Efficient pulsating heat pipe air pre-heater gas stove

Abstract

The invention discloses an efficient pulsating heat pipe air pre-heater gas stove, and relates to the technical field of gas stoves. The air pre-heater comprises an air pre-heater body, a pulsating heat pipe and an air supply pipeline, the pulsating heat pipe is embedded in an inner cavity of the air pre-heater body, and the bottom of the air pre-heater body communicates with the top of the air supply pipeline; the air pre-heater body comprises a heat insulation radiation cavity and an air pre-heating cavity. The heat transfer efficiency of the pulsating heat pipe is far higher than that of traditional metal heat conduction, heat of high-temperature flue gas can be rapidly absorbed, waste heat loss is reduced, the heat efficiency is improved, secondary air is heated through the air preheater, the temperature of the secondary air is increased, the combustion temperature is increased, gas combustion is more sufficient, emission of carbon monoxide and nitric oxide is reduced, and the energy-saving and environment-friendly effects are achieved. The pulsating heat pipe has the unique advantages of being small and exquisite in structure, flexible in arrangement and efficient in heat transfer, and the heat efficiency of the gas stove is effectively improved through the L-shaped pulsating heat pipe heat insulation air pre-heater structure.

Description

Technical Field

[0001] The invention belongs to the technical field of gas stoves, and in particular relates to a high-efficiency pulsating heat pipe air preheater gas stove. Background Art

[0002] As a core appliance in the home kitchen, the thermal efficiency and environmental performance of gas stoves are directly linked to energy consumption and residents' quality of life. In recent years, with global energy shortages and the advancement of the "dual carbon" goals, gas stove research has focused on improving thermal efficiency, cleaner combustion, and innovative materials technology. Gas stove thermal efficiency refers to the proportion of heat generated by gas combustion that is actually absorbed by the cookware for heating, and is a key indicator of energy efficiency. According to the Chinese national standard "Energy Efficiency Limits and Energy Efficiency Grades for Household Gas Cookers" (GB30720-2014), the first-level energy efficiency threshold is set at a thermal efficiency of ≥63%. Currently, the thermal efficiency of mainstream gas stove brands generally ranges from 60% to 70%, while high-end products can reach over 75% through technological innovation. These improvements primarily utilize premixed combustion, porous media combustion, infrared combustion, and other methods to reduce incomplete combustion losses, achieve more uniform flame distribution, or convert thermal energy into infrared radiation to directly heat the pot bottom.

[0003] At present, the main methods for improving the thermal efficiency of gas stoves include improving the mixing efficiency of gas and air, uniform flame distribution and temperature control, and flue gas waste heat recovery. However, traditional gas stoves recover flue gas waste heat through energy-gathering rings or metal fins, but have the following defects: Low waste heat recovery efficiency: Existing technologies rely on metal thermal conductivity, have low heat transfer coefficients, and cannot achieve phase change heat transfer of the working fluid, resulting in serious heat loss from high-temperature flue gas and incomplete combustion: Insufficient secondary air preheating and uneven mixing of gas and air lead to high CO emissions and nitrogen oxides generation, and large heat dissipation losses: Traditional stoves have weak insulation structures, high heat radiation losses at ambient temperatures, and convective heat dissipation of high-temperature flue gas exacerbates energy waste.

[0004] To this end, we provide a high-efficiency pulsating heat pipe air preheater gas stove to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-efficiency pulsating heat pipe air preheater gas stove, which solves the problems of low waste heat recovery efficiency and insufficient secondary air preheating in gas stoves in the prior art through the cooperation of the air preheater body, the pulsating heat pipe and the air supply pipeline.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention is a high-efficiency pulsating heat pipe air preheater gas stove, comprising an air preheater body, a pulsating heat pipe and an air supply pipeline, wherein the pulsating heat pipe is embedded in the inner cavity of the air preheater body, and the bottom of the air preheater body is connected to the top of the air supply pipeline; the air preheater body comprises a heat-insulating radiation cavity and an air preheating cavity, and the heat-insulating radiation cavity comprises an inner partition, a middle partition and an outer partition; the pulsating heat pipe comprises a lower end pulsating pipeline and an upper end pulsating pipeline, and the top of the lower end pulsating pipeline is connected to the bottom of the upper end pulsating pipeline; the air supply pipeline comprises a hot air pipe and an air supply loop, and one end of the hot air pipe is connected to the surface of the air supply loop.

