A control method for automatically detecting a fault of a refrigeration system of a medical refrigerator and a storage medium

Abstract

This invention provides a control method and storage medium for automatically detecting faults in the refrigeration system of a medical refrigerator. The method includes: setting normal temperature and pressure data inside the medical refrigerator; acquiring the temperature and pressure data inside the medical refrigerator in real time; comparing the real-time acquired temperature and pressure data with the set normal temperature and pressure data; if the temperature exceeds the set range or the deviation exceeds the set value, a fault is considered to exist; if a fault is detected, the main controller issues an alarm via sound, light, and display screen to alert the user; the above process is repeated to ensure normal operation of the medical refrigerator and real-time detection of any faults. This invention utilizes signals transmitted by various sensors through the controller to determine the possible causes of faults, and can transmit the possible causes of refrigerator malfunctions to the user for convenient further maintenance.

Description

Technical Field

[0001] This invention relates to the field of fault detection technology for low-temperature freezers, and more particularly to a control method and storage medium for automatically detecting faults in the refrigeration system of a medical refrigerator. Background Technology

[0002] Refrigerators are widely used across various industries, with the medical field particularly demanding high performance specifications. However, regardless of whether it's a commercial or household refrigerator, malfunctions can affect stored items. For example, medical refrigerators store critical items such as vaccines, reagents, and experimental samples; damage to these items can significantly impact research projects. Previously, refrigerator malfunctions often occurred without the user's knowledge, resulting in the loss of many stored samples. Even if the user discovered the malfunction, the samples needed to be moved promptly, otherwise, they would still be damaged. However, if we could promptly report refrigerator refrigeration system malfunctions to the user, the extent of sample damage would be greatly reduced, and repair personnel would save considerable time.

[0003] In existing technology, faults in the electronic control system of a refrigerator can be diagnosed based on the indicator lights and operating status of various electrical components, and are controllable externally. However, when the refrigeration system malfunctions, repair personnel need to spend considerable time inspecting the operating status of each refrigeration component and the system, especially since components inside the foam layer of the cabinet cannot be inspected. Common faults include compressor failure and refrigerant leakage. Compressor failure requires using a multimeter to check the compressor current and resistance, while refrigerant leakage requires using foam water to inspect various parts. However, troubleshooting usually requires addressing each fault individually, which is time-consuming and labor-intensive. Generally, refrigerator malfunctions are mainly caused by two reasons: faulty electronic control system and faulty refrigeration system. While faults in the electronic control system can be diagnosed based on the indicator lights and operating status of various electrical components, and are controllable externally, faults in the refrigeration system require considerable time to inspect the operating status of each refrigeration component and the system, especially since components inside the foam layer of the cabinet cannot be inspected. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a control method and storage medium for automatically detecting faults in the refrigeration system of a medical refrigerator. Through a controller, sensors in various components, and an external communication system, when the refrigerator's refrigeration performance fails, the controller uses signals transmitted from the sensors to determine the possible causes of the fault. This information can then be transmitted to the user to facilitate further repairs.

[0005] The technical means employed in this invention are as follows:

[0006] A control method for automatically detecting faults in the refrigeration system of a medical refrigerator, comprising:

[0007] Set the normal temperature and normal pressure data inside the medical refrigerator;

[0008] Real-time acquisition of temperature and pressure data inside the medical refrigerator;

[0009] The real-time temperature and pressure data inside the medical refrigerator are compared with the set normal temperature and pressure data inside the medical refrigerator. If the temperature exceeds the set range or the deviation exceeds the set value, a fault is considered to exist.

[0010] If a fault is detected, the main controller will issue an alarm through sound, light, and display to alert the user to the fault.

[0011] Repeat the above process to ensure the medical refrigerator is operating normally and to detect any malfunctions in real time.

[0012] Furthermore, the setting of normal temperature and normal pressure data inside the medical refrigerator includes:

[0013] Set control temperature T 10 Measured internal temperature (T) of medical refrigerator 30 Evaporator outlet temperature T e0 Condenser temperature T C0 Ambient temperature T 20 Condenser outlet pressure value P C0 Evaporator outlet pressure value P e0 ,in:

[0014] The control temperature T 10 The operating temperature can be adjusted between 2 and 8℃ for the refrigerator and between -10 and -40℃ for the freezer.

