A heating body and a heater

Abstract

This utility model provides a heating element and a heater, relating to the field of heating equipment technology. The heating element includes a heating tube, with a first connecting structure and / or a second connecting structure at its end. The first connecting structure includes a first metal tube and a quick-connect fitting. One end of the first metal tube is connected to and conductively connected to the end of the heating tube, and the quick-connect fitting is located at the other end of the first metal tube and is made of heat-resistant plastic. The second connecting structure includes an integrally formed connecting block and a second metal tube. The connecting block is connected to the end of the heating tube, and the second metal tube is located on the side of the connecting block away from the heating tube and is conductively connected to the interior of the heating tube. The first connecting structure of this utility model uses a quick-connect fitting made of a first metal tube and heat-resistant plastic, while the second connecting structure uses a connecting block and a second metal tube made of metal. The metal material and heat-resistant plastic do not easily absorb substances in the water, effectively preventing the hot water from producing odors and improving water quality and user experience.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and more specifically, to a heating element and a heater. Background Technology

[0002] In the field of heating equipment technology, the heating element is a core component, and the rationality of its inlet and outlet water structure design is crucial. In related technologies, the inlet and outlet water connections of the heating element generally use plastic inlet and outlet sealing caps, connected to the inlet and outlet water passages via silicone tubes. This connection method has the advantages of convenient connection and flexible arrangement, and can meet the connection requirements of the heating element and external water system to a certain extent, thus it has been widely used in the industry.

[0003] However, the above connection method has revealed many problems that urgently need to be solved in actual use. On the one hand, when the silicone tube is in long-term contact with hot water, it may cause the hot water to produce an odor due to diffusion, affecting the water quality and user experience. At the same time, silicone tubes are prone to aging and damage. Once a problem occurs, it will not only cause water leakage, but may also cause the risk of electric leakage, threatening the personal safety of users. On the other hand, silicone tubes need to be tightened and fixed with high-temperature tape, which undoubtedly increases labor and material costs. Moreover, silicone tubes have limited pressure resistance and are prone to detachment and leakage under certain pressure, seriously affecting the normal operation and reliability of the heating equipment. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a heating element and a heater.

[0005] In a first aspect, this utility model provides a heating element, including a heating tube, the end of which is provided with a connecting structure for connecting to an external water pipe. The connecting structure includes a first connecting structure and / or a second connecting structure. The first connecting structure includes a first metal tube and a quick-connect fitting. One end of the first metal tube is connected to and in communication with the end of the heating tube. The quick-connect fitting is located at the other end of the first metal tube and is used to form a detachable sealed connection with the external water pipe. The quick-connect fitting is made of heat-resistant plastic. The second connecting structure includes an integrally formed connecting block and a second metal tube. The connecting block is connected to the end of the heating tube. One end of the second metal tube passes through the connecting block and is in communication with the interior of the heating tube. The other end of the second metal tube is located on the side of the connecting block away from the heating tube and is used to directly connect to the external water pipe.

[0006] Optionally, the first metal tube is connected to the end of the heating tube by welding.

[0007] Optionally, a sealing ring is provided at the connection between the quick-connect fitting and the first metal tube.

[0008] Optionally, the quick connector is provided with a first mounting hole that passes through its internal channel, and a first temperature sensor is installed in the first mounting hole. The signal output terminal of the first temperature sensor is electrically connected to the control circuit.

[0009] Optionally, the quick-connect fitting is made of food-grade polypropylene.

[0010] Optionally, the connecting block is connected to the end of the heating tube by welding.

[0011] Optionally, the connecting block is integrally formed with an installation tube that communicates with the internal flow channel of the heating tube, and a second temperature sensor is installed inside the installation tube. The signal output terminal of the second temperature sensor is electrically connected to the control circuit.

[0012] Optionally, the outer peripheral wall of the second metal tube at the end away from the connecting block is provided with an annular anti-detachment groove.

[0013] Optionally, it also includes a fixing frame surrounding the heating tube; when the first connection structure is used, the housing of the quick connector is connected to the fixing frame; when the second connection structure is used, a connecting plate is provided on the outside of the connecting block, the connecting plate is connected to the fixing frame, and the connecting plate is provided with a clearance hole for the second metal tube to pass through.

