Method for indoor heating

Abstract

A method for improving indoor heating, which is a method for realizing low-cost and noise-free indoor heating in which a circular heating electric stove wire electric stove is used in conjunction with a stepless temperature and voltage regulator, a circular electric ceramic stove microcrystalline glass panel, an upper stainless steel cylinder, a lower stainless steel cylinder and water, and the water added to the lower stainless steel cylinder is heated to boil so as to efficiently use steam generated from heating. The method uses a concise approach to achieve comfortable and ideal temperature requirements, and realizes low-cost, environment-friendly and noise-free indoor heating at around 24°C. Under different environmental conditions, a heating temperature and a heating time are set according to respective requirements. A heating device of the present invention has a simple structure, is convenient to use, and performs continuous heating in winter in a room of 15 square meters at power of 200W-300W, such that the room temperature can be stabilized at 22°C-23°C, and the heating cost of the heating device is far lower than the electricity cost of heating by air conditioning, and amounts to only about 50% of the cost of central heating.

Description

Indoor heating methods Technical Field This invention relates to a method for improving indoor heating, specifically a method comprising a circular heating element electric furnace, a stepless temperature and voltage regulator, a circular ceramic furnace microcrystalline panel, an upper stainless steel cylinder, a lower stainless steel cylinder, and water used in combination. The method involves heating the water added to the lower stainless steel cylinder to boiling, and efficiently utilizing the steam generated by the heating to achieve low-cost, noiseless indoor heating. Background Technology In 19th-century Europe, centralized heating systems using boilers as heat sources and steam or hot water as heat transfer media emerged. James Watt, the inventor of the steam engine, was one of the pioneers of heating systems, being the first to install radiators in his home and weld copper plates onto the high-temperature pipes. Steam heating and hot water heating became the two main forms of indoor heating, a practice that continues to this day. Between 1855 and 1857, the Russian Franz Sangalli invented cast iron radiators, which were widely used. The International Electrotechnical Commission (IEC) standard IEC 60335-2-30 is one of the international safety standards for household electric heating appliances. This standard specifies requirements for the surface temperature rise of heaters. For example, the surface temperature rise of a heated surface that can be touched should not exceed a specific temperature, such as 55°C. In China, the surface temperature of radiators in centralized heating systems is around 40°C, and according to relevant regulations, an indoor temperature of 18°C ​​or higher is considered acceptable. In reality, the most comfortable indoor temperature for humans in winter is around 22–24°C. Technical issues Central heating requires a large initial investment and incurs high operating and maintenance costs. Indoor temperatures vary significantly due to differences in heat source pipeline distances, building structures, and weather conditions. Even copper or aluminum radiators cannot achieve satisfactory temperatures when the heat source temperature is low. Crucially, the heating time and temperature cannot be controlled, meaning personalized choices are impossible. For example, in Tianjin, China, a 48-square-meter apartment in a small unit incurred an annual heating cost of 1200 yuan for a four-month heating season, and this cost increases with larger rooms. Even in southern China, winter temperatures can approach freezing; therefore, indoor heating is necessary in most parts of China during winter, and is especially important for the elderly and those with weakened immune systems. Besides centralized heating, other heating methods include air conditioning, electric heaters, and small electric heaters. Taking the widely used air conditioning as an example, using a 1.5 horsepower air conditioner in a room, set to 22-24°C in cold winter, consumes significantly more electricity per hour for heating than for cooling, reaching approximately 2 kWh per hour. Prolonged use of air conditioning for heating reduces its lifespan. Furthermore, air conditioning running in a closed room for extended periods without cleaning and maintenance negatively impacts air quality. Additionally, low indoor temperatures and closed windows in winter prevent air circulation, affecting indoor air quality. For achieving ideal temperatures, other heating methods are generally more expensive than centralized heating. Both centralized heating and air conditioning increase indoor temperature but decrease humidity, especially in northern China during winter, where humidity can fall below 30%. In Tianjin earlier this year, the lowest indoor humidity in rooms with and without centralized heating was only 21%. Low indoor humidity is detrimental to human health, especially for the elderly, infants, and patients who require a suitable humidity environment. An indoor humidity range of 40% to 65% is reasonable. Technical solutions The purpose of this invention is to provide a simple method for achieving a comfortable and ideal temperature, ensuring indoor air quality, and realizing a low-cost, noiseless, and environmentally friendly indoor heating method. 1. The first technical solution of the present invention relates to an indoor heating method, wherein the indoor heating method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination. The method utilizes the water added to the lower stainless steel cylinder (4) to heat and boil, generating steam for indoor heating. The characteristic feature is that the outer side of the opening end of the upper stainless steel cylinder (5) has no protruding edge, and the outer structural shape of the opening end of the upper stainless steel cylinder (5) is set to be able to be inserted into the inner side of the opening end of the lower stainless steel cylinder (4) and sealed and connected. The outer side of the opening of the upper stainless steel cylinder (5) without an outward protrusion is the same as the inner side of the opening of the lower stainless steel cylinder (4) with a sealed connection. The length of the overlapping part of the two openings of the upper stainless steel cylinder (5) and the lower stainless steel cylinder (4) can ensure a stable connection. Two handles (10) are provided at the opening of the lower stainless steel cylinder (4), and two handles (11) are provided at the opening of the upper stainless steel cylinder (5). The microcrystalline panel (3) of the circular electric ceramic furnace completely covers the top of the refractory furnace plate (8) of the circular heating element furnace (1). The power cord plug of the stepless temperature and voltage regulator (2) is connected. Connect the plug of the electric furnace plug wire of the circular heating element furnace (1) to the socket of the stepless temperature and voltage regulator (2) on the power socket. Place the lower stainless steel cylinder (4) on the circular heating element furnace (1) covered with the circular ceramic furnace microcrystalline panel (3). The circular ceramic furnace microcrystalline panel (3) is in direct contact with the top of the refractory furnace plate (8) of the circular heating element furnace (1). The bottom of the lower stainless steel cylinder (4) is in direct contact with the circular ceramic furnace microcrystalline panel (3) covering the circular heating element furnace (1). Shortening the distance between the bottom of the lower stainless steel cylinder (4) and the top of the heating element (9) of the circular heating element furnace (1) can improve the heating efficiency. The bottom outer diameter of the lower stainless steel cylinder (4) is the same as the outer diameter of the circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1), which is conducive to improving the heating effect. Three through holes downward fixing nuts (6) are welded at equal intervals at the outer diameter of the lower part of the lower stainless steel cylinder (4). The upper external threads of the prepared three support rods (7) are connected to the internal threads of the three through holes downward fixing nuts (6). The lower bottom of the three support rods (7) connected to the internal threads of the three through holes downward fixing nuts (6) are in contact with the floor. Rotating and adjusting the three support rods (7) can stabilize the lower stainless steel cylinder (4) and reduce the pressure on the circular heating wire furnace (1).Three fixed guide plates (73) are respectively set between the three prepared support rods (7) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (7) of the lower stainless steel cylinder (4) are positioned and lowered through the three fixed guide plates (73); limiting the weight of water added to the lower stainless steel cylinder (4) is one of the necessary conditions to obtain the ideal effect of low power and low cost heating. After repeated experiments, it was found that when the height of water added to the lower stainless steel cylinder (4) is 3 to 8 cm, the ideal effect of low power and low cost heating can be obtained; the weight of water added to the lower stainless steel cylinder (4) is fixedly connected to the three support legs (68) of the circular heating wire furnace (1), and the three support rods (7) of the lower stainless steel cylinder (4) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (7) of the lower stainless steel cylinder (4) are fixedly positioned and lowered through the three fixed guide plates (73); the weight of water added to the lower stainless steel cylinder (4) is fixedly set between the three support rods (7) and the three support legs (68) of the circular heating wire furnace (1) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1 ... set between the three support rods (7) and the three support legs (68) of the circular heating wire furnace (1) are fixedly set between the three support rod Water is poured into the barrel (4). The open end of the upper stainless steel barrel (5) is inserted downwards into the inside of the open end of the lower stainless steel barrel (4). The two stainless steel barrels are sealed together to form a sealed space. The power is turned on and the circular heating element electric furnace (1) is turned on to heat the water added to the lower stainless steel barrel (4). The water is heated and boiled, and the steam generated heats the upper stainless steel barrel (5) and the lower stainless steel barrel (4). The rising steam cools down and the condensed water falls back into the lower stainless steel barrel (4). The steam generated after being heated moves upward continuously, and so on. After the water is heated and boiled, the temperature and pressure of the circular heating element electric furnace (2) are adjusted and reduced. The power of 1) completes the conversion and transmission of heat energy under the condition that water vapor does not leak out, and achieves a very good heating effect; the effective increase in the height and diameter of the combination formed by the connection of the two open stainless steel cylinders can increase the volume of the sealed space. Under the condition that high temperature water vapor does not leak out, its capacity increases, and when the heating power of the circular heating wire furnace (1) is increased, the water vapor storage space generated by the upward movement increases, the outer surface area of ​​the combination formed by the connection of the two open stainless steel cylinders increases, the heat dissipation area of ​​the above combination is expanded, and the heating effect is improved; in the above indoor heating method, the use of low cost and low noise to increase the top surface temperature of the upper stainless steel cylinder (5) is to achieve the ideal heating effect. Key: After the water injected into the lower stainless steel cylinder (4) is heated to boiling, adjust the stepless temperature and pressure regulator (2), reduce the power of the circular heating element furnace (1), and put the circular heating element furnace (1) into the constant temperature heating stage. The water injected into the lower stainless steel cylinder (4) is in a low power heating state and continuously boils, which can reduce the noise to <20dB. When the circular heating element furnace (1) is selected to use a low power constant temperature stage of 200W~300W, it is continuously heated for 24 hours. During this period, the electricity meter shows that the electricity consumption is 0.10 yuan~0.15 yuan per hour. The top surface temperature of the upper stainless steel cylinder (5) can still be stably reached 45℃~55℃. The sound can no longer be heard at a distance of 30cm from the sound source.For an indoor area of ​​15 to 18 square meters, when the combined outer surface area of ​​the upper stainless steel cylinder (5) and the lower stainless steel cylinder (4) reaches 7,000 to 15,000 square centimeters, the temperature of the top surface of the upper stainless steel cylinder (5) and the outer surface of the lower stainless steel cylinder (4) are higher than the outer surface temperature of traditional centralized heating indoor radiators, thus fully meeting the needs of indoor heating in winter. Excessive water weight injected into the lower stainless steel cylinder (4) will reduce the boiling state of the water and reduce the heating effect. During continuous heating, the water weight loss during the evaporation of the water injected into the lower stainless steel cylinder (4) into water vapor is 1 to 25 grams per hour. The same amount of water should be replenished regularly according to the daily water loss to ensure that the water injected into the lower stainless steel cylinder (4) produces a better water vapor heating effect when boiling. The water stains at the bottom of the lower stainless steel cylinder (4) should be cleaned and wiped regularly to maintain the heat conduction effect of the lower stainless steel cylinder (4). The above is the first technical solution for a method of achieving indoor heating by using an upper stainless steel cylinder and a lower stainless steel cylinder as heating elements for heat transfer. 2. According to the first technical solution of the above-mentioned indoor heating method, the indoor heating method is composed of a circular heating element electric furnace (1), a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination. The method utilizes the water added to the lower stainless steel cylinder (4) to heat and boil, generating steam for indoor heating. Its characteristic is that a circular ceramic furnace black crystal panel (12) of the same size is selected to replace the circular ceramic furnace microcrystalline panel (3) and cover the top of the refractory furnace plate (8) of the circular heating element electric furnace (1); having a lower end that is... A lower stainless steel cylinder (13) with a truncated circular cone shape replaces the lower stainless steel cylinder (4). The outer diameter of the bottom of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is the same as the outer diameter of the circular ceramic furnace black crystal panel (12) or the circular ceramic furnace microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the circular heating wire furnace (1). The inner side of the opening end of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom does not have an outward protrusion edge on the outer side of the inserted opening end of the upper stainless steel cylinder (1). The slopes of the sealed connection parts on the outer side of the open end of the upper stainless steel cylinder (18) are the same, and the length of the overlapping part of the two open end connection ports of the upper stainless steel cylinder (18) and the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom can ensure that the connection is stable; a reinforcing rib (19) is provided on the inner side of the open end of the upper stainless steel cylinder (18), and a reinforcing rib (14) is provided on the outer side of the open end of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom, thereby improving the deformation resistance of the open end of the upper stainless steel cylinder (18) and the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom; in full Under the condition that the depth requirement of the heating wire (9) of the heating wire furnace (1) is met, the depth of the groove for placing the heating wire (9) in the refractory furnace plate (8) of the circular heating wire furnace (1) is reduced, and the bottom of the lower stainless steel cylinder (13) with the lower end of a flat truncated cone shape is in direct contact with the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1). The distance between the bottom of the lower stainless steel cylinder (13) with the lower end of a flat truncated cone shape and the top of the heating wire (9) of the circular heating wire furnace (1) can further improve its heating effect.The heating element (9) is supported and isolated by an insulated high-temperature resistant ceramic tube for the refractory furnace plate (8) to minimize the contact area between the heating element (9) and the refractory furnace plate (8). The top of the heating element (9) contacts the bottom surface of the covered circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) to transfer more of the heat generated by the heating element (9) to the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3). Three through-hole fixing nuts (16) with downward-facing holes are welded at equal intervals at the outer diameter of the lower stainless steel cylinder (13), which has a flat truncated conical shape at the bottom. The three prepared support rods (17) The upper external thread of the three support rods (17) is connected to the internal thread of the three downward-facing fixing nuts (16). The lower bottom of the three support rods (17) connected to the internal thread of the three downward-facing fixing nuts (16) is in contact with the floor. Rotating and adjusting the three support rods (17) can stabilize the lower stainless steel cylinder (13) with a flat truncated cone shape at the lower end, reducing the pressure on the circular heating wire furnace (1). Three fixed guide plates (73) are respectively set between the prepared three support rods (17) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) and the three support legs (68) of the circular heating wire furnace (1) are respectively It is a fixed connection; the three support rods (17) of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom are positioned and lowered by three fixed guide plates (73); the maximum volume of the lower part of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom, and the volume occupied by the upper limit of the water required to be added when the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is limited to the weight of water added into the cylinder of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom. This is one of the necessary conditions for obtaining the ideal effect of low power and low cost heating. After repeated... Experiments showed that adding water to the lower stainless steel cylinder (13) with a lower truncated circular cone shape to a height of 3-11 cm achieved an ideal heating effect with low power and low cost. Two handles (15) were provided at the open end of the lower stainless steel cylinder (13) with a lower truncated circular cone shape, and two handles (20) were provided at the open end of the upper stainless steel cylinder (18). A high-strength refractory material was selected to make the refractory furnace plate (8) of the circular heating wire furnace (1), and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) was increased to improve the overall strength of the refractory furnace plate (8). The above is the second technical solution for a method of achieving indoor heating by using the upper stainless steel cylinder and the lower stainless steel cylinder with a lower truncated circular cone shape as heating elements for heat transfer. 3. An indoor heating method according to the first technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire furnace (1), a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling and steam is generated to heat the room, wherein the lower cylinder (21) is made of copper or aluminum material with good thermal conductivity to replace the lower stainless steel cylinder (4), and a circular ceramic furnace black crystal panel (12) of the same size is selected to replace the circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1). The top of the plate (8); the slope of the inner side of the opening end of the lower cylindrical barrel (21) made of copper or aluminum and the outer side of the opening end of the upper stainless steel cylindrical barrel (26) are the same. The length of the overlapping part of the two opening ends of the lower cylindrical barrel (21) made of copper or aluminum and the upper stainless steel cylindrical barrel (26) can ensure that the connection is stable; three fixing nuts (24) with downward through holes are welded at equal intervals at the outer diameter of the lower cylindrical barrel (21) made of copper or aluminum. The upper external threads of the three prepared support rods (25) are connected to the internal threads of the three fixing nuts (24) with downward through holes. The three support rods (25) connected to the internal threads of the three fixing nuts (24) with downward through holes are connected to the internal threads of the three fixing nuts (24) with downward through holes. The bottom of the lower end of the 25) contacts the floor. Rotating and adjusting the three support rods (25) can stabilize the lower cylinder (21) made of copper or aluminum, reducing the pressure on the circular heating wire furnace (1). Three fixed guide plates (73) are respectively set between the prepared three support rods (25) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1). The three support rods (25) of the lower cylinder (21) made of copper or aluminum are positioned and lowered through the three fixed guide plates (73). The weight of water added to the lower cylinder (21) made of copper or aluminum is limited to a small amount. One of the necessary conditions for achieving ideal heating effect with low power and low cost is that when the water level in the lower cylinder (21) made of copper or aluminum is 3 to 8 cm, ideal heating effect with low power and low cost can be achieved. A reinforcing rib (27) is provided on the inner side of the opening end of the upper stainless steel cylinder (26), and a reinforcing rib (22) is provided on the outer side of the opening end of the lower cylinder (21) made of copper or aluminum, thereby improving the deformation resistance of the upper stainless steel cylinder (26) and the opening end of the lower cylinder (21) made of copper or aluminum. Two handles (23) are provided on the opening end of the lower cylinder (21) made of copper or aluminum, and two handles (28) are provided on the opening end of the upper stainless steel cylinder (26).To reduce manufacturing costs, the height of the lower cylindrical chamber (21) made of copper or aluminum is reduced. The above describes a technical solution for using an upper stainless steel cylindrical chamber and a lower cylindrical chamber made of copper or aluminum as heating elements to transfer heat and achieve indoor heating. 