Portable heat preservation and storage device for converting wind power photovoltaic electric energy into heat energy

Abstract

The invention provides a portable heat preservation and storage device for converting wind power and photovoltaic electric energy into heat energy, and belongs to the field of heat storage and energy storage, the portable heat preservation and storage device comprises an inner cylinder (8), a heating furnace (9), an outer cylinder (11) and phase change heat storage metal (15), and has the beneficial effects that continuous or discontinuous electric energy is input into the heating furnace to heat the phase change heat storage metal in the inner cylinder, and heat preservation is achieved under the action of a heat preservation material; when the heat accumulator is used, the heat preservation material is taken out, the heat taking rod is inserted, and then the heat exchange device and the cooling fins are connected to the end face of the large section of the heat taking rod, so that heat can be released. Therefore, the efficiency is higher than that of energy conversion, and the heating device is suitable for food heating, industrial low-temperature heating and agricultural greenhouse heating.

Description

Technical Field

[0001] The present invention belongs to the category of heat storage and energy storage that stores electric heating heat and directly outputs heat, and has the characteristics of being portable. It is applicable to melting low-melting-point metals with grid electric energy for heat preservation and heat storage, and is particularly applicable to melting low-melting-point metals with intermittent electric energy from wind power, photovoltaic power, and wave energy power generation for heat preservation and heat storage, and then outputting heat for food heating, low-temperature industrial heating, and greenhouse heating in agriculture. Specifically, it relates to a portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy. Background Art

[0002] According to statistics from the National Energy Administration, as of March 2025, the cumulative installed capacity of wind power and photovoltaic power will be 1.482 billion kilowatts, surpassing thermal power (1.451 billion kilowatts) for the first time, accounting for 33.6% of the total installed capacity; most of the power generated by centralized wind power and photovoltaic power stations is directly transmitted to the power grid, but the actual consumption ratio is limited by the system regulation capacity; in the first quarter of 2025, the total power generation of wind and solar power in the country was 536.4 billion kilowatt-hours, accounting for 22.5% of the total social electricity consumption, but the specific proportion of transmission to the power grid was not disclosed; in January 2025, the National Energy Administration issued the "Management Measures for the Development and Construction of Distributed Photovoltaic Power Generation", which clearly required the use of "self-generation and self-use of surplus power" General commercial and industrial distributed photovoltaic power generation in the "grid-connected" mode must meet the annual self-generated and self-consumed electricity ratio set by the provincial energy authorities; 13 provinces have issued detailed rules, with the ratio requirements concentrated between 20% and 90%, of which 9 provinces, including Shandong, Shanxi, and Liaoning, require no less than 50%; historical data show that due to transmission bottlenecks and insufficient flexibility resources, the wind and solar power abandonment rate in the northwest region has reached more than 10%, which has been reduced to about 5% in recent years through UHV and energy storage, but local problems still exist; the current technical bottleneck lies not only in the loss of transmission, but also in the instability of photovoltaic and wind power generation; electricity with insufficient voltage cannot be input into the grid and used locally It is a brand-new solution. Photovoltaic and wind power are unstable, and the power may not be sufficient. If they can stably output high-power heat according to requirements after heat storage, they will have great application value. In order to convert this part of waste electricity into heat energy for direct use, an electric-thermal heat storage and output heat device is proposed. After receiving intermittent or continuous power input, the electric heating device heats the metal in the container to undergo phase change and store heat, effectively reducing the weight of the heat accumulator and the highest stable temperature. When outputting heat energy through the heat transfer rod above the container, the heat output power can be effectively controlled, which is practical while storing energy. If these wind power and photovoltaic power are used to heat food, Moreover, three meals a day are basic needs. After electric energy is converted into heat energy and then transmitted to food, it is more efficient than electric energy to the battery and then to the electric heater. This is suitable for highway service areas with solar power generation or wind power generation, herdsmen's tents, islands, mountains, construction sites and ships for heating food after heat storage. The unstable electric energy is randomly stored and output stably in the form of heat. The power grid can also be used to heat metal for phase change heat storage and then use it. For example, it can be used in portable heat storage devices for cars to heat food while camping. It can also be used in industry for heating such as injection molding and in agriculture for heating in greenhouses. It has high safety and environmental protection. Summary of the invention

