Pot support and hob

Abstract

This application provides a pot support and a cooktop. The pot support includes a pot frame body and a pulsating heat pipe. The pot frame body is annularly arranged and has an enclosing combustion chamber for housing a burner and allowing the burner's flame to pass through. The pot frame body has a preheating chamber and a secondary air flow channel connected within it. The secondary air flow channel transports secondary air flowing through the preheating chamber to the burner. The pulsating heat pipe is disposed within the pot frame body and has an evaporation end located near the combustion chamber and a condensation end located away from the combustion chamber. The condensation end is located within the preheating chamber, and the inside of the pulsating heat pipe is sealed and filled with a heat exchange medium. The heat released from the condensation end is used to heat the secondary air in the preheating chamber. At least a portion of the wall surface of the secondary air flow channel is formed by the top surface of the pot frame body. This technical solution enables waste heat recovery from the pot support and preheating of the combustion air, effectively improving the heat utilization efficiency of the cooktop.

Description

Technical Field

[0001] This application relates to the field of kitchenware technology, and in particular to a pot support and a stove. Background Technology

[0002] A stove is a common kitchen appliance in daily life, mainly used for heating and cooking food in pots and pans. Typically, a stove consists of two parts: a pot support and a burner. The pot support surrounds the burner and its main function is to support the pot and pan, allowing it to be placed stably above the burner.

[0003] During the use of stoves with relevant technologies, the flame generated by the burner heats the pot, and some of the heat is transferred to the pot support, causing the pot support temperature to rise. However, currently, most of the heat on the pot support is directly dissipated into the air outside, and this part of the heat is not effectively utilized and cannot participate in the heating process of the pot, thus resulting in heat waste. Summary of the Invention

[0004] This application provides a pot support and a stove, which aims to recover waste heat from the pot support in order to improve the heat utilization efficiency of the stove.

[0005] In a first aspect, embodiments of this application provide a pot support, comprising:

[0006] The pot frame body is annularly arranged and has an enclosed combustion chamber. The combustion chamber houses the burner and allows its flame to pass through. The pot frame body also contains a connected preheating chamber and a secondary air passage. The secondary air passage transports secondary air flowing through the preheating chamber to the burner. A pulsating heat pipe is installed inside the main body of the pot frame. The pulsating heat pipe has an evaporation end located near the combustion chamber and a condensation end located away from the combustion chamber. The condensation end is located inside the preheating chamber. The pulsating heat pipe is sealed and filled with a heat exchange medium. The heat released by the condensation end is used to heat the secondary air in the preheating chamber. At least a portion of the wall surface of the secondary airflow channel is formed by the top surface of the main body of the pot frame.

[0007] In some embodiments, the secondary airflow channel includes: An annular segment, surrounding the combustion chamber, is positioned above and communicates with the preheating chamber; and An air supply section, connected to the annular section, is used to deliver secondary air flowing through the annular section to the burner; At least a portion of the wall surface of the annular segment is formed by the top surface of the main body of the pot frame.

[0008] In some embodiments, the annular segment includes at least two sub-annular segments, which are sequentially nested along the radial direction of the pot frame body, and adjacent sub-annular segments are connected. The sub-annular segment near the combustion chamber is connected to the air supply section, while the sub-annular segment away from the combustion chamber is connected to the preheating chamber.

[0009] In some embodiments, the air inlet and air outlet of the sub-annular segment are located on opposite sides of the main body of the pot frame in the radial direction.

[0010] In some embodiments, the pot frame body includes: Lower cover; An upper cover is located above the lower cover. The upper cover is provided with the annular section, the air supply section, and the preheating cavity. At least a portion of the wall surface of the annular section is formed by the top surface of the upper cover. An inner connecting frame connects to the inner edges of the upper and lower covers, and encloses the combustion chamber; and An outer connecting frame is connected to the outer edges of the upper cover and the lower cover, and together with the upper cover, the lower cover and the inner connecting frame, defines a sealed heat-insulating cavity; The pulsating heat pipe passes through the upper cover, with the evaporation end located inside the insulation cavity and abutting against the inner connecting frame, and the condensation end located inside the preheating cavity.

[0011] In some embodiments, the upper cover includes: An annular cover body having the annular segment, at least a portion of the wall surface of the annular segment being formed by the top surface of the annular cover body; An annular preheating element having the preheating cavity, the annular preheating element being connected to the lower part of the annular cover body so that the preheating cavity communicates with the annular segment; and An air supply duct having the air supply section is connected to the annular cover body so that the air supply section communicates with the annular section, and the air supply duct extends at least partially along the height direction of the pot support.

[0012] In some embodiments, the air supply duct includes: The first tube is connected to the annular cover body and extends along the height direction of the pot support; A second tube section, communicating with the first tube section, extends radially along the pot support; and The third pipe section is connected to the second pipe section. The third pipe section is arranged around the combustion chamber and is used to deliver secondary air flowing through the air supply section to the burner.

[0013] In some embodiments, the pot frame body further includes: A support plate is connected to the inner connecting frame. The support plate is annular and surrounds the combustion chamber. The support plate extends upwardly from the inner side of the pot frame body near the combustion chamber to the outer side away from the combustion chamber, and passes through the annular preheating element. The pulsating heat pipe is located on the support plate.

[0014] In some embodiments, along the height direction of the pot support, the support plate divides the heat preservation cavity into a first chamber and a second chamber, the first chamber being located closer to the combustion chamber than the annular segment, and the evaporation end being located within the first chamber.

[0015] In some of these embodiments, the second chamber is filled with insulation material.

[0016] In some embodiments, there is one pulsating heat pipe that extends continuously around the combustion chamber in a closed loop. The pulsating heat pipe is bent and has multiple evaporation ends and condensation ends. Each evaporation end is located close to the combustion chamber, and each condensation end extends into the preheating chamber.

[0017] In some embodiments, there are multiple pulsating heat pipes, which are independently arranged and spaced apart along the circumference of the combustion chamber. The evaporation end of each pulsating heat pipe is located close to the combustion chamber, and the condensation end of each pulsating heat pipe extends into the preheating chamber.

[0018] In some embodiments, the height of the evaporation end is lower than the height of the condensation end.

[0019] In some embodiments, the pulsating heat pipe is inclined upwards from the evaporation end to the condensation end along the height direction.

[0020] In some embodiments, the pot frame body further includes: An air inlet pipe is provided, one end of which is connected to the main body of the pot frame and communicates with the preheating chamber; the other end of the air inlet pipe extends to the outside of the main body of the pot frame and is used to communicate with the blower to deliver air into the secondary air channel.

[0021] Secondly, embodiments of this application also provide a stove, including: The pot support as described above; and A burner is disposed in the combustion chamber, and the burner includes a gas distribution plate, which is connected to the secondary air flow channel.