[0008] The present invention is further configured such that the inner partition, the middle partition and the outer partition are all made of metal materials, the inner partition and the middle partition form an inner air cavity, and the middle partition and the outer partition form an outer vacuum cavity.

[0009] The present invention is further configured such that the pulsating heat pipe is designed as a cavity structure and is filled with a heat pipe working medium. The side wall of the pulsating heat pipe is opened and connected to a liquid filling pipe port. The pulsating heat pipe is an L-shaped pipe, and the inner partition is a radiation plate, which is arranged around the stove. It absorbs the radiant heat of the stove flame toward the fire side, so that the temperature of the radiation plate is increased. Then, the radiation plate transfers the heat to the back-fire surface of the inner partition through heat conduction. The back-fire surface of the radiation plate radiates heat to the middle partition and the lower end pulsating pipe that is closely attached to it through the air cavity, thereby transferring the heat to the middle partition. The internal working fluid of the partition plate and the lower end pulsating pipeline absorbs heat, evaporates and vaporizes, expands in volume, and generates self-excited motion. The working fluid oscillates or circulates and pulsates in the tube to flow to the upper end pulsating pipeline. At the same time, heat is also transmitted to the upper end pulsating pipeline along with the flow of the working fluid. In this process, the radiant heat absorbed by the middle partition plate is also transferred to the working fluid in the lower end pulsating pipeline through heat conduction of the tube wall, thereby strengthening the transfer of radiant heat to the heat pipe. The vacuum cavity formed by the middle partition plate and the outer partition plate isolates the heat from being lost to the environment, thereby playing a role in heat insulation.

[0010] The present invention is further configured such that the upper end pulsating pipeline forms a certain angle with the lower end pulsating pipeline, and the angle is greater than ninety degrees; the upper end pulsating pipeline forms a certain angle with the horizontal plane, and the angle is between five degrees and ten degrees, and gravity is used to assist the backflow of the working medium to avoid blockage of the vapor-liquid plug flow.

[0011] The present invention is further configured such that the lower end pulsating pipeline is arranged between the inner partition and the middle partition, and is tightly fitted with the inner wall surface of the middle partition.

[0012] The present invention is further configured such that the upper end pulsating pipeline is arranged in the inner cavity of the air preheating chamber, the inner cavity of the air preheating chamber is provided with a heat insulation board, and the heat insulation board and the lower inner wall of the air preheating chamber form an insulating vacuum chamber.

[0013] The present invention is further configured such that an air inlet and an air outlet are respectively provided at the bottom of the heat insulation plate, an air flow baffle is fixedly connected between the heat insulation plate and the upper inner wall of the air preheating chamber, the air inlet and the air outlet are respectively located on both sides of the air flow baffle, a magnetic ring is fixedly connected to one side of the air flow baffle, the heat-insulating vacuum chamber isolates the heat of the air preheater from being lost to the environment, the air flow baffle plays a role in controlling the wind direction, the fan (external) sends secondary air into the air preheater from the air inlet of the air preheating chamber, the cold air flows along the air duct of the air cavity, and the upper end of the cold air absorbs heat from the pipe wall when pulsating through the pipe, the working medium in the pipe condenses and liquefies, releasing heat, and heating the cold air. In addition, the cold air absorbs the scouring heat from the flue gas on the upper surface of the air cavity through convection heat transfer with the upper surface of the air cavity, and the heated hot air flows out from the air preheater outlet, the entire air preheating chamber is arranged around the pot frame, the flue gas flows between the upper surface of the cavity and the bottom of the pot, and the flue gas has a certain degree of thermal scouring on the upper surface of the cavity.

