Method, device and centrifuge for controlling a centrifuge, storage medium

Abstract

The application relates to the technical field of centrifugal equipment, and discloses a method for controlling a centrifuge, the centrifuge comprising a centrifugal cavity, a rotor arranged in the centrifugal cavity, and a refrigeration system for regulating the temperature in the centrifugal cavity, wherein the refrigeration system comprises a refrigerant circulation loop and a bypass pipeline, the refrigerant circulation loop comprises a compressor and an evaporator, the first end of the bypass pipeline is communicated with the exhaust pipeline of the compressor, the second end of the bypass pipeline is communicated with the inlet pipeline of the evaporator, and a bypass valve is arranged on the bypass pipeline; the method comprises the following steps: determining a target temperature in the centrifugal cavity and a target rotating speed of the rotor; determining an initial opening degree of the bypass valve according to the target temperature and the target rotating speed; and adjusting the opening degree of the bypass valve to the initial opening degree. The application can reduce the temperature fluctuation in the centrifugal cavity, so as to realize fine control of the temperature in the centrifugal cavity. The application also discloses a device for controlling the centrifuge, a centrifuge and a storage medium.

Description

Technical Field

[0001] This application relates to the field of centrifugation equipment technology, such as a method, apparatus, centrifuge, and storage medium for controlling a centrifuge. Background Technology

[0002] Currently, centrifuges are generally used in biological or medical laboratories to separate liquids from solid particles or liquid-liquid mixtures in samples. Sample separation needs to be carried out within a suitable temperature range, but during actual centrifugation, the rotating rotor rubs against the air and generates additional heat, causing temperature fluctuations within the centrifuge chamber. If the temperature fluctuations are large, it may damage the samples and negatively impact the centrifugation results.

[0003] Related technologies propose a control method for centrifuges, which selectively activates or deactivates a solenoid valve based on the current temperature and target temperature within the centrifuge chamber to control the temperature inside the centrifuge chamber.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] To ensure that the actual temperature inside the centrifuge chamber does not deviate from the target temperature, the opening and closing states of the solenoid valve need to be frequently changed, which can easily cause the temperature inside the centrifuge chamber to fluctuate within a small range.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a method, apparatus, centrifuge, and storage medium for controlling a centrifuge, which can reduce temperature fluctuations within the centrifuge chamber to achieve precise temperature control within the centrifuge chamber.

[0009] In some embodiments, the centrifuge includes a centrifuge chamber; a rotor disposed within the centrifuge chamber; and a refrigeration system for regulating the temperature within the centrifuge chamber, including a refrigerant circulation loop and a bypass line, wherein the refrigerant circulation loop includes a compressor and an evaporator, a first end of the bypass line is connected to the compressor's exhaust line, a second end of the bypass line is connected to the evaporator's inlet line, and a bypass valve is provided on the bypass line; the method includes: determining a target temperature within the centrifuge chamber and a target rotational speed of the rotor; determining an initial opening degree of the bypass valve based on the target temperature and target rotational speed; and adjusting the opening degree of the bypass valve to the initial opening degree.

[0010] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the method for controlling a centrifuge as described above when the program instructions are executed.

[0011] In some embodiments, the centrifuge includes: a centrifuge chamber; a rotor disposed within the centrifuge chamber; a refrigeration system for regulating the temperature within the centrifuge chamber, including a refrigerant circulation loop and a bypass line, wherein the refrigerant circulation loop includes a compressor and an evaporator, a first end of the bypass line is connected to the compressor's exhaust line, a second end of the bypass line is connected to the evaporator's inlet line, and a bypass valve is provided on the bypass line; the aforementioned device for controlling the centrifuge is electrically connected to the bypass valve.

[0012] In some embodiments, the storage medium stores program instructions that, when executed, perform the methods described above for controlling a centrifuge.

[0013] The method, apparatus, centrifuge, and storage medium for controlling a centrifuge provided in this disclosure can achieve the following technical effects:

[0014] This embodiment of the invention can determine the target temperature and target rotor speed within the centrifuge chamber to create a suitable environment for sample centrifugation. Then, this embodiment can control the operation of the refrigeration system to achieve temperature control within the centrifuge chamber. The refrigeration system also includes a bypass pipe and a corresponding bypass valve. By opening the bypass valve to open the bypass pipe, this embodiment allows the high-temperature gaseous refrigerant discharged from the compressor to be directly delivered to the evaporator, thereby heating the evaporator and causing the temperature within the centrifuge chamber to rise. Furthermore, this embodiment also considers the heat generated by rotor friction against air and optimizes the opening state of the bypass valve based on the target temperature and target speed to obtain a suitable initial opening. By adjusting the opening of the bypass valve to the initial opening, this embodiment can reasonably set the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipe while fully utilizing the heat generated during rotor rotation, to more accurately regulate the heating amount of the evaporator. Therefore, this embodiment can reduce temperature fluctuations within the centrifuge chamber, achieving precise temperature control within the centrifuge chamber.

[0015] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0017] Figure 1 This is a schematic diagram of a centrifuge refrigeration system provided in an embodiment of this disclosure;

[0018] Figure 2 This is a schematic diagram of a method for controlling a centrifuge provided in an embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of another method for controlling a centrifuge provided in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of another method for controlling a centrifuge provided in an embodiment of this disclosure;

[0021] Figure 5 This is a schematic diagram of an apparatus for controlling a centrifuge provided in an embodiment of this disclosure;

[0022] Figure 6 This is a schematic diagram of a centrifuge provided in an embodiment of this disclosure.

[0023] Figure label:

[0024] 100: Refrigerant circulation loop; 200: Bypass line; 10: Compressor; 20: Condenser; 30: Expansion valve; 40: Evaporator; 50: Bypass valve. Detailed Implementation

[0025] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0027] Unless otherwise stated, the term "multiple" means two or more.

