Flattened magnetic coupling driving layer flow state stirring device

Abstract

The utility model discloses a flat magnetic coupling driving layer flow state stirring device which comprises a stirring machine shell, a base part of the constant-speed AC synchronous motor is fixedly connected and assembled to the stirrer shell; the driving riding tool is fixedly connected with the rotating kinetic energy output end part of the constant-speed motor in a transmission manner; the magnetic part combination is fixedly connected and arranged at the two end parts of the driving riding tool; and a magnet strip is fixedly arranged in the magnetic stirring piece in a wrapping mode, the extending direction of the magnet strip is perpendicular to the rotating axis direction of the magnetic stirring piece, and the two ends of the magnet strip correspond to the magnetic piece combinations located at the two ends of the driving riding tool in a one-to-one mode to achieve the magnetic coupling transmission effect. The technical problems that in the prior art, an automatic stirring cup with the magnetic coupling driven stirring extraction function mainly has short-time and rapid cooking functions, a laminar flow environment in a container cannot be stably established, then the stable concentration gradient of solid species dissolved substances cannot be maintained, and the whole is lack of functionality are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, and in particular to a flattened magnetic coupling driven laminar stirring device. Background Art

[0002] At present, the affluent modern society has promoted the differentiation, personalization and subsequent stratification of life, which is reflected in the so-called stratification, niche and customization in consumer behavior. Take tea and coffee beverages for leisure and health as an example. Traditionally, they are usually extracted with boiling water or hot water. In recent years, the market has gradually been filled by fashionable and high-quality cold-brewed tea and cold-brewed coffee. Generally speaking, for a given material and species, the conditions that contribute to the extraction speed include: contact surface area, temperature and mixing speed.

[0003] Commercially available cold brew or ice brew tea and coffee preparation equipment has no special countermeasures for excessive slow release at low temperatures, except for extending the soaking time. The time required generally ranges from several hours to overnight. In practice, it is often just an extension of drip filtration and static extraction. It just changes the traditional boiling water brewing to simple ice water static extraction. In fact, there is no flow of solids and liquids, nor the dissolution and transport of species molecules that rely on liquid flow. Only the weaker dissolution and transport phenomena generated by molecular collision and diffusion are left. This diffusion-type mass transport phenomenon dominated by molecular size and temperature leads to the time-consuming low-temperature static extraction.

[0004] Some automatic stirring cups with stirring and extraction functions, especially those with magnetic coupling to drive stirring, are mainly used for short-time and fast cooking. In the stirring container, the flow of solids and liquids creates a concentration gradient of each dissolved species that gradually decreases from the surface to the periphery. The concentration of molecules or nanoparticles of each species gradually decreases outward, which promotes the outward transportation of molecules or nanoparticles of each species, that is, the phenomenon of continuous dissolution, extraction, and separation. The speed of the laminar flow on the solid surface is related to the thickness of the above-mentioned concentration gradient: a higher speed produces a thinner interface layer, or a steeper concentration gradient, and has a faster transportation and dissolution phenomenon. However, too high a flow speed will produce turbulence or turbulence, completely losing the hierarchy, stability and reproducibility of the above-mentioned concentration gradient, and ultimately leading to the inability to stably establish a laminar flow environment in the container, and then the inability to maintain a stable concentration gradient of solid species dissolution, and the overall lack of functionality. Utility Model Content

[0005] To this end, the utility model provides a flattened magnetic coupling driven laminar stirring device to solve the technical problem that the automatic stirring cup with magnetic coupling driven stirring and extraction function in the prior art is mainly used for short-time and fast cooking, and cannot stably establish a laminar flow environment in the container, and then cannot maintain a stable concentration gradient of solid species dissolution, and lacks functionality as a whole.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A flattened magnetic coupling driven laminar stirring device, comprising:

[0008] Mixer housing;

[0009] A fixed speed motor, the base of which is fixedly assembled on the mixer housing;

[0010] A driving vehicle is connected to the rotating kinetic energy output end of the constant speed motor in a transmission fixed manner;

[0011] A magnetic component assembly is fixedly disposed at two end positions of the driving vehicle;

[0012] The magnetic stirring member is fixedly covered with a magnet bar inside, the extension direction of the magnet bar is perpendicular to the rotation axis of the magnetic stirring member, and the two ends of the magnet bar correspond to the magnetic member combinations located at the two ends of the driving vehicle to establish a magnetic coupling transmission effect.

