A self-checking refrigerated storage device

Abstract

Embodiments of the present disclosure disclose a self-checking refrigerated storage device. The self-checking refrigerated storage device includes an information processing module and a low-temperature storage module. The low-temperature storage module includes a refrigeration compression mechanism, a detection mechanism, a storage tube, and a refrigeration pipeline; the refrigeration compression mechanism includes a compressor, a condenser, an expansion valve, an evaporator, and a centrifugal fan; the detection mechanism includes a vibration sensor, a compressor current sensor, and a temperature sensor module. The vibration sensor is installed on the outer shell of the compressor, the compressor current sensor is installed at the power input end of the compressor, and the temperature sensor module includes a compressor temperature sensor, and the compressor temperature sensor is installed on the housing of the compressor; the information processing module is communicatively connected to the refrigeration compression mechanism and the detection mechanism, and the information processing module is configured to generate compressor fault cause information based on the vibration information, the compressor current information, and the compressor temperature information. The self-checking refrigerated storage device can reduce the probability of sample damage.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of self - inspection of refrigerated storage devices, and particularly to a self - inspecting refrigerated storage device. Background Art

[0002] A refrigerated storage device is a device for storing items such as samples at a low temperature. It has a complex structure, and temperature has an important impact on sample storage. Therefore, it is necessary to detect faults in the refrigerated storage device to prevent faults in the refrigerated storage device and prevent problems with refrigeration from affecting the quality of samples. Most of the related methods for detecting faults in refrigerated storage devices are methods of arranging staff to conduct regular inspections on each module of the refrigerated storage device.

[0003] However, the inventors found that when using the above - mentioned method of storing samples at a low temperature, the following technical problems often exist:

[0004] Manual inspection is periodic. When a fault occurs in the refrigerated storage device, it is usually discovered by the staff after a long time, resulting in untimely maintenance by the staff, causing a change in the temperature inside the refrigerated storage device, affecting the quality of the samples, and causing damage to the samples due to the influence of temperature.

[0005] The above information disclosed in this background art section is only used to enhance the understanding of the background of the inventive concept. Summary of the Invention

[0006] This section of the present disclosure is used to briefly introduce concepts that will be described in detail in the subsequent Detailed Description section. This section of the present disclosure is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0007] Some embodiments of the present disclosure propose a self - inspecting refrigerated storage device to solve one or more of the technical problems mentioned in the above background art section.

[0008] Some embodiments of the present disclosure provide a self-checking refrigerated storage device, which includes an information processing module and a low-temperature storage module. Among them, 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 communicated with the inlet of the condenser, the outlet of the condenser is communicated with the inlet of the evaporator through the expansion valve, the outlet of the evaporator is communicated with the suction port of the compressor through a return air pipe, the centrifugal fan is arranged on the side of the fins of the evaporator, and the centrifugal fan is communicated with the refrigeration pipeline. The refrigeration pipeline is used to transmit the cold air prepared by the refrigeration compression mechanism to the periphery of the storage tube. The detection mechanism includes a vibration sensor, a compressor current sensor, and a temperature sensor module. The vibration sensor is installed on the outer shell of the compressor, the compressor current sensor is installed at the power input end of the compressor, and the temperature sensor module includes a compressor temperature sensor. The compressor temperature sensor is installed on the housing of the compressor. The information processing module is communicatively connected to the refrigeration compression mechanism and the detection mechanism. The information processing module is configured 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 fault cause information based on the vibration information, compressor current information, and compressor temperature information.

[0009] Optionally, the above information processing module is further configured to perform the following steps: generate compressor vibration characteristic information according to the above vibration information, where 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 above compressor current information, where the compressor current characteristic information is effective value fluctuation increase information, current sudden rise and shutdown information or normal fluctuation information; generate compressor temperature characteristic information according to the above compressor temperature information, where the compressor temperature characteristic information is temperature decrease information, temperature increase 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 increase information, generate 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, generate 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 sudden rise and shutdown information, and the compressor temperature characteristic information is temperature decrease information, generate liquid refrigerant reflux 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 increase information, generate lubrication fault information according to the compressor temperature characteristic information; determine the bearing wear fault information, the rotor fault information, the liquid refrigerant reflux fault information or the lubrication fault information as compressor fault cause information.

[0010] Optionally, the above detection mechanism further includes an infrared thermal imager, a dust sensor and a pressure sensor module; the pressure sensor module further includes a condenser outlet pressure sensor, where 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.

[0011] Optionally, the above temperature sensor module further includes a condenser outlet temperature sensor, and the condenser outlet temperature sensor is installed at the outlet of the condenser.

[0012] Optionally, the above information processing module is further configured to perform the following steps: receive the condenser infrared thermal image information sent by the above infrared thermal imager; generate condenser temperature information based on the above condenser infrared thermal image information; receive the condenser outlet pressure information sent by the above condenser outlet pressure sensor and the dust concentration information sent by the above dust sensor; in response to determining that the above condenser temperature information is greater than a preset condenser high temperature threshold, the above condenser outlet pressure information is greater than a preset condenser outlet pressure threshold, and the above dust concentration information is greater than a preset dust concentration threshold, generate condenser fouling degree information based on the above dust concentration information; 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, generate condensing fan failure information based on the above condenser temperature information and the above condenser outlet pressure information; send the above condenser fouling degree information or condensing fan failure information to an associated intelligent device.

