mechanism 2 and the detection mechanism 4. The information processing module may be used to receive vibration information sent by the vibration sensor, compressor current information sent by the compressor current sensor, and compressor temperature information sent by the compressor temperature sensor. And generate compressor failure cause information based on the vibration information, compressor current information, and compressor temperature information.

[0033] Optionally, the information processing module 3 may also be used to perform the following steps: The first step is to generate compressor vibration characteristic information based on the above vibration information. The above compressor vibration characteristic information can be high-frequency vibration increase information, low-frequency vibration increase information or normal frequency vibration information. Specifically, the above compressor vibration characteristic information can be any one of the following: high-frequency vibration increase information, low-frequency vibration increase information, normal frequency vibration information. The above high-frequency vibration increase information can characterize that the number of vibration frequencies greater than 400Hz in the vibration information is greater than the preset number of high-frequency vibration frequencies. The above preset number of high-frequency vibration frequencies can be the number of vibration frequencies greater than 400Hz that are preset. The above low-frequency vibration increase information can characterize that the number of vibration frequencies less than 60Hz in the vibration information is greater than the preset number of low-frequency vibration frequencies. The above preset number of low-frequency vibration frequencies can be the number of vibration frequencies less than 60Hz that are preset. The above normal frequency vibration information can characterize that the vibration frequencies in the vibration information are all within the normal vibration frequency range. In practice, first, the above information processor module can process the above vibration information through fast Fourier transform to obtain the vibration frequency information corresponding to the above vibration information. Then, the above-mentioned information processor module can determine the number of high-frequency vibration frequencies greater than 400 Hz and the number of low-frequency vibration frequencies less than 60 Hz in the vibration frequency information. Finally, in response to determining that the number of vibration frequencies greater than 400 Hz in the vibration frequency information is greater than the preset number of high-frequency vibration frequencies, the high-frequency vibration increase information is determined as the compressor vibration characteristic information. In response to determining that the number of vibration frequencies less than 60 Hz in the vibration frequency information is greater than the preset number of low-frequency vibration frequencies, the low-frequency vibration increase information is determined as the compressor vibration characteristic information. In response to determining that the vibration frequencies in the vibration frequency information are all within the normal vibration frequency range, the normal frequency vibration information is determined as the compressor vibration characteristic information.

[0034] The second step is to generate compressor current characteristic information based on the compressor current information. The compressor current characteristic information is effective value fluctuation increase information, current surge shutdown information or normal fluctuation information. In practice, in response to determining that the effective value of the current in the compressor current information is greater than the preset current effective value, the information processing module can determine the effective value fluctuation increase information as the compressor current characteristic information. In response to determining that the compressor current information represents a protection shutdown after an instantaneous current surge, the information processing module can determine the current surge shutdown information as the compressor current characteristic information. In response to determining that the current fluctuation in the compressor current information is within a preset normal current fluctuation range, the information processing module can determine the normal fluctuation information as the compressor current characteristic information.

[0035] The third step is to generate compressor temperature characteristic information based on the above compressor temperature information. The above compressor temperature characteristic information is temperature drop information, temperature rise information or normal temperature range information. In practice, in response to determining that the temperature in the above compressor temperature information is less than a preset low temperature threshold, the above information processing module can determine the temperature drop information as the compressor temperature characteristic information. The above preset low temperature threshold can be a preset threshold value that is less than the temperature representing the temperature drop. In response to determining that the temperature in the above compressor temperature information is greater than a preset high temperature threshold, the above information processing module can determine the temperature rise information as the compressor temperature characteristic information. The above preset high temperature threshold can be a preset threshold value that is greater than the temperature representing the temperature rise. In response to determining that the current fluctuation in the above compressor temperature information is within a preset normal current fluctuation range, the above information processing module can determine the normal fluctuation information as the compressor temperature characteristic information.

[0036] The fourth step, in response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is effective value fluctuation increase information, and the compressor temperature characteristic information is temperature rise information, generates bearing wear fault information according to the compressor vibration characteristic information. In practice, the information processing module can splice the compressor vibration characteristic information and the preset bearing wear fault template to obtain bearing wear fault information. Among them, the preset bearing wear fault template can be "bearing wear, compressor". The blank space can be used to fill in the compressor vibration characteristic information. The bearing wear fault information can be "bearing wear, compressor high-frequency vibration increase".