[0013] On the basis of the above technical solution, the utility model is further described as follows:

[0014] As a further solution of the utility model, the interior of the mixer housing has an accommodating space;

[0015] The base of the constant speed motor is fixedly assembled in the accommodation space of the mixer housing, and the rotational kinetic energy output end of the constant speed motor is fixedly connected with a driving shaft through a coupling, and the end of the driving shaft away from the constant speed motor is connected to the driving vehicle through a transmission fixed assembly;

[0016] The extension direction of the driving vehicle is perpendicular to the axial direction of the driving shaft;

[0017] A stirring container is placed on the top bearing surface of the mixer housing;

[0018] The magnetic stirring member is connected and assembled inside the stirring container.

[0019] As a further solution of the present utility model, the constant speed motor is configured as a constant speed AC synchronous motor;

[0020] The rotation speed of the fixed speed AC synchronous motor is set to not more than 20 revolutions per minute.

[0021] As a further solution of the utility model, the rotation diameter of the magnetic stirring element is set to 30% to 50% of the diameter of the stirring container.

[0022] As a further solution of the utility model, the content diameter of the stirring container is set to be no higher than 20 cm;

[0023] The magnetic stirring piece is configured as a stick-shaped magnetic stirring piece;

[0024] The extension length of the stick-shaped magnetic stirring element is not more than 10 cm.

[0025] As a further solution of the utility model, the two ends of the magnet strip are provided with a one-to-one corresponding magnetic coupling transmission between the two ends of the driving vehicle and the magnetic component combination located at the two ends of the driving vehicle through the stirring container by means of magnetic attraction.

[0026] As a further solution of the utility model, one end of the magnet strip along its extension direction is set as an N-type magnetic field;

[0027] The other end of the magnet bar along its extension direction is set as an S-shaped magnetic field.

[0028] The magnetic component combination includes an N-type driving magnetic component and an S-type driving magnetic component;

[0029] A magnetic corresponding coupling transmission arrangement between the N-type driving magnetic attraction area formed by the N-type driving magnetic member and the S-type magnetic field of the magnet bar;

[0030] The S-shaped driving magnetic attraction area formed by the S-shaped driving magnetic part and the N-shaped magnetic field of the magnet bar are magnetically coupled and transmitted, and the magnetic stirring part is driven to perform rotational stirring motion through the air by the magnetic attraction force of the N-shaped driving magnetic part and the S-shaped driving magnetic part.

[0031] As a further solution of the present invention, the N-type driving magnetic components and the S-type driving magnetic components are both arranged as at least one group, and the number, size, shape, and magnetic force of at least one group of the N-type driving magnetic components and at least one group of the S-type driving magnetic components remain the same.

[0032] As a further solution of the utility model, the two ends of the driving vehicle along its extension direction are respectively provided with N-type magnetic force and S-type magnetic force;

[0033] The N-type driving magnetic component and the S-type driving magnetic component are respectively and one by one magnetically attracted and slidably fixedly arranged at the S-type magnetic position and the N-type magnetic position at both ends of the driving vehicle, and an adjustable distance is formed between the N-type driving magnetic component position and the S-type driving magnetic component position through sliding based on the driving vehicle, and the adjustable distance corresponds to being smaller than the rotation diameter of the magnetic stirring component.

[0034] As a further solution of the utility model, the magnetic stirring element is provided with a coating layer externally;

[0035] The coating layer is configured as a fully inert Teflon material layer.