[0013] Optionally, the above information processing module is further configured to perform the following steps: receive the condenser outlet temperature information sent by the above condenser outlet temperature sensor; in response to determining that the above condenser temperature information is less than the above preset condenser low temperature threshold, the above condenser outlet pressure information is greater than the above preset condenser outlet pressure threshold, the above dust concentration information is less than the above preset dust concentration threshold, and the above condenser outlet temperature information is less than a preset condenser outlet temperature threshold, generate refrigerant excess information based on the above condenser temperature information and the above condenser outlet temperature information; send the above condenser fouling degree information or condensing fan failure information to the above intelligent device.

[0014] Optionally, the above detection mechanism further includes a differential pressure sensor module, the differential pressure 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 above expansion valve, and the post-valve pressure sensor is installed at the rear end of the above expansion valve; the above 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 above expansion valve, and the post-valve temperature sensor is installed at the rear end of the above expansion valve.

[0015] Optionally, the above information processing module is further configured to perform the following steps: 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; 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 difference characteristic information according to the expansion valve pressure difference, wherein the expansion valve pressure difference characteristic information is a primary pressure difference, a secondary pressure difference or a tertiary pressure difference, and the primary pressure difference is greater than the secondary pressure difference is greater than the rated pressure difference is greater than the tertiary pressure difference; 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; determine the difference between the pre-valve temperature information and the post-valve temperature information 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 post-valve temperature decrease information or post-valve temperature increase information; in response to determining that the expansion valve pressure difference characteristic information is the primary pressure difference and the expansion valve temperature difference characteristic information is post-valve temperature decrease information, generate 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 the secondary pressure difference and the expansion valve temperature difference characteristic information is post-valve temperature decrease information, generate 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 tertiary pressure difference and the expansion valve temperature difference characteristic information is post-valve temperature increase information, generate expansion valve opening reduction information according to the expansion valve pressure difference and the expansion valve temperature difference.

[0016] Optionally, the above 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, and the evaporator inlet temperature sensor is installed at the inlet of the evaporator. 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 configured to perform the following steps: receiving a gas concentration information set sent by each of the gas leakage sensors, where 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 meets a preset gas leakage condition, and in response to determining that the gas concentration information set includes gas concentration information that meets 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; in response to determining that each refrigerant pressure information in the refrigerant pressure information set is less than the preset refrigerant pressure threshold, receiving 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; determining the absolute value of the difference between the evaporator inlet temperature information and the evaporator inlet temperature information as the evaporator temperature difference; determining whether the evaporator temperature difference is less than a preset evaporator temperature difference threshold; in response to determining that the evaporator temperature difference is less than the preset evaporator temperature difference threshold, determining the refrigerant leakage position point according to the gas leakage sensor identifier corresponding to the gas concentration information that meets the preset gas leakage condition; generating refrigerant leakage degree information according to the refrigerant leakage position point; and sending the refrigerant leakage degree information to the associated intelligent device.

[0017] The above-mentioned various embodiments of the present disclosure have the following beneficial effects: The self-checking refrigerated storage device according to some embodiments of the present disclosure can reduce the probability of damage to samples caused by temperature. Specifically, the reason for the damage to samples caused by temperature is as follows: Manual inspection is periodic. When a failure occurs in the refrigerated storage device, it is usually discovered by the staff after a long time, resulting in untimely maintenance by the staff, causing a change in the temperature inside the refrigerated storage device and affecting the quality of the samples. Based on this, the low-temperature storage module in the self-checking refrigerated storage device according to 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 generate 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. The detection mechanism includes a vibration sensor, a compressor current sensor, and a temperature sensor module. Thus, various information of the compressor can be collected through 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 timely determine the cause of the compressor failure, so as to facilitate the staff to quickly repair the refrigerated storage device. Therefore, the self-checking refrigerated storage device according to some embodiments of the present disclosure can reduce the probability of damage to samples caused by temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In combination with the accompanying drawings and with reference to the following specific embodiments, the above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more obvious. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn to scale.

[0019] Figure 1 is a schematic structural diagram of some embodiments of the self-checking refrigerated storage device according to the present disclosure;

[0020] Figure 2 is a schematic structural diagram of some embodiments of the refrigeration compression mechanism included in the self-checking refrigerated storage device according to the present disclosure;

[0021] Figure 3 is a schematic structural diagram of some embodiments of the electronic device in the self-checking refrigerated storage device according to the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0023] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "arranged" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0024] In addition, it should be noted that for the convenience of description, only parts related to the relevant disclosure are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0025] 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 of functions performed by these devices, modules or units or their interdependent relationships.

[0026] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0027] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0028] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0029] Figure 1 is a schematic structural diagram of some embodiments of a 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.

[0030] Figure 2 is a schematic structural 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.

[0031] Figure 3 It is a schematic structural diagram of some embodiments of an electronic device in a self-checking refrigerated storage device according to the present disclosure. Figure 3 It includes a refrigeration compression mechanism 2, an information processing module 3, and a detection mechanism 4. The above detection mechanism 4 includes a vibration sensor 41, a compressor current sensor 42, and a temperature sensor module 43.

