Circulation system based on magnetic turbulence technology

Abstract

The invention discloses a circulating system based on a magnetic turbulence technology. The circulating system comprises a silicone oil circulating pipeline assembly, a plate layer and a magnetic turbulator, an inlet and an outlet of the plate layer are respectively communicated with the silicone oil circulation pipeline assembly to form a closed circulation loop; a silicone oil-based magnetic fluid flows in the silicone oil circulating pipeline assembly and the plate layer; a turbulent flow assembly for disturbing the flow of the silicone oil-based magnetic fluid is arranged in the plate layer; and the magnetic turbulator is arranged below the plate layer so as to form a magnetic field acting on the silicone oil-based magnetic fluid. According to the invention, the requirement of higher-precision temperature uniformity can be met.

Description

Technical Field

[0001] This invention relates to the field of heat exchangers, and more specifically to a circulation system based on magnetic turbulence technology. Background Technology

[0002] Vacuum freezing technology, also known as freeze-drying technology, is a process for drying or treating materials in a low-temperature, vacuum environment. The circulation system, the core system of vacuum freezing technology, works by using a circulation pump to circulate silicone oil or other media. The circulation pipeline passes through electric heating and heat exchangers, and transfers heat or cold to the product through the plates. Combined with the vacuum environment, this achieves the freezing and drying of the product.

[0003] Because vacuum freezing technology requires high temperature accuracy, generally ±2℃, while some special pharmaceuticals require ±0.1℃. For example... Figure 4 As shown, the current channel structure cannot overcome problems such as dead zones and dead angles in the channel, the channel acting as a cold bridge and the temperature difference between the fluid inside the channel and the channel, the excessive temperature difference between the channel inlet and outlet, and the stratified gradient of temperature transfer. As a result, the temperature uniformity of the current channel structure plate is generally + / -1℃, and small plates can achieve + / -0.5℃, but it still cannot meet the uniformity requirements of high-temperature pharmaceuticals.

[0004] Therefore, a circulation system based on magnetic turbulence technology is proposed to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing systems and provide a circulation system based on magnetic turbulence technology that can achieve higher precision in temperature uniformity.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a circulation system based on magnetic turbulence technology, comprising a silicone oil circulation pipeline assembly, a plate layer, and a magnetic turbulence generator;

[0007] The inlet and outlet of the plate are respectively connected to the silicone oil circulation pipeline assembly to form a closed circulation loop; silicone oil-based magnetorheological fluid flows in the silicone oil circulation pipeline assembly and the plate.

[0008] The plate layer is provided with a flow disturbance component for disrupting the flow of the silicone oil-based magnetofluid.

[0009] The magnetic turbulence generator is disposed below the plate to form a magnetic field acting on the silicone oil-based magnetic fluid.

[0010] Preferably, the turbulence-disrupting component includes multiple rows of equidistant turbulence-disrupting columns, which are equidistantly arranged on the bottom plate of the plate layer, with adjacent rows staggered; the upper end of the bottom plate is connected to the top plate.

[0011] Preferably, the turbulence-disrupting component further includes a guide plate, which is disposed between the turbulence-disrupting column near the outlet of the plate and the outlet of the plate;

[0012] The guide plate is provided with multiple guide channels at intervals.

[0013] Preferably, the silicone oil circulation pipeline assembly includes a circulation pump, the outlet of which is connected to the shell-side inlet of a heat exchanger via a first pipeline, the shell-side outlet of the heat exchanger being connected to the inlet of a mixing tank via a second pipeline, the outlet of the mixing tank being connected to the inlet of the plate via a third pipeline, and the outlet of the plate being connected to the circulation pump via a fourth pipeline.

[0014] Preferably, it also includes an electromagnetic induction coil; the mixing tank is provided with a stirring motor, the output shaft of the stirring motor extends into the mixing tank, and a stirring blade is provided at the end of the output shaft away from the motor; the electromagnetic induction coil is arranged around the output shaft and spaced apart from the output shaft.

[0015] Preferably, an electric heater is provided on the first pipeline for heating the fluid in the first pipeline.

[0016] Preferably, it also includes a balancing tank, which is connected to the fourth pipeline and is used to hold excess silicone oil-based magnetic fluid.

[0017] Preferably, an inlet temperature probe is installed on the third pipeline; and an outlet temperature probe is installed on the fourth pipeline.

[0018] Preferably, the inlet of the heat exchanger is connected to a solenoid valve.

[0019] Preferably, it also includes a PID controller, and the inlet temperature probe, outlet temperature probe, electric heater, magnetic turbulence generator and solenoid valve are communicatively connected to the PID controller.