[0036] The utility model has the following beneficial effects:

[0037] The stirring device forms a flat, low-center-of-gravity, stable and lightweight stirring combination with stable laminar flow conditions that is easily reproducible, that is, a stirring structure with a flat, low-center-of-gravity magnetic stirring member that rotates at a constant speed by means of a driving magnetic member outside the closed container and its magnetic coupling. This can effectively establish liquid flow conditions of laminar flow of contents or laminar flow to transitional flow rather than turbulent flow, and then maintain a stable concentration gradient of solid species dissolution through a laminar stirring environment, so that a stable interface environment and species molecule transport phenomenon promoted by a laminar flow are formed on the mass or molecular transmission interface of the solid-liquid phase contents, thereby improving the overall functional practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0039] Figure 1 This is a schematic diagram of the overall side view structure of a flattened magnetic coupling driven laminar flow stirring device provided in an embodiment of the utility model, wherein the arrow indicates the direction of rotation.

[0040] Figure 2 The overall side view and top view of the flattened magnetic coupling driven laminar stirring device provided in the embodiment of the utility model are schematic diagrams, and the arrow indicates the direction of rotation.

[0041] Figure 3 This is a schematic diagram of the overall side view structure of a flattened magnetic coupling driven laminar flow stirring device provided in an embodiment of the utility model, in which a stirring container is in a suspended state, and the arrow indicates the direction of rotation.

[0042] Figure 4 This is a schematic diagram of the overall side view structure of a flattened magnetic coupling driven laminar flow stirring device provided by an embodiment of the utility model, in which a magnetic stirring element is in a suspended state, and the arrow indicates the direction of rotation.

[0043] Figure 5 A schematic diagram of the structural dimensions of a flattened magnetic coupling driven laminar stirring device provided in an embodiment of the utility model is used to illustrate the Reynolds number calculation formula for the stirring magnetic component motion during laminar stirring operation.

[0044] Figure 6 A side view and a corresponding top view of the structural dimensions of a flattened magnetic coupling driven laminar flow stirring device provided in an embodiment of the utility model driven by a flat constant-speed AC synchronous motor.

[0045] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0046] 102-mixer housing, 1021-accommodation space, 1023-bearing surface;

[0047] 104-constant speed motor, 1041-driving shaft;

[0048] 106-driving vehicle; 108-magnetic component assembly; 110-stirring container;

[0049] 111-magnetic stirring element, 1111-suspension bearing sleeve;

[0050] 112-N type drive magnetic parts, 1121-N type drive magnetic attraction area;

[0051] 114-S type drive magnetic parts, 1141-S type drive magnetic attraction area;

[0052] 116-Contents;

[0053] D-diameter of the stirring vessel 110, calculated in meters (m);

[0054] d- the extension length of the magnetic stirring element 111, or the rotation diameter, calculated in meters (m);

[0055] H - the minimum total height of the mixer housing 102 and the accommodating space 1021;

[0056] n - the number of revolutions per second of the driving vehicle 106 and the magnetic stirring member 111;

[0057] NN type magnetic end pole, SS type magnetic end pole;

[0058] r - minimum coupling radius;

[0059] R - maximum coupling radius of the minimum accommodation space 1021;

[0060] Re-the motion Reynolds number of the magnetic stirring element 111;

[0061] μ-Liquid viscosity, in kilograms per meter per second (kg / m / s);

[0062] ρ - liquid density, in kilograms per cubic meter (kg / m 3 ) as the unit;

[0063] W-the width of the minimum accommodation space 1021. DETAILED DESCRIPTION

[0064] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of the present invention without substantially changing the technical content.