[0022] Based on the above embodiments, this application constructs a combustion chamber through which the burner flame passes, enclosed by a ring-shaped pot frame body. A pulsating heat pipe is installed inside the pot frame body, along with a preheating chamber and a secondary air flow channel connected to the burner for supplying secondary air. The evaporation end of the pulsating heat pipe is positioned close to the combustion chamber, while the condensation end is located within the preheating chamber. With this configuration, the heat from the burner flame absorbed by the pot frame body is absorbed by the heat exchange medium sealed within the evaporation end of the pulsating heat pipe. The heat exchange medium vaporizes at the evaporation end and flows towards the condensation end, where it condenses and flows back towards the evaporation end. The heat released during condensation heats the secondary air flowing through the condensation end in the preheating chamber. This heated secondary air is then transported to the burner via the secondary air flow channel to participate in combustion. This achieves the recovery and effective utilization of the waste heat that would otherwise be lost from the pot frame to the outside air, reducing ineffective heat waste and thus improving the heat utilization efficiency of the stove.

[0023] Furthermore, this application also incorporates at least a portion of the wall surface of the secondary airflow channel, which is formed from the top surface of the pot holder body. This allows some of the heat absorbed by the pot holder body from the burner flame to be conducted into the secondary airflow channel. Thus, when the secondary air flows through the secondary airflow channel, it can be further heated to increase its temperature. This allows more heat lost from the pot holder to the outside air to be used to heat the secondary air, further improving the heat utilization efficiency of the stove. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the stove in one embodiment of this application; Figure 2 This is a cross-sectional schematic diagram of a stove according to one embodiment of this application; Figure 3 This is an exploded view of the pot support in one embodiment of this application; Figure 4 This is an exploded view of the upper cover in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of a pulsating heat pipe in one embodiment of this application; Figure 6 This is a schematic diagram of the structure of the support plate in one embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1000. Stove; 100. Pot support; 10. Pot support body; 10A. Combustion chamber; 10B. Preheating chamber; 10C. Secondary airflow channel; 10a. Annular section; 10a1. Sub-annular section; 10a11. First sub-annular section; 10a12. Second sub-annular section; 10b. Air supply section; 10D. Insulation chamber; 10D1. First chamber; 10D2. Second chamber; 11. Lower cover; 12. Upper cover; 121. Annular cover body; 122. Annular preheating component; 123. Air supply duct; 1231. First duct section; 123 2. Second pipe section; 1233. Third pipe section; 13. Inner connecting frame; 14. Outer connecting frame; 15. Support plate; 15a. Groove; 15b. Notch; 16. Inlet pipe; 20. Pulsating heat pipe; 21. Evaporator end; 22. Condenser end; 200. Burner; 30. Burner head body; 30a. Gas passage; 30b. Flame hole; 31. Inner ring flame cap; 31a. First gas passage; 31b. Inner ring flame hole; 32. Outer ring flame cap; 32a. Second gas passage; 32b. Outer ring flame hole; 40. Gas distribution plate; 40a. Premixing chamber. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] Please see Figure 1 and Figure 2 This application discloses a cooktop 1000, a common kitchen appliance in daily life, primarily used for heating and cooking food in a pot. The cooktop 1000 includes a pot support 100 and a burner 200. The pot support 100 is arranged around the outer periphery of the burner 200, meaning the burner 200 is located inside the pot support 100. The main function of the pot support 100 is to support the pot, allowing it to be stably placed above the burner 200. The burner 200 is responsible for burning natural gas or other fuels to form a flame and generate heat, thereby heating the pot.

[0029] The burner 200 includes a burner body 30, which has a gas passage 30a and flame holes 30b communicating with the gas passage 30a. The gas passage 30a of the burner body 30 is connected to an external gas supply device. The flame holes 30b are located on the top or side of the burner body 30 to ensure that the flame can completely cover the bottom of the cookware. Specifically, the combustible mixture of gas and primary air is ignited at the flame holes 30b and ejected from the flame holes 30b to form a stable combustion flame, which can be used to heat the cookware.

[0030] Please see Figure 1and Figure 2 In this embodiment, the burner body 30 includes an inner ring burner cap 31 and an outer ring burner cap 32. The inner ring burner cap 31 has a first gas passage 31a and an inner ring burner hole 31b communicating with the first gas passage 31a; the outer ring burner cap 32 is arranged at intervals around the outer periphery of the inner ring burner cap 31 and forms an airflow passage, and the outer ring burner cap 32 has a second gas passage 32a and an outer ring burner hole 32b communicating with the second gas passage 32a. The first gas passage 31a and the second gas passage 32a are respectively connected to an external gas supply device, so that a combustion flame is formed at both the inner ring burner hole 31b and the outer ring burner hole 32b, ensuring that the flame ejected from the burner hole 30b can be evenly and stably distributed in the top area of ​​the entire burner 200, thereby ensuring that the flame completely covers the bottom of the pot.

[0031] Furthermore, the burner 200 also includes a gas distribution plate 40, which is disposed in the airflow channel between the inner ring burner cap 31 and the outer ring burner cap 32. The gas distribution plate 40 has a premixing chamber 40a, which is connected to the first gas passage 31a and the second gas passage 32a respectively, so that the gas distribution plate 40 can evenly distribute the combustible mixture of gas and primary air flowing through the premixing chamber 40a into the first gas passage 31a and the second gas passage 32a to ensure the uniformity and stability of the combustion flame.

[0032] During the use of the stove 1000 with related technology, while the flame generated by the burner 200 heats the pot, some of the heat is transferred to the pot support 100, causing the temperature of the pot support 100 to rise. However, currently most of the heat on the pot support 100 is directly dissipated into the air outside it. This part of the heat is not effectively utilized and cannot participate in the heating process of the pot, thus resulting in heat waste.

[0033] To solve the above problems, refer to the following: Figure 2 and Figure 3 This application also proposes a pot support 100, which includes a pot support body 10 and a pulsating heat pipe 20.

[0034] The pot frame body 10 is arranged in a ring shape and encloses a combustion chamber 10A. The combustion chamber 10A is used to house the burner 200 and allow the flame of the burner 200 to pass through. That is, the burner 200 is at least partially located within the combustion chamber 10A. The pot frame body 10 can be integrally cast from high-temperature resistant, thermally conductive cast iron or austenitic stainless steel, possessing good structural strength and heat deformation resistance, and can withstand the high-temperature radiation of the flame and the load of the pot for a long time. The pot frame body 10 has a preheating chamber 10B and a secondary air flow channel 10C inside. The preheating chamber 10B and the secondary air flow channel 10C are connected. The secondary air flow channel 10C is used to transport the secondary air flowing through the preheating chamber 10B to the burner 200.

[0035] Specifically, the secondary air flow channel 10C is connected to the premixing chamber 40a of the gas distribution plate 40. In this way, the secondary air can be distributed to the first gas passage 31a and the second gas passage 32a through the premixing chamber 40a to supplement the air in the first gas passage 31a and the second gas passage 32a, thereby avoiding the problem of incomplete combustion caused by insufficient air, ensuring flame stability and improving combustion effect.

[0036] The pulsating heat pipe 20 is installed inside the main body 10 of the pot frame. The pulsating heat pipe 20 is sealed and filled with a heat exchange medium. It is a passive, high-efficiency heat transfer component that relies on the phase change of the heat exchange medium to achieve heat transfer. Its main body is a closed tube structure, allowing for rapid heat conduction without additional power. It can be installed to fit the annular structure of the main body 10 of the pot frame. The pulsating heat pipe 20 has an evaporation end 21 located near the combustion chamber 10A and a condensation end 22 located away from the combustion chamber 10A. The condensation end 22 is located inside the preheating chamber 10B, and the heat released from the condensation end 22 is used to heat the secondary air in the preheating chamber 10B.