[0015] The measured internal temperature T of the medical refrigerator 30 Evaporator outlet temperature T e0 Ambient temperature T 20 To monitor the temperature in real time; the measured internal temperature T of the medical refrigerator. 30 The range is within the control temperature T 10 Within ±10℃;

[0016] The condenser temperature T C0 ≤55℃;

[0017] The condenser outlet pressure value P C0 Maximum <2Mpa;

[0018] evaporator outlet pressure value P e0 The range is 0 < P e<0.5.

[0019] Furthermore, the real-time acquisition of temperature and pressure data inside the medical refrigerator includes:

[0020] Sensors are connected to the main controller, which controls the sensors to read real-time temperature and pressure data inside the medical refrigerator, including: the measured internal temperature T of the medical refrigerator. 30 Evaporator outlet temperature T e0 Real-time condenser temperature T C Real-time ambient temperature T 20 Real-time condenser outlet pressure value P C Real-time evaporator outlet pressure value P e .

[0021] Furthermore, the real-time acquired temperature and pressure data inside the medical refrigerator are compared with the preset normal temperature and pressure data inside the medical refrigerator. If the temperature exceeds the preset range or the deviation exceeds the preset value, a fault is considered to exist, including:

[0022] The sensors will read the temperature and pressure data inside the medical refrigerator in real time and send them to the main controller;

[0023] Based on the preset normal temperature and pressure data inside the medical refrigerator and by reading the temperature and pressure data inside the medical refrigerator in real time, the main controller performs fault detection according to the alarm strategy.

[0024] Furthermore, the main controller performs fault detection according to the alarm policy, specifically including:

[0025] If the actual measured temperature inside the medical refrigerator is T 30 Greater than the control temperature T 10 If the temperature is within ±10℃, it indicates a fault and triggers an alarm.

[0026] If the actual temperature T is measured inside the medical refrigerator 30 Greater than the control temperature T 10 Based on a range of ±10℃, the real-time condenser temperature T C Above 55℃, real-time condenser outlet pressure value P C If the pressure is greater than 2 MPa, it is determined that the condenser is dirty and clogged, resulting in poor heat dissipation, or that the ambient temperature is abnormal, or that there is a leak in the system.

[0027] Then observe the real-time ambient temperature T 20 and real-time evaporator outlet temperature T e0 Is it normal, and what is the real-time evaporator outlet pressure value P? e The evaporator outlet pressure value P is not mentioned. e0 Within a certain range, the specific cause of the fault can be determined.

[0028] Furthermore, upon detecting a fault, the main controller will issue an alarm via sound, light, or display to alert the user that a fault exists. The alarm method can be set according to the user's needs.

[0029] Furthermore, the control method further includes:

[0030] The main controller records the time and details of detected faults and alarms in real time. The recorded data is used for future reference, helping users understand the operation of the medical refrigerator and perform real-time maintenance and upkeep.

[0031] The present invention also provides a computer-readable storage medium storing a computer instruction set; when the computer instruction set is executed by a processor, it implements the control method for automatically detecting faults in the refrigeration system of a medical refrigerator as described above.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. The control method for automatically detecting refrigeration system faults in medical refrigerators provided by this invention can automatically detect refrigeration system faults in medical refrigerators and issue alarms in a timely manner, thereby improving the operational safety and reliability of medical refrigerators.

[0034] 2. The control method for automatically detecting faults in the refrigeration system of a medical refrigerator provided by this invention allows the main controller to make corresponding judgments based on different models, avoiding misjudgments and improving the accuracy of detection. At the same time, the main controller can also record data to help users better understand the operation of the medical refrigerator and provide a reference for subsequent maintenance and upkeep.

[0035] Based on the above reasons, this invention can be widely applied in fields such as fault detection of low-temperature freezers. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0045] like Figure 1 As shown, the present invention provides a control method for automatically detecting faults in the refrigeration system of a medical refrigerator, comprising:

[0046] S1. Set the normal temperature and normal pressure data inside the medical refrigerator;

[0047] S2. Real-time acquisition of temperature and pressure data inside the medical refrigerator;

[0048] S3. Compare the real-time temperature and pressure data inside the medical refrigerator with the set normal temperature and pressure data inside the medical refrigerator. If the temperature exceeds the set range or the deviation exceeds the set value, it is considered that there is a fault.