[0028] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0029] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0030] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0031] Currently, centrifuges are generally used in biological or medical laboratories to separate liquids from solid particles or liquid-liquid mixtures in samples. Sample separation needs to be carried out within a suitable temperature range, but during actual centrifugation, the rotating rotor rubs against the air and generates additional heat, causing temperature fluctuations within the centrifuge chamber. If the temperature fluctuations are large, it may damage the samples and negatively impact the centrifugation results.

[0032] Related technologies propose a control method for centrifuges, which selectively activates or deactivates a solenoid valve based on the current temperature and target temperature within the centrifuge chamber to control the temperature inside the centrifuge chamber.

[0033] However, in order to ensure that the actual temperature inside the centrifuge chamber does not deviate from the target temperature, it is necessary to frequently change the opening and closing state of the solenoid valve, which can easily cause the temperature inside the centrifuge chamber to fluctuate within a small range.

[0034] In this embodiment, the centrifuge includes a centrifuge chamber, a rotor, and a refrigeration system. The rotor is disposed within the centrifuge chamber. The refrigeration system is used to regulate the temperature within the centrifuge chamber.

[0035] Combination Figure 1As shown, this embodiment of the present disclosure provides a refrigeration system for a centrifuge, including a refrigerant circulation loop 100 and a bypass pipe 200. The refrigerant circulation loop 100 includes a compressor 10 and an evaporator 40. A first end of the bypass pipe 200 is connected to the discharge pipe of the compressor 10, and a second end of the bypass pipe 200 is connected to the inlet pipe of the evaporator 40. A bypass valve 50 is provided on the bypass pipe 200.

[0036] The centrifuge refrigeration system provided in this embodiment allows for temperature control within the centrifuge chamber by controlling its operation. The refrigeration system also includes a bypass pipe 200 and a corresponding bypass valve 50. By opening the bypass valve 50 to connect the bypass pipe 200, this embodiment allows the high-temperature gaseous refrigerant discharged from the compressor 10 to be directly delivered to the evaporator 40, thereby heating the evaporator 40 and raising the temperature within the centrifuge chamber. Furthermore, this embodiment considers the heat generated by rotor friction with air and optimizes the opening state of the bypass valve 50 based on the target temperature and target rotation speed to obtain a suitable initial opening. By adjusting the opening of the bypass valve 50 to the initial opening, this embodiment, while fully utilizing the heat generated during rotor rotation, can rationally set the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipe 200 to more accurately regulate the heating of the evaporator 40. Therefore, this embodiment can reduce temperature fluctuations within the centrifuge chamber, achieving precise temperature control within the centrifuge chamber.

[0037] Specifically, the refrigerant circulation loop 100 also includes a condenser 20 and a throttle valve 30. The compressor 10, condenser 20, throttle valve 30, and evaporator 40 are connected in sequence via refrigerant piping. In this way, the embodiments of this disclosure can form a refrigerant circulation loop 100 to enable continuous heat exchange between the refrigerant and the air in the centrifuge chamber, thereby achieving precise temperature control within the centrifuge chamber.

[0038] Combination Figure 2 As shown, this disclosure provides a method for controlling a centrifuge, including:

[0039] S201, the processor determines the target temperature inside the centrifuge chamber and the target rotational speed of the rotor.

[0040] S202, the processor determines the initial opening of the bypass valve based on the target temperature and target speed.

[0041] S203, the processor adjusts the opening of the bypass valve to the initial opening.

[0042] The method for controlling a centrifuge provided in this disclosure can determine the target temperature within the centrifuge chamber and the target rotor speed to create a suitable environment for sample centrifugation. Then, this disclosure can control the operation of the refrigeration system to achieve temperature control within the centrifuge chamber. The refrigeration system also includes a bypass pipe and a corresponding bypass valve. By opening the bypass valve to open the bypass pipe, this disclosure allows the high-temperature gaseous refrigerant discharged from the compressor to be directly delivered to the evaporator, thereby heating the evaporator and causing the temperature within the centrifuge chamber to rise. Furthermore, this disclosure also considers the heat generated by rotor friction against air and optimizes the opening state of the bypass valve based on the target temperature and target speed to obtain a suitable initial opening. By adjusting the opening of the bypass valve to the initial opening, this disclosure, while fully utilizing the heat generated during rotor rotation, can rationally set the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipe to more accurately regulate the heating amount of the evaporator. Therefore, this disclosure can reduce temperature fluctuations within the centrifuge chamber, achieving precise temperature control within the centrifuge chamber.

[0043] Optionally, the processor determines the target temperature and target rotor speed within the centrifuge chamber, including: the processor determining the type of sample to be centrifuged; and the processor determining the corresponding target temperature and target rotor speed based on the type of sample to be centrifuged. Thus, before centrifugation is performed, this embodiment of the present disclosure can determine the appropriate target temperature and target rotor speed within the centrifuge chamber based on the type of sample to be centrifuged, thereby creating a suitable environment that meets the requirements of sample centrifugation and helping to ensure the centrifugation effect of the sample.

[0044] Optionally, combined Figure 3 As shown, the processor determines the initial opening of the bypass valve based on the target temperature and target speed, including:

[0045] S301, the processor determines the corresponding preset association relationship based on the speed gear corresponding to the target speed.

[0046] S302, the processor determines the initial opening degree of the bypass valve from the preset correlation relationship based on the temperature range corresponding to the target temperature.