[0014] The present invention is further configured such that one end of the hot air pipe is connected to the air outlet, an air eye is opened on the surface of the air supply loop, the air supply pipe is placed on the stove surface between the gas stove head (external) and the heat-insulating radiation cavity, the inlet of the hot air pipe is connected to the hot air outlet of the air preheater, the hot secondary air coming out of the air preheater enters the air supply loop through the hot air pipe, flows out from the air outlet eye on the upper surface of the air supply loop at a certain speed, and is mixed with the semi-premixed gas jet flowing out of the stove head, thereby enhancing the mixing and combustion of the jets. At the same time, the hot air increases the flame temperature, enhances the heat exchange between the high-temperature flame and the cookware, and improves the thermal efficiency.

[0015] The present invention is further configured such that a section of the upper end pulsating pipeline exposed to the outside is fixedly connected to a support plate, and the number of the support plates is four. A section of the upper end pulsating pipeline close to the elbow is directly exposed to the environment. Because this section is arranged under the pot rack, the high-temperature flue gas flowing out from the inner radiation plate and the enclosed stove chamber has a certain degree of heat radiation to it. The working fluid inside this section of the pipeline will still absorb the radiant heat of the flue gas, and the internal working fluid will continue to evaporate and vaporize, and its volume will expand, thereby enhancing its self-excited motion within the pipe.

[0016] The present invention is further configured such that a bracket is provided between the heat-insulating radiation cavity and the air preheating cavity.

[0017] The present invention has the following beneficial effects.

[0018] 1. The heat transfer efficiency of the pulsating heat pipe in the present invention far exceeds that of traditional metal heat conduction. It can quickly absorb the heat of high-temperature flue gas, reduce waste heat loss, and improve thermal efficiency. The secondary air is heated by the air preheater, which increases the secondary air temperature, increases the combustion temperature, and makes the gas burn more completely, reducing the emission of carbon monoxide and nitrogen oxides. The pulsating heat pipe has the unique advantages of compact structure, flexible layout, and efficient heat transfer. The L-shaped pulsating heat pipe insulated air preheater structure effectively improves the thermal efficiency of the gas stove.

[0019] 2. After the working fluid (such as a water-based mixed liquid) of the heat pipe of the present invention absorbs heat and vaporizes in the evaporation section, a pulsating flow is formed through the pressure difference within the pipe, avoiding the laminar flow obstruction problem of traditional single-phase flow in heat pipes and ensuring continuous and uniform heat transfer.

[0020] 3. The air flow baffle (with magnetic ring) in the air preheating chamber of the present invention guides the cold air into a spiral flow, prolonging the contact time with the condensing section of the pulsating heat pipe, improving the heat exchange efficiency, and reducing the pressure fluctuations caused by turbulent disturbances.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0023] Figure 1 This is a three-dimensional diagram of a high-efficiency pulsating heat pipe air preheater gas stove.

[0024] Figure 2 This is a bottom view of a high-efficiency pulsating heat pipe air preheater gas stove.

[0025] Figure 3 This is a cross-sectional view of the air preheating chamber in a high-efficiency pulsating heat pipe air preheater gas stove.

[0026] Figure 4 This is a cross-sectional view of the heat-insulating radiation cavity in a high-efficiency pulsating heat pipe air preheater gas stove.

[0027] Figure 5 This is a three-dimensional diagram of a pulsating heat pipe in a high-efficiency pulsating heat pipe air preheater gas stove.

[0028] Figure 6 This is a three-dimensional diagram of the air supply pipeline in a high-efficiency pulsating heat pipe air preheater gas stove.

[0029] Figure 7 The present invention is a three-dimensional diagram of the hollow preheater body of a high-efficiency pulsating heat pipe air preheater gas stove.

