A heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system

Abstract

The invention discloses a heat storage type gas stove tail gas waste heat pulsating heat pipe thermoelectric dual stove system, comprising a flue, a pulsating heat pipe thermoelectric medium temperature stove and a pulsating heat pipe tail gas high temperature stove; the pulsating heat pipe thermoelectric medium temperature stove comprises a medium temperature stove pulsating heat pipe evaporation end, a medium temperature stove pulsating heat pipe condensation end, a pulsating heat pipe magnetoelectric conversion component, a pulsating heat pipe insulation connection pipeline, a pulsating heat pipe insulation return pipeline, a square medium temperature heating plate and a low temperature heat storage medium; the pulsating heat pipe tail gas high temperature stove comprises a high ... pulsating heat pipe condensation end, a pulsating heat pipe magnetoelectric conversion component, a pulsating heat pipe insulation connection pipeline, a pulsating heat pipe insulation return pipeline, a square medium temperature heating plate and a low temperature heat storage medium. The invention comprises a generating end, a pulsating heat pipe condensing end of a high-temperature stove, a square high-temperature heating plate and a medium-temperature heat storage medium; wherein, a pulsating heat pipe magnetoelectric conversion component is provided in the pulsating heat pipe thermoelectric medium-temperature stove, which realizes the output of electric energy by converting thermal energy, kinetic energy, magnetic energy and electric energy; the present invention recovers and utilizes the waste heat of the gas stove exhaust by adopting a small and efficient L-shaped separated pulsating heat pipe, thereby realizing efficient recovery and transfer of heat, and the device has a simple structure, flexible layout, heat can be used at any time and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stove tail gas waste heat recovery and utilization, and in particular to a heat storage type gas stove tail gas waste heat pulsating heat pipe thermoelectric dual stove system. Background Art

[0002] Conventional commercial and residential gas stoves are compact in structure and have a small usable area on the stovetop, making it difficult to efficiently recover flue gas waste heat using conventional waste heat recovery equipment. Therefore, a small, high-efficiency heat transfer element—a pulsating heat pipe—is needed to efficiently recover and transfer flue gas waste heat without the need for a drive device.

[0003] Traditional circuit pulsating heat pipes have alternate hot and cold sections, with numerous insulated connecting pipes in between, making installation and sealing difficult. Therefore, a split pulsating heat pipe structure is proposed for the heat transfer element, with only two insulated connecting pipes between the evaporating and condensing ends. Furthermore, based on the needs of the heat user, the condensing end of the pulsating heat pipe is placed horizontally, while the evaporating end is arranged vertically. This ensures efficient heat transfer performance and facilitates the placement of cookware and heat utilization.

[0004] The present invention proposes to use phase change material as a heat storage medium to store and utilize the recovered exhaust gas heat, which not only solves the problem that the gas stove has a relatively fixed working period and the recovered heat cannot be fully utilized in a short time, but also extends the flexibility and timeliness of heat utilization.

[0005] The exhaust gas from gas stoves has a high temperature, which is directly converted into lower temperature thermal energy for utilization, greatly reducing the quality of flue gas waste heat recovery. The present invention utilizes the pressure difference between the hot and cold sections of the pulsating heat pipe to achieve thermoelectric conversion, thereby improving the utilization quality of flue gas waste heat. At the same time, the cold end of the pulsating heat pipe provides low-grade heat, realizing gradient utilization of energy quality. Summary of the Invention

[0006] The purpose of the present invention is to provide a heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system to solve the problem of gas stove waste heat recovery and utilization raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a heat storage type gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system, comprising a flue 1, a pulsating heat pipe thermoelectric medium temperature stove 100 and a pulsating heat pipe exhaust high temperature stove 1000; the pulsating heat pipe thermoelectric medium temperature stove 100 comprises a medium temperature stove pulsating heat pipe evaporation end 2, a medium temperature stove pulsating heat pipe condensation end 3, a pulsating heat pipe magnetoelectric conversion component 4, a heat pipe insulation connection pipe 5, a pulsating heat pipe insulation return pipe 6, a square medium temperature heating plate 7 and a low temperature heat storage medium 8; the pulsating heat pipe exhaust high temperature stove 1000 comprises a high temperature stove pulsating heat pipe evaporation end 10, a high temperature stove pulsating heat pipe condensation end 11, a square high temperature heating plate 12 and a medium temperature heat storage medium 13 The medium-temperature stove pulsating heat pipe evaporator end 2 and the high-temperature stove pulsating heat pipe evaporator end 10 are arranged vertically within the flue 1, while the medium-temperature stove pulsating heat pipe condenser end 3 and the high-temperature stove pulsating heat pipe condenser end 11 are arranged horizontally within two heating plates, respectively. The pulsating heat pipe magnetoelectric conversion component 4 is arranged on the pulsating heat pipe insulated connecting pipe 5 between the medium-temperature stove pulsating heat pipe evaporator end 2 and the medium-temperature stove pulsating heat pipe condenser end 3, and is located between the two heating plates. The medium-temperature stove pulsating heat pipe evaporator end 2 and the high-temperature stove pulsating heat pipe evaporator end 10 are used to recover heat from the flue gas. Through the self-excited motion of the working fluid within the heat pipe, the heat is transferred to the condenser end and stored in the heat storage medium. The pulsating heat pipe magnetoelectric conversion component 4 utilizes the pressure difference between the hot and cold ends of the pulsating heat pipe to convert thermal energy, kinetic energy, magnetic energy, and electrical energy, thereby obtaining high-quality electrical energy.

[0008] The flue 1 is a rectangular channel as a whole, made of high-temperature resistant metal material, with its inlet end connected to the exhaust outlet of the gas stove and the outlet end being a flue gas discharge port; a plurality of small-diameter circular holes are left on the upper surface of the flue 1 for leading out the pulsating heat pipe; the outer surface of the flue 1 is wrapped with thermal insulation material.

[0009] The medium-temperature stove pulsating heat pipe evaporation end 2, the pulsating heat pipe magneto-electric conversion component 4, the pulsating heat pipe insulated connecting pipe 5, the medium-temperature stove pulsating heat pipe condensation end 3 and the pulsating heat pipe insulated return pipe 6 are sequentially combined and connected; the vapor-liquid plug-shaped working medium oscillating in the pulsating heat pipe flows sequentially through the medium-temperature stove pulsating heat pipe evaporation end 2, the pulsating heat pipe magneto-electric conversion component 4, the pulsating heat pipe insulated connecting pipe 5, the medium-temperature stove pulsating heat pipe condensation end 3, the pulsating heat pipe insulated return pipe 6, and finally flows back to the medium-temperature stove pulsating heat pipe evaporation end 2, completing a one-way cycle pulsation.

[0010] The evaporation end 2 of the medium-temperature stove pulsating heat pipe is arranged vertically downward in the flue 1, and the arrangement direction is perpendicular to the direction of flue gas flow; a liquid filling port 15 is provided at the straight pipe section of the evaporation end 2 of the medium-temperature stove pulsating heat pipe; the condensation end 3 of the medium-temperature stove pulsating heat pipe is a medium-temperature heating component for the user, which is evenly laid in the square medium-temperature heating plate 7 and maintains an inclination angle of 5° to 15° with the horizontal plane; the condensation end 3 of the medium-temperature stove pulsating heat pipe is welded with a plurality of integrated transverse fins Ⅰ17; the condensation end 3 of the medium-temperature stove pulsating heat pipe with the transverse fins Ⅰ17 is tightly buried in the low-temperature heat storage medium 8.