[0049] S4. If a fault is detected, the main controller will issue an alarm through sound, light, and display to remind the user of the fault.

[0050] S5. Repeat steps S2 to S4 to ensure that the medical refrigerator operates normally and detects any faults in real time.

[0051] In a specific implementation, as a preferred embodiment of the present invention, step S1, setting the normal temperature and normal pressure data inside the medical refrigerator, includes:

[0052] Set control temperature T 10 Measured internal temperature (T) of medical refrigerator 30 Evaporator outlet temperature Te0 Condenser temperature T C0 Ambient temperature T 20 Condenser outlet pressure value P C0 Evaporator outlet pressure value P e0 ,in:

[0053] The control temperature T 10 The operating temperature can be adjusted between 2 and 8℃ for the refrigerator and between -10 and -40℃ for the freezer.

[0054] The measured internal temperature T of the medical refrigerator 30 Evaporator outlet temperature T e0 Ambient temperature T 20 To monitor the temperature in real time; the measured internal temperature T of the medical refrigerator. 30 The range is within the control temperature T 10 Within ±10℃;

[0055] The condenser temperature T C0 ≤55℃;

[0056] The condenser outlet pressure value P C0 Maximum <2Mpa;

[0057] evaporator outlet pressure value P e0 The range is 0 < P e <0.5.

[0058] In a specific implementation, as a preferred embodiment of the present invention, step S2, which involves real-time acquisition of temperature and pressure data inside the medical refrigerator, includes:

[0059] Sensors are connected to the main controller, which controls the sensors to read real-time temperature and pressure data inside the medical refrigerator, including: the measured internal temperature T of the medical refrigerator. 30 Evaporator outlet temperature T e0 Real-time condenser temperature T C Real-time ambient temperature T 20 Real-time condenser outlet pressure value P C Real-time evaporator outlet pressure value P e .

[0060] In a specific implementation, as a preferred embodiment of the present invention, in step S3, the real-time acquired temperature and pressure data inside the medical refrigerator are compared with the set normal temperature and pressure data inside the medical refrigerator. If the temperature exceeds the set range or the deviation exceeds the set value, a fault is considered to exist, including:

[0061] The sensors will read the temperature and pressure data inside the medical refrigerator in real time and send them to the main controller;

[0062] Based on the preset normal temperature and pressure data inside the medical refrigerator and by reading the temperature and pressure data inside the medical refrigerator in real time, the main controller performs fault detection according to the alarm strategy.

[0063] In a specific implementation, as a preferred embodiment of the present invention, the main controller performs fault detection according to an alarm strategy, specifically including:

[0064] If the actual measured temperature inside the medical refrigerator is T 30 Greater than the control temperature T 10 If the temperature is within ±10℃, it indicates a fault and triggers an alarm.

[0065] If the actual temperature T is measured inside the medical refrigerator 30 Greater than the control temperature T 10 Based on a range of ±10℃, the real-time condenser temperature T C Above 55℃, real-time condenser outlet pressure value P C If the pressure is greater than 2 MPa, it is determined that the condenser is dirty and clogged, resulting in poor heat dissipation, or that the ambient temperature is abnormal, or that there is a leak in the system.

[0066] Then observe the real-time ambient temperature T 20 and real-time evaporator outlet temperature T e0 Is it normal, and what is the real-time evaporator outlet pressure value P? e The evaporator outlet pressure value P is not mentioned. e0 Within a certain range, the specific cause of the fault can be determined.

[0067] In a specific implementation, as a preferred embodiment of the present invention, in step S4, when a fault is detected, the main controller will issue an alarm through sound, light, and display screen to remind the user that a fault exists. The alarm method can be set according to the user's needs.

[0068] In a specific implementation, as a preferred embodiment of the present invention, the control method further includes:

[0069] The main controller records the time and details of detected faults and alarms in real time. The recorded data is used for future reference, helping users understand the operation of the medical refrigerator and perform real-time maintenance and upkeep.

