An aluminium-based liquid heating device

Abstract

The utility model discloses an aluminum base heating liquid heating device, including device body, device body includes main body frame, first sealing material frame, first aluminum base electric heating plate, first protective cover, second sealing material frame, second aluminum base electric heating plate, second protective cover and locking screw, first sealing material frame and second sealing material frame are rectangular shape structure and the corner is arc shape structure, and first sealing material frame and second sealing material frame are rubber material, and first sealing material frame is installed in the inside top of main body frame, and first aluminum base electric heating plate is fixed in the top of main body frame through locking screw, and first sealing material frame is located first aluminum base electric heating plate bottom, and first protective cover is installed in the top of main body frame through locking screw, and first aluminum base electric heating plate is located first protective cover top. The device heat conduction efficiency, cost control, mechanical reliability, electric performance stability etc. Dimension comprehensive breakthrough.

Description

Technical Field

[0001] This utility model relates to the technical field of electric heating liquid heating devices, specifically an aluminum-based heating liquid heating device. Background Technology

[0002] Electric liquid heating devices, as a medium for electro-thermal conversion, can convert electrical energy into heat energy. They are simple to control, have a simple structure, and reliable performance, making them the primary liquid heating devices in civilian, commercial, and automotive applications. Currently, the main types of electric liquid heating devices include:

[0003] 1. Metal tube / plate heaters: The existing materials in contact with liquids are mainly stainless steel, titanium, and copper. Stainless steel has strong corrosion resistance but low thermal conductivity and heavy weight. Titanium has good stability but low thermal conductivity and high cost. Copper has high thermal conductivity but high cost and heavy weight.

[0004] 2. Ceramic heaters, the material in contact with the liquid is sintered ceramic, which has strong corrosion resistance, but low thermal conductivity and is fragile;

[0005] 3. PTC heaters are mainly made of aluminum alloy in contact with liquids, and the heat-generating material is a positive temperature coefficient ceramic and metal powder sintered sheet. The advantage of PTC is that the impedance increases sharply above the Curie temperature, which can limit the maximum temperature value. However, the capacitive reactance is large, the peak current and voltage during switching are large, the power regulation fluctuates greatly and is unstable, and the heating volume density is small. The electrode plates are close together and the ceramic plates are easy to break down under high voltage.

[0006] Summarize:

[0007] All known electric heating liquid heating devices have certain defects, and the heating efficiency of all of the above heating devices is less than 90%, so a solution is needed. Utility Model Content

[0008] The purpose of this invention is to provide an aluminum-based liquid heating device to solve the problems mentioned in the background art, which can improve the heating efficiency to more than 98% and reduce the volume by 1 / 3.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A liquid heating device based on aluminum is disclosed, comprising a device body, the device body including a main frame, a first sealing material frame, a first aluminum-based electric heating plate, a first protective cover, a second sealing material frame, a second aluminum-based electric heating plate, a second protective cover, and locking screws; the first and second sealing material frames are rectangular with arc-shaped corners, and are made of rubber; the first sealing material frame is installed at the top inside the main frame; the first aluminum-based electric heating plate is fixed to the top of the main frame by locking screws, with the first sealing material frame located at the bottom of the first aluminum-based electric heating plate; the first protective cover is installed at the top of the main frame by locking screws, with the first aluminum-based electric heating plate located above the first protective cover; the second sealing material frame is installed at the bottom inside the main frame; the second aluminum-based electric heating plate is installed at the bottom of the main frame by locking screws, with the second aluminum-based electric heating plate located at the bottom of the second sealing material frame; the second protective cover is installed at the bottom of the main frame by locking screws, with the second protective cover located below the second aluminum-based electric heating plate.

[0011] In a preferred embodiment of this utility model, the main frame includes a frame block and a connecting block. The frame block and the connecting block are smoothly transitioned and integrally formed. The frame block is located at the right end of the connecting block. Both the frame block and the connecting block are rectangular in shape. The interior of the frame block is a through structure. The four corners of the frame block are arc-shaped. Sealing installation grooves are provided on the outer side of the top and bottom of the interior of the frame block. Locking holes are provided at the four corners of the top of the sealing installation groove.

[0012] In a preferred embodiment of this utility model, a flow guiding installation block is provided inside the frame block. The flow guiding installation block has a rectangular structure. Several sets of flow guiding plates are provided between the left side of the flow guiding installation block and the inner wall of the frame block, and between the right side of the flow guiding installation block and the inner wall of the frame block. The flow guiding plates have an arc-shaped structure. A set of reinforcing blocks are provided at the right end of the frame block in a symmetrical manner. The reinforcing blocks have a triangular shape. A flow guiding block is provided between the set of reinforcing blocks and the flow guiding installation block. The flow guiding block has an arc-shaped structure. Several sets of locking holes are provided on the outer top and outer bottom of the frame block.

