Heating belt based on microbial reaction control

Abstract

The invention relates to the technical field of microbial reactors, in particular to a heating band based on microbial reaction control, which comprises a heating band matrix, the surface of the heating band matrix is provided with a shape memory polymer grid, and magnetostrictive microparticles are embedded in grid nodes. The reaction cabin adopts a bionic honeycomb structure, the first reaction diaphragm and the second reaction diaphragm in the reaction cabin form a unique substance transport and reaction regulation and control system, and the first reaction diaphragm made of a porous nanofiber membrane allows metabolites to pass through and blocks microorganism loss; when the temperature exceeds 40 DEG C, the porosity of the second reaction diaphragm of the temperature-sensitive hydrogel film is suddenly reduced, so that a self-feedback reaction inhibition layer is formed, the reaction rate of microorganisms in the reaction cabin is effectively regulated and controlled, and further heat generation is accurately controlled; the reaction cabins are distributed at equal intervals up and down, so that substances are efficiently and stably conveyed between the reaction cabins, and the uniformity and stability of the reaction in the whole heating belt are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of microbial reactors, in particular to a heating belt based on microbial reaction control. Background Art

[0002] A heating tape for microbial reaction control is a heating device specifically designed to control the temperature of a reaction vessel or reaction system during a microbial reaction. Its core function is to provide stable, adjustable heat to maintain the optimal temperature environment required for microbial growth and metabolism, thereby ensuring efficient microbial reactions. A heating tape typically consists of a heating element (such as a resistance wire or heating film), a temperature sensor, a temperature control module, and a wrapping material. The wrapping material is used to secure the heating element, protect the internal structure, and ensure uniform heat transfer to the reaction system.

[0003] Heating technology based on microbial metabolic heat production has attracted attention due to its environmental friendliness and bioregulatability, but existing solutions still have key technical bottlenecks: first, the reaction chamber structural design lacks an efficient material transfer network, and the accumulation of microbial metabolites can easily lead to reaction inhibition, and the heat production efficiency is more than 30% lower than that of traditional electric heating methods; second, the heat conduction control method is single, relying only on solid-state thermal conductive materials for passive heat dissipation, and cannot achieve active control of heat flow direction and intensity. The temperature control accuracy is difficult to meet the heating requirements of precision instruments; third, the mechanism for maintaining microbial activity is imperfect, and traditional replenishment methods can easily lead to microbial inactivation due to nutrient depletion or accumulation of metabolites. The continuous working time is usually less than 24 hours, which limits the expansion of actual application scenarios. Summary of the Invention

[0004] The object of the present invention is to provide a heating belt based on microbial reaction control to solve the above-mentioned technical defects.

[0005] To achieve the above effects, the technical solution adopted by the present invention is as follows: a heating belt based on microbial reaction control, comprising: a heating belt substrate, a shape memory polymer grid is provided on the surface of the heating belt substrate, and magnetostrictive microparticles are embedded in the grid nodes;

[0006] A plurality of reaction chambers are provided inside the heating belt base, and the plurality of reaction chambers are located inside the heating belt base and are equidistantly distributed up and down, and a diffusion main channel is provided between the upper and lower reaction chambers, and a plurality of conduction microchannels are provided on the upper and lower sides of the inner wall of the diffusion main channel, and one end of the upper and lower conduction microchannels are respectively connected to the interior of the upper and lower reaction chambers; a first reaction diaphragm and a second reaction diaphragm are provided inside each of the reaction chambers, and the first reaction diaphragm is located on the inner side of the reaction chamber, and the second reaction diaphragm is located on the outer side of the first reaction diaphragm; the outer side of each of the reaction chambers is covered with a heat-conducting skeleton, and a plurality of heat rectifying layers are provided on the inner side of the heat-conducting skeleton, and a transpiration heat dissipation layer is also fixed on the top of the heat-conducting skeleton, and a heat-conducting connecting groove matching the plurality of heat rectifying layers is provided on the outer side of the reaction chamber, and one side of each of the heat rectifying layers is respectively inserted into the interior of each heat-conducting connecting groove, and one side of each heat rectifying layer is in contact with the outer side of the second reaction diaphragm.