[0070] This application also discloses a computer-readable storage medium storing a computer instruction set, which, when executed by a processor, implements the control method for automatically detecting faults in the refrigeration system of a medical refrigerator as provided in any of the above embodiments.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0072] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0073] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0074] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. Various media capable of storing program code, such as random access memory (RAM), external hard disk, magnetic disk, or optical disk, are suitable for this purpose.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for automatically detecting faults in the refrigeration system of a medical refrigerator, characterized in that, include: Set the normal temperature and normal pressure data inside the medical refrigerator, including: Set control temperature T 10 Measured internal temperature (T) of medical refrigerator 30 Evaporator outlet temperature T e0 Condenser temperature T C0 Ambient temperature T 20 Condenser outlet pressure value P C0 Evaporator outlet pressure value P e0 ,in: The controlled temperature T 10 The operating temperature can be adjusted between 2 and 8℃ for the refrigerator and between -10 and -40℃ for the freezer. The measured internal temperature T of the medical refrigerator 30 Evaporator outlet temperature T e0 Ambient temperature T 20 To monitor the temperature in real time; the measured internal temperature T of the medical refrigerator. 30 The range is within the control temperature T 10 Within ±10℃; The condenser temperature T C0 ≤55℃; The condenser outlet pressure value P C0 Maximum <2Mpa; Evaporator outlet pressure value P e0 The range is 0 < P e <0.5; Real-time acquisition of temperature and pressure data inside the medical refrigerator; The real-time temperature and pressure data inside the medical refrigerator are compared with the preset normal temperature and pressure data inside the medical refrigerator. If the temperature exceeds the set range or the deviation exceeds the set value, a malfunction is considered to exist, including: The sensors will read the temperature and pressure data inside the medical refrigerator in real time and send them to the main controller; Based on the pre-defined normal temperature and pressure data inside the medical refrigerator, and by reading the temperature and pressure data inside the medical refrigerator in real time, the main controller performs fault detection according to the alarm strategy, specifically including: If the actual measured temperature inside the medical refrigerator is T 30 Greater than the control temperature T 10 If the temperature is within ±10℃, it indicates a fault and triggers an alarm. If the actual temperature T is measured inside the medical refrigerator 30 Greater than the control temperature T 10 Based on a range of ±10℃, the real-time condenser temperature T C Above 55℃, real-time condenser outlet pressure value P C If the pressure is greater than 2 MPa, it is determined that the condenser is dirty and clogged, resulting in poor heat dissipation, or that the ambient temperature is abnormal, or that there is a leak in the system. Then observe the real-time ambient temperature T 20 and real-time evaporator outlet temperature T e0 Is it normal, and what is the real-time evaporator outlet pressure value P? e The evaporator outlet pressure value P is not mentioned. e0 Within a certain range, determine the specific cause of the fault; If a fault is detected, the main controller will issue an alarm through sound, light, and display to alert the user to the fault. Repeat the above process to ensure the medical refrigerator is operating normally and to detect any malfunctions in real time.

2. The control method for automatically detecting faults in the refrigeration system of a medical refrigerator according to claim 1, characterized in that, The real-time acquisition of temperature and pressure data inside the medical refrigerator includes: Sensors are connected to the main controller, which controls the sensors to read real-time temperature and pressure data inside the medical refrigerator, including: the measured internal temperature T of the medical refrigerator. 30 Evaporator outlet temperature T e0 Real-time condenser temperature T C Real-time ambient temperature T 20 Real-time condenser outlet pressure value P C Real-time evaporator outlet pressure value P e .

3. The control method for automatically detecting faults in the refrigeration system of a medical refrigerator according to claim 1, characterized in that, Upon detecting a fault, the main controller will issue an alarm via sound, light, and display to alert the user that a fault exists. The alarm method can be set according to the user's needs.

4. The control method for automatically detecting faults in the refrigeration system of a medical refrigerator according to claim 1, characterized in that, The control method further includes: The main controller records the time and details of detected faults and alarms in real time. The recorded data is used for future reference to help users understand the operation of the medical refrigerator and perform real-time maintenance and upkeep.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a set of computer instructions; when the computer instructions are executed by a processor, they implement the control method for automatically detecting faults in the refrigeration system of a medical refrigerator as described in any one of claims 1-4.

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