A control method and system for a cooling magnetic stirrer and a cooling magnetic stirrer

Abstract

The present invention relates to a control method, system and cooling magnetic stirrer for a cooling magnetic stirrer, comprising: obtaining the liquid weight value of a solution to be stirred in a container; matching the stirring speed of the magnetic stirrer according to the liquid weight value, and outputting the stirring speed; controlling a preset stirrer to stir the solution in the container according to the stirring speed, and obtaining the liquid temperature value of the solution during the stirring process; determining the refrigeration parameter information of a preset refrigeration device according to the liquid temperature value; controlling the refrigeration device to refrigerate the solution in the container according to the refrigeration parameter information, and controlling the refrigeration device to perform auxiliary blowing stirring on the solution. The solution is directly stirred and cooled by a cooling suction stirrer. Compared with the method of cooling by a cold water bath, the above method is simpler to operate, and the temperature of the solution is relatively stable during the cooling process.

Description

Technical Field

[0001] The present invention relates to the field of magnetic stirrers, and in particular to a control method and system for a cooling magnetic stirrer and the cooling magnetic stirrer. Background Art

[0002] A magnetic stirrer is an instrument commonly used in laboratories, mainly used to stir low-viscosity liquids or solid-liquid mixtures.

[0003] Conventional magnetic stirrers can simultaneously heat the mixture while stirring it, but they cannot cool it down. For some tests requiring the mixture to be kept at low temperatures, operating at room temperature causes ice to melt quickly, leading to frequent temperature increases. Therefore, operators must maintain temperature control throughout the process using a cold water bath. This process requires operators to repeatedly pump water and add ice, which can easily lead to contamination and operational errors, and requires improvement. Summary of the Invention

[0004] In order to avoid contamination of the mixture and operational errors when the mixed liquid is stirred, the present invention provides a control method and system for a cooling magnetic stirrer and the cooling magnetic stirrer.

[0005] In a first aspect, the present invention provides a control method for a cooling magnetic stirrer, which adopts the following technical solution:

[0006] A control method for a cooling magnetic stirrer, comprising:

[0007] Obtain the liquid weight value of the solution to be stirred in the container;

[0008] Match the stirring speed of the magnetic stirrer according to the liquid weight value and output the stirring speed;

[0009] The solution in the container is stirred by controlling a preset stirring bar according to a stirring speed, and the liquid temperature value of the solution is obtained during the stirring process;

[0010] Determining refrigeration parameter information of a preset refrigeration device according to the liquid temperature value;

[0011] The refrigeration device is controlled to refrigerate the solution in the container according to the refrigeration parameter information, and the refrigeration device is controlled to perform auxiliary blowing and stirring on the solution.

[0012] By adopting the above technical solution, the conventional method of stirring a mixture by cooling and stirring it in a cold water bath is relatively complicated. In contrast, the present solution uses a magnetic stirrer to stir the mixture, and a refrigeration device is provided within the magnetic stirrer to generate cold air to cool the solution while stirring, which is more convenient. Furthermore, the above solution achieves high control accuracy when stirring and cooling the mixture, and can control the temperature of the solution at a specific cooling point.

[0013] Optionally, the refrigeration parameter information includes initial cooling power and cold bath constant temperature power, the refrigeration device includes an air blowing ring, the air blowing ring is used for blowing and cooling, and the refrigeration method of the refrigeration device includes:

[0014] Get the liquid level value of the solution in the container;

[0015] Determine the setting height value of the blowing ring of the refrigeration device according to the liquid level height value;

[0016] Determine a temperature deviation value based on the liquid temperature value and the preset cold bath temperature value, and match the initial cooling power of the refrigeration device based on the temperature deviation value;

[0017] Controlling the preset lower air outlet of the blowing ring to open and controlling the blowing ring to move up and down according to the set height value, controlling the refrigeration device to cool according to the initial cooling power and controlling the blowing ring to cool the preset cooling chamber to cool the solution;

[0018] According to the comparison between the liquid temperature value and the cold bath temperature value, it is determined to continue cooling at the initial cooling power or adjust the refrigeration device power;

[0019] Based on adjusting the power of the refrigeration device, determining the cold bath constant temperature power of the refrigeration device according to the cold bath temperature value, replacing the initial cooling power with the cold bath constant temperature power, and outputting the cold bath constant temperature power;

[0020] The refrigeration device is controlled to perform refrigeration according to the constant temperature power of the cold bath, and the air blowing ring is controlled to blow air into the cooling chamber to cool and keep the solution warm.

[0021] By adopting the above technical solution, when the blowing ring cools the cooling chamber at a set height position, the solution can be cooled starting from the liquid surface. When the temperature of the upper layer of the solution drops, the solution with a lower temperature has a higher density and can sink, while the solution with a higher temperature has a lower density and can float, thereby allowing the solution to be cooled evenly.

[0022] Optionally, the auxiliary blowing and stirring method of the refrigeration device includes:

[0023] The blowing force of the blowing ring is determined according to the liquid weight of the solution to be stirred in the container;

[0024] Controlling the air blowing ring to blow air into the cooling chamber according to the air blowing wind force to drive the rotating blades to rotate, and obtaining the auxiliary speed of the rotating blades in real time;

[0025] According to the comparison between the auxiliary speed and the stirring speed, the magnetic stirrer is decelerated in the reverse direction or the speed of the magnetic stirrer is adjusted;

[0026] Based on adjusting the speed of the magnetic stirrer, the speed adjustment amount is determined according to the stirring speed and the auxiliary speed;

[0027] The speed adjustment amount is used to replace the stirring speed, and the speed adjustment amount is output, and the magnetic stirrer is controlled to stir according to the speed adjustment amount;

[0028] Based on the reverse deceleration of the magnetic stirrer, the overspeed adjustment amount is determined according to the stirring speed and the auxiliary speed;

[0029] Match the reverse speed of the magnetic stirrer according to the overspeed adjustment amount;

[0030] The magnetic stirrer is rotated in reverse by controlling the reverse speed to reduce the auxiliary speed to the stirring speed.

[0031] By adopting the above technical solution, the wind blown out by the refrigeration device can drive the inner shell to rotate, which can assist the magnetic stirring device in rotating. The speed output by the magnetic stirring device can be reduced accordingly, reducing the power consumption of the magnetic stirring device.