[0014] This utility model provides two connection structures for connecting the heating element end to an external water pipe. The first connection structure includes a first metal pipe and a quick-connect fitting. One end of the first metal pipe is connected to and conducts through the heating element end, allowing hot water from the heating element to enter the first metal pipe. The quick-connect fitting is located at the other end of the first metal pipe and, utilizing its structural features (made of heat-resistant plastic with a detachable sealing connection function), forms a detachable sealed connection with the external water pipe, allowing hot water to flow from the heating element through the first metal pipe and the quick-connect fitting into the external water pipe, or vice versa. The second connection structure includes an integrally formed connecting block and a second metal pipe, both made of metal. The integrally formed connecting block connects to the heating element end, providing a stable connection. The main body of the second metal pipe is located on the side of the connecting block away from the heating element and is conductive to the interior of the heating element. The end of the second metal pipe away from the connecting block is directly connected to the external water pipe, allowing hot water to flow between the heating element and the external water pipe through the second metal pipe. Therefore, the first connecting structure of this utility model uses a quick-connect fitting made of a first metal pipe and heat-resistant plastic, while the second connecting structure uses a metal connecting block and a second metal pipe. The metal material and heat-resistant plastic do not easily diffuse into the hot water, effectively preventing odors and improving water quality and user experience. Furthermore, both the first and second connecting structures primarily use metal pipes, which are stable, resistant to aging and damage, reducing the risk of leaks and electrical shocks, and ensuring user safety. The first connecting structure achieves a detachable, sealed connection to the external water pipe via a quick-connect fitting, while the second metal pipe in the second connecting structure directly connects to the external water pipe without the need for high-temperature tape, reducing labor and material costs. In addition, the metal pipe in the connecting structure of this utility model has strong pressure resistance, effectively preventing leaks caused by pressure, thus improving the stability and reliability of the heating equipment.

[0015] Secondly, this utility model provides a heater, including the aforementioned heating element, and has the beneficial effects of the aforementioned heating element compared to the prior art, which will not be elaborated here. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a heating element according to one embodiment of the present invention. Figure 1 ;

[0017] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 for Figure 2Enlarged structural diagram at point B;

[0020] Figure 5 This is a schematic diagram of the structure of a heating element according to one embodiment of the present invention. Figure 2 .

[0021] Explanation of reference numerals in the attached drawings: 1. Heating tube; 2. First connecting structure; 21. First metal tube; 22. Quick connector; 221. First mounting hole; 222. First temperature sensor; 223. Water outlet pipe; 23. Sealing ring; 3. Second connecting structure; 31. Connecting block; 311. Mounting tube; 312. Second temperature sensor; 32. Second metal tube; 321. Anti-detachment groove; 33. Connecting plate; 331. Clearance hole; 4. Fixing frame. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0023] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0024] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0025] like Figure 1 , Figure 2As shown in the figure, a heating element provided by this utility model includes a heating tube 1. The end of the heating tube 1 is provided with a connection structure for connecting to an external water pipe. The connection structure includes a first connection structure 2 and / or a second connection structure 3. The first connection structure 2 includes a first metal tube 21 and a quick connector 22. One end of the first metal tube 21 is connected to and conducts through the end of the heating tube 1. The quick connector 22 is located at the other end of the first metal tube 21 and is used to form a detachable sealed connection with the external water pipe. The quick connector 22 is made of heat-resistant plastic. The second connection structure 3 includes an integrally formed connecting block 31 and a second metal tube 32. The connecting block 31 is connected to the end of the heating tube 1. One end of the second metal tube 32 passes through the connecting block 31 and conducts through the interior of the heating tube 1. The other end of the second metal tube 32 is located on the side of the connecting block 31 away from the heating tube 1 and is used to directly connect to the external water pipe.