[0037] The heat exchange medium can be a pure medium with a low boiling point and high latent heat of phase change, such as deionized water or anhydrous ethanol. Alternatively, a binary mixed medium suitable for the operating temperature range of the stove (1000°C) can be used. The amount of the medium is matched with the internal volume of the pulsating heat pipe 20, enabling stable phase change cycling under a small temperature difference. The heat exchange medium absorbs heat from the pot frame body 10 at the evaporation end 21 and flows to the condensation end 22 after vaporization. After condensation at the condensation end 22, it flows back to the evaporation end 21. The heat released at the condensation end 22 is used to heat the secondary air in the preheating chamber 10B.

[0038] At least a portion of the wall surface of the secondary airflow channel 10C is formed by the top surface of the pot frame body 10. For example, the top wall surface of the secondary airflow channel 10C is formed by the top surface of the pot frame body 10, i.e., the top surface of the pot frame body 10 forms the top wall surface of the secondary airflow channel 10C; similarly, the side wall surface of the secondary airflow channel 10C can also be formed by the top surface of the pot frame body 10; or, the bottom wall surface of the secondary airflow channel 10C can also be formed by the top surface of the pot frame body 10. Exemplarily, the top wall surface, side wall surface, and bottom wall surface of the secondary airflow channel 10C are all formed by the top surface of the pot frame body 10, and the top surface of the pot frame body 10 directly serves as the top wall surface of the secondary airflow channel 10C. This can be manufactured by die casting. With this configuration, after absorbing the heat transferred by the flame of the burner 200, the main body 10 of the pot rack can conduct some of the heat to the wall of the secondary air flow channel 10C through thermal radiation, thereby raising the temperature inside the secondary air flow channel 10C. When the secondary air flows through the secondary air flow channel 10C, it can be further heated to increase the temperature of the secondary air.

[0039] Based on the above structural configuration, in this embodiment of the application, the annularly arranged pot frame body 10 encloses a combustion chamber 10A through which the flame of the burner 200 can pass. A pulsating heat pipe 20 is provided inside the pot frame body 10, and a preheating chamber 10B and a secondary air flow channel 10C for supplying secondary air to the burner 200 and being connected are provided inside the pot frame body 10. The evaporation end 21 of the pulsating heat pipe 20 is arranged close to the combustion chamber 10A, while the condensation end 22 is located in the preheating chamber 10B. With this configuration, the heat transferred by the flame of the burner 200 to the main body 10 of the pot rack can be absorbed by the heat exchange medium sealed and filled in the evaporation end 21 of the pulsating heat pipe 20. After being heated and vaporized in the evaporation end 21, the heat exchange medium flows to the condensation end 22. After being cooled and condensed in the condensation end 22, it flows back to the evaporation end 21. The heat released by the heat exchange medium during the condensation process in the condensation end 22 can heat the secondary air flowing through the condensation end 22 in the preheating chamber 10B. The heated secondary air is then transported to the burner 200 through the secondary air flow channel 10C to participate in combustion. This realizes the recovery and effective utilization of the waste heat that the pot rack 100 originally lost to the outside air, reduces the ineffective waste of heat, and thus improves the heat utilization efficiency of the stove 1000.

[0040] Furthermore, in this embodiment, at least a portion of the wall surface of the secondary airflow channel 10C is formed from the top surface of the pot support body 10, allowing some of the heat absorbed by the pot support body 10 from the burner 200 flame to be conducted into the secondary airflow channel 10C. Thus, when secondary air flows through the secondary airflow channel 10C, it can be further heated to increase its temperature, enabling more heat lost from the pot support 100 to the outside air to be used to heat the secondary air, further improving the heat utilization efficiency of the stove 1000.

[0041] Please see Figure 2 In some embodiments, the secondary airflow channel 10C includes an annular section 10a and an air supply section 10b.

[0042] An annular segment 10a surrounds the combustion chamber 10A and is positioned above and communicates with the preheating chamber 10B, allowing secondary air within the preheating chamber 10B to flow smoothly into the annular segment 10a. At least a portion of the wall surface of the annular segment 10a is formed by the top surface of the pot frame body 10. For example, the top wall surface of the annular segment 10a is formed by the top surface of the pot frame body 10, meaning the top surface of the pot frame body 10 forms the top wall surface of the annular segment 10a; similarly, the side walls of the annular segment 10a can also be formed by the top surface of the pot frame body 10; or, the bottom wall surface of the annular segment 10a can also be formed by the top surface of the pot frame body 10. Exemplarily, the top, side, and bottom walls of the annular segment 10a are all formed by the top surface of the pot frame body 10, and the top surface of the pot frame body 10 directly serves as the top wall surface of the annular segment 10a. The air supply section 10b is connected to the annular section 10a and is used to deliver the secondary air flowing through the annular section 10a to the burner 200. Thus, the secondary air in the preheating chamber 10B first flows through the annular section 10a, then flows into the air supply section 10b, and finally is delivered to the air distribution plate 40 through the air supply section 10b.

[0043] It should be understood that the temperature within the annular section 10a is higher than the temperature within the preheating chamber 10B. Since the annular section 10a surrounds the combustion chamber 10A, and at least a portion of its wall is formed by the top surface of the boiler body 10, the annular section 10a is directly subjected to radiative heat conduction from the flame and the boiler body 10. In contrast, the heat in the preheating chamber 10B primarily originates from the heat released from the condenser end 22 of the pulsating heat pipe 20, and the pulsating heat pipe 20 also experiences some heat loss during heat transfer. Therefore, the temperature within the annular section 10a is higher than the temperature within the preheating chamber 10B. With this configuration, the secondary air is initially heated in the preheating chamber 10B using the heat released from the condenser end 22 of the pulsating heat pipe 20, and then enters the annular section 10a, where it is further heated by direct radiation and conduction from the boiler body 10. In this way, the secondary air can be heated step-by-step during its flow, resulting in a higher temperature before entering the burner 200, thus improving the heating effect on the secondary air.

[0044] In some embodiments, the annular segment 10a includes at least two sub-annular segments 10a1, which are sequentially nested along the radial direction of the pot support body 10. That is, the at least two sub-annular segments 10a1 are arranged in a sequentially surrounding manner along the radial direction of the pot support body 10, and adjacent sub-annular segments 10a1 are connected. This arrangement allows secondary air to flow sequentially between the multiple sub-annular segments 10a1, extending the flow time of the secondary air within the annular segment 10a and further improving the heating effect of the annular segment 10a on the secondary air. Furthermore, it allows more heat lost from the pot support 100 to the outside air to be used to heat the secondary air, further improving the heat utilization efficiency of the stove 1000. It should be noted that the embodiments of this application do not impose a specific limitation on the number of sub-annular segments 10a1; the number of sub-annular segments 10a1 can be 2, 3, 4, 5, or other numbers.