[0047] Thus, this embodiment of the present disclosure can determine the heat generated during rotor rotation by combining the speed range corresponding to the target speed, and then construct a suitable preset correlation relationship, thereby taking into account the impact of heat generated by rotor friction against air on the temperature inside the centrifuge chamber. Furthermore, this embodiment of the present disclosure can determine the initial opening degree of the bypass valve within the aforementioned preset correlation relationship by combining the temperature range corresponding to the target temperature, thereby reasonably setting the flow rate of high-temperature gaseous refrigerant passing through the bypass pipeline to more accurately adjust the heating amount to the evaporator. Therefore, this embodiment of the present disclosure can reduce temperature fluctuations within the centrifuge chamber, achieving precise temperature control within the centrifuge chamber.

[0048] Optionally, the processor determines a corresponding preset association relationship based on the speed range corresponding to the target speed, including: when the target speed is at a low speed range, the processor determines the preset association relationship as a first association relationship; or, when the target speed is at a high speed range, the processor determines the preset association relationship as a second association relationship. Wherein, the initial opening degree of the bypass valve corresponding to the target temperature in the first association relationship is greater than the initial opening degree of the bypass valve corresponding to the second association relationship. In this way, the embodiments of this disclosure can combine the speed range corresponding to the target speed to determine the heat that can be generated during rotor rotation, and then construct a suitable preset association relationship. This allows for consideration of the impact of heat generated by rotor friction with air on the temperature inside the centrifuge chamber, thereby reducing temperature fluctuations inside the centrifuge chamber and facilitating precise temperature control within the centrifuge chamber.

[0049] Specifically, when the target speed is at a low speed setting, the heat generated during rotor rotation is less, and its impact on the temperature inside the centrifuge chamber is relatively small. Therefore, this embodiment establishes a first correlation to set a larger initial opening of the bypass valve, thereby reasonably increasing the flow rate of high-temperature gaseous refrigerant passing through the bypass pipeline to enhance the heating of the evaporator and facilitate a rapid temperature recovery inside the centrifuge chamber. Conversely, when the target speed is at a high speed setting, the heat generated during rotor rotation is greater, and its impact on the temperature inside the centrifuge chamber is more significant. Therefore, this embodiment establishes a second correlation to set a smaller initial opening of the bypass valve, thereby appropriately reducing the flow rate of high-temperature gaseous refrigerant passing through the bypass pipeline to decrease the heating of the evaporator. This also increases the amount of refrigerant entering the refrigerant circulation loop system for refrigeration, which is beneficial for a rapid temperature reduction inside the centrifuge chamber.

[0050] Optionally, the processor determines the speed range corresponding to the target speed in the following manner: the processor determines the rotor type; the processor determines the maximum speed of the rotor based on the rotor type; the processor determines the speed range corresponding to the target speed based on the ratio of the target speed to the maximum speed. In this way, embodiments of the present disclosure can distinguish rotor types and combine the target speed of the rotor with the maximum speed corresponding to each type of rotor to determine the actual speed range of the rotor during centrifugation, thereby facilitating a more accurate analysis of the heat generated during rotor rotation.

[0051] Optionally, the processor determines the maximum rotational speed of the rotor based on the rotor type, including: when the rotor type is a small rotor, the processor determines the maximum rotational speed as a first maximum rotational speed; or, when the rotor type is a medium rotor, the processor determines the maximum rotational speed as a second maximum rotational speed; or, when the rotor type is a large rotor, the processor determines the maximum rotational speed as a third maximum rotational speed. The first maximum rotational speed is greater than the second maximum rotational speed, and the second maximum rotational speed is greater than the third maximum rotational speed. Thus, the small rotor corresponds to a larger first maximum rotational speed, the large rotor corresponds to a smaller third maximum rotational speed, and the second maximum rotational speed of the medium rotor falls between the two. Therefore, this embodiment of the present disclosure can determine the corresponding maximum rotational speed based on the rotor type, thereby facilitating a more accurate assessment of the actual rotational speed range of the rotor during centrifugation.

[0052] Optionally, the first maximum speed can be set within the range of [15000 rpm, 18000 rpm]. Preferably, the first maximum speed is 15000 rpm. The first maximum speed can also be adjusted based on the specific configuration information of the centrifuge, and can be set to any other reasonable value such as 16000 rpm or 17000 rpm.

[0053] Optionally, the second maximum speed can be set within the range of [5000 rpm, 8000 rpm]. Preferably, the second maximum speed is 6000 rpm. The second maximum speed can also be adjusted based on the specific configuration of the centrifuge, and can be set to any other reasonable value such as 5500 rpm or 7000 rpm.

[0054] Optionally, the third maximum speed can be set within the range of [1000 rpm, 3000 rpm]. Preferably, the third maximum speed is 2000 rpm. The third maximum speed can also be adjusted based on the specific configuration of the centrifuge, and can be set to any other reasonable value such as 1500 rpm or 2500 rpm.

[0055] Optionally, the processor determines the speed range corresponding to the target speed based on the ratio of the target speed to the maximum speed, including: if the ratio is less than or equal to a preset ratio, the processor determines the target speed to be at a low speed range; or, if the ratio is greater than the preset ratio, the processor determines the target speed to be at a high speed range. Thus, when the ratio is less than or equal to the preset ratio, it indicates that the actual load on the rotor during centrifugation is low, and the rotor is at a low speed range. Furthermore, at a low speed range, the heat generated by friction between the rotor and the air is less, resulting in a smaller impact on the temperature inside the centrifuge chamber. Conversely, when the ratio is greater than the preset ratio, it indicates that the actual load on the rotor during centrifugation is higher, and the rotor is at a high speed range. At a high speed range, the heat generated by friction between the rotor and the air is greater, resulting in a larger impact on the temperature inside the centrifuge chamber.

[0056] Optionally, the preset ratio can be set to [20%, 80%]. Preferably, the preset ratio is 50%. The preset ratio can also be adjusted based on the specific configuration information of the centrifuge, or it can be set to any other reasonable value such as 40% or 60%.