[0003] The object of the present invention is to provide a portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy to solve the problems raised in the above-mentioned background technology. To achieve the above object, the present invention provides the following technical solution: A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy, which comprises an inner cylinder, a heating furnace, an outer cylinder) and a phase change heat storage metal. The inner cavity of the outer cylinder houses and installs the heating furnace and the inner cylinder. The outer wall of the outer cylinder has a power cord through hole for the outer cylinder. The upper part of the outer cylinder has an outer upper end cover, and the outer upper end cover has an outer upper end cover extension hole and a compensation air pipe through hole for the outer upper end cover. The upper part of the inner cylinder has an inner upper end cover, and the inner cylinder is filled with a phase change heat storage metal. The inner upper end cover has an inner upper end cover extension hole, a compensation air pipe through hole for the inner upper end cover and an inner extension cylinder of the inner upper end cover. The inner extension cylinder of the inner upper end cover contacts the internal phase change heat storage metal. There is a heat preservation layer between the outer cylinder, the inside of the outer upper end cover and the upper end face, the outer circumferential surface outside of the inner cylinder, the periphery and the bottom outside of the heating furnace. The heat preservation layer has heat preservation layer holes and heat preservation layer ventilation holes. The heating furnace has heating wires. The compensation air pipe through hole for the outer upper end cover, the compensation air pipe through hole for the inner upper end cover and the heat preservation layer ventilation holes are communicated. The phase change heat storage metal is heated by the heating furnace, absorbs electric heat at the melting point temperature of the metal and stabilizes. The melted phase change heat storage metal absorbs a lot of heat, and this part of energy is stored in the heat preservation and heat storage device through the heat preservation layer. When storing heat and heat preservation, the heat preservation layer holes are blocked with heat preservation materials.

[0004] As an optimization, a small section of the heat extraction rod is installed inside the inner extension cylinder of the inner upper end cover in a matching manner. The lower end face of the small section of the heat extraction rod contacts and installs the inner bottom surface of the inner extension cylinder of the inner upper end cover. The large section of the heat extraction rod of the heat extraction rod is installed in the heat preservation layer hole. The large section of the heat extraction rod extends out of the outer upper end cover extension hole. There is a stepped end face of the heat extraction rod between the large section of the heat extraction rod and the small section of the heat extraction rod. The stepped end face of the heat extraction rod is above the upper end face of the inner upper end cover, ensuring that the lower end face of the small section of the heat extraction rod contacts the inner bottom surface of the inner extension cylinder of the inner upper end cover when the temperature changes.

[0005] As an optimization, the heat preservation layer between the outer upper end cover and the inner upper end cover has a thickness dimension of the heat preservation layer between the outer and inner upper end covers, and the range of the thickness dimension of the heat preservation layer between the outer and inner upper end covers is 15 mm - 100 mm. The inner cylinder has a height dimension of the heat preservation layer between the inner and outer cylinders, and the range of the height dimension of the heat preservation layer between the inner and outer cylinders is 20 mm - 300 mm. The distance dimension between the upper end face of the heating furnace and the bottom surface of the inner cylinder ranges from 20 mm to 80 mm. The diameter dimension of the inner cylinder ranges from 80 mm to 500 mm. The diameter dimension of the heat preservation layer extension hole of the heat preservation layer hole ranges from 20 mm to 180 mm. The diameter dimension of the inner upper end cover extension hole of the inner extension cylinder of the inner upper end cover ranges from 10 mm to 120 mm. The height dimension of the inner upper end cover extension hole of the inner extension cylinder of the inner upper end cover ranges from 10 mm to 160 mm. The diameter dimension of the heating furnace ranges from 80 mm to 500 mm.