[0032] Optionally, cooling water is generated on the inner wall of the cooling chamber, and the cooling water treatment method includes:

[0033] After the stirring is completed, the cooled weight of the solution in the container is obtained again;

[0034] Determine whether the cooling weight value is greater than the liquid weight value;

[0035] If and only if the cooling weight value is greater than the liquid weight value, there is cooling water, and the blowing ring is controlled to descend from the set height value to the reference height value according to the preset reference height value to scrape the cooling water to the bottom of the cooling chamber, and the blowing ring is controlled to reset from the reference height value to the vertex height value according to the preset vertex height value;

[0036] Determine the normal temperature power of the cooling device according to the preset room temperature;

[0037] The refrigeration device is controlled to cool according to the normal temperature power, and the blowing ring is controlled to blow air into the cooling chamber according to the preset reference force to dry the inner wall;

[0038] The preset recovery device is controlled to collect the cooling water at the bottom of the cooling chamber.

[0039] By adopting the above technical solution, since the blowing ring is slidably arranged in the cooling chamber, when cooling water appears in the cooling chamber, the system can control the vertical lifting and lowering of the blowing ring, thereby scraping off the cooling water attached to the inner wall of the cooling chamber. When the cooling water is scraped off, the blowing ring can blow air into the cooling chamber to dry the inside of the cooling chamber, which is more convenient.

[0040] Optionally, the container needs to be cleaned after the solution is stirred. The container cleaning method includes:

[0041] Acquire image information of the inner wall of the container;

[0042] Analyze the image information and the preset impurity database to determine the attachment position of the impurity in the container;

[0043] Determine the attachment height of the impurities according to the attachment position, match the preset spray height of the nozzle according to the attachment height, and determine the annular spray path according to the spray height;

[0044] Controlling the nozzle to draw cooling water from the recovery device and spraying the cooling water along a circular spray path at a spray height position of the container;

[0045] Control the preset upper air outlet of the blowing ring to open, and control the refrigeration device to cool according to the normal temperature power, and control the blowing ring to blow air upward according to the preset dust blowing force;

[0046] After a preset blowing time, the preset wiping device is controlled to wipe the circumference of the bottom of the container.

[0047] By adopting the above technical solution, the cooling water generated in the cooling chamber can be recovered by the recovery device and used for cleaning the inner wall of the inner shell, and the system can control the opening of the upper air outlet of the blowing ring, so that the wind generated by the refrigeration device can be blown out through the upper air outlet and enter the inner shell, so that the wind generated by the refrigeration device can dry the inner wall of the inner shell, which is more convenient.

[0048] Optionally, also include:

[0049] Determine the drying blowing force of the blowing ring according to the preset inner shell weight;

[0050] Calculate the ratio of the drying air blowing force to the dust blowing force, and determine the opening width ratio of the upper air outlet and the lower air outlet based on the force ratio;

[0051] Determine the total blowing force value of the blowing ring according to the drying blowing force and dust blowing force;

[0052] Control the opening of the upper air outlet and the lower air outlet of the blowing ring, and adjust the opening width of the upper air outlet and the lower air outlet according to the opening width ratio;

[0053] The blowing ring is controlled to blow air according to the total blowing force value, so as to control the wind blown out of the lower air outlet to drive the container to rotate and control the wind blown out of the upper air outlet to dry the inner wall of the container.

[0054] By adopting the above technical solution, the system can control the upper and lower air outlets of the blowing ring to open at the same time, so that the wind blown out of the upper air outlet can dry the inner shell, and the wind blown out of the lower air outlet can drive the inner shell to rotate, thereby assisting the inner shell in drying, which is more convenient.

[0055] In a second aspect, the present application provides a control system for a cooling magnetic stirrer, which adopts the following technical solution:

[0056] A control system for a cooling magnetic stirrer, comprising:

[0057] an acquisition module, for acquiring the liquid weight value of the solution to be stirred in the container, the liquid temperature value of the solution, the liquid level value of the solution in the container, the auxiliary speed of the rotating blade, the cooled weight value of the solution in the container, and image information of the inner wall of the container;

[0058] A memory for storing a program of the control method for a cooling magnetic stirrer;

[0059] The program in the processor memory can be loaded and executed by the processor to implement the above-mentioned control method of the cooling magnetic stirrer.

[0060] In a third aspect, the present application provides a cooling magnetic stirrer, which adopts the following technical solution:

[0061] A cooling magnetic stirrer comprises a memory and a processor, wherein the memory stores a computer program capable of being loaded by the processor and executing the control method for the cooling magnetic stirrer. The device also comprises a magnetic stirring base and a container mounted on the magnetic stirring base; a magnetic stirring device and a refrigeration device are provided in the magnetic stirring base; the container has a double-layer structure, comprising an outer shell and an inner shell, a cooling chamber being formed between the outer shell and the inner shell; and the inner shell has a holding chamber for holding a solution.

[0062] By adopting the above technical solution, the structural form of the cooling magnetic stirrer is specifically disclosed. The cooling magnetic stirrer can stir the mixture and also cool the mixture, which is more practical.

[0063] Optionally, an air blowing ring is vertically slidably installed in the cooling chamber, and the air blowing ring is connected to the refrigeration device; the air blowing ring is hollow inside, and the top of the air blowing ring has an upper air outlet with an adjustable opening width, and the bottom of the air blowing ring has a lower air outlet with an adjustable opening width;

[0064] The inner shell is rotatably mounted on the outer shell, the bottom of the inner shell is integrally provided with rotating blades, and the inner bottom surface of the outer shell is circumferentially provided with air guide vanes; the bottom of the outer shell has a water storage chamber connected to the cooling chamber for supplying cooling water and air;

[0065] The magnetic stirring base is provided with a recovery device, which is communicated with the water storage chamber and is used for recycling cooling water.

[0066] By adopting the above technical solution, the wind generated by the refrigeration device can enter the cooling chamber through the lower air outlet of the blowing ring and blow toward the rotating blades along the air guide plate, so that when the stirrer stirs the mixture, the inner shell can also rotate synchronously, thereby assisting the stirring of the mixture, and the rotational speed of the magnetic stirring device can be adjusted accordingly according to the rotational speed generated by the rotating blades, thereby reducing the power consumption of the magnetic stirring device.

[0067] In addition, the cooling water generated in the cooling chamber can be scraped off by the air blowing ring and enter the water storage chamber to be recycled by the recycling device. The recycled cooling water can be used for cleaning the container, which is more convenient.

[0068] Optionally, a cover ring is provided on the top of the cooling chamber to cover the cooling chamber, and an air outlet slot is formed between the cover ring and the inner shell, and the air outlet slot is parallel to the inner wall of the inner shell.