4. An indoor heating method according to the first technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4) and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling and water vapor is generated to heat the room, wherein the lower stainless steel cylinder (4) is replaced by a lower cylinder (29) made of copper or aluminum material with good thermal conductivity and having a flat truncated conical shape at the lower end, and a circular ceramic stove black crystal panel (12) of the same size is replaced by a circular ceramic stove. The microcrystalline panel (3) covers the top of the refractory furnace plate (8) of the circular heating wire furnace (1); under the condition of meeting the depth requirements for placing the heating wire (9) of the circular heating wire furnace (1), reducing the depth of the groove for placing the heating wire (9) in the refractory furnace plate (8) of the circular heating wire furnace (1), and shortening the distance between the bottom of the lower cylindrical barrel (29) made of copper or aluminum material with a flat truncated conical shape at the bottom and the top of the heating wire (9) of the circular heating wire furnace (1) can further improve its heating effect; selecting high-strength refractory material to make the refractory furnace plate (8) of the circular heating wire furnace (1) and increasing the circular heating wire furnace (1) The thickness of the refractory furnace plate (8) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1); a reinforcing rib (35) is provided on the inner side of the opening end of the upper stainless steel cylinder (34), and a reinforcing rib (30) is provided on the outer side of the opening end of the lower cylinder (29) made of copper or aluminum material with a truncated circular cone shape, to improve the deformation resistance of the upper stainless steel cylinder (34) and the opening end of the lower cylinder (29) made of copper or aluminum material with a truncated circular cone shape; the outer diameter of the bottom of the lower cylinder (29) made of copper or aluminum material with a truncated circular cone shape is smaller than the outer diameter of its opening end, and the outer diameter of the bottom of the lower cylinder (29) made of copper or aluminum material with a truncated circular cone shape is smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower cylindrical barrel (29) with a truncated circular cone shape at the bottom is the same as the outer diameter of the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the circular heating electric furnace (1). The inner side of the opening end of the lower cylindrical barrel (29) with a truncated circular cone shape at the bottom made of copper or aluminum is the same as the slope of the sealed connection part of the upper stainless steel cylindrical barrel (34) with an opening end inserted. The length of the overlapping part of the two opening ends of the lower cylindrical barrel (29) with a truncated circular cone shape at the bottom made of copper or aluminum and the upper stainless steel cylindrical barrel (34) can ensure that the connection is stable.Three downward-facing fixing nuts (32) are welded at equal intervals on the outer diameter of the lower part of a lower cylindrical barrel (29) made of copper or aluminum material, which has a truncated circular cone shape at the lower end. The upper external threads of the three prepared support rods (33) are connected to the internal threads of the three downward-facing fixing nuts (32). The lower bottom of the three support rods (33) connected to the internal threads of the three downward-facing fixing nuts (32) is in contact with the floor. Rotating and adjusting the three support rods (33) can stabilize the lower cylindrical barrel (29) made of copper or aluminum material with a truncated circular cone shape. The lower cylindrical barrel (29) is shaped to reduce the pressure on the circular heating wire furnace (1); three fixed guide plates (73) are respectively set between the three prepared support rods (33) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (33) of the lower cylindrical barrel (29) made of copper or aluminum material with a flat truncated cone shape at the bottom are positioned and lowered through the three fixed guide plates (73). The maximum volume of the lower cylindrical section (29) with a truncated circular cone shape at the bottom, made of copper or aluminum, and the volume occupied by the upper limit of water required to heat the lower cylindrical section (29) with a truncated circular cone shape at the bottom, are all necessary conditions for achieving the ideal effect of low-power, low-cost heating. When the water level in the lower cylindrical container (29) made of copper or aluminum with a truncated circular cone shape at the bottom is 3-11 cm, an ideal heating effect with low power and low cost can be achieved. Two handles (31) are provided at the opening end of the lower cylindrical container (29) made of copper or aluminum with a truncated circular cone shape at the bottom, and two handles (36) are provided at the opening end of the upper stainless steel cylindrical container (34). To reduce manufacturing costs, the height of the lower cylindrical container (29) made of copper or aluminum with a truncated circular cone shape at the bottom is reduced. The above is a technical solution for using an upper stainless steel cylindrical container and a lower cylindrical container (29) made of copper or aluminum with a truncated circular cone shape at the bottom as heating elements to transfer heat and achieve indoor heating. 5. An indoor heating method according to the first technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4) and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate water vapor for indoor heating, characterized in that a lower cylinder (37) made of copper or aluminum material with good thermal conductivity and having a flat truncated conical shape at the lower end is selected to replace the lower stainless steel cylinder (4) and an upper cylinder (42) made of copper or aluminum material is selected to replace the upper stainless steel cylinder (5). A circular ceramic cooker black crystal panel (12) of the same size replaces the circular ceramic cooker microcrystalline panel (3) and covers the top of the refractory heating plate (8) of the circular heating wire cooker (1); under the condition of meeting the depth requirements for placing the heating wire (9) of the circular heating wire cooker (1), reducing the depth of the groove for placing the heating wire (9) in the refractory heating plate (8) of the circular heating wire cooker (1), and shortening the distance between the bottom of the lower cylindrical barrel (37) made of copper or aluminum material with a flat truncated cone shape at the bottom and the top of the heating wire (9) of the circular heating wire cooker (1) can further improve its heating effect; selecting high-strength refractory material to make the circular heating wire cooker (1) The refractory furnace plate (8) of the circular heating wire furnace (1) is thickened to improve the overall strength of the refractory furnace plate (8); a reinforcing rib (38) is provided on the outside of the opening end of the lower cylindrical barrel (37) made of copper or aluminum material with a truncated circular cone shape to improve the deformation resistance of the opening end; a reinforcing rib (43) is provided on the inside of the opening end of the upper cylindrical barrel (42) made of copper or aluminum material to improve the deformation resistance of the opening end; the outer diameter of the bottom of the lower cylindrical barrel (37) made of copper or aluminum material with a truncated circular cone shape is smaller than the outer diameter of its opening end; the lower cylindrical barrel (37) made of copper or aluminum material with a truncated circular cone shape has a bottom outer diameter smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower cylindrical barrel (37) with a flat-truncated circular cone shape is the same as the outer diameter of the circular electric ceramic furnace black crystal panel (12) or circular electric ceramic furnace microcrystalline panel (3) covering the top of the refractory electric furnace plate (8) of the circular heating electric furnace (1). The inner side of the opening end of the lower cylindrical barrel (37) with a flat-truncated circular cone shape made of copper or aluminum material is the same as the outer side of the opening end of the upper cylindrical barrel (42) made of copper or aluminum material. The length of the overlapping part of the two opening ends of the lower cylindrical barrel (37) with a flat-truncated circular cone shape made of copper or aluminum material and the upper cylindrical barrel (42) made of copper or aluminum material can ensure that the connection is stable.A lower cylindrical barrel (37) made of copper or aluminum, with a truncated conical shape at its lower end, has three fixing nuts (40) with downward-facing through holes welded at equal intervals on its lower outer diameter. The upper external threads of the three prepared support rods (41) are connected to the internal threads of the three fixing nuts (40) with downward-facing through holes. The lower bottom of the three support rods (41) connected to the internal threads of the three fixing nuts (40) with downward-facing through holes contacts the floor. Rotating and adjusting the three support rods (41) can stabilize the lower cylindrical barrel (37) made of copper or aluminum. The lower cylindrical barrel (37) has a flat, truncated circular cone shape, reducing the pressure on the circular heating wire furnace (1). Three fixed guide plates (73) are respectively set between the three prepared support rods (41) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1). The three support rods (41) of the lower cylindrical barrel (37) with a flat, truncated circular cone shape at the bottom are made of copper or aluminum. After being positioned and lowered by three fixed guide plates (73), the maximum volume of the lower cylindrical section with a truncated circular cone shape at the bottom of the lower cylindrical section (37) made of copper or aluminum material, and the volume occupied by the upper limit value of water required to be added when the lower cylindrical section (37) made of copper or aluminum material is heated; the weight of water added into the lower cylindrical section (37) made of copper or aluminum material is limited to the following: One of the necessary conditions for achieving ideal low-power, low-cost heating is that when water is added to the lower cylindrical container (37) made of copper or aluminum with a truncated circular cone shape at the bottom to a height of 3-11 cm, ideal low-power, low-cost heating can be achieved. Two handles (39) are provided at the open end of the lower cylindrical container (37) made of copper or aluminum with a truncated circular cone shape at the bottom, and two handles (44) are provided at the open end of the upper cylindrical container (42) made of copper or aluminum. The above is a technical solution for an indoor heating device that uses an upper stainless steel cylindrical container and a lower cylindrical container made of copper or aluminum with a truncated circular cone shape at the bottom as heating elements for heat transfer. The indoor heating device described in the first technical solution or the second technical solution of the above-mentioned indoor heating method is composed of a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove microcrystalline panel (3) or a circular ceramic stove black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4) or a lower stainless steel cylinder (13) with a truncated conical shape at the lower end, and water. The device utilizes water added to the lower stainless steel cylinder (4) or the lower stainless steel cylinder (13) with a truncated conical shape at the lower end to heat and boil, generating steam for indoor heating. Its characteristic is the use of the above-mentioned technology. To ensure an ideal indoor temperature, the plan involves using a circular electric heater (1) in a 15-square-meter room to heat water in a lower stainless steel cylinder (4) or a lower stainless steel cylinder (13) with a flat, truncated conical shape at the bottom. The heating is performed continuously for 60 minutes at a power of 200W to 300W. The electricity cost, as shown on the meter, is 0.10 to 0.15 yuan, significantly lower than the cost of air conditioning heating. Through repeated comparative tests, this heating method demonstrates that the electricity cost during the entire winter heating season is only about 40% of the cost of centralized heating for a room of the same size. Adjustments are made according to changes in air temperature and room temperature requirements. 6. An indoor heating method according to the first technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire electric furnace (1), a stepless temperature and voltage regulator (2), a circular ceramic stove microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, and the method utilizes the water added in the lower stainless steel cylinder (4) to heat and boil, generating water vapor for indoor heating, characterized in that a lower stainless steel pot (45) with a flat truncated conical shape at the lower end is selected to replace the lower stainless steel cylinder (4), and the bottom of the lower stainless steel pot (45) with a flat truncated conical shape at the lower end is connected to the circular ceramic stove microcrystalline panel covering the circular heating wire electric furnace (1). (3) Direct contact shortens the distance between the bottom of the stainless steel pot (45) with a flat, truncated circular cone shape at the bottom and the top of the heating wire (9) of the circular heating wire furnace (1), which can further improve its heating effect; the outer diameter of the bottom of the lower stainless steel pot (45) with a flat, truncated circular cone shape at the bottom is smaller than the outer diameter of its opening end, and the outer diameter of the bottom of the lower stainless steel pot (45) with a flat, truncated circular cone shape at the bottom is the same as the outer diameter of the circular ceramic ceramic panel (3) covering the top of the refractory furnace plate (8) of the circular heating wire furnace (1); the inner side of the opening end of the lower stainless steel pot (45) with a flat, truncated circular cone shape at the bottom is the same as the outer side of the opening end of the inserted upper stainless steel cylinder (49). The slopes of the side-sealed joints are the same, and the length of the two open ends of the lower stainless steel pot (45) and the upper stainless steel barrel (49), which have a flat-ended circular cone shape at the bottom, and the length of the overlapping part of the connection port can ensure that the connection is stable; a reinforcing rib (50) is provided on the inner side of the open end of the upper stainless steel barrel (49) to improve the deformation resistance of the open end of the upper stainless steel barrel (49); three fixing nuts (47) with downward through holes are welded at equal intervals at the outer diameter of the lower end of the lower stainless steel pot (45), which has a flat-ended circular cone shape at the bottom; the upper external threads of the three prepared support rods (48) are connected to the internal threads of the three fixing nuts (47) with downward through holes, and the three fixing nuts (47) with downward through holes are connected to the internal threads of the three fixing nuts (47) with downward through holes. The bottom of the three support rods (48) connected by the internal thread of the fixed nut (47) is in contact with the floor. Rotating and adjusting the three support rods (48) can stabilize the lower stainless steel pot (45) with a flat truncated cone shape at the bottom, reducing the pressure on the circular heating wire furnace (1). Three fixed guide plates (73) are respectively set between the prepared three support rods (48) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1). The three support rods (48) of the lower stainless steel pot (45) with a flat truncated cone shape at the bottom are positioned and lowered through the three fixed guide plates (73).The maximum volume of the lower stainless steel pot (45) with a truncated circular cone shape at the bottom can satisfy the upper limit of the volume occupied by the water required to heat the lower stainless steel pot (45). Limiting the weight of water added to the lower stainless steel pot (45) is one of the necessary conditions to achieve the ideal effect of low-power, low-cost heating. When the height of water added to the lower stainless steel pot (45) is 3 to 11 cm, the ideal effect of low-power, low-cost heating can be achieved. Two handles (46) are provided at the opening end of the lower stainless steel pot (45) with a truncated circular cone shape, and two handles (51) are provided at the opening end of the upper stainless steel cylinder (49). The above-mentioned heating During the process, a circular stainless steel steaming rack (52) made of uniformly spaced stainless steel wires is placed in the lower stainless steel pot (45) with a flat-ended circular cone shape at the bottom. This is beneficial for heating the food with high-temperature steam. Under ideal conditions, it can steam buns, steamed cakes, steamed sweet potatoes, steamed rice, etc., or stew various foods using the lower stainless steel pot (45) with a flat-ended circular cone shape at the bottom. A circular stainless steel steaming rack (53) with a diameter smaller than the inner diameter of the bottom of the lower stainless steel pot (45) is placed in the lower stainless steel pot (45) with a flat-ended circular cone shape at the bottom. This isolates the food from the bottom of the lower stainless steel pot (45) with a flat-ended circular cone shape at the bottom, preventing the stewed food from sticking to the bottom of the lower stainless steel pot (45) with a flat-ended circular cone shape at the bottom and burning. The above describes a technical solution that uses an upper stainless steel cylindrical tank and a lower stainless steel pot with a truncated conical shape at the bottom as heating elements to transfer heat, achieving both indoor heating and food cooking simultaneously. 7. According to the second technical solution of the above-mentioned indoor heating method, an indoor heating method is composed of a circular heating wire electric furnace (1), a stepless temperature and voltage regulator (2), a circular electric ceramic stove black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (13) with a lower end truncated circular cone shape, and water, which are used in combination. The method utilizes water added to the lower stainless steel cylinder (13) with a lower end truncated circular cone shape to heat and boil, generating steam for indoor heating. The characteristic is that a lower stainless steel pot (54) with a lower end truncated circular cone shape is selected to replace the lower stainless steel cylinder (13) with a lower end truncated circular cone shape. 3) The bottom of the lower stainless steel pot (54) with a truncated circular cone shape at the bottom is in direct contact with the circular ceramic black crystal panel (12) covering the circular heating wire electric stove (1). Shortening the distance between the bottom of the stainless steel pot (54) with a truncated circular cone shape at the bottom and the top of the heating wire (9) of the circular heating wire electric stove (1) can further improve its heating effect. The structure (63) of the concave stainless steel steamer baskets of the same structural size is placed between the upper stainless steel barrel (58) and the lower stainless steel pot (54) with a truncated circular cone shape at the bottom. Since the upper stainless steel barrel (58) and the lower stainless steel pot (54) with a truncated circular cone shape at the bottom are in the middle, the structure (63) of the upper stainless steel barrel (58) and the lower stainless steel pot (54) with a truncated circular cone shape at the bottom are in the middle. The structure (63) of stacked stainless steel steamers with the same structural dimensions is added in the middle of the stainless steel pot (54). The height of the upper stainless steel cylinder (58) should be reduced. In the stacked structure (63) of stacked stainless steel steamers with the same structural dimensions, the bottom of each steamer is made of stainless steel wire with evenly distributed intervals, which is conducive to heating food with high temperature water steam. In order to reduce the resistance of water steam rising generated in the lower stainless steel pot (54) with a flat truncated cone shape at the bottom, the bottom of each steamer in the stacked structure (63) of stacked stainless steel steamers with the same structural dimensions is removed and replaced with a structure of evenly distributed stainless steel wire. All uniformly spaced stainless steel wires cover the bottom area of ​​the bottomless concave stainless steel steamer, which is less than 15%, to enhance the flow of water vapor and the heating effect. The upper concave structure and the lower boss structure of each concave stainless steel steamer in the structure (63) of the combination and stacking of concave stainless steel steamers of the same structural size are retained. The structure (63) of the combination and stacking of concave stainless steel steamers of the same structural size can be sealed and connected with the upper stainless steel cylinder (58) and the lower stainless steel pot (54) with a flat truncated circular cone shape at the lower end. A reinforcing rib (59) is provided on the inner side of the opening end of the upper stainless steel cylinder (58) to improve the deformation resistance of the upper stainless steel cylinder (58).Three downward-facing fixing nuts (56) are welded at equal intervals on the outer diameter of the lower part of the lower stainless steel pot (54), which has a truncated conical shape at the bottom. The upper external threads of the three prepared support rods (57) are connected to the internal threads of the three downward-facing fixing nuts (56). The bottom of the lower part of the three support rods (57) connected to the internal threads of the three downward-facing fixing nuts (56) is in contact with the floor. Rotating and adjusting the three support rods (57) can stabilize the pot. A lower stainless steel pot (54) with a flat, truncated conical shape at the bottom reduces the pressure on the circular heating element furnace (1); three fixed guide plates (73) are respectively set between the three prepared support rods (57) and the three support legs (68) of the circular heating element furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating element furnace (1); a lower stainless steel pot (54) with a flat, truncated conical shape at the bottom reduces the pressure on the circular heating element furnace (1); The three support rods (57) of the lower stainless steel pot (54) are positioned and lowered by three fixed guide plates (73). The maximum volume of the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom can meet the volume occupied by the upper limit of the water required to be added when the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom is limited to the weight of water added into the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom. This is one of the necessary conditions for obtaining the ideal effect of low power and low cost heating. When the height of water added into the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom is 3 to 11 cm, the ideal effect of low power and low cost heating can be obtained. Two handles (55) are provided at the opening end of the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom, and two handles (60) are provided at the opening end of the upper stainless steel cylinder (58).During the heating process described above, a circular stainless steel steaming rack (61) made of uniformly spaced stainless steel wires is placed in the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom. This facilitates the heating of food by high-temperature steam. Under ideal conditions, it can steam buns, steamed cakes, steamed sweet potatoes, steamed rice, etc., or stew various foods using the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom. A circular stainless steel steaming rack (62) with a diameter smaller than the inner diameter of the bottom of the lower stainless steel pot (54) is placed in the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom. This isolates the food from the bottom of the lower stainless steel pot (54) with a flat-ended circular cone shape at the bottom, preventing the stewed food from sticking to the bottom of the lower stainless steel pot (54) and burning when heated. The above describes a technical solution that uses an upper stainless steel cylindrical tank and a lower stainless steel pot with a flat, truncated circular cone shape at the bottom, combined with a conical stainless steel steamer basket of the same structural dimensions in the middle, as the heating element for heat transfer, enabling both indoor heating and food steaming / cooking. 