[0037] The fifth step, in response to determining that the compressor vibration characteristic information is low-frequency vibration increase information, the compressor current characteristic information is normal fluctuation information, and the compressor temperature characteristic information is normal temperature range information, generates rotor fault information according to the compressor vibration characteristic information. In practice, the information processing module can splice the compressor vibration characteristic information and the preset rotor fault template to obtain the rotor fault information. Among them, the preset rotor fault template can be "rotor unbalance fault, compressor". The blank space can be used to fill in the compressor current characteristic information. The rotor fault information can be "rotor unbalance fault, compressor high-frequency vibration increases".

[0038] Step 6. In response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is current surge shutdown information, and the compressor temperature characteristic information is temperature drop information, liquid refrigerant reflux fault information is generated according to the compressor current characteristic information. In practice, the information processing module can splice the compressor current characteristic information and the preset liquid refrigerant reflux fault template to obtain liquid refrigerant reflux information. Among them, the preset liquid refrigerant reflux template can be "liquid refrigerant reflux, compressor". The blank space can be used to fill in the compressor current characteristic information. The liquid refrigerant reflux information can be "liquid refrigerant reflux, compressor current surge shutdown".

[0039] The seventh step, in response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is normal fluctuation information, and the compressor temperature characteristic information is temperature rise information, generates lubrication fault information according to the compressor temperature characteristic information. In practice, the information processing module can splice the compressor temperature characteristic information and the preset lubrication fault template to obtain lubrication fault information. Among them, the preset lubrication fault template can be "lubrication fault, compressor". The blank space can be used to fill in the compressor temperature characteristic information. The lubrication fault information can be "lubrication fault, compressor temperature rise".

[0040] In the eighth step, the bearing wear fault information, the rotor fault information, the liquid refrigerant reflux fault information or the lubrication fault information is determined as the compressor fault cause information.

[0041] Furthermore, the information processing module may send the compressor failure cause information to an associated smart device to remind the staff to perform maintenance. The associated smart device may be a mobile phone of the staff.

[0042] Optionally, the detection mechanism 4 may further include an infrared thermal imager, a dust sensor and a pressure sensor module. The pressure sensor module may further include a condenser outlet pressure sensor. The condenser outlet pressure sensor may be installed at the outlet of the condenser 22. The infrared thermal imager may be installed around the fins of the condenser 22. The dust sensor may be installed on the air inlet side of the condenser 22.

[0043] Optionally, the temperature sensor module may further include a condenser outlet temperature sensor. The condenser outlet temperature sensor may be installed at the outlet of the condenser 22 .

[0044] Optionally, the information processing module 3 may also be used to perform the following steps: The first step is to receive the infrared thermal image information of the condenser sent by the infrared thermal imager.

[0045] The second step is to generate condenser temperature information based on the condenser infrared thermal image information. The condenser temperature information may be the temperature around the fins of the condenser 22. In practice, the information processing module may determine the average value of the temperature of each area in the condenser infrared thermal image information as the condenser temperature information.

[0046] The third step is to receive the condenser outlet pressure information sent by the condenser outlet pressure sensor and the dust concentration information sent by the dust sensor.

[0047] In the fourth step, in response to determining that the condenser temperature information is greater than the preset condenser high temperature threshold, the condenser outlet pressure information is greater than the preset condenser outlet pressure threshold, and the dust concentration information is greater than the preset dust concentration threshold, the condenser dirty blockage degree information is generated according to the dust concentration information. Among them, the preset condenser high temperature threshold can be a temperature greater than the threshold that indicates abnormal condenser temperature. The preset condenser outlet pressure threshold can be a pressure value greater than the threshold that indicates abnormal condenser outlet pressure. The preset dust concentration threshold can be a dust concentration value greater than the threshold that indicates abnormal dust concentration in the condenser. In practice, the information processing module can determine the condenser dirty blockage degree information according to the concentration range corresponding to the dust concentration information. For example, if the dust concentration information is [200μg / m³, 300μg / m³), the condenser dirty blockage degree information can be a condenser with mild dirty blockage. If the dust concentration information is [300μg / m³, 500μg / m³), the condenser dirty blockage degree information can be a condenser with moderate dirty blockage. The above dust concentration information is greater than 500μg / m³, and the above condenser blockage degree information may be that the condenser is severely blocked.

[0048] The fifth step, in response to determining that the above condenser temperature information is greater than the above preset condenser high temperature threshold, the above condenser outlet pressure information is greater than the above preset condenser outlet pressure threshold, and the above dust concentration information is less than the above preset dust concentration threshold, generates condenser fan fault information according to the above condenser temperature information and the above condenser outlet pressure information. In practice, the above information processing module can splice the above condenser temperature information, the above condenser outlet pressure information and the preset condenser fan fault template to obtain the condenser fan fault information. Among them, the above preset condenser fan fault template can be "Condenser fan fault, condenser". The blank space can be used to fill in the above condenser temperature information and the above condenser outlet pressure information.