[0045] It is understandable that the temperature within the sub-annular segment 10a1 decreases sequentially from the inner side of the boiler body 10 near the combustion chamber 10A to the outer side away from the combustion chamber 10A in a radial direction. Since the burner 200 in the combustion chamber 10A is the main heat source, the sub-annular segment 10a1 closer to the combustion chamber 10A receives stronger heat radiation and heat conduction due to the influence of flame radiation, resulting in a higher temperature. Conversely, as the sub-annular segment 10a1 extends outward in the radial direction along the boiler body 10, the distance between it and the heat source gradually increases, and the heat radiation and heat conduction received by the sub-annular segment 10a1 gradually weaken. Therefore, the temperature within the sub-annular segment 10a1 further away from the combustion chamber 10A is lower.

[0046] Furthermore, the sub-annular segment 10a1 near the combustion chamber 10A is connected to the air supply section 10b, while the sub-annular segment 10a1 away from the combustion chamber 10A is connected to the preheating chamber 10B. Understandably, the temperature is highest in the sub-annular segment 10a1 near the combustion chamber 10A, and lowest in the sub-annular segment 10a1 away from the combustion chamber 10A. With this configuration, the secondary air in the preheating chamber 10B enters from the sub-annular segment 10a1 away from the combustion chamber 10A and flows radially inward through at least two sub-annular segments 10a1, finally flowing from the sub-annular segment 10a1 near the combustion chamber 10A into the air supply section 10b. This flow path design fully utilizes the gradually decreasing temperature distribution from the inside to the outside in the radial direction of the at least two sub-annular segments 10a1, causing the secondary air temperature to gradually increase during the flow process, thus improving the heating effect on the secondary air. Furthermore, this design allows more heat lost from the pot support 100 to the outside air to be used to heat secondary air, further improving the heat utilization efficiency of the stove 1000.

[0047] Please see Figure 2In an exemplary embodiment, there are two sub-annular segments 10a1, namely a first sub-annular segment 10a11 and a second sub-annular segment 10a12. The first sub-annular segment 10a11 surrounds the combustion chamber 10A, and the second sub-annular segment 10a12 is fitted around its outer periphery. The first sub-annular segment 10a11 and the second sub-annular segment 10a12 are in communication. The first sub-annular segment 10a11 is connected to the air supply pipe 123, and the second sub-annular segment 10a12 is connected to the preheating chamber 10B. Understandably, the temperature inside the first sub-annular segment 10a11 is higher than the temperature inside the second sub-annular segment 10a12. In this example, the secondary air is first preheated in the preheating chamber 10B by the heat released from the condenser end 22 of the pulsating heat pipe 20, and then flows sequentially through the second sub-annular section 10a12 and the first sub-annular section 10a11 and is heated step by step, so that the temperature of the secondary air gradually increases during the flow process, thereby improving the heating effect of the secondary air flow channel 10C on the secondary air.

[0048] In some embodiments, the air inlet and outlet of the sub-annular segment 10a1 are located on opposite sides of the boiler body 10 in the radial direction. Understandably, each sub-annular segment 10a1 has an air inlet and an air outlet. The air inlet receives secondary air from the preheating chamber 10B or an adjacent sub-annular segment 10a1 located on the outer side, while the air outlet transports the secondary air flowing through the sub-annular segment 10a1 to the next sub-annular segment 10a1 or the air supply section 10b. This opposing arrangement allows the secondary air to enter the sub-annular segment 10a1 from the air inlet on one side, flow along the annular path of the sub-annular segment 10a1 throughout the entire circumferential area of ​​the boiler body 10, and finally exit from the air outlet on the opposite side. This ensures that the secondary air entering the sub-annular segment 10a1 can fully contact and exchange heat with the flow channel wall, maximizing the extension of the secondary air's flow heat exchange path and stably guaranteeing the heating effect of the secondary air. Meanwhile, the opposing air inlets and outlets enable the airflow within the sub-annular section 10a1 to form a stable unidirectional flow, avoiding backflow and balancing the air pressure in all circumferential directions within the flow channel, preventing local eddies and stagnation, further improving the stability of air supply and heat exchange uniformity, and ensuring the continuous and stable heat recovery and secondary air heating effect of the boiler support 100.

[0049] For example, the first sub-annular segment 10a11 has a first air inlet and a first air outlet, and the second sub-annular segment 10a12 has a second air inlet and a second air outlet; wherein, the first air inlet is connected to the outlet of the preheating chamber 10B to allow secondary air in the preheating chamber 10B to flow smoothly into the first sub-annular segment 10a11; the first air outlet is connected to the second air inlet to allow secondary air in the first sub-reversing segment to flow smoothly into the second sub-annular segment 10a12; the second air outlet is connected to the inlet of the air supply section 10b to allow secondary air in the second sub-annular segment 10a12 to flow smoothly into the air supply section 10b; thus, a complete secondary air flow path is formed. Furthermore, the first air inlet and the first air outlet are located on opposite sides of the boiler body 10 in the radial direction, and the second air inlet and the second air outlet are also located on opposite sides of the boiler body 10 in the radial direction. This configuration ensures that when the secondary air flows within the first sub-annular section 10a11 and the second sub-annular section 10a12, it can flow completely along the annular path of the first sub-annular section 10a11 and the second sub-annular section 10a12 through the entire circumferential area of ​​the boiler body 10. This guarantees that the secondary air entering the first sub-annular section 10a11 and the second sub-annular section 10a12 can have sufficient contact and heat exchange with the flow channel wall, thus stably ensuring the heating effect of the secondary air.

[0050] Please see Figure 3 In some embodiments, the pot frame body 10 includes a lower cover 11, an upper cover 12, an inner connecting frame 13, and an outer connecting frame 14. The modular cover structure facilitates separate processing and subsequent assembly. The upper cover 12 is located above the lower cover 11. The lower cover 11 serves as the basic support frame for the pot frame body 10; the upper cover 12 is the load-bearing and heat-receiving component of the pot frame body 10. Its top surface stably supports the pot to be heated, and its inner wall is adjacent to the combustion chamber 10A, directly absorbing the radiant heat from the burner 200 flame and the residual heat returned from the pot, providing a stable heat source for the phase change cycle of the pulsating heat pipe 20. The upper cover 12 is provided with an annular section 10a, an air supply section 10b, and a preheating chamber 10B. At least a portion of the wall surface of the annular section 10a is formed by the top surface of the upper cover 12; for example, the top wall surface of the annular section 10a is formed by the top surface of the upper cover 12, that is, the top surface of the upper cover 12 forms the top wall surface of the annular section 10a; or, the side wall surface of the annular section 10a can also be formed by the top surface of the upper cover 12; or, the bottom wall surface of the annular section 10a can also be formed by the top surface of the upper cover 12. Exemplarily, the top wall surface, side wall surface, and bottom wall surface of the annular section 10a are all formed by the top surface of the upper cover 12, and the top surface of the upper cover 12 directly serves as the top wall surface of the annular section 10a. With this configuration, after absorbing the heat transferred by the flame of the burner 200, the upper cover 12 can conduct some of the heat to the wall surface of the annular section 10a through thermal radiation, shortening the heat conduction path and improving heat utilization efficiency.