[0006] As an optimization, the small section of the heat extraction rod has a heat-conducting outer cylinder, an intermediate heat-conducting cylinder, and a heat-conducting inner cylinder. The large section of the heat extraction rod has a height adjustment hole, and a height adjustment rod is installed in the height adjustment hole. A movable heat-conducting outer cylinder is coaxially installed in the space between the heat-conducting outer cylinder and the intermediate heat-conducting cylinder. A movable heat-conducting intermediate cylinder is coaxially installed in the space between the intermediate heat-conducting cylinders. A movable heat-conducting inner cylinder is coaxially installed in the space between the intermediate heat-conducting cylinder and the heat-conducting inner cylinder. The adjusting rod support structure provides rotational support for the height adjustment rod. The height adjustment rod has an outer adjustment groove, an intermediate adjustment groove, and an inner adjustment groove. When the movable heat-conducting outer cylinder, the movable heat-conducting intermediate cylinder, and the movable heat-conducting inner cylinder all contact the inner bottom surface of the inner extension cylinder of the inner upper end cover, the heat conduction power of the heat extraction rod is the largest. When the movable heat-conducting outer cylinder, the movable heat-conducting intermediate cylinder, and the movable heat-conducting inner cylinder all do not contact the inner bottom surface of the inner extension cylinder of the inner upper end cover, the heat conduction power of the heat extraction rod is the smallest.

[0007] As an optimization, the central angle range of the outer adjustment groove is 90° - 270°, the central angle range of the intermediate adjustment groove is 60° - 180°, and the central angle range of the inner adjustment groove is 30° - 90°. The distance that the heat-conducting outer cylinder, the intermediate heat-conducting cylinder, and the heat-conducting inner cylinder can move up and down is 1 mm - 5 mm. Rotate the height adjustment rod so that the outer adjustment groove, the intermediate adjustment groove, and the inner adjustment groove respectively contact the heights of the movable heat-conducting outer cylinder, the movable heat-conducting intermediate cylinder, and the movable heat-conducting inner cylinder, so that the bottom surfaces of the movable heat-conducting outer cylinder, the movable heat-conducting intermediate cylinder, and the movable heat-conducting inner cylinder contact or separate from the inner bottom surface of the inner extension cylinder of the inner upper end cover, thereby changing the heat conduction power of the heat extraction rod.

[0008] As an optimization, the material of the phase change heat storage metal is one of pure tin, tin alloy, pure zinc, zinc alloy, bismuth alloy, and die-cast aluminum. The weight range of the phase change heat storage metal is 0.5 kg - 20 kg to meet different requirements for the highest temperature and stored energy.

[0009] As an optimization, the materials of the inner cylinder and the outer cylinder are one of stainless steel, aluminum alloy, red copper, brass, and steel. It is necessary to ensure that when the phase change metal melts, the materials of the inner cylinder and the outer cylinder do not melt and have a certain strength.