[0007] Preferably, the shape memory polymer grid adopts a composite system of polycaprolactone and graphene nanosheets, with a glass transition temperature of 32°C and a melting temperature of 58°C. The magnetostrictive microparticles are fixed by wrapping the particles with PDMS elastomer and then embedding them into SMP grid nodes.

[0008] Preferably, several of the reaction chambers adopt a bionic honeycomb structure, the inner walls of the main diffusion channel and the conductive microchannel are also loaded with nano-scale platinum catalysts, and the conductive microchannel and the main diffusion channel form an angle of 60°.

[0009] Preferably, the first reaction membrane adopts a porous nanofiber membrane with a pore size of 50-100nm, and the porous nanofiber membrane directly contacts the microorganisms and metabolites in the reaction chamber; the second reaction membrane adopts a temperature-sensitive hydrogel membrane, which is wrapped on the outside of the nanofiber membrane and constitutes the outermost boundary of the reaction chamber; one end of the conductive microchannel is connected to the second reaction membrane in the outer space of the reaction chamber.

[0010] Preferably, a plurality of liquid metal channels are provided inside the thermal conductive skeleton, and the inner walls of the plurality of liquid metal channels are coated with an iron oxide magnetic nanoparticle coating, and liquid metal is also provided inside the plurality of liquid metal channels. A flexible electromagnetic coil is also provided inside the thermal conductive skeleton and outside the plurality of liquid metal channels, and the flexible electromagnetic coil is wrapped inside the thermal conductive skeleton in the form of a silver nanowire-elastomer composite film.

[0011] Preferably, several nanochannel layers are provided inside the thermal rectifying layer, and the several nanochannel layers are all prepared by photolithography technology. The inner wall of each nanochannel layer is modified with a negatively charged polyelectrolyte to form a nanoscale ion screening interface; a graphene electrode grid is also embedded under the nanochannel layer.

[0012] Preferably, the interior of the transpiration heat dissipation layer is respectively provided with main vein-level channels, branch vein-level microgrooves and pore-level nanopores. The main vein-level channels are located on the outside of the transpiration heat dissipation layer and are prepared by 3D printing, and the main vein-level channels are tree-like hollow channels. Several channel branches are provided at the bottom of the main vein-level channels, and the angle of several channel branches is 45°. The end of each channel branch is connected with a branch vein-level microgrooves, and the inner walls of several branch vein-level microgrooves are prepared with pore-level nanopores by anodization, and the pore diameter of several pore-level nanopores is 50μm.

[0013] Preferably, the interior of the main vein-level channels, branch vein-level microgrooves and pore-level nanopores are filled with an ethanol-water mixed working fluid, the volume ratio of the ethanol-water mixed working fluid is 1:3, and the ends of several pore-level nanopores are sealed by a PDMS membrane, and 5-10μm bionic pores are distributed on the PDMS membrane.

[0014] Preferably, replaceable capsule compartments are integrated on the front and rear sides of the heating belt substrate, and each capsule compartment adopts a honeycomb storage tank made of flexible silicone material, and a pH-responsive rupture membrane is provided on one side of several capsule compartments close to the reaction chamber.

[0015] Preferably, the pH-responsive rupture membrane is prepared by electrospinning chitosan and sodium alginate in a mass ratio of 1:1 to form a membrane with a thickness of 50 μm and a swelling and rupture time of 15 min in a pH 4.5 buffer solution.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adopts a bionic honeycomb structure reaction chamber array for the heating belt, spiral microchannels between the chambers and loaded nano-scale platinum catalysts, which accelerates the diffusion of gas metabolites such as hydrogen and greatly improves the mass transfer efficiency; the thermal rectification layer can effectively control the direction of heat flow through the dielectrophoresis effect, significantly improves the thermal conductivity during forward heat flow, and prevents heat backflow during reverse thermal resistance. Combined with the gradient porous thermal conductive skeleton and the liquid metal channel with adjustable thermal resistance, precise heat conduction and thermal management are achieved.

[0018] 2. By combining a shape memory polymer grid with magnetostrictive microparticles on the surface of the heating tape substrate, the external magnetic field can be adjusted in the range of 0-50mT, achieving programmable bending from 0-90°, flexibly adapting to curved surface heating scenarios and meeting the needs of diverse and complex environments. The liquid metal channel can change the liquid metal filling rate according to the magnetic field strength, achieving a significant change in thermal conductivity, increasing from 150W / m·K to 320W / m·K or decreasing to 80W / m·K. The magnetic field changes can dynamically adjust the thermal resistance within the range of 0.01-0.05K·m / W, precisely controlling the heat dissipation and insulation of the heating tape to ensure that the temperature is controlled within the ideal range.