[0026] Specifically, there are three technical solutions for the connection structure at both ends of the heating tube 1 in this embodiment: Solution 1: both ends of the heating tube 1 are provided with a first connection structure 2; Solution 2: both ends of the heating tube 1 are provided with a second connection structure 3; Solution 3: both ends of the heating tube 1 are provided with a first connection structure 2 and a second connection structure 3 respectively. The specific technical solution adopted depends on the form of the external water pipeline. In this embodiment, the first connection structure 2 includes a first metal tube 21 and a quick connector 22. One end of the first metal tube 21 is connected to and conducts through the end of the heating tube 1, serving to lead out or introduce fluid from the heating tube 1. The quick connector 22 is located at the other end of the first metal tube 21. Utilizing its own structural characteristics, it can form a detachable sealed connection with the external water pipeline. When connection is required, the external water pipeline is connected to the quick connector 22, and a seal is achieved through the sealing element (such as a sealing ring 23) inside the quick connector 22 to prevent fluid leakage; when disassembly is required, the external water pipeline can be easily separated from the quick connector 22 by following the operation method (such as pressing, rotating, etc.). The quick-connector 22 is made of heat-resistant plastic, capable of withstanding the heat generated during the heating process and ensuring normal operation in high-temperature environments. The second connection structure 3 includes an integrally formed connecting block 31 and a second metal tube 32, so the connecting block 31 and the second metal tube 32 are made of the same metal material. The connecting block 31 is connected to the end of the heating tube 1, serving as a fixation and transition. The second metal tube 32 is located on the side of the connecting block 31 away from the heating tube 1 and is connected to the interior of the heating tube 1, also used to lead or introduce fluid into or out of the heating tube 1. The end of the second metal tube 32 away from the connecting block 31 is directly connected to an external water pipe, ensuring smooth fluid flow between the heating tube 1 and the external water pipe.

[0027] In this embodiment, the first connecting structure 2 uses a first metal pipe 21 and a quick-connect fitting 22 made of heat-resistant plastic. The second connecting structure 3 uses an integrally molded connecting block 31 and a second metal pipe 32 to directly connect to the external water pipe, avoiding long-term contact between the silicone tube and hot water, thus preventing the absorption of substances in the water and the generation of odors, improving water quality and user experience. Furthermore, the connecting structure in this embodiment uses robust and durable materials such as metal pipes and heat-resistant plastics. The metal pipes have good strength and stability, and the quick-connect fitting 22 made of heat-resistant plastics can maintain stable performance at high temperatures, greatly reducing the possibility of aging and damage, effectively eliminating the risk of leakage, and ensuring the personal safety of users. Moreover, the connecting structure in this embodiment does not require additional fixation with high-temperature tape. The first connecting structure 2 achieves a detachable and sealed connection through the quick-connect fitting 22, and the second connecting structure 3 connects to the external water pipe through a direct connection, simplifying the connection process and reducing labor and material costs. In addition, the metal pipes used in this embodiment have high strength and pressure resistance, capable of withstanding large pressures without deformation or damage, ensuring the normal operation of the heating equipment under various pressure conditions and improving the reliability of the equipment.

[0028] Optionally, the first metal tube 21 is connected to the end of the heating tube 1 by welding.

[0029] Specifically, when the first metal tube 21 is connected to the end of the heating tube 1 by welding, the welding process uses high temperature to melt the metal materials at the ends of the first metal tube 21 and the heating tube 1, and then cools and solidifies them, so that the two form an integral and continuous metal structure at the connection, ensuring a seamless and firm connection between the first metal tube 21 and the heating tube 1, so that the fluid can flow smoothly between the heating tube 1 and the first metal tube 21, and there will be no fluid leakage problem caused by loose connection, thereby ensuring the normal operation of the entire heating body water inlet and outlet structure.

[0030] In this optional embodiment, welding is a mature metal joining process. By melting and fusing metals at high temperatures, a very strong connection can be formed between the first metal tube 21 and the heating tube 1. This connection can withstand greater pressure, tension, and vibration, and is less prone to loosening or separation. This greatly improves the stability and reliability of the water inlet and outlet structure of the heating element, reducing equipment failures and maintenance costs caused by connection problems. Furthermore, during the welding process, the metal materials fuse together in a molten state, and after cooling, form a continuous, seamless connection. This effectively prevents fluid leakage at the connection between the first metal tube 21 and the heating tube 1, ensuring that the fluid inside the heating element flows along a predetermined path. This avoids energy waste, equipment damage, and environmental impact caused by leakage. The advantages of welding connections are particularly evident in heating equipment with high sealing requirements.