[0032] In some embodiments, the above self-checking refrigerated storage device may include an information processing module 3 and a low-temperature storage module 1. Among them, the above information processing module may be a central processing unit. The above low-temperature storage module 1 may include a refrigeration compression mechanism 2, a detection mechanism 4, a storage tube, and a refrigeration pipeline. The above refrigeration compression mechanism 2 may be a compression mechanism for manufacturing cold air. The above detection mechanism 4 may be various sensors for detecting whether a refrigeration compressor fails. The above refrigeration pipeline may be a hollow tube for transmitting cold air. The above storage tube may be a hollow tube for storing samples. The above refrigeration compression mechanism 2 may be connected to the above refrigeration pipeline. The above refrigeration pipeline may be located around the above storage tube. Specifically, the above refrigeration pipeline may be rotationally wound around the outer circle of the above storage tube.

[0033] In some embodiments, the above 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 above compressor 21 may be communicated with the inlet of the above condenser 22. The outlet of the above condenser 22 may be communicated with the inlet of the above evaporator 24 through the above expansion valve 23. The outlet of the above evaporator 24 may be communicated with the suction port of the above compressor 21 through a return air pipe. The above centrifugal fan 25 may be arranged on the side of the fins of the above evaporator 24. The above centrifugal fan 25 may be communicated with the above refrigeration pipeline. The above refrigeration pipeline may be used to transmit the cold air prepared by the above refrigeration compression mechanism 2 to the periphery of the above storage tube.

[0034] In some embodiments, the above detection mechanism 4 may include a vibration sensor, a compressor current sensor, and a temperature sensor module. Among them, the above compressor current sensor may be a current sensor installed at the power input end of the above compressor 21. The above vibration sensor may be installed on the housing of the above compressor 21. The above compressor current sensor may be installed at the power input end of the above compressor 21. The above temperature sensor module may include a compressor temperature sensor. The above compressor temperature sensor may be installed on the housing of the above compressor 21.

[0035] In some embodiments, the above information processing module may be communicatively connected to the above refrigeration compression mechanism 2 and the above detection mechanism 4. The above information processing module may be configured to receive the vibration information sent by the above vibration sensor, the compressor current information sent by the above compressor current sensor, and the compressor temperature information sent by the above compressor temperature sensor. And generate compressor fault cause information based on the above vibration information, compressor current information, and compressor temperature information.

[0036] Optionally, the above information processing module 3 may further be configured to perform the following steps:

[0037] First step, generate compressor vibration characteristic information based on the above vibration information. Among them, the above compressor vibration characteristic information may be high-frequency vibration increase information, low-frequency vibration increase information, or normal frequency vibration information. Specifically, the above compressor vibration characteristic information may 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 may indicate that the number of vibration frequencies greater than 400 Hz in the vibration information is greater than the preset high-frequency vibration frequency number. The above preset high-frequency vibration frequency number may be the number of vibration frequencies greater than 400 Hz set in advance. The above low-frequency vibration increase information may indicate that the number of vibration frequencies less than 60 Hz in the vibration information is greater than the preset low-frequency vibration frequency number. The above preset low-frequency vibration frequency number may be the number of vibration frequencies less than 60 Hz set in advance. The above normal frequency vibration information may indicate that the vibration frequencies in the vibration information are all within the normal vibration frequency range. In practice, first, the above information processor module may process the above vibration information through fast Fourier transform to obtain the vibration frequency information corresponding to the above vibration information. Then, the above information processor module may 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 high-frequency vibration frequency number, 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 low-frequency vibration frequency number, 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.

[0038] Step 2: Generate compressor current characteristic information based on the above compressor current information. Among them, the above compressor current characteristic information is increased effective value fluctuation information, current sudden increase and shutdown information, or normal fluctuation information. In practice, in response to determining that the effective value of the current in the above compressor current information is greater than the preset current effective value, the above information processing module may determine the increased effective value fluctuation information as the compressor current characteristic information. In response to determining that the above compressor current information indicates protection shutdown after a sudden increase in instantaneous current, the above information processing module may determine the current sudden increase and shutdown information as the compressor current characteristic information. In response to determining that the current fluctuation in the above compressor current information is within the preset normal current fluctuation range, the above information processing module may determine the normal fluctuation information as the compressor current characteristic information.

[0039] Step 3: Generate compressor temperature characteristic information based on the above compressor temperature information. Among them, 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 the preset low temperature threshold, the above information processing module may determine the temperature drop information as the compressor temperature characteristic information. Among them, the above preset low temperature threshold may be a threshold preset to be less than the temperature indicating a temperature drop. In response to determining that the temperature in the above compressor temperature information is greater than the preset high temperature threshold, the above information processing module may determine the temperature rise information as the compressor temperature characteristic information. Among them, the above preset high temperature threshold may be a threshold preset to be greater than the temperature indicating a temperature rise. In response to determining that the current fluctuation in the above compressor temperature information is within the preset normal current fluctuation range, the above information processing module may determine the normal fluctuation information as the compressor temperature characteristic information.

[0040] Step 4: In response to determining that the above compressor vibration characteristic information is increased high-frequency vibration information, the above compressor current characteristic information is increased effective value fluctuation information, and the above compressor temperature characteristic information is temperature rise information, generate bearing wear fault information based on the above compressor vibration characteristic information. In practice, the above information processing module may splice the above compressor vibration characteristic information and a preset bearing wear fault template to obtain the bearing wear fault information. Among them, the above preset bearing wear fault template may be "The bearing is worn, compressor". The blank can be used to fill in the above compressor vibration characteristic information. The above bearing wear fault information may be "The bearing is worn, compressor high-frequency vibration increases".