[0019] 3. The double-layer membrane structure of the reaction chamber: the inner porous nanofiber membrane allows metabolites to pass through while preventing microbial loss. The outer thermosensitive hydrogel membrane experiences a sharp drop in porosity when temperatures exceed 40°C, forming a self-feedback reaction inhibition layer that ensures a stable microbial reaction environment. The heater's integrated replaceable capsule compartments on the front and back sides of the heating belt, when the pH value in the reaction chamber drops below 4.5 due to accumulation of metabolites, the pH-responsive rupture membrane dissolves, releasing dormant microbial spores to replenish the microorganisms in the reaction chamber, maintaining the continuous and stable progress of the microbial reaction, and achieving self-repair, extending the heater's service life and stable operating time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of a heating belt structure based on microbial reaction control according to an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the internal structure of the heating belt substrate according to an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of a reaction chamber and a heat-conducting skeleton structure according to an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the internal structure of the reaction chamber and the heat-conducting skeleton according to an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the heat-conducting skeleton and heat rectifying layer structure according to an embodiment of the present invention;

[0026] Figure 6 is a schematic diagram of the transpiration heat dissipation layer and liquid metal channel structure according to an embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the internal structure of the transpiration heat dissipation layer according to an embodiment of the present invention.

[0028] In the figure, 1. Heating belt substrate; 2. Reaction chamber; 3. Heat-conducting skeleton; 4. Capsule chamber; 5. Main diffusion channel; 6. Conductive microchannel; 7. Transpiration heat dissipation layer; 8. First reaction membrane; 9. Second reaction membrane; 10. Heat rectification layer; 11. Nanochannel layer; 12. Flexible electromagnetic coil; 13. Liquid metal channel; 14. Main vein-level channel; 15. Branch vein-level microgroove; 16. Pore-level nanopore; 17. Heat-conducting connection groove. DETAILED DESCRIPTION

[0029] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] See also Figures 1 to 7 As shown, this embodiment discloses a heating belt based on microbial reaction control, comprising: a heating belt substrate 1, a shape memory polymer grid is set on the surface of the heating belt substrate 1, and magnetostrictive microparticles are embedded at the grid nodes, the shape memory polymer grid adopts a composite system of polycaprolactone and graphene nanosheets, with a glass transition temperature of 32°C and a melting point of 58°C, and the magnetostrictive microparticles are fixed by wrapping the particles with PDMS elastomer and then embedding them in SMP grid nodes; the heating belt can be programmably bent within the range of 0-90° by adjusting the external magnetic field strength in the range of 0-50mT to adapt to curved surface heating scenarios.

[0032] It should be noted that by embedding magnetostrictive microparticles in the shape memory polymer grid on the surface of the heating belt substrate 1 and adjusting the external magnetic field strength in the range of 0-50mT, the heating belt can be programmably bent in the range of 0-90°. This feature enables the heating belt to adapt to various curved surface heating scenarios, such as heating the surface of equipment with complex shapes, greatly expanding its application range.

[0033] Furthermore, a plurality of reaction chambers 2 are provided inside the heating belt substrate 1, and the plurality of reaction chambers 2 all adopt a bionic honeycomb structure. The plurality of reaction chambers 2 are located inside the heating belt substrate 1 and are equidistantly distributed up and down, and a total diffusion channel 5 is provided between the upper and lower plurality of reaction chambers 2. A plurality of conductive microchannels 6 are provided on the upper and lower sides of the inner wall of the total diffusion channel 5, and one end of the upper and lower plurality of conductive microchannels 6 are respectively connected to the interiors of the upper and lower plurality of reaction chambers 2; in addition, nano-scale platinum catalysts are also loaded on the inner walls of the total diffusion channel 5 and the conductive microchannel 6, which can accelerate the diffusion efficiency of gas metabolites such as hydrogen, and the conductive microchannel 6 forms a 60° angle with the total diffusion channel 5.