[0020] Compared with existing technologies, the beneficial effects of this invention are as follows: This circulation system based on magnetic turbulence technology utilizes the regulating effect of a magnetic field on magnetic fluids to enhance heat conduction and mixing through disordered fluid disturbance, thereby improving the uniformity of temperature distribution. Simultaneously, improvements to the plate structure overcome problems such as dead zones in the plate channels, temperature differences between the channels and the fluid within the channels (acting as cold bridges), and excessive temperature differences between the channel inlet and outlet, achieving higher precision in temperature uniformity. By setting up turbulence columns and using magnetic turbulence technology to create vortices within the plate, similar to a stirring effect, the temperature uniformity of the fluid within the plate is accelerated to 0℃, a significant improvement compared to the original temperature uniformity of + / -0.5℃. Furthermore, due to the reduction of cold bridges and dead zones, the actual effect will be even better than the original circulation system. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the connection of the circulation system based on magnetic turbulence technology of the present invention;

[0023] Figure 2 This is a schematic diagram of the plate layers of the present invention;

[0024] Figure 3 This is a schematic diagram of the arrangement of the turbulence-disrupting columns of the present invention;

[0025] Figure 4 This is a flow field diagram illustrating the temperature uniformity of the plate layer in the prior art;

[0026] Figure 5 This is a flow field diagram showing the temperature uniformity of the plate layer in an embodiment of the present invention.

[0027] In the diagram: 1. Circulating pump; 2. Electric heater; 3. Heat exchanger; 4. Mixing tank; 5. Electromagnetic induction coil; 6. Inlet temperature probe; 7. Plate; 8. Product; 9. Magnetic turbulence generator; 10. Outlet temperature probe; 11. Balance tank; 12. Silicone oil-based magnetic fluid; 13. Solenoid valve; 14. Stirring motor; 71. Turbulence column; 72. Bottom plate; 73. Top plate; 74. Fluid inlet; 75. Fluid outlet; 76. Guide plate; 77. Guide channel. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figure 1 , 2 As shown in Figures 3 and 5, this embodiment of the invention provides a circulation system based on magnetic turbulence technology, including a silicone oil circulation pipeline assembly, a plate layer 7, and a magnetic turbulence generator 9. The inlet and outlet of the plate layer 7 are respectively connected to the silicone oil circulation pipeline assembly to form a closed circulation loop. Silicone oil-based magnetic fluid flows within the silicone oil circulation pipeline assembly and the plate layer 7. A turbulence-disrupting component for disturbing the flow of the silicone oil-based magnetic fluid is disposed within the plate layer 7. The magnetic turbulence generator 9 is disposed below the plate layer 7 to form a magnetic field acting on the silicone oil-based magnetic fluid. The magnetic turbulence generator 9 regulates the movement of internal liquid molecules by controlling the magnetic field, thereby achieving a uniform temperature distribution of the liquid within the circulation system.

[0030] During application, when the fluid encounters the obstruction of the turbulence-inducing component, it flows around to both sides and forms vortices behind it. This transforms the fluid within the plate into turbulent flow, allowing for uniform dispersion and achieving a uniform temperature distribution. To further eliminate any potential flow dead zones, the magnetic field generated by the magnetic turbulence generator 9 applies additional disturbance to the fluid, enhancing its dispersion effect. The strength of this magnetic field can be adjusted via parameters such as voltage to prevent the fluid from always flowing along a fixed magnetic field line, thereby further improving the mixing uniformity of the flow.

[0031] Specifically, the flow-dispersing assembly includes multiple rows of equally spaced flow-dispersing columns 71, which are arranged at equal intervals on the bottom plate 72 of the plate layer 7, with adjacent rows staggered. The upper end of the bottom plate 72 is connected to the top plate 73. The flow-dispersing assembly also includes a guide plate 76, which is positioned between the flow-dispersing columns 71 near the outlet of the plate layer 7 and the outlet of the plate layer 7. The guide plate 76 has multiple flow-guiding channels 77 spaced apart. Specifically, when the fluid encounters the obstruction of the flow-dispersing columns 71, it will flow around to both sides and form vortices behind them. The combined effect of multiple vortices allows the fluid within the plate layer to be evenly dispersed, thereby achieving a uniform temperature distribution.

[0032] Specifically, the magnetic turbulence generator 9 provides a disordered magnetic field environment, which causes the magnetic fluid within the plate to form turbulence. The disordered disturbance of the fluid enhances heat conduction and heat mixing, thereby improving the uniformity of temperature distribution.