[0066] like Figures 1 to 6 As shown, the embodiment of the utility model provides a flattened magnetic coupling driven laminar stirring device, including a stirrer housing 102, a constant speed motor 104, a driving vehicle 106, a magnetic component assembly 108, a stirring container 110 and a magnetic stirring component 111; the above-mentioned structure is used to effectively form an easily reproducible flat, low-center-of-gravity, stable and lightweight stirring combination with stable laminar flow conditions, that is, by means of a stirring structure in which a flat, low-center-of-gravity magnetic stirring component driven by a driving magnetic component outside a closed container and its magnetic coupling drives the stirring structure to rotate at a constant speed, it is possible to effectively establish a liquid flow condition of laminar flow of the contents or a laminar to transitional flow rather than turbulent flow, and then maintain a stable concentration gradient of solid species dissolution through a laminar stirring environment, so that a stable interface environment and species molecule transport phenomenon promoted by a laminar flow are formed on the mass or molecular transmission interface of the solid-liquid phase contents, which significantly improves the overall functional practicality and adaptability. The specific settings are as follows:

[0067] Please refer to Figure 1 and Figure 2The top bearing surface 1023 of the mixer housing 102 is provided with a stirring container 110, and the interior of the stirring container 110 contains multi-phase contents 116 such as solid and liquid, and the inner bottom of the stirring container 110 is connected to a magnetic stirring member 111; the interior of the magnetic stirring member 111 is fixedly covered with a magnet bar, and the extension direction of the magnet bar is perpendicular to the rotation axis of the magnetic stirring member 111, and one end of the magnet bar along the extension direction is set to an N-type magnetic field, and the other end of the magnet bar along the extension direction is set to an S-type magnetic field.

[0068] The interior of the mixer housing 102 has a accommodating space 1021, the base of the constant speed motor 104 is fixedly assembled at the bottom of the accommodating space 1021 of the mixer housing 102, and the rotational kinetic energy output end of the constant speed motor 104 is fixedly connected to a driving shaft 1041 through a coupling transmission, and one end of the driving shaft 1041 away from the constant speed motor 104 is fixedly connected to a driving vehicle 106, the extension direction of the driving vehicle 106 is perpendicular to the axial direction of the driving shaft 1041, and both ends of the driving vehicle 106 along its extension direction have predetermined magnetic force.

[0069] The magnetic component assembly 108 includes an N-type driving magnetic component 112 and an S-type driving magnetic component 114, and the N-type driving magnetic component 112 and the S-type driving magnetic component 114 are respectively and one by one magnetically fixedly arranged at the top positions of the two ends of the driving vehicle 106, and the N-type driving magnetic attraction area 1121 formed by the N-type driving magnetic component 112 and the S-type magnetic field of the magnet bar are magnetically coupled and transmitted in a corresponding manner, and the S-type driving magnetic attraction area 1141 formed by the S-type driving magnetic component 114 and the N-type magnetic field of the magnet bar are magnetically coupled and transmitted in a corresponding manner, so as to drive the magnetic stirring component 111 to perform a rotational stirring motion through the air by means of magnetic attraction through the N-type driving magnetic component 112 and the S-type driving magnetic component 114.

[0070] As a preferred solution of this embodiment, the magnetic stirring element 111 is provided with an external covering, and the covering may be selected from but not limited to a fully inert Teflon material. The stirring container 110 is configured as a sealable container, such as a glass bottle with a screw cap and high-temperature sterilization, so as to meet the expected hygiene and safety requirements.

[0071] As an alternative to this embodiment, please refer to Figure 3 The stirring container 110 is based on Figure 3 The mixer housing 102 is suspended above the bearing surface 1023 of the mixer housing 102 .

[0072] Please refer to Figure 4The magnetic stirring member 111 disposed in the stirring container 110 and its contents 116 is based on Figure 4 The method is to be suspended in the contents 116 by means of a suspension bearing sleeve 1111 .