[0011] The condensing end 3 of the pulsating heat pipe of the medium-temperature stove is placed horizontally with a small inclination angle, which is conducive to the backflow of the working medium in the condensing end of the pulsating heat pipe, ensuring the self-excited movement of the pulsating heat pipe and good heat release at the condensing end; the heat storage medium in the square medium-temperature heating plate 7 adopts a phase change material with a temperature of 60°C to 90°C, and the condensing end of the pulsating heat pipe is closely distributed along the square outline to form a medium-temperature heat zone, which can be used to keep hot water warm, warm milk, etc.; the condensing end of the pulsating heat pipe is welded with multiple transverse fins Ⅰ17, which increases the heat exchange area with the heat storage medium, strengthens the heat exchange between the condensing end of the pulsating heat pipe and the heat storage medium, and at the same time increases the temperature uniformity inside the square medium-temperature heating plate 7.

[0012] The pulsating heat pipe insulated return pipe 6 and the pulsating heat pipe insulated connecting pipe 5 are both equal-diameter capillary copper tubes and are bent into an inverted L shape; one end of the pulsating heat pipe insulated return pipe 6 is connected to the evaporating end 2 of the medium-temperature stove pulsating heat pipe, and the other end is connected to the condensing end 3 of the medium-temperature stove pulsating heat pipe; the outer wall of the pulsating heat pipe insulated return pipe 6 is wrapped with thermal insulation material; the pulsating heat pipe is an equal-diameter capillary copper tube and is bent into an inverted L shape; one end of the pulsating heat pipe insulated connecting pipe 5 is connected to the pulsating heat pipe magnetoelectric conversion component 4, and the other end is connected to the condensing end 3 of the medium-temperature stove pulsating heat pipe; the outer wall of the pulsating heat pipe insulated connecting pipe 5 is wrapped with thermal insulation material.

[0013] The pulsating heat pipe magneto-electric conversion component 4 includes a turbine cavity 20, a turbine 22, an arc-shaped magnetic sheet 23, a stator housing 24, a stator 25, a rectifier plate 26 and a top cover 27; the stator housing 24 is buckled and sealed with the turbine cavity 20 to form an intermediate cavity for placing the turbine 22; the pulsating heat pipe magneto-electric conversion component 4 is installed in the middle of the pulsating heat pipe loop and is an electric energy output component; the input pipe 29 on the side wall of the turbine cavity 20 is connected to the outlet of the pulsating heat pipe evaporation end 2 of the medium temperature stove, and the output pipe 33 on the side wall of the turbine cavity 20 is connected to the pulsating heat pipe insulation connection pipeline 5, and the turbine 22 is installed inside the turbine cavity 20; a plurality of the arc-shaped magnetic sheets 23 are connected along the turbine cavity 20. The turbine 22 is fixed on the inner wall surface of the turbine 22 at equal intervals in the circumferential direction. The rotation of the turbine 22 drives the rotation of multiple arc-shaped magnetic sheets 23 to generate a rotating interval magnetic field. The stator 25 is fixed on the outer side of the stator housing 24. The stator 25 is composed of a stator core 42 and multiple coil windings 43. The coil windings 43 in the stator 25 can sense the rotating interval magnetic field inside the turbine cavity 20. Due to the change in magnetic flux, an alternating current is generated, which is converted into a direct current output through the rectifier plate 26. One side of the top cover 27 is threadedly connected to the turbine cavity 20, and the other side is provided with a square hole 47. The wire 45 of the rectifier plate 26 is led out of the square hole 47 and connected to the battery 16.

[0014] The turbine cavity 20 is provided with a concave circular groove 30 at the center of the bottom surface, and a bearing 21 is provided in the concave circular groove 30 at the center of the bottom surface; an outer ring wall 32 and an inner ring wall 31 are provided on the turbine cavity 20, and the outer surface of the outer ring wall 32 is provided with an external thread 34; one side of the turbine cavity 20 is provided with the input pipe 29 and the output pipe 33 along the side wall section direction; the interior of the input pipe 29 is provided with a tapered reducer, and the nozzle top cone angle is between 10° and 12°; the turbine 22 is provided inside the turbine cavity 20, and the turbine 22 includes a turbine annular wall 35 with a bottom surface, rectangular blades 36 and rectangular slots 37; a plurality of rectangular blades 36 are connected to the outer side of the turbine annular wall 35 in the circumferential direction, and the rectangular blades 36 are arranged between Relatively dense; the rectangular blades 36 are spaced apart from the inner wall of the turbine cavity 20, and a plurality of rectangular slots 37 are uniformly and evenly spaced along the circumferential direction on the inner side of the turbine annular wall 35; a small-diameter shaft 38 is connected to the center of the outer wall surface of the bottom of the turbine 22, and is inserted into the bearing 21 in the recessed circular groove 30 in the center of the bottom surface of the turbine cavity 20; a plurality of arc-shaped magnetic sheets 23 are respectively inserted into the plurality of rectangular slots 37 on the inner side of the turbine annular wall 35, and the height of each arc-shaped magnetic sheet 23 is higher than that of the turbine annular wall 35; the turbine 22 and the plurality of arc-shaped magnetic sheets 23 together constitute a rotor, and the rotation of the turbine 22 drives the plurality of arc-shaped magnetic sheets 23 to rotate, thereby generating a rotating interval magnetic field.

[0015] The stator housing 24 is a cylindrical shell as a whole, and a deeply recessed cylindrical cavity is provided in the center of its upper surface. A central cylinder 39 is provided in the middle of the cylindrical cavity. Two small cylindrical protrusions 40 are provided in the shallow recess on the outer edge of the upper surface of the stator housing 24. An annular groove 41 is provided on the outer edge of the lower surface of the stator housing 24. The outer wall of the stator housing 24 is inserted between the inner annular wall 31 and the outer annular wall 32 of the turbine cavity 20. There is a certain gap between the annular groove 41 on the lower surface of the stator housing 24 and the inner annular wall 31 of the turbine cavity 20, and a sealing ring 28 is provided in the gap. The stator 25 is composed of a stator core 42 and a coil winding 43; the center of the stator core 42 is a hollow cylinder; the coil winding 43 is wound around the stator core by a plurality of copper wires; the stator core 42 is inserted into the central cylinder 39 of the stator housing 24 and fixed to the stator housing 24; the annular inner wall surface of the top cover 27 is provided with an internal thread 46, and the internal thread 46 below the top cover 27 is aligned with the external thread 34 of the outer ring wall 32 of the turbine chamber 20. The top cover 27 and the turbine chamber 20 are fastened together by a sealing ring 28; the two circular holes 44 at both ends of the axis of the rectifier plate 26 are correspondingly embedded in the two small cylindrical protrusions 40 on the upper surface of the stator housing 24; one end of each copper wire in the coil winding 43 of the stator 25 is connected to the rectifier plate 26, and the other ends are connected to each other; the square holes 47 on the upper surface of the top cover 27 lead out the wires 45 of the rectifier plate 26 and are connected to the battery 16.

[0016] This device adopts a structure in which spaced arc-shaped magnetic sheets 23 are arranged on the inner side of the turbine annular wall 35, so that the entire turbine rotating parts and the rotating spaced magnetic field formed are sealed in the closed intermediate cavity formed by the turbine cavity 20 and the stator housing 24, which is beneficial to the sealing of the pulsating heat pipe circulation loop; in addition, the spaced magnetic sheets inside the closed cavity rotate to generate an intermittent induced magnetic field, which acts on the coil winding 43 of the stator 25 outside the closed cavity through the stator housing 24 that does not isolate the magnetic field. The coil winding 43 of the stator 25 generates an alternating current due to the change in magnetic flux, thereby solving the sealing problem in the thermoelectric conversion process of the pulsating heat pipe loop.