[0057] Optionally, in the first correlation, the initial opening of the bypass valve is positively correlated with the target temperature inside the centrifuge chamber. That is, the higher the target temperature, the larger the initial opening of the bypass valve. Thus, for a higher target temperature inside the centrifuge chamber, the refrigeration system needs to appropriately reduce its cooling capacity. By setting a larger initial opening of the bypass valve, this embodiment of the present disclosure can reasonably increase the flow rate of high-temperature gaseous refrigerant passing through the bypass pipeline, thereby increasing the heating of the evaporator. Simultaneously, it can reduce the amount of refrigerant entering the refrigerant circulation loop, thereby reducing the cooling capacity of the refrigeration system, thus facilitating a rapid temperature recovery inside the centrifuge chamber.

[0058] Specifically, when the preset association relationship is a first association relationship, the processor determines the initial opening degree of the bypass valve from the preset association relationship based on the temperature range corresponding to the target temperature. This includes: when the target temperature is within the first temperature range, the processor determines the initial opening degree of the bypass valve as a first opening degree from the first association relationship; or, when the target temperature is within the second temperature range, the processor determines the initial opening degree of the bypass valve as a second opening degree from the first association relationship; or, when the target temperature is within the third temperature range, the processor determines the initial opening degree of the bypass valve as a third opening degree from the first association relationship; or, when the target temperature is within the fourth temperature range, the processor determines the initial opening degree of the bypass valve as a fourth opening degree from the first association relationship. Wherein, the first opening degree is less than the second opening degree, the second opening degree is less than the third opening degree, the third opening degree is less than the fourth opening degree, the upper limit of the first temperature range is equal to the lower limit of the second temperature range, the upper limit of the second temperature range is equal to the lower limit of the third temperature range, and the upper limit of the third temperature range is equal to the lower limit of the fourth temperature range.

[0059] Thus, in the first correlation, the target temperature and the initial opening of the bypass valve are positively correlated. Therefore, corresponding to a higher target temperature within the centrifuge chamber, the refrigeration system needs to appropriately reduce its cooling capacity. By setting a larger initial opening of the bypass valve, this embodiment of the present disclosure can reasonably increase the flow rate of high-temperature gaseous refrigerant through the bypass pipeline, thereby increasing the heating of the evaporator. Simultaneously, it can reduce the amount of refrigerant entering the refrigerant circulation loop, thereby reducing the cooling capacity of the refrigeration system, thus facilitating a rapid temperature recovery within the centrifuge chamber.

[0060] Optionally, in the second correlation, the initial opening of the bypass valve is positively correlated with the target temperature inside the centrifuge chamber. That is, the higher the target temperature, the larger the initial opening of the bypass valve. Thus, for a higher target temperature inside the centrifuge chamber, the refrigeration system needs to appropriately reduce its cooling capacity. By setting a larger initial opening of the bypass valve, this embodiment of the present disclosure can reasonably increase the flow rate of high-temperature gaseous refrigerant passing through the bypass pipeline, thereby increasing the heating of the evaporator. Simultaneously, it can reduce the amount of refrigerant entering the refrigerant circulation loop, thereby reducing the cooling capacity of the refrigeration system, and thus facilitating a rapid temperature recovery inside the centrifuge chamber.

[0061] Specifically, when the preset association relationship is the second association relationship, the processor determines the initial opening degree of the bypass valve from the preset association relationship based on the temperature range corresponding to the target temperature. This includes: when the target temperature is within the first temperature range, the processor determines the initial opening degree of the bypass valve to be the fifth opening degree from the second association relationship; or, when the target temperature is within the second temperature range, the processor determines the initial opening degree of the bypass valve to be the sixth opening degree from the second association relationship; or, when the target temperature is within the third temperature range, the processor determines the initial opening degree of the bypass valve to be the seventh opening degree from the second association relationship; or, when the target temperature is within the fourth temperature range, the processor determines the initial opening degree of the bypass valve to be the eighth opening degree from the second association relationship. Wherein, the fifth opening degree is less than the sixth opening degree, the sixth opening degree is less than the seventh opening degree, the seventh opening degree is less than the eighth opening degree, the upper limit of the first temperature range is equal to the lower limit of the second temperature range, the upper limit of the second temperature range is equal to the lower limit of the third temperature range, and the upper limit of the third temperature range is equal to the lower limit of the fourth temperature range.

[0062] Thus, in the second correlation, the target temperature and the initial opening of the bypass valve are positively correlated. Therefore, corresponding to a higher target temperature within the centrifuge chamber, the refrigeration system needs to appropriately reduce its cooling capacity. By setting a larger initial opening of the bypass valve, this embodiment of the present disclosure can reasonably increase the flow rate of high-temperature gaseous refrigerant through the bypass pipeline, thereby increasing the heating of the evaporator. Simultaneously, it can reduce the amount of refrigerant entering the refrigerant circulation loop, thereby reducing the cooling capacity of the refrigeration system, thus facilitating a rapid temperature recovery within the centrifuge chamber.

[0063] Optionally, the first, second, third, and fourth temperature ranges can be set according to the type of sample to be centrifuged. However, it must be ensured that the upper limit of the first temperature range equals the lower limit of the second temperature range, the upper limit of the second temperature range equals the lower limit of the third temperature range, and the upper limit of the third temperature range equals the lower limit of the fourth temperature range. Preferably, the first temperature range is (-∞, 5℃), the second temperature range is (5℃, 10℃), the third temperature range is (10℃, 15℃), and the fourth temperature range is (15℃, +∞). The above temperature ranges can also be adjusted according to the user's actual needs and set to any other reasonable range.