[0031] Optionally, such as Figure 3 As shown, a sealing ring 23 is provided at the connection between the quick connector 22 and the first metal tube 21.

[0032] Specifically, the quick-connect fitting 22 is located at the other end of the first metal pipe 21, and its function is to form a detachable sealed connection with the external water pipe. When the external water pipe is connected to the quick-connect fitting 22, the sealing ring 23 at the connection between the quick-connect fitting 22 and the first metal pipe 21 will be compressed. The sealing ring 23 is made of an elastic material and will undergo elastic deformation after being compressed, filling any tiny gaps that may exist at the connection between the quick-connect fitting 22 and the first metal pipe 21, thereby preventing fluid leakage from the connection and ensuring that the fluid in the heating pipe 1 can flow smoothly through the first metal pipe 21 and the quick-connect fitting 22 to the external water pipe, realizing a reliable connection and fluid transfer between the heating element and the external water system.

[0033] In this optional embodiment, although the quick-connect coupling 22 and the first metal tube 21 have certain precision requirements in design and manufacturing, minor dimensional deviations and surface roughness issues are inevitable during actual processing. These factors may lead to small gaps at the connection. The sealing ring 23 can effectively fill these gaps, forming a reliable sealing barrier, greatly improving the sealing performance of the connection between the quick-connect coupling 22 and the first metal tube 21, preventing fluid leakage, ensuring the normal operation of the heating element's water inlet and outlet structure, and avoiding energy waste, equipment damage, and potential hazards to the surrounding environment caused by leakage.

[0034] Optionally, such as Figure 3 As shown, the quick connector 22 has a first mounting hole 221 that passes through its internal channel. A first temperature sensor 222 is installed in the first mounting hole 221. The signal output terminal of the first temperature sensor 222 is electrically connected to the control circuit.

[0035] Specifically, when the heating element is working normally, fluid flows through the internal channels, carrying away heat and keeping the temperature within a relatively stable range. However, when the heating tube 1 is short of water, due to insufficient fluid to absorb and carry away heat, the temperature of the heating tube 1 and its connected internal channels (including the internal channels of the quick-connect connector 22) will rise rapidly. The first temperature sensor 222 detects the temperature of the internal channels of the quick-connect connector 22 in real time and converts it into an electrical signal, which is transmitted to the control circuit electrically connected to it through the signal output terminal. After receiving the temperature signal, the control circuit makes a judgment based on a preset temperature threshold. If the detected temperature exceeds the threshold, the control circuit will determine that the heating tube 1 is short of water and take corresponding protective measures, such as stopping heating and issuing an alarm, to prevent the heating element from being damaged due to dry burning.

[0036] In this optional embodiment, by installing a first temperature sensor 222 on the quick-connect connector 22, the water shortage situation in the heating tube 1 can be detected in real time and accurately. Since the quick-connect connector 22 is a key channel for fluid to enter and exit the heating tube 1, setting a temperature sensor at this location can quickly detect abnormal temperature changes caused by water shortage. Compared with some indirect methods of detecting water shortage, this is more timely and reliable, and can effectively prevent the heating element from being damaged by dry burning due to water shortage, thus extending the service life of the heating element.

[0037] Optionally, the quick-connect fittings are made of food-grade polypropylene.

[0038] Specifically, food-grade polypropylene has excellent molding and processing properties, and can be precisely processed into the complex shapes required by the quick-connect fitting 22 through processes such as injection molding, ensuring a tight fit between it and the first metal pipe 21 and the external water pipes. In operation, the fluid flows within the channel formed by the heating pipe 1, the first metal pipe 21, and the quick-connect fitting 22. The food-grade polypropylene quick-connect fitting 22 provides a safe and stable transmission channel for the fluid, while its own physical and chemical properties ensure that it will not adversely affect the fluid throughout the entire transmission process.