[0017] The high-temperature stove pulsating heat pipe evaporation end 10 is formed by bending a plurality of capillary copper tubes with multiple elbows. Each of the high-temperature stove pulsating heat pipe evaporation ends 10 is arranged vertically downward in the flue 1, and the arrangement direction is parallel to the flue gas flow direction. A plurality of pulsating heat pipes are arranged along the width direction of the flue (1). As the flue gas flow rate changes, the number of pulsating heat pipe evaporation ends can be adjusted to an even number. The rear half of the straight pipe section of the high-temperature stove pulsating heat pipe evaporation end 10 is welded with a longitudinal membrane fin 19. The cross section of the fin is rectangular and the material is aluminum or copper with good thermal conductivity. Each straight pipe section of the high-temperature stove pulsating heat pipe evaporation end 10 is provided with a liquid filling port 15 and is connected to the corresponding high-temperature stove pulsating heat pipe condensation end 11. The high-temperature stove pulsating heat pipe condensation end 11 is made of A capillary copper tube with multiple elbows is bent; a plurality of integrated transverse fins II 18 are welded between the straight tube sections of the high-temperature stove pulsating heat pipe condensing end 11, and the cross-section of the fin is rectangular, and the material is aluminum or copper with good thermal conductivity; the high-temperature stove pulsating heat pipe condensing end 11 is arranged in two layers as a whole in the square high-temperature heating plate 12 above the stove top, and the two layers are evenly laid out in a circle by multiple high-temperature stove pulsating heat pipe condensing ends, wherein each high-temperature stove pulsating heat pipe condensing end is laid on a quarter of the circle and maintains an inclination angle of 5° to 15° with the horizontal plane; the high-temperature stove pulsating heat pipe condensing end 11 is connected to its corresponding high-temperature stove pulsating heat pipe evaporating end 10; the high-temperature stove pulsating heat pipe condensing end 11 with the transverse fins II 18 is tightly buried in the medium-temperature heat storage medium 13.

[0018] The arrangement of the pulsating heat pipe condensing end 11 of the high-temperature stove is the same as that of the pulsating heat pipe condensing end 3 of the medium-temperature stove, which also solves the problem of backflow of the working medium; the heat storage medium in the square high-temperature heating plate 12 adopts a phase change material with a temperature of 120°C to 150°C, and the pulsating heat pipe condensing end is closely distributed along the circular contour to form a high-temperature heating area, which can be used to place pots for boiling water, making soup, cooking noodles, etc.; in addition, the pulsating heat pipe condensing end is welded with multiple transverse fins II18, which increases the heat exchange area with the heat storage medium, strengthens the heat exchange between the pulsating heat pipe condensing end and the heat storage medium, and at the same time increases the temperature uniformity inside the square high-temperature heating plate 12.

[0019] The flue inlet is filled with high-temperature flue gas generated by the gas stove. As the flue gas flows through the evaporation end of the pulsating heat pipe, it exchanges heat with the working medium inside the pulsating heat pipe, and the flue gas temperature gradually decreases. However, the heat transfer performance of the evaporation end of the pulsating heat pipe in different flue temperature zones varies. The evaporation end of the pulsating heat pipe in the high-temperature flue gas zone may have a dry-up limit. The evaporation end of the pulsating heat pipe in the low-temperature flue gas zone has a low heat flux density, which will affect the startup of the pulsating heat pipe. Therefore, a finless structure and a thermoelectric conversion device are used in the high-temperature flue gas zone, and a fin structure is used in the evaporation end of the pulsating heat pipe in the low-temperature flue gas zone to increase the heat flux density and ensure the normal operation of the heat pipe. The fin structure is preferably a straight fin.

[0020] The square medium-temperature heating plate 7 is a flat rectangular parallelepiped as a whole; two small-diameter circular holes are provided on the side of the square medium-temperature heating plate 7 to facilitate the insertion of the pulsating heat pipe; a four-legged bracket 9 is provided on the upper surface of the flue 1 to support the square medium-temperature heating plate 7; the square medium-temperature heating plate 7 is filled with a low-temperature heat storage medium 8; the side walls and bottom surface of the square medium-temperature heating plate 7 are wrapped with thermal insulation materials.

[0021] The square high-temperature heating plate 12 is a flat rectangular parallelepiped as a whole, with a cylindrical cavity inside; a cross-shaped copper partition is installed along the center of the cylindrical cavity; a plurality of small-diameter circular holes are provided on the bottom surface of the square high-temperature heating plate 12 to facilitate the insertion of the pulsating heat pipe; the square high-temperature heating plate 12 is filled with a medium-temperature heat storage medium 13; the space between the inner wall and the outer wall of the cavity in the square high-temperature heating plate 12 is filled with thermal insulation material, and the bottom surface of the square high-temperature heating plate 12 is wrapped with thermal insulation material.

[0022] The square medium-temperature heating plate 7 is filled with a low-temperature heat storage medium 8 with a phase change temperature of 60°C to 90°C, and the cylindrical cavity in the square high-temperature heating plate 12 is filled with a medium-temperature heat storage medium 13 with a phase change temperature between 120°C and 150°C; the liquid filling port 15 is a short pipe with a small diameter, which is used to evacuate the interior of the pulsating heat pipe and fill it with a working medium; the interior of the pulsating heat pipe is evacuated and filled with a working medium; water, alcohol, ethanol-water or graphene aqueous solution can be selected as the working medium inside the pulsating heat pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention uses a small and efficient L-shaped separated pulsating heat pipe to recover and utilize the waste heat from the exhaust gas of the gas stove. This not only achieves efficient heat recovery and transfer, but also has a simple structure, easy installation, flexible layout, and low cost. The present invention cleverly utilizes the pressure difference between the hot and cold ends of the pulsating heat pipe and designs a pulsating heat pipe magnetoelectric conversion component between the hot and cold ends of the pulsating heat pipe to achieve the conversion of part of the heat into kinetic energy, magnetic energy, and electrical energy, thereby improving the energy quality of the exhaust waste heat utilization. The electrical energy can be stored in a battery to power small power appliances such as small fans and mobile phones.

[0025] The present invention uses a pulsating heat pipe to store the heat of the recovered flue gas in a heat storage medium in a timely manner, effectively separating the waste heat recovery time from the heat utilization time. The heat utilization time is not controlled by the waste heat recovery time, and different heat utilization requirements, such as heat preservation and heating, are achieved through heat storage media with different phase change temperatures.

[0026] The pulsating heat pipe evaporation end of the present invention adopts a finless structure and a finned (longitudinal mode fin) structure to ensure that the evaporation end operates in a better waste heat recovery heat flux density range; the pulsating heat pipe condensation end adopts dense transverse fins, which can greatly enhance the heat transfer performance with the heat storage medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the pulsating heat pipe structure of a medium-temperature stove of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the pulsating heat pipe portion of the high-temperature stove of the present invention;

[0030] Figure 4 This is the second structural diagram of the pulsating heat pipe portion of the high-temperature stove of the present invention;

[0031] Figure 5 This is a schematic diagram of the top plan distribution structure of the pulsating heat pipes of the high-temperature stove of the present invention;

[0032] Figure 6 This is a schematic structural diagram of the pulsating heat pipe magnetoelectric conversion component of the present invention;

[0033] Figure 7 This is a schematic diagram of the full cross-section structure of the pulsating heat pipe magnetoelectric conversion component of the present invention;

[0034] Figure 8 This is a schematic diagram of the turbine cavity structure from an oblique perspective of the present invention;

[0035] Figure 9 It is a schematic diagram of the partial cross-sectional structure of the turbine of the present invention;

[0036] Figure 10 It is a schematic diagram of the turbine oblique structure of the present invention;

[0037] Figure 11 This is a schematic diagram of the front view of the turbine structure of the present invention;

[0038] Figure 12 Schematic diagram of the structure of the arc-shaped magnetic sheet of the present invention;

[0039] Figure 13 This is a schematic diagram of the oblique structural view of the stator housing of the present invention;

[0040] Figure 14 This is a schematic diagram of the full cross-section structure of the stator housing of the present invention;

[0041] Figure 15 This is a schematic diagram of the stator structure from an oblique perspective of the present invention;

[0042] Figure 16 This is a schematic diagram of the oblique structure of the rectifier plate of the present invention;

[0043] Figure 17 This is a schematic diagram of the oblique structure of the top cover of the present invention;

[0044] Figure 18 This is a schematic diagram of the full cross-section structure of the top cover of the present invention;

[0045] Figure 19 This is a schematic structural diagram of a square medium-temperature heating plate according to the present invention;

[0046] Figure 20 This is a schematic structural diagram of a square high-temperature heating plate according to the present invention;

[0047] Figure 21 It is a schematic diagram of the four-legged bracket structure of the present invention.