[0010] As an optimization, the materials of the heat-conducting outer cylinder, the intermediate heat-conducting cylinder, the heat-conducting inner cylinder, the movable heat-conducting outer cylinder, the movable heat-conducting intermediate cylinder, and the movable heat-conducting inner cylinder are one of pure aluminum, aluminum alloy, red copper, and brass. These materials have the characteristics of low price and good heat conduction performance.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: The electric furnace in the present invention can effectively convert the intermittent power generation of wind power, photovoltaic power, and wave energy into heat energy, change the metal from a solid state to a liquid state for heat preservation and heat storage, and has a stable temperature when releasing heat, outputting heat for food heating, low-temperature industrial heating, and greenhouse heating in agriculture, with the characteristics of high efficiency and portability. Brief Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of a portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the present invention; Figure 3 It is a schematic structural diagram of a heating furnace according to the present invention; Figure 4 It is a schematic structural diagram of a heat extraction rod according to the present invention; Figure 5 It is a schematic diagram of the element dimensions of the present invention; Figure 6 It is a schematic structural diagram of a heat extraction rod with adjustable output conduction power according to the present invention; Figure 7 It is a schematic structural diagram of a movable heat conduction cylinder and a height adjusting rod of a heat extraction rod with adjustable output conduction power according to the present invention; Figure 8 It is a schematic structural diagram of the height adjusting rod according to the present invention; In the figure: Figure 1 : 1 - outer upper end cover, 2 - outer upper end cover protruding hole, 3 - outer upper end cover compensation air pipe through hole, 4 - inner upper end cover protruding hole, 5 - inner upper end cover, 6 - inner upper end cover compensation air pipe through hole, 7 - inner upper end cover inner extension cylinder, 8 - inner cylinder, 9 - heating furnace, 10 - outer cylinder inner cavity, 11, outer cylinder, 12 - outer cylinder power cord through hole, 13 - heat preservation layer, 14 - heat preservation layer hole, 15 - phase change heat storage metal, 16 - electric heating wire, 17 - large section of heat extraction rod, 18 - stepped end face of heat extraction rod, 19 - small section of heat extraction rod, 20 - thickness dimension of heat preservation layer between inner and outer upper end covers, 21 - height dimension of heat preservation layer between inner and outer cylinders, 22 - distance dimension, 23 - height dimension of heating furnace, 24 - inner cylinder diameter dimension, 25 - diameter dimension of heat preservation layer protruding hole, 26 - diameter dimension of inner upper end cover protruding hole, 27 - height dimension of inner upper end cover protruding hole, 28 - diameter dimension of heating furnace, 29 - heat preservation layer ventilation hole, 30 - heat extraction rod, 31 - height adjustment hole, 32 - heat conduction outer cylinder, 33 - intermediate heat conduction cylinder, 34 - heat conduction inner cylinder, 35 - height adjusting rod, 36 - movable heat conduction outer cylinder, 37 - movable heat conduction intermediate cylinder, 38 - movable heat conduction inner cylinder, 39 - adjusting rod support structure, 40 - outer adjusting groove, 41 - intermediate adjusting groove, 42 - inner adjusting groove. Detailed Description of the Invention

[0013] In conjunction with the accompanying drawings and specific embodiments, the present invention will be further clarified. It should be understood that the following specific embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. As Figure 1 , Figure 2 and Figure 3 shown, a portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy is characterized in that it comprises an inner cylinder (8), a heating furnace (9), an outer cylinder (11) and a phase change heat storage metal (15). The inner cavity (10) of the outer cylinder of the outer cylinder (11) accommodates and installs the heating furnace (9) and the inner cylinder (8). The outer wall of the outer cylinder (11) has an outer cylinder power cord through hole (12). The upper part of the outer cylinder (11) has an outer upper end cover (1). The outer upper end cover (1) has an outer upper end cover protruding hole (2) and an outer upper end cover compensation air pipe through hole (3). The upper part of the inner cylinder (8) has an inner upper end cover (5). The inner part of the inner cylinder (8) is filled with the phase change heat storage metal (15). The inner upper end cover (5) has an inner upper end cover protruding hole (4), an inner upper end cover compensation air pipe through hole (6) and an inner upper end cover inner extension cylinder (7). There is a heat preservation layer (13) between the outer cylinder (11), the inside of the outer upper end cover (1), the inner cylinder (8), the upper end surface and the outer circumferential surface of the inner upper end cover (5), the periphery of the heating furnace (9) and the outside of the bottom surface. The heat preservation layer (13) has a heat preservation layer hole (14) and a heat preservation layer ventilation hole (29). The heating furnace (9) has an electric heating wire (16). The outer upper end cover compensation air pipe through hole (3), the inner upper end cover compensation air pipe through hole (6) and the heat preservation layer ventilation hole (29) are communicated. After the electric heating wire (16) of the heating furnace (9) receives external electric energy, it can heat the phase change heat storage metal (15) inside the inner cylinder (8). In the example, the power of the electric heating wire (16) is 500W. Due to the function of the heat preservation layer (13), the heat is stored in the phase change heat storage metal (15). In the example, the material of the phase change heat storage metal (15) is pure tin, the melting point of pure tin is 231.9 °C, and the phase change latent heat coefficient is 59.2 kJ / kg.