[0033] Specifically, multiple rows of equally spaced turbulence columns 71, combined with magnetic turbulence generators, can make the internal fluid movement more intense.

[0034] Specifically, the silicone oil circulation pipeline assembly includes a circulation pump 1, the outlet of which is connected to the shell-side inlet of the heat exchanger 3 via a first pipeline, the shell-side outlet of the heat exchanger 3 via a second pipeline, the outlet of the stirring tank 4 via a third pipeline, and the outlet of the stirring tank 4 via a fourth pipeline, which is connected to the inlet of the plate 7 via a third pipeline.

[0035] Specifically, it also includes an electromagnetic induction coil 5; a stirring motor 14 is provided on the stirring tank 4, the output shaft of the stirring motor 14 extends into the stirring tank 4, and a stirring blade is provided at the end of the output shaft away from the motor; the electromagnetic induction coil 5 is arranged around the output shaft and spaced apart from the output shaft.

[0036] Specifically, an electric heater 2 is installed on the first pipeline to heat the fluid in the first pipeline.

[0037] Specifically, it also includes a balance tank 11, which is connected to a fourth pipeline and is used to hold excess silicone oil-based magnetic fluid 12.

[0038] Specifically, an inlet temperature probe 6 is installed on the third pipeline; and an outlet temperature probe 10 is installed on the fourth pipeline.

[0039] Specifically, the inlet of heat exchanger 3 is connected to a solenoid valve 13.

[0040] Specifically, it also includes a PID controller, an inlet temperature probe 6, an outlet temperature probe 10, an electric heater 2, a magnetic turbulence generator 9, and a solenoid valve 13 that are connected to the PID controller via communication.

[0041] Specifically, the shell-side outlet of heat exchanger 3 is connected to the inlet of stirred tank 4 via a second pipeline; a stirring motor 14 is installed on stirred tank 4, the output end of which is connected to an output shaft and extends into stirred tank 4; an electromagnetic induction coil 5 is wound around the output shaft inside stirred tank 4. The purpose is to prevent the magnetic fluid from clumping and settling through motor stirring, and to make the silicone oil temperature more uniform through stirring. The electromagnetic induction coil imparts magnetism to the magnetic materials in the medium while making the silicone oil temperature more uniform.

[0042] Specifically, compared with the circulation system in the prior art, the circulation medium is changed from pure silicone oil to a magnetic silicone oil-based magnetic fluid (such as including Fe3O4 (25%), 5cSt silicone oil (74.4%), carbon nanotubes (0.5%), and antioxidants (0.1%)).

[0043] like Figure 1 , Figure 5 As shown in Figure B, during heating: the circulating pump 1 drives the silicone oil-based magnetic fluid 12 in the circulating pipe. After passing through the electric heater 2, the silicone oil-based magnetic fluid is heated. The fluid passes through the heat exchanger 3. If temperature adjustment is required, the solenoid valve 13 opens, and the magnetic fluid exchanges temperature with the cooling medium. During the heating process, the solenoid valve 13 achieves fine-tuning of the temperature by opening and closing. The magnetic fluid enters the stirring tank 4, and the stirring motor 14 makes the temperature more uniform and prevents the magnetic fluid from clumping and settling. At the same time, the electromagnetic induction coil 5 imparts magnetism to the magnetic fluid and makes the temperature stirring more uniform. The magnetic fluid enters the plate layer 7, and the plate layer 7 heats the product 8. The magnetic turbulence generator 9 provides a disordered magnetic field environment to the area of ​​the plate layer 7, accelerating the turbulence of the magnetic fluid in the plate layer 7 and breaking the laminar flow. The magnetic fluid circulates back to the circulating pump 1. When the magnetic fluid expands, the magnetic fluid flows into the balance tank 11. The inlet temperature probe 6 and the outlet temperature probe 10 form a PID (controller) with the electric heater 2 and the magnetic turbulence generator 9. The temperature accuracy is controlled by adjusting the power of the magnetic turbulence generator.