[0048] In the figure: 1. Flue, 100. Pulsating heat pipe thermoelectric medium temperature stove; 1000. Pulsating heat pipe thermoelectric high temperature stove; 2. Pulsating heat pipe evaporation end of medium temperature stove; 3. Pulsating heat pipe condensation end of medium temperature stove; 4. Pulsating heat pipe magnetoelectric conversion component; 5. Pulsating heat pipe insulation connection pipe; 6. Pulsating heat pipe insulation return pipe; 7. Square medium temperature heating plate; 8. Low temperature heat storage medium; 9. Four corner brackets; 10. Pulsating heat pipe evaporation end of high temperature stove; 11. Pulsating heat pipe condensation end of high temperature stove; 12. Square high temperature heating plate; 13. Medium temperature heat storage medium; 15. Liquid filling port; 16. Battery; 17. Horizontal fin I; 18. Horizontal fin II; 19. Longitudinal Membrane fin; 20. Turbine cavity; 21. Bearing; 22. Turbine; 23. Arc-shaped magnetic sheet; 24. Stator housing; 25. Stator; 26. Rectifier plate; 27. Top cover; 28. Sealing ring; 29. Inlet pipe; 30. Concave circular groove in the center of the bottom surface; 31. Inner ring wall; 32. Outer ring wall; 33. Output pipe; 34. External thread; 35. Turbine ring wall; 36. Rectangular blade; 37. Rectangular slot; 38. Shaft; 39. Center cylinder; 40. Small cylindrical protrusion; 41. Annular groove; 42. Stator core; 43. Coil winding; 44. Circular hole; 45. Wire; 46. Internal thread; 47. Square hole. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0050] A heat storage type gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system, comprising a flue 1, a pulsating heat pipe thermoelectric medium temperature stove 100 and a pulsating heat pipe exhaust high temperature stove 1000; the pulsating heat pipe thermoelectric medium temperature stove 100 comprises a medium temperature stove pulsating heat pipe evaporation end 2, a medium temperature stove pulsating heat pipe condensation end 3, a pulsating heat pipe magnetoelectric conversion component 4, a heat pipe insulation connection pipe 5, a pulsating heat pipe insulation return pipe 6, a square medium temperature heating plate 7 and a low temperature heat storage medium 8; the pulsating heat pipe exhaust high temperature stove 1000 comprises a high temperature stove pulsating heat pipe evaporation end 10, a high temperature stove pulsating heat pipe condensation end 11, a square high temperature heating plate 12 and a medium temperature heat storage medium 13; the medium temperature stove pulsating heat pipe evaporation end 2 The heat generating end 2 and the high-temperature stove pulsating heat pipe evaporating end 10 are arranged vertically within the flue 1. The medium-temperature stove pulsating heat pipe condensing end 3 and the high-temperature stove pulsating heat pipe condensing end 11 are arranged horizontally within two heating plates, respectively. The pulsating heat pipe magnetoelectric conversion component 4 is arranged on the pulsating heat pipe insulated connecting pipe 5 between the medium-temperature stove pulsating heat pipe evaporating end 2 and the medium-temperature stove pulsating heat pipe condensing end 3, and is located between the two heating plates. The medium-temperature stove pulsating heat pipe evaporating end 2 and the high-temperature stove pulsating heat pipe evaporating end 10 are used to recover heat from the flue gas. Through the self-excited motion of the working fluid within the heat pipe, the heat is transferred to the condensing end and stored in the heat storage medium. The pulsating heat pipe magnetoelectric conversion component 4 utilizes the pressure difference between the hot and cold ends of the pulsating heat pipe to convert thermal energy, kinetic energy, magnetic energy, and electrical energy, thereby obtaining high-quality electrical energy.

[0051] The flue 1 is a rectangular channel as a whole, made of high-temperature resistant metal material, with its inlet end connected to the exhaust outlet of the gas stove and the outlet end being a flue gas discharge port; a plurality of small-diameter circular holes are left on the upper surface of the flue 1 for leading out the pulsating heat pipe; the outer surface of the flue 1 is wrapped with thermal insulation material.

[0052] The medium-temperature stove pulsating heat pipe evaporation end 2, the pulsating heat pipe magneto-electric conversion component 4, the pulsating heat pipe insulated connecting pipe 5, the medium-temperature stove pulsating heat pipe condensation end 3 and the pulsating heat pipe insulated return pipe 6 are sequentially combined and connected; the vapor-liquid plug-shaped working medium oscillating in the pulsating heat pipe flows sequentially through the medium-temperature stove pulsating heat pipe evaporation end 2, the pulsating heat pipe magneto-electric conversion component 4, the pulsating heat pipe insulated connecting pipe 5, the medium-temperature stove pulsating heat pipe condensation end 3, the pulsating heat pipe insulated return pipe 6, and finally flows back to the medium-temperature stove pulsating heat pipe evaporation end 2, completing a one-way cycle pulsation.

[0053] The evaporation end 2 of the medium-temperature stove pulsating heat pipe is arranged vertically downward in the flue 1, and the arrangement direction is perpendicular to the direction of flue gas flow; a liquid filling port 15 is provided at the straight pipe section of the evaporation end 2 of the medium-temperature stove pulsating heat pipe; the condensation end 3 of the medium-temperature stove pulsating heat pipe is a medium-temperature heating component of the user, which is evenly laid in the square medium-temperature heating plate 7 and maintains an inclination angle of 5° to 15° with the horizontal plane; the condensation end 3 of the medium-temperature stove pulsating heat pipe is welded with a plurality of integrated transverse fins Ⅰ17, the cross-section of the fin is rectangular, and the material is aluminum or copper with good thermal conductivity; the condensation end 3 of the medium-temperature stove pulsating heat pipe with the transverse fins Ⅰ17 is tightly buried in the low-temperature heat storage medium 8.

[0054] The pulsating heat pipe insulated return pipe 6 and the pulsating heat pipe insulated connecting pipe 5 are both equal-diameter capillary copper tubes and are bent into an inverted L shape; one end of the pulsating heat pipe insulated return pipe 6 is connected to the evaporating end 2 of the medium-temperature stove pulsating heat pipe, and the other end is connected to the condensing end 3 of the medium-temperature stove pulsating heat pipe; the outer wall of the pulsating heat pipe insulated return pipe 6 is wrapped with thermal insulation material; the pulsating heat pipe is an equal-diameter capillary copper tube and is bent into an inverted L shape; one end of the pulsating heat pipe insulated connecting pipe 5 is connected to the pulsating heat pipe magnetoelectric conversion component 4, and the other end is connected to the condensing end 3 of the medium-temperature stove pulsating heat pipe; the outer wall of the pulsating heat pipe insulated connecting pipe 5 is wrapped with thermal insulation material.