[0014] As an embodiment of the present invention, as Figure 4As shown, the small section (19) of the heat extraction rod (30) is fitted and installed inside the inner upper end cap extension cylinder (7) of the inner upper end cap (5). The lower end face of the small section (19) of the heat extraction rod is in contact with and installed on the inner bottom surface of the inner upper end cap extension cylinder (7). The large section (17) of the heat extraction rod (30) is installed in the heat insulation layer hole (14). The large section (17) of the heat extraction rod extends out of the outer upper end cap through hole (2). There is a stepped end face (18) of the heat extraction rod between the large section (17) and the small section (19) of the heat extraction rod. The stepped end face (18) of the heat extraction rod is above the upper end face of the inner upper end cap (5). As an example, the heat extraction rod (30) is an aluminum rod with a diameter of 30 mm and a length of 100 mm. One end of the aluminum rod is at 200 °C and the other end is at 99 °C. To heat water to boiling, the power of heat transfer by the aluminum rod is approximately 16.92 kW.

[0015] As an embodiment of the present invention, as Figure 5 shown, the thickness dimension (20) of the heat insulation layer between the outer and inner upper end caps of the heat insulation layer (13) between the outer upper end cap (1) and the inner upper end cap (5) ranges from 15 mm to 100 mm. The inner cylinder (8) has a height dimension (21) of the heat insulation layer between the inner and outer cylinders, and the height dimension (21) of the heat insulation layer between the inner and outer cylinders ranges from 20 mm to 300 mm. The distance dimension (22) between the upper end face of the heating furnace (9) and the bottom surface of the inner cylinder (8) ranges from 20 mm to 80 mm. The inner cylinder diameter dimension (24) of the inner cylinder (8) ranges from 80 mm to 500 mm. The diameter dimension (25) of the heat insulation layer through hole of the heat insulation layer hole (14) ranges from 20 mm to 180 mm. The diameter dimension (26) of the inner upper end cap extension cylinder through hole of the inner upper end cap extension cylinder (7) ranges from 10 mm to 120 mm. The height dimension (27) of the inner upper end cap extension cylinder through hole of the inner upper end cap extension cylinder (7) ranges from 10 mm to 160 mm. The heating furnace diameter dimension (28) of the heating furnace (9) ranges from 80 mm to 500 mm.

[0016] As an embodiment of the present invention, as Figure 6 、 Figure 7 and Figure 8As shown, the small section (19) of the heat extraction rod (30) has a heat-conducting outer cylinder (32), an intermediate heat-conducting cylinder (33), and a heat-conducting inner cylinder (34). The large section (17) of the heat extraction rod has a height adjustment hole (31). A height adjustment rod (35) is installed in the height adjustment hole (31). A movable heat-conducting outer cylinder (36) is coaxially installed in the space between the heat-conducting outer cylinder (32) and the intermediate heat-conducting cylinder (33). A movable heat-conducting intermediate cylinder (37) is coaxially installed in the space between the intermediate heat-conducting cylinders (33). A movable heat-conducting inner cylinder (38) is coaxially installed in the space between the intermediate heat-conducting cylinder (33) and the heat-conducting inner cylinder (34). An adjustment rod support structure (39) provides rotational support for the height adjustment rod (35). The height adjustment rod (35) has an outer adjustment groove (40), an intermediate adjustment groove (41), and an inner adjustment groove (42). The wall thickness of the heat-conducting outer cylinder (32) and the intermediate heat-conducting cylinder (33) is 3 mm. The heat-conducting outer cylinder (32) and the intermediate heat-conducting cylinder (33) are made of aluminum tube profiles and welded to the heat extraction rod (30). The diameter of the heat-conducting inner cylinder (34) is 10 mm. The wall thickness of the movable heat-conducting outer cylinder (36), the movable heat-conducting intermediate cylinder (37), and the movable heat-conducting inner cylinder (38) is 3 mm, and they are made of aluminum tube profiles.