[0049] The sixth step is to send the above-mentioned condenser dirtiness and blockage degree information or condensing fan failure information to the associated smart device.

[0050] Optionally, the information processing module 3 is further configured to perform the following steps: The first step is to receive the condenser outlet temperature information sent by the condenser outlet temperature sensor.

[0051] In the second step, in response to determining that the above-mentioned condenser temperature information is less than the preset condenser low temperature threshold, the above-mentioned condenser outlet pressure information is greater than the above-mentioned preset condenser outlet pressure threshold, the above-mentioned dust concentration information is less than the above-mentioned preset dust concentration threshold, and the above-mentioned condenser outlet temperature information is less than the preset condenser outlet temperature threshold, the refrigerant excess information is generated according to the above-mentioned condenser temperature information and the above-mentioned condenser outlet temperature information. Among them, the above-mentioned preset condenser low temperature threshold can be a temperature value less than the threshold that indicates that the condenser temperature is too low. In practice, the above-mentioned information processing module can splice the above-mentioned condenser temperature information, the above-mentioned condenser outlet temperature information and the preset condensing fan fault template to obtain the refrigerant excess information. Among them, the above-mentioned preset refrigerant excess template can be "refrigerant excess, condenser". The blank space can be used to fill in the above-mentioned condenser temperature information and the above-mentioned condenser outlet temperature information.

[0052] The third step is to send the condenser dirtiness and blockage degree information or the condenser fan failure information to the above-mentioned smart device.

[0053] Optionally, the detection mechanism 4 further includes a pressure difference sensor module. The pressure difference sensor module includes a pre-valve pressure sensor and a post-valve pressure sensor. The pre-valve pressure sensor is installed at the front end of the expansion valve. The post-valve pressure sensor is installed at the rear end of the expansion valve. The temperature sensor module further includes a pre-valve temperature sensor and a post-valve temperature sensor. The pre-valve temperature sensor is installed at the front end of the expansion valve. The post-valve temperature sensor is installed at the rear end of the expansion valve.

[0054] Optionally, the information processing module 3 may also be used to perform the following steps: The first step is to receive the pre-valve pressure information sent by the pre-valve pressure sensor and the post-valve pressure information sent by the post-valve pressure sensor.

[0055] In the second step, the absolute value of the difference between the pressure information before the valve and the pressure information after the valve is determined as the expansion valve pressure difference.

[0056] The third step is to generate the expansion valve pressure differential characteristic information according to the above expansion valve pressure differential. Among them, the above expansion valve pressure differential characteristic information can be a first-level pressure differential, a second-level pressure differential or a third-level pressure differential. The above-mentioned first-level pressure differential is greater than the above-mentioned second-level pressure differential, greater than the rated pressure differential, and greater than the above-mentioned third-level pressure differential. In practice, when the expansion valve pressure differential is greater than 300% of the rated pressure differential, the above-mentioned expansion valve pressure differential characteristic information can be a first-level pressure differential. When the expansion valve pressure differential is between 130% of the rated pressure differential and 300% of the rated pressure differential, the above-mentioned expansion valve pressure differential characteristic information can be a second-level pressure differential. When the expansion valve pressure differential is between 50% of the rated pressure differential and 80% of the rated pressure differential, the above-mentioned expansion valve pressure differential characteristic information can be a third-level pressure differential.

[0057] The fourth step is to receive the pre-valve temperature information sent by the pre-valve temperature sensor and the post-valve temperature information sent by the post-valve temperature sensor.

[0058] In the fifth step, the difference between the temperature information before the valve and the temperature information after the valve is determined as the expansion valve temperature difference.

[0059] Step 6: Generate expansion valve temperature difference characteristic information based on the expansion valve temperature difference. The expansion valve temperature difference characteristic information is valve post-temperature reduction information or valve post-temperature increase information. In practice, when the expansion valve temperature difference is less than the preset expansion valve low temperature difference threshold, the valve post-temperature reduction information is determined as the expansion valve temperature difference characteristic information. When the expansion valve temperature difference is greater than the preset expansion valve high temperature difference threshold, the valve post-temperature increase information is determined as the expansion valve temperature difference characteristic information.