[0051] The inner connecting frame 13 is connected to the inner edges of the upper cover 12 and the lower cover 11, and encloses a combustion chamber 10A; that is, the combustion chamber 10A is formed within the space enclosed by the inner connecting frame 13. The outer connecting frame 14 is connected to the outer edges of the upper cover 12 and the lower cover 11, and the outer connecting frame 14, the upper cover 12, the lower cover 11, and the inner connecting frame 13 together define a sealed heat-insulating cavity 10D; that is, the lower cover 11, the upper cover 12, the inner connecting frame 13, and the outer connecting frame 14 are correspondingly sealed and connected, and enclose a sealed heat-insulating cavity 10D. The heat-insulating cavity 10D can conduct heat through the static air retained inside, so that the heat accumulated in the upper cover 12 can be conducted through the heat-insulating cavity 10D to the pulsating heat pipe 20 inside the pot frame body 10, further providing heat support for the pulsating heat pipe 20.

[0052] This modular structure allows each component of the pot support body 10 to be made of suitable materials and processed according to its corresponding functional requirements. It eliminates the need for a complex internal flow channel and installation structure formed by a single casting, significantly reducing the processing difficulty of the pot support body 10 and facilitating mass production and assembly. At the same time, the layered structure can flexibly adapt to different numbers and arrangements of pulsed heat pipes 20, adjusting the overall heat exchange capacity without significantly altering the overall structure. This improves the versatility and adaptability of the pot support 100 structure, enabling stable and efficient recovery of waste heat from the pot support 100 and sufficient preheating of secondary air, continuously improving the overall thermal efficiency of the stove 1000.

[0053] Furthermore, the pulsating heat pipe 20 passes through the upper cover 12, and the evaporation end 21 is located inside the insulation cavity 10D and abuts against the inner connecting frame 13, reducing the contact thermal resistance of the heat transfer links and ensuring that the heat exchange medium inside the pulsating heat pipe 20 can be quickly heated to start the phase change cycle; while the condensation end 22 is directly set in the preheating cavity 10B, and can directly contact the secondary air flowing in the preheating cavity 10B for heat exchange, reducing intermediate heat transfer links, improving heat transfer efficiency, and maximizing the use of the waste heat recovered by the pot support 100 to complete the preheating of the secondary air. Understandably, the pulsating heat pipe 20 can achieve contact heat conduction through the abutment of the evaporation end 21 against the inner connecting frame 13. In addition, since the evaporation end 21 is arranged in the insulation cavity 10D, the pulsating heat pipe 20 can also achieve radiative heat conduction and convective heat conduction through the air in the insulation cavity 10D. This dual-heat conduction design can significantly improve the absorption efficiency of the excess heat of the pot support body 10 by the pulsating heat pipe 20, recover and utilize as much heat as possible that was originally lost to the outside air by the pot support 100, reduce the ineffective waste of heat, and maximize the heat utilization efficiency of the stove 1000.

[0054] Please see Figure 4In some embodiments, the upper cover 12 includes an annular cover body 121, an annular preheating element 122, and an air supply duct 123. The annular cover body 121 serves as the main structure of the upper cover 12 and has an annular segment 10a, at least a portion of the wall surface of the annular segment 10a being formed by the top surface of the annular cover body 121. For example, the top wall surface of the annular segment 10a is formed by the top surface of the annular cover body 121, i.e., the top surface of the annular cover body 121 forms the top wall surface of the annular segment 10a; similarly, the side wall surface of the annular segment 10a can also be formed by the top surface of the annular cover body 121; or, the bottom wall surface of the annular segment 10a can also be formed by the top surface of the annular cover body 121. Exemplarily, the top wall surface, side wall surface, and bottom wall surface of the annular segment 10a are all formed by the top surface of the annular cover body 121, and the top surface of the annular cover body 121 directly serves as the top wall surface of the annular segment 10a. With this configuration, after absorbing the heat transferred by the flame of the burner 200, the annular shroud body 121 can conduct some of the heat to the wall of the annular section 10a through thermal radiation, shortening the heat conduction path and improving heat utilization efficiency. The annular preheating element 122 has a preheating chamber 10B, which is connected to the lower part of the annular shroud body 121 so that the preheating chamber 10B is connected to the annular section 10a; the air supply pipe 123 has an air supply section 10b, which is connected to the annular shroud body 121 so that the air supply section 10b is connected to the annular section 10a, and the air supply pipe 123 extends at least partially along the height direction of the pot support 100. With this configuration, the preheating chamber 10B, the annular section 10a, and the air supply section 10b are each an independent flow channel structure, which completely separates the preheating chamber 10B, the annular section 10a, and the air supply section 10b from the insulation chamber 10D. This can prevent secondary air in the flow channel from leaking into the insulation chamber 10D, and ensure the stability and efficiency of the air supply.

[0055] Please see Figure 4In some embodiments, the air supply duct 123 includes a first duct section 1231, a second duct section 1232, and a third duct section 1233. The first duct section 1231 is connected to the annular cover body 121 and is connected to the annular segment 10a of the annular cover body 121, and extends along the height direction of the pot support 100. The second duct section 1232 is connected to the first duct section 1231 and extends along the radial direction of the pot support 100. The third duct section 1233 is annular and surrounds the combustion chamber 10A. The third duct section 1233 communicates with the second duct section 1232, so that the first duct section 1231, the second duct section 1232, and the third duct section 1233 form a complete air supply section 10b, and the third duct section 1233 communicates with the premixing chamber 40a of the air distribution plate 40 for delivering secondary air flowing through the air supply section 10b to the burner 200. Specifically, the upper surface of the third tube 1233 is provided with an outlet, and the outlet is connected to the premixing chamber 40a. This adapts to the structural layout of the combustion chamber 10A and the burner 200, ensuring that secondary air enters the premixing chamber 40a more stably.

[0056] This design allows the air supply pipe 123 to be adapted to the overall layout of the pot support 100 and the burner 200, avoiding interference between the air supply pipe 123 and components such as the burner body 30, resulting in a more compact and rational spatial layout within the pot support body 10. Furthermore, by connecting the annular third pipe section 1233 to the premixing chamber 40a of the gas distribution plate 40, issues such as uneven local air pressure and uneven secondary air distribution within the premixing chamber 40a can be avoided, allowing for a more uniform distribution of secondary air. This, in turn, improves the stability and completeness of the combustion process, reduces heat loss due to incomplete combustion, and further enhances the combustion efficiency of the stove 1000.

[0057] Optionally, the first pipe section 1231 and the second pipe section 1232 are formed by bending the same pipe structure. This not only facilitates the processing and manufacturing of the air supply pipe 123, but also simplifies installation, reduces installation steps, and improves production efficiency. Simultaneously, the integrally bent structure ensures the structural stability and sealing of the air supply pipe 123, preventing secondary air leakage from the connection between the first pipe section 1231 and the second pipe section 1232, thus improving the stability and efficiency of secondary air delivery. Alternatively, the first pipe section 1231 and the second pipe section 1232 can also adopt a separate structural layout, with the two connected in a sealed manner through insertion, welding, or bonding to reduce the possibility of secondary air leakage from the connection between them. Furthermore, the second pipe section 1232 and the third pipe section 1233 can also be connected in a sealed manner through insertion, welding, or bonding to reduce the possibility of secondary air leakage from the connection between them.