[0073] Currently, the laminar flow stirring phenomenon in fluid mechanics is defined based on the Reynolds number of the fluid movement in the stirring container 110, that is, the rotational movement of the magnetic stirring element 111. The Reynolds number represents the proportional relationship between the forward inertial force of the fluid and the restraining force of viscosity; it is an important dimensionless parameter in fluid mechanics and is used to define the generation of laminar flow and turbulent flow.

[0074] Viscosity can be regarded as a force that stabilizes fluids. Its tendency is to make the velocities of stacked fluids uniform. Therefore, when the Reynolds number is low, the momentum of the fluid particles is small, and the inertia of colliding around is offset by the viscosity. The stacked fluids move in the same direction, maintaining a stable laminar flow.

[0075] When the rotation speed or Reynolds number increases to a certain range, the tiny impact disturbance can no longer be absorbed by the viscosity, and the originally laminar liquid begins to disperse disorderly, causing the so-called turbulent flow or turbulent flow.

[0076] Please refer to Figure 5 In the chemical science stirring experiment procedure, the Reynolds number Re of the near-water fluid or the so-called Newtonian fluid is calculated as follows:

[0077] Re=[ρ]x[n]x[d] 2 / μ

[0078] The parameters in the formula depend on the physical conditions of the rotating magnetic stirring element 111 and the liquid content 116 in the stirring container 110. Specifically, μ is the viscosity of the liquid, in kilograms per meter per second (kg / m / s); ρ is the density of the liquid, in kilograms per cubic meter (kg / m 3 ) as the unit; d is the rotation diameter of the magnetic stirring member 111 or its two extreme ends, also in meters (m); n is the rotation speed of the magnetic stirring member 111, in the number of revolutions per second (1 / s).

[0079] Taking water at 4 degrees Celsius as an example, according to the above calculation units, μ is 0.00157 and ρ is 1000.

[0080] Continuing with the example of water at 20 degrees Celsius, μ is 0.00100 and ρ is 998.

[0081] When the Reynolds number reaches or exceeds 2100, turbulence occurs, and when it is lower than 2100, it gradually transitions to the laminar flow region.

[0082] In the innovative stirring procedure of the flattened magnetic coupling driven laminar stirring device, the Reynolds number Re of the stable laminar flow of the content 116 at a determined temperature is specifically controlled to be within or below the range of 100 to 500 according to the structure and shape design of the magnetic stirring element 111 and the stirring container 110.

[0083] According to the above Reynolds number formula and Figure 4 The symbols shown in the figure indicate that in a 4°C aqueous solution, since μ is 0.00157 and ρ is 1000, in order to control the Reynolds number Re to be within or below the range of 100 to 500, the parameters of laminar stirring are [n]x[d] 2 Must be maintained at or below 1.57x10 -4 Up to 7.85x10 -4 Between the range.

[0084] Furthermore, the range of the rotation speed n of the magnetic stirring element 111 is calculated and defined based on the rotation diameter d of the magnetic stirring element 111; the rotation diameter of the magnetic stirring element 111 or the distance d between its two extreme points is taken as 5 cm, that is, a 0.05-meter stick-shaped magnetic stirring element 111, then the laminar stirring rotation speed n of the magnetic stirring element 111 needs to be maintained in the range of 0.0628 to 0.314 revolutions per second, that is, 4 to 19 revolutions per minute.

[0085] The laminar stirring device described above, during the stirring process, continues to determine the diameter D of the stirring container 110 and the volume of its contents 116 according to the rotation diameter d of the magnetic stirring element 111; specifically, the rotation diameter d of the magnetic stirring element 111 is selected to be 30% to 50% of the diameter D of the stirring container 110, that is, d = 0.3D to 0.5D; therefore, the laminar stirring rotation speed n of the 5 cm stick-shaped magnetic stirring element 111 described above can be used for a stirring container 110 with a diameter of 10 to 17 cm, at which time the volume of the contents 116 of the stirring container 110 is in the range of 5 liters or less, and a smaller stirring container 110 corresponds to the use of a shorter or smaller magnetic stirring element 111, and the resulting Reynolds number is lower, which naturally still meets the aforementioned laminar stirring conditions.