[0055] The pulsating heat pipe magneto-electric conversion component 4 includes a turbine cavity 20, a turbine 22, an arc-shaped magnetic sheet 23, a stator housing 24, a stator 25, a rectifier plate 26 and a top cover 27; the stator housing 24 is buckled and sealed with the turbine cavity 20 to form an intermediate cavity for placing the turbine 22; the pulsating heat pipe magneto-electric conversion component 4 is installed in the middle of the pulsating heat pipe loop and is an electric energy output component; the input pipe 29 on the side wall of the turbine cavity 20 is connected to the outlet of the pulsating heat pipe evaporation end 2 of the medium temperature stove, and the output pipe 33 on the side wall of the turbine cavity 20 is connected to the pulsating heat pipe insulation connection pipeline 5, and the turbine 22 is installed inside the turbine cavity 20; a plurality of the arc-shaped magnetic sheets 23 are connected along the turbine cavity 20. The turbine 22 is fixed on the inner wall surface of the turbine 22 at equal intervals in the circumferential direction. The rotation of the turbine 22 drives the rotation of multiple arc-shaped magnetic sheets 23 to generate a rotating interval magnetic field. The stator 25 is fixed on the outer side of the stator housing 24. The stator 25 is composed of a stator core 42 and multiple coil windings 43. The coil windings 43 in the stator 25 can sense the rotating interval magnetic field inside the turbine cavity 20. Due to the change in magnetic flux, an alternating current is generated, which is converted into a direct current output through the rectifier plate 26. One side of the top cover 27 is threadedly connected to the turbine cavity 20, and the other side is provided with a square hole 47. The wire 45 of the rectifier plate 26 is led out of the square hole 47 and connected to the battery 16.

[0056] The turbine cavity 20 is provided with a concave circular groove 30 at the center of the bottom surface, and a bearing 21 is provided in the concave circular groove 30 at the center of the bottom surface; an outer ring wall 32 and an inner ring wall 31 are provided on the turbine cavity 20, and the outer surface of the outer ring wall 32 is provided with an external thread 34; one side of the turbine cavity 20 is provided with the input pipe 29 and the output pipe 33 along the side wall section direction; the interior of the input pipe 29 is provided with a tapered reducer, and the nozzle top cone angle is between 10° and 12°; the turbine 22 is provided inside the turbine cavity 20, and the turbine 22 includes a turbine annular wall 35 with a bottom surface, rectangular blades 36 and rectangular slots 37; a plurality of rectangular blades 36 are connected to the outer side of the turbine annular wall 35 in the circumferential direction, and the rectangular blades 36 are arranged between Relatively dense; the rectangular blades 36 are spaced apart from the inner wall of the turbine cavity 20, and a plurality of rectangular slots 37 are uniformly and evenly spaced along the circumferential direction on the inner side of the turbine annular wall 35; a small-diameter shaft 38 is connected to the center of the outer wall surface of the bottom of the turbine 22, and is inserted into the bearing 21 in the recessed circular groove 30 in the center of the bottom surface of the turbine cavity 20; a plurality of arc-shaped magnetic sheets 23 are respectively inserted into the plurality of rectangular slots 37 on the inner side of the turbine annular wall 35, and the height of each arc-shaped magnetic sheet 23 is higher than that of the turbine annular wall 35; the turbine 22 and the plurality of arc-shaped magnetic sheets 23 together constitute a rotor, and the rotation of the turbine 22 drives the plurality of arc-shaped magnetic sheets 23 to rotate, thereby generating a rotating interval magnetic field.

[0057] The stator housing 24 is a cylindrical shell as a whole, and a deeply recessed cylindrical cavity is provided in the center of its upper surface. A central cylinder 39 is provided in the middle of the cylindrical cavity. Two small cylindrical protrusions 40 are provided in the shallow recess on the outer edge of the upper surface of the stator housing 24. An annular groove 41 is provided on the outer edge of the lower surface of the stator housing 24. The outer wall of the stator housing 24 is inserted between the inner annular wall 31 and the outer annular wall 32 of the turbine cavity 20. There is a certain gap between the annular groove 41 on the lower surface of the stator housing 24 and the inner annular wall 31 of the turbine cavity 20, and a sealing ring 28 is provided in the gap. The stator 25 is composed of a stator core 42 and a coil winding 43; the center of the stator core 42 is a hollow cylinder; the coil winding 43 is wound around the stator core by a plurality of copper wires; the stator core 42 is inserted into the central cylinder 39 of the stator housing 24 and fixed to the stator housing 24; the annular inner wall surface of the top cover 27 is provided with an internal thread 46, and the internal thread 46 below the top cover 27 is aligned with the external thread 34 of the outer ring wall 32 of the turbine chamber 20. The top cover 27 and the turbine chamber 20 are fastened together by a sealing ring 28; the two circular holes 44 at both ends of the axis of the rectifier plate 26 are correspondingly embedded in the two small cylindrical protrusions 40 on the upper surface of the stator housing 24; one end of each copper wire in the coil winding 43 of the stator 25 is connected to the rectifier plate 26, and the other ends are connected to each other; the square holes 47 on the upper surface of the top cover 27 lead out the wires 45 of the rectifier plate 26 and are connected to the battery 16.

[0058] The high-temperature stove pulsating heat pipe evaporation end 10 is formed by bending a plurality of capillary copper tubes with multiple bends. Each of the high-temperature stove pulsating heat pipe evaporation ends 10 is arranged vertically downward in the flue 1, and the arrangement direction is parallel to the flue gas flow direction. A plurality of pulsating heat pipes are arranged along the width direction of the flue (1). As the flue gas flow rate changes, the number of pulsating heat pipe evaporation ends can be adjusted to an even number. The rear half of the straight pipe section of the high-temperature stove pulsating heat pipe evaporation end 10 is welded with a longitudinal membrane fin 19. The cross section of the fin is rectangular and the material is aluminum or copper with good thermal conductivity. A liquid filling port 15 is provided at the straight pipe section of each of the pulsating heat pipe evaporation ends 10, and is connected to the corresponding high-temperature stove pulsating heat pipe condensation end 11. The high-temperature stove pulsating heat pipe condensation end 11 is formed by bending a plurality of capillary copper tubes with multiple bends. The capillary copper tube of the head is bent; a plurality of integrated transverse fins II 18 are welded between the straight tube sections of the high-temperature stove pulsating heat pipe condensing end 11, and the cross-section of the fin is rectangular, and the material is aluminum or copper with good thermal conductivity; the high-temperature stove pulsating heat pipe condensing end 11 is arranged in two layers as a whole in the square high-temperature heating plate 12 above the stove top, and the two layers are evenly laid out into a circle by a plurality of high-temperature stove pulsating heat pipe condensing ends, wherein each high-temperature stove pulsating heat pipe condensing end is laid on a quarter of the circle and maintains an inclination angle of 5° to 15° with the horizontal plane; the high-temperature stove pulsating heat pipe condensing end 11 is connected to the corresponding high-temperature stove pulsating heat pipe evaporating end 10; the high-temperature stove pulsating heat pipe condensing end 11 with the transverse fins II 18 is tightly buried in the medium-temperature heat storage medium 13.

[0059] The square medium-temperature heating plate 7 is a flat rectangular parallelepiped as a whole; two small-diameter circular holes are provided on the side of the square medium-temperature heating plate 7 to facilitate the insertion of the pulsating heat pipe; a four-legged bracket 9 is provided on the upper surface of the flue 1 to support the square medium-temperature heating plate 7; the square medium-temperature heating plate 7 is filled with a low-temperature heat storage medium 8; the side walls and bottom surface of the square medium-temperature heating plate 7 are wrapped with thermal insulation materials.

[0060] The square high-temperature heating plate 12 is a flat rectangular parallelepiped as a whole, with a cylindrical cavity inside; a cross-shaped copper partition is installed along the center of the cylindrical cavity; a plurality of small-diameter circular holes are provided on the bottom surface of the square high-temperature heating plate 12 to facilitate the insertion of the pulsating heat pipe; the square high-temperature heating plate 12 is filled with a medium-temperature heat storage medium 13; the space between the inner wall and the outer wall of the cavity in the square high-temperature heating plate 12 is filled with thermal insulation material, and the bottom surface of the square high-temperature heating plate 12 is wrapped with thermal insulation material.