[0041] Step 5: In response to determining that the above compressor vibration characteristic information is low-frequency vibration increase information, the above compressor current characteristic information is normal fluctuation information, and the above compressor temperature characteristic information is within the normal temperature range information, generate rotor fault information based on the above compressor vibration characteristic information. In practice, the above information processing module can splice the above compressor vibration characteristic information with a preset rotor fault template to obtain rotor fault information. Among them, the above preset rotor fault template can be "The rotor has an imbalance fault, compressor". The blank can be used to fill in the above compressor current characteristic information. The above rotor fault information can be "The rotor has an imbalance fault, compressor high-frequency vibration increases".

[0042] Step 6: In response to determining that the above compressor vibration characteristic information is high-frequency vibration increase information, the above compressor current characteristic information is current sudden increase and shutdown information, and the above compressor temperature characteristic information is temperature decrease information, generate liquid refrigerant reflux fault information based on the above compressor current characteristic information. In practice, the above information processing module can splice the above compressor current characteristic information with a preset liquid refrigerant reflux fault template to obtain liquid refrigerant reflux information. Among them, the above preset liquid refrigerant reflux template can be "Liquid refrigerant reflux, compressor". The blank can be used to fill in the above compressor current characteristic information. The above liquid refrigerant reflux information can be "Liquid refrigerant reflux, compressor current sudden increase and shutdown".

[0043] Step 7: In response to determining that the above compressor vibration characteristic information is high-frequency vibration increase information, the above compressor current characteristic information is normal fluctuation information, and the above compressor temperature characteristic information is temperature increase information, generate lubrication fault information based on the above compressor temperature characteristic information. In practice, the above information processing module can splice the above compressor temperature characteristic information with a preset lubrication fault template to obtain lubrication fault information. Among them, the above preset lubrication fault template can be "Lubrication fault, compressor". The blank can be used to fill in the above compressor temperature characteristic information. The above lubrication fault information can be "Lubrication fault, compressor temperature increase".

[0044] Step 8: Determine the above bearing wear fault information, the above rotor fault information, the above liquid refrigerant reflux fault information, or the above lubrication fault information as the compressor fault cause information.

[0045] Furthermore, the above information processing module can send the above compressor fault cause information to the associated intelligent device to remind the staff to perform maintenance. The above associated intelligent device can be the staff's mobile phone.

[0046] Optionally, the above detection mechanism 4 may further include an infrared thermal imager, a dust sensor, and a pressure sensor module. The above pressure sensor module may further include a condenser outlet pressure sensor. Among them, the above condenser outlet pressure sensor may be installed at the outlet of the above condenser 22. The above infrared thermal imager may be installed around the fins of the above condenser 22. The above dust sensor may be installed on the air inlet side of the above condenser 22.

[0047] Optionally, the above temperature sensor module may further include a condenser outlet temperature sensor. The above condenser outlet temperature sensor may be installed at the outlet of the above condenser 22.

[0048] Optionally, the above information processing module 3 may also be used to perform the following steps:

[0049] First step, receive the condenser infrared thermal image information sent by the above infrared thermal imager.

[0050] Second step, generate condenser temperature information according to the above condenser infrared thermal image information. Among them, the above condenser temperature information may be the temperature around the fins of the above condenser 22. In practice, the above information processing module may determine the average value of the temperatures of each area in the above condenser infrared thermal image information as the condenser temperature information.

[0051] Third step, receive the condenser outlet pressure information sent by the above condenser outlet pressure sensor and the dust concentration information sent by the above dust sensor.

[0052] Fourth step, in response to determining that the above condenser temperature information is greater than a preset condenser high temperature threshold, the above condenser outlet pressure information is greater than a preset condenser outlet pressure threshold, and the above dust concentration information is greater than a preset dust concentration threshold, generate condenser fouling degree information according to the above dust concentration information. Among them, the above preset condenser high temperature threshold may be a temperature greater than which indicates abnormal condenser temperature. The above preset condenser outlet pressure threshold may be a pressure value greater than which indicates abnormal condenser outlet pressure. The above preset dust concentration threshold may be a dust concentration value greater than which indicates abnormal dust concentration in the condenser. In practice, the above information processing module may determine the condenser fouling degree information according to the concentration range corresponding to the above dust concentration information. For example, if the above dust concentration information is in [200 μg / m³, 300 μg / m³), the above condenser fouling degree information may be mild condenser fouling. If the above dust concentration information is in [300 μg / m³, 500 μg / m³), the above condenser fouling degree information may be moderate condenser fouling. If the above dust concentration information is greater than 500 μg / m³, the above condenser fouling degree information may be severe condenser fouling.

[0053] Step 5: 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, generate a condensing fan failure message based on the above condenser temperature information and the above condenser outlet pressure information. In practice, the above information processing module may splice the above condenser temperature information, the above condenser outlet pressure information, and a preset condensing fan failure template to obtain the condensing fan failure message. Among them, the above preset condensing fan failure template may be "Condensing fan failure, condenser". The blank can be used to fill in the above condenser temperature information and the above condenser outlet pressure information.

[0054] Step 6: Send the above condenser fouling degree information or condensing fan failure message to the associated intelligent device.

[0055] Optionally, the above information processing module 3 is further configured to perform the following steps:

[0056] Step 1: Receive the condenser outlet temperature information sent by the above condenser outlet temperature sensor.