[0060] In the seventh step, in response to determining that the expansion valve pressure difference characteristic information is the first-level pressure difference and the expansion valve temperature difference characteristic information is the temperature reduction information after the valve, the expansion valve blockage fault information is generated according to the expansion valve pressure difference and the expansion valve temperature difference. In practice, the information processing module can splice the expansion valve pressure difference, the expansion valve temperature difference and the preset expansion valve blockage fault template to obtain the expansion valve blockage fault information. Among them, the preset expansion valve blockage fault template can be "expansion valve blockage fault, expansion valve". The blank space can be used to fill in the expansion valve pressure difference and the expansion valve temperature difference.

[0061] In the eighth step, in response to determining that the expansion valve pressure difference characteristic information is a secondary pressure difference and the expansion valve temperature difference characteristic information is the valve post-temperature reduction information, the expansion valve opening expansion information is generated according to the expansion valve pressure difference and the expansion valve temperature difference. In practice, the information processing module can splice the expansion valve pressure difference, the expansion valve temperature difference and the preset expansion valve opening expansion template to obtain the expansion valve opening expansion information. Among them, the preset expansion valve opening expansion template can be "expansion valve opening expansion, expansion valve". The blank space can be used to fill in the expansion valve pressure difference and the expansion valve temperature difference.

[0062] In the ninth step, in response to determining that the expansion valve pressure difference characteristic information is the third-level pressure difference and the expansion valve temperature difference characteristic information is the temperature rise information after the valve, the expansion valve opening reduction information is generated according to the expansion valve pressure difference and the expansion valve temperature difference. In practice, the information processing module can splice the expansion valve pressure difference, the expansion valve temperature difference and the preset expansion valve opening reduction template to obtain the expansion valve opening reduction information. Among them, the preset expansion valve opening reduction template can be "expansion valve opening reduction, expansion valve". The blank space can be used to fill in the expansion valve pressure difference and the expansion valve temperature difference.

[0063] In the process of adopting technical solutions to solve the above technical problems, the following technical problem 2 is often accompanied: refrigerant leakage is one of the common faults of refrigeration storage equipment. Since there are many refrigerant leakage points in refrigeration storage equipment, it takes a long time to manually observe whether the refrigerant is leaking, and it is easy to make mistakes. When the refrigerant leaks and the staff fails to check the leakage point, the temperature in the refrigeration storage equipment changes, which further causes the sample to be damaged by the temperature. For the above technical problem 2, the conventional solution is generally: smear the refrigerant leakage points with soapy water, observe whether bubbles appear, and then judge whether the refrigerant has leaked. However, the above conventional solution still has the following problems: there are many refrigerant leakage points in refrigeration storage equipment, and the method of smearing the refrigerant leakage points with soapy water takes a long time and has a low accuracy rate, and there is still a high risk of causing the temperature in the refrigeration storage equipment to change.

[0064] Considering the problems of the above conventional solutions, facing the above technical problem 2: Refrigerant leakage is one of the common faults of refrigeration storage equipment. Since there are many refrigerant leakage points in refrigeration storage equipment, it takes a long time to manually observe whether the refrigerant is leaking, and it is easy to miss. When the refrigerant leaks and the staff fails to check the leakage point, the temperature in the refrigeration storage equipment changes, which further causes the sample to be damaged by the temperature. Combined with the current technical status, it can be decided to adopt the following solution: Optionally, the detection mechanism may further include a gas leakage sensor group and a refrigerant pipeline pressure sensor group. Each refrigerant pressure sensor in the refrigerant pressure sensor group may be installed in each refrigerant sensing pipeline. The temperature sensor module may further include an evaporator inlet temperature sensor and an evaporator outlet temperature sensor. The evaporator inlet temperature sensor may be installed at the inlet of the evaporator. The evaporator inlet temperature sensor may be installed at the inlet of the evaporator. Each gas leakage sensor in the gas leakage sensor group may be installed at a pipeline welding point and a valve interface.

[0065] Optionally, the above information processing module can also be used to perform the following steps: The first step is to receive the gas concentration information set sent by each of the above-mentioned gas leakage sensors. Each gas leakage sensor may correspond to a gas leakage sensor identifier. Different gas leakage sensors may correspond to different gas leakage sensor identifiers. The above-mentioned gas leakage sensor identifier may uniquely represent the gas leakage sensor. The above-mentioned gas leakage sensor identifier may include the location information of the gas leakage sensor. For example, the above-mentioned gas leakage sensor identifier may be "A1 gas leakage sensor" or "B2 gas leakage sensor". "A1" may represent a pipeline welding point at a first position. "B2" may represent a valve interface at a second position.