[0030] In the accompanying drawings: 1. Air preheater body; 101. Heat insulation radiation cavity; 1011. Inner partition; 1012. Middle partition; 1013. Outer partition; 102. Air preheating cavity; 2. Pulsating heat pipe; 201. Lower end pulsating pipeline; 202. Upper end pulsating pipeline; 3. Air supply pipeline; 301. Hot air pipe; 302. Air supply loop; 4. Liquid filling pipe mouth; 5. Heat insulation board; 6. Air inlet; 7. Air outlet; 8. Air flow baffle; 9. Magnetic ring; 10. Air eye; 11. Support plate; 12. Bracket. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0032] See also Figure 1-Figure 7 The present invention is a high-efficiency pulsating heat pipe air preheater gas stove, comprising an air preheater body 1, a pulsating heat pipe 2 and an air supply pipe 3. The pulsating heat pipe 2 is embedded in the inner cavity of the air preheater body 1, and the bottom of the air preheater body 1 is connected to the top of the air supply pipe 3; the air preheater body 1 comprises a heat-insulating radiation cavity 101 and an air preheating cavity 102, and the heat-insulating radiation cavity 101 comprises an inner partition 1011, a middle partition 1012 and an outer partition 1013, and the inner partition 1011, the middle partition 1012 and the outer partition 1013 are all made of metal materials, and the inner partition 1011 and the middle partition 101 are connected. 2 constitutes an inner air cavity, the middle partition 1012 and the outer partition 1013 constitute an outer vacuum cavity, the upper end pulsation pipeline 202 is arranged in the inner cavity of the air preheating cavity 102, the inner cavity of the air preheating cavity 102 is provided with a heat insulation board 5, the heat insulation board 5 and the lower inner wall of the air preheating cavity 102 constitute an insulating vacuum cavity, the bottom of the heat insulation board 5 is respectively provided with an air inlet 6 and an air outlet 7, an air flow baffle 8 is fixedly connected between the heat insulation board 5 and the upper inner wall of the air preheating cavity 102, the air inlet 6 and the air outlet 7 are respectively located on both sides of the air flow baffle 8, and a magnetic ring 9 is fixedly connected to one side of the air flow baffle 8.

[0033] Further configuration: the inner partition 1011 is a radiation plate, which is arranged around the stove head. It absorbs the radiation heat of the stove head flame on the fire side, so that the temperature of the radiation plate is increased. Then, the radiation plate transfers the heat to the back-fire surface of the inner partition 1011 through heat conduction. The back-fire surface of the radiation plate radiates heat to the middle partition 1012 and the lower end pulsation pipeline 201 tightly fitted therewith through the air cavity, and transfers the heat to the internal working medium of the middle partition 1012 and the lower end pulsation pipeline 201. After absorbing the heat, the internal working medium evaporates and vaporizes, expands in volume, and generates self-excited motion. The working medium oscillates or circulates and pulsates in the pipe to flow to the upper end pulsation pipeline 202. At the same time, heat is also transferred to the upper end pulsation pipeline 202 along with the flow of the working medium. In this process, the radiation heat absorbed by the middle partition 1012 is also transferred to the working medium in the lower end pulsation pipeline 201 through heat conduction of the pipe wall, thereby enhancing the transfer of radiation heat to the heat pipe. The vacuum chamber formed by the middle partition 1012 and the outer partition 1013 isolates the heat from being lost to the environment and plays a role in heat insulation. The insulated vacuum chamber isolates the heat from being lost to the environment in the air preheater body 1. The air flow baffle 8 controls the wind direction. The fan (external) sends secondary air into the air preheater from the air inlet of the air preheating chamber 102. The cold air flows along the air duct of the air cavity. When the upper end of the cold air pulsates through the pipeline 202, it absorbs heat from the pipe wall. The working fluid in the pipe condenses and liquefies, releasing heat and heating the cold air. In addition, the cold air absorbs the scouring heat from the flue gas on the upper surface of the air preheating chamber 102 through convection heat transfer with the upper surface of the air preheating chamber 102. The heated hot air flows out from the air outlet of the air preheater body 1. The entire air preheating chamber 102 is arranged around the pot rack. The flue gas flows between the upper surface of the cavity and the bottom of the pot, and the flue gas has a certain amount of thermal scouring on the upper surface of the cavity. Example 2