[0057] Step 2: In response to determining that the above condenser temperature information is less than the preset condenser low temperature threshold, the above condenser outlet pressure information is greater than the above preset condenser outlet pressure threshold, the above dust concentration information is less than the above preset dust concentration threshold, and the above condenser outlet temperature information is less than the preset condenser outlet temperature threshold, generate a refrigerant overcharge message based on the above condenser temperature information and the above condenser outlet temperature information. Among them, the above preset condenser low temperature threshold may be a temperature value less than which indicates that the condenser temperature is too low. In practice, the above information processing module may splice the above condenser temperature information, the above condenser outlet temperature information, and a preset refrigerant overcharge template to obtain the refrigerant overcharge message. Among them, the above preset refrigerant overcharge template may be "Refrigerant overcharge, condenser". The blank can be used to fill in the above condenser temperature information and the above condenser outlet temperature information.

[0058] Step 3: Send the above condenser fouling degree information or condensing fan failure message to the above intelligent device.

[0059] Optionally, the above detection mechanism 4 further includes a differential pressure sensor module. The differential pressure 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 above expansion valve. The post-valve pressure sensor is installed at the rear end of the above expansion valve. The above 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 above expansion valve. The post-valve temperature sensor is installed at the rear end of the above expansion valve.

[0060] Optionally, the above information processing module 3 can also be used to perform the following steps:

[0061] In the first step, receive the pre-valve pressure information sent by the above pre-valve pressure sensor and the post-valve pressure information sent by the above post-valve pressure sensor.

[0062] In the second step, determine the absolute value of the difference between the above pre-valve pressure information and the above post-valve pressure information as the expansion valve pressure difference.

[0063] In the third step, generate expansion valve pressure difference characteristic information according to the above expansion valve pressure difference. Among them, the above expansion valve pressure difference characteristic information can be a first-level pressure difference, a second-level pressure difference or a third-level pressure difference. The above first-level pressure difference is greater than the above second-level pressure difference is greater than the rated pressure difference is greater than the above third-level pressure difference. In practice, when the expansion valve pressure difference is greater than 300% of the rated pressure difference, the above expansion valve pressure difference characteristic information can be the first-level pressure difference. When the expansion valve pressure difference is between 130% and 300% of the rated pressure difference, the above expansion valve pressure difference characteristic information can be the second-level pressure difference. When the expansion valve pressure difference is between 50% and 80% of the rated pressure difference, the above expansion valve pressure difference characteristic information can be the third-level pressure difference.

[0064] In the fourth step, receive the pre-valve temperature information sent by the above pre-valve temperature sensor and the post-valve temperature information sent by the above post-valve temperature sensor.

[0065] In the fifth step, determine the difference between the above pre-valve temperature information and the above post-valve temperature information as the expansion valve temperature difference.

[0066] In the sixth step, generate expansion valve temperature difference characteristic information according to the above expansion valve temperature difference. Among them, the above expansion valve temperature difference characteristic information is post-valve temperature decrease information or post-valve temperature increase information. In practice, when the above expansion valve temperature difference is less than the preset above expansion valve low temperature difference threshold, the post-valve temperature decrease information is determined as the expansion valve temperature difference characteristic information. When the above expansion valve temperature difference is greater than the preset above expansion valve high temperature difference threshold, the post-valve temperature increase information is determined as the expansion valve temperature difference characteristic information.

[0067] In the seventh step, in response to determining that the above expansion valve pressure difference characteristic information is the first-level pressure difference and the above expansion valve temperature difference characteristic information is the post-valve temperature decrease information, generate expansion valve blockage fault information according to the above expansion valve pressure difference and the above expansion valve temperature difference. In practice, the above information processing module can splice the above expansion valve pressure difference, the above expansion valve temperature difference and a preset expansion valve blockage fault template to obtain the expansion valve blockage fault information. Among them, the above preset expansion valve blockage fault template can be "Expansion valve blockage fault, expansion valve". The blank can be used to fill in the above expansion valve pressure difference and the above expansion valve temperature difference.

[0068] Step 8: In response to determining that the above-mentioned expansion valve pressure difference characteristic information is a secondary pressure difference and the above-mentioned expansion valve temperature difference characteristic information is information indicating a decrease in the temperature after the valve, generate expansion valve opening increase information based on the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference. In practice, the above-mentioned information processing module can splice the above-mentioned expansion valve pressure difference, the above-mentioned expansion valve temperature difference, and a preset expansion valve opening increase template to obtain the expansion valve opening increase information. Among them, the above-mentioned preset expansion valve opening increase template can be "The expansion valve opening increases, expansion valve". The blank can be used to fill in the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference.

[0069] Step 9: In response to determining that the above-mentioned expansion valve pressure difference characteristic information is a tertiary pressure difference and the above-mentioned expansion valve temperature difference characteristic information is information indicating an increase in the temperature after the valve, generate expansion valve opening decrease information based on the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference. In practice, the above-mentioned information processing module can splice the above-mentioned expansion valve pressure difference, the above-mentioned expansion valve temperature difference, and a preset expansion valve opening decrease template to obtain the expansion valve opening decrease information. Among them, the above-mentioned preset expansion valve opening decrease template can be "The expansion valve opening decreases, expansion valve". The blank can be used to fill in the above-mentioned expansion valve pressure difference and the above-mentioned expansion valve temperature difference.