[0066] The second step is to determine whether the gas concentration information set includes gas concentration information that meets a preset gas leakage condition, wherein the preset gas leakage condition may be that the gas concentration corresponding to the gas concentration information is greater than 500 ppm.

[0067] The third step is to receive the refrigerant pressure information sets sent by the refrigerant pressure sensors in response to determining that the gas concentration information set includes the gas concentration information satisfying the preset gas leakage condition.

[0068] The fourth step is to determine whether each refrigerant pressure information in the refrigerant pressure information set is less than a preset refrigerant pressure threshold, wherein the preset refrigerant pressure threshold may be a pressure value indicating insufficient refrigerant in the pipeline if the pressure is less than the pressure threshold.

[0069] The fifth step, in response to determining that each refrigerant pressure information in the above refrigerant pressure information set is less than the above preset refrigerant pressure threshold, receives the evaporator inlet temperature information sent by the above evaporator inlet temperature sensor and the evaporator inlet temperature information sent by the above evaporator inlet temperature sensor.

[0070] In the sixth step, the absolute value of the difference between the evaporator inlet temperature information and the evaporator outlet temperature information is determined as the evaporator temperature difference.

[0071] The seventh step is to determine whether the evaporator temperature difference is less than a preset evaporator temperature difference threshold value, wherein the preset evaporator temperature difference threshold value may be a temperature difference indicating insufficient refrigerant in the evaporator when the temperature difference threshold value is less than the temperature difference threshold value.

[0072] In step 8, in response to determining that the evaporator temperature difference is less than the preset evaporator temperature difference threshold, the refrigerant leakage location is determined according to the gas leakage sensor identifier corresponding to the gas concentration information that satisfies the preset gas leakage condition. In practice, the location information in the gas leakage sensor identifier is determined as the refrigerant leakage location.

[0073] The ninth step is to generate refrigerant leakage degree information based on the above-mentioned refrigerant leakage location point and the gas concentration information that meets the preset gas leakage condition. In practice, first, the above-mentioned information processing module can generate the refrigerant leakage degree based on the gas concentration information that meets the preset gas leakage condition. As an example, in response to determining that the gas concentration information that meets the preset gas leakage condition is less than 1000ppm, a mild leakage is determined as the refrigerant leakage degree. In response to determining that the gas concentration information that meets the preset gas leakage condition is between 1000-2000ppm, a moderate leakage is determined as the refrigerant leakage degree. In response to determining that the gas concentration information that meets the preset gas leakage condition is greater than 2000ppm, a severe leakage is determined as the refrigerant leakage degree. Then, the above-mentioned information processing module can splice the above-mentioned refrigerant leakage location point and the refrigerant leakage degree to obtain the refrigerant leakage degree information.

[0074] The tenth step is to send the above refrigerant leakage degree information to the associated smart device.

[0075] The above-mentioned content on detecting whether the refrigerant is leaking is an inventive point of the embodiment of the present disclosure, which solves the second technical problem "Refrigerant leakage is one of the common faults of refrigeration storage equipment. Since there are many refrigerant leakage points in the refrigeration storage equipment, it takes a long time to manually observe whether the refrigerant is leaking, and it is easy to make mistakes. When the refrigerant leaks and the staff fails to check the leakage point, the temperature in the refrigeration storage equipment changes, and further causes the sample to be damaged by the temperature." The reasons for further causing the sample to be damaged by the temperature are as follows: Refrigerant leakage is one of the common faults of refrigeration storage equipment. Since there are many refrigerant leakage points in the refrigeration storage equipment, it takes a long time to manually observe whether the refrigerant is leaking, and it is easy to make mistakes. When the refrigerant leaks and the staff fails to check the leakage point, the temperature in the refrigeration storage equipment changes. If the above factors are solved, the risk of the sample being damaged by the temperature can be reduced. In order to achieve this effect, the detection mechanism in the self-checking refrigeration storage device of the present disclosure can also include a gas leakage sensor group, a refrigerant pipeline pressure sensor group, an evaporator inlet temperature sensor and an evaporator outlet temperature sensor. The gas concentration information checked by the gas leakage sensor group determines whether there is a gas leak, and then the refrigerant pressure information of the pipeline and the temperature difference at both ends of the evaporator are determined by the refrigerant pipeline pressure sensor group to determine whether there is a refrigerant leak, so as to exclude non-leakage reasons such as sensor failure or other gas interference, so as to more accurately determine whether there is a refrigerant leak. In addition, gas leakage sensors are respectively set at multiple pipeline welding points and valve interfaces that are prone to leakage, and a position mark is set for each gas leakage sensor, so that the gas leakage point can be more accurately determined by the position mark corresponding to the gas leakage sensor that detects the gas leak, and the degree of refrigerant leakage can be further determined by the gas concentration, so that the leakage point can be repaired faster and more accurately, improving the maintenance efficiency and further reducing the risk of damage to the sample due to temperature.

