Winding type three-dimensional spiral micro-channel mixer

Abstract

The utility model discloses a winding type three-dimensional spiral micro-channel mixer, which comprises an integrated mixer body, a mixing channel, a feeding channel and a collecting channel, the mixing channel is spirally arranged in the integrated mixer body, the feeding channel is arranged on the integrated mixer body, the collecting channel is arranged on the integrated mixer body, and the mixing channel is communicated with the collecting channel. The feeding channel and the collecting channel are respectively communicated with two ends of the mixing channel; through the design of the mixing channel with the spiral structure, not only is the utilization efficiency of the space of the integrated mixer body greatly improved, but also when fluid flows through the spiral structure, centrifugal force and radial pressure gradient are unbalanced, so that the fluid forms Dean flow in the mixing channel, mass transfer can be effectively enhanced, and the flow efficiency is improved. The fluid mixing effect is greatly enhanced; and meanwhile, the integrated mixer body is formed through 3D printing, the machining difficulty is small, the machining precision is high, assembly is not needed, and the problem of seepage caused by high throughput is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of microchannel mixers, in particular to a winding type three-dimensional spiral microchannel mixer. Background Technique

[0002] A microchannel mixer is a new type of microdevice applied in many fields such as chemical industry, energy, biology, medicine and food. It can utilize a tiny scale space to solve the problem of how to efficiently, quickly and evenly mix two or more fluid streams, and is an important part of a microfluidic system.

[0003] At present, the microchannel mixer is limited by traditional processing methods and can only process and form the internal microchannels in the same dimension. The channels are all arranged in multiple straight segments, resulting in poor mixing effect. Correspondingly, the production and processing cycle of the microchannel mixer is long, and the assembly process requirements are high. Moreover, in the industrial production process, due to the requirement of high-throughput liquid-phase reaction, a relatively high local pressure is formed inside the microchannels, often causing liquid leakage between the connections of different covers of the microchannel mixer, which cannot meet the actual needs. Therefore, the utility model proposes a winding type three-dimensional spiral microchannel mixer to solve the problems existing in the prior art. Content of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a winding type three-dimensional spiral microchannel mixer. Through the design of the spiral structure of the mixing channel, the winding type three-dimensional spiral microchannel mixer not only greatly improves the utilization efficiency of the space of the integrated mixer body, but also when the fluid flows through the spiral structure, the imbalance between the centrifugal force and the radial pressure gradient causes the fluid to form Dean flow in the mixing channel, which can effectively strengthen mass transfer and greatly enhance the mixing effect of the fluid. At the same time, in this application, an integrated mixer body formed by 3D printing realizes low processing difficulty, high processing accuracy, no need for assembly, and avoids the problem of liquid leakage in high-throughput cases.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A winding type three-dimensional spiral microchannel mixer, comprising an integrated mixer body, a mixing channel, a feed channel and a collection channel. The mixing channel is arranged in a spiral shape inside the integrated mixer body. The integrated mixer body is provided with a feed channel and a collection channel. The feed channel and the collection channel are respectively communicated with both ends of the mixing channel.

[0006] A further improvement lies in that: the mixing channel is composed of a three-dimensional spiral structure, there are multiple groups of the three-dimensional spiral structures and they extend and expand along the baseline, the three-dimensional spiral structure is one of an equidistant and equal-diameter spiral, an equidistant and unequal-diameter spiral, an unequal-distant and equal-diameter spiral, and an unequal-distant and unequal-diameter spiral, and the baseline is one of a planar spiral line, a three-dimensional spiral line, a planar circular arc line, and a wavy line.

[0007] A further improvement lies in that: the cross-sections of the mixing channel, the feeding channel, and the collection channel are one of a circular shape, a square shape, an elliptical shape, and a triangular shape, and the cross-sectional size ranges from 0.005 mm to 5 mm.