[0017] As an embodiment of the present invention, as Figure 8 shown, the central angle range of the outer adjustment groove (40) is 90° - 270°, the central angle range of the intermediate adjustment groove (41) is 60° - 180°, the central angle range of the inner adjustment groove (42) is 30° - 90°, and the vertical movement distance of the heat-conducting outer cylinder (32), the intermediate heat-conducting cylinder (33), and the heat-conducting inner cylinder (34) is 1 mm - 5 mm.

[0018] As an embodiment of the present invention, as Figure 1 shown, the material of the phase change heat storage metal (15) is one of pure tin, tin alloy, pure zinc, zinc alloy, bismuth alloy, and die-cast aluminum. The weight range of the phase change heat storage metal (15) is 0.5 kg - 20 kg. The factors for material selection include the temperature, price, melting point, and phase change latent heat coefficient required by the application scenario. For example, the melting point of zinc alloy is about 400 °C, the price is cheap, and the phase change latent heat coefficient is high. By selecting appropriate size parameters of the heat extraction rod (30), heat with a suitable power can be output.

[0019] Working principle: A portable heat preservation and heat storage device that converts wind power and photovoltaic electric energy into heat energy. The electric energy input into the heating furnace continuously or intermittently heats the phase change heat storage metal in the inner cylinder. Heat preservation is achieved under the action of heat preservation materials. Heating stops when the temperature exceeds the melting point of the phase change heat storage metal by 2 - 6 °C. The holes in the heat preservation layer are blocked with heat preservation materials to achieve heat preservation of the heat storage device. When in use, the heat preservation materials used for blocking are taken out, the heat extraction rod is inserted, and then a heat exchange device and a heat sink are connected to the end face of the large section of the heat extraction rod, and heat can be released. Since it is heat conduction when there is no heat generation, the efficiency is higher than when there is energy conversion.

[0020] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. For example: changing the shapes of the inner cylinder and the outer cylinder, changing the cross-section from a circular shape to a rectangular shape, a triangular shape, etc., changing the size and thickness of the heat preservation layer, selecting different phase change metal materials, changing the shape of the heat extraction rod, adding different structures to the end of the large section of the heat extraction rod, and adding a temperature control system are all within the scope of protection of the present invention.

Claims

1. A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy, characterized in that: It consists of an inner cylinder (8), a heating furnace (9), an outer cylinder (11) and a phase change heat storage metal (15). The inner cavity (10) of the outer cylinder of the outer cylinder (11) accommodates and installs the heating furnace (9) and the inner cylinder (8). The outer wall of the outer cylinder (11) has an outer cylinder power cord through hole (12). The upper part of the outer cylinder (11) has an outer upper end cover (1). The outer upper end cover (1) has an outer upper end cover protruding hole (2) and an outer upper end cover compensation air pipe through hole (3). The upper part of the inner cylinder (8) has an inner upper end cover (5). The inner part of the inner cylinder (8) is filled with the phase change heat storage metal (15). The inner upper end cover (5) has an inner upper end cover protruding hole (4), an inner upper end cover compensation air pipe through hole (6) and an inner upper end cover inner extension cylinder (7). There is a heat insulation layer (13) between the outer cylinder (11), the inside of the outer upper end cover (1), the inner cylinder (8), the upper end surface of the inner upper end cover (5), the outer circumferential surface outside, the periphery of the heating furnace (9) and the outside of the bottom surface. The heat insulation layer (13) has a heat insulation layer hole (14) and a heat insulation layer ventilation hole (29). The heating furnace (9) has a heating wire (16). The outer upper end cover compensation air pipe through hole (3), the inner upper end cover compensation air pipe through hole (6) and the heat insulation layer ventilation hole (29) are communicated.