[0064] Optionally, the first, second, third, and fourth opening degrees can be set based on the operating parameters of the refrigeration system. However, it must be ensured that the first opening degree is less than the second opening degree, the second opening degree is less than the third opening degree, and the third opening degree is less than the fourth opening degree. Preferably, the first opening degree is 150 steps, the second opening degree is 250 steps, the third opening degree is 350 steps, and the fourth opening degree is 480 steps. The above opening degree values ​​can also be adjusted according to the user's actual needs and set to any other reasonable values.

[0065] Optionally, the fifth, sixth, seventh, and eighth opening degrees can be set according to the operating parameters of the refrigeration system. However, it must be ensured that the fifth opening degree is less than the sixth, the sixth is less than the seventh, and the seventh is less than the eighth. Preferably, the fifth opening degree is 100 steps, the sixth is 200 steps, the seventh is 300 steps, and the eighth is 420 steps. The above opening degree values ​​can also be adjusted according to the user's actual needs and set to any other reasonable values.

[0066] Combination Figure 4 As shown in the embodiments of this disclosure, another method for controlling a centrifuge is provided, including:

[0067] S401, the processor determines the target temperature inside the centrifuge chamber and the target rotational speed of the rotor.

[0068] S402, the processor determines the initial opening of the bypass valve based on the target temperature and target speed.

[0069] S403, the processor adjusts the opening of the bypass valve to the initial opening.

[0070] S404, the processor obtains the current temperature inside the centrifuge chamber.

[0071] S405, the processor adjusts the opening of the bypass valve based on the difference between the current temperature and the target temperature.

[0072] The method for controlling a centrifuge provided in this disclosure can determine the target temperature within the centrifuge chamber and the target rotor speed to create a suitable environment for sample centrifugation. Then, this disclosure can control the operation of the refrigeration system to achieve temperature control within the centrifuge chamber. The refrigeration system also includes a bypass pipe and a corresponding bypass valve. By opening the bypass valve to open the bypass pipe, this disclosure allows the high-temperature gaseous refrigerant discharged from the compressor to be directly delivered to the evaporator, thereby heating the evaporator and causing the temperature within the centrifuge chamber to rise. Furthermore, this disclosure also considers the heat generated by rotor friction against air and optimizes the opening state of the bypass valve based on the target temperature and target speed to obtain a suitable initial opening. By adjusting the opening of the bypass valve to the initial opening, this disclosure, while fully utilizing the heat generated during rotor rotation, can rationally set the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipe to more accurately regulate the heating amount of the evaporator. Therefore, this disclosure can reduce temperature fluctuations within the centrifuge chamber, achieving precise temperature control within the centrifuge chamber. Furthermore, during sample separation in the centrifuge, this embodiment also acquires the current temperature within the centrifuge chamber and calculates the difference between the current temperature and the target temperature, thereby determining whether the actual temperature within the centrifuge chamber is suitable. If the temperature fluctuation is large, this embodiment adjusts the opening of the bypass valve to regulate the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipeline, thereby adjusting the heating amount to the evaporator and the cooling capacity of the system. Thus, this embodiment achieves a balance between the cooling capacity of the refrigeration system, the heating amount to the evaporator, and the heat generated by rotor friction, ultimately allowing the actual temperature within the centrifuge chamber to gradually stabilize near the target temperature, which is beneficial for ensuring the centrifugation effect of the samples.

[0073] Optionally, the processor acquires the current temperature inside the centrifuge chamber by periodically acquiring the current temperature inside the centrifuge chamber at preset time intervals. Thus, this embodiment of the present disclosure can acquire the current temperature inside the centrifuge chamber at preset time intervals and periodically determine whether the current temperature inside the centrifuge chamber is suitable. Therefore, when the temperature is unsuitable, the opening of the bypass valve can be adjusted multiple times so that the actual temperature inside the centrifuge chamber eventually approaches the target temperature.

[0074] Optionally, the preset duration can be set in conjunction with the total sample centrifugation time to allow the actual temperature inside the centrifugation chamber to approach the target temperature more quickly. Preferably, the preset duration is 30 seconds. The preset duration can also be adjusted according to the user's actual needs, set to 20 seconds, 40 seconds, or any other reasonable value.

[0075] Optionally, the processor adjusts the opening of the bypass valve based on the difference between the current temperature and the target temperature, including: decreasing the opening of the bypass valve when the difference between the current temperature and the target temperature is greater than a first temperature difference; or increasing the opening of the bypass valve when the difference between the current temperature and the target temperature is less than a second temperature difference. The first temperature difference is greater than zero, and the second temperature difference is less than zero. Thus, when the difference between the current temperature and the target temperature is greater than the first temperature difference, it indicates that the actual temperature inside the centrifuge chamber is too high. Therefore, in this embodiment, decreasing the opening of the bypass valve appropriately reduces the flow rate of the high-temperature gaseous refrigerant in the bypass pipeline, thereby reducing the heating load on the evaporator. It also allows more refrigerant to enter the refrigerant circulation loop system to participate in refrigeration, which is beneficial for the temperature inside the centrifuge chamber to quickly drop to near the target temperature. Conversely, when the difference between the current temperature and the target temperature is less than the second temperature difference, it indicates that the actual temperature inside the centrifuge chamber is too low. Therefore, this embodiment increases the opening of the bypass valve to appropriately increase the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipeline, thereby increasing the heating amount to the evaporator. It also reduces the amount of refrigerant entering the refrigerant circulation loop, thus reducing the cooling capacity of the refrigeration system and facilitating a rapid temperature recovery within the centrifuge chamber to near the target temperature. Thus, this embodiment can determine whether the actual temperature within the centrifuge chamber is suitable based on the difference between the current temperature and the target temperature. If the temperature fluctuation is large, this embodiment adjusts the opening of the bypass valve to regulate the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipeline, thereby adjusting the heating amount to the evaporator and the cooling capacity of the system. Therefore, this embodiment achieves a balance between the cooling capacity of the refrigeration system, the heating amount to the evaporator, and the heat generated by rotor friction, ultimately allowing the actual temperature within the centrifuge chamber to gradually stabilize near the target temperature, which is beneficial for ensuring the centrifugation effect of the samples.