[0039] In this optional embodiment, the food-grade polypropylene material meets strict food safety standards and does not contain substances harmful to the human body, such as heavy metals and plasticizers. When the heating element is used to heat fluids that come into direct contact with the human body, such as drinking water, the use of quick-connect fittings 22 made of this material can effectively prevent harmful substances from migrating into the fluid, ensuring the health and safety of users. It is especially suitable for household water dispensers, water purifiers, and other equipment with extremely high requirements for water quality safety.

[0040] In this embodiment, as Figure 1 , Figure 5 As shown, a water outlet pipe 223 is provided at the output end of the quick connector 22. The water outlet pipe 223 can be a bend or a straight pipe. When the water outlet pipe 223 is a bend, the bend can be set to the left, right, forward or backward.

[0041] Specifically, in the structure of the heating element, the quick-connect fitting 22 is used for quick and convenient connection with external water pipes and other components to facilitate water flow. The output end of the quick-connect fitting 22 is equipped with a water outlet pipe 223, which guides the water heated by the heating element in a specific direction. Straight pipe configuration: When the water outlet pipe 223 is straight, the water flows directly out along the axis of the straight pipe after exiting the quick-connect fitting 22. The water flow direction is relatively simple and clear, suitable for applications where the water flow direction requirement is simple and direct, such as directing the water flow directly to a relatively fixed area without directional changes. Bend configuration: When the water outlet pipe 223 is bent, due to the specific bending angle and direction, it can change the outflow direction of the water. Furthermore, the bend can be set to the left, right, forward, or backward, meaning that the outflow direction of the water can be flexibly adjusted according to the actual installation environment, usage requirements, and the layout of other surrounding components. For example, when the quick connector 22 is installed in a confined space and is blocked by other equipment, by setting the bend to the appropriate direction (such as left or right), the water flow can be prevented from interfering with the surrounding equipment, ensuring that the water can flow smoothly to the target location.

[0042] Optionally, the connecting block 31 is connected to the end of the heating tube 1 by welding.

[0043] Specifically, the connecting block 31 is connected to the end of the heating tube 1 by welding. During the welding process, high temperature is used to melt the materials of the connecting block 31 and the end of the heating tube 1, and then cooling allows them to fuse together to form a single structure. This connection method allows the connecting block 31 to be firmly fixed to the end of the heating tube 1, thus providing reliable support and a foundation for subsequent connections with other components. During normal operation of the heating element, the fluid flows and is heated within the heating tube 1. The welded connection between the connecting block 31 and the end of the heating tube 1 ensures the sealing and structural stability of the entire fluid channel, allowing the fluid to flow along a predetermined path, and enabling the heating tube 1 to stably transfer heat to the fluid.

[0044] In this optional embodiment, welding is a permanent connection method. Through high-temperature melting and cooling solidification, the connecting block 31 and the end of the heating tube 1 form an atomic bond, resulting in very high connection strength. This bond can withstand greater tensile, compressive, and torque forces, and is less prone to loosening or detachment, ensuring the structural stability of the heating element during long-term use and reducing malfunctions and safety hazards caused by loose connections. Furthermore, good sealing performance is crucial in the heating element to prevent fluid leakage. The welded connection achieves a seamless connection between the connecting block 31 and the end of the heating tube 1, eliminating gaps or seams and effectively preventing fluid leakage. Even under high internal pressure or corrosive fluid conditions, the welded connection maintains good sealing performance, ensuring the normal operation of the heating element.

[0045] Optionally, such as Figure 4 As shown, the connecting block 31 has an integrally formed mounting tube 311 that connects to the internal flow channel of the heating tube 1. A second temperature sensor 312 is installed inside the mounting tube 311, and the signal output terminal of the second temperature sensor 312 is electrically connected to the control circuit.