[0070] In the process of adopting technical solutions to solve the above-mentioned technical problems, there is often another technical problem as follows: Refrigerant leakage is one of the common faults in refrigeration storage equipment. Since there are many refrigerant leakage prone points in the refrigeration storage equipment, it takes a long time to manually observe whether there is refrigerant leakage and it is easy to miss. When the refrigerant leaks and the staff fails to detect the leakage point, the temperature inside the refrigeration storage equipment changes, further causing the samples to be damaged due to the influence of temperature. For the above-mentioned technical problem 2, the conventional solution is generally: Apply soapy water to the refrigerant leakage prone points and observe whether bubbles appear to determine whether the refrigerant leaks. However, the above-mentioned conventional solution still has the following problems: There are many refrigerant leakage prone points in the refrigeration storage equipment. The method of applying soapy water to the refrigerant leakage prone points takes a long time and has a low accuracy rate, and there is still a relatively high risk of causing the temperature inside the refrigeration storage equipment to change.

[0071] Considering the problems of the above-mentioned conventional solution, in the face of the above-mentioned technical problem 2: Refrigerant leakage is one of the common faults in refrigeration storage equipment. Since there are many refrigerant leakage prone points in the refrigeration storage equipment, it takes a long time to manually observe whether there is refrigerant leakage and it is easy to miss. When the refrigerant leaks and the staff fails to detect the leakage point, the temperature inside the refrigeration storage equipment changes, further causing the samples to be damaged due to the influence of temperature. Combining the technical status quo, the following solution can be decided upon:

[0072] Optionally, the above detection mechanism may further include a gas leakage sensor group and a refrigerant pipeline pressure sensor group. Each refrigerant pressure sensor in the above refrigerant pressure sensor group may be respectively installed in each refrigerant sensing pipeline. The above temperature sensor module may further include an evaporator inlet temperature sensor and an evaporator outlet temperature sensor. The above evaporator inlet temperature sensor may be installed at the inlet of the above evaporator. The above evaporator inlet temperature sensor may be installed at the inlet of the above evaporator. Each gas leakage sensor in the above gas leakage sensor group may be respectively installed at pipeline welding points and valve interfaces.

[0073] Optionally, the above information processing module may further be used to perform the following steps:

[0074] First step, receive the gas concentration information set sent by each of the above gas leakage sensors. Among them, each gas leakage sensor may correspond to a gas leakage sensor identifier. The gas leakage sensor identifiers corresponding to different gas leakage sensors may be different. The above gas leakage sensor identifier may uniquely represent the gas leakage sensor. The above gas leakage sensor identifier may include the location information of the gas leakage sensor. For example, the above gas leakage sensor identifier may be "A1 gas leakage sensor" or "B2 gas leakage sensor". "A1" may represent the pipeline welding point at the first position. "B2" may represent the valve interface at the second position.

[0075] Second step, determine whether the gas concentration information set includes gas concentration information that meets the preset gas leakage condition. Among them, the above preset gas leakage condition may be that the gas concentration corresponding to the gas concentration information > 500 ppm.

[0076] Third step, in response to determining that the gas concentration information set includes gas concentration information that meets the above preset gas leakage condition, receive the refrigerant pressure information set sent by each refrigerant pressure sensor.

[0077] Fourth step, determine whether each refrigerant pressure information in the above refrigerant pressure information set is less than a preset refrigerant pressure threshold. Among them, the above preset refrigerant pressure threshold may be a pressure value indicating that the refrigerant in the pipeline is insufficient when it is less than this pressure threshold.

[0078] 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, receive 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.

[0079] Sixth step, determine the absolute value of the difference between the above evaporator inlet temperature information and the above evaporator inlet temperature information as the evaporator temperature difference.

[0080] Step 7: Determine whether the temperature difference of the evaporator is less than a preset evaporator temperature difference threshold. Among them, the preset evaporator temperature difference threshold can be a temperature difference indicating insufficient refrigerant in the evaporator when the temperature difference is less than this threshold.

[0081] Step 8: In response to determining that the temperature difference of the evaporator is less than the preset evaporator temperature difference threshold, determine the refrigerant leakage position point according to the gas leakage sensor identifier corresponding to the gas concentration information that meets the preset gas leakage condition. In practice, the position information in the gas leakage sensor identifier is determined as the refrigerant leakage position point.

[0082] Step 9: Generate refrigerant leakage degree information according to the refrigerant leakage position point and the gas concentration information that meets the preset gas leakage condition. In practice, first, the information processing module can generate the refrigerant leakage degree according to 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 1000 ppm, determine the refrigerant leakage degree as a minor leakage. In response to determining that the gas concentration information that meets the preset gas leakage condition is between 1000 - 2000 ppm, determine the refrigerant leakage degree as a moderate leakage. In response to determining that the gas concentration information that meets the preset gas leakage condition is greater than 2000 ppm, determine the refrigerant leakage degree as a severe leakage. Then, the information processing module can splice the refrigerant leakage position point and the refrigerant leakage degree to obtain the refrigerant leakage degree information.

[0083] Step 10: Send the refrigerant leakage degree information to the associated intelligent device.