[0076] Optionally, the first temperature difference can be set according to the type of sample to be centrifuged to reduce temperature fluctuations within the centrifugation chamber, achieving precise temperature control and better ensuring the centrifugation effect. However, it must be ensured that the first temperature difference is greater than zero. Preferably, the first temperature difference is 1℃. The first temperature difference can also be adjusted according to the user's actual needs, set to 0.5℃ or 2℃, or any other reasonable value.

[0077] Optionally, the second temperature difference can be set according to the type of sample to be centrifuged to reduce temperature fluctuations within the centrifugation chamber, achieving precise temperature control and better ensuring the centrifugation effect. However, it must be ensured that the second temperature difference is less than zero. Preferably, the second temperature difference is -1℃. The second temperature difference can also be adjusted according to the user's actual needs, set to -0.5℃ or -2℃, or any other reasonable value.

[0078] Optionally, the processor reduces the opening of the bypass valve, including: the processor calculates Du1 = Di - Dp - Ds1 to obtain a first corrected opening Du1 after the bypass valve opening is reduced; the processor adjusts the opening of the bypass valve to the first corrected opening. Wherein, Di is the current opening of the bypass valve, Dp is the temperature compensation opening of the bypass valve, and Ds1 is the first speed compensation opening of the bypass valve. Thus, when the actual temperature inside the centrifuge chamber is too high, this embodiment of the present disclosure reduces the opening of the bypass valve to appropriately reduce the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipeline, thereby reducing the heating load on the evaporator. It also allows more refrigerant to enter the refrigerant circulation loop system to participate in refrigeration, which is beneficial for the temperature inside the centrifuge chamber to quickly drop to near the target temperature. Furthermore, the reduction in the bypass valve opening is related to the temperature inside the centrifuge chamber and the rotor speed. By determining appropriate temperature compensation opening and first speed compensation opening, this embodiment can more accurately control the bypass valve opening to decrease to an appropriate value, so that the actual temperature inside the centrifuge chamber can be reduced to the target temperature more quickly, which is beneficial to further reduce the temperature fluctuation inside the centrifuge chamber.

[0079] Optionally, the processor increases the opening of the bypass valve, including: the processor calculates Du2 = Di - Dp + Ds2 to obtain a second corrected opening Du2 after the bypass valve opening is increased; the processor adjusts the opening of the bypass valve to the second corrected opening. Wherein, Di is the current opening of the bypass valve, Dp is the temperature compensation opening of the bypass valve, and Ds2 is the second speed compensation opening of the bypass valve. Thus, when the actual temperature inside the centrifuge chamber is low, this embodiment increases the opening of the bypass valve to appropriately increase the flow rate of the high-temperature gaseous refrigerant passing through the bypass pipeline, thereby increasing the heating amount to the evaporator. It also reduces the amount of refrigerant entering the refrigerant circulation loop, thereby reducing the cooling capacity of the refrigeration system and facilitating a rapid temperature recovery inside the centrifuge chamber to near the target temperature. Furthermore, the increase in the bypass valve opening is related to the temperature inside the centrifuge chamber and the rotor speed. By determining an appropriate temperature compensation opening and a second speed compensation opening, the present invention can more accurately control the bypass valve opening to increase to an appropriate value, so that the actual temperature inside the centrifuge chamber can rise to the target temperature more quickly, which is beneficial to further reduce the temperature fluctuation inside the centrifuge chamber.

[0080] Optionally, the processor determines the temperature compensation opening degree Dp in the following manner: the processor calculates Dp = K * E to obtain the temperature compensation opening degree Dp. Wherein, K is a scaling factor, and K > 0, and E is the difference between the current temperature and the target temperature. Thus, this embodiment of the present disclosure can directly determine the temperature compensation opening degree Dp of the bypass valve based on the difference between the current temperature and the target temperature. The larger the temperature difference, the larger the corresponding correction range; conversely, the smaller the temperature difference, the smaller the correction range. Furthermore, by introducing the scaling factor K, this embodiment of the present disclosure can further limit the adjustment amount of the bypass valve opening. Therefore, this embodiment of the present disclosure can increase the adjustment speed when the temperature difference is large, so that the actual temperature inside the centrifuge chamber can approach the target temperature more quickly. At the same time, it can control the adjustment amount when the temperature difference is small, to avoid over-adjustment of the temperature inside the centrifuge chamber.

[0081] Optionally, the scaling factor K can range from (0, 10). Preferably, the scaling factor K is 2. The scaling factor K can also be adjusted based on the temperature change amplitude in the previous correction process. Specifically, if the temperature change amplitude in the previous correction process was small, a relatively large scaling factor K can be set to increase the adjustment speed so that the actual temperature inside the centrifuge chamber can approach the target temperature more quickly. Conversely, if the temperature change amplitude in the previous correction process was too large, a relatively small scaling factor K can be set to avoid over-adjusting the temperature inside the centrifuge chamber.