[0069] By adopting the above technical solution, after the upper air outlet of the blowing ring is opened, the cold air generated by the refrigeration device can be blown out through the upper air outlet and enter the inner shell through the narrow air outlet to blow and dry the inner wall of the inner shell, which is more convenient.

[0070] In summary, this application includes at least one of the following beneficial technical effects:

[0071] A control method for a cooling magnetic stirrer, wherein the magnetic stirrer is capable of stirring a mixture, and a refrigeration device is provided in the magnetic stirrer, which can generate cold air to cool the solution while the solution is being stirred, is convenient, and has high temperature control accuracy;

[0072] The wind blown out by the refrigeration device can drive the inner shell to rotate, which can assist the rotation of the magnetic stirring device. The speed output by the magnetic stirring device can be reduced accordingly, thereby reducing the power consumption of the magnetic stirring device.

[0073] The system can control the upper and lower air outlets of the blowing ring to open at the same time, so that the air blown out of the upper air outlet can dry the inner shell, and the air blown out of the lower air outlet can drive the inner shell to rotate, thereby assisting the inner shell in drying, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 This is a schematic diagram of the overall structure of a cooling magnetic stirrer according to an embodiment of the present invention;

[0075] Figure 2 is a cross-sectional view of a cooling magnetic stirrer according to an embodiment of the present invention;

[0076] Figure 3 This is a flow chart of a control method for a cooling magnetic stirrer according to an embodiment of the present invention;

[0077] Figure 4 is a flow chart of a refrigeration method for a refrigeration device according to an embodiment of the present invention;

[0078] Figure 5 is a flow chart of an auxiliary blowing and stirring method for a refrigeration device according to an embodiment of the present invention;

[0079] Figure 6 is a flow chart of a cooling water treatment method according to an embodiment of the present invention;

[0080] Figure 7 This is the process of the container cleaning method of the embodiment of the present invention Figure 1 ;

[0081] Figure 8 This is the process of the container cleaning method of the embodiment of the present invention Figure 2 .

[0082] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Magnetic stirring base; 11. Magnetic stirring device; 12. Refrigeration device; 13. Memory; 14. Processor; 2. Container; 21. Outer shell; 211. Air guide plate; 212. Water storage chamber; 22. Inner shell; 221. Rotating blade; 23. Cooling chamber; 24. Blowing ring; 241. Upper air outlet; 242. Lower air outlet; 25. Recovery device; 26. Cover ring; 261. Air outlet narrow opening. DETAILED DESCRIPTION

[0083] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0084] The embodiment of the present application discloses a cooling magnetic stirrer.

[0085] Reference Figure 1 and Figure 2 A cooling magnetic stirrer includes a magnetic stirring base 1 and a container 2 installed above the magnetic stirring base 1 and used for containing a solution to be stirred.

[0086] The magnetic stirring base 1 is equipped with a magnetic stirring device 11, a refrigeration device 12, a memory 13, and a processor 14. The memory 13 stores a computer program that can be loaded and executed by the processor 14 to control the cooling magnetic stirrer. The magnetic stirring device 11 is used to generate a magnetic field to stir the solution in the container 2. The refrigeration device 12 is used to generate cold air to cool the solution in the container 2.

[0087] The container 2 is a double-layer structure, comprising an outer shell 21 and an inner shell 22, wherein the inner shell 22 is rotatably mounted inside the outer shell 21. The diameter of the outer shell 21 is larger than that of the inner shell 22, so that a cooling chamber 23 is formed between the outer shell 21 and the inner shell 22.

[0088] An air blowing ring 24 is vertically slidably disposed between the inner wall of the outer shell 21 and the outer wall of the inner shell 22, and within the cooling chamber 23. The air blowing ring 24 is annular and hollow. The air blowing ring 24 is connected to the refrigeration unit 12, which can deliver cold air to the air blowing ring 24. The top of the air blowing ring 24 has an upper air outlet 241 with an adjustable opening width, and the bottom of the air blowing ring 24 has a lower air outlet 242 with an adjustable opening width. The opening and closing of the upper air outlet 241 and the lower air outlet 242 are controlled by the system to deliver cold air from the refrigeration unit 12 to the cooling chamber 23 via the air blowing ring 24.

[0089] The inner housing 22 has its rotation axis located at the center of its bottom, and rotating blades 221 are coaxially and integrally mounted on the bottom of the inner housing 22. Air guide vanes 211 are circumferentially arranged on the inner bottom surface of the outer housing 21, located outside the rotating blades 221. Air guide vanes 211 are tilted and not pointed toward the center of rotation; they are perpendicular to the rotating blades 221.

[0090] The bottom of the housing 21 has a water storage chamber 212, which is connected to the cooling chamber 23, and the connection port is located inside the air guide 211. The top of the magnetic stirring base 1 is provided with a recovery device 25, which is connected to the water storage chamber 212.

[0091] A cover ring 26 is provided on the top of the cooling chamber 23 to cover the cooling chamber 23. The cover ring 26 is threadedly connected to the outer shell 21. An air outlet slit 261 for blowing out cold air is formed between the cover ring 26 and the inner shell 22. The air outlet slit is circular. The air outlet slit 261 is parallel to the inner wall of the inner shell 22 so that the wind blown out from the air outlet slit 261 can blow on the inner wall of the inner shell 22.

[0092] When the solution in the inner shell 22 needs to be stirred, a stirring bar is placed in the inner shell 22 , and the magnetic stirring base 1 can generate a magnetic field to drive the stirring bar to rotate in the inner shell 22 , so that the solution is stirred.

[0093] When the solution needs to be cooled, the refrigeration device 12 generates cold air and delivers the cold air to the blowing ring 24. After the system controls the lower air outlet 242 of the blowing ring 24 to open, the blowing ring 24 can blow the cold air downward into the cooling chamber 23, thereby cooling the inner shell 22 and the solution therein.

[0094] And when the blowing ring 24 blows air downward, the cold air enters the position of the rotating blade 221 from the air guide plate 211 and finally enters the water storage chamber 212. During this process, the cold air can drive the rotating blade 221 to rotate, thereby causing the inner shell 22 to rotate synchronously to assist the magnetic stirrer to stir the solution.

[0095] During the cooling process, cooling water is easily produced on the inner wall of the cooling chamber 23. By lifting and sliding the blowing ring 24, the blowing ring 24 can scrape the cooling water and enter the water storage chamber 212 from the cooling chamber 23. Finally, the recovery device 25 can recover the cooling water and use it for cleaning the inner shell 22.