[0034] It should be noted that the reaction chambers 2 are equidistantly distributed in the upper and lower parts, and are connected by the main diffusion channel 5 and the conduction microchannel 6. The inner walls of the conduction microchannel 6 and the main diffusion channel 5 are loaded with nano-scale platinum catalysts to accelerate the diffusion efficiency of gas metabolites such as hydrogen. At the same time, this structural layout makes the material transmission between the reaction chambers efficient and stable, ensuring the uniformity and stability of the reaction inside the entire heating zone.

[0035] Furthermore, each reaction chamber 2 is provided with a first reaction membrane 8 and a second reaction membrane 9, and the first reaction membrane 8 is located on the inner side of the reaction chamber 2, and the second reaction membrane 9 is located on the outer side of the first reaction membrane 8; the outer side of each reaction chamber 2 is covered with a heat-conducting skeleton 3, and the inner side of the heat-conducting skeleton 3 is provided with a plurality of heat rectifying layers 10, and the top of the heat-conducting skeleton 3 is also fixed with a transpiration heat dissipation layer 7, and the outer side of the reaction chamber 2 is provided with a heat-conducting connecting groove 17 that matches the plurality of heat rectifying layers 10, and one side of each heat rectifying layer 10 is respectively inserted into the interior of each heat-conducting connecting groove 17, and one side of each heat rectifying layer 10 is in contact with the outer side of the second reaction membrane 9.

[0036] It should be noted that the thermal conductive skeleton 3 adopts a gradient porous structure, transitioning from micron-scale to nanoscale pores. This structure is conducive to quickly collecting the heat generated by the reaction chamber, and can effectively control the heat dissipation rate, thereby enhancing the overall thermal stability of the heating belt. At the same time, it cooperates with the thermal rectification layer 10, the liquid metal channel 13, etc. to ensure the structural stability and thermal performance reliability of the heating belt under different working conditions.

[0037] Specifically, the first reaction membrane 8 adopts a porous nanofiber membrane with a pore size of 50-100nm, which allows metabolic products to pass through and prevents the loss of microorganisms. The porous nanofiber membrane is in direct contact with the microorganisms and metabolic products in the reaction chamber 2; the second reaction membrane 9 adopts a temperature-sensitive hydrogel membrane, which is wrapped on the outside of the nanofiber membrane and constitutes the outermost boundary of the reaction chamber. When the temperature exceeds 40°C, the porosity drops sharply from 30% to 5%, forming a self-feedback reaction inhibition layer; one end of the conductive microchannel 6 is connected to the second reaction membrane 9 in the outer space of the reaction chamber 2, and cooperates with the total diffusion channel 5 to form a material diffusion path between the reaction chambers 2.

[0038] It should be noted that, through the above-mentioned structural design, the reaction chamber 2 adopts a bionic honeycomb structure, and the first reaction membrane 8 and the second reaction membrane 9 inside form a unique material transfer and reaction regulation system. The first reaction membrane 8 made of porous nanofiber membrane allows metabolic products to pass through and blocks the loss of microorganisms. The porosity of the second reaction membrane 9 of the thermosensitive hydrogel membrane drops sharply when the temperature exceeds 40°C, forming a self-feedback reaction inhibition layer, which effectively regulates the reaction rate of microorganisms in the reaction chamber, and thus accurately controls heat generation; the double-layer membrane structure of each reaction chamber 2, especially the temperature-sensitive characteristics of the second reaction membrane 9, can adjust the environment in the reaction chamber according to temperature changes, provide a relatively stable living and metabolic environment for microorganisms, and avoid affecting the activity of microorganisms due to excessively high or low temperatures.

[0039] Furthermore, several liquid metal channels 13 are provided inside the thermal conductive skeleton 3, and the inner walls of several liquid metal channels 13 are coated with an iron oxide magnetic nanoparticle coating. Liquid metal is also provided inside several liquid metal channels 13. Flexible electromagnetic coils 12 are also provided inside the thermal conductive skeleton 3 and on the outside of the several liquid metal channels 13, and the flexible electromagnetic coils 12 are wrapped inside the thermal conductive skeleton 3 in the form of a silver nanowire-elastomer composite film.