[0082] Optionally, the processor determines the first speed compensation opening Ds1 of the bypass valve in the following manner: the processor determines the first speed compensation opening Ds1 of the bypass valve based on the ratio of the target speed to the maximum speed. The ratio of the target speed to the maximum speed is positively correlated with the first speed compensation opening Ds1 of the bypass valve. Thus, the larger the ratio of the target speed to the maximum speed, the greater the correction magnitude of the reduction in the bypass valve opening. This is because the centrifuge chamber is undergoing a cooling process, and the heat generated by the rotor friction against the air has a negative effect on the cooling process. Furthermore, the larger the speed ratio, the greater the heat generation, which is less conducive to the rapid temperature reduction within the centrifuge chamber. Therefore, this embodiment of the present disclosure sets a larger first speed compensation opening Ds1 to allow for a greater reduction in the bypass valve opening, thereby further reducing the flow rate of high-temperature gaseous refrigerant in the bypass pipeline and increasing the amount of refrigerant entering the refrigerant circulation loop. This reduces the heating load on the evaporator and increases the system's cooling capacity, which is beneficial for the rapid temperature reduction within the centrifuge chamber.

[0083] Specifically, the processor determines the first speed compensation opening Ds1 of the bypass valve based on the ratio of the target speed to the maximum speed, including: when the ratio of the target speed to the maximum speed is less than or equal to a first ratio, the processor determines the first speed compensation opening as Ds. 11Alternatively, if the ratio of the target speed to the maximum speed is greater than a first ratio and less than or equal to a second ratio, the processor determines the first speed compensation setting to Ds. 12 Alternatively, if the ratio of the target speed to the maximum speed is greater than the second ratio, the processor determines the first speed compensation setting to Ds. 13 Among them, Ds 11 <Ds 12 <Ds 13 .

[0084] Thus, corresponding to the cooling process within the centrifuge chamber, the ratio of the target rotational speed to the maximum rotational speed and the first rotational speed compensation opening Ds1 of the bypass valve are positively correlated. This is because the heat generated by rotor friction against the air has a negative effect on the cooling process, and the larger the rotational speed ratio, the greater the heat generation, which is less conducive to the rapid temperature reduction within the centrifuge chamber. By setting a larger first rotational speed compensation opening Ds1, the embodiments of this disclosure can reduce the bypass valve opening by a greater margin, thereby further reducing the flow rate of high-temperature gaseous refrigerant in the bypass pipeline and increasing the amount of refrigerant entering the refrigerant circulation loop. Therefore, it can reduce the heating load on the evaporator and increase the cooling capacity of the system, which is beneficial for the rapid temperature reduction within the centrifuge chamber.

[0085] Optionally, the processor determines the second speed compensation opening Ds2 of the bypass valve in the following manner: the processor determines the second speed compensation opening Ds2 of the bypass valve based on the ratio of the target speed to the maximum speed. The ratio of the target speed to the maximum speed is negatively correlated with the first speed compensation opening Ds1 of the bypass valve. Thus, the larger the ratio of the target speed to the maximum speed, the smaller the correction magnitude for the increase in the bypass valve opening. This is because the centrifuge chamber is in a heating process at this time, and the heat generated by the rotor friction with the air plays a positive role in the heating process. Furthermore, the larger the speed ratio, the greater the heat generation, which is more conducive to the rapid temperature recovery within the centrifuge chamber. Therefore, this embodiment of the present disclosure sets a smaller second speed compensation opening Ds2 to make the increase in the bypass valve opening smaller, thereby preventing excessive flow of high-temperature gaseous refrigerant through the bypass pipeline. This coordinates the heating amount to the evaporator and the heat generated by rotor friction, which helps to avoid excessive temperature rise within the centrifuge chamber.

[0086] Specifically, the processor determines the second speed compensation opening Ds2 of the bypass valve based on the ratio of the target speed to the maximum speed, including: when the ratio of the target speed to the maximum speed is less than or equal to the first ratio, the processor determines the second speed compensation opening as Ds. 21 Alternatively, if the ratio of the target speed to the maximum speed is greater than the first ratio and less than or equal to the second ratio, the processor determines the second speed compensation setting to Ds. 22Alternatively, if the ratio of the target speed to the maximum speed is greater than the second ratio, the processor determines the second speed compensation setting to Ds. 23 Among them, Ds 21 >Ds 22 >Ds 23 .

[0087] Thus, corresponding to the heating process within the centrifuge chamber, the ratio of the target rotational speed to the maximum rotational speed and the second rotational speed compensation opening Ds2 of the bypass valve are negatively correlated. This is because the heat generated by rotor friction against the air plays a positive role in the heating process, and the larger the rotational speed ratio, the greater the heat generation, which is more conducive to the rapid temperature recovery within the centrifuge chamber. By setting a smaller second rotational speed compensation opening Ds2, the embodiments of this disclosure can reduce the increase in the bypass valve opening, thereby preventing excessive flow of high-temperature gaseous refrigerant in the bypass pipeline. This coordinates the heating amount to the evaporator and the heat generated by rotor friction, helping to avoid excessive temperature rise within the centrifuge chamber.

[0088] Preferably, the first ratio is 33% and the second ratio is 66%. However, it must be ensured that the first ratio is less than the second ratio. The first and second ratios can also be adjusted based on the specific configuration information of the centrifuge, or can be set to any other reasonable values. In some embodiments, when the speed ratio is less than or equal to the first ratio, it may correspond to the low speed setting of the rotor; when the speed ratio is greater than the first ratio and less than or equal to the second ratio, it may correspond to the medium speed setting of the rotor; when the speed ratio is greater than the second ratio, it may correspond to the high speed setting of the rotor. This disclosure does not impose specific limitations on this aspect.

[0089] Optionally, Ds 11 、Ds 12 、Ds 13 This setting can be adjusted based on the temperature change range from the previous correction process. However, it is necessary to ensure that Ds 11 <Ds 12 <Ds 13 Preferably, Ds 11 For 20 steps, Ds 12 For 40 steps, Ds 13 The number of steps is 60. The above opening value can also be adjusted according to the user's actual needs, set to any other reasonable value.