[0096] When the inner shell 22 is cleaned and dried, the blowing ring 24 can open the upper air outlet 241, and the refrigeration device 12 generates wind and blows air through the blowing ring 24. The wind can enter the inner shell 22 from the air outlet narrow opening 261 and blow along the inner wall of the inner shell 22. The wind can dry the inner shell 22, and finally the wind can converge on the central axis of the inner shell 22 and then flow upward and leave the inner shell 22.

[0097] When the upper air outlet 241 and the lower air outlet 242 of the air blowing ring 24 are opened at the same time, the air blowing ring 24 can both blow air toward the inner wall of the inner shell 22 and drive the inner shell 22 to rotate, thereby accelerating the drying of the inner shell 22 .

[0098] Based on the same inventive concept, an embodiment of the present invention provides a control method for a cooling magnetic stirrer.

[0099] Reference Figure 3 A method for controlling a cooling magnetic stirrer comprises the following steps:

[0100] Step S100: obtaining the liquid weight value of the solution to be stirred in the container 2.

[0101] The liquid weight is the weight of the solution to be stirred within inner shell 22. This value is obtained by a pressure sensor installed in the cooling magnetic stirrer. The total mass of container 2 and the liquid is calculated by subtracting the weight of container 2 from the total mass of container 2 to obtain the liquid weight. The weight of container 2 is a preset standard value that can be readily obtained by a skilled person and is not further described here.

[0102] Step S101: matching the stirring speed of the magnetic stirrer according to the liquid weight value, and outputting the stirring speed.

[0103] The stirring speed is the speed at which a magnetic stirrer stirs a solution. A stirring bar is placed in the solution, and the bar moves within the magnetic field generated by the magnetic stirrer, stirring the solution. The stirring speed corresponds to the liquid weight, and the stirring speed can be matched to the liquid weight.

[0104] Step S102: controlling a preset stirrer according to a stirring speed to stir the solution in the container 2, and obtaining a liquid temperature value of the solution during the stirring process.

[0105] The liquid temperature is the temperature of the solution being stirred in inner shell 22. This temperature is acquired by a temperature sensor mounted on the magnetic stirrer. This liquid temperature is the data required to be acquired in real time during the stirring process. The magnetic stirrer parameters are modified based on temperature changes. The magnetic stirrer has a bracket for mounting the temperature sensor, which is inserted vertically into inner shell 22.

[0106] Step S103: determining preset refrigeration parameter information of the refrigeration device 12 according to the liquid temperature value.

[0107] The cooling parameter information is the parameters required to generate cold air for the refrigeration device 12. The cooling parameter information includes the initial cooling power and the cold bath constant temperature power. The cooling parameter information is related to the liquid temperature value and is set according to the liquid temperature value.

[0108] Step S104: controlling the refrigeration device 12 to refrigerate the solution in the container 2 according to the refrigeration parameter information, and controlling the refrigeration device 12 to perform auxiliary blowing and stirring on the solution.

[0109] After obtaining the liquid weight and liquid temperature of the solution and determining the parameters of the refrigeration device 12, the refrigeration device 12 can generate cold air to cool the solution. During this process, the cold air generated by the cooling device can assist the stirring bar in stirring the solution. The refrigeration method of the refrigeration device 12 is not described here in detail and will be described in detail in subsequent steps.

[0110] Reference Figure 4 The refrigeration method of the refrigeration device 12 includes the following steps:

[0111] Step S200: obtaining the liquid level value of the solution in the container 2.

[0112] The liquid level height value refers to the height of the solution in the inner shell 22. The liquid level height value is obtained by a liquid level sensor provided on the magnetic stirrer, which will not be described in detail here.

[0113] Step S201: determining a setting height value of the air blowing ring 24 of the refrigeration device 12 according to the liquid level value.

[0114] In this embodiment, the refrigeration unit 12 generates cold air and delivers it to the air blowing ring 24, which blows air into the cooling chamber 23. As the solution in the inner shell 22 cools, the liquid level begins to drop. As the temperature of the upper layer of liquid decreases, the lower-temperature liquid descends, causing the lower-temperature liquid to rise, thereby achieving a uniform temperature for the solution.

[0115] Furthermore, the blowing position of the blowing ring 24 starts from the liquid level of the solution. If the position is set too high, cooling air will be wasted, while if the position is set too low, the solution temperature will be uneven.

[0116] Because the setting height value of the blowing ring 24 is related to the liquid level height value, in this embodiment, the setting height value is consistent with the liquid level height value.

[0117] Step S202: determining a temperature deviation value according to the liquid temperature value and a preset cold bath temperature value, and matching the initial cooling power of the refrigeration device 12 according to the temperature deviation value.

[0118] The cold bath temperature value refers to the ambient temperature of the solution during the test, and is also the temperature that the solution needs to reach. The cold bath temperature value is a value set by technicians and will not be detailed here.

[0119] The temperature deviation value is the temperature value that the solution needs to drop from the liquid temperature value to the cold bath temperature value.

[0120] The initial cooling power refers to the power required by the refrigeration device 12 to quickly cool the solution to a cold temperature. The initial cooling power of the refrigeration device 12 is related to the temperature deviation value. The larger the temperature deviation value, the greater the initial cooling power, so that the temperature of the solution can drop to the cold bath temperature more quickly.

[0121] Step S203: Control the preset lower air outlet 242 of the blowing ring 24 to open and control the blowing ring 24 to move up and down according to the set height value, control the refrigeration device 12 to cool according to the initial cooling power and control the blowing ring 24 to cool the preset cooling chamber 23 to cool the solution.

[0122] In this embodiment, a micro-cylinder is installed at the top of the container. The output end of the micro-cylinder is connected to the air blowing ring 24, which is used to drive the air blowing ring 24 up and down. After the set height value is determined, the system controls the micro-cylinder to drive the air blowing ring 24 to vertically move to the set position value according to the set height value, and opens the lower air outlet 242 of the air blowing ring 24 to enable the air blowing ring 24 to blow air downward into the cooling chamber 23. After the system sets the refrigeration device 12 according to the initial cooling power, the refrigeration device 12 can generate cold air, which is transported to the cooling chamber 23 through the air blowing ring 24, thereby rapidly cooling the inner shell 22 and the solution.

[0123] Step S204: Determine whether to continue cooling at the initial cooling power or adjust the power of the refrigeration device 12 based on the comparison between the liquid temperature value and the cold bath temperature value.

[0124] While the refrigeration unit 12 generates cold air to cool the solution, it is necessary to obtain the liquid temperature of the solution in real time and compare it with the cold bath temperature. If the liquid temperature is still greater than the cold bath temperature, the refrigeration unit 12 needs to continue cooling the solution at the initial cooling power. If the liquid temperature is not greater than the cold bath temperature, the solution temperature cannot be further lowered, and the initial cooling power of the refrigeration unit 12 needs to be adjusted.