[0076] In the process of adopting technical solutions to solve the above technical problems, the following technical problem three often accompanies it: when repairing the refrigeration storage equipment, it is often necessary to shut down the refrigeration storage equipment. When the maintenance time is long, the temperature inside the refrigeration storage equipment changes, causing damage to the samples. For the above technical problem three, the conventional solution is generally: the staff takes out the samples and places them in other refrigeration storage equipment. However, the above conventional solution still has the following problem: the storage temperature of the samples is often low, and the body temperature of the staff may affect the samples, causing damage to the samples.

[0077] Considering the problems of the above conventional solutions, facing the above technical problem three: when repairing the refrigeration storage equipment, it is often necessary to shut down the refrigeration storage equipment. When the maintenance time is long, the temperature inside the refrigeration storage equipment changes, causing damage to the sample. Combined with the current technical situation, it can be decided to adopt the following solution: Optionally, the self-checking refrigeration storage device may further include a transport module and a standby low-temperature storage module. The transport module may include a mobile electric cylinder, a negative pressure adsorption power member, a rotating sample carrier, and at least one group of moving rods. The mobile electric cylinder may be used to drive the rotating sample carrier to move on the at least one group of moving rods. The negative pressure adsorption power member may be used to adsorb the sample into the rotating sample carrier. The rotating sample carrier may include at least one sample bearing hole. Each of the at least one sample bearing hole may be evenly distributed around the rotating sample carrier. The at least one group of moving rods may include a moving rod located above the low-temperature storage module and a moving rod located above the standby low-temperature storage module. In the working state, the transport module may move above the low-temperature storage module and above the standby low-temperature storage module. The standby low-temperature storage module may include a standby refrigeration compression mechanism, a standby storage tube, and a standby refrigeration pipeline. The standby refrigeration compression mechanism, the standby storage tube, and the standby refrigeration pipeline may be the same as the refrigeration compression mechanism, the storage tube, and the refrigeration pipeline included in the low-temperature storage module. The above-mentioned transportation module and the above-mentioned low-temperature storage can be communicatively connected with the above-mentioned information processing module.

[0078] Optionally, the above information processing module can also be used to perform the following steps: The first step is to obtain the set low temperature storage temperature corresponding to the low temperature storage module in response to determining that the upper refrigeration compression mechanism fails. In practice, the information processing module can obtain the set low temperature storage temperature corresponding to the low temperature storage module from the storage module. The storage module can be a memory associated with the processing module. The set low temperature storage temperature of the low temperature storage module can be stored in the storage module.

[0079] The second step is to adjust the temperature of the standby refrigeration compression mechanism according to the set low-temperature storage temperature. In practice, the information processing module can adjust the refrigeration temperature corresponding to the standby refrigeration compression mechanism to the set low-temperature storage temperature. As an example, the information processing module can adjust the refrigeration temperature corresponding to the standby refrigeration compression mechanism to the set low-temperature storage temperature by adjusting the cylinder volume of the compressor.

[0080] The third step is to generate sample transportation path information based on the pre-stored sample position information. The pre-stored sample position information may be the coordinates of each storage tube storing samples in the low-temperature storage module stored in the storage module. The sample transportation path information may be a coordinate sequence of the movement of the rotating sample carrier plate in the transportation module. In practice, first, the information processing module may determine the moving coordinate sequence between each coordinate in the pre-stored sample position information and the position coordinate of the corresponding storage tube in the standby refrigeration compression mechanism as a single sample transportation path. Then, the information processing module may merge the single sample transportation paths to obtain the sample transportation path information.

[0081] The fourth step is to control the transport module to perform the sample transport operation according to the sample transport path information. In practice, the information processing module can control the rotating sample carrier in the transport module to move according to the coordinate sequence in the sample transport path information.