[0044] like Figure 1 , Figure 5As shown in Figure A, during refrigeration: the circulating pump 1 drives the silicone oil-based magnetic fluid 12 in the circulating pipe, which passes through the electric heater 2. At this time, the electric heater stops heating, and the fluid passes through the heat exchanger 3. The solenoid valve 13 opens, and the magnetic fluid exchanges temperature with the cooling medium. The temperature of the magnetic fluid decreases and enters the stirring tank 4. The stirring motor 14 makes the temperature more uniform and prevents the magnetic fluid from clumping and settling. At the same time, the electromagnetic induction coil 5 gives the magnetic fluid magnetism and makes the temperature stirring more uniform. The magnetic fluid enters the plate layer 7, and the plate layer 7 cools the product 8. The magnetic turbulence generator 9 gives the plate layer area a disordered magnetic field environment, which accelerates the turbulent flow of the magnetic fluid in the plate layer and breaks the laminar flow. The magnetic fluid circulates back to the circulating pump 1. When the magnetic fluid expands, it flows into the balance tank 11. The inlet temperature probe 6 and the outlet temperature probe 10 form a PID control with the electric heater, the magnetic turbulence generator 9, and the solenoid valve 13. By appropriately reducing the power of the magnetic turbulence generator, the disordered temperature rise due to turbulence is avoided.

[0045] The circulation system of this invention utilizes the regulating effect of a magnetic field on a magnetic fluid. By enhancing heat conduction and mixing through disordered fluid disturbance, it improves the uniformity of temperature distribution. Simultaneously, improvements to the plate structure overcome problems such as dead zones in the plate channels, temperature differences between the channels and the fluid within the channels (as shown in the diagram), and excessive temperature differences between the channel inlet and outlet, achieving higher precision in temperature uniformity. By incorporating turbulence columns and magnetic turbulence technology, fluid vortices are created within the plate, similar to stirring, accelerating the temperature uniformity of the fluid within the plate to 0°C. This represents a significant improvement compared to the original temperature uniformity of + / -0.5°C. Furthermore, due to the reduction of cold bridges and dead zones, the actual performance will be even better than the original circulation system.

[0046] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circulation system based on magnetic turbulence technology, characterized in that, Includes silicone oil circulation piping assembly, plate (7) and magnetic turbulence generator (9); The inlet and outlet of the plate (7) are respectively connected to the silicone oil circulation pipeline assembly to form a closed circulation loop; silicone oil-based magnetic fluid flows in the silicone oil circulation pipeline assembly and the plate (7); The plate (7) is provided with a flow disturbance component for disturbing the flow of the silicone oil-based magnetofluid; The magnetic turbulence generator (9) is disposed below the plate (7) to form a magnetic field acting on the silicone oil-based magnetic fluid.

2. The cyclic system according to claim 1, characterized in that, The turbulence-disrupting component includes multiple rows of equidistant turbulence-disrupting columns (71), which are equidistantly arranged on the bottom plate (72) of the plate layer (7), with adjacent rows staggered; the upper end of the bottom plate (72) is connected to the top plate (73).

3. The circulation system according to claim 2, characterized in that, The turbulence assembly also includes a guide plate (76), which is disposed between the turbulence column (71) near the outlet of the plate (7) and the outlet of the plate (7); The guide plate (76) is provided with multiple guide channels (77) at intervals.

4. The cyclic system according to claim 1, characterized in that, The silicone oil circulation pipeline assembly includes a circulation pump (1), the outlet of which is connected to the shell-side inlet of a heat exchanger (3) via a first pipeline, the shell-side outlet of which is connected to the inlet of a mixing tank (4) via a second pipeline, the outlet of which is connected to the inlet of a plate (7) via a third pipeline, and the outlet of which is connected to the circulation pump (1) via a fourth pipeline.

5. The circulation system according to claim 2, characterized in that, It also includes an electromagnetic induction coil (5); a stirring motor (14) is provided on the stirring tank (4), the output shaft of the stirring motor (14) extends into the stirring tank (4), and a stirring blade is provided at the end of the output shaft away from the motor; the electromagnetic induction coil (5) is arranged around the output shaft and spaced apart from the output shaft.

6. The cyclic system according to claim 4, characterized in that, An electric heater (2) is installed on the first pipeline for heating the fluid in the first pipeline.

7. The circulation system according to claim 4, characterized in that, It also includes a balance tank (11), which is connected to the fourth pipeline and is used to hold excess silicone oil-based magnetic fluid (12).

8. The circulation system according to claim 4, characterized in that, An inlet temperature probe (6) is installed on the third pipeline; an outlet temperature probe (10) is installed on the fourth pipeline.

9. The circulation system according to claim 2, characterized in that, The inlet of the heat exchanger (3) is connected to a solenoid valve (13).

10. The cyclic system according to claim 8, characterized in that, It also includes a PID controller, and the inlet temperature probe (6), outlet temperature probe (10), electric heater (2), magnetic turbulence generator (9) and solenoid valve (13) are communicatively connected to the PID controller.

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