[0058] Please see Figure 6 In some embodiments, the pot frame body 10 further includes a support plate 15, which is connected to the inner connecting frame 13. The support plate 15 is annular and surrounds the combustion chamber 10A. The support plate 15 extends upwardly from the inner side of the pot frame body 10 near the combustion chamber 10A to the outer side away from the combustion chamber 10A, and passes through an annular preheating element 122. A pulsating heat pipe 20 is disposed on the support plate 15, which provides support for the pulsating heat pipe 20. The support plate 15 can be made of a material with high temperature resistance, good thermal conductivity, and high strength, such as stainless steel or aluminum alloy, so that the support plate 15 can maintain stable structural performance in high-temperature environments and has good thermal conductivity, which helps the pulsating heat pipe 20 to quickly absorb the heat transferred by the burner 200.

[0059] Understandably, the inclined extension of the support plate 15 causes the pulsating heat pipe 20 to also have an inclined structure corresponding to the support plate 15. That is, the height of the evaporation end 21 of the pulsating heat pipe 20 near the combustion chamber 10A is lower than the height of the condensation end 22 far from the combustion chamber 10A. This arrangement can utilize the gravity of the heat exchange medium itself to provide a stable reflux driving force for the condensed liquid working medium, allowing the liquid heat exchange medium that has completed exothermic condensation at the condensation end 22 to spontaneously flow from the higher condensation end 22 to the lower evaporation end 21. Without the need for additional auxiliary reflux structures, the heat exchange medium can complete a continuous and stable gas-liquid phase change cycle inside the pulsating heat pipe 20, effectively avoiding the problem of liquid working medium stagnation and accumulation at the condensation end 22 and insufficient working medium supply at the evaporation end 21, thus ensuring the continuity and stability of the heat transfer process of the pulsating heat pipe 20.

[0060] It should be noted that the specific position of the pulsating heat pipe 20 on the support plate 15 is not specifically limited in this embodiment. For example, a groove 15a matching the contour of the pulsating heat pipe 20 can be provided on the upper surface of the support plate 15, with a portion of the pulsating heat pipe 20 disposed within the groove 15a. This arrangement reduces the possibility of the pulsating heat pipe 20 shifting and ensures stable installation of the pulsating heat pipe 20 on the support plate 15. Alternatively, the pulsating heat pipe 20 can also be disposed on the lower surface of the support plate 15; or, the pulsating heat pipe 20 can be disposed within the support plate 15 by die casting or other methods.

[0061] In addition, such as Figure 6 As shown, the support plate 15 is provided with a notch 15b, which corresponds to the inlet of the preheating cavity 10B. This prevents the support plate 15 from blocking the inlet of the preheating cavity 10B and affecting the smooth entry of secondary air into the preheating cavity 10B. It ensures that the secondary air will not be blocked by the support plate 15 when entering the preheating cavity 10B, thus ensuring smooth flow of secondary air.

[0062] Furthermore, along the height direction of the pot support 100, the support plate 15 divides the heat preservation cavity 10D into a first chamber 10D1 and a second chamber 10D2. The first chamber 10D1 is located above the second chamber 10D2, and the evaporation end 21 is located within the first chamber 10D1. The first chamber 10D1 is positioned closer to the combustion chamber 10A than the annular section 10a. The first chamber 10D1 is formed by the annular cover body 121, the circumferential preheating element, the inner connecting frame 13, and the support plate 15. The second chamber 10D2 is formed by the support plate 15, the inner connecting frame 13, the outer connecting frame 14, and the lower cover 11. Understandably, the first chamber 10D1 is positioned closer to the upper cover 12 than the second chamber 10D2, therefore the temperature in the first chamber 10D1 is higher than the temperature in the second chamber 10D2, resulting in a more reasonable heat distribution within the heat preservation cavity 10D. The first chamber 10D1 can receive radiant heat from the combustion chamber 10A and conductive heat from the upper cover 12 more efficiently. The evaporation end 21 is located in the first chamber 10D1, which can provide stable heat support for the evaporation end 21 of the pulsating heat pipe 20.

[0063] In some embodiments, the second chamber 10D2 is filled with an insulation element. The insulation element forms a heat insulation barrier within the second chamber 10D2, effectively preventing heat transfer from the first chamber 10D1 to the stove area below the pot support 100, reducing ineffective downward heat loss, and improving the heat utilization efficiency of the stove 1000; it also prevents the stove panel from deforming, aging, and cracking due to prolonged exposure to high temperatures. The insulation element can be made of high-temperature resistant, low-thermal-conductivity materials, such as ceramic fiber or aluminum silicate, to ensure stable insulation performance under high-temperature conditions and reduce heat loss.

[0064] Optionally, the pulsating heat pipe 20 is arranged in a ring shape, allowing the heat exchange medium to circulate along the ring path during the gas-liquid phase change process. The ring pipe is a closed-loop continuous flow channel, allowing the gaseous and liquid working fluids to form a unidirectional circulation along the ring path. This avoids the obstruction caused by the opposing flow of the two phases within the same flow channel when the gaseous working fluid flows towards the condenser end 22 and the liquid working fluid flows back towards the evaporator end 21, as is common in open pipe systems. This ensures the smooth circulation of the heat exchange medium during phase change and allows for the rapid establishment of a stable heat transfer cycle even when the stove 1000's heat output fluctuates or the pot support 100's temperature fluctuates, ensuring stable operation of the waste heat recovery process. Furthermore, the closed-loop ring pipe structure reduces the number of sealing points in the pipeline, lowering the risk of heat exchange medium leakage during long-term alternating hot and cold operation of the stove 1000 and improving the overall operational reliability of the device.

[0065] Furthermore, the cross-sectional shape of the pulsating heat pipe 20 along its length can be circular, triangular, or rectangular. The cross-sectional shape of the pulsating heat pipe 20 can be flexibly selected according to the internal installation space of the pot support body 10 and the actual heat transfer requirements to adapt to the layout and processing requirements of pot supports 100 of different specifications. Among them, the circular cross-section pulsating heat pipe 20 has a mature processing technology, good pressure bearing performance, and uniform flow resistance of the heat exchange medium on the inner wall, which can ensure stable circulation of the medium in the pipe and is suitable for the mass standardized production of the stove 1000. The rectangular cross-section pulsating heat pipe 20 can adjust its length and width ratio according to the internal space of the pot support body 10, which can make fuller use of the limited internal space of the pot support body 10, increase the heat exchange contact area between the pipe and the pot support body 10 and the preheating cavity 10B, and improve the heat transfer effect per unit space. It is suitable for scenarios where the internal space of the pot support body 10 is flat and the layout is limited. The pulsating heat pipe 20 with a triangular cross-section has angular structures on its inner wall that generate capillary-assisted forces, accelerating the reflux of the condensed liquid working fluid to the evaporation end 21. Simultaneously, the larger contact area between the pipe body and the main body 10 of the boiler support and the preheating chamber 10B improves heat transfer efficiency, making it suitable for applications requiring higher working fluid reflux and heat exchange efficiency. The various cross-sectional shapes available do not require significant adjustments to the original structural design of the boiler support 100, allowing for flexible adaptation to different boiler support 100 specifications and performance requirements. This ensures the heat transfer effect of the pulsating heat pipe 20 while reducing manufacturing difficulty and improving the production feasibility and versatility of the boiler support 100.