[0086] The laminar flow stirring device of this embodiment needs to ensure reliable continuity and consistency, and must meet the following conditions: accurate motor drive speed, firm magnetic coupling and a stable and vibration-free container to prevent the laminar flow stirring from being disturbed and damaged. The laminar flow stirring device of this embodiment uses an alternating current (AC) synchronous motor, such as Figure 6As shown, because its rotation speed is always synchronized with the power frequency, it has the advantages of fixed rotation speed and is not affected by load changes, so it can ensure stable and reliable laminar stirring. At the same time, a thin, short, low-power, high-torque universal AC synchronous constant speed motor 104 is used to drive the driving magnetic coupling combination, which is the magnetic induction driving vehicle 106 on the driving shaft 1041, and the N-type driving magnetic part 112 and the S-type driving magnetic part 114 firmly adsorbed on the magnetic induction driving vehicle 106 and with adjustable spacing, and can ensure the smooth and stable operation of the magnetic coupling combination, that is, the flattened magnetic coupling stirring function creation of this laminar stirring device.

[0087] In the laminar flow stirring device of the present embodiment, the minimum total height H of the constant speed motor 104, the driving shaft 1041, the driving vehicle 106, the magnetic component assembly 108, the mixer housing 102 and the housing bearing surface 1023 is 1.7 inches or 4.3 centimeters, and the diameter of the constant speed motor 104 including the left and right fixing ears is 2.6 inches or 6.5 centimeters; therefore, by using the universal AC synchronous constant speed motor 104 with stable speed, the constant speed motor 104, the magnetic coupling assembly and the mixer housing 102 are flattened and miniaturized at the same time. Compared with the flattening of the traditional electromagnetic magnetic coupling drive, the flattening combination of the pure mechanical magnetic coupling drive has the advantages of simple structure and high torque.

[0088] Within the allowable range of the Reynolds number, motor power and accommodation space of the magnetic stirring member 111, the driving vehicle 106 and the magnetic stirring member 111 are proportionally enlarged, and the environmental conditions of the laminar stirring device of this embodiment can also be expanded to larger barrels or bottle containers. Please continue to refer to Figure 6 , taking the mixing container 110 with a cup or barrel bottom and the width W of the minimum accommodation space 1021 as an example, the maximum coupling radius of the driving vehicle 106 is R; the minimum coupling radius r is limited to the distance between the N-type driving magnetic component 112 and the S-type driving magnetic component 114 that can be positioned. When the distance between the N-type driving magnetic component 112 and the S-type driving magnetic component 114 is less than the minimum coupling radius r, the mutual magnetic attraction between the N-type driving magnetic component 112 and the S-type driving magnetic component 114 is greater than the positioning magnetic attraction between the N-type driving magnetic component 112 or the S-type driving magnetic component 114 and the driving vehicle 106, that is, at this time, the N-type driving magnetic component 112 and the S-type driving magnetic component 114 cannot be separated to complete the predetermined magnetic coupling effect. When the accommodation space 1021 is enlarged, the minimum accommodation space width W is also increased, and the maximum coupling radius R of the driving vehicle 106 and the rotation diameter d of the magnetic stirring component 111 can be enlarged accordingly.

[0089] As for the practical application of the stirring container 110, materials and temperature in the laminar stirring device of this embodiment, the preparation of daily beverages is used as an example to illustrate. The first example is the laminar flow ice extraction of commercially available filter coffee bags, and the second example is the laminar flow ice extraction of local tea leaves, and its convenience is highlighted by the personalized preparation scale.