8. An indoor heating method according to the second technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (13) with a lower end truncated circular cone shape, and water, which are used in combination. The method utilizes the water added to the lower stainless steel cylinder (13) with a lower end truncated circular cone shape to heat and boil, generating water vapor for indoor heating. The characteristic is that the lower cylinder (70) with a lower end truncated circular cone shape made of copper or aluminum material with good thermal conductivity is selected to replace the lower stainless steel cylinder (70) with a lower end truncated circular cone shape. The lower cylindrical section of the steel cylindrical barrel (13), below the straight barrel section, has a truncated circular cone shape at the bottom. A lower cylindrical barrel (70) made of copper or aluminum with a truncated circular cone shape is firmly connected to the straight barrel section of the lower stainless steel cylindrical barrel (13) with a truncated circular cone shape at the bottom by means of folded edge joining, welding, or high-temperature adhesive bonding. The maximum volume of the lower cylindrical barrel (70) made of copper or aluminum with a truncated circular cone shape at the bottom of the lower cylindrical barrel (67) is sufficient to meet the upper limit of the water required to be added when the lower cylindrical barrel (67) of the heating device is heated. The weight of water added to the lower cylindrical barrel (67) of the device is one of the necessary conditions for achieving the ideal effect of low-power, low-cost heating. After repeated experiments, it was found that the ideal effect of low-power, low-cost heating can be achieved when the height of water added to the lower cylindrical barrel (67) of the heating device is 3 to 11 cm. Ensure that the bottom and sides of the heated water are in contact with copper or aluminum materials with good thermal conductivity to improve its heating effect. Select a round electric ceramic furnace black crystal panel (12) or a round electric ceramic furnace microcrystalline panel (3) of the same size to cover the top of the refractory electric furnace plate (8) of the round heating wire electric furnace (1). Replace the lower cylindrical barrel (67) of the heating device with the lower layer with a flat truncated conical shape at the bottom. In the stainless steel cylinder (13), the outer diameter of the bottom of the lower cylinder (70) made of copper or aluminum with a flat truncated conical shape is the same as the outer diameter of the circular electric ceramic furnace black crystal panel (12) or circular electric ceramic furnace microcrystalline panel (3) covering the top of the refractory electric furnace plate (8) of the circular heating electric furnace (1); the slope of the inner side of the opening end of the lower cylinder (67) of the heating device and the outer side of the opening end of the upper stainless steel cylinder (64) without an outward protrusion edge are the same; the length of the overlapping part of the two opening end connection ports of the upper stainless steel cylinder (64) and the lower cylinder (67) of the heating device can ensure that the connection is stable.A reinforcing rib (65) is provided on the inner side of the opening end of the upper stainless steel cylinder (64), and a reinforcing rib (83) is provided on the outer side of the opening end of the lower cylinder (67) of the heating device, thereby improving the deformation resistance of the opening ends of the upper stainless steel cylinder (64) and the lower cylinder (67) of the heating device; under the condition of meeting the depth requirements for placing the heating wire (9) of the circular heating wire furnace (1), the depth of the groove for placing the heating wire (9) in the refractory furnace plate (8) of the circular heating wire furnace (1) is reduced, and the bottom of the lower cylinder (67) of the heating device is... The part is in direct contact with the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1), shortening the distance between the bottom of the lower cylindrical barrel (67) of the heating device and the top of the heating wire (9) of the circular heating wire furnace (1) can further improve its heating effect; three through holes downward fixing nuts (71) are welded at equal intervals at the outer diameter of the lower part of the straight barrel section of the lower cylindrical barrel (67) of the heating device, and the upper external threads of the three prepared support rods (72) are connected to the three through holes downward fixing nuts (71). The internal threads of the three support rods (72) are connected to the internal threads of the three through-hole downward-facing fixing nuts (71). The bottom of the three support rods (72) contacts the floor. Rotating and adjusting the three support rods (72) can stabilize the lower cylinder (67) of the heating device and reduce the pressure on the circular heating wire furnace (1). Three fixed guide plates (73) are respectively set between the prepared three support rods (72) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) and the three support legs (68) of the circular heating wire furnace (1) are respectively Fixed connection; the three support rods (72) of the lower cylindrical barrel (67) of the heating device are positioned and lowered by three fixed guide plates (73). Two handles (69) are provided at the open end of the lower cylindrical barrel (67) of the heating device, and two handles (66) are provided at the open end of the upper stainless steel cylindrical barrel (64); the refractory furnace plate (8) of the circular heating wire furnace (1) is made of high-strength refractory material, and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1). 9. An indoor heating method according to the second technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (13) with a lower end truncated right circular cone shape, and water, which are used in combination to heat and boil the water added to the lower stainless steel cylinder (13) with a lower end truncated right circular cone shape to generate water vapor for indoor heating. The characteristic is that the bottom of the lower stainless steel cylinder (13) with a lower end truncated right circular cone shape is replaced with a bottom (80) made of copper or aluminum material, becoming a cylinder made of copper or aluminum material with good thermal conductivity. The lower cylinder (77) of the heating device, which has a bottom (80) and a truncated circular cone shape, is a lower cylinder (77) of the heating device. The bottom (80) of the cylinder, made of copper or aluminum, is firmly connected to the bottom side of the lower stainless steel cylinder (13), which has a truncated circular cone shape at the bottom end, by means of folded edge interlocking, welding, or high-temperature adhesive bonding. The maximum volume of the lower cylinder part with a truncated circular cone shape at the bottom end of the lower cylinder (77) of the heating device is sufficient to meet the upper limit of the volume occupied by the water required to be added when the lower cylinder (77) of the heating device is heating. The weight of water added into the lower cylinder (77) of the heating device is limited to obtain low power and low temperature. One of the necessary conditions for achieving ideal heating effect at low cost is that, through repeated experiments, it was found that adding water to the lower cylindrical tank (77) of the heating device to a height of 3-11 cm can achieve ideal heating effect with low power and low cost. A circular ceramic stove black crystal panel (12) or a circular ceramic stove microcrystalline panel (3) of the same size is selected to cover the top of the refractory furnace plate (8) of the circular heating wire furnace (1). The lower cylindrical tank (77) of the heating device replaces the lower stainless steel cylindrical tank (13) with a flat-ended truncated cone shape. The outer diameter of the bottom (80) of the lower cylindrical tank (77) made of copper or aluminum material is the same as that of the circular ceramic stove black crystal panel covering the top of the refractory furnace plate (8) of the circular heating wire furnace (1). 12) The outer diameter of the microcrystalline panel (3) of the circular electric ceramic stove is the same; the slope of the inner side of the opening end of the lower cylindrical barrel (77) of the heating device and the outer side of the opening end of the upper stainless steel cylindrical barrel (74) without an outward protrusion is the same; the length of the overlapping part of the two opening ends of the upper stainless steel cylindrical barrel (74) and the lower cylindrical barrel (77) of the heating device can ensure that the connection is stable; a reinforcing rib (75) is provided on the inner side of the opening end of the upper stainless steel cylindrical barrel (74), and a reinforcing rib (78) is provided on the outer side of the opening end of the lower cylindrical barrel (77) of the heating device, thereby improving the deformation resistance of the upper stainless steel cylindrical barrel (74) and the opening end of the lower cylindrical barrel (77) of the heating device.While meeting the depth requirements for placing the heating wire (9) of the circular heating wire furnace (1), the depth of the groove for placing the heating wire (9) in the refractory furnace plate (8) of the circular heating wire furnace (1) is reduced. The bottom of the lower cylinder (77) of the heating device is in direct contact with the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1), thus shortening the contact time between the bottom of the lower cylinder (77) of the heating device and the circular heating wire furnace. The distance between the tops of the heating element (9) of (1) can further improve its heating effect; three fixing nuts (81) with downward through holes are welded at equal intervals at the outer diameter of the straight barrel part of the lower cylindrical part of the heating device; the upper external threads of the three prepared support rods (82) are connected to the internal threads of the three fixing nuts (81) with downward through holes; the lower bottom of the three support rods (82) connected to the internal threads of the three fixing nuts (81) with downward through holes are in contact with the floor. Rotating and adjusting the three support rods (82) can stabilize the lower cylinder (77) of the heating device and reduce the pressure on the circular heating wire furnace (1); three fixed guide plates (73) are respectively set between the prepared three support rods (82) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (82) of the lower cylinder (77) of the heating device 2) Positioned and lowered after being positioned by three fixed guide plates (73); two handles (79) are provided at the open end of the lower cylindrical barrel (77) of the heating device, and two handles (76) are provided at the open end of the upper stainless steel cylindrical barrel (74); high-strength refractory material is selected to make the refractory furnace plate (8) of the circular heating wire furnace (1), and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1). 10. An indoor heating method according to the first technical solution of the above-mentioned indoor heating method, wherein the indoor heating method is composed of a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4) and water used in combination, and the method utilizes the water added in the lower stainless steel cylinder (4) to heat and boil, generating water vapor for indoor heating, characterized in that a lower ordinary stainless steel cylinder (86) is selected to replace the lower stainless steel cylinder (4), The lower ordinary stainless steel cylinder (86) has two handles (87) at its open end. A reinforcing rib (88) is provided on the upper outer side of the open end of the lower ordinary stainless steel cylinder (86). The upper ordinary stainless steel cylinder (92) is selected to replace the upper stainless steel cylinder (5). The upper ordinary stainless steel cylinder (92) has two handles (91) on its outer side at its open end. A reinforcing rib (93) is provided on the outer side of the open end of the upper ordinary stainless steel cylinder (92). The lower ordinary stainless steel cylinder (86) and the upper ordinary stainless steel cylinder (5)... A stainless steel intermediate connecting sleeve (84) is added between the steel cylinders (92). Two handles (85) are provided on the outside of the stainless steel intermediate connecting sleeve (84). A reinforcing rib (99) is provided on the upper inner side of the stainless steel intermediate connecting sleeve (84), and a reinforcing rib (100) is provided on the lower inner side of the stainless steel intermediate connecting sleeve (84). The slope of the connection between the upper outer side of the stainless steel intermediate connecting sleeve (84) and the inner side of the upper ordinary stainless steel cylinder (92) is the same. The slope of the lower outer side of the stainless steel intermediate connecting sleeve (84) is the same as that of the upper inner side of the upper ordinary stainless steel cylinder (92). The slope of the inner joint of the lower ordinary stainless steel cylinder (86) is the same. The upper and lower ends of the outer side of the stainless steel intermediate connecting sleeve (84) are covered with upper silicone sleeve (90) and lower silicone sleeve (89) respectively, which can enhance the sealing and fitting connection between the stainless steel intermediate connecting sleeve (84) and the upper ordinary stainless steel cylinder (92) and the lower ordinary stainless steel cylinder (86). A through hole is opened at the top of the upper ordinary stainless steel cylinder (92) and a pressure reducing valve (94) is installed to adjust the internal pressure of the sealed heating device when it is heating.A detachable and movable circular stainless steel metal ring (95) is added to the lower end of the outer side of the lower ordinary stainless steel cylinder (86). A through hole is opened on the outer side of the circular stainless steel metal ring (95) and a nut (96) is welded thereon. A bolt (97) for fastening the circular stainless steel metal ring (95) to the lower end of the lower ordinary stainless steel cylinder (86) is used to fix the circular stainless steel metal ring (95) by rotating through the internal thread of the nut (96). Three nuts (98) are evenly distributed and welded on the outer side of the circular stainless steel metal ring (95). The upper threads of the three prepared support rods (7) are respectively rotated to connect with the internal threads of the three nuts (98). Adjust the three support rods (7) to make stable contact with the ground. The three support rods (7) connected to the three nuts (98) of the circular stainless steel metal ring (95) are positioned and lowered through three fixed guide plates (73). The lower ordinary stainless steel cylinder (86) and the upper ordinary stainless steel cylinder (92) of the heating element with the above-mentioned combined structure are both existing common parts. The lower ordinary stainless steel cylinder (86) and the upper ordinary stainless steel cylinder (92) are firmly connected together by a specially made stainless steel intermediate connecting sleeve (84). According to the structural size requirements of different indoor heating elements, the matching diameter and height of the stainless steel intermediate connecting sleeve (84) are selected and manufactured to complete the combination of the heating elements. The silicone sleeve has excellent temperature resistance and can withstand working environments from -80℃ to 300℃. It is corrosion-resistant, non-toxic, harmless, odorless, low in cost, and has a long service life. 11. An indoor heating method according to the first or second technical solution, or indoor heating method 3, or indoor heating method 4, or indoor heating method 5, or indoor heating method 6, or indoor heating method 7, or indoor heating method 8, or indoor heating method 9 described above, wherein the indoor heating method comprises a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace microcrystalline panel (3) or a circular electric ceramic furnace black crystal panel (12), an upper stainless steel cylinder or an upper cylinder made of copper or aluminum, a lower stainless steel cylinder or a lower stainless steel cylinder with a truncated conical shape at the lower end or a lower cylinder made of copper or aluminum. A method for heating devices that utilizes water in conjunction with a lower cylindrical barrel made of cylindrical material, copper, or aluminum with a truncated perfect conical shape, or a lower cylindrical barrel made of stainless steel, to generate steam for indoor heating, characterized by adding silicone sleeves to the joints of the various components of the heating element to improve the airtight connection of the components; and a through hole with a pressure-reducing valve at the top of the upper heating barrel of the heating element assembly to adjust the internal pressure of the sealed heating device during heating. 12. An indoor heating method according to the first or second technical solution, or indoor heating method 3, or indoor heating method 4, or indoor heating method 5, or indoor heating method 6, or indoor heating method 7, or indoor heating method 8, or indoor heating method 9, or indoor heating method 10 described above, wherein the indoor heating method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3) or a circular ceramic furnace black crystal panel (12), an upper stainless steel cylinder or an upper cylinder made of copper or aluminum material, The lower stainless steel cylinder or the lower stainless steel cylinder with a truncated circular cone shape at the bottom, or the lower cylinder made of copper or aluminum, the lower cylinder of the heating device made of copper or aluminum with a truncated circular cone shape, or the lower cylinder of the heating device made of stainless steel, are used in conjunction with water to form a method in which water added to the lower heating element of the heating device in the above-mentioned indoor heating is heated to boiling and generates water vapor to heat the room. Its characteristic is that a circular electric ceramic stove replaces the circular heating wire electric stove (1) and the stepless temperature and voltage regulator (2) as the heating device. Heating devices combining a ceramic cooker microcrystalline panel (3) or a round ceramic cooker black crystal panel (12), and various methods for heat transfer using the above-mentioned devices as heating elements to achieve indoor heating, including technical solutions for achieving indoor heating while simultaneously steaming or cooking food; using existing ceramic cookers, without considering noise, suitable for achieving indoor heating within 3 hours and simultaneously steaming or cooking food while heating indoors; when using a round ceramic cooker as the above-mentioned heating device, shortening the top of the iron-chromium heating element and the round ceramic cooker black crystal panel. The increased spacing between the bottom panels improves heating efficiency. The electronic and temperature control systems and cooling fans of the traditional round ceramic cooktop have been eliminated, leaving only the heating element (composed of an iron-chromium heating plate and a heat-resistant plate) and a stepless temperature and voltage regulator for adjusting power. This allows the improved round ceramic cooktop to operate continuously at low power and eliminates noise during operation. The improved round ceramic cooktop also enhances heating performance. Furthermore, using the improved round ceramic cooktop to boil water or heat food eliminates the radiation effects of an induction cooker and the exhaust pollution produced by a gas stove. 13. An indoor heating method according to the 10th technical solution of the above-mentioned indoor heating method, wherein the indoor heating method comprises a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace microcrystalline panel (3), and a lower ordinary stainless steel cylinder (86) and an upper ordinary stainless steel cylinder (92) are firmly connected together by a specially made stainless steel intermediate connecting sleeve (84). The stainless steel intermediate connecting sleeve (84) with matching diameter and height is selected and manufactured according to the structural size requirements of different indoor heating heating elements to complete the combination of heating elements. The method uses water added to the lower stainless steel cylinder (4) to heat and boil, generating water vapor for indoor heating. Its feature is that the lower ordinary stainless steel cylinder (103) is connected to a stainless steel cylinder (104), and a stainless steel basin (101) is inserted into the upper end of the stainless steel cylinder as the combined heating element. The technical method of heating indoor heating is achieved by heating water added to the lower ordinary stainless steel cylinder (103) to boiling and generating water vapor for heat transfer. The slope of the connection between the inner side of the upper port of the lower ordinary stainless steel cylinder (103) and the outer side of the lower port of the inserted stainless steel cylinder (104) is the same. The slope of the connection between the inner side of the upper port of the stainless steel cylinder (104) and the outer side of the inserted stainless steel basin (101) is the same. Two handles (105) are provided at the open end of the lower ordinary stainless steel cylinder (103). A reinforcing rib (106) is provided at the upper outer side of the open end of the lower ordinary stainless steel cylinder (103). In the heating element with the above combined structure, the lower ordinary stainless steel cylinder (103), the stainless steel cylinder (104) and the stainless steel basin (101) are all existing common parts. The stainless steel cylinder (104) is selected as a stainless steel flue. 14. An indoor heating method according to the 10th technical solution of the above-mentioned indoor heating method, wherein the indoor heating method comprises a circular heating wire electric furnace (1) and a stepless temperature and voltage regulator (2), a circular electric ceramic furnace microcrystalline panel (3), and a lower ordinary stainless steel cylinder (86) and an upper ordinary stainless steel cylinder (92) are firmly connected together by a specially made stainless steel intermediate connecting sleeve (84). The combination of heating elements is completed by selecting and manufacturing matching stainless steel intermediate connecting sleeves (84) with appropriate diameters and heights according to the structural size requirements of different indoor heating elements. The method utilizes water added to the lower stainless steel cylinder (4) to heat and boil, generating steam for indoor heating. Its characteristic is that the lower ordinary stainless steel cylinder (103) is connected to a stainless steel cylinder (104), and a stainless steel top cover (102) is inserted into the upper end of the stainless steel cylinder as the combined heating element. The lower ordinary stainless steel cylinder... The technical method of heating water added to the cylinder (103) to boil, generating water vapor for heat transfer, and realizing indoor heating, is as follows: the slope of the inner side of the upper port of the lower ordinary stainless steel cylinder (103) and the outer side of the lower port of the stainless steel cylinder (104) are the same; the slope of the inner side of the upper port of the stainless steel cylinder (104) and the outer side of the inserted stainless steel cover (102) are the same; two handles (105) are provided at the open end of the lower ordinary stainless steel cylinder (103); a reinforcing rib (106) is provided at the upper outer side of the open end of the lower ordinary stainless steel cylinder (103); and a handle (109) of the stainless steel cover is provided on the top surface of the stainless steel cover (102). In the heating element with the above combined structure, the lower ordinary stainless steel cylinder (103) and the stainless steel cylinder (104) connected to it are both existing common parts, and the stainless steel cylinder (104) is selected as a stainless steel flue. 15. An indoor heating method according to the 13th technical solution of the above-mentioned indoor heating method, wherein the indoor heating method comprises a circular heating wire electric furnace (1) and a stepless temperature and pressure regulator (2), a circular electric ceramic furnace microcrystalline panel (3), and a combination heating element consisting of a lower ordinary stainless steel cylinder (103) connected to a stainless steel pipe (104), and a stainless steel basin (101) inserted into the upper end of the stainless steel pipe. The water added to the lower ordinary stainless steel cylinder (103) is heated to boiling, and water vapor is generated for heat transfer to achieve indoor heating. The characteristic of the method is that a through hole is opened on the inner side of the bottom of the horizontal plane of the stainless steel basin (101) inserted at the upper end of the heating element and a pressure reducing valve (107) is provided to adjust the internal pressure of the sealed heating device when heating. 16. An indoor heating method according to the 14th technical solution of the above-mentioned indoor heating method, wherein the indoor heating method comprises a circular heating wire electric furnace (1) and a stepless temperature and pressure regulator (2), a circular electric ceramic furnace microcrystalline panel (3), and a combination heating element consisting of a lower ordinary stainless steel cylinder (103) connected to a stainless steel cylinder (104), and a stainless steel top cover (102) inserted into the upper end of the stainless steel cylinder. The water added in the lower ordinary stainless steel cylinder (103) is heated to boiling, and water vapor is generated for heat transfer to achieve indoor heating. The characteristic of the method is that a through hole is opened on the outer side of the top horizontal plane of the stainless steel top cover (102) inserted at the upper end of the combination heating element and a pressure reducing valve (108) is provided to adjust the internal pressure of the sealed heating device when heating. 17. According to the 10th, 13th, 14th, 15th or 16th technical solutions of the above-mentioned indoor heating method, the indoor heating method is a method of heating water added to the lower stainless steel cylinder of the combined heating element to boil and generate water vapor for indoor heating. The characteristic is that a stainless steel clamp that can be adjusted to replace a detachable and movable circular stainless steel metal ring (95) is selected, and a through hole is opened on the outside of the circular stainless steel metal ring (95) and a nut (96) and a fastening bolt (97) are welded on it. Three nuts are evenly distributed and welded on the outside of the stainless steel clamp. The upper threads of the three prepared support rods are rotated and connected to the internal threads of the three nuts welded to the stainless steel clamp. The three support rods are adjusted to be in stable contact with the ground. The three support rods connected to the three nuts welded to the stainless steel clamp are positioned and lowered through three fixed guide plates. According to the 13th or 14th technical solution of the above-mentioned indoor heating method, the indoor heating method is a technical solution that selects a lower ordinary stainless steel cylinder (103) connected to a stainless steel cylinder (104), inserts a stainless steel basin (101) or a stainless steel cover (102) into the upper end of the stainless steel cylinder as a combined heating element for heat transfer and realizes indoor heating. A silicone sleeve is added to the joint of each combined component of the heating element in the above-mentioned indoor heating devices to improve the sealing and fitting effect of the various combined components of the heating element; Page 24 of the specification.