[0084] The above - mentioned related content about detecting refrigerant leakage is an inventive point of the embodiments of the present disclosure, which solves Technical Problem 2: "Refrigerant leakage is one of the common faults in refrigerated storage devices. Since there are many points where the refrigerant in the refrigerated storage device is likely to leak, it takes a long time to manually observe whether the refrigerant leaks, and it is easy to miss. When the refrigerant leaks and the staff fails to detect the leakage point, the temperature in the refrigerated storage device changes, further causing the sample to be damaged due to the influence of temperature." The reason for the further damage to the sample due to temperature influence is as follows: Refrigerant leakage is one of the common faults in refrigerated storage devices. Since there are many points where the refrigerant in the refrigerated storage device is likely to leak, it takes a long time to manually observe whether the refrigerant leaks, and it is easy to miss. When the refrigerant leaks and the staff fails to detect the leakage point, the temperature in the refrigerated storage device changes. If the above - mentioned factors are solved, the risk of the sample being damaged due to temperature influence can be reduced. To achieve this effect, the detection mechanism in the self - checking refrigerated storage device of the present disclosure can further include a gas leakage sensor group, a refrigerant pipeline pressure sensor group, an evaporator inlet temperature sensor, and an evaporator outlet temperature sensor. Determine whether there is gas leakage through the gas concentration information checked by the gas leakage sensor group, and then determine whether there is refrigerant leakage by determining the refrigerant pressure information of the pipeline through the refrigerant pipeline pressure sensor group and the temperature difference at both ends of the evaporator, so as to exclude non - leakage reasons such as sensor failures or other gas interferences, and thus more accurately determine whether there is refrigerant leakage. In addition, gas leakage sensors are respectively set at multiple pipeline welding points and valve interfaces where leakage is likely to occur, and position identifiers are set for each gas leakage sensor. Thus, the gas leakage point can be more accurately determined through the position identifier corresponding to the gas leakage sensor that detects gas leakage, and the degree of refrigerant leakage can be further determined through the gas concentration. Furthermore, the leakage point can be repaired faster and more accurately, improving the repair efficiency and further reducing the risk of the sample being damaged due to temperature influence.

[0085] In the process of using technical solutions to solve the above - mentioned technical problems, there is often another Technical Problem 3: When repairing the refrigerated storage device, it is often necessary to shut down the refrigerated storage device. When the repair time is long, the temperature in the refrigerated storage device changes, resulting in damage to the sample. For the above - mentioned Technical Problem 3, the conventional solution is generally: The staff takes out the sample and places it in another refrigerated storage device. However, the above - mentioned conventional solution still has the following problems: The storage temperature of the sample is often relatively low, and the body temperature of the staff may affect the sample, resulting in damage to the sample.

[0086] Considering the problems of the above-mentioned conventional solutions, in the face of the above technical problem 3: when repairing a refrigerated storage device, it is often necessary to shut down the refrigerated storage device. When the repair time is long, the temperature inside the refrigerated storage device changes, resulting in damage to the samples. Combining the technical status quo, the following solutions can be decided upon:

[0087] Optionally, the above self-checking refrigerated storage device may further include a transportation module and a spare low-temperature storage module. The above transportation module may include a mobile electric cylinder, a negative pressure adsorption power component, a rotating sample carrier, and at least one group of moving rods. The above mobile electric cylinder may be used to drive the above rotating sample carrier to move on the above at least one group of moving rods. The above negative pressure adsorption power component may be used to adsorb the sample into the above rotating sample carrier. The above rotating sample carrier may include at least one sample carrier hole. Each of the at least one sample carrier holes may be evenly distributed around the above rotating sample carrier. The above at least one group of moving rods may include a moving rod above the above low-temperature storage module and a moving rod above the above spare low-temperature storage module. In the working state, the above transportation module may move above the above low-temperature storage module and above the above spare low-temperature storage module. The above spare low-temperature storage module may include a spare refrigeration compression mechanism, a spare storage tube, and a spare refrigeration pipeline. The above spare refrigeration compression mechanism, the above spare storage tube, and the above spare refrigeration pipeline may be the same as the refrigeration compression mechanism, the storage tube, and the refrigeration pipeline included in the above low-temperature storage module. The above transportation module and the above low-temperature storage may be communicatively connected to the above information processing module.

[0088] Optionally, the above information processing module may further be used to perform the following steps:

[0089] In the first step, in response to determining that the upper refrigeration compression mechanism fails, obtain the set low-temperature storage temperature corresponding to the above low-temperature storage module. In practice, the above information processing module may obtain the set low-temperature storage temperature corresponding to the above low-temperature storage module from the storage module. The above storage module may be a memory associated with the above processing module. The set low-temperature storage temperature of the low-temperature storage module may be stored in the above storage module.

[0090] In the second step, according to the above set low-temperature storage temperature, adjust the temperature of the above spare refrigeration compression mechanism. In practice, the above information processing module may adjust the refrigeration temperature corresponding to the above spare refrigeration compression mechanism to the above set low-temperature storage temperature. As an example, the above information processing module may adjust the refrigeration temperature corresponding to the above spare refrigeration compression mechanism to the above set low-temperature storage temperature by adjusting the cylinder volume of the compressor.

[0091] Step 3: Generate sample transportation path information according to the pre-stored sample position information. Among them, the above-mentioned pre-stored sample position information may be the coordinates of each storage tube storing samples in the above-mentioned low-temperature storage module stored in the above-mentioned storage module. The above-mentioned sample transportation path information may be a coordinate sequence for the rotation sample carrier in the above-mentioned transportation module to move. In practice, first, the above-mentioned information processing module may determine the movement coordinate sequence between each coordinate in the above-mentioned pre-stored sample position information and the position coordinates of the corresponding storage tube in the above-mentioned standby refrigeration compressor mechanism as a single-sample transportation path. Then, the above-mentioned information processing module may merge each single-sample transportation path to obtain the sample transportation path information.

[0092] Step 4: Control the above-mentioned transportation module to perform sample transportation operations according to the above-mentioned sample transportation path information. In practice, the above-mentioned information processing module may control the rotation sample carrier in the above-mentioned transportation module to move according to the coordinate sequence in the above-mentioned sample transportation path information.