[0090] Optionally, Ds 21 、Ds 22 、Ds 23 This setting can be adjusted based on the temperature change range from the previous correction process. However, it is necessary to ensure that Ds 21 >Ds 22 >Ds 23 Preferably, Ds 21 For 60 steps, Ds22 For 40 steps, Ds 23 The number of steps is 20. The above opening value can also be adjusted according to the user's actual needs, set to any other reasonable value.

[0091] Combination Figure 5 As shown, this disclosure provides an apparatus 500 for controlling a centrifuge, including a processor 501 and a memory 502. Optionally, the apparatus may further include a communication interface 503 and a bus 504. The processor 501, communication interface 503, and memory 502 can communicate with each other via the bus 504. The communication interface 503 can be used for information transmission. The processor 501 can call logical instructions in the memory 502 to execute the method for controlling the centrifuge described in the above embodiment.

[0092] Furthermore, the logic instructions in the aforementioned memory 502 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0093] The memory 502, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 501 executes functional applications and data processing by running the program instructions / modules stored in the memory 502, that is, it implements the method for controlling the centrifuge in the above embodiments.

[0094] The memory 502 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 502 may include high-speed random access memory and may also include non-volatile memory.

[0095] Combination Figure 6 As shown, this disclosure provides a centrifuge, including a housing 600 and the aforementioned device 500 for controlling the centrifuge. The housing 600 has an internal centrifuge chamber. The device 500 for controlling the centrifuge is installed in the housing 600. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 500 for controlling the centrifuge can be adapted to feasible product bodies to achieve other feasible embodiments.

[0096] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a centrifuge.

[0097] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0098] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more 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 method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0099] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0100] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0101] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. 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 network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0102] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a centrifuge, characterized in that, The centrifuge includes a centrifuge chamber; a rotor disposed within the centrifuge chamber; and a refrigeration system for regulating the temperature within the centrifuge chamber, including a refrigerant circulation loop and a bypass pipe. The refrigerant circulation loop includes a compressor and an evaporator. A first end of the bypass pipe is connected to the compressor's exhaust pipe, and a second end of the bypass pipe is connected to the evaporator's inlet pipe. A bypass valve is provided on the bypass pipe. The method includes: Determine the target temperature inside the centrifuge chamber and the target rotational speed of the rotor; Determine the initial opening of the bypass valve based on the target temperature and target speed; Adjust the opening of the bypass valve to the initial opening; The step of determining the initial opening degree of the bypass valve based on the target temperature and target rotational speed includes: Determine the corresponding preset association based on the speed gear corresponding to the target speed; Based on the temperature range corresponding to the target temperature, determine the initial opening degree of the bypass valve from the preset correlation. The step of determining the corresponding preset association relationship based on the speed gear corresponding to the target speed includes: When the target speed is in a low-speed gear, the preset correlation relationship is determined as the first correlation relationship; or, When the target speed is in a high-speed gear, the preset correlation is determined to be the second correlation. In this case, the initial opening degree of the bypass valve corresponding to the target temperature in the first correlation is greater than the initial opening degree of the bypass valve corresponding to the second correlation.

2. The method according to claim 1, characterized in that, In the first correlation, the initial opening of the bypass valve is positively correlated with the target temperature inside the centrifuge chamber.

3. The method according to claim 1, characterized in that, In the second correlation, the initial opening of the bypass valve is positively correlated with the target temperature inside the centrifuge chamber.

4. The method according to any one of claims 1 to 3, characterized in that, After adjusting the opening of the bypass valve to the initial opening, the method further includes: Obtain the current temperature inside the centrifuge chamber; Adjust the opening degree of the bypass valve based on the difference between the current temperature and the target temperature.

5. The method according to claim 4, characterized in that, The step of adjusting the opening degree of the bypass valve based on the difference between the current temperature and the target temperature includes: If the difference between the current temperature and the target temperature is greater than the first temperature difference, reduce the opening of the bypass valve; or, If the difference between the current temperature and the target temperature is less than the second temperature difference, increase the opening of the bypass valve; The first temperature difference is greater than zero, and the second temperature difference is less than zero.

6. The method according to claim 5, characterized in that, The reduction of the bypass valve opening includes: Calculate Du1 = Di - Dp - Ds1 to obtain the first corrected opening Du1 after the bypass valve opening is reduced; Adjust the opening of the bypass valve to the first corrected opening; Where Di is the current opening degree of the bypass valve, Dp is the temperature compensation opening degree of the bypass valve, and Ds1 is the first speed compensation opening degree of the bypass valve.

7. The method according to claim 5, characterized in that, Increasing the opening of the bypass valve includes: Calculate Du2 = Di - Dp + Ds2 to obtain the second corrected opening Du2 after the bypass valve opening is increased; Adjust the opening of the bypass valve to the second corrected opening; Where Di is the current opening degree of the bypass valve, Dp is the temperature compensation opening degree of the bypass valve, and Ds2 is the second speed compensation opening degree of the bypass valve.

8. An apparatus for controlling a centrifuge, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to perform, when running the program instructions, the method for controlling a centrifuge as described in any one of claims 1 to 7.

9. A centrifuge, characterized in that, include: Centrifuge chamber; The rotor is located inside the centrifuge chamber; A refrigeration system for regulating the temperature inside a centrifuge chamber includes a refrigerant circulation loop and a bypass line. The refrigerant circulation loop includes a compressor and an evaporator. The first end of the bypass line is connected to the compressor's discharge line, and the second end of the bypass line is connected to the evaporator's inlet line. A bypass valve is provided on the bypass line. The device for controlling a centrifuge as described in claim 8 is electrically connected to a bypass valve.

10. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the method for controlling a centrifuge as described in any one of claims 1 to 7.

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