[0008] A further improvement lies in that: there are two or more groups of the feeding channels and they are connected at different angles, the angles at which the feeding channels are connected are one of a T shape, a Y shape, and a pyramid shape, and both the feeding channel and the collection channel are distributed on the integrated mixer body.

[0009] The beneficial effects of the present utility model are as follows: through the design of the mixing channel with a spiral structure, the present utility model not only greatly improves the utilization efficiency of the space of the integrated mixer body, but also when the fluid flows through the spiral structure, the imbalance between the centrifugal force and the radial pressure gradient causes the fluid to form Dean flow in the mixing channel, which can effectively strengthen mass transfer and greatly enhance the mixing effect of the fluid; at the same time, through the integrated mixer body formed by 3D printing in the present application, it realizes low processing difficulty, high processing precision, no need for assembly, avoids the problem of liquid leakage in high-throughput, and improves the practicability. Description of the Drawings

[0010] Figure 1 It is a top-down perspective structure diagram of Embodiment 1 of the present utility model.

[0011] Figure 2 It is a perspective structure diagram of Embodiment 2 of the present utility model.

[0012] Figure 3 It is a perspective structure diagram of Embodiment 3 of the present utility model.

[0013] Figure 4 It is a perspective structure diagram of Embodiment 4 of the present utility model.

[0014] Figure 5 It is a perspective structure diagram of Embodiment 5 of the present utility model.

[0015] Wherein: 1. Integrated mixer body; 2. Mixing channel; 3. Feeding channel; 4. Collection channel. Detailed Embodiments

[0016] To deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments. These embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.

[0017] The integrated mixer body 1, mixing channel 2, feeding channel 3 and collecting channel 4 are integrally formed by one of the 3D printing methods of stereolithography 3D printing, powder sintering 3D printing and metal 3D printing.

[0018] Embodiment 1

[0019] According to Figure 1 As shown, this embodiment provides a winding type three-dimensional spiral microchannel mixer, including an integrated mixer body 1, a mixing channel 2, a feeding channel 3 and a collecting channel 4. The mixing channel 2 is spirally arranged in the integrated mixer body 1. The integrated mixer body 1 is provided with a feeding channel 3 and a collecting channel 4. The feeding channel 3 and the collecting channel 4 are respectively smoothly communicated with both ends of the mixing channel 2, enabling efficient mixing of the fluid in the mixing channel.

[0020] The mixing channel 2 is composed of 10 groups of three-dimensional spiral structures and extends along a semi-circular arc baseline with a radius of 25 mm. The three-dimensional spiral structure is an equidistant and equal-diameter spiral. The cross-sections of the mixing channel 2, the feeding channel 3 and the collecting channel 4 are circles with a diameter of 5 mm.

[0021] The fluid flows through the mixing channel after entering from the feeding channel. Due to the spiral structure, Dean flow is formed, so that the fluid is fully mixed. The flow state of the fluid in the mixing channel, that is, the position where Dean flow appears, can be changed by adjusting the flow rate of the fluid entering the feeding channel, so that the microchannel mixer can meet more working conditions.

[0022] The feeding channel 3 is provided with two groups of Y-shaped connections with an angle of 60° between them. The feeding channel 3 and the collecting channel 4 are both distributed on the front side of the integrated mixer body 1.

[0023] Embodiment 2

[0024] According to Figure 2 As shown, this embodiment provides a winding type three-dimensional spiral microchannel mixer, including an integrated mixer body 1, a mixing channel 2, a feeding channel 3 and a collecting channel 4. The mixing channel 2 is spirally arranged in the integrated mixer body 1. The integrated mixer body 1 is provided with a feeding channel 3 and a collecting channel 4. The feeding channel 3 and the collecting channel 4 are respectively smoothly communicated with both ends of the mixing channel 2, enabling efficient mixing of the fluid in the mixing channel.