[0034] See also Figure 1-Figure 7 Based on Example 1, the pulsating heat pipe 2 includes a lower pulsating pipe 201 and an upper pulsating pipe 202. The top of the lower pulsating pipe 201 is connected to the bottom of the upper pulsating pipe 202. The pulsating heat pipe 2 is designed as a cavity structure and is filled with a heat pipe working medium. The side wall of the pulsating heat pipe 2 is open and connected to a liquid filling nozzle 4. The pulsating heat pipe 2 is an L-shaped pipe. The upper pulsating pipe 202 forms a certain angle with the lower pulsating pipe 201, and the angle is greater than 90 degrees. The upper pulsating pipe 202 forms a certain angle with the horizontal plane, and the angle is between 5 degrees and 10 degrees. The lower pulsating pipe 201 is arranged between the inner partition 1011 and the middle partition 1012, and is tightly fitted with the inner wall surface of the middle partition 1012.

[0035] Further configuration: the entire pipeline of the pulsating heat pipe 2 is a loop structure, the interior of the pipeline is a cavity, the cross-section of the pulsating heat pipe 2 can be circular, square or rectangular, the equivalent diameter of the pipeline is between one and five millimeters, the pipe wall is made of metal material, and can be made of copper, aluminum alloy and stainless steel pipes. The interior of the pulsating heat pipe 2 is evacuated and filled with a heat pipe working fluid equivalent to 30% to 70% of the internal volume of the pipe. According to the temperature range of the pipe wall, room temperature heat pipe working fluid, such as water, ethanol water, graphene dispersion, etc., or medium temperature heat pipe working fluid, such as thermal conductive working fluid, etc., or high temperature heat pipe working fluid can be selected. For warm heat pipe working fluid, such as sodium working fluid, the filling nozzle 4 is a short pipe with a diameter smaller than that of the pulsating heat pipe 2. One end is connected to the pipeline of the pulsating heat pipe 2, and the other end is open before filling. After filling, the nozzle is flattened and sealed by welding. The section of the upper end of the pulsating pipe 202 near the elbow is directly exposed to the environment. Because this section is arranged under the pot rack, the high-temperature flue gas flowing out from the inner layer of radiation plate and the surrounding stove chamber will have a certain amount of heat radiation to it. The working fluid inside this section of the pipe will still absorb the radiant heat of the flue gas, and the internal working fluid will continue to evaporate and vaporize, and its volume will expand, thereby strengthening its self-excited motion within the pipe. Example 3

[0036] See also Figure 1-Figure 7 On the basis of Example 1 and Example 2, the air supply pipe 3 includes a hot air pipe 301 and an air supply loop 302, one end of the hot air pipe 301 is connected to the surface of the air supply loop 302, and one end of the hot air pipe 301 is connected to the air outlet 7, and an air eye 10 is opened on the surface of the air supply loop 302. The upper end of the pulsating pipe 202 is exposed to the outside and is fixedly connected to a support plate 11. There are four support plates 11. A bracket (12) is provided between the heat insulation radiation cavity and the air preheating cavity.

[0037] Further arrangement: the air supply duct 3 is placed on the stove top between the gas stove head (external) and the heat-insulating radiation cavity 101, the inlet of the hot air duct 301 is connected to the hot air outlet of the air preheater, and the hot secondary air coming out of the air preheater passes through the hot air duct 301 into the air supply loop 302, and flows out from the air outlet 10 on the upper surface of the air supply loop 302 at a certain speed, and mixes with the semi-premixed gas jet flowing out of the stove head, thereby enhancing the mixing and combustion of the jet. At the same time, the hot air increases the flame temperature, enhances the heat exchange between the high-temperature flame and the cookware, and improves the thermal efficiency.

[0038] The working principle of the present invention is as follows: a semi-enclosed gas stove chamber structure is formed by the pulsating heat pipe 2 placed around the stove head (not described as the main technical feature in the prior art), the air preheating chamber 102 arranged outside the pot support 12, and the L-shaped loop pulsating heat pipe 2 connected in series between the two cavities. The insulated radiation chamber 101 absorbs the radiant heat of the high-temperature flue gas, and the exposed pipe in the middle of the pulsating heat pipe 2 absorbs the radiant convection heat of the flue gas, thereby heating the working medium in the evaporation section of the pulsating heat pipe 2, causing it to evaporate, vaporize, and self-excite.