[0090] Example 1: Laminar ice extraction of commercially available filter coffee bags or freshly ground coffee grains

[0091] A 12RPM (12 revolutions per minute) AC synchronous fixed speed motor 104 is driven by two cylindrical drive magnetic components with a diameter of 10mm and a height of 10mm. This component is then placed in a stainless steel mixer housing 102 with a length of 10cm, a width of 10cm, and a height of 4.3cm. The motor power supply is connected and the mixer is placed on a desktop. Figure 6 As shown; the stirring container 110 placed on it is a 250CC German SCHOTTDURAN brand wide-mouth transparent glass bottle (EU Design No.381983), with a bottle body diameter of about 95mm, a height of about 115mm, and a blue plastic screw cap on the top; a commercially available magnetic stirring piece 111 with a width of 9mm and a length of 50mm and coated with Teflon is placed at the bottom of the bottle; coffee powder is poured into the stirring container 110, and then 3 ice cubes of about 1 inch cube size and 150CC of room temperature filtered water are placed; shake it slightly to wet the coffee particles, then turn on the power of the magnetic coupling stirring drive motor and start timing; when the time is up, use the previously emptied filter coffee bag to filter the extract in the bottle into the coffee cup and drink it. The above materials were tested with two extraction times of 20 and 60 minutes. The color, aroma and taste of the 20-minute extraction were clearer and more prominent, while the taste and color of the 60-minute extraction were too saturated and acidic. Compared with directly soaking the filter bag or the coffee powder contained in it with room temperature water or ice water, this method should shorten the extraction time and enhance the layering of flavor. The flavor of freshly ground coffee powder is more diverse, and the extraction particle size, temperature, and time vary. Compared with the popular ice drip continuous extraction and filtration process of ice coffee, it is obviously more convenient and richer.

[0092] Example 2: Laminar ice extraction of tea leaves from this production

[0093] Tea leaves are different from coffee powder as a low-temperature extraction beverage material. Coffee powder is small in size and highly uniform, and is discarded after extraction; tea leaves are large in size and take a long time to be rehydrated. After rehydration, the volume increases, while retaining the natural complex and layered organic structure. The traditional hot drink process can be brewed and drunk multiple times. These characteristics will not change during the preparation process of cold-brewed tea, only its organic components, flavor and biochemical activity will change. Because it is not brewed with high-temperature hot water, different natural components, flavors and biochemical activities can be extracted and preserved at low temperatures. Using the same device as Example 1, add water to the ice cubes to 250 to 300CC, add 4 to 5 grams of commercially available medium and high-grade charcoal-roasted Tieguanyin tea leaves, and then extract under the same conditions. The rehydration of tea leaves under low-temperature laminar stirring is slow, especially for the varieties that are deeply roasted and rolled into balls. It takes nearly an hour for the tea leaves to rehydrate and sink to the bottom. At this time, the tea juice is bitter; after another hour, the ice has completely melted and the tea color has become more obvious; after separating the tea juice through the filter at the bottle mouth, the tea juice and the first-extracted tea leaves in the bottle are stored in the refrigerator; the bitterness of the tea juice after ice has subsided, and the tea taste is light and simple. Half a day later, ice and 300CC of water are added to the bottle for secondary extraction. Because the tea leaves have been completely rehydrated, the tea juice extracted by laminar stirring ice can be collected after 30 minutes, and the tea leaves in the bottle are returned to the refrigerator. After another day, the tea juice extracted by 250CC of ice and water for 1 to 2 hours is still suitable for drinking. The appropriate laminar ice extraction procedure and more layered flavored tea drinks should be determined by the type of tea, dosage and personal taste. Water and ice can also be replaced by room temperature filtered water or ice water, which is another option for the conventional static refrigerator extraction.

[0094] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A flattened magnetic coupling driven laminar stirring device, characterized in that: include: Mixer housing; A fixed speed motor, the base of which is fixedly assembled on the mixer housing; A driving vehicle is connected to the rotating kinetic energy output end of the constant speed motor in a transmission fixed manner; A magnetic component assembly is fixedly disposed at two end positions of the driving vehicle; The magnetic stirring member is internally fixedly covered with a magnet bar, the extension direction of the magnet bar is perpendicular to the rotation axis of the magnetic stirring member, and the two ends of the magnet bar correspond one-to-one with the magnetic member combination located at the two end positions of the driving vehicle to establish a magnetic coupling transmission effect.