[0066] Please see Figure 5In some embodiments, there is a single pulsating heat pipe 20. The pulsating heat pipe 20 extends continuously around the combustion chamber 10A in a closed loop, meaning it has a ring structure and is bent, with multiple evaporation ends 21 and condensation ends 22. Each evaporation end 21 is located close to the combustion chamber 10A, and each condensation end 22 extends into the preheating chamber 10B. The pulsating heat pipe 20 has a serpentine bend, with an evaporation end 21 formed at each bend near the combustion chamber 10A and a condensation end 22 formed at each bend away from the combustion chamber 10A. This design allows the pulsating heat pipe 20 to absorb heat more evenly from around the combustion chamber 10A. Multiple evaporation ends 21 simultaneously collect waste heat from all circumferences of the pot frame body 10, avoiding blind spots where heat cannot be recovered. The multiple evaporation ends 21 and condensation ends 22 further improve heat exchange efficiency, ensuring a more efficient and stable waste heat recovery process. Meanwhile, the multiple condensing ends 22 arranged circumferentially can form a multi-point heat exchange structure in the preheating chamber 10B, so that the secondary air flowing through the preheating chamber 10B can fully contact and exchange heat with the multiple sets of condensing ends 22, improving the preheating uniformity and preheating efficiency of the secondary air. After the preheated secondary air is delivered to the burner 200, it can improve the completeness of gas combustion, reduce the heat loss caused by incomplete gas combustion, and thus steadily improve the overall thermal efficiency of the stove 1000.

[0067] Furthermore, the closed-loop layout of the pulsating heat pipe 20 can be flexibly adjusted in size and shape according to actual needs to adapt to different specifications of the pot support 100 and burner 200 combination. For example, in a larger diameter pot support 100, the heat exchange area can be expanded by increasing the number of bends; while in a compact design, the bend angle can be optimized to save space. At the same time, this arrangement simplifies the installation process and facilitates the installation of the pulsating heat pipe 20.

[0068] Alternatively, in other embodiments, there may be multiple pulsating heat pipes 20, each independently arranged and spaced apart along the circumference of the combustion chamber 10A. The evaporation end 21 of each pulsating heat pipe 20 is positioned close to the combustion chamber 10A, and the condensation end 22 of each pulsating heat pipe 20 extends into the preheating chamber 10B. The multiple pulsating heat pipes 20 can be evenly spaced along the circumference of the combustion chamber 10A, ensuring that the evaporation end 21 of each pulsating heat pipe 20 corresponds to the high-temperature heated area of ​​the pot frame body 10 near the combustion chamber 10A. This allows for the simultaneous collection of residual heat from all circumferences of the pot frame body 10, avoiding blind spots where heat cannot be recovered. Each pulsating heat pipe 20 is an independent phase change heat transfer unit. Fluctuations in the working fluid circulation state of a single heat pipe will not interfere with the normal operation of the other heat pipes. Even if the stove 1000 experiences uneven flame or the pot support 100 experiences uneven circumferential heating, waste heat can be recovered through the heat pipes in the corresponding areas, improving the overall operational stability and fault tolerance of the device. In addition, the multiple sets of condensing ends 22 arranged circumferentially can form a multi-point heat exchange structure in the preheating chamber 10B, allowing the secondary air flowing through the preheating chamber 10B to fully contact and exchange heat with the multiple sets of condensing ends 22, improving the preheating uniformity and efficiency of the secondary air. After the preheated secondary air is delivered to the burner 200, it can improve the completeness of gas combustion, reduce heat loss caused by incomplete combustion of gas, and thus steadily improve the overall thermal efficiency of the stove 1000.

[0069] Furthermore, by employing a multi-pulsating heat pipe 20 arrangement, the number of pulsed heat pipes 20 can be flexibly adjusted according to the size and specifications of the pot frame body 10 and the actual heat load of the stove 1000. Without significantly altering the original structure of the pot frame body 10, the overall heat exchange area can be flexibly adjusted, thereby increasing the total amount of waste heat recovery. At the same time, it can avoid the problem of affecting the overall waste heat recovery effect due to local blockage or other malfunctions of a single ring-shaped pulsed heat pipe 20, thus improving the reliability and safety of the device.

[0070] Please see Figure 5 In some embodiments, the height of the evaporation end 21 is lower than that of the condensation end 22. This high-low arrangement utilizes the gravity of the heat exchange medium itself to provide a stable reflux driving force for the condensed liquid working medium. This allows the liquid heat exchange medium, which has completed exothermic condensation at the condensation end 22, to spontaneously flow from the higher condensation end 22 to the lower evaporation end 21. No additional auxiliary reflux structures are needed, ensuring a continuous and stable gas-liquid phase change cycle of the heat exchange medium within the pulsating heat pipe 20. This effectively avoids the problems of liquid working medium stagnation and accumulation at the condensation end 22 and insufficient working medium supply at the evaporation end 21, ensuring the continuity and stability of the heat transfer process in the pulsating heat pipe 20.

[0071] In some specific embodiments, the pulsating heat pipe 20 is inclined upwards from the evaporation end 21 to the condensation end 22 along the height direction of the pot support 100. That is, the pulsating heat pipe 20 is inclined along the radial direction of the pot support body 10 to form a height difference. Along the radial direction of the pot support body 10 from the inner side near the combustion chamber 10A to the outer side away from the combustion chamber 10A, the pulsating heat pipe 20 is arranged in an upward inclined state from the inside to the outside, so that the evaporation end 21 located on the radial inner side is naturally in a lower position and the condensation end 22 located on the radial outer side is naturally in a higher position. In this way, by adapting to the radially inclined arrangement of the annular structure of the pot support body 10, the required height difference between the two ends is stably formed. There is no need to make complex bending adjustments to the tube body of the pulsating heat pipe 20, which simplifies the arrangement process of the tube body inside the pot support body 10 and reduces the difficulty of processing and forming. Meanwhile, the radially inclined arrangement allows the evaporation end 21 to fully fit the high-temperature area of ​​the pot rack body 10 near the combustion chamber 10A, maximizing the absorption of the residual heat accumulated in the pot rack body 10. The condensation end 22 can fully cover the flow path in the preheating chamber 10B, fully exchanging heat with the secondary air flowing through the preheating chamber 10B, further improving the efficiency of heat recovery and transfer, stably ensuring the preheating effect of the secondary air, and continuously improving the heat utilization efficiency of the stove 1000.

[0072] Alternatively, in other embodiments, the pulsating heat pipe 20 includes a first pipe section and a second pipe section. The first pipe section has an evaporation end 21, and the second pipe section has a condensation end 22. The first and second pipe sections are arranged at an angle, such that the height of the evaporation end 21 in the first pipe section is lower than the height of the condensation end 22 in the second pipe section. The first and second pipe sections can be formed by bending the same pipe structure, which not only facilitates the processing and manufacturing of the pulsating heat pipe 20 but also facilitates installation, reduces installation steps, and improves production efficiency. Simultaneously, the integrally bent structure ensures the structural stability and sealing of the pulsating heat pipe 20, preventing leakage of the heat exchange medium from the connection between the first and second pipe sections, thus improving the safety and reliability of the pulsating heat pipe 20. Alternatively, the first and second pipe sections can also adopt a separate structural layout, with the two connected in a sealed manner by welding, bonding, or other methods.