[0061] The square medium-temperature heating plate 7 is filled with a low-temperature heat storage medium 8 with a phase change temperature of 60°C to 90°C, and the cylindrical cavity in the square high-temperature heating plate 12 is filled with a medium-temperature heat storage medium 13 with a phase change temperature between 120°C and 150°C; the liquid filling port 15 is a short pipe with a small diameter, which is used to evacuate the interior of the pulsating heat pipe and fill it with a working medium; the interior of the pulsating heat pipe is evacuated and filled with a working medium; water, alcohol, ethanol-water or graphene aqueous solution can be selected as the working medium inside the pulsating heat pipe.

[0062] Installation steps of a heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system:

[0063] S1: Assemble and connect the various parts of the pulsating heat pipe magnetoelectric conversion component 4; assemble and connect them in the order of the turbine cavity 20, the bearing 21, the turbine 22, the arc-shaped magnetic sheet 23, the stator housing 24, the stator 25, the rectifier plate 26 and the top cover 27. First, the turbine 22 is connected to the turbine cavity 20. The bearing 21 is placed in the central concave circular groove 30 of the bottom surface of the turbine cavity 20. Then, a small-diameter shaft 38 on the outer wall of the bottom of the turbine 22 is inserted into the central circular hole of the bearing 21. The outer bottom surface of the turbine 22 does not contact the inner bottom surface of the turbine cavity 20. The surface of the inner ring wall 31 of the turbine cavity 20 is spaced apart from the rectangular blades 36 of the turbine 22. The arc-shaped magnetic sheet 23 is connected to the turbine 22. The multiple arc-shaped magnetic sheets 23 are all placed with the N pole on the left. The S pole is on the right, and they are respectively installed in the plurality of rectangular slots 37 on the inner side of the turbine annular wall 35 of the turbine 22 along the circumferential direction. The arc-shaped magnetic piece 23 is tightly fitted with the inner side and the lower bottom surface of the turbine annular wall 35 with the bottom surface, and the height of the arc-shaped magnetic piece 23 is higher than the turbine annular wall 35; the connection between the stator housing 24 and the turbine cavity 20 is to place the sealing ring 28 in the annular groove 41 on the lower surface of the stator housing 24, and the annular groove 41 on the lower surface of the stator housing 24 is embedded in the turbine cavity through the sealing ring 28. In the inner ring wall 31 of the body 20, the lower part of the stator housing 24 does not contact the arc-shaped magnetic sheet 23; the connection between the stator 25 and the stator housing 24, the stator core 42 of the stator 25 is downwardly inserted into the central cylinder 39 of the stator housing 24, and is fixed to the upper surface of the stator housing 24; the connection between the rectifier plate 26 and the stator housing 24 and the stator 25, the circular holes 44 on both sides of the rectifier plate 26 are embedded in the two small cylindrical protrusions 40 on the upper surface of the stator housing 24, and the terminal of the multiple copper wires in the stator 25 They are all connected to the rectifier plate 26, and the other ends of the wires are connected together; finally, the top cover 27 is connected to the turbine chamber 20, and the sealing ring 28 is placed in the inner ring groove on the lower surface of the top cover 27. The internal thread 46 below the top cover 27 and the external thread 34 of the outer ring wall 32 of the turbine chamber 20 are fastened to the top cover 27 and the turbine chamber 20 through the sealing ring 28, and the wires 45 of the rectifier plate 26 are led out from the square hole 47 of the top cover 27, and the wires 45 are connected to the battery 16.

[0064] S2: Installation of the flue 1: The flue 1 is horizontally installed below the stove top, with one end of the flue 1 connected to the exhaust gas outlet pipe of the gas stove, and the other end of the flue 1 connected to the flue gas exhaust pipe.

[0065] S3: For the installation of the square medium-temperature heating plate 7 and the square high-temperature heating plate 12, the four-legged bracket 9 is placed on the upper surface of the flue 1, and the square medium-temperature heating plate 7 is placed on the four-legged bracket 9; the square high-temperature heating plate 12 is placed on the upper surface of the flue 1, and the heating surface heights of the square medium-temperature heating plate 7 and the square high-temperature heating plate 12 are kept consistent.

[0066] S4: For the installation of the pulsating heat pipe thermoelectric medium temperature stove, connect the medium temperature stove pulsating heat pipe evaporation end 2, the pulsating heat pipe magnetoelectric conversion component 4, the pulsating heat pipe insulation connection pipe 5, the medium temperature stove pulsating heat pipe condensation end 3, and the pulsating heat pipe insulation return pipe 6 in this order to ensure that each interface is sealed; the medium temperature stove pulsating heat pipe evaporation end 2 is placed vertically downward at the front end of the flue 1, and the arrangement direction is perpendicular to the flue gas flow direction and does not contact the inner surface of the flue 1. The outlet of the medium temperature stove pulsating heat pipe evaporation end 2 extends from the circular hole reserved on the upper surface of the flue 1; the medium temperature stove pulsating heat pipe condensation end 3 is placed horizontally as a whole in the square medium temperature heating plate 7, and the transverse fins of the medium temperature stove pulsating heat pipe condensation end 3 Ⅰ17 fits tightly with the inside of the square medium-temperature heating plate 7, and the inlet and outlet of the medium-temperature stove pulsating heat pipe condensing end 3 extend from the right side wall of the square medium-temperature heating plate 7; the outlet of the medium-temperature stove pulsating heat pipe evaporating end 2 is connected to the input pipe 29 in the pulsating heat pipe magnetoelectric conversion component 4, and the output pipe 33 in the pulsating heat pipe magnetoelectric conversion component 4 is connected to the lower end of the pulsating heat pipe insulated connecting pipe 5, and the upper end of the pulsating heat pipe insulated connecting pipe 5 is connected to the inlet of the medium-temperature stove pulsating heat pipe condensing end 3, and the outlet of the medium-temperature stove pulsating heat pipe condensing end 3 is connected to the upper end of the pulsating heat pipe insulated return pipe 6, and the lower end of the pulsating heat pipe insulated return pipe 6 is connected to the outlet of the medium-temperature stove pulsating heat pipe evaporating end 2, completing the installation of the pulsating heat pipe thermoelectric medium-temperature stove.

[0067] S5: For the installation of the pulsating heat pipe tail gas high temperature stove, the installation of the pulsating heat pipe evaporation end 10 of the high temperature stove is to place the pulsating heat pipe evaporation end 10 of the high temperature stove without fins in the middle of the flue 1 along the cross-sectional direction of the flue 1, and to be located at the lower rear of the pulsating heat pipe thermoelectric medium temperature stove 100, with the arrangement direction being the same as the flue gas flow direction and not in contact with the inner surface of the flue 1. Similarly, the pulsating heat pipe evaporation end 10 of the high temperature stove with fins is placed in sequence at the tail end of the flue 1, and the inlet and outlet of the pulsating heat pipe evaporation end 10 of the high temperature stove is They all extend out from multiple circular holes reserved on the upper surface of the flue 1; then the high-temperature stove pulsating heat pipe condensing end 11 is installed, and each of the high-temperature stove pulsating heat pipe condensing end 11 is horizontally placed in the cylindrical cavity in one-fourth of the square high-temperature heating plate 12, with a total of two layers. The transverse fins II 18 of the high-temperature stove pulsating heat pipe condensing end 11 fits tightly with the inside of the cylindrical cavity, and the inlet and outlet of the cylindrical cavity high-temperature stove pulsating heat pipe condensing end 11 both extend from the circular holes reserved at the bottom of the cylindrical cavity square high-temperature heating plate 12 and are connected to their corresponding evaporating ends.

[0068] S6: Each pulsating heat pipe is evacuated and filled with working fluid through the filling port 15 in the evaporation end 2 of the medium temperature stove pulsating heat pipe and the evaporation end 10 of the high temperature stove pulsating heat pipe.

[0069] S7: Fill the square medium-temperature heating plate 7 with the low-temperature heat storage medium 8, and fill the square high-temperature heating plate 12 with the medium-temperature heat storage medium 13. The condensing ends of the finned pulsating heat pipes are in close contact with the heat storage medium.