[0046] Specifically, the connecting block 31 is connected to the end of the heating tube 1, and its integrally formed mounting tube 311 directly connects to the internal flow channel of the heating tube 1. This provides the second temperature sensor 312 with a direct channel to contact the fluid inside the heating tube 1. The second temperature sensor 312 is installed inside the mounting tube 311, with its detection end extending into the internal flow channel of the heating tube 1, enabling it to sense the temperature of the fluid inside the heating tube 1 in real time. When there is sufficient fluid inside the heating tube 1, the fluid carries away the heat generated during its flow, keeping the temperature within a relatively stable range. However, when there is a water shortage in the heating tube 1, the temperature of the heating tube 1 and its internal fluid will rise rapidly due to insufficient fluid to absorb and carry away the heat. The second temperature sensor 312 converts the detected temperature change into an electrical signal, which is transmitted to the control circuit electrically connected to it through the signal output terminal. After receiving the signal, the control circuit makes a judgment based on a preset temperature threshold. If the detected temperature exceeds the threshold, it can be determined that there is a water shortage in the heating tube 1, thereby controlling the heating element to stop heating or taking other protective measures to prevent the heating element from being damaged due to dry burning.

[0047] In this optional embodiment, the second temperature sensor 312 extends directly into the internal flow channel of the heating tube 1, enabling it to directly detect the actual temperature of the fluid inside the heating tube 1. This avoids errors caused by intermediate steps or indirect measurements, thus more accurately determining the water shortage status inside the heating tube 1 and greatly improving detection accuracy. Furthermore, because the second temperature sensor 312 is extremely close to the fluid inside the heating tube 1, it can detect temperature changes almost in real time. Once a water shortage occurs inside the heating tube 1, the temperature rises rapidly, and the sensor can immediately detect this and send a signal, allowing the control circuit to react quickly and stop heating in time. This effectively prevents the heating element from burning out and being damaged, and the response speed is far superior to some indirect detection methods.

[0048] Optionally, such as Figure 4 As shown, the outer peripheral wall of the second metal tube 32 away from the connecting block 31 is provided with an annular anti-detachment groove 321.

[0049] Specifically, the end of the second metal tube 32 furthest from the connecting block 31 needs to be connected to external components such as the quick-connect fitting 22. An annular anti-detachment groove 321 is provided on the outer peripheral wall of the end of the second metal tube 32 furthest from the connecting block 31. When the second metal tube 32 is assembled with components such as the quick-connect fitting 22, the quick-connect fitting 22 usually has a structure (such as an elastic claw or a retaining ring) that matches the annular anti-detachment groove 321. During assembly, the second metal tube 32 is inserted into the quick-connect fitting 22, and the matching structure inside the quick-connect fitting 22 engages with the annular anti-detachment groove 321. Because the annular anti-detachment groove 321 has a certain depth and width, the structure inside the quick-connect fitting 22 cannot easily detach from the groove, thus achieving a stable connection between the second metal tube 32 and the quick-connect fitting 22. This prevents the second metal tube 32 from detaching from the quick-connect fitting 22 due to external forces (such as fluid impact or pipe vibration) during use, ensuring the sealing and connection reliability of the entire heating element fluid channel. In this embodiment, the length of the second metal tube 32 can be adjusted according to actual installation needs.

[0050] In this optional embodiment, the annular anti-detachment groove 321 provides a mechanical locking mechanism for the second metal tube 32 and quick connector 22 and other components, which can withstand greater tension and torque, effectively preventing the second metal tube 32 from loosening or falling off due to various external forces during use, greatly improving the stability and reliability of the connection, and reducing the probability of failures such as fluid leakage caused by loose connection.

[0051] Optionally, such as Figure 5As shown, it also includes a fixing frame 4 surrounding the heating tube 1; when the first connection structure 2 is used, the housing of the quick connector 22 is connected to the fixing frame 4; when the second connection structure 3 is used, a connecting plate 33 is provided on the outside of the connecting block 31, the connecting plate 33 is connected to the fixing frame 4, and the connecting plate 33 is provided with a clearance hole 331 for the second metal tube 32 to pass through.