[0125] Step S205: Based on adjusting the power of the refrigeration device 12, determining the cold bath constant temperature power of the refrigeration device 12 according to the cold bath temperature value, replacing the initial cooling power with the cold bath constant temperature power, and outputting the cold bath constant temperature power.

[0126] When the liquid temperature of the solution drops to the cold bath temperature, the solution needs to be kept warm at a low temperature so that the temperature of the solution does not rise again. At this time, the refrigeration device 12 cannot keep the solution warm at the initial cooling power and will continue to lower the temperature of the solution.

[0127] The cooling bath constant temperature power refers to the power of the refrigeration device 12 when the solution is kept at a low temperature and the solution temperature is kept at the cooling bath temperature value. The cooling bath constant temperature power corresponds to the cooling bath temperature value, and the cooling bath constant temperature power can be determined by the cooling bath temperature value.

[0128] Step S206: Control the refrigeration device 12 to perform refrigeration according to the constant temperature power of the cold bath, and control the air blowing ring 24 to blow air into the cooling chamber 23 to cool and keep the solution warm.

[0129] By replacing the initial cooling power with the cold bath constant temperature power, the refrigeration device 12 outputs cold air with the cold bath constant temperature power, so that the liquid temperature of the solution drops to the cold bath temperature value and can be maintained at the cold bath temperature value, and the temperature is not easy to rise during the stirring process.

[0130] Reference Figure 5 Because the inner shell 22 is provided with rotating blades 221 at the bottom, the inner shell 22 can rotate when the blowing ring 24 blows air into the cooling chamber 23, thereby assisting the magnetic stirrer and reducing the power consumption of the magnetic stirrer. The auxiliary blowing and stirring method of the refrigeration device 12 includes the following steps:

[0131] Step S300: determining the blowing force of the blowing ring 24 according to the liquid weight of the solution to be stirred in the container 2.

[0132] The blowing force is one of the parameters of the refrigeration device 12. The refrigeration device 12 can control the temperature and force of the blown air. The blowing force is related to the liquid weight of the solution to be stirred in the container 2. The heavier the liquid weight, the greater the blowing force required to drive the rotating blades 221 to rotate.

[0133] Step S301 : controlling the air blowing ring 24 to blow air into the cooling chamber 23 according to the air blowing wind force to drive the rotating blades 221 to rotate, and obtaining the auxiliary rotation speed of the rotating blades 221 in real time.

[0134] The auxiliary rotation speed refers to the rotation speed of the rotating blades 221. When the blowing ring 24 blows air into the cooling chamber 23 and drives the inner shell 22 to rotate, the auxiliary rotation speed of the rotating blades 221 needs to be obtained in real time to prevent the inner shell 22 from rotating too fast.

[0135] Step S302: Determine the reverse deceleration of the magnetic stirrer or adjust the speed of the magnetic stirrer according to the comparison between the auxiliary speed and the stirring speed.

[0136] When the auxiliary speed increases, the stirring speed of the solution also increases relatively. In order to ensure that the solution is always stirred at the stirring speed and not too fast or too slow, the stirring speed needs to be controlled, and the stirring speed is directly controlled by the magnetic stirrer. The auxiliary speed and the stirring speed are compared, and the magnetic stirrer is controlled according to the comparison result. When the auxiliary speed is less than or equal to the stirring speed, the magnetic stirrer speed is adjusted to keep the stirring speed of the solution unchanged. When the auxiliary speed is greater than the stirring speed, the magnetic stirrer is controlled to rotate in the opposite direction to keep the stirring speed of the solution unchanged.

[0137] Step S303: Based on adjusting the speed of the magnetic stirrer, a speed adjustment amount is determined according to the stirring speed and the auxiliary speed.

[0138] The speed adjustment is the difference between the stirring speed and the auxiliary speed. When the auxiliary speed increases and is lower than the stirring speed, the magnetic stirrer output speed needs to be reduced to maintain the stirring speed of the solution at the stirring speed. The speed adjustment is the speed of the magnetic stirrer after adjustment.

[0139] Step S304: replacing the stirring speed with the speed adjustment value, outputting the speed adjustment value, and controlling the magnetic stirrer to stir according to the speed adjustment value.

[0140] The speed of the magnetic stirrer is adjusted to the speed adjustment amount and output. At this time, the stirrer stirs the solution at the speed adjustment amount, and the speed of the inner shell 22 is the auxiliary speed. Therefore, the relative stirring speed of the solution is still the stirring speed.

[0141] Step S305: Based on the reverse deceleration of the magnetic stirrer, an overspeed adjustment amount is determined according to the stirring speed and the auxiliary speed.

[0142] The overspeed adjustment is the difference between the auxiliary speed and the stirring speed. When the auxiliary speed exceeds the stirring speed, it is necessary to reverse the magnetic stirrer to reduce the auxiliary speed relatively so that the stirring speed of the solution is maintained at the stirring speed.

[0143] Step S306: matching the reverse rotation speed of the magnetic stirrer according to the overspeed adjustment amount.

[0144] The reverse speed is the speed at which the magnetic stirrer rotates in the reverse direction. The reverse speed is equal to the overspeed adjustment.

[0145] Step S307: controlling the magnetic stirrer to rotate in the reverse direction at a reverse speed to reduce the auxiliary speed to the stirring speed.

[0146] After the magnetic stirrer is rotated in the opposite direction, the rotation direction of the stirrer is opposite to the rotation direction of the inner shell 22. When the auxiliary speed of the inner shell 22 is greater than the stirring speed, the reverse rotation speed of the magnetic stirrer can offset a portion of the auxiliary speed, so that the stirring speed of the solution is relatively reduced and maintained at the stirring speed.

[0147] Reference Figure 6 Due to the temperature change, cooling water will be generated on the inner wall of the cooling chamber 23. The cooling water treatment method includes the following steps:

[0148] Step S400: After the stirring is completed, the cooled weight value of the solution in the container 2 is obtained again.

[0149] The cooling weight value is the sum of the weight values ​​of the solution in the inner shell 22 and the cooling water on the inner wall of the cooling chamber 23. The cooling weight value is obtained by a pressure sensor provided on the magnetic stirrer.

[0150] Step S401: Determine whether the cooling weight value is greater than the liquid weight value.