[0070] S8: Wrap the outer wall and bottom surface of the square medium-temperature heating plate 7 with thermal insulation material, fill the outer wall surface and inner wall surface of the cylindrical cavity in the square high-temperature heating plate 12 with thermal insulation material, and wrap the bottom surface of the square high-temperature heating plate 12 with thermal insulation material; in the pulsating heat pipe thermoelectric medium-temperature stove 100, wrap the outer walls of the pulsating heat pipe magnetoelectric conversion component 4, the pulsating heat pipe insulated connecting pipe 5 and the pulsating heat pipe insulated return pipe 6 with thermal insulation material respectively.

[0071] The working principle of a heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system:

[0072] The high-temperature exhaust gas of the gas stove enters the flue 1 and first flows through the evaporation end 2 of the pulsating heat pipe of the medium-temperature stove. The heat is transferred to the working medium in the evaporation end tube through convection outside the tube and heat conduction of the tube wall. The working medium evaporates and vaporizes, increases pressure and expands, forming a gas-liquid plug flow, flows out through the evaporation end, and flows into the turbine cavity 20 through the input pipe 29 in the pulsating heat pipe magnetoelectric conversion component 4. Because the input pipe 29 is a tapered pipe, it can accelerate the working medium and drive the rectangular blades 36 outside the annular wall 35 of the turbine 22 to move, realizing the turbine 22 The rotor 22 rotates, and the arc-shaped magnetic sheet 23 fixed on the inner wall of the turbine 22 moves accordingly, forming an intermittent rotating magnetic field, and the working medium after work flows out through the output pipe 33 of the turbine cavity 20 along the original direction; one side of the stator housing 24 is tightly connected and sealed to the turbine cavity 20 to form an intermediate cavity structure, and the intermediate cavity realizes the fixed direction rotation of the turbine 22 and good sealing; the other side of the stator housing 24 is equipped with a stator 25, and a plurality of coil windings 43 are fixed on the stator 25. The stator 25 is stationary, but can sense the alternating magnetic field inside the turbine cavity 20 through the stator housing 24. Because the magnetic flux flowing through each coil winding 43 changes, an alternating current is generated inside the coil winding 43. The terminal ends of the plurality of coil windings 43 are all connected to the rectifier plate 26. The alternating current in the circuit is rectified and converted into direct current output, realizing the conversion of thermal energy into kinetic energy, magnetic energy and electrical energy, and improving the quality of energy utilization; it flows out from the output pipe 33 of the turbine cavity 20 The cooled and depressurized working medium flows into the condensing end 3 of the medium-temperature stove pulsating heat pipe arranged in the square medium-temperature heating plate 7, and condenses and releases heat to the low-temperature heat storage medium 8 with a phase change temperature of 60°C to 90°C around it, causing the heat storage medium to heat and phase change, and heat and keep warm milk, hot water, food, etc. through the upper surface of the square medium-temperature heating plate 7. After releasing heat, the working medium in the condensing end pipe passes through the pulsating heat pipe adiabatic return pipe 6 and flows back to the evaporating end 2 of the medium-temperature stove pulsating heat pipe, completing the unidirectional circulation pulsation of the working medium.

[0073] The flue gas flowing out of the flue 1 at the bottom of the pulsating heat pipe thermoelectric medium-temperature stove enters the evaporator end 10 of the high-temperature stove pulsating heat pipe, transferring heat to the working medium in the evaporator end tube. The working medium evaporates and vaporizes to form self-excited motion and flows into the condenser end 11 of the high-temperature stove pulsating heat pipe arranged in the square high-temperature heating plate 12. The working medium passes through the tube wall and extended fins to the medium-temperature heat storage medium 13 with a phase change temperature of 120°C to 150°C, realizing heat storage. The working medium is then transferred to the upper surface of the square high-temperature heating plate 12 to complete heating functions such as boiling water, cooking noodles, and making soup. After releasing heat, the working medium in the condenser end tube condenses and liquefies and flows back to the evaporator end 10 of the pulsating heat pipe of the high-temperature stove, completing the unidirectional circulation pulsation of the working medium.

[0074] 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 to the above embodiments. The above embodiments and descriptions are merely preferred examples of the invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the novel spirit and scope of the present invention. Such changes and improvements fall within the scope of the invention claimed. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system, characterized in that: The invention comprises a flue (1), a pulsating heat pipe thermoelectric medium temperature stove (100) and a pulsating heat pipe tail gas high temperature stove (1000); the pulsating heat pipe thermoelectric medium temperature stove (100) comprises a medium temperature stove pulsating heat pipe evaporation end (2), a medium temperature stove pulsating heat pipe condensation end (3), a pulsating heat pipe magnetoelectric conversion component (4), a pulsating heat pipe insulation connection pipe (5), a pulsating heat pipe insulation return pipe (6), a square medium temperature heating plate (7) and a low temperature heat storage medium (8); the pulsating heat pipe tail gas high temperature stove (1000) comprises a high temperature stove pulsating heat pipe evaporation end (10), a high temperature stove pulsating heat pipe condensation end (11), a square high temperature heating plate (12) and a medium temperature heat storage medium (13); the medium temperature stove pulsating heat pipe evaporation end (2) and the high temperature stove pulsating heat pipe evaporation end ( 10) is vertically arranged in the flue (1), the medium-temperature stove pulsating heat pipe condensing end (3) and the high-temperature stove pulsating heat pipe condensing end (11) are respectively arranged horizontally in two heating plates; the pulsating heat pipe magnetoelectric conversion component (4) is arranged on the pulsating heat pipe insulation connecting pipe (5) between the medium-temperature stove pulsating heat pipe evaporating end (2) and the medium-temperature stove pulsating heat pipe condensing end (3); the medium-temperature stove pulsating heat pipe evaporating end (2), the pulsating heat pipe magnetoelectric conversion component (4), the pulsating heat pipe insulation connecting pipe (5), the medium-temperature stove pulsating heat pipe condensing end (3) and the pulsating heat pipe insulation return pipe (6) are sequentially combined and connected; the medium-temperature stove pulsating heat pipe evaporating end (2) is vertically arranged downward in the flue (1 ) in the middle temperature stove, and the arrangement direction is perpendicular to the direction of flue gas flow; a liquid filling port (15) is provided at the straight pipe section of the evaporation end (2) of the medium temperature stove pulsating heat pipe; the condensation end (3) of the medium temperature stove pulsating heat pipe is evenly laid in the square medium temperature heating plate (7) and maintains an inclination angle of 5° to 15° with the horizontal plane; the condensation end (3) of the medium temperature stove pulsating heat pipe is welded with a plurality of integrated transverse fins I (17); the condensation end (3) of the medium temperature stove pulsating heat pipe with the transverse fins I (17) is tightly buried in the low temperature heat storage medium (8); the pulsating heat pipe insulation return pipe (6) and the pulsating heat pipe insulation connecting pipe (5) are both equal diameter capillary copper tubes and are bent into an inverted L shape; one end of the pulsating heat pipe insulation return pipe (6) is connected to the middle temperature stove pulsating heat pipe. The pulsating heat pipe evaporating end (2) of the high-temperature stove is connected to the pulsating heat pipe condensing end (3) of the medium-temperature stove at the other end; the pulsating heat pipe insulation connecting pipe (5) is connected to the pulsating heat pipe magnetoelectric conversion component (4) at one end and connected to the pulsating heat pipe condensing end (3) of the medium-temperature stove at the other end; the pulsating heat pipe magnetoelectric conversion component (4) comprises a turbine cavity (20), a turbine (22), an arc-shaped magnetic sheet (23), a stator housing (24), a stator (25), a rectifier plate (26) and a top cover (27); one side of the top cover (27) is threadedly connected to the turbine cavity (20), and the other side is provided with a square hole (47); the electric wire (45) of the rectifier plate (26) is led out of the square hole (47) and connected to the battery (16).