[0040] It should be noted that, through the above-mentioned structural design, the liquid metal channel 13 in the heat-conducting skeleton 3 cooperates with the flexible electromagnetic coil 12 to adjust the liquid metal filling rate by the magnetic field strength, so as to achieve thermal conductivity switching between 150W / m·K-320W / m·K, and dynamic adjustment of thermal resistance within the range of 0.01-0.05K·m / W. The response time is less than 50ms, and heat conduction can be regulated quickly and accurately. The heat rectifying layer 10 increases the forward heat conduction efficiency by 47% through the dielectrophoresis effect, and reduces the reverse thermal conductivity to 80W / m·K, thereby preventing heat backflow and further optimizing thermal management.

[0041] Specifically, the diameter of the liquid metal channel 13 is 50-100 μm, with an adjustable porosity of 30%-50%. The filling rate of the liquid metal within the channel is adjusted by the magnetic field strength: when heat dissipation needs to be enhanced, a 100 mT magnetic field is applied to completely fill the channel with liquid metal, increasing the thermal conductivity from 150 W / m·K to 320 W / m·K. When heat preservation is required, the magnetic field is reduced to 0 mT, causing the liquid metal to shrink into beads due to surface tension, and the thermal conductivity drops to 80 W / m·K. The magnetic field changes can dynamically adjust the thermal resistance within a range of 0.01-0.05 K·m / W, with a response time of less than 50 ms.

[0042] Furthermore, a plurality of nanochannel layers 11 are provided inside the thermal rectifying layer 10, and the plurality of nanochannel layers 11 are all prepared by photolithography technology, with a vertical nanochannel array with a diameter of 5-10 nm and a channel density of 10^9 / cm 2; The inner wall of each nanochannel layer 11 is modified with a negatively charged polyelectrolyte to form a nanoscale ion screening interface; a graphene electrode grid is also embedded under the nanochannel layer 11. The thickness of the graphene electrode grid is 100nm, the electrode spacing is 50μm, and it is connected to an external pulse power supply through a flexible wire to apply an alternating electric field of 0-10V.

[0043] It should be noted that the direction of heat flow is regulated by the dielectrophoresis effect. The forward heat flow is from the reaction chamber 2 to the heat-conducting skeleton 3. When a 5V, 50kHz alternating electric field is applied, the hydrated ions in the nanochannel gather toward one end of the channel under the action of the dielectrophoretic force, forming an ion concentration gradient. This gradient enhances the directional transport of hot carriers through the "ion drag effect", increasing the thermal conductivity from 150W / m·K to 220W / m·K, and the heat flow conduction efficiency is improved by 47%. The reverse thermal resistance is the heat backflow from the heat-conducting skeleton 3 to the reaction chamber 2. When the electric field is turned off or the reverse voltage is applied, the ions are evenly distributed, forming a "thermal diode" effect in the nanochannel, and the reverse thermal conductivity drops to 80W / m·K, preventing the ambient heat from flowing back into the reaction chamber. In a low-temperature environment of -20°C, it can reduce heat loss by 35%.

[0044] It should be further explained that the thermal rectifying layer 10 is formed by growing a 100 nm thick aluminum oxide insulating layer on the surface of the thermally conductive skeleton 3 using atomic layer deposition technology, and then constructing a nano-channel layer 11 array by electron beam lithography.

[0045] Furthermore, the interior of the transpiration heat dissipation layer 7 is respectively provided with a main vein-level channel 14, a branch vein-level micro-grooves 15 and a pore-level nanopore 16. The main vein-level channel 14 is located on the outside of the transpiration heat dissipation layer 7 and is prepared by 3D printing. The main vein-level channel 14 is a tree-like hollow channel. The bottom of the main vein-level channel 14 is provided with a plurality of channel branches, and the angle of the plurality of channel branches is 45°. The end of each channel branch is connected with a branch vein-level micro-grooves 15. The plurality of branch vein-level micro-grooves 15 are radial micro-grooves with a width of 100 μm and a depth of 50 μm, and the surfaces of the plurality of branch vein-level micro-grooves 15 are etched with 20 μm×20 μm rectangular bosses; the inner walls of the plurality of branch vein-level micro-grooves 15 are prepared with pore-level nanopores 16 by anodization, and the pore diameter of the plurality of pore-level nanopores 16 is 50 μm, and the pore density is 5×10^8 / cm 2 , hydrophilic polyethylene glycol segments are grafted into the pores; the interior of the main vein-level channel 14, the branch vein-level microgrooves 15 and the pore-level nanopores 16 are filled with an ethanol-water mixed working fluid, the volume ratio of the ethanol-water mixed working fluid is 1:3, the boiling point is 78°C, the heat of vaporization is 2400kJ / kg, and the saturated vapor pressure is 12kPa at 30°C, and the ends of several pore-level nanopores 16 are sealed by a PDMS membrane, and 5-10μm bionic pores are distributed on the PDMS membrane.