[0036] A new paragraph describing the accompanying drawings has been added after the previous paragraph, resulting in a total of four paragraphs. Figure 11 is a schematic diagram of a technical solution where a lower ordinary stainless steel cylinder is inserted into the lower end of a stainless steel pipe, and a stainless steel basin is inserted into the upper end of the stainless steel pipe as a combined heating element to transfer heat and achieve indoor heating. Figure 12 is a schematic diagram of a technical solution where a lower ordinary stainless steel cylinder is inserted into the lower end of a stainless steel pipe, and a stainless steel top cover is inserted into the upper end of the stainless steel pipe as a combined heating element to transfer heat and achieve indoor heating. Figure 13 is a schematic diagram of a technical solution where a lower ordinary stainless steel cylinder is inserted into the lower end of a stainless steel pipe, and a stainless steel basin equipped with a pressure-reducing valve is inserted into the upper end of the stainless steel pipe as a combined heating element to transfer heat and achieve indoor heating. Figure 14 is a schematic diagram of a technical solution where a lower ordinary stainless steel cylinder is inserted into the lower end of a stainless steel pipe, and a stainless steel top cover equipped with a pressure-reducing valve is inserted into the upper end of the stainless steel pipe as a combined heating element to transfer heat and achieve indoor heating. (Page 26 of the instruction manual)