[0082] The above-mentioned content related to transportation is an inventive point of the embodiment of the present disclosure, which solves the technical problem three "When repairing the refrigeration storage device, it is often necessary to shut down the refrigeration storage device. When the maintenance time is long, the temperature in the refrigeration storage device changes, causing damage to the sample". The reasons for the damage to the sample are as follows: When repairing the refrigeration storage device, it is often necessary to shut down the refrigeration storage device. When the maintenance time is long, the temperature in the refrigeration storage device changes. If the above factors are solved, the risk of sample damage can be reduced. In order to achieve this effect, the self-test refrigeration storage device of the present disclosure also includes a transportation module and a spare low-temperature storage module. The transportation module is used to transport samples between the low-temperature storage module and the spare low-temperature storage module. The spare low-temperature storage module is used to temporarily store the sample when the low-temperature storage module fails. When the current low-temperature storage module fails, the set low-temperature storage temperature of the current low-temperature storage module can be obtained, and the temperature of the spare low-temperature storage module can be adjusted to make the storage temperature of the spare low-temperature storage module more suitable for the sample, thereby reducing the impact of temperature changes on the sample. And the transportation is carried out by the transportation module, without contact with the human body, avoiding the sample from being affected by the human body temperature, thereby further reducing the risk of sample damage.

[0083] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A self-checking refrigeration storage device, characterized in that: It includes an information processing module and a low-temperature storage module, wherein: The low-temperature storage module includes a refrigeration compression mechanism, a detection mechanism, a storage tube and a refrigeration pipeline, the refrigeration compression mechanism is connected to the refrigeration pipeline, and the refrigeration pipeline is located around the storage tube; The refrigeration compression mechanism includes a compressor, a condenser, an expansion valve, an evaporator and a centrifugal fan, the exhaust port of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the evaporator through the expansion valve, the outlet of the evaporator is connected to the suction port of the compressor through a return air pipe, the centrifugal fan is arranged on the side of the fin of the evaporator, the centrifugal fan is connected to the refrigeration pipeline, and the refrigeration pipeline is used to transmit the cold air prepared by the refrigeration compression mechanism to the surrounding of the storage tube; The detection mechanism includes a vibration sensor, a compressor current sensor and a temperature sensor module, wherein the vibration sensor is mounted on the housing of the compressor, the compressor current sensor is mounted on the power input terminal of the compressor, and the temperature sensor module includes a compressor temperature sensor, which is mounted on the housing of the compressor; The information processing module is communicatively connected with the refrigeration compression mechanism and the detection mechanism. The information processing module is used to receive the vibration information sent by the vibration sensor, the compressor current information sent by the compressor current sensor and the compressor temperature information sent by the compressor temperature sensor, and generate compressor failure cause information based on the vibration information, compressor current information and compressor temperature information.

2. The self-checking refrigeration storage device according to claim 1, characterized in that: The information processing module is also used to perform the following steps: Generate compressor vibration characteristic information according to the vibration information, wherein the compressor vibration characteristic information is high-frequency vibration increase information, low-frequency vibration increase information or normal frequency vibration information; Generate compressor current characteristic information according to the compressor current information, wherein the compressor current characteristic information is effective value fluctuation increase information, current surge shutdown information or normal fluctuation information; Generate compressor temperature characteristic information according to the compressor temperature information, wherein the compressor temperature characteristic information is temperature drop information, temperature rise information or normal temperature range information; In response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is effective value fluctuation increase information, and the compressor temperature characteristic information is temperature rise information, generating bearing wear fault information according to the compressor vibration characteristic information; In response to determining that the compressor vibration characteristic information is low-frequency vibration increase information, the compressor current characteristic information is normal fluctuation information, and the compressor temperature characteristic information is normal temperature range information, generating rotor fault information according to the compressor vibration characteristic information; In response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is current surge shutdown information, and the compressor temperature characteristic information is temperature drop information, generating liquid refrigerant backflow fault information according to the compressor current characteristic information; In response to determining that the compressor vibration characteristic information is high-frequency vibration increase information, the compressor current characteristic information is normal fluctuation information, and the compressor temperature characteristic information is temperature rise information, generating lubrication fault information according to the compressor temperature characteristic information; The bearing wear fault information, the rotor fault information, the liquid refrigerant reflux fault information or the lubrication fault information is determined as compressor fault cause information.

3. The self-checking refrigeration storage device according to claim 1, characterized in that: The detection mechanism also includes an infrared thermal imager, a dust sensor and a pressure sensor module; The pressure sensor module also includes a condenser outlet pressure sensor, wherein the condenser outlet pressure sensor is installed at the outlet of the condenser, the infrared thermal imager is installed around the fins of the condenser, and the dust sensor is installed on the air inlet side of the condenser.