[0151] By comparing the cooling weight value with the liquid weight value, it is determined whether cooling water is generated in container 2 and whether the cooling water needs to be treated. If the cooling weight value is greater than the liquid weight value, it indicates that cooling water is present in container 2. If the cooling weight value is equal to the liquid weight value, it indicates that there is no cooling water in container 2.

[0152] Step S402: If and only if the cooling weight value is greater than the liquid weight value, there is cooling water. According to the preset reference height value, the blowing ring 24 is controlled to descend from the set height value to the reference height value to scrape the cooling water to the bottom of the cooling chamber 23. According to the preset vertex height value, the blowing ring 24 is controlled to reset from the reference height value to the vertex height value.

[0153] The reference height value is a value set by technicians based on the structure of the magnetic stirrer, which is the lowest point of the cooling chamber 23 and is not described in detail here. The peak height value is a value set by technicians based on the structure of the magnetic stirrer, which is the highest point of the cooling chamber 23 and is not described in detail here.

[0154] When cooling water is present, the system uses a micro-cylinder to lower the blowing ring 24 from the set height value to the reference height value to scrape the cooling water attached to the inner wall of the cooling chamber 23 to the bottom of the cooling chamber 23, and then uses the micro-cylinder to move the blowing ring 24 upward to the vertex height value again, so that the system can easily adjust the position of the blowing ring 24 when stirring the solution next time.

[0155] Step S403: determining the normal temperature power of the cooling device according to the preset room temperature.

[0156] Normal temperature power is the power of the refrigeration device 12 when blowing and cooling according to room temperature. At this time, the cold air generated by the refrigeration device 12 is at room temperature. Normal temperature power corresponds to room temperature and can be determined according to room temperature.

[0157] Step S404: controlling the refrigeration device 12 to cool according to the normal temperature power, and controlling the blowing ring 24 to blow air into the cooling chamber 23 according to a preset reference force to dry the inner wall.

[0158] The reference force is a value set manually by technicians, which is the force with which the refrigeration device 12 blows air into the cooling chamber 23 . When the refrigeration device 12 blows air into the cooling chamber 23 using the reference force, the inner shell 22 and the rotating blades 221 are not easy to rotate.

[0159] After the normal temperature power and the reference strength of the refrigeration device 12 are determined, the refrigeration device 12 is controlled to dry the inner wall of the cooling chamber 23 according to the normal temperature power and the reference strength.

[0160] Step S405 : controlling the preset recovery device 25 to collect the cooling water at the bottom of the cooling chamber 23 .

[0161] The recovery device 25 is used to recover the cooling water scraped by the air blowing ring 24 to the bottom of the cooling chamber 23 . The recovered cooling water can be used to clean the container 2 .

[0162] Reference Figure 7 After the solution is stirred, the container 2 needs to be cleaned. The container 2 cleaning method includes the following steps:

[0163] Step S500: Acquire image information of the inner wall of the container 2.

[0164] The image information of the inner wall of the container 2 may include images of impurities attached to the container 2, and the image information is obtained by a camera set on the magnetic stirrer. The camera is located at the top of the container 2 and shoots downward to obtain image information inside the container 2.

[0165] Step S501 : Analyze the image information and a preset impurity database to determine the attachment position of the impurity in the container 2 .

[0166] The impurity database is a database obtained by machine learning, which contains image information of impurities and will not be described in detail here.

[0167] By comparing the image information with the impurity database, it is possible to determine whether there are impurities in the container 2 and to determine the location of the impurities.

[0168] Step S502: determining the attachment height of the impurities according to the attachment position, matching the preset spraying height of the nozzle according to the attachment height, and determining the annular spraying path according to the spraying height.

[0169] The attachment height refers to the highest position at which impurities are attached to the inner wall of the container 2 , and the attachment height can be obtained by analyzing the attachment position.

[0170] The nozzle is connected to the recovery device 25 and can extract cooling water from the recovery device 25 and spray it into the container 2. The spray height refers to the height at which the nozzle sprays water on the inner wall of the container 2. The spray height is determined by the attachment height. In this embodiment, the spray height is equal to the attachment height.

[0171] The annular spray path is the water spray path mode of the nozzle. When the spray height is determined, the inner wall of the inner shell 22 forms an annular spray path in a circumferential circle at the spray height position, and the nozzle sprays water along the annular spray path.

[0172] Step S503 : Control the spray head to absorb cooling water from the recovery device 25 and spray the cooling water along the annular spray path at the spray height position of the container 2 .

[0173] When cleaning the inner wall of the container 2, water is first sprayed along a circular spray path at the spray height position of the inner wall of the container 2 through the nozzle. At this time, the cooling water sprayed by the nozzle forms an annular water ring on the inner wall of the inner shell 22, making the attachment height position circumferentially moist.

[0174] Step S504: controlling the preset upper air outlet 241 of the blowing ring 24 to open, controlling the refrigeration device 12 to cool according to the normal temperature power, and controlling the blowing ring 24 to blow air upward according to the preset dust blowing force.

[0175] When the attachment height position of the inner wall of the container 2 is circumferentially moistened, the system controls the upper air outlet 241 of the blowing ring 24 to open and the lower air outlet 242 to close. At this time, the air blown out by the blowing ring 24 can be blown to the top of the cooling chamber 23 and blown to the inner wall of the inner shell 22 from the air outlet narrow opening 261.

[0176] When blowing air against the inner wall of the inner shell 22, the refrigeration unit 12 is controlled based on the normal temperature power and a preset dust blowing force. During blowing, the air from the air outlet slit 261 can push the cooling water at the injection height of the inner wall of the inner shell 22 vertically downward, thereby allowing the cooling water to clean the inner wall of the inner shell 22 uniformly around the circumference. The preset dust blowing force is a value set by technicians. When blowing air to clean the inner shell 22, the refrigeration unit 12 uses this dust blowing force, which will not be detailed here.

[0177] Step S505: After the preset blowing time, control the preset wiping device to wipe the circumference of the bottom of the container 2.

[0178] The blowing time is a value set by a technician, and by default the inner wall of the inner shell 22 can be cleaned after the blowing time has passed.

[0179] The erasing device is arranged on the magnetic stirrer and is located above the container 2. After the container 2 is cleaned with cooling water, the erasing device can extend into the inner shell 22 and wipe the inner bottom surface of the inner shell 22, so that excess cooling water on the inner bottom surface of the inner shell 22 can be wiped off.

[0180] Reference Figure 8 After the inner wall of the inner shell 22 is cleaned with cooling water and wiped by the erasing device, the inner wall of the inner shell 22 is still in a wet state and needs to be dried. The method for drying the inner wall of the inner shell 22 includes the following steps:

[0181] Step S600 : determining the drying blowing force of the blowing ring 24 according to the preset weight of the inner shell 22 .