[0037] New reference numerals are added at the end of the paragraph: 9 reference numerals in total, from 101 to 109. The period after the original reference numeral 100 is changed to a comma. 101. Stainless steel basin; 102. Stainless steel lid; 103. Lower layer ordinary stainless steel cylinder; 104. Stainless steel round pipe; 105. The lower ordinary stainless steel cylinder has two handles at its open end; 106. A reinforcing rib is provided on the upper outer side of the open end of the lower ordinary stainless steel cylinder; 107. A through hole with a pressure-reducing valve is opened on the horizontal surface of the stainless steel basin; 108. A through hole with a pressure-reducing valve is opened on the horizontal surface of the stainless steel lid; 109. Handle of the stainless steel lid. 18. An indoor heating method according to the 10th, 13th, 14th, 15th, or 16th technical solutions described above, wherein the indoor heating method utilizes water added to the lower stainless steel cylindrical tank of the combined heating element to heat and boil, generating steam for indoor heating, characterized in that a square heating wire electric furnace with adjustable heating power or a round heating wire electric furnace with adjustable heating power is selected to replace the round heating wire electric furnace and the stepless temperature and voltage regulator. The combined heating device has a square or round ceramic stove microcrystalline panel or a square or round ceramic stove black crystal panel on the top surface of a square heating wire electric stove with adjustable heating power. A combined heating element is provided on the top surface of the aforementioned ceramic stove microcrystalline panel or ceramic stove black crystal panel. The method of using water added to the combined heating element to heat and generate water vapor for heat transfer to achieve indoor heating is described. The combined heating element is in the shape of a closed cube or a closed cylindrical tube with a square base. Since the refractory furnace plate of the circular heating wire furnace, as well as the black crystal panel and microcrystalline panel of the circular ceramic furnace, are all made of insulating materials, safe use can be guaranteed. High-strength refractory materials are selected to make the furnace plate of the circular heating wire furnace, and the thickness of the furnace plate is increased to improve the overall strength of the furnace plate. An effective method was adopted to eliminate the noise generated by the aforementioned indoor heating device when using water steam for heating, while meeting the indoor heating requirements. Under the above conditions, experiments showed that: reducing the distance between the bottom of the lower stainless steel cylinder and the top of the heating element of the circular heating element furnace from 11.5mm to 8.5mm; when heating for 47 minutes at 500W using the circular heating element furnace, the temperature of the top surface of the upper stainless steel cylinder reached 71.6℃, and the amount of water in the lower stainless steel cylinder decreased by 25 grams after 47 minutes of heating; a stainless steel pot with an outer diameter of 18.8cm and a height of 10.3cm, weighing 645g including the lid, was selected. 1000g of water was added to the pot and placed on a 3000W heating element furnace plate, with the top of the heating element 4.5cm from the top of the furnace plate. The room temperature during the experiment was 19℃, the initial water temperature was 17.3℃, and the furnace was at room temperature, with a heating element temperature of 30℃. With a 00W electric stove, the water in the pot reached a boiling point of 98.5℃ in 10 minutes and 33 seconds. Using the same stainless steel pot and a 3000W electric stove, the heating element was supported by an insulated, high-temperature resistant ceramic tube, isolating the refractory heating plate to minimize the contact area between the heating element and the plate. The top surface of the heating element was flush with the top surface of the refractory heating plate. A 3.7mm thick, 19.5cm outer diameter circular ceramic tile panel was placed over the refractory heating plate, with the bottom of the stainless steel pot in contact with the panel. In the same heating test, with the initial water temperature at 17.3℃, the electric stove at room temperature, and the same weight of 1000g of water, the water boiled in 7 minutes and 27 seconds with a 3000W electric stove, reducing the heating time by 30%. This heating result significantly exceeded the result achieved using an induction cooker. When the temperature of the top surface of the upper stainless steel cylinder to be heated exceeds 55°C, cover the outer surface of the heating element with a heat-resistant fabric protective cover. Under the same conditions, replacing the heating element of the circular heating element electric stove with an induction cooker, when the induction cooker was used to heat for 47 minutes at 500W, the power consumption of both heating methods was the same. However, the temperature of the top surface of the upper stainless steel cylinder heated by the induction cooker only reached 60.5℃, and the water in the lower stainless steel cylinder decreased by 20 grams after 47 minutes of heating. The difference in heating methods resulted in significant differences in heating outcomes. Induction cooker heating is intermittent and generates radiation during operation, producing 30-40dB of noise even at its lowest power setting. Moreover, induction cookers can only operate continuously for 3-4 hours. In contrast, the circular heating element electric stove, connected to a stepless temperature and voltage regulator, produced no audible boiling noise when continuously heating at a set power of 200W-250W during the constant temperature heating phase. This is because the 1000W... The outer diameter of the heating wire in a circular heating element furnace is 4.5mm. The depth of the groove for placing the heating wire in the furnace plate of a 1000W circular heating element furnace is 9.5mm. Therefore, while meeting the depth requirements for placing the heating wire, reducing the depth of the groove for placing the heating wire in the furnace plate of a 1000W circular heating element furnace, and further shortening the distance between the bottom of the lower stainless steel cylinder and the top of the heating wire, can further improve its heating effect. The outdoor temperature was -9℃. The experiment was conducted in a room without heating. Initially, the room temperature was 15℃. A 1000W circular heating element electric heater, a stepless temperature and voltage regulator, a circular ceramic cooktop with a microcrystalline panel, an upper stainless steel cylinder, a lower stainless steel cylinder, and water were used in conjunction with the 1000W circular heating element electric heater. The 1000W circular heating element electric heater was covered with a 160mm diameter circular ceramic cooktop with a microcrystalline panel. The dimensions of the lower stainless steel cylinder were: upper inner diameter 24cm, height 40cm, and bottom outer diameter 20.5cm. The distance between the bottom of the lower stainless steel cylinder and the top of the heating element of the circular heating element electric heater was 8.5mm. 1060g of water was placed in the lower stainless steel cylinder. The height of the combined assembly, with the open ends of the upper and lower stainless steel cylinders inserted into each other and sealed tightly, was 136cm. The total weight of the entire assembly was 5145g. A 1000W circular electric heating element was used to heat the water in the lower stainless steel drum. After 15 minutes of heating, the top surface of the upper stainless steel drum was already hot to the touch. The power was then reduced to 500W. After another 15 minutes of heating, the room temperature was 17℃. Heating continued at 500W for 30 minutes, and the temperature of the top surface of the upper stainless steel drum reached 68℃. Heating continued at 500W for 60 minutes, and the room temperature reached 20℃. After another 60 minutes of heating, the temperature of the top surface of the upper stainless steel drum reached 69℃. Heating continued at 500W for 90 minutes, and the room temperature reached 22℃. After another 90 minutes of heating, the temperature of the top surface of the upper stainless steel drum reached 70℃. The room temperature increased by 7 degrees Celsius after 90 minutes of heating. According to the first and second technical solutions of the above-mentioned method, which consists of a circular heating element electric furnace and a stepless temperature and voltage regulator, a circular ceramic furnace microcrystalline panel, an upper stainless steel cylinder, a lower stainless steel cylinder, and water used in combination, and utilizes the water added in the lower stainless steel cylinder to heat and boil, generating steam for indoor heating, it was surprisingly found through experiments that when the circular heating element electric furnace and the stepless temperature and voltage regulator are turned on at a power of 500W to heat the steamed cake, when the temperature of the top surface of the upper stainless steel cylinder reaches 62℃, continuing to heat for 20 minutes will steam two layers of cake made from a total of three kilograms of flour. The cakes are now fully steamed. During the heating process described above, a circular stainless steel steaming rack made of evenly spaced stainless steel wires is placed in the lower stainless steel cylinder. This facilitates the heating of food by high-temperature steam. Ideally, it can simultaneously steam buns, steamed cakes, sweet potatoes, and rice, or stew various foods in the lower stainless steel cylinder. A circular stainless steel steaming rack with a diameter smaller than the inner diameter of the bottom of the lower stainless steel cylinder is placed in the lower stainless steel cylinder to isolate the food from the bottom of the lower stainless steel cylinder and prevent the stewed food from sticking to the bottom of the lower stainless steel cylinder or burning during heating. Beneficial effects The beneficial effects of this invention are as follows: Using the indoor heating method of this invention, the heating temperature and heating time can be set according to individual needs under different environmental conditions; the heating device used in this invention has a simple structure, low heating cost, no noise, no radiation, no pollution, and is easy to operate. In a 15-square-meter room, continuous heating at 200W-300W for 60 minutes can stabilize the room temperature at 22℃-23℃, with electricity costs displayed on the meter ranging from 0.10 yuan to 0.15 yuan, far lower than the electricity cost of air conditioning heating. Depending on different indoor temperature requirements, under the same heating cycle conditions, it only requires... This is equivalent to about 40% of the cost of centralized heating. In the aforementioned indoor heating process, a circular stainless steel steaming rack made of evenly spaced stainless steel wires is placed in the lower stainless steel cylinder. This facilitates the heating of food by high-temperature steam, allowing for the simultaneous steaming of buns, cakes, sweet potatoes, rice, etc., and the stewing of various foods within the lower stainless steel cylinder. Replacing the upper and lower stainless steel cylinders with a sealed container of the same outer diameter at the bottom of the lower cylinder for heating and cooking utilizes a low-power, low-boiling method, resulting in less nutrient loss and better performance. In China, 80% of households, approximately 400 million families, require winter heating. Widespread application of this indoor heating method can reduce winter heating costs by about 60%, significantly reducing energy consumption and generating substantial economic benefits. Because the heating device used in this invention heats up quickly and has low heating costs, it is also important to open windows regularly during winter, depending on the indoor air quality, to improve indoor air quality through circulation and renewal. Using the indoor heating method of this invention, the indoor humidity in Tianjin, China during winter can be controlled at 50% to 65%, significantly improving the problem of indoor dryness caused by centralized heating. Attached Figure Description Figure 1 is a schematic diagram of the first technical solution for achieving indoor heating by using an upper stainless steel cylinder and a lower stainless steel cylinder as heating elements for heat transfer. Figure 2 is a schematic diagram of a second technical solution that uses an upper stainless steel cylinder and a lower stainless steel cylinder with a truncated circular cone shape at the bottom as heating elements and supplementary features to transfer heat and achieve indoor heating. Figure 3 is a schematic diagram of a technical solution that uses an upper stainless steel cylinder and a lower cylinder made of copper or aluminum as the heating element and supplementary features to transfer heat and achieve indoor heating. Figure 4 is a schematic diagram of a technical solution that uses an upper stainless steel cylinder and a lower cylinder made of copper or aluminum with a truncated perfect circular cone shape as the heating element to transfer heat and achieve indoor heating. Figure 5 is a schematic diagram of a technical solution that uses an upper cylindrical chamber made of copper or aluminum and a lower cylindrical chamber made of copper or aluminum with a truncated circular cone shape as heating elements to transfer heat and achieve indoor heating. Figure 6 is a schematic diagram of a technical solution that uses an upper stainless steel cylinder and a lower stainless steel pot with a truncated conical shape at the bottom as heating elements to transfer heat and achieve indoor heating while steaming or cooking food. Figure 7 is a schematic diagram of a technical solution that uses an upper stainless steel cylinder and a lower stainless steel pot with a flat, truncated circular cone shape at the bottom, and a concave stainless steel steamer basket of the same structural dimensions in the middle as a heating element to transfer heat, so as to achieve indoor heating while steaming food. Figure 8 is a schematic diagram of a heating device that uses an upper stainless steel cylinder and a lower cylinder made of copper or aluminum with a truncated circular cone shape to replace the lower stainless steel cylinder with a truncated circular cone shape at the bottom. The structure of the heating device, in which the lower cylinder is located below the straight part of the lower stainless steel cylinder with a truncated circular cone shape, is used as the heating element to transfer heat and achieve indoor heating. Figure 9 is a schematic diagram of a technical solution where the bottom of a lower stainless steel cylinder with a truncated circular cone shape at the bottom is replaced with a bottom made of copper or aluminum, creating a heating device with a copper or aluminum bottom and a truncated circular cone shape. The lower cylinder and the upper stainless steel cylinder work together to transfer heat and achieve indoor heating. Figure 10 is a schematic diagram of a technical solution that uses a stainless steel intermediate connecting sleeve as a heating element to transfer heat between the lower and upper ordinary stainless steel cylinders to achieve indoor heating. Explanation of reference numerals in the attached drawings: 1. Circular heating element electric furnace; 2. Stepless temperature and voltage regulator; 3. Circular ceramic cooker microcrystalline panel; 4. Lower stainless steel cylinder; 5. Upper stainless steel cylinder; 6. Three through-hole downward-facing fixing nuts; 7. Three support rods; 8. Refractory furnace plate; 9. Heating element; 10. Two handles at the open end of the lower stainless steel cylinder; 11. Two handles at the open end of the upper stainless steel cylinder; 12. Circular ceramic cooker black crystal panel; 13. Lower stainless steel cylinder with a truncated circular cone shape at the bottom; 14. Reinforcing ribs on the outer side of the open end of the lower stainless steel cylinder with a truncated circular cone shape at the bottom; 15. Lower stainless steel cylinder with a truncated circular cone shape at the bottom. The barrel has two handles at its open end; 16. Three downward-facing fixing nuts; 17. Three support rods; 18. Upper stainless steel barrel; 19. Reinforcing ribs are provided on the inner side of the open end of the upper stainless steel barrel; 20. Two handles are provided at the open end of the upper stainless steel barrel; 21. Lower barrel made of copper or aluminum; 22. Reinforcing ribs are provided on the outer side of the open end of the lower barrel made of copper or aluminum; 23. Two handles are provided at the open end of the lower barrel made of copper or aluminum; 24. Three downward-facing fixing nuts; 25. Three support rods; 26. Upper stainless steel barrel; 27. Reinforcing ribs are provided on the inner side of the open end of the upper stainless steel barrel; 28. Reinforcing ribs are provided at the open end of the upper stainless steel barrel. 29. A lower cylindrical barrel made of copper or aluminum with a truncated circular cone shape at the bottom; 30. A reinforcing rib is provided on the outer side of the open end of the lower cylindrical barrel made of copper or aluminum with a truncated circular cone shape at the bottom; 31. Two handles are provided at the open end of the lower cylindrical barrel made of copper or aluminum with a truncated circular cone shape at the bottom; 32. Three fixing nuts with three through holes facing downwards; 33. Three support rods; 34. An upper stainless steel cylindrical barrel; 35. A reinforcing rib is provided on the inner side of the open end of the upper stainless steel cylindrical barrel; 36. Two handles are provided at the open end of the upper stainless steel cylindrical barrel; 37. A lower cylindrical barrel made of copper or aluminum with a truncated circular cone shape at the bottom; 38. A lower cylindrical barrel made of copper or aluminum with a truncated circular cone shape at the bottom; 39. A lower cylindrical container with a truncated conical shape at its open end has reinforcing ribs on the outer side; 40. A lower cylindrical container made of copper or aluminum with a truncated conical shape at its open end has two handles; 41. Three through-holes facing downwards, and fixing nuts; 42. Three support rods; 43. An upper cylindrical container made of copper or aluminum; 44. A copper or aluminum upper cylindrical container with reinforcing ribs on the inner side of its open end; 45. An upper cylindrical container made of copper or aluminum with two handles at its open end; 46. A lower stainless steel pot with a truncated conical shape at its open end; 47. Three through-holes facing downwards, and fixing nuts; 48. Three support rods; 49.50. The inner side of the open end of the upper stainless steel cylinder is provided with reinforcing ribs. 51. The open end of the upper stainless steel cylinder is provided with two handles. 52. A circular stainless steel steaming rack made of evenly spaced stainless steel wires is placed in the lower stainless steel pot, which has a lower end shaped like a truncated perfect cone. 53. A circular stainless steel steaming rack is built into the lower stainless steel pot, which has a lower end shaped like a truncated perfect cone. 54. A lower stainless steel pot with a lower end shaped like a truncated perfect cone. 55. Two handles are provided at the open end of the lower stainless steel pot, which has a lower end shaped like a truncated perfect cone. 56. Three fixing nuts with downward-facing through holes. 57. Three support rods. 58. Upper stainless steel cylinder. 59. The upper stainless steel cylinder... 60. Reinforcing ribs are provided on the inner side of the open end; 61. Two handles are provided on the open end of the upper stainless steel cylinder; 62. A circular stainless steel steaming rack made of evenly spaced stainless steel wires is placed in the lower stainless steel pot, which has a truncated circular cone shape at the bottom; 63. A circular stainless steel steaming rack is built into the lower stainless steel pot, which has a truncated circular cone shape at the bottom; 64. A structure of stacked concave stainless steel steaming baskets of the same structural dimensions; 65. An upper stainless steel cylinder; 66. Reinforcing ribs are provided on the inner side of the open end of the upper stainless steel cylinder; 67. Two handles are provided on the open end of the upper stainless steel cylinder; 68. The lower cylinder of the heating device; 69. The three support legs of the circular heating element electric furnace; The lower cylindrical container has two handles at its open end; 70. A lower cylindrical container made of copper or aluminum with a truncated circular cone shape; 71. Three fixing nuts with downward-facing through holes; 72. Three support rods; 73. Three fixing guide plates; 74. An upper stainless steel cylindrical container; 75. Reinforcing ribs are provided on the inner side of the open end of the upper stainless steel cylindrical container; 76. Two handles are provided at the open end of the upper stainless steel cylindrical container; 77. The lower cylindrical container of the heating device; 78. Reinforcing ribs are provided on the outer side of the open end of the lower cylindrical container of the heating device; 79. Two handles are provided at the open end of the lower cylindrical container of the heating device; 80. A container bottom made of copper or aluminum; 81. Three fixing nuts with downward-facing through holes; 82. Three support rods; 83. Heating... The lower cylindrical section of the device has a reinforcing rib on the outer side of its open end; 84. Stainless steel intermediate connecting sleeve; 85. Two handles are provided on the outer side of the stainless steel intermediate connecting sleeve; 86. Lower ordinary stainless steel cylindrical section; 87. Two handles are provided at the open end of the lower ordinary stainless steel cylindrical section; 88. A reinforcing rib is provided at the upper outer side of the lower ordinary stainless steel cylindrical section; 89. Lower silicone sleeve; 90. Upper silicone sleeve; 91. Two handles are provided at the open end of the upper ordinary stainless steel cylindrical section; 92. Upper ordinary stainless steel cylindrical section; 93. A reinforcing rib is provided at the open outer side of the upper ordinary stainless steel cylindrical section; 94. Pressure reducing valve; 95. Circular stainless steel metal collar; 96. A nut is welded on; 97. A bolt for fastening connection; 98.Three nuts; 99. The upper inner side of the stainless steel intermediate connecting sleeve is equipped with a reinforcing rib; 100. The lower inner side of the stainless steel intermediate connecting sleeve is equipped with a reinforcing rib. The best embodiment of the present invention The preferred embodiment of the present invention is, respectively, the eighth method in the indoor heating method: replacing the lower cylinder of the lower stainless steel cylinder (with a truncated circular cone shape at the bottom) with a lower cylinder made of copper or aluminum material with good thermal conductivity, where the upper stainless steel cylinder has a straight barrel portion below the bottom portion of the lower stainless steel cylinder with a truncated circular cone shape at the bottom, with the structure of the heating device having a truncated circular cone shape at the bottom portion below the straight barrel portion of the lower stainless steel cylinder body as the heating element for heat transfer and achieving indoor heating; or the ninth method in the indoor heating method: [The method involves] replacing the lower stainless steel cylinder (with a truncated circular cone shape at the bottom portion) with a lower cylinder made of copper or aluminum material with good thermal conductivity, where the water added to the lower heating element of the indoor heating device is heated to boiling and steam is generated for indoor heating; The bottom of the lower stainless steel cylinder, which has a truncated conical shape, is replaced with a bottom made of copper or aluminum. This creates a heating device with a truncated conical shape and a copper or aluminum bottom, which has good thermal conductivity. The lower cylinder, in conjunction with the upper stainless steel cylinder, forms a heat transfer mechanism for indoor heating. Silicone sleeves are added to the joints of the various components of the heating element in these two indoor heating devices to improve the airtight connection. A through-hole is opened at the top of the upper heating cylinder in each of the above-mentioned heating solutions, and a pressure-reducing valve is installed to adjust the internal pressure of the sealed heating device during heating. The eighth or ninth indoor heating method described above achieves the best heating effect by adding silicone sleeves and a pressure-reducing valve. The tenth method in the indoor heating method is to implement the present invention, which has good heating effect, the lowest cost of manufacturing indoor heating devices, and is easy to promote and apply: adding a stainless steel intermediate connecting sleeve between the lower and upper ordinary stainless steel cylinders as a heating element to transfer heat and realize indoor heating. Embodiments of the present invention Compared with centralized heating, the aforementioned "indoor heating method" significantly reduces winter heating costs in northern China, where the coldest period of winter accounts for one-third of the total heating season. The beginning and end of the centralized heating season together comprise two-thirds of the winter heating season. Heating costs are lower during these two-thirds periods, as the highest temperature on radiators during this time is less than 40°C, whereas during the coldest part of winter, the highest radiator temperature reaches 40°C to 44°C. Therefore, by adjusting the heating temperature and time according to climate changes and individual needs, the indoor heating method of this invention can significantly reduce winter heating costs compared to centralized heating throughout the entire heating season. Example 1. A 1000W circular heating element electric furnace 1 is used in conjunction with a stepless temperature and voltage regulator 2, a circular ceramic cooktop microcrystalline panel 3, an upper stainless steel cylinder 5, a lower stainless steel cylinder 4, and water. A 2000W stepless temperature and voltage regulator 2 and a 1000W circular heating element electric furnace 1 are used. The circular ceramic cooktop microcrystalline panel 3 has a diameter of 160mm. The dimensions of the lower stainless steel cylinder 4 are: upper inner diameter 24cm, height 40cm, and bottom outer diameter 20.5cm. The distance between the bottom of the lower stainless steel cylinder 4 and the top of the heating wire 9 of the circular heating element furnace 1 is 11.5mm; the dimensions of the upper stainless steel cylinder 5 are an outer diameter of 23.8cm at the open end and a height of 100cm; the outer slope of the outer side of the open end of the upper stainless steel cylinder 5 (which has no protruding edge) and the inner side of the open end of the lower stainless steel cylinder 4 are the same as the slope of their sealed connection; the opening of the upper stainless steel cylinder 5 and the lower stainless steel cylinder 4 are... The combined structure, with its overlapping and sealed connections, has a height of 138cm. 1125g of water is placed in the lower stainless steel cylinder 4. The power of the 1000W circular heating element electric furnace 1, connected to the stepless temperature and voltage regulator 2, is reduced to 500W to heat the water in the lower stainless steel cylinder 4. After 47 minutes of heating, the top surface temperature of the upper stainless steel cylinder 5 reaches 62.6℃. After another 47 minutes, the power is reduced to 350W and heating continues. After 66 minutes, the upper surface temperature... The top surface temperature of the stainless steel cylinder 5 reached 55.8℃. After heating for 77 minutes, the power was reduced to 250W and heating continued. At this time, the top surface temperature of the upper stainless steel cylinder 5 reached 52.4℃. Heating continued at 250W for 83 minutes, and the top surface temperature of the upper stainless steel cylinder 5 reached 51℃. At this time, the sound of boiling water had completely disappeared, and only the faint sound of the 1000W circular heating element electric furnace 1 heating at 250W power was heard. The sound was completely inaudible at a distance of 30cm from the sound source. Example 2. A 1000W circular heating element electric furnace 1 is used in conjunction with a stepless temperature and voltage regulator 2, a circular ceramic cooktop microcrystalline panel 3, an upper stainless steel cylinder 5, a lower stainless steel cylinder 4, and water. The 1000W circular heating element electric furnace 1 is covered with a 160mm diameter circular ceramic cooktop black crystal panel 12. The lower stainless steel cylinder 4 has an inner diameter of 24cm at the top, a height of 40cm, and an outer diameter of 20.5cm at the bottom. The distance between the bottom of the lower stainless steel cylinder 4 and the top of the heating element 9 of the circular heating element electric furnace 1 is 8.5mm, including the 3.5mm thickness of the microcrystalline panel 3. The upper stainless steel cylinder 5 has an outer diameter of 23.8cm at the open end and a height of 1... 00cm; The slope of the outer side of the opening end of the upper stainless steel cylinder 5, which has no protruding edge on the outside, and the inner side of the opening end of the lower stainless steel cylinder 4 are the same. The height of the combined body of the upper stainless steel cylinder 5 and the lower stainless steel cylinder 4, which are inserted into the opening ends and overlapped and sealed together, is 138cm. 1215g of water is put into the lower stainless steel cylinder 4. The power of the 1000W circular heating element electric furnace 1 connected to the stepless temperature and voltage regulator 2 is reduced to 500W to heat the water in the lower stainless steel cylinder 4. After heating for 47 minutes, the top surface temperature of the upper stainless steel cylinder 5 reaches 71.6℃. The 1215g of water in the lower stainless steel cylinder 4 has decreased by 25g after 47 minutes of continuous heating. Example 3. A 1000W circular heating element electric furnace 1 is selected and used in conjunction with a stepless temperature and voltage regulator 2, a circular ceramic cooktop microcrystalline panel 3, an upper stainless steel cylinder 5, a lower stainless steel cylinder 4, and water. The 2000W stepless temperature and voltage regulator 2 and the 1000W circular heating element electric furnace 1 are covered with a 160mm diameter circular ceramic cooktop microcrystalline panel 3. The dimensions of the lower stainless steel cylinder 4 are: upper inner diameter 24cm, height 40cm, and bottom outer diameter 20.5cm. The bottom of the lower stainless steel cylinder 4 is connected to the heating element of the circular heating element electric furnace 1. The distance between the tops of the 9 is 8.5mm, including the 3.5mm thickness of the microcrystalline panel 3 of the circular electric ceramic stove; the dimensions of the upper stainless steel cylinder 5 are an outer diameter of 23.8cm at the open end and a height of 100cm; the outer side of the open end of the upper stainless steel cylinder 5, which has no protruding edge, has the same slope as the inner side of the open end of the lower stainless steel cylinder 4, which is sealed and connected. The height of the combined assembly of the upper stainless steel cylinder 5 and the lower stainless steel cylinder 4, whose open ends are inserted into and overlapped in a sealed and connected manner, is 138cm. 1060 grams of water were placed in the lower stainless steel cylinder 4. The power of the 1000W circular heating element electric furnace 1, connected to the stepless temperature and voltage regulator 2, was reduced to 500W to heat the water. After 47 minutes, the top surface temperature of the upper stainless steel cylinder 5 reached 68.1℃. After 50 minutes, the top surface temperature reached 70.7℃. After 50 minutes and 20 seconds, the power was reduced to 250W and heating continued. At this point, the boiling sound of the water at a distance of 30cm from the sound source had completely disappeared, and only the 1000W circular heating element electric furnace 1 remained at 25℃. The faint sound during 0W heating was inaudible at a distance of 50cm from the source. When heated continuously at 250W for a total of 9 hours, the top surface temperature of the upper stainless steel cylinder 5 remained stable at 51.3℃. The 1060g of water in the lower stainless steel cylinder 4 decreased by 72g after 9 hours of continuous heating, averaging a decrease of 8g per hour. During the first 50 minutes of heating, the water in the lower stainless steel cylinder 4 decreased more, while during the 8 hours and 10 minutes of the constant temperature phase, the water in the lower stainless steel cylinder 4 decreased by only 5-6g per hour. Example 4. A 1000W circular heating element electric furnace 1 is used in conjunction with a stepless temperature and voltage regulator 2, a circular ceramic cooktop microcrystalline panel 3, an upper stainless steel cylinder 5, a lower stainless steel cylinder 4, and water. The 1000W circular heating element electric furnace 1 is covered with a 160mm diameter circular ceramic cooktop microcrystalline panel 3. The lower stainless steel cylinder 4 has an inner diameter of 24cm at the top, a height of 40cm, and an outer diameter of 20.5cm at the bottom. The bottom of the lower stainless steel cylinder 4 is connected to the top of the heating element 9 of the circular heating element electric furnace 1. The distance between the parts is 4.5mm, including the thickness of the 3.5mm of the microcrystalline panel 3 of the circular electric ceramic stove; the dimensions of the upper stainless steel cylinder 5 are an outer diameter of 23.8cm at the open end and a height of 100cm; the outer side of the open end of the upper stainless steel cylinder 5, which has no protruding edge, has the same slope as the inner side of the open end of the lower stainless steel cylinder 4, which is sealed and connected. The height of the combined assembly of the upper stainless steel cylinder 5 and the lower stainless steel cylinder 4, whose open ends are inserted into and overlapped and sealed together, is 138cm. A 1 970 grams of water; the 1000W circular heating element electric furnace 1, connected to the stepless temperature and voltage regulator 2, was reduced to 500W to heat the water in the lower stainless steel cylinder 4. After 47 minutes of heating, the top surface temperature of the upper stainless steel cylinder 5 reached 68.1℃. After 50 minutes of heating, the top surface temperature of the upper stainless steel cylinder 5 reached 70.7℃. After 50 minutes and 20 seconds of heating, the power was reduced to 250W and heating continued. At this point, the boiling sound of the water at a distance of 30cm from the sound source had completely disappeared, and only the 1000W circular heating element electric furnace 1 was heating at 250W. The sound was so faint that it was inaudible at a distance of 50cm from the source. When heated continuously at 250W for a total of 48 hours, the top surface temperature of the upper stainless steel cylinder 5 remained stable at 51.9℃. The 1970g of water in the lower stainless steel cylinder 4 decreased by 105g after 48 hours of continuous heating, averaging a decrease of 2.19g per hour. During the first 50 minutes of heating, the water in the lower stainless steel cylinder 4 decreased more, while during the 48 hours and 10 minutes of the constant temperature phase, the water in the lower stainless steel cylinder 4 decreased by only 1.67g per hour. Example 5. A 1000W circular heating element electric furnace 1 is selected and used in conjunction with a stepless temperature and voltage regulator 2, a circular ceramic cooktop microcrystalline panel 3, an upper stainless steel cylinder 5, a lower stainless steel cylinder 4, and water. A 2000W stepless temperature and voltage regulator 2 and a 1000W circular heating element electric furnace 1 are covered with a 160mm diameter circular ceramic cooktop microcrystalline panel 3. The dimensions of the lower stainless steel cylinder 4 are: an inner diameter of 24cm at the top opening, a height of 40cm, and an outer diameter at the bottom. The diameter is 20.5cm. The distance between the bottom of the lower stainless steel cylinder 4 and the top of the heating wire 9 of the circular heating element furnace 1 is 4.5mm, including the thickness of the 3.5mm microcrystalline panel 3 of the circular ceramic furnace. The dimensions of the upper stainless steel cylinder 5 are an outer diameter of 23.8cm at the open end and a height of 100cm. The outer side of the open end of the upper stainless steel cylinder 5, which has no protruding edge, is in a tight fit with the inner side of the open end of the lower stainless steel cylinder 4. The slopes of the connecting parts are the same. The height of the combined assembly, where the open ends of the upper stainless steel cylinder 5 and the lower stainless steel cylinder 4 are inserted into and overlapped to form a sealed connection, is 138cm. 2800g of water is placed in the lower stainless steel cylinder 4. The power of the 1000W circular heating element electric furnace 1, connected to the stepless temperature and voltage regulator 2, is reduced to 500W to heat the water in the lower stainless steel cylinder 4. When the top surface temperature of the upper stainless steel cylinder 5 reaches 50℃, the power is reduced to 250W-300W to continue heating. After 240 hours of continuous heating, the top surface temperature of the upper stainless steel cylinder 5 remains between 48℃ and 52℃. During 240 hours of continuous heating, the amount of water in the lower stainless steel cylinder 4 decreases by 200g, an average decrease of 0.83g per hour. The 2000-2800g of water in the lower stainless steel cylinder 4 can be continuously heated for 50-60 days using a power of 250W-300W. Example 6. A 1000W circular heating element electric furnace 1 is used in conjunction with a stepless temperature and voltage regulator 2, a circular ceramic cooktop microcrystalline panel 3, an upper stainless steel cylinder 5, a lower stainless steel cylinder 4, and water. The 1000W circular heating element electric furnace 1 is covered with a 160mm diameter circular ceramic cooktop microcrystalline panel 3. The dimensions of the lower stainless steel cylinder 4 are: upper inner diameter 24cm, height 40cm, and bottom outer diameter 20.5cm. The bottom of the lower stainless steel cylinder 4... The distance between the upper stainless steel cylinder 5 and the top of the heating wire 9 of the circular heating element furnace 1 is 4.5mm, including the thickness of the microcrystalline panel 3 of the circular ceramic furnace 3 (3.5mm). The upper stainless steel cylinder 5 has an outer diameter of 23.8cm at the open end and a height of 100cm. The outer side of the open end of the upper stainless steel cylinder 5, which has no protruding edge, and the inner side of the open end of the lower stainless steel cylinder 4 are connected by a sealed connection with the same slope. The openings of the upper stainless steel cylinder 5 and the lower stainless steel cylinder 4 are connected by a sealed connection. The combined structure, with its overlapping and sealed connections, has a height of 138cm. 1500g of water is placed in the lower stainless steel cylinder 4. A 1000W circular heating element electric heater 1, connected to a stepless temperature and voltage regulator 2, heats the water to boiling. The heating power is then reduced to 400W to heat the water in the lower stainless steel cylinder 4 continuously for 12 hours, maintaining a temperature of 54℃~59℃ at the top of the upper stainless steel cylinder 5. This is suitable for indoor heating during the day when the outdoor temperature is -5℃. The heating device produces approximately 20 decibels of noise at 400W, achieving a stable temperature of 24℃ in a 15 square meter room. At -6℃, with 300W heating, the noise is inaudible at a distance of 100cm from the source. A 300W heating system can stably maintain a temperature of 22.5℃~23℃ in a 15 square meter room, a temperature close to that of a hospital ward, providing a comfortable and warm environment. Example 7. In Binhai New Area, Tianjin, from December 1, 2024 to December 31, 2024, a residential unit with a building area of ​​55.47 square meters and an internal heating billing area of ​​42.31 square meters (two rooms facing north and south) applied to have its central heating service discontinued. The aforementioned heating device was able to maintain the temperature of each room within the range of 21℃ to 23℃. The indoor heating cost during this period was 134.13 yuan per month. From October 20, 2024 to November 30, 2024, this residential unit used the aforementioned heating device for 40 consecutive days to maintain the temperature of each room within the range of 20℃ to 22.9℃. The indoor heating cost for the aforementioned period was 49.30 yuan / 40 days. Before December 8, 2024, the glass windows of the north-facing rooms were not completely closed, but were always opened by 8cm to maintain indoor air circulation. From November 13, 2024 to January 23, 2025, the aforementioned heating device was used for 72 consecutive days to maintain the temperature of each room in the range of 20℃ to 23℃. The indoor heating cost for the aforementioned period was 248.01 yuan / 72 days. The central heating in the rooms of the adjacent residential units was also suspended. From December 23, 2024 to January 23, 2025, the room temperature was in the range of 14.3℃ to 15.8℃. January 23, 2025, will be the seventh day of the fourth nine-day period of winter, marking the coldest time of the year. Temperatures in Tianjin will gradually rise after mid-February. On October 19, 2024, the temperature in Tianjin's Binhai New Area ranged from 4℃ to 11℃. Starting October 20, 2024, self-heating will be implemented. Based on current estimated indoor heating costs, from October 20, 2024, until the end of the centralized heating season on March 15, 2024, plus an additional 16 days of self-heating until March 31, the estimated cost for self-heating over five months and 12 days is 516 yuan. This will maintain the temperature in each room within a comfortable range of 20℃ to 23℃. Example 8. In Binhai New Area, Tianjin, from October 20, 2024 to March 31, 2025, a residential unit with a building area of ​​55.47 square meters and an internal heating billing area of ​​42.31 square meters (two rooms facing north and south) applied for the cessation of centralized heating. Using the aforementioned heating device, the temperature of each room was maintained within the range of 20℃ to 23℃. The total actual heating cost during this period was 457.04 yuan. The indoor temperature was adjusted and controlled according to actual needs in different rooms and at different times. From April 1, 2025 to April 9, 2025, the lowest outdoor temperature in Binhai New Area, Tianjin, was between 7℃ and 9℃. It was still slightly chilly for the elderly at night. The indoor temperature was adjusted according to the daily changes. From April 1, 2025 to April 28, 2025, a total of 28 days, the total actual heating cost was 30.84 yuan, achieving a comfortable and warm environment. From October 20, 2024 to April 28, 2025, I only went out on March 27 and March 28 and did not heat the house myself. For the remaining 6 months and 7 days, I heated the house myself. I meticulously recorded the daily outdoor temperature, indoor temperature, and changes in the actual heating costs shown on the electricity meter. The heating device described above also achieved suitable indoor humidity. Industrial applicability Regarding the industrial applicability of this invention: Central heating requires a large initial investment and incurs high operating and maintenance costs, making it difficult to implement in areas with short winters and dispersed residential populations. Crucially, the heating cost of the indoor heating method of this invention is far lower than that of central heating. Central heating cannot control or adjust the time and temperature as needed, and this invention can completely replace central heating. The heating element of the heating device of this invention has a simple structure, low manufacturing cost, and long-term usability. In the tenth heating method of this invention, the heating element is a combination of a specially designed stainless steel intermediate connecting sleeve and two ordinary stainless steel cylinders. The upper and lower heating elements are selected from existing universal components with matching structural dimensions, ordered according to actual requirements in terms of specifications and quantity. This results in a short production cycle, timely delivery, and no inventory backlog. The specially designed stainless steel intermediate connecting sleeve is manufactured by a professional manufacturer; payment is made only after the goods are inspected and accepted, ensuring zero inventory. The heating device can be assembled at a retail store using other universal components or specially designed supporting components as needed, allowing for heating tests. Other heating methods and improvements to the added technical features also offer significant technical advantages and economic benefits. The manufacturing process of the heating device of this invention, completed according to the above methods, requires only a small amount of capital to complete and initiate the promotion and popularization of the heating method of this invention. On-site demonstrations of the beneficial effects and significant advantages of this invention in different regions will allow those who need it to fully understand it. Sequence List Free Content Type the free content description paragraph for the sequence list here.