2. The portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 1, wherein: The inner extension cylinder (7) of the inner upper end cover (5) is internally fitted with a small section (19) of a heat extraction rod (30). The lower end surface of the small section (19) of the heat extraction rod contacts and installs the inner bottom surface of the inner extension cylinder (7) of the inner upper end cover (5). The large section (17) of the heat extraction rod (30) is installed in the heat insulation layer hole (14). The large section (17) of the heat extraction rod extends out of the outer upper end cover protruding hole (2). There is a heat extraction rod stepped end surface (18) between the large section (17) of the heat extraction rod and the small section (19) of the heat extraction rod. The heat extraction rod stepped end surface (18) is above the upper end surface of the inner upper end cover (5).

3. A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 1, characterized in that: There is an insulation layer thickness dimension (20) between the outer upper end cover (1) and the inner upper end cover (5). The dimension range of the insulation layer thickness dimension (20) between the outer and inner upper end covers is 15 mm - 100 mm. The inner cylinder (8) has an insulation layer height dimension (21) between the inner and outer cylinders. The dimension range of the insulation layer height dimension (21) between the inner and outer cylinders is 20 mm - 300 mm. The dimension range of the distance dimension (22) between the upper end face of the heating furnace (9) and the bottom face of the inner cylinder (8) is 20 mm - 80 mm. The dimension range of the inner cylinder diameter dimension (24) of the inner cylinder (8) is 80 mm - 500 mm. The dimension range of the insulation layer protruding hole diameter dimension (25) of the insulation layer hole (14) is 20 mm - 180 mm. The dimension range of the inner upper end cover protruding hole diameter dimension (26) of the inner upper end cover inner extension cylinder (7) is 10 mm - 120 mm. The dimension range of the inner upper end cover protruding hole height dimension (27) of the inner upper end cover inner extension cylinder (7) is 10 mm - 160 mm. The dimension range of the heating furnace diameter dimension (28) of the heating furnace (9) is 80 mm - 500 mm.

4. A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 2, characterized in that: The heat extraction rod small section (19) of the heat extraction rod (30) has a heat-conducting outer cylinder (32), an intermediate heat-conducting cylinder (33), and a heat-conducting inner cylinder (34). The heat extraction rod large section (17) has a height adjustment hole (31). A height adjustment rod (35) is installed in the height adjustment hole (31). A movable heat-conducting outer cylinder (36) is coaxially installed in the space between the heat-conducting outer cylinder (32) and the intermediate heat-conducting cylinder (33). A movable heat-conducting intermediate cylinder (37) is coaxially installed in the space between the intermediate heat-conducting cylinders (33). A movable heat-conducting inner cylinder (38) is coaxially installed in the space between the intermediate heat-conducting cylinder (33) and the heat-conducting inner cylinder (34). An adjustment rod support structure (39) provides rotational support for the height adjustment rod (35). The height adjustment rod (35) has an outer adjustment groove (40), an intermediate adjustment groove (41), and an inner adjustment groove (42).

5. A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 4, characterized in that: The central angle range of the outer adjustment groove (40) is 90° - 270°. The central angle range of the intermediate adjustment groove (41) is 60° - 180°. The central angle range of the inner adjustment groove (42) is 30° - 90°. The up and down movement distance of the heat-conducting outer cylinder (32), the intermediate heat-conducting cylinder (33), and the heat-conducting inner cylinder (34) is 1 mm - 5 mm.

6. The portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 1, characterized in that: The material of the phase change heat storage metal (15) is one of pure tin, tin alloy, pure zinc, zinc alloy, bismuth alloy, and die-cast aluminum. The weight range of the phase change heat storage metal (15) is 0.5 kg - 20 kg.

7. A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 1, characterized in that: The materials of the inner cylinder (8) and the outer cylinder (11) are one of stainless steel, aluminum alloy, red copper, brass, and steel.

8. A portable heat preservation and heat storage device for converting wind power and photovoltaic electric energy into heat energy according to claim 4, characterized in that: The materials of the heat-conducting outer cylinder (32), the intermediate heat-conducting cylinder (33), the heat-conducting inner cylinder (34), the movable heat-conducting outer cylinder (36), the movable heat-conducting intermediate cylinder (37) and the movable heat-conducting inner cylinder (38) are one of pure aluminum, aluminum alloy, red copper and brass.

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