[0046] It should be noted that, through the above-mentioned structural design, the multi-level bionic porous network composed of the main vein-level channels 14, the branch vein-level micro-grooves 15 and the pore-level nanopores 16 of the transpiration heat dissipation layer 7, combined with the ethanol-water mixed working fluid filled inside, realizes efficient heat dissipation through phase change and transpiration at different temperatures, strengthens heat dissipation at high temperatures in conjunction with the thermal conductive skeleton, and reduces heat loss at low temperatures.

[0047] Furthermore, replaceable capsule bins 4 are integrated on the front and rear sides of the heating belt base 1, and each capsule bin 4 adopts a honeycomb storage tank made of flexible silicone material. Several capsule bins 4 are provided with a pH-responsive rupture membrane on one side close to the reaction chamber 2. The pH-responsive rupture membrane is prepared by electrospinning chitosan and sodium alginate in a 1:1 mass ratio, with a thickness of 50 μm and a swelling and rupture time of 15 minutes in a pH 4.5 buffer solution. When the pH value in the reaction chamber 2 drops below 4.5 due to the accumulation of metabolites, the rupture membrane dissolves and releases dormant microbial spores, and absorbs the microbial liquid inside the capsule bin 4 into the interior of the reaction chamber 2 through the first reaction membrane 8 and the second reaction membrane 9.

[0048] It should be noted that, through the above-mentioned structural design, the capsule compartment 4 integrated on the front and rear sides of the heating belt base 1 adopts a honeycomb storage tank made of flexible silicone material, and a pH-responsive rupture membrane is arranged inside. When the pH value in the reaction chamber 2 drops below 4.5 due to the accumulation of metabolic products, the rupture membrane dissolves and releases dormant microbial spores, which enter the interior of the reaction chamber 2 through the first reaction membrane 8 and the second reaction membrane 9, replenishing the microorganisms in time, maintaining the number and activity of the microbial population, and ensuring that the heating belt continuously and stably produces heat.

[0049] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0050] The present invention is not limited to the above optional embodiments. Anyone can derive various other forms of products based on the teachings of the present invention. The above specific embodiments should not be construed as limiting the scope of protection of the present invention. The scope of protection of the present invention shall be based on the scope defined in the claims, and the description can be used to interpret the claims.

Claims

1. A heating belt based on microbial reaction control, characterized in that: include: A heating belt substrate (1), wherein a shape memory polymer grid is provided on the surface of the heating belt substrate (1), and magnetostrictive microparticles are embedded at the grid nodes; The heating belt base (1) is provided with a plurality of reaction chambers (2), the plurality of reaction chambers (2) are located inside the heating belt base (1) and are evenly spaced from top to bottom, and a diffusion main channel (5) is provided between the upper and lower reaction chambers (2), the upper and lower sides of the inner wall of the diffusion main channel (5) are provided with a plurality of conduction microchannels (6), and one end of the upper and lower conduction microchannels (6) is respectively connected to the interior of the upper and lower reaction chambers (2); each reaction chamber (2) is provided with a first reaction diaphragm (8) and a second reaction diaphragm (9), and the first reaction diaphragm (8) is located inside the reaction chamber (2). The inner side is provided, and the second reaction diaphragm (9) is located on the outer side of the first reaction diaphragm (8); the outer side of each reaction chamber (2) is covered with a heat-conducting skeleton (3), and the inner side of the heat-conducting skeleton (3) is provided with a plurality of heat-rectifying layers (10), and the top of the heat-conducting skeleton (3) is also fixedly provided with a transpiration heat dissipation layer (7); the outer side of the reaction chamber (2) is provided with a heat-conducting connecting groove (17) matched with the plurality of heat-rectifying layers (10), one side of each heat-rectifying layer (10) is respectively inserted into the interior of each heat-conducting connecting groove (17), and one side of each heat-rectifying layer (10) is in contact with the outer side of the second reaction diaphragm (9).