Claims

1. A method for indoor heating, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... The outer side of the opening end of the upper stainless steel cylinder (5) has no protruding edge. The outer structure of the opening end of the upper stainless steel cylinder (5) is designed to be able to be inserted into the inner side of the opening end of the lower stainless steel cylinder (4) and form a tight fit. The slope of the outer side of the opening end of the upper stainless steel cylinder (5) without protruding edge and the inner side of the opening end of the lower stainless steel cylinder (4) are the same. The length of the overlapping part of the two opening ends of the upper stainless steel cylinder (5) and the lower stainless steel cylinder (4) can ensure a stable connection. Two handles (10) are provided at the opening end of the lower stainless steel cylinder (4). Two handles (11) are provided at the open end; the circular ceramic cooker microcrystalline panel (3) completely covers the top of the refractory furnace plate (8) of the circular heating wire furnace (1); the power cord plug of the stepless temperature and voltage regulator (2) is connected to the power socket; the plug of the furnace plug wire of the circular heating wire furnace (1) is connected to the socket of the stepless temperature and voltage regulator (2); the lower stainless steel cylinder (4) is placed on the circular heating wire furnace (1) covered with the circular ceramic cooker microcrystalline panel (3); the circular ceramic cooker microcrystalline panel (3) is in direct contact with the top of the refractory furnace plate (8) of the circular heating wire furnace (1); the bottom of the lower stainless steel cylinder (4) is in contact with the top of the circular heating wire furnace (1). The circular ceramic cooker's microcrystalline panel (3) is in direct contact with the lid, shortening the distance between the bottom of the lower stainless steel cylinder (4) and the top of the heating wire (9) of the circular heating element cooker (1) can improve the heating effect; three through-hole downward fixing nuts (6) are welded at equal intervals on the outer diameter of the lower stainless steel cylinder (4), and the upper external threads of the prepared three support rods (7) are connected to the internal threads of the three through-hole downward fixing nuts (6), and the lower bottom of the three support rods (7) connected to the internal threads of the three through-hole downward fixing nuts (6) are in contact with the floor. Rotating and adjusting the three support rods (7) can stabilize the lower stainless steel cylinder (4) and reduce the impact on the circular heating element cooker (1). The pressure of ); Three fixed guide plates (73) are respectively set between the three prepared support rods (7) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) and the three support legs (68) of the circular heating wire furnace (1) are fixedly connected; The three support rods (7) of the lower stainless steel cylinder (4) are positioned and lowered through the three fixed guide plates (73); Limiting the weight of water added to the lower stainless steel cylinder (4) is one of the necessary conditions for obtaining the ideal effect of low power and low cost heating. When the height of water added to the lower stainless steel cylinder (4) is 3 to 8 cm, the ideal effect of low power and low cost heating can be obtained.Water is injected into the lower stainless steel cylinder (4), and the open end of the upper stainless steel cylinder (5) is inserted downward into the inside of the open end of the lower stainless steel cylinder (4). The two stainless steel cylinders are sealed together to form a sealed space. The power is turned on and the circular heating element electric furnace (1) is turned on to heat the water added to the lower stainless steel cylinder (4). The water vapor generated after the water is heated and boiled heats the upper stainless steel cylinder (5) and the lower stainless steel cylinder (4). The rising water vapor cools down and the condensed water falls back into the lower stainless steel cylinder (4). The water vapor generated after being heated moves upward continuously, and so on. After the water is heated to boiling, the power of the circular heating element furnace (1) is reduced by adjusting the stepless temperature and pressure regulator (2). The heat energy conversion and transmission are completed under the condition that the water vapor does not leak out, and a very good heating effect is achieved. The effective increase in the height and diameter of the combination formed by the connection of the two open stainless steel cylinders can increase the volume of the sealed space. Under the condition that the high temperature water vapor does not leak out, its capacity increases. When the heating power of the circular heating element furnace (1) is increased, the water vapor storage space generated by the upward movement is increased, and the outer surface area of ​​the combination formed by the connection of the two open stainless steel cylinders increases. The heat dissipation area of ​​the above-mentioned combination is expanded and the heating effect is improved; the key to achieving the ideal heating effect is to improve the top surface temperature of the upper stainless steel cylinder (5) in the above-mentioned indoor heating method by adopting a low-cost and low-noise method: after the water injected into the lower stainless steel cylinder (4) is heated to boiling, the stepless temperature and pressure regulator (2) is adjusted, the power of the circular heating wire furnace (1) is reduced, and the circular heating wire furnace (1) is put into the constant temperature heating stage. The water injected into the lower stainless steel cylinder (4) is in a low-power heating state and continuously boils, which can reduce the noise to <20dB; when selecting the circular heating wire furnace (1) Using a low-power constant temperature stage of 200W to 300W, the heating is continuously applied for 24 hours. During this period, the electricity meter shows that the electricity consumption is RMB 0.10 to RMB 0.15 per hour. The top surface temperature of the upper stainless steel cylinder (5) can still stably reach 45℃ to 55℃. No sound can be heard at a distance of 30cm from the sound source. For an indoor area of ​​15 to 18 square meters, when the sum of the outer surface areas of the upper stainless steel cylinder (5) and the lower stainless steel cylinder (4) reaches 7000 to 15000 square centimeters, the temperature of the top surface of the upper stainless steel cylinder (5) and the outer surface of the lower stainless steel cylinder (4) are higher than that of traditional centralized heating. The outer surface temperature of the radiator in the heated room is sufficient to meet the heating needs in winter; too much water in the lower stainless steel cylinder (4) will reduce the boiling state of the water and reduce the heating effect; during the continuous heating process, the water weight reduction in the lower stainless steel cylinder (4) during the evaporation of water into water vapor is 1 to 25 grams per hour. The same amount of water should be replenished regularly according to the amount of water reduction each day to ensure that the water in the lower stainless steel cylinder (4) produces a better water vapor heating effect when boiling; the bottom of the lower stainless steel cylinder (4) should be cleaned and wiped regularly to maintain the heat conduction effect of the lower stainless steel cylinder (4).

2. A method for indoor heating according to claim 1, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... A round ceramic cooker black crystal panel (12) of the same size is selected to replace the round ceramic cooker microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the round heating wire electric furnace (1); a lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is selected to replace the lower stainless steel cylinder (4). The outer diameter of the bottom of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is the same as that of the round ceramic cooker black crystal panel (12) or the round ceramic cooker microcrystalline panel covering the top of the refractory furnace plate (8) of the round heating wire electric furnace (1). 3) Same outer diameter; the slope of the inner side of the opening end of the lower stainless steel cylinder (13) with a lower end truncated circular cone shape and the outer side of the opening end of the upper stainless steel cylinder (18) without an outward protrusion edge are the same, and the length of the overlapping part of the two opening ends of the upper stainless steel cylinder (18) and the lower stainless steel cylinder (13) with a lower end truncated circular cone shape can ensure that the connection is stable; a reinforcing rib (19) is provided on the inner side of the opening end of the upper stainless steel cylinder (18), and a reinforcing rib (19) is provided on the outer side of the opening end of the lower stainless steel cylinder (13) with a lower end truncated circular cone shape. The upper stainless steel cylinder (18) and the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom are provided with reinforcing ribs (14) to improve the deformation resistance of the upper stainless steel cylinder (18) and the opening of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom. Under the condition of meeting the depth requirements of the heating wire (9) of the circular heating wire furnace (1), the depth of the groove for the heating wire (9) of the refractory furnace plate (8) of the circular heating wire furnace (1) is reduced, and the bottom of the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom is in direct contact with the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1), shortening the truncated circular cone shape at the bottom. The distance between the bottom of the lower stainless steel cylinder (13) with the shape of a perfect cone and the top of the heating wire (9) of the circular heating wire furnace (1) can further improve its heating effect; the heating wire (9) is supported and isolated by an insulated high-temperature resistant ceramic tube and a refractory furnace plate (8) to minimize the contact area between the heating wire (9) and the refractory furnace plate (8); the top of the heating wire (9) contacts the bottom surface of the covered circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) to transfer more of the heat generated by the heating wire (9) to the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3);Three fixing nuts (16) with downward-facing through holes are welded at equal intervals on the outer diameter of the lower part of the lower stainless steel barrel (13), which has a truncated circular cone shape at the bottom. The upper external threads of the three prepared support rods (17) are connected to the internal threads of the three fixing nuts (16) with downward-facing through holes. The bottom of the lower end of the three support rods (17) connected to the internal threads of the three fixing nuts (16) with downward-facing through holes is in contact with the floor. Rotating and adjusting the three support rods (17) can stabilize the lower stainless steel barrel (13) with a truncated circular cone shape at the bottom. Reduce the pressure on the circular heating wire furnace (1); three fixed guides (73) are respectively set between the three prepared support rods (17) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (17) of the lower stainless steel cylinder (13) with the lower end being a flat truncated cone shape are positioned and lowered through the three fixed guide plates (73); the lower stainless steel cylinder (13) with the lower end being a flat truncated cone shape is not The maximum volume of the lower part of the stainless steel cylinder (13) with a truncated circular cone shape, which occupies the upper limit of the volume of water required to be added when heating the lower stainless steel cylinder (13) with a truncated circular cone shape; limiting the weight of water added to the lower stainless steel cylinder (13) with a truncated circular cone shape is one of the necessary conditions to achieve the ideal effect of low-power, low-cost heating. The height of the water added to the lower stainless steel cylinder (13) with a truncated circular cone shape is 3. At a thickness of ~11cm, an ideal heating effect with low power and low cost can be achieved; two handles (15) are provided at the open end of the lower stainless steel cylinder (13), which has a flat truncated circular cone shape at the bottom, and two handles (20) are provided at the open end of the upper stainless steel cylinder (18); high-strength refractory material is selected to make the refractory furnace plate (8) of the circular heating wire furnace (1), and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1).

3. A method for indoor heating according to claim 1, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... Replace the lower stainless steel cylinder (4) with a lower cylinder (21) made of copper or aluminum with good thermal conductivity. Replace the microcrystalline panel (3) of the circular electric ceramic furnace with a circular black crystal panel (12) of the same size. Cover the top of the refractory furnace plate (8) of the circular heating wire furnace (1). The slope of the inner side of the opening end of the lower cylinder (21) made of copper or aluminum and the outer side of the opening end of the upper stainless steel cylinder (26) are the same. The length of the overlapping part of the two opening ends of the lower cylinder (21) made of copper or aluminum and the upper stainless steel cylinder (26) can ensure that the connection is stable. For the lower cylindrical barrel (21) made of copper or aluminum, three fixing nuts (24) with downward-facing through holes are welded at equal intervals on the outer diameter of the lower part. The upper external threads of the three prepared support rods (25) are connected to the internal threads of the three fixing nuts (24) with downward-facing through holes. The lower bottom of the three support rods (25) connected to the internal threads of the three fixing nuts (24) with downward-facing through holes is in contact with the floor. Rotating and adjusting the three support rods (25) can stabilize the lower cylindrical barrel (21) made of copper or aluminum and reduce the pressure on the circular heating wire furnace (1). The three prepared support rods (25) and the circular heating wire furnace (1) are connected to the floor. Three fixed guide plates (73) are respectively set between the three support legs (68) of the circular heating element furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating element furnace (1); the three support rods (25) of the lower cylindrical barrel (21) made of copper or aluminum are positioned and lowered through the three fixed guide plates (73); limiting the weight of water added to the lower cylindrical barrel (21) made of copper or aluminum is one of the necessary conditions for obtaining the ideal effect of low power and low cost heating. When the height of water added to the lower cylindrical barrel (21) made of copper or aluminum is 3 to 8 cm, low power can be obtained. Ideal for low-cost heating; a reinforcing rib (27) is provided on the inner side of the opening end of the upper stainless steel cylinder (26), and a reinforcing rib (22) is provided on the outer side of the opening end of the lower cylinder (21) made of copper or aluminum, to improve the deformation resistance of the upper stainless steel cylinder (26) and the opening end of the lower cylinder (21) made of copper or aluminum; two handles (23) are provided on the opening end of the lower cylinder (21) made of copper or aluminum, and two handles (28) are provided on the opening end of the upper stainless steel cylinder (26); in order to reduce manufacturing costs, the height of the lower cylinder (21) made of copper or aluminum is reduced.