[0052] Specifically, the fixed frame 4, as the basic support component of the entire structure, surrounds and fixes the heating tube 1, providing a stable reference frame for the connection of other components. When the first connection structure 2 is used, the quick-connect fitting 22, as a key component connecting the external pipe to the internal flow channel of the heating tube 1, has its shell directly connected to the fixed frame 4. This allows the quick-connect fitting 22 to be more firmly positioned near the heating tube 1 thanks to the stability of the fixed frame 4. When fluid enters or exits the heating tube 1 through the quick-connect fitting 22, the quick-connect fitting 22 will not shake or shift due to fluid pressure or impact, ensuring the sealing of the fluid channel and the reliability of the connection. When the second connection structure 3 is used, the connecting block 31 is an important component connecting the heating tube 1 to other components (such as the second metal tube 32, temperature sensor, etc.). A connecting plate 33 is provided on the outside of the connecting block 31, and the connecting plate 33 is connected to the fixed frame 4, providing a stable support platform for the connecting block 31. Meanwhile, the clearance hole 331 on the connecting plate 33 allows the second metal tube 32 to pass through smoothly, which does not affect the connection between the second metal tube 32 and the heating tube 1 and the fluid transmission function, and can tightly connect the connecting block 31 to the fixed frame 4 through the connecting plate 33, making the whole structure more stable.

[0053] In this optional embodiment, the fixed frame 4 provides a stable framework for the entire heating element structure. Whether the quick connector 22 is directly connected to the fixed frame 4 through the first connecting structure 2, or the connecting block 31 is connected to the fixed frame 4 through the connecting plate 33, the relative positions between the various components are more fixed, reducing problems such as component loosening and displacement caused by external forces (such as fluid impact, pipe vibration, etc.), and greatly improving the stability and reliability of the entire heating element structure.

[0054] This utility model provides a heater, which includes the heating element as described above.

[0055] The heater in this embodiment has the same beneficial effects over the prior art as the heating element described above, and will not be repeated here.

[0056] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A heating element, comprising a heating tube (1), wherein the end of the heating tube (1) is provided with a connecting structure for connecting to an external water pipe, characterized in that, The connection structure includes a first connection structure (2) and / or a second connection structure (3); the first connection structure (2) includes a first metal pipe (21) and a quick connector (22), one end of the first metal pipe (21) is connected to and conducts through the end of the heating pipe (1), the quick connector (22) is located at the other end of the first metal pipe (21) and is used to form a detachable sealed connection with an external water pipe, and the quick connector (22) is made of heat-resistant plastic; the second connection structure (3) includes an integrally formed connecting block (31) and a second metal pipe (32), the connecting block (31) is connected to the end of the heating pipe (1), one end of the second metal pipe (32) passes through the connecting block (31) and conducts through the interior of the heating pipe (1), the other end of the second metal pipe (32) is located on the side of the connecting block (31) away from the heating pipe (1) and is used to directly connect to an external water pipe.

2. The heating element according to claim 1, characterized in that, The first metal tube (21) is connected to the end of the heating tube (1) by welding.

3. The heating element according to claim 1, characterized in that, A sealing ring (23) is provided at the connection between the quick connector (22) and the first metal tube (21).

4. The heating element according to claim 1, characterized in that, The quick connector (22) is provided with a first mounting hole (221) that passes through its internal channel. A first temperature sensor (222) is installed in the first mounting hole (221). The signal output terminal of the first temperature sensor (222) is electrically connected to the control circuit.

5. The heating element according to claim 1, characterized in that, The quick connector (22) is made of food-grade polypropylene.

6. The heating element according to claim 1, characterized in that, The connecting block (31) is connected to the end of the heating tube (1) by welding.

7. The heating element according to claim 6, characterized in that, The connecting block (31) has an integrally formed mounting tube (311) that connects to the internal flow channel of the heating tube (1). A second temperature sensor (312) is installed inside the mounting tube (311), and the signal output terminal of the second temperature sensor (312) is electrically connected to the control circuit.

8. The heating element according to claim 6, characterized in that, The outer peripheral wall of the second metal tube (32) away from the connecting block (31) is provided with an annular anti-detachment groove (321).

9. The heating element according to claim 1, characterized in that, It also includes a fixing frame (4) surrounding the heating tube (1); when the first connection structure (2) is used, the housing of the quick connector (22) is connected to the fixing frame (4); when the second connection structure (3) is used, a connecting plate (33) is provided on the outside of the connecting block (31), the connecting plate (33) is connected to the fixing frame (4), and the connecting plate (33) is provided with a clearance hole (331) for the second metal tube (32) to pass through.

10. A heater, characterized in that, Includes a heating element as described in any one of claims 1 to 9.

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