2. The flattened magnetic coupling driven laminar flow stirring device according to claim 1, characterized in that: The mixer housing has an accommodating space inside; The base of the constant speed motor is fixedly assembled in the accommodation space of the mixer housing, and the rotational kinetic energy output end of the constant speed motor is fixedly connected with a driving shaft through a coupling, and the end of the driving shaft away from the constant speed motor is connected to the driving vehicle through a transmission fixed assembly; The extension direction of the driving vehicle is perpendicular to the axial direction of the driving shaft; A stirring container is placed on the top bearing surface of the mixer housing; The magnetic stirring element is connected and assembled inside the stirring container.

3. The flattened magnetic coupling driven laminar stirring device according to claim 2, characterized in that: The fixed speed motor is configured as a fixed speed AC synchronous motor; The rotation speed of the fixed speed AC synchronous motor is set to not more than 20 revolutions per minute.

4. The flattened magnetic coupling driven laminar flow stirring device according to claim 3, characterized in that: The rotation diameter of the magnetic stirring element is set to be 30% to 50% of the diameter of the stirring container.

5. The flattened magnetic coupling driven laminar stirring device according to claim 4, characterized in that: The inner diameter of the mixing container is set to be no greater than 20 cm; The magnetic stirring piece is configured as a stick-shaped magnetic stirring piece; The extension length of the stick-shaped magnetic stirring element is not more than 10 cm.

6. The flattened magnetic coupling driven laminar flow stirring device according to claim 3, characterized in that: The two ends of the magnet strip are arranged in a one-to-one magnetic coupling transmission between the mixing container and the magnetic component combination located at the two end positions of the driving vehicle by means of magnetic attraction.

7. The flattened magnetic coupling driven laminar flow stirring device according to claim 6, characterized in that: One end of the magnet bar along its extension direction is set to an N-type magnetic field; The other end of the magnet bar along its extension direction is set to an S-shaped magnetic field; The magnetic component combination includes an N-type driving magnetic component and an S-type driving magnetic component; A magnetic corresponding coupling transmission arrangement between the N-type driving magnetic attraction area formed by the N-type driving magnetic member and the S-type magnetic field of the magnet bar; The S-shaped driving magnetic attraction area formed by the S-shaped driving magnetic part and the N-shaped magnetic field of the magnet bar are magnetically coupled and transmitted, and the magnetic stirring part is driven to perform rotational stirring motion through the air by the magnetic attraction force of the N-shaped driving magnetic part and the S-shaped driving magnetic part.

8. The flattened magnetic coupling driven laminar flow stirring device according to claim 7, characterized in that: The N-type driving magnetic components and the S-type driving magnetic components are both arranged as at least one group, and the number, size, shape and magnetic force of at least one group of the N-type driving magnetic components and at least one group of the S-type driving magnetic components are all kept the same.

9. The flattened magnetic coupling driven laminar stirring device according to claim 7 or 8, characterized in that: The two ends of the driving vehicle along its extension direction are respectively provided with N-type magnetic force and S-type magnetic force; The N-type driving magnetic component and the S-type driving magnetic component are respectively and one by one magnetically attracted and slidably fixedly arranged at the S-type magnetic position and the N-type magnetic position at both ends of the driving vehicle, and an adjustable distance is formed between the N-type driving magnetic component position and the S-type driving magnetic component position through sliding based on the driving vehicle, and the adjustable distance corresponds to being smaller than the rotation diameter of the magnetic stirring component.

10. The flattened magnetic coupling driven laminar flow stirring device according to claim 1, characterized in that: The magnetic stirring element is provided with a coating layer externally; The coating layer is configured as a fully inert Teflon material layer.

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