[0182] The dry air blow force is the force with which the refrigeration unit 12 blows air into the cooling chamber 23. The dry air blow force controls the refrigeration unit 12 to blow air, enabling the inner shell 22 and the rotating blades 221 to rotate. The dry air blow force is related to the weight of the inner shell 22; the heavier the inner shell 22, the greater the required dry air blow force.

[0183] Step S601: Calculate the ratio of the drying air blowing force to the dust blowing force, and determine the opening width ratio of the upper air outlet 241 and the lower air outlet 242 according to the force ratio.

[0184] When the upper air outlet 241 and the lower air outlet 242 of the blowing ring 24 are both opened, after the air generated by the refrigeration device 12 is transported to the blowing ring 24, the air can be blown out from the upper air outlet 241 and the lower air outlet 242 of the blowing ring 24. At this time, the strength of the wind blown out of the upper air outlet 241 and the wind blown out of the lower air outlet 242 is determined by the opening width of the upper air outlet 241 and the lower air outlet 242.

[0185] To ensure that the force of the air blown out of the lower air outlet 242 is a drying force and the force of the air blown out of the upper air outlet 241 is a dust blowing force, the opening width ratio of the upper air outlet 241 to the lower air outlet 242 is related to the force ratio of the drying force to the dust blowing force. By calculating the force ratio of the drying force to the dust blowing force, the opening width ratio of the upper air outlet 241 to the lower air outlet 242 can be determined.

[0186] Step S602: determining the total blowing force value of the blowing ring 24 according to the drying blowing force and the dust blowing force.

[0187] The total blowing force value is the sum of the drying blowing force and the dust blowing force. When the refrigeration device 12 blows air at the total blowing force value, the lower air outlet 242 can generate wind with a drying blowing force, and the upper air outlet 241 can generate wind with a dust blowing force.

[0188] Step S603: controlling the upper air outlet 241 and the lower air outlet 242 of the blowing ring 24 to open, and adjusting the opening widths of the upper air outlet 241 and the lower air outlet 242 according to the opening width ratio.

[0189] After determining the opening width ratio of the upper air outlet 241 and the lower air outlet 242, the system controls the opening of the upper air outlet 241 and the lower air outlet 242 respectively and controls the opening width of the two, so that the lower air outlet can blow air with a drying blowing force and the upper air outlet can blow air with a dust blowing force.

[0190] In this embodiment, the upper air outlet 241 and the lower air outlet 242 are both rotatably provided with baffles for adjusting the opening size of the upper air outlet 241 and the lower air outlet 242. The baffles are controlled by the system, and the opening size of the upper air outlet 241 and the lower air outlet 242 can be changed by rotating the baffles.

[0191] Step S604: controlling the blowing ring 24 to blow air according to the total blowing force value, so as to control the wind blown out of the lower air outlet 242 to drive the container 2 to rotate and control the wind blown out of the upper air outlet 241 to dry the inner wall of the container 2.

[0192] When the refrigeration device 12 is controlled to blow air with the total blowing force value, the wind blown out from the upper air outlet 241 can dry the inner wall of the inner shell 22, and the wind blown out from the lower air outlet 242 can make the inner shell 22 rotate, so that the inner wall of the inner shell 22 can dry more quickly.

[0193] Based on the same inventive concept, an embodiment of the present invention provides a control system for a cooling magnetic stirrer, comprising:

[0194] An acquisition module is used to obtain the liquid weight value of the solution to be stirred in the container 2, the liquid temperature value of the solution, the liquid level value of the solution in the container 2, the auxiliary speed of the rotating blade 221, the cooled weight value of the solution in the container 2, and the image information of the inner wall of the container 2;

[0195] Memory 13, used for storing a program of a control method for a cooling magnetic stirrer;

[0196] The processor 14 and the program in the memory 13 can be loaded and executed by the processor 14 to implement a control method for a cooling magnetic stirrer.

[0197] Those skilled in the art will clearly understand that for the sake of convenience and brevity, the division of the above-mentioned functional modules is only used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-mentioned systems, devices, and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

Claims

1. A control method for a cooling magnetic stirrer, characterized in that: The container (2) is a double-layer structure, comprising an outer shell (21) and an inner shell (22), wherein the inner shell (22) is rotatably mounted inside the outer shell (21); the diameter of the outer shell (21) is larger than the diameter of the inner shell (22) so that a cooling chamber (23) is formed between the outer shell (21) and the inner shell (22); an air blowing ring (24) is vertically slidably disposed between the inner wall of the outer shell (21) and the outer wall of the inner shell (22) and inside the cooling chamber (23); the air blowing ring (24) is annular and hollow inside; the air blowing ring (24) is in communication with the refrigeration device (12), The refrigeration device (12) is capable of delivering cold air to the blowing ring (24); the top of the blowing ring (24) is provided with an upper air outlet (241) with an adjustable opening width, and the bottom of the blowing ring (24) is provided with a lower air outlet (242) with an adjustable opening width; the opening and closing of the upper air outlet (241) and the lower air outlet (242) are controlled by the system, and are used to deliver the cold air of the refrigeration device (12) to the cooling chamber (23) via the blowing ring (24); the rotating shaft of the inner shell (22) is located at the center of the bottom, and the bottom of the inner shell (22) is coaxially and integrally provided with rotating blades (221); The cold air can drive the rotating blades (221) to rotate, thereby causing the inner shell (22) to rotate synchronously to assist the magnetic stirrer in stirring the solution; include: Obtaining the liquid weight value of the solution to be stirred in the container (2); Matching the stirring speed of the magnetic stirrer according to the liquid weight value and outputting the stirring speed, the stirring speed being the speed at which the magnetic stirrer stirs the solution; Controlling a preset stirring bar according to a stirring speed to stir the solution in the container (2), and obtaining a liquid temperature value of the solution during the stirring process; Determining preset refrigeration parameter information of the refrigeration device (12) according to the liquid temperature value; Controlling the refrigeration device (12) to refrigerate the solution in the container (2) according to the refrigeration parameter information, and controlling the refrigeration device (12) to perform auxiliary blowing and stirring on the solution; Also includes: Determining the drying blowing force of the blowing ring (24) according to a preset weight of the inner shell (22); Calculating the force ratio of the drying blowing force and the dust blowing force, and determining the opening width ratio of the upper air outlet (241) and the lower air outlet (242) according to the force ratio, wherein the force of the air blown out of the lower air outlet (242) is the drying blowing force, and the force of the air blown out of the upper air outlet (241) is the dust blowing force; Determining the total blowing force value of the blowing ring (24) according to the drying blowing force and the dust blowing force; Controlling the opening of the upper air outlet (241) and the lower air outlet (242) of the blowing ring (24), and adjusting the opening widths of the upper air outlet (241) and the lower air outlet (242) according to the opening width ratio; The blowing ring (24) is controlled to blow air according to the total blowing force value, so as to control the wind blown out of the lower air outlet (242) to drive the inner shell (22) of the container (2) to rotate, and control the wind blown out of the upper air outlet (241) to dry the inner wall of the container (2).