4. A method for indoor heating according to claim 1, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... Replace the lower stainless steel cylinder (4) with a lower cylindrical barrel (29) made of copper or aluminum with a truncated conical shape at the bottom, which has good thermal conductivity. Replace the circular ceramic stove microcrystalline panel (3) with a circular ceramic stove black crystal panel (12) of the same size, which covers the top of the refractory furnace plate (8) of the circular heating wire furnace (1). Under the condition of meeting the depth requirements for placing the heating wire (9) of the circular heating wire furnace (1), reduce the depth of the groove for placing the heating wire (9) in the refractory furnace plate (8) of the circular heating wire furnace (1), and shorten the distance between the bottom of the lower cylindrical barrel (29) made of copper or aluminum with a truncated conical shape at the bottom and the top of the heating wire (9) of the circular heating wire furnace (1). The distance between them can further improve their heating effect; high-strength refractory materials are selected to make the refractory furnace plate (8) of the circular heating wire furnace (1) and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1); a reinforcing rib (35) is provided on the inner side of the opening end of the upper stainless steel cylinder (34), and a reinforcing rib (30) is provided on the outer side of the opening end of the lower cylinder (29) made of copper or aluminum material with a flat truncated circular cone shape to improve the deformation resistance of the upper stainless steel cylinder (34) and the opening end of the lower cylinder (29) made of copper or aluminum material with a flat truncated circular cone shape; copper or The outer diameter of the bottom of the lower cylindrical barrel (29) made of aluminum with a truncated circular cone shape is smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape is the same as the outer diameter of the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the circular heating wire furnace (1). The inner side of the opening end of the lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape has the same slope as the outer side of the opening end of the inserted upper stainless steel cylindrical barrel (34). The lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape and the upper stainless steel cylindrical barrel have the same slope. (34) The length of the two open end connection ports inserted into the overlapping part can ensure that the connection is stable; three through holes downward fixing nuts (32) are welded at equal intervals at the outer diameter of the lower part of the lower cylinder (29) with a flat truncated circular cone shape at the lower end made of copper or aluminum material. The upper external threads of the three prepared support rods (33) are connected to the internal threads of the three through holes downward fixing nuts (32). The lower bottom of the three support rods (33) connected to the internal threads of the three through holes downward fixing nuts (32) is in contact with the floor. Rotating and adjusting the three support rods (33) can stabilize the lower cylinder (29) with a flat truncated circular cone shape at the lower end made of copper or aluminum material, and reduce the pressure on the circular heating wire electric furnace (1).Three fixed guide plates (73) are respectively set between the three prepared support rods (33) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) and the three support legs (68) of the circular heating wire furnace (1) are fixedly connected. The three support rods (33) of the lower cylinder (29) made of copper or aluminum material with a truncated circular cone shape at the bottom are positioned and lowered through the three fixed guide plates (73). The maximum volume of the lower cylinder (29) with a truncated circular cone shape at the bottom is sufficient to meet the upper limit of the water required to be added when the lower cylinder (29) with a truncated circular cone shape at the bottom is heated. The volume occupied; limiting the weight of water added to the lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape at the bottom is one of the necessary conditions for achieving the ideal effect of low-power, low-cost heating. When the height of water added to the lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape at the bottom is 3 to 11 cm, the ideal effect of low-power, low-cost heating can be achieved. Two handles (31) are provided at the open end of the lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape at the bottom, and two handles (36) are provided at the open end of the upper stainless steel cylindrical barrel (34). To reduce manufacturing costs, the height of the lower cylindrical barrel (29) made of copper or aluminum with a truncated circular cone shape at the bottom is reduced.

5. A method for indoor heating according to claim 1, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... Replace the lower stainless steel cylinder (4) with a lower cylinder (37) made of copper or aluminum with a truncated conical shape at the bottom, and replace the upper stainless steel cylinder (5) with an upper cylinder (42) made of copper or aluminum. Replace the circular ceramic stove microcrystalline panel (3) with a circular ceramic stove black crystal panel (12) of the same size on top of the refractory furnace plate (8) of the circular heating element furnace (1). Under the condition of meeting the depth requirements for placing the heating element (9) of the circular heating element furnace (1), reduce the depth of the groove for placing the heating element (9) in the refractory furnace plate (8) of the circular heating element furnace (1), and shorten the bottom of the lower cylinder (37) made of copper or aluminum with a truncated conical shape at the bottom. The distance between the part and the top of the heating wire (9) of the circular heating wire furnace (1) can further improve its heating effect; high-strength refractory material is selected to make the refractory furnace plate (8) of the circular heating wire furnace (1) and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1); a reinforcing rib (38) is provided on the outside of the opening end of the lower cylinder (37) made of copper or aluminum material with a flat truncated circular cone shape to improve the deformation resistance of its opening end; a reinforcing rib (43) is provided on the inside of the opening end of the upper cylinder (42) made of copper or aluminum material to improve the deformation resistance of its opening end; copper The outer diameter of the bottom of the lower cylindrical barrel (37) made of aluminum or copper with a truncated circular cone shape is smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower cylindrical barrel (37) made of copper or aluminum with a truncated circular cone shape is the same as the outer diameter of the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the circular heating electric furnace (1). The inner side of the opening end of the lower cylindrical barrel (37) made of copper or aluminum with a truncated circular cone shape has the same slope as the outer side of the opening end of the upper cylindrical barrel (42) made of copper or aluminum with a truncated circular cone shape. The lower cylindrical barrel (37) made of copper or aluminum with a truncated circular cone shape is connected to the upper cylindrical barrel (42) made of copper or aluminum with a truncated circular cone shape. The length of the two open ends of the upper cylindrical barrel (42) made of copper or aluminum is sufficient to ensure a stable connection. The lower cylindrical barrel (37) made of copper or aluminum with a flat truncated cone shape at the bottom end has three fixed nuts (40) with downward-facing through holes welded at equal intervals at the outer diameter of the lower end. The upper external threads of the three prepared support rods (41) are connected to the internal threads of the three fixed nuts (40) with downward-facing through holes. The bottom of the lower end of the three support rods (41) connected to the internal threads of the three fixed nuts (40) with downward-facing through holes is in contact with the floor. Rotating and adjusting the three support rods (41) can stabilize the lower cylindrical barrel (37) made of copper or aluminum with a flat truncated cone shape at the bottom end, reducing the pressure on the circular heating element furnace (1).Three fixed guide plates (73) are respectively set between the three prepared support rods (41) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) and the three support legs (68) of the circular heating wire furnace (1) are fixedly connected. The three support rods (41) of the lower cylinder (37) made of copper or aluminum material with a truncated circular cone shape at the bottom are positioned and lowered through the three fixed guide plates (73). The maximum volume of the lower cylinder (37) with a truncated circular cone shape at the bottom of the lower cylinder (37) made of copper or aluminum material can meet the above requirements. The upper limit of the volume occupied by the water required to heat the bucket (37); limiting the weight of water added to the lower cylindrical bucket (37) made of copper or aluminum with a truncated circular cone shape at the bottom is one of the necessary conditions for achieving the ideal effect of low-power, low-cost heating. When the height of water added to the lower cylindrical bucket (37) made of copper or aluminum with a truncated circular cone shape at the bottom is 3 to 11 cm, the ideal effect of low-power, low-cost heating can be achieved. Two handles (39) are provided at the open end of the lower cylindrical bucket (37) made of copper or aluminum with a truncated circular cone shape at the bottom, and two handles (44) are provided at the open end of the upper cylindrical bucket (42) made of copper or aluminum.

6. A method for indoor heating according to claim 1, wherein the method comprises a circular heating element (1) and a stepless temperature and voltage regulator (2), a circular ceramic heater microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... The lower stainless steel pot (45) with a truncated circular cone shape at the bottom is selected to replace the lower stainless steel barrel (4). The bottom of the lower stainless steel pot (45) with a truncated circular cone shape at the bottom is in direct contact with the circular ceramic ceramic panel (3) covering the circular heating element electric furnace (1). Shortening the distance between the bottom of the stainless steel pot (45) with a truncated circular cone shape at the bottom and the top of the heating element (9) of the circular heating element electric furnace (1) can further improve its heating effect. The outer diameter of the bottom of the lower stainless steel pot (45) with a truncated circular cone shape at the bottom is smaller than the outer diameter of its opening end. The outer diameter of the bottom of the lower stainless steel pot (45), which has a flat-topped circular cone shape, is the same as the outer diameter of the circular ceramic ceramic panel (3) covering the top of the refractory heating plate (8) of the circular heating element electric furnace (1). The slope of the inner side of the opening end of the lower stainless steel pot (45) and the outer side of the opening end of the inserted upper stainless steel cylinder (49) are the same. The length of the overlapping part of the two opening ends and the connection port of the lower stainless steel pot (45) and the upper stainless steel cylinder (49) can ensure their connection. Stable; a reinforcing rib (50) is provided on the inner side of the opening end of the upper stainless steel cylinder (49) to improve the deformation resistance of the opening end of the upper stainless steel cylinder (49); three fixing nuts (47) with downward-facing through holes are welded at equal intervals at the outer diameter of the lower end of the lower stainless steel pot (45), which has a flat truncated circular cone shape at the lower end; the upper external threads of the three prepared support rods (48) are connected to the internal threads of the three fixing nuts (47) with downward-facing through holes; the lower bottom of the three support rods (48) connected to the internal threads of the three fixing nuts (47) with downward-facing through holes contacts the floor; rotation adjustment The three support rods (48) can stabilize the lower stainless steel pot (45) with a flat, truncated conical shape at the bottom, reducing the pressure on the circular heating wire furnace (1); three fixed guide plates (73) are respectively set between the prepared three support rods (48) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (48) of the lower stainless steel pot (45) with a flat, truncated conical shape at the bottom are positioned and lowered through the three fixed guide plates (73);The maximum volume of the lower stainless steel pot (45) with a truncated circular cone shape at the bottom can satisfy the upper limit of the volume occupied by the water required to heat the lower stainless steel pot (45). Limiting the weight of water added to the lower stainless steel pot (45) is one of the necessary conditions to achieve the ideal effect of low-power, low-cost heating. When the height of water added to the lower stainless steel pot (45) is 3 to 11 cm, the ideal effect of low-power, low-cost heating can be achieved. Two handles (46) are provided at the opening end of the lower stainless steel pot (45) with a truncated circular cone shape, and two handles (51) are provided at the opening end of the upper stainless steel cylinder (49). The above-mentioned heating During the process, a circular stainless steel steaming rack (52) made of uniformly spaced stainless steel wires is placed in the lower stainless steel pot (45), which has a flat, truncated conical shape at the bottom. This facilitates the heating of food by high-temperature steam. Under ideal conditions, it can steam buns, steamed cakes, steamed sweet potatoes, steamed rice, etc., while simultaneously heating. Alternatively, various foods can be stewed in the lower stainless steel pot (45). A circular stainless steel steaming rack (53) with a diameter smaller than the inner diameter of the bottom of the lower stainless steel pot (45) is placed in the lower stainless steel pot (45) to isolate the food from the bottom of the lower stainless steel pot (45) and prevent the stewed food from sticking to the bottom of the lower stainless steel pot (45) or burning during heating.

7. A method for indoor heating according to claim 2, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (13) having a truncated conical shape at the lower end, and water, wherein the water added to the lower stainless steel cylinder (13) is heated to boiling to generate steam for indoor heating, characterized in that... A lower stainless steel pot (54) with a truncated circular cone shape at the bottom is selected to replace the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom. The bottom of the lower stainless steel pot (54) with a truncated circular cone shape at the bottom is in direct contact with the circular ceramic black crystal panel (12) covering the circular heating wire electric stove (1). Shortening the distance between the bottom of the stainless steel pot (54) with a truncated circular cone shape at the bottom and the top of the heating wire (9) of the circular heating wire electric stove (1) can further improve its heating effect. A structure (63) of combined and stacked concave stainless steel steamers of the same structural size is placed on the upper stainless steel cylinder (58) and the lower stainless steel cylinder (13) with a truncated circular cone shape at the bottom. In the middle of the lower stainless steel pot (54), since a structure (63) of the same structural size of concave stainless steel steamers is added between the upper stainless steel cylinder (58) and the lower stainless steel pot (54) with a flat, truncated cone shape at the bottom, the height of the upper stainless steel cylinder (58) should be reduced. In the structure (63) of the concave stainless steel steamers of the same structural size, the bottom of each steamer is made of stainless steel wire evenly distributed at equal intervals, which is conducive to the heating of food by high-temperature water steam. In order to reduce the resistance to the rise of water steam generated in the lower stainless steel pot (54) with a flat, truncated cone shape at the bottom, the concave stainless steel steamers of the same structural size are stacked together. In the structure (63), the bottom of each steamer is removed and replaced with a structure of uniformly spaced stainless steel wires. The area of ​​the bottom of the bottomless concave stainless steel steamer covered by all the uniformly spaced stainless steel wires is less than 15%, which enhances the flow of water vapor and the heating effect. The upper concave structure and the lower boss structure of each concave stainless steel steamer in the structure (63) of the combination and stacking of concave stainless steel steamers of the same structural size are retained. The structure (63) of the combination and stacking of concave stainless steel steamers of the same structural size can be sealed and connected with the upper stainless steel cylinder (58) and the lower stainless steel pot (54) with a flat truncated conical shape at the bottom. A reinforcing rib (59) is provided on the inner side of the end part to improve the deformation resistance of the upper stainless steel barrel (58); three fixing nuts (56) with downward through holes are welded at equal intervals at the outer diameter of the lower stainless steel pot (54) with a flat truncated circular cone shape at the lower end. The upper external threads of the prepared three support rods (57) are connected to the internal threads of the three fixing nuts (56) with downward through holes. The bottom of the lower end of the three support rods (57) connected to the internal threads of the three fixing nuts (56) with downward through holes is in contact with the floor. Rotating and adjusting the three support rods (57) can stabilize the lower stainless steel pot (54) with a flat truncated circular cone shape at the lower end and reduce the pressure on the circular heating wire electric furnace (1).Three fixed guide plates (73) are respectively set between the three prepared support rods (57) and the three support legs (68) of the circular heating wire furnace (1). The three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1). The three support rods (57) of the lower stainless steel pot (54) with a lower end truncated circular cone shape are positioned and lowered through the three fixed guide plates (73). The lower end of the lower stainless steel pot (54) with a lower end truncated circular cone shape is truncated circular cone. The maximum volume of the cylindrical part can meet the upper limit of the volume occupied by the water required when heating the lower stainless steel pot (54) with a truncated circular cone shape at the bottom. Limiting the weight of water added into the lower stainless steel pot (54) with a truncated circular cone shape at the bottom is one of the necessary conditions to achieve the ideal effect of low-power and low-cost heating. When the height of water added into the lower stainless steel pot (54) with a truncated circular cone shape at the bottom is 3 to 11 cm, the ideal effect of low-power and low-cost heating can be achieved. Two handles (55) are provided at the opening end of the lower stainless steel pot (54), which has a truncated conical shape at the bottom, and two handles (60) are provided at the opening end of the upper stainless steel cylinder (58). During the heating process, a circular stainless steel steaming rack (61) made of uniformly spaced stainless steel wires is placed in the lower stainless steel pot (54), which is conducive to heating food with high-temperature steam. Under ideal conditions, it can steam buns, steam cakes, steam sweet potatoes, steam rice, etc., or use a tool to heat food. A stainless steel lower pot (54) with a flat, truncated cone shape is used for stewing various foods. A circular stainless steel steaming rack (62), with a diameter smaller than the inner diameter of the bottom of the lower stainless steel lower pot (54), is placed inside the lower stainless steel lower pot (54) to isolate the food from the bottom of the lower stainless steel lower pot (54) during heating, preventing the food from sticking to the bottom of the lower stainless steel lower pot (54) and burning.

8. A method for indoor heating according to claim 2, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (13) having a truncated conical shape at the lower end, and water, wherein the water added to the lower stainless steel cylinder (13) is heated to boiling to generate steam for indoor heating, characterized in that... A lower cylindrical barrel (70) made of copper or aluminum with a truncated circular cone shape is selected to replace the bottom part of the lower stainless steel cylindrical barrel (13) with a truncated circular cone shape below the straight barrel part. The lower cylindrical barrel (67) of the heating device is firmly connected to the lower cylindrical barrel (67) of the heating device by means of folded edge interlocking, welding, or high-temperature adhesive bonding. The maximum volume of the lower cylindrical container (70), made of copper or aluminum with a flat-truncated conical shape at the bottom, can meet the upper limit of the volume occupied by the water required to heat the lower cylindrical container (67) of the heating device. Limiting the weight of water added to the lower cylindrical container (67) of the heating device is one of the necessary conditions for achieving the ideal effect of low-power, low-cost heating. When the height of water added to the lower cylindrical container (67) of the heating device is 3 to 11 cm, the ideal effect of low-power, low-cost heating can be achieved. Ensure that the bottom and sides of the heated water are in contact with the copper or aluminum material with good thermal conductivity to improve its heating effect. Select a suitable material. A circular ceramic cooker black crystal panel (12) or a circular ceramic cooker microcrystalline panel (3) of the same size covers the top of the refractory furnace plate (8) of the circular heating wire furnace (1); a lower cylindrical barrel (67) of the heating device replaces the lower stainless steel cylindrical barrel (13) with a truncated circular cone shape at the bottom. In the lower cylindrical barrel (67) of the heating device, the outer diameter of the bottom of the lower cylindrical barrel (70) made of copper or aluminum with a truncated circular cone shape is the same as the outer diameter of the circular ceramic cooker black crystal panel (12) or the circular ceramic cooker microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the circular heating wire furnace (1); the lower cylindrical barrel of the heating device ( The slope of the inner side of the opening end of the upper stainless steel cylinder (64) and the outer side of the opening end of the lower stainless steel cylinder (67) without an outward protrusion is the same. The length of the overlapping part of the two opening ends of the upper stainless steel cylinder (64) and the lower cylinder (67) of the heating device can ensure that the connection is stable. A reinforcing rib (65) is provided on the inner side of the opening end of the upper stainless steel cylinder (64), and a reinforcing rib (83) is provided on the outer side of the opening end of the lower cylinder (67) of the heating device, thereby improving the deformation resistance of the opening ends of the upper stainless steel cylinder (64) and the lower cylinder (67) of the heating device.Under the condition of meeting the depth requirements of the heating wire (9) of the circular heating wire furnace (1), the depth of the groove for placing the heating wire (9) in the refractory furnace plate (8) of the circular heating wire furnace (1) is reduced, and the bottom of the lower cylinder (67) of the heating device is in direct contact with the circular ceramic furnace black crystal panel (12) or the circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1), thus shortening the distance between the bottom of the lower cylinder (67) of the heating device and the circular heating wire furnace (1). 1) The distance between the tops of the heating element (9) can further improve its heating effect; three fixing nuts (71) with downward through holes are welded at equal intervals at the outer diameter of the straight barrel part of the lower barrel of the heating device; the upper external threads of the three prepared support rods (72) are connected to the internal threads of the three fixing nuts (71) with downward through holes; the lower bottom of the three support rods (72) connected to the internal threads of the three fixing nuts (71) with downward through holes are in contact with the floor. Rotating and adjusting the three support rods (72) can stabilize the lower cylinder (67) of the heating device and reduce the pressure on the circular heating wire furnace (1); three fixed guide plates (73) are respectively set between the prepared three support rods (72) and the three support legs (68) of the circular heating wire furnace (1), and the three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (72) of the lower cylinder (67) of the heating device are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); 2) After being positioned and lowered by three fixed guide plates (73), two handles (69) are provided at the opening end of the lower cylindrical barrel (67) of the heating device, and two handles (66) are provided at the opening end of the upper stainless steel cylindrical barrel (64); high-strength refractory material is selected to make the refractory furnace plate (8) of the circular heating wire furnace (1), and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1).