[0025] The mixing channel 2 is composed of 12 sets of three-dimensional spiral structures and extends along the baseline of a planar spiral line with 1.5 turns. The inner radius of the planar spiral line is 7 mm, the outer radius is 25 mm, and the three-dimensional spiral structure is a spiral with unequal pitch and equal diameter; the cross-sections of the mixing channel 2, the feed channel 3, and the collection channel 4 are circular with a diameter of 5 mm.

[0026] The fluid enters through the feed channel and flows through the mixing channel. Due to the spiral structure, it forms Dean flow and is thus fully mixed; the flow state of the fluid in the mixing channel, that is, the position where Dean flow appears, can be changed by adjusting the flow rate of the fluid entering the feed channel, so that the microchannel mixer can meet more working conditions.

[0027] The feed channel 3 is provided with three sets of T-shaped connections that are 90° to each other. The three feed channels 3 are distributed on three different sides of the integrated mixer body 1, and the overall morphology forms a pyramid angle. The collection channel 4 is arranged on the upper side of the integrated mixer body 1.

[0028] Embodiment 3

[0029] According to Figure 3 As shown, this embodiment provides a wound three-dimensional spiral microchannel mixer, including an integrated mixer body 1, a mixing channel 2, a feed channel 3, and a collection channel 4. The mixing channel 2 is spirally arranged inside the integrated mixer body 1. The feed channel 3 is arranged on the integrated mixer body 1, and the collection channel 4 is arranged on the integrated mixer body 1. The feed channel 3 and the collection channel 4 are smoothly connected to both ends of the mixing channel 2 respectively; so that the fluid is efficiently mixed in the inner mixing channel.

[0030] The mixing channel 2 is composed of 12 sets of three-dimensional spiral structures and extends along the baseline of a three-dimensional spiral line with a projection of 1.5 turns, an inner radius of 7 mm, an outer radius of 25 mm, and an extension of 30 mm in the Z-axis direction. The planar spiral line, the three-dimensional spiral structure is a spiral with unequal pitch and equal diameter; the cross-sections of the mixing channel 2, the feed channel 3, and the collection channel 4 are circular with a diameter of 5 mm.

[0031] The fluid enters through the feed channel and flows through the mixing channel. Due to the spiral structure, it forms Dean flow and is thus fully mixed; the flow state of the fluid in the mixing channel, that is, the position where Dean flow appears, can be changed by adjusting the flow rate of the fluid entering the feed channel, so that the microchannel mixer can meet more working conditions.

[0032] There are three sets of feed channels 3, with one set directly connected to the mixing channel and the other two sets connected to it at a 90° angle in the same plane in a T-shaped manner. The feed channel directly connected to the mixing channel is arranged on one side of the integrated mixer body 1, and the other two sets of feed channels are arranged on the upper side of the integrated mixer body 1. The collection channel 4 is arranged on the lower side of the integrated mixer body 1.

[0033] Example 4

[0034] According to Figure 4 As shown, this embodiment provides a wound three-dimensional spiral microchannel mixer, including an integrated mixer body 1, a mixing channel 2, a feed channel 3, and a collection channel 4. The mixing channel 2 is spirally arranged inside the integrated mixer body 1. The feed channel 3 is arranged on the integrated mixer body 1, and the collection channel 4 is arranged on the integrated mixer body 1. The feed channel 3 and the collection channel 4 are smoothly connected to both ends of the mixing channel 2 respectively, enabling efficient mixing of the fluid in the internal mixing channel.

[0035] The mixing channel 2 is composed of 15 sets of three-dimensional spiral structures and extends and expands along the baseline of a three-turn planar spiral line with an inner radius of 7 mm and an outer radius of 25 mm. The three-dimensional spiral structure is a spiral with unequal pitch and equal diameter. The cross-sections of the mixing channel 2, the feed channel 3, and the collection channel 4 are circles with a diameter of 2.5 mm.