2. A heating belt based on microbial reaction control according to claim 1, characterized in that: The shape memory polymer grid adopts a composite system of polycaprolactone and graphene nanosheets, with a glass transition temperature of 32°C and a melting temperature of 58°C. The magnetostrictive microparticles are fixed by wrapping the particles with PDMS elastomer and then embedding them into SMP grid nodes.

3. A heating belt based on microbial reaction control according to claim 1, characterized in that: The plurality of reaction chambers (2) all adopt a bionic honeycomb structure, and the inner walls of the diffusion main channel (5) and the conduction microchannel (6) are also loaded with nano-scale platinum catalysts, and the conduction microchannel (6) and the diffusion main channel (5) form an angle of 60 degrees.

4. A heating belt based on microbial reaction control according to claim 1, characterized in that: The first reaction membrane (8) is a porous nanofiber membrane with a pore size of 50-100 nm, and the porous nanofiber membrane is in direct contact with the microorganisms and metabolic products in the reaction chamber (2); the second reaction membrane (9) is a thermosensitive hydrogel membrane wrapped around the outside of the nanofiber membrane, forming the outermost boundary of the reaction chamber; one end of the conductive microchannel (6) is connected to the second reaction membrane (9) in the outer space of the reaction chamber (2).

5. The heating belt based on microbial reaction control according to claim 1, characterized in that: A plurality of liquid metal channels (13) are provided inside the heat-conducting skeleton (3), and the inner walls of the plurality of liquid metal channels (13) are coated with an iron oxide magnetic nanoparticle coating. Liquid metal is also provided inside the plurality of liquid metal channels (13). A flexible electromagnetic coil (12) is further provided inside the heat-conducting skeleton (3) and outside the plurality of liquid metal channels (13). The flexible electromagnetic coil (12) is wrapped inside the heat-conducting skeleton (3) in the form of a silver nanowire-elastomer composite film.

6. The heating belt based on microbial reaction control according to claim 1, characterized in that: A plurality of nanochannel layers (11) are provided inside the thermal rectifying layer (10), and the plurality of nanochannel layers (11) are all prepared using photolithography technology. The inner wall of each nanochannel layer (11) is modified with a negatively charged polyelectrolyte to form a nanoscale ion screening interface; and a graphene electrode grid is also embedded below the nanochannel layer (11).

7. The heating belt based on microbial reaction control according to claim 1, characterized in that: The interior of the transpiration heat dissipation layer (7) is respectively provided with a main vein-level channel (14), a branch vein-level micro-grooves (15) and a pore-level nanopore (16); the main vein-level channel (14) is located on the outside of the transpiration heat dissipation layer (7) and is prepared by 3D printing, and the main vein-level channel (14) is a tree-like hollow channel; the bottom of the main vein-level channel (14) is provided with a plurality of channel branches, and the angle of the plurality of channel branches is 45°; the end of each channel branch is connected to a branch vein-level micro-grooves (15); the inner walls of the plurality of branch vein-level micro-grooves (15) are prepared with pore-level nanopores (16) by anodization, and the pore diameter of the plurality of pore-level nanopores (16) is 50 μm.

8. A heating belt based on microbial reaction control according to claim 7, characterized in that: The interiors of the main vein-level channels (14), the branch vein-level micro-grooves (15) and the pore-level nanopores (16) are filled with an ethanol-water mixed working medium, the volume ratio of the ethanol-water mixed working medium being 1:3, and the ends of the pore-level nanopores (16) are all sealed by a PDMS membrane, on which 5-10 μm bionic pores are distributed.

9. The heating belt based on microbial reaction control according to claim 1, characterized in that: The front and rear sides of the heating belt base (1) are both integrated with replaceable capsule compartments (4), and each capsule compartment (4) is a honeycomb storage tank made of flexible silicone material. A pH-responsive rupture membrane is provided on one side of several capsule compartments (4) close to the reaction chamber (2).

10. A heating belt based on microbial reaction control according to claim 9, characterized in that: The pH-responsive rupture membrane is prepared by electrospinning chitosan and sodium alginate in a mass ratio of 1:1 to form a membrane with a thickness of 50 μm and a swelling and rupture time of 15 minutes in a pH 4.5 buffer solution.

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