9. A method for indoor heating according to claim 2, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove black crystal panel (12), an upper stainless steel cylinder (5), a lower stainless steel cylinder (13) having a truncated conical shape at the lower end, and water, wherein the water added to the lower stainless steel cylinder (13) is heated to boiling to generate steam for indoor heating, characterized in that... The bottom of the lower stainless steel cylinder (13) with a truncated conical shape at the bottom is replaced with a bottom (80) made of copper or aluminum, becoming the lower cylinder (77) of the heating device with a copper or aluminum bottom (80) and a truncated conical shape. The bottom (80) of the copper or aluminum is firmly connected to the bottom side of the lower stainless steel cylinder (13) with a truncated conical shape at the bottom by means of folded edge interlocking, welding, or high-temperature adhesive bonding. The maximum volume of the lower cylinder part with a truncated conical shape at the bottom of the lower cylinder (77) of the heating device can meet the requirements of the lower cylinder of the heating device. The volume occupied by the upper limit of the water required to heat the cylinder (77) is one of the necessary conditions for achieving the ideal effect of low-power, low-cost heating, which limits the weight of water added to the lower cylinder (77) of the heating device. When the height of water added to the lower cylinder (77) of the heating device is 3 to 11 cm, the ideal effect of low-power, low-cost heating can be achieved. Select a circular electric ceramic stove black crystal panel (12) or a circular electric ceramic stove microcrystalline panel (3) of the same size to cover the top of the refractory electric furnace plate (8) of the circular heating wire electric furnace (1). Replace the lower stainless steel cylinder (13) with the lower cylinder (77) of the heating device with the lower cylinder (77) which has a flat truncated conical shape at the bottom. The copper or The outer diameter of the aluminum-made bottom (80) is the same as the outer diameter of the circular ceramic furnace black crystal panel (12) or circular ceramic furnace microcrystalline panel (3) covering the top of the refractory furnace plate (8) of the circular heating element furnace (1); the inner side of the opening end of the lower cylindrical barrel (77) of the heating device and the outer side of the opening end of the upper stainless steel cylindrical barrel (74) without an outward protrusion are connected by the same slope; the length of the overlapping part of the two opening ends of the upper stainless steel cylindrical barrel (74) and the lower cylindrical barrel (77) of the heating device can ensure that the connection is stable; a reinforcing rib (75) is provided on the inner side of the opening end of the upper stainless steel cylindrical barrel (74), and the outer side of the opening end of the lower cylindrical barrel (77) of the heating device is connected by the same slope. The side is provided with reinforcing ribs (78) to improve the deformation resistance of the upper stainless steel cylinder (74) and the lower cylinder (77) of the heating device. Under the condition of meeting the depth requirements of the heating wire (9) of the circular heating wire furnace (1), the depth of the groove for the heating wire (9) of the refractory furnace plate (8) of the circular heating wire furnace (1) is reduced, and the bottom of the lower cylinder (77) of the heating device is in direct contact with the circular ceramic furnace black crystal panel (12) or the circular ceramic furnace microcrystalline panel (3) covering the circular heating wire furnace (1). Shortening the distance between the bottom of the lower cylinder (77) of the heating device and the top of the heating wire (9) of the circular heating wire furnace (1) can further improve its heating effect.Three fixing nuts (81) with downward-facing through holes are welded at equal intervals at the outer diameter of the lower part of the straight barrel section of the lower cylindrical barrel (77) of the heating device. The upper external threads of the three prepared support rods (82) are connected to the internal threads of the three fixing nuts (81) with downward-facing through holes. The lower bottom of the three support rods (82) connected to the internal threads of the three fixing nuts (81) with downward-facing through holes is in contact with the floor. Rotating and adjusting the three support rods (82) can stabilize the lower cylindrical barrel (77) of the heating device and reduce the pressure on the circular heating wire furnace (1). Three fixing nuts are respectively set between the three prepared support rods (82) and the three support legs (68) of the circular heating wire furnace (1). Guide plates (73), three fixed guide plates (73) are fixedly connected to the three support legs (68) of the circular heating wire furnace (1); the three support rods (82) of the lower cylindrical barrel (77) of the heating device are positioned and lowered through the three fixed guide plates (73); two handles (79) are provided at the open end of the lower cylindrical barrel (77) of the heating device, and two handles (76) are provided at the open end of the upper stainless steel cylindrical barrel (74); the refractory furnace plate (8) of the circular heating wire furnace (1) is made of high-strength refractory material, and the thickness of the refractory furnace plate (8) of the circular heating wire furnace (1) is increased to improve the overall strength of the refractory furnace plate (8) of the circular heating wire furnace (1).

10. A method for indoor heating according to claim 1, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), an upper stainless steel cylinder (5), a lower stainless steel cylinder (4), and water used in combination, wherein the water added to the lower stainless steel cylinder (4) is heated to boiling to generate steam for indoor heating, characterized in that... Replace the lower ordinary stainless steel cylinder (4) with the lower ordinary stainless steel cylinder (86). The lower ordinary stainless steel cylinder (86) has two handles (87) at its open end. A reinforcing rib (88) is provided on the upper outer side of the open end of the lower ordinary stainless steel cylinder (86). Replace the upper ordinary stainless steel cylinder (5) with the upper ordinary stainless steel cylinder (92). The upper ordinary stainless steel cylinder (92) has two handles (91) at its open end. A reinforcing rib (93) is provided on the outer side of the open end of the upper ordinary stainless steel cylinder (92). Between the lower ordinary stainless steel cylinder (86) and the upper ordinary stainless steel cylinder (92) A stainless steel intermediate connecting sleeve (84) is added. Two handles (85) are provided on the outside of the stainless steel intermediate connecting sleeve (84). A reinforcing rib (99) is provided on the upper inside of the stainless steel intermediate connecting sleeve (84). A reinforcing rib (100) is provided on the lower inside of the stainless steel intermediate connecting sleeve (84). The slope of the connection between the upper outside of the stainless steel intermediate connecting sleeve (84) and the inner side of the upper ordinary stainless steel cylinder (92) is the same. The slope of the connection between the lower outside of the stainless steel intermediate connecting sleeve (84) and the inner side of the lower ordinary stainless steel cylinder (86) is the same. The upper and lower ends of the stainless steel intermediate connecting sleeve (84) are... The upper and lower ends are respectively covered with silicone sleeves (90) and silicone sleeves (89), which can enhance the sealing and fitting effect between the stainless steel intermediate connecting sleeve (84) and the upper and lower ordinary stainless steel cylinders (92) and (86). A through hole is opened at the top of the upper ordinary stainless steel cylinder (92) and a pressure reducing valve (94) is provided to adjust the internal pressure of the sealed heating device when heating. A detachable and movable circular stainless steel metal ring (95) is added to the lower end of the outer side of the lower ordinary stainless steel cylinder (86). A through hole is opened on the outer side of the circular stainless steel metal ring (95) and a nut (96) is welded on it for the circular non-circular stainless steel metal ring (95) to be installed. The bolts (97) that fasten the stainless steel metal ring (95) to the lower end of the ordinary stainless steel barrel (86) are fixed by rotating the internal thread of the nut (96) to fix the circular stainless steel metal ring (95). Three nuts (98) are evenly distributed and welded on the outside of the circular stainless steel metal ring (95). The upper threads of the three prepared support rods (7) are rotated to connect with the internal threads of the three nuts (98). The three support rods (7) are adjusted to make stable contact with the ground. The three support rods (7) that are connected to the three nuts (98) of the circular stainless steel metal ring (95) are positioned and lowered by three fixed guide plates (73).In the heating element with the above-mentioned combined structure, both the lower ordinary stainless steel cylinder (86) and the upper ordinary stainless steel cylinder (92) are existing common parts. A specially made stainless steel intermediate connecting sleeve (84) firmly connects the lower ordinary stainless steel cylinder (86) and the upper ordinary stainless steel cylinder (92) together. The stainless steel intermediate connecting sleeve (84) with matching diameter and height is selected and manufactured according to the structural size requirements of different indoor heating elements to complete the assembly of the heating element.

11. A method for indoor heating according to claim 1, 2, 3, 4, 5, 6, 7, 8, or 9, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove microcrystalline panel (3) or a circular ceramic stove black crystal panel (12), an upper stainless steel cylinder or an upper cylinder made of copper or aluminum, a lower stainless steel cylinder or a lower stainless steel cylinder with a truncated conical shape at the lower end or a lower cylinder made of copper or aluminum, a lower cylinder made of copper or aluminum with a truncated conical shape or a lower cylinder made of stainless steel, and water, wherein the water added to the lower heating element of the above-mentioned indoor heating device is heated to boiling and steam is generated to heat the room, characterized in that... Silicone sleeves are added to the joints of the various components of the heating element in the above-mentioned indoor heating devices to improve the sealing and fitting effect of the various components of the heating element; a through hole is opened at the top of the upper heating barrel of the heating element in the above-mentioned technical solutions and a pressure reducing valve is installed to adjust the internal pressure of the sealed heating device when heating.

12. A method for indoor heating according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic stove microcrystalline panel (3) or a circular ceramic stove black crystal panel (12), an upper stainless steel cylinder or an upper cylinder made of copper or aluminum, a lower stainless steel cylinder or a lower stainless steel cylinder with a truncated conical shape at the lower end or a lower cylinder made of copper or aluminum, a lower cylinder made of copper or aluminum with a truncated conical shape or a lower cylinder made of stainless steel, and water, wherein the water added to the lower heating element of the above-mentioned indoor heating device is heated to boiling and generates steam for indoor heating, characterized by the use of... The circular ceramic cooktop replaces the heating device consisting of a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic cooktop microcrystalline panel (3) or a circular ceramic cooktop black crystal panel (12), and uses the above-mentioned devices as heating elements to transfer heat and realize various methods of indoor heating. The above-mentioned indoor heating methods include technical solutions that can steam or cook food while realizing indoor heating. The existing ceramic cooktop is suitable for use within 3 hours to realize indoor heating and steam or cook food while heating indoors, without considering noise. When using a round ceramic cooker as the heating device, shortening the distance between the top of the iron-chromium heating element and the bottom of the black crystal panel of the round ceramic cooker can improve the heating effect. The components of the electronic control system and temperature control system of the round ceramic cooker, as well as the cooling exhaust fan, are eliminated. Only the heating plate composed of the iron-chromium heating element and the heat-resistant plate and the stepless temperature and voltage regulator are retained to adjust the power. This allows the improved round ceramic cooker to work continuously at low power and eliminates the noise generated during operation. The improved round ceramic cooker improves the heating effect. Using the improved round ceramic cooker to boil water or heat food can eliminate the radiation effect of the induction cooker and also eliminate the exhaust gas pollution generated by the gas stove.

13. A method for indoor heating according to claim 10, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), and a lower ordinary stainless steel cylinder (86) and an upper ordinary stainless steel cylinder (92) firmly connected together by a specially made stainless steel intermediate connecting sleeve (84). The method involves selecting and manufacturing matching stainless steel intermediate connecting sleeves (84) with appropriate diameters and heights according to the structural dimensions of different indoor heating elements to complete the assembly of the heating elements. The method utilizes water added to the lower stainless steel cylinder (4) to heat and boil, generating steam for indoor heating. Its characteristic is that... The method involves connecting a lower ordinary stainless steel cylinder (103) to a stainless steel pipe (104), inserting a stainless steel basin (101) into the upper end of the stainless steel pipe as a combined heating element, and using water added to the lower ordinary stainless steel cylinder (103) to heat and boil, generating steam for heat transfer to achieve indoor heating. The slope at the connection point where the inner side of the upper end of the lower ordinary stainless steel cylinder (103) matches the outer side of the lower end of the inserted stainless steel pipe (104) is the same. The upper end of the stainless steel pipe (104) has the same slope. The slope of the connection between the side and the outer side of the inserted stainless steel basin (101) is the same. The lower ordinary stainless steel cylinder (103) has two handles (105) at the open end. A reinforcing rib (106) is provided on the upper outer side of the open end of the lower ordinary stainless steel cylinder (103). The lower ordinary stainless steel cylinder (103), stainless steel tube (104) and stainless steel basin (101) in the heating element with the above-mentioned combined structure are all existing common parts. The stainless steel tube (104) is selected as a stainless steel flue.

14. A method for indoor heating according to claim 10, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), and a lower ordinary stainless steel cylinder (86) and an upper ordinary stainless steel cylinder (92) firmly connected together by a specially made stainless steel intermediate connecting sleeve (84). The method involves selecting and manufacturing matching stainless steel intermediate connecting sleeves (84) with appropriate diameters and heights according to the structural dimensions of different indoor heating elements to complete the assembly of the heating elements. The method utilizes water added to the lower stainless steel cylinder (4) to heat and boil, generating steam for indoor heating. Its characteristic is that... The method involves connecting a lower ordinary stainless steel cylinder (103) to a stainless steel cylinder (104), inserting a stainless steel top cover (102) into the upper end of the stainless steel cylinder, and using water added to the lower ordinary stainless steel cylinder (103) to heat and boil, generating steam for heat transfer and achieving indoor heating. The slope of the connection point between the inner side of the upper end of the lower ordinary stainless steel cylinder (103) and the outer side of the lower end of the stainless steel cylinder (104) is the same, and the upper end of the stainless steel cylinder (104) and the inserted stainless steel top cover (102) are connected. The slopes of the outer joints are the same. The lower ordinary stainless steel cylinder (103) has two handles (105) at the open end. A reinforcing rib (106) is provided on the upper outer side of the open end of the lower ordinary stainless steel cylinder (103). A handle (109) of the stainless steel cover is provided on the top surface of the stainless steel cover (102). The lower ordinary stainless steel cylinder (103) and the stainless steel cylinder (104) connected to it in the heating element with the above-mentioned combined structure are all existing common parts. The stainless steel cylinder (104) is a stainless steel flue.

15. A method for indoor heating according to claim 13, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), and a combination heating element consisting of a lower ordinary stainless steel cylinder (103) connected to a stainless steel pipe (104), with a stainless steel basin (101) inserted into the upper end of the stainless steel pipe. The method utilizes water added to the lower ordinary stainless steel cylinder (103) to heat and boil, generating steam for heat transfer, thereby achieving indoor heating. The method is characterized by... A through hole is opened on the inner side of the bottom of the stainless steel basin (101) inserted at the upper end of the heating element, and a pressure reducing valve (107) is provided to adjust the internal pressure of the sealed heating device when it is heating.

16. A method for indoor heating according to claim 14, wherein the method comprises a circular heating element electric furnace (1) and a stepless temperature and voltage regulator (2), a circular ceramic furnace microcrystalline panel (3), and a combination heating element consisting of a lower ordinary stainless steel cylinder (103) connected to a stainless steel pipe (104), with a stainless steel top cover (102) inserted into the upper end of the stainless steel pipe. The method utilizes water added to the lower ordinary stainless steel cylinder (103) to heat and boil, generating steam for heat transfer, thereby achieving indoor heating. The method is characterized by... A through hole is opened on the outer side of the top horizontal plane of the stainless steel cover (102) inserted at the upper end of the combined heating element, and a pressure reducing valve (108) is provided to adjust the internal pressure of the sealed heating device when it is heating.

17. A method for indoor heating according to claim 10, claim 13, claim 14, claim 15 or claim 16, wherein the method utilizes water added to the lower stainless steel cylinder of the combined heating element to boil and generate steam for indoor heating, characterized in that... Select a stainless steel clamp that can be adjusted to replace the movable circular stainless steel metal ring (95). A through hole is opened on the outside of the circular stainless steel metal ring (95) and a nut (96) and a fastening bolt (97) are welded on it. Three nuts are evenly distributed and welded on the outside of the stainless steel clamp. The upper threads of the three prepared support rods are rotated and connected to the internal threads of the three nuts welded to the stainless steel clamp. The three support rods are adjusted to make stable contact with the ground. The three support rods connected to the three nuts welded to the stainless steel clamp are positioned and lowered through three fixed guide plates.

18. A method for indoor heating according to claim 10, claim 13, claim 14, claim 15 or claim 16, wherein the method utilizes water added to the lower stainless steel cylinder of the combined heating element to heat to boiling and generate steam for indoor heating, characterized in that... The heating device consisting of a circular heating wire furnace and a stepless temperature and voltage regulator is replaced by a square or circular heating wire furnace with adjustable heating power. A square or circular ceramic stove microcrystalline panel or a square or circular ceramic stove black crystal panel is installed on the top surface of the square or circular heating wire furnace with adjustable heating power. A combined heating element is installed on the top surface of the aforementioned ceramic stove microcrystalline panel or ceramic stove black crystal panel. The technology method utilizes water added to the combined heating element to heat and generate steam for heat transfer, thereby achieving indoor heating. The shape of the aforementioned combined heating element is a closed cube or closed cylinder with a square base.

Images