[0093] The above content related to transportation is an inventive point of an embodiment of the present disclosure, which solves Technical Problem 3: "When repairing a refrigeration storage device, it is often necessary to shut down the refrigeration storage device. When the repair time is long, the temperature in the refrigeration storage device changes, resulting in sample damage." The reasons for sample damage are as follows: When repairing a refrigeration storage device, it is often necessary to shut down the refrigeration storage device. When the repair 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. To achieve this effect, the self-checking refrigeration storage device of the present disclosure further includes a transportation module and a standby low-temperature storage module. The transportation module is used to transport samples between the low-temperature storage module and the standby low-temperature storage module. The standby low-temperature storage module is used to temporarily store samples 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 standby low-temperature storage module can be adjusted so that the storage temperature of the standby low-temperature storage module is more suitable for the samples, reducing the influence of temperature changes on the samples. And through transportation by the transportation module, there is no contact with the human body, avoiding the influence of human body temperature on the samples, thereby further reducing the risk of sample damage.

[0094] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. 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 the specific combination of the above technical features, but also should 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 technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A self-checking refrigerated storage device, characterized in that, It includes an information processing module and a cryogenic storage module. Among them, the cryogenic 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 communicated with the inlet of the condenser, the outlet of the condenser is communicated with the inlet of the evaporator through the expansion valve, the outlet of the evaporator is communicated with the suction port of the compressor through a return air pipe, the centrifugal fan is arranged on the side of the fins of the evaporator, and the centrifugal fan is communicated with the refrigeration pipeline. The refrigeration pipeline is used to transmit the cold air prepared by the refrigeration compression mechanism to the periphery of the storage tube; the detection mechanism includes a vibration sensor, a compressor current sensor and a temperature sensor module. The vibration sensor is installed on the outer shell of the compressor, the compressor current sensor is installed on the power input end of the compressor, and the temperature sensor module includes a compressor temperature sensor. The compressor temperature sensor is installed on the shell of the compressor; the information processing module is communicatively connected to 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 fault cause information according to the vibration information, compressor current information and compressor temperature information; the information processing module is further used to perform the following steps: generate compressor vibration characteristic information according to the vibration information, where 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, where the compressor current characteristic information is effective value fluctuation increase information, current sudden rise and shutdown information or normal fluctuation information; generate compressor temperature characteristic information according to the compressor temperature information, where 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, generate 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, generate 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 sudden rise and shutdown information, and the compressor temperature characteristic information is temperature decrease information, generate liquid refrigerant reflux 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, generate lubrication fault information according to the compressor temperature characteristic information; Determine the bearing wear fault information, the rotor fault information, the liquid refrigerant reflux fault information or the lubrication fault information as the compressor fault cause information.

2. The self-checking refrigerated storage device according to claim 1, wherein The detection mechanism further includes an infrared thermal imager, a dust sensor and a pressure sensor module; The pressure sensor module further 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.

3. The self-checking refrigerated storage device according to claim 2, wherein, 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.

4. The self-checking refrigerated storage device according to claim 3, characterized in that, The information processing module is further configured to perform the following steps: Receive the condenser infrared thermal image information sent by the infrared thermal imager; Generate condenser temperature information according to the condenser infrared thermal image information; Receive 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, generate condenser clogging 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, generate condenser fan fault information according to the condenser temperature information and the condenser outlet pressure information; Send the condenser clogging degree information or the condenser fan fault information to the associated intelligent device.

5. The self-checking refrigerated storage device according to claim 4, characterized in that, The information processing module is further configured to perform the following steps: Receive the 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, generate refrigerant excess information according to the condenser temperature information and the condenser outlet temperature information; Send the condenser clogging degree information or the condenser fan fault information to the intelligent device.

6. The self-checking refrigerated storage device according to claim 1, characterized in that, The detection mechanism further includes a differential pressure sensor module, the differential pressure 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.

7. The self-checking refrigerated storage device according to claim 6, characterized in that The information processing module is further configured to perform the following steps: 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; Determine the absolute value of the difference between the pre-valve pressure information and the post-valve pressure information as the expansion valve differential pressure; Generate expansion valve differential pressure characteristic information according to the expansion valve differential pressure, wherein the expansion valve differential pressure characteristic information is a primary differential pressure, a secondary differential pressure or a tertiary differential pressure, and the primary differential pressure is greater than the secondary differential pressure is greater than the rated differential pressure is greater than the tertiary differential pressure; 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; Determine the difference between the pre-valve temperature information and the post-valve temperature information 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 post-valve temperature decrease information or post-valve temperature increase information; In response to determining that the expansion valve differential pressure characteristic information is the primary differential pressure and the expansion valve temperature difference characteristic information is the post-valve temperature decrease information, generate expansion valve blockage fault information according to the expansion valve differential pressure and the expansion valve temperature difference; In response to determining that the expansion valve differential pressure characteristic information is the secondary differential pressure and the expansion valve temperature difference characteristic information is the post-valve temperature decrease information, generate expansion valve opening enlargement information according to the expansion valve differential pressure and the expansion valve temperature difference; In response to determining that the expansion valve differential pressure characteristic information is the tertiary differential pressure and the expansion valve temperature difference characteristic information is the post-valve temperature increase information, generate expansion valve opening reduction information according to the expansion valve differential pressure and the expansion valve temperature difference.

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