4. The self-checking refrigeration storage device according to claim 3, characterized in that: The temperature sensor module further includes a condenser outlet temperature sensor, and the condenser outlet temperature sensor is installed at the outlet of the condenser.

5. The self-checking refrigeration storage device according to claim 4, characterized in that: The information processing module is also used to perform the following steps: Receiving infrared thermal image information of the condenser sent by the infrared thermal imager; Generating condenser temperature information according to the condenser infrared thermal image information; Receiving the condenser outlet pressure information sent by the condenser outlet pressure sensor and the dust concentration information sent by the dust sensor; In response to determining that the condenser temperature information is greater than a preset condenser high temperature threshold, the condenser outlet pressure information is greater than a preset condenser outlet pressure threshold, and the dust concentration information is greater than a preset dust concentration threshold, generating condenser dirtiness and blockage degree information according to the dust concentration information; In response to determining that the condenser temperature information is greater than the preset condenser high temperature threshold, the condenser outlet pressure information is greater than the preset condenser outlet pressure threshold, and the dust concentration information is less than the preset dust concentration threshold, generating condenser fan fault information according to the condenser temperature information and the condenser outlet pressure information; The condenser dirtiness and blockage degree information or the condenser fan failure information is sent to the associated smart device.

6. The self-checking refrigeration storage device according to claim 5, characterized in that: The information processing module is also used to perform the following steps: Receiving condenser outlet temperature information sent by the condenser outlet temperature sensor; In response to determining that the condenser temperature information is less than a preset condenser low temperature threshold, the condenser outlet pressure information is greater than the preset condenser outlet pressure threshold, the dust concentration information is less than the preset dust concentration threshold, and the condenser outlet temperature information is less than a preset condenser outlet temperature threshold, generating refrigerant excess information according to the condenser temperature information and the condenser outlet temperature information; The condenser dirtiness and blockage degree information or the condenser fan failure information is sent to the smart device.

7. The self-checking refrigeration storage device according to claim 1, characterized in that: The detection mechanism further includes a pressure difference sensor module, the pressure difference sensor module includes a pre-valve pressure sensor and a post-valve pressure sensor, the pre-valve pressure sensor is installed at the front end of the expansion valve, and the post-valve pressure sensor is installed at the rear end of the expansion valve; The temperature sensor module further includes a pre-valve temperature sensor and a post-valve temperature sensor. The pre-valve temperature sensor is installed at the front end of the expansion valve, and the post-valve temperature sensor is installed at the rear end of the expansion valve.

8. The self-checking refrigeration storage device according to claim 7, characterized in that: The information processing module is also used to perform the following steps: Receiving the pre-valve pressure information sent by the pre-valve pressure sensor and the post-valve pressure information sent by the post-valve pressure sensor; Determine the absolute value of the difference between the pre-valve pressure information and the post-valve pressure information as the expansion valve pressure difference; Generate expansion valve pressure differential characteristic information according to the expansion valve pressure differential, wherein the expansion valve pressure differential characteristic information is a primary pressure differential, a secondary pressure differential, or a tertiary pressure differential, and the primary pressure differential is greater than the secondary pressure differential, greater than the rated pressure differential, and greater than the tertiary pressure differential; Receiving the pre-valve temperature information sent by the pre-valve temperature sensor and the post-valve temperature information sent by the post-valve temperature sensor; Determine the difference between the temperature information before the valve and the temperature information after the valve as the expansion valve temperature difference; Generate expansion valve temperature difference characteristic information according to the expansion valve temperature difference, wherein the expansion valve temperature difference characteristic information is valve rear temperature reduction information or valve rear temperature increase information; In response to determining that the expansion valve pressure difference characteristic information is a primary pressure difference and the expansion valve temperature difference characteristic information is post-valve temperature reduction information, generating expansion valve blockage fault information according to the expansion valve pressure difference and the expansion valve temperature difference; In response to determining that the expansion valve pressure difference characteristic information is a secondary pressure difference and the expansion valve temperature difference characteristic information is post-valve temperature reduction information, generating expansion valve opening enlargement information according to the expansion valve pressure difference and the expansion valve temperature difference; In response to determining that the expansion valve pressure difference characteristic information is the third-level pressure difference and the expansion valve temperature difference characteristic information is the post-valve temperature increase information, expansion valve opening degree reduction information is generated according to the expansion valve pressure difference and the expansion valve temperature difference.

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