2. A thermal storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 1, characterized in that: The stator housing (24) is interlocked with and sealed to the turbine cavity (20) to form an intermediate cavity for accommodating the turbine (22); the input pipe (29) on the side wall of the turbine cavity (20) is connected to the outlet of the evaporation end (2) of the medium-temperature stove pulsating heat pipe, and the output pipe (33) on the side wall of the turbine cavity (20) is connected to the pulsating heat pipe insulation connection pipe (5), and the turbine (22) is installed inside the turbine cavity (20); a plurality of arc-shaped magnetic sheets (23) are fixed to the turbine (22) at equal intervals along the circumferential direction. 22) On the inner wall surface of the circumference, the turbine (22) rotates to drive multiple arc-shaped magnetic sheets (23) to rotate, generating a rotating interval magnetic field; the stator (25) is fixed on the outer side of the stator housing (24); the stator (25) is composed of a stator core (42) and multiple coil windings (43), and the coil windings (43) in the stator (25) can sense the rotating interval magnetic field inside the turbine cavity (20), and due to the change of magnetic flux, an alternating current is generated, which is converted into a direct current output through the rectifier plate (26).

3. The heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 2, characterized in that: The turbine cavity (20) is provided with a bottom center recessed circular groove (30), and a bearing (21) is provided in the bottom center recessed circular groove (30); the turbine cavity (20) is provided with an outer ring wall (32) and an inner ring wall (31), and the outer surface of the outer ring wall (32) is provided with an external thread (34); one side of the turbine cavity (20) is provided with the input pipe (29) and the output pipe (33) along the side wall section direction; the input pipe (29) is provided with a tapered reducer, and the nozzle top cone angle is between 10° and 12°; the turbine cavity (20) is provided with a turbine (22) inside, and the turbine (22) includes a turbine annular wall (35) with a bottom surface, rectangular blades (36) and rectangular slots (37); the outer side of the turbine annular wall (35) is connected to a plurality of rectangular blades (36) along the circumferential direction, and the rectangular blades (33) are connected to the outer side of the turbine annular wall (35). 6) are arranged relatively densely; a distance is left between the rectangular blades (36) and the inner wall of the turbine cavity (20), and a plurality of rectangular slots (37) are uniformly and evenly spaced along the circumferential direction on the inner side of the turbine annular wall (35); a small-diameter shaft (38) is connected to the center of the outer wall surface of the bottom of the turbine (22), and is inserted into the bearing (21) in the concave circular groove (30) at the center of the bottom surface of the turbine cavity (20); a plurality of arc-shaped magnetic sheets (23) are respectively inserted into the plurality of rectangular slots (37) on the inner side of the turbine annular wall (35), and the height of each arc-shaped magnetic sheet (23) is higher than that of the turbine annular wall (35); the turbine (22) and the plurality of arc-shaped magnetic sheets (23) together constitute a rotor, and the rotation of the turbine (22) drives the plurality of arc-shaped magnetic sheets (23) to rotate, thereby generating a rotating interval magnetic field.

4. A thermal storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 3, characterized in that: The stator housing (24) is a cylindrical shell as a whole, and a cylindrical cavity with a deep depression is provided in the center of its upper surface, and a central cylinder (39) is provided in the middle of the cylindrical cavity. Two small cylindrical protrusions (40) are provided in the shallow depression of the outer edge of the upper surface of the stator housing (24). An annular groove (41) is provided on the outer edge of the lower surface of the stator housing (24). The outer wall of the stator housing (24) is inserted between the inner ring wall (31) and the outer ring wall (32) of the turbine cavity (20). There is a certain gap between the annular groove (41) on the lower surface of the stator housing (24) and the inner ring wall (31) of the turbine cavity (20), and a sealing ring (28) is provided in the gap. The stator (25) is composed of a stator core (42) and a coil winding (43); the center of the stator core (42) is a hollow cylinder; the coil winding (43) is wound around the stator core by a plurality of copper wires; the stator core (42) is inserted into the central cylinder (39) of the stator housing (24) and fixed to the stator housing (24); the annular inner wall surface of the top cover (27) is provided with an internal thread (46), and the internal thread (46) below the top cover (27) is in contact with the external thread (34) of the outer annular wall (32) of the turbine cavity (20). ) The top cover (27) and the turbine chamber (20) are fastened together by a sealing ring (28); the two circular holes (44) at both ends of the axis of the rectifier plate (26) are correspondingly embedded in the two small cylindrical protrusions (40) on the upper surface of the stator housing (24); one end of each copper wire in the coil winding (43) of the stator (25) is connected to the rectifier plate (26), and the other ends are connected to each other; the square small hole (47) on the upper surface of the top cover (27) leads out the wire (45) of the rectifier plate (26) and is connected to the battery (16).

5. The heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 1, characterized in that: The high-temperature stove pulsating heat pipe evaporation end (10) is formed by bending a plurality of capillary copper tubes with multiple elbows. Each of the high-temperature stove pulsating heat pipe evaporation ends (10) is vertically arranged downward in the flue (1), and the arrangement direction is parallel to the flue gas flow direction. The straight tube section of the rear half of the high-temperature stove pulsating heat pipe evaporation end (10) is welded with an integral longitudinal membrane fin (19). The straight tube section of each of the pulsating heat pipe evaporation ends (10) is provided with a liquid filling port (15) and is connected to the corresponding high-temperature stove pulsating heat pipe condensation end (11). The high-temperature stove pulsating heat pipe condensation end (11) is formed by bending a plurality of capillary copper tubes with multiple elbows. The high-temperature stove pulsating heat pipe condensation end ( 11) are welded with a plurality of integrally connected transverse fins II (18); the high-temperature stove pulsating heat pipe condensing end (11) is arranged in two layers in the square high-temperature heating plate (12) above the stove top, and the two layers are evenly laid out in a circle by a plurality of high-temperature stove pulsating heat pipe condensing ends, wherein each high-temperature stove pulsating heat pipe condensing end is laid on a quarter of the circle and maintains an inclination angle of 5° to 15° with the horizontal plane; the high-temperature stove pulsating heat pipe condensing end (11) is connected to its corresponding high-temperature stove pulsating heat pipe evaporating end (10); the high-temperature stove pulsating heat pipe condensing end (11) with the transverse fins II (18) is tightly buried in the medium-temperature heat storage medium (13).

6. The heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 1, characterized in that: The square medium-temperature heating plate (7) is a flat rectangular parallelepiped as a whole; two small-diameter circular holes are provided on the side of the square medium-temperature heating plate (7) to facilitate the insertion of the pulsating heat pipe; a four-legged bracket (9) is provided on the upper surface of the flue (1) for supporting the square medium-temperature heating plate (7); and the square medium-temperature heating plate (7) is filled with a low-temperature heat storage medium (8).

7. The heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 1, characterized in that: The square high-temperature heating plate (12) is a flat rectangular parallelepiped as a whole, and a cylindrical cavity is provided inside; a cross-shaped copper partition plate is installed along the center of the cylindrical cavity; a plurality of small-diameter circular holes are provided on the bottom surface of the square high-temperature heating plate (12) to facilitate the insertion of the pulsating heat pipe; the square high-temperature heating plate (12) is filled with a medium-temperature heat storage medium (13).

8. The heat storage gas stove exhaust waste heat pulsating heat pipe thermoelectric dual stove system according to claim 1, characterized in that: The square medium-temperature heating plate (7) is filled with a low-temperature heat storage medium (8) with a phase change temperature of 60°C to 90°C, and the cylindrical cavity in the square high-temperature heating plate (12) is filled with a medium-temperature heat storage medium (13) with a phase change temperature of 120°C to 150°C; the filling port (15) is a short pipe with a small diameter, which is used to evacuate the interior of the pulsating heat pipe and fill it with a working medium; water, alcohol, ethanol-water or graphene aqueous solution can be selected as the working medium in the pulsating heat pipe.

Images