[0039] When the working medium in the tube flows to the condensing section of the pulsating heat pipe 2, it exchanges heat with the cold air in the air preheater, condenses and releases heat, and forms a vapor-liquid plug flow in the tube. Under the action of the pressure difference at both ends of the pulsating heat pipe 2 and gravity, it flows back to the evaporation section, completing a cycle and heat transfer in the tube.

[0040] At the same time, because the pulsating heat pipe 2 recovers the radiant heat of the high-temperature flame to the environment and isolates the heat dissipation, the heat dissipation loss of the gas stove is reduced. The heat recovered by the pulsating heat pipe 2 increases the secondary air temperature and the flame temperature, and strengthens the heat exchange between the flue gas and the cookware. Secondary air supply is carried out through the air supply pipe 3, making the gas combustion more complete. The multiple effects effectively improve the thermal efficiency of the gas stove.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A high-efficiency pulsating heat pipe air preheater gas stove, comprising an air preheater body (1), a pulsating heat pipe (2) and an air supply pipeline (3), characterized in that: The pulsating heat pipe (2) is embedded in the inner cavity of the air preheater body (1), and the bottom of the air preheater body (1) is connected to the top of the air supply pipeline (3); The air preheater body (1) comprises a heat-insulating radiation cavity (101) and an air preheating cavity (102); the heat-insulating radiation cavity (101) comprises an inner baffle (1011), a middle baffle (1012) and an outer baffle (1013); The pulsating heat pipe (2) comprises a lower end pulsating pipeline (201) and an upper end pulsating pipeline (202), wherein the top of the lower end pulsating pipeline (201) is connected to the bottom of the upper end pulsating pipeline (202); The air supply pipeline (3) comprises a hot air pipe (301) and an air supply loop (302), and one end of the hot air pipe (301) is connected to the surface of the air supply loop (302).

2. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: The inner partition (1011), the middle partition (1012) and the outer partition (1013) are all made of metal materials; the inner partition (1011) and the middle partition (1012) form an inner air cavity, and the middle partition (1012) and the outer partition (1013) form an outer vacuum cavity.

3. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: The pulsating heat pipe (2) is designed as a cavity structure, and is filled with heat pipe working fluid. The side wall of the pulsating heat pipe (2) is open and connected to a liquid filling pipe port (4). The pulsating heat pipe (2) is an L-shaped pipe.

4. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: The upper end pulsating pipeline (202) and the lower end pulsating pipeline (201) form a certain angle, and the angle is greater than ninety degrees. The upper end pulsating pipeline (202) and the horizontal plane form a certain angle, and the angle is between five degrees and ten degrees.

5. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: The lower end pulsating pipeline (201) is arranged between the inner partition (1011) and the middle partition (1012), and is tightly fitted to the inner wall surface of the middle partition (1012).

6. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: The upper end pulsating pipeline (202) is arranged in the inner cavity of the air preheating chamber (102), and the inner cavity of the air preheating chamber (102) is provided with a heat insulation board (5), and the heat insulation board (5) and the lower inner wall of the air preheating chamber (102) form a heat insulation vacuum chamber.

7. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 6, characterized in that: An air inlet (6) and an air outlet (7) are respectively provided at the bottom of the heat insulation plate (5); an air flow baffle (8) is fixedly connected between the heat insulation plate (5) and the upper inner wall of the air preheating chamber (102); the air inlet (6) and the air outlet (7) are respectively located on both sides of the air flow baffle (8); and a magnetic ring (9) is fixedly connected to one side of the air flow baffle (8).

8. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 7, characterized in that: One end of the hot air pipe (301) is in communication with the air outlet (7), and an air eye (10) is provided on the surface of the air supply loop (302).

9. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: A portion of the surface of the upper end pulsating pipeline (202) exposed to the outside is fixedly connected to a supporting piece (11), and the number of the supporting pieces (11) is four.

10. The high-efficiency pulsating heat pipe air preheater gas stove according to claim 1, characterized in that: A bracket (12) is provided between the heat-insulating radiation cavity (101) and the air preheating cavity (102).

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