2. The control method of a cooling magnetic stirrer according to claim 1, characterized in that: The refrigeration parameter information includes initial cooling power and cold bath constant temperature power. The refrigeration device (12) includes an air blowing ring (24). The air blowing ring (24) is used for blowing and cooling. The refrigeration method of the refrigeration device (12) includes: Obtaining the liquid level value of the solution in the container (2); Determining a setting height value of an air blowing ring (24) of a refrigeration device (12) according to a liquid level height value; Determining a temperature deviation value according to a liquid temperature value and a preset cold bath temperature value, and matching an initial cooling power of the refrigeration device (12) according to the temperature deviation value; Controlling the preset lower air outlet (242) of the air blowing ring (24) to open and controlling the air blowing ring (24) to move up and down according to a set height value, controlling the refrigeration device (12) to perform refrigeration according to the initial cooling power and controlling the air blowing ring (24) to cool the preset cooling chamber (23) to cool the solution; Determine whether to continue cooling at the initial cooling power or to adjust the power of the refrigeration device (12) according to the comparison between the liquid temperature value and the cold bath temperature value; Based on adjusting the power of the refrigeration device (12), determining the cold bath constant temperature power of the refrigeration device (12) according to the cold bath temperature value, replacing the initial cooling power with the cold bath constant temperature power, and outputting the cold bath constant temperature power; The refrigeration device (12) is controlled to perform refrigeration according to the constant temperature power of the cold bath, and the air blowing ring (24) is controlled to blow air into the cooling chamber (23) to cool and keep the solution warm.

3. The control method of a cooling magnetic stirrer according to claim 2, characterized in that: Cooling water is generated on the inner wall of the cooling chamber (23), and the cooling water treatment method includes: After the stirring is completed, the cooled weight value of the solution in the container (2) is obtained again; Determine whether the cooling weight value is greater than the liquid weight value; If and only if the cooling weight value is greater than the liquid weight value, cooling water exists, and according to a preset reference height value, the blowing ring (24) is controlled to descend from the set height value to the reference height value to scrape the cooling water to the bottom of the cooling chamber (23), and according to a preset vertex height value, the blowing ring (24) is controlled to reset from the reference height value to the vertex height value; Determine the normal temperature power of the cooling device according to the preset room temperature; Controlling the refrigeration device (12) to cool according to normal temperature power, and controlling the blowing ring (24) to blow air into the cooling chamber (23) according to a preset reference strength to dry the inner wall; The preset recovery device (25) is controlled to collect the cooling water at the bottom of the cooling chamber (23).

4. The control method of a cooling magnetic stirrer according to claim 3, characterized in that: After the solution is stirred, the container (2) needs to be cleaned. The method for cleaning the container (2) includes: Acquiring image information of the inner wall of the container (2); Analyzing the image information and a preset impurity database to determine the attachment position of the impurity in the container (2); Determine the attachment height of the impurities according to the attachment position, match the preset spray height of the nozzle according to the attachment height, and determine the annular spray path according to the spray height; Controlling the spray head to draw cooling water from the recovery device (25) and spray the cooling water along a circular spray path at a spray height position of the container (2); Controlling the preset upper air outlet (241) of the blowing ring (24) to open, controlling the refrigeration device (12) to cool according to the normal temperature power, and controlling the blowing ring (24) to blow air upwards according to the preset dust blowing force; After a preset blowing time, a preset wiping device is controlled to wipe the circumference of the bottom of the container (2).

5. A control system for a cooling magnetic stirrer, characterized in that: include: An acquisition module, used to acquire a liquid weight value of a solution to be stirred in the container (2), a liquid temperature value of the solution, a liquid level value of the solution in the container (2), an auxiliary rotation speed of the rotating blade (221), a cooled weight value of the solution in the container (2), and image information of an inner wall of the container (2); A memory (13) for storing a program of a control method for a temperature-reducing magnetic stirrer according to claim 4; A processor (14), wherein the program in the memory (13) can be loaded and executed by the processor (14) to implement a control method for a temperature-reducing magnetic stirrer.

6. A cooling magnetic stirrer, comprising a memory (13) and a processor (14), wherein the memory (13) stores a computer program that can be loaded by the processor (14) and execute the control method of the cooling magnetic stirrer according to claim 4, characterized in that: It also comprises a magnetic stirring base (1) and a container (2) mounted on the magnetic stirring base (1); a magnetic stirring device (11) and a refrigeration device (12) are arranged in the magnetic stirring base (1); the container (2) is a double-layer structure, comprising an outer shell (21) and an inner shell (22); a cooling chamber (23) is formed between the outer shell (21) and the inner shell (22); and the inner shell (22) has a containing chamber for containing a solution.

7. A cooling magnetic stirrer according to claim 6, characterized in that: An air blowing ring (24) is vertically slidably installed in the cooling chamber (23), and the air blowing ring (24) is connected to the refrigeration device (12); the air blowing ring (24) is hollow inside, and the top of the air blowing ring (24) has an upper air outlet (241) with an adjustable opening width, and the bottom of the air blowing ring (24) has a lower air outlet (242) with an adjustable opening width; The inner shell (22) is rotatably mounted on the outer shell (21); a rotating blade (221) is integrally provided at the bottom of the inner shell (22); and an air guide blade (211) is circumferentially provided on the inner bottom surface of the outer shell (21); the bottom of the outer shell (21) has a water storage chamber (212) connected to the cooling chamber (23) for the entry of cooling water and wind; The magnetic stirring base (1) is provided with a recovery device (25), the recovery device (25) being in communication with the water storage chamber (212) and being used for recovering cooling water.

8. A cooling magnetic stirrer according to claim 7, characterized in that: A cover ring (26) is provided at the top of the cooling chamber (23) for covering the cooling chamber (23); an air outlet narrow opening (261) is formed between the cover ring (26) and the inner shell (22); and the air outlet narrow opening (261) is parallel to the inner wall of the inner shell (22).

Images