[0073] Please see Figure 2 and Figure 3In some embodiments, the pot support body 10 further includes an air inlet pipe 16. One end of the air inlet pipe 16 is connected to the pot support body 10 and communicates with the preheating chamber 10B. The other end of the air inlet pipe 16 extends to the outside of the pot support body 10 and is used to communicate with a blower to deliver air into the secondary air flow channel 10C. Further, a mounting bracket is provided at the other end of the air inlet pipe 16. The mounting bracket is used to install and fix the blower, enhancing the connection stability between the blower and the pot support body 10. The blower is connected to the other end of the air inlet pipe 16 at the mounting bracket. The blower described here is a device that provides forced airflow to the combustion system of the stove 1000, and can be a centrifugal fan or an axial fan. Meanwhile, the air inlet pipe 16 is directly connected to the pot support body 10, resulting in a compact structure. No additional modifications to the original installation layout of the stove 1000 are required, allowing direct adaptation to stove models with blower functions, thus expanding the applicability and universal compatibility of the pot support 100.

[0074] Secondary air can be forcibly delivered into the preheating chamber 10B via the air inlet pipe 16 and the blower, ensuring a sufficient supply of secondary air throughout the combustion process. The forced-inlet secondary air forms a stable directional flow within the preheating chamber 10B, allowing it to flow fully through the condenser end 22 of the pulsating heat pipe 20, extending the heat exchange contact time, improving the preheating effect of the secondary air, and further enhancing the recovery and utilization rate of waste heat from the boiler support 100. The preheated secondary air can be guided through the annular section 10a and the air supply section 10b of the secondary air flow channel 10C to the premixing chamber 40a of the gas distribution plate 40, supplementing the combustion process with air, avoiding incomplete combustion due to insufficient air, ensuring flame stability, and improving combustion efficiency.

[0075] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0078] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0079] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pot support, characterized in that, include: The main body of the pot frame is arranged in a ring shape and has a combustion chamber formed around it. The combustion chamber is used to house the burner and allow the flame of the burner to pass through. The main body of the pot frame is provided with a preheating chamber and a secondary air flow channel that are connected to each other. The secondary air flow channel is used to transport the secondary air flowing through the preheating chamber to the burner. as well as A pulsating heat pipe is installed inside the main body of the pot frame. The pulsating heat pipe has an evaporation end located near the combustion chamber and a condensation end located away from the combustion chamber. The condensation end is located inside the preheating chamber. The pulsating heat pipe is sealed and filled with a heat exchange medium. The heat released by the condensation end is used to heat the secondary air in the preheating chamber. At least a portion of the wall surface of the secondary airflow channel is formed by the top surface of the main body of the pot frame.

2. The pot support as described in claim 1, characterized in that, The secondary airflow channel includes: An annular segment, surrounding the combustion chamber, is positioned above and communicates with the preheating chamber; and An air supply section, connected to the annular section, is used to deliver secondary air flowing through the annular section to the burner; At least a portion of the wall surface of the annular segment is formed by the top surface of the main body of the pot frame.

3. The pot support as described in claim 2, characterized in that, The annular segment includes at least two sub-annular segments, which are sequentially nested along the radial direction of the main body of the pot frame, and adjacent sub-annular segments are connected. The sub-annular segment near the combustion chamber is connected to the air supply section, while the sub-annular segment away from the combustion chamber is connected to the preheating chamber.

4. The pot support as described in claim 3, characterized in that, The air inlet and air outlet of the sub-annular segment are located on opposite sides of the main body of the pot frame in the radial direction.

5. The pot support as described in claim 2, characterized in that, The main body of the pot frame includes: Lower cover; An upper cover is located above the lower cover. The upper cover is provided with the annular section, the air supply section, and the preheating cavity. At least a portion of the wall surface of the annular section is formed by the top surface of the upper cover. An inner connecting frame connects to the inner edges of the upper and lower covers, and encloses the combustion chamber; and An outer connecting frame is connected to the outer edges of the upper cover and the lower cover, and together with the upper cover, the lower cover and the inner connecting frame, defines a sealed heat-insulating cavity; The pulsating heat pipe passes through the upper cover, with the evaporation end located inside the insulation cavity and abutting against the inner connecting frame, and the condensation end located inside the preheating cavity.

6. The pot support as described in claim 5, characterized in that, The upper cover includes: An annular cover body having the annular segment, at least a portion of the wall surface of the annular segment being formed by the top surface of the annular cover body; An annular preheating element having the preheating cavity, the annular preheating element being connected to the lower part of the annular cover body so that the preheating cavity communicates with the annular segment; and An air supply duct having the air supply section is connected to the annular cover body so that the air supply section communicates with the annular section, and the air supply duct extends at least partially along the height direction of the pot support.

7. The pot support as described in claim 6, characterized in that, The air supply duct includes: The first tube is connected to the annular cover body and extends along the height direction of the pot support; A second tube section, communicating with the first tube section, extends radially along the pot support; and The third pipe section is connected to the second pipe section. The third pipe section is arranged around the combustion chamber and is used to deliver secondary air flowing through the air supply section to the burner.

8. The pot support as described in claim 6, characterized in that, The main body of the pot frame also includes: A support plate is connected to the inner connecting frame. The support plate is annular and surrounds the combustion chamber. The support plate extends upwardly from the inner side of the pot frame body near the combustion chamber to the outer side away from the combustion chamber, and passes through the annular preheating element. The pulsating heat pipe is located on the support plate.

9. The pot support as described in claim 8, characterized in that, Along the height direction of the pot support, the support plate divides the heat preservation cavity into a first chamber and a second chamber. The first chamber is located closer to the combustion chamber than the annular segment, and the evaporation end is located in the first chamber.

10. The pot support as described in claim 9, characterized in that, The second chamber is filled with insulation material.

11. The pot support as described in any one of claims 1-10, characterized in that, The pulsed heat pipe is a single unit, which extends continuously around the combustion chamber in a closed loop. The pulsed heat pipe is bent and has multiple evaporation ends and condensation ends. Each evaporation end is located close to the combustion chamber, and each condensation end extends into the preheating chamber.

12. The pot support as described in any one of claims 1-10, characterized in that, There are multiple pulsating heat pipes, which are independently arranged and spaced apart along the circumference of the combustion chamber. The evaporation end of each pulsating heat pipe is located close to the combustion chamber, and the condensation end of each pulsating heat pipe extends into the preheating chamber.

13. The pot support as described in any one of claims 1-10, characterized in that, The height of the evaporation end is lower than the height of the condensation end.

14. The pot support as described in claim 13, characterized in that, Along the height direction, the pulsating heat pipe is inclined upward from the evaporation end to the condensation end.

15. The pot support as described in any one of claims 1-10, characterized in that, The main body of the pot frame also includes: An air inlet pipe is provided, one end of which is connected to the main body of the pot frame and communicates with the preheating chamber; the other end of the air inlet pipe extends to the outside of the main body of the pot frame and is used to communicate with the blower to deliver air into the secondary air channel.

16. A stove, characterized in that, include: The pot support as described in any one of claims 1-15; as well as A burner is disposed in the combustion chamber, and the burner includes a gas distribution plate, which is connected to the secondary air flow channel.

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