[0036] Since the number of turns of the planar spiral line baseline increases the length of the mixing channel, when the fluid enters from the feed channel and flows through the mixing channel, due to the spiral structure, it forms Dean flow, making the fluid mixing more sufficient. At the same time, due to the increase in the length of the number of turns, the mixing channel becomes more compact, which is conducive to the emergence of Dean flow and improves the mixing efficiency of the fluid.

[0037] There are two sets of feed channels 3, which are connected in a T-shaped manner at a 90° angle to each other. The two sets of feed channels 3 are arranged on the upper and lower sides of the integrated mixer body 1, and the collection channel 4 is arranged on the lower side of the integrated mixer body 1.

[0038] Example 5

[0039] According to Figure 5 As shown, this embodiment provides a wound three-dimensional spiral microchannel mixer, including an integrated mixer body 1, a mixing channel 2, a feed channel 3, and a collection channel 4. The mixing channel 2 is spirally arranged inside the integrated mixer body 1. The outer shape of the integrated mixer body is cylindrical. The feed channel 3 is arranged on the integrated mixer body 1, and the collection channel 4 is arranged on the integrated mixer body 1. The feed channel 3 and the collection channel 4 are smoothly connected to both ends of the mixing channel 2 respectively, enabling efficient mixing of the fluid in the internal mixing channel.

[0040] The mixing channel 2 is composed of 24 sets of three-dimensional spiral structures and extends along the baseline of a planar spiral with an inner radius of 13 mm and an outer radius of 25 mm within 1.5 turns. The three-dimensional spiral structure is a spiral with unequal pitch and equal diameter, and the radius is 2.5; the cross-sections of the mixing channel 2, the feeding channel 3, and the collecting channel 4 are circular with a diameter of 2.5 mm.

[0041] Since the increase in the number of three-dimensional spiral structures in the mixing channel also increases the length of the mixing channel, it can also make the mixing channel more compact, which is conducive to the emergence of Dean flow and improves the mixing efficiency of the fluid.

[0042] The mixing distance of the fluid can also be increased by increasing the radius of the three-dimensional spiral structure of the mixing channel, which is more conducive to the emergence of Dean flow, thereby improving the fluid mixing efficiency.

[0043] There are two sets of feeding channels 3, and they are Y-shaped connected at an angle of 60° to each other. The two sets of feeding channels 3 are distributed on the cylindrical side and the upper side of the integrated mixer body 1, and the collecting channel 4 is arranged on the upper side of the integrated mixer body 1.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A winding type three-dimensional spiral microchannel mixer, characterized in that: It includes an integrated mixer body (1), a mixing channel (2), a feeding channel (3) and a collection channel (4). A mixing channel (2) is spirally arranged in the integrated mixer body (1). A feeding channel (3) is provided on the integrated mixer body (1), and a collection channel (4) is provided on the integrated mixer body (1). The feeding channel (3) and the collection channel (4) are respectively communicated with both ends of the mixing channel (2). The mixing channel (2) is composed of a three-dimensional spiral structure. There are multiple groups of the three-dimensional spiral structures and they extend and expand along a baseline. The three-dimensional spiral structure is one of an equidistant and equal-diameter spiral, an equidistant and unequal-diameter spiral, an unequal-distant and equal-diameter spiral, and an unequal-distant and unequal-diameter spiral. The baseline is one of a planar spiral line, a three-dimensional spiral line, a planar circular arc line, and a wavy line.

2. The coiled three-dimensional spiral microchannel mixer according to claim 1, wherein: The cross-sections of the mixing channel (2), the feeding channel (3) and the collection channel (4) are one of a circle, a square, an ellipse and a triangle, and the cross-sectional size ranges from 0.005 mm to 5 mm.

3. The coiled three-dimensional spiral microchannel mixer according to claim 1, characterized in that: There are two or more groups of the feeding channels (3) and they are connected at different angles. The angle between the connections of the feeding channels (3) is one of a T shape, a Y shape and a pyramid shape. The feeding channels (3) and the collection channels (4) are both distributed on the integrated mixer body (1).

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