[0013] In a preferred embodiment of this utility model, the left end of the connecting block is provided with an installation block, the installation block has a rectangular structure, the left end of the installation block is provided with a water inlet pipe and a drain pipe respectively, the right end of the connecting block is provided with a water inlet and a drain outlet respectively, the water inlet and the drain outlet are both rectangular structures, the water inlet pipe and the water inlet are through structures, and the drain pipe and the drain outlet are through structures.

[0014] In a preferred embodiment of the present invention, both the first protective cover and the second protective cover include a main cover body and a side sealing edge. Both the main cover body and the side sealing edge are rectangular in shape. Both the main cover body and the side sealing edge are smoothly transitioned and integrally formed. The side sealing edge is located outside the main cover body. The four corners of the side sealing edge are arc-shaped. Several sets of locking holes are opened on the surface of the side sealing edge.

[0015] In a preferred embodiment of the present invention, both the first aluminum-based electric heating plate and the second aluminum-based electric heating plate include an aluminum-based heating plate body, a sampling device, an electrical component, and a connecting device. The aluminum-based heating plate body has a rectangular structure, and the four corners of the aluminum-based heating plate body have an arc-shaped structure. Several sets of locking holes are provided on the outer side of the surface of the aluminum-based heating plate body. The sampling device, electrical component, and connecting device are all installed on the surface of the aluminum-based heating plate body.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In this utility model's aluminum-based liquid heating device, the core breakthrough lies in the aluminum-based electric heating plate: its thermal conductivity (approximately 237 W / (m·K)) far exceeds that of stainless steel and ceramics, approaching that of copper, while also possessing the advantages of low cost and lightweight design (the heating efficiency of the aluminum substrate is higher than 98%, while that of ordinary PTC is lower than 90%. Compared to the latter, the aluminum substrate has a higher heating efficiency and a smaller volume, with a thickness reduced by one-third compared to ordinary PCT heaters). The integrated sampling device, electrical components, and connecting devices can also precisely control the power, avoiding the electrical performance defects of PTC; simultaneously, the main body... The frame incorporates flow-guiding installation blocks, arc-shaped flow-guiding plates, and flow-guiding blocks within its main body. These, along with the connecting blocks' through-type inlet / outlet pipes and rectangular inlet / outlet ports, force the liquid to form a diversion → spiral flow → confluence path, significantly increasing the contact area and time with the heating plate, thus improving heating uniformity and efficiency. The first and second rubber sealing material frames (rectangular arc-corner structures) precisely fit the sealing installation grooves of the frame blocks. These are then combined with the first and second protective covers (an integrally molded rectangular arc-corner main cover + side sealing edges) and secured with locking screws, constructing a multi-layered sealing structure that completely eliminates the risk of liquid leakage. Through the synergy of material properties and structural design, this solution achieves comprehensive breakthroughs in thermal conductivity efficiency, cost control, mechanical reliability, and electrical performance stability, representing a generational upgrade over existing technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0020] Figure 3This is a schematic diagram of the internal structure of the main frame of this utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the main frame, the first protective cover, and the second protective cover of this utility model;

[0022] Figure 5 This is a schematic diagram of the main frame and the first aluminum-based electric heating plate installation structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the first aluminum-based electric heating plate of this utility model.

[0024] In the diagram: 1. Device body; 2. Main frame; 3. First sealing material frame; 4. First aluminum-based electric heating plate; 5. First protective cover; 6. Second sealing material frame; 7. Second aluminum-based electric heating plate; 8. Second protective cover; 9. Frame block; 10. Connecting block; 11. Sealing mounting groove; 12. Flow guiding mounting block; 13. Flow guiding plate; 14. Reinforcing block; 15. Flow guiding block; 16. Locking hole; 17. Mounting block; 18. Water inlet pipe; 19. Drain pipe; 20. Water inlet; 21. Drain outlet; 22. Main cover; 23. Side sealing edge; 24. Aluminum-based heating plate; 25. Sampling device; 26. Electrical components; 27. Connecting device; 28. Locking screw. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This utility model provides a technical solution:

[0027] A liquid heating device based on aluminum is provided, comprising a device body 1. The device body 1 includes a main frame 2, a first sealing material frame 3, a first aluminum-based electric heating plate 4, a first protective cover 5, a second sealing material frame 6, a second aluminum-based electric heating plate 7, a second protective cover 8, and locking screws 28. The first sealing material frame 3 and the second sealing material frame 6 are rectangular in shape with arc-shaped corners. The first sealing material frame 3 and the second sealing material frame 6 are made of rubber. The first sealing material frame 3 is installed inside the top of the main frame 2. The first aluminum-based electric heating plate 4 is fixed to the main frame by the locking screws 28. 2. At the top, the first sealing material frame 3 is located at the bottom of the first aluminum-based electric heating plate 4. The first protective cover 5 is installed on the top of the main frame 2 by locking screws 28. The first aluminum-based electric heating plate 4 is located above the first protective cover 5. The second sealing material frame 6 is installed at the bottom of the inner end of the main frame 2. The second aluminum-based electric heating plate 7 is installed at the bottom of the main frame 2 by locking screws 28. The second aluminum-based electric heating plate 7 is located at the bottom of the second sealing material frame 6. The second protective cover 8 is installed at the bottom of the main frame 2 by locking screws 28. The second protective cover 8 is located below the second aluminum-based electric heating plate 7.

[0028] Analysis of the above: The device body 1 is supported by the main frame 2. The first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7 heat the internal liquid from the top and bottom, respectively. The first sealing material frame 3 and the second sealing material frame 6 fill the gap between the heating plate and the main frame 2 to achieve liquid sealing. The first protective cover 5 and the second protective cover 8 are fixed by locking screws 28, forming physical protection for the upper and lower heating plates to avoid damage from external impacts. During installation: First, embed the first sealing material frame 3 and the second sealing material frame 6 into the corresponding positions of the main frame 2, and then fix the first aluminum-based electric heating plate 4, the second aluminum-based electric heating plate 7, the first protective cover 5, and the second protective cover 8 in sequence by locking screws 28, ensuring that the sealing frames are completely fitted. During maintenance: Loosen the locking screws. Screw 28 allows for the individual removal of the first protective cover 5, the second protective cover 8, or the first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7, facilitating the replacement of damaged parts. When heating high-viscosity liquids: the upper and lower dual heating plates work simultaneously to increase the heating rate and prevent liquid stagnation. The dual heating plate design improves heating efficiency and shortens the liquid heating time. The combination of the first sealing material frame 3, the second sealing material frame 6, and the locking screw 28 ensures reliable sealing and prevents liquid leakage. The first protective cover 5 and the second protective cover 8 provide physical protection for the heating plates and extend their service life (the heating efficiency of the aluminum substrate is higher than 98%, while the heating efficiency of ordinary PTC is lower than 90%. Compared with the aluminum substrate, the heating efficiency is higher, and the aluminum substrate is smaller in size, with a thickness reduced by one-third compared to ordinary PCT heaters).

[0029] Example 2:

[0030] Please see Figure 1-6 This utility model provides a technical solution based on Embodiment 1: The main frame 2 includes a frame block 9 and a connecting block 10. The frame block 9 and the connecting block 10 are smoothly transitioned and integrally formed. The frame block 9 is located at the right end of the connecting block 10. Both the frame block 9 and the connecting block 10 are rectangular in shape. The interior of the frame block 9 is a through structure. The four corners of the frame block 9 are arc-shaped. The outer side of the top end and the outer side of the bottom end of the interior of the frame block 9 are provided with sealing installation grooves 11. Locking holes 16 are opened at the four corners of the top of the sealing installation grooves 11.

[0031] Analysis of the above content: The main frame 2 is integrally formed from the frame block 9 and the connecting block 10, serving as the structural skeleton of the entire device and bearing the weight of the internal liquid and other components. The through-type structure inside the frame block 9 provides a channel for liquid flow. The sealing installation groove 11 is used to accurately position the first sealing material frame 3 and the second sealing material frame 6. The locking hole 16, in conjunction with the locking screw 28, secures each component. During assembly: the sealing installation groove 11 quickly positions the first sealing material frame 3 and the second sealing material frame 6, ensuring accurate sealing position. After long-term use: if scale forms on the inner wall of the frame block 9, it can be cleaned by flushing through the through-type structure. In high-intensity working scenarios: the integrally formed frame block 9 and the connecting block 10 can withstand high liquid pressure without additional reinforcement. The frame block 9 and the connecting block 10 have a smooth transition and are integrally formed, resulting in high structural strength and strong resistance to deformation. The sealing installation groove 11 accurately positions the first sealing material frame 3 and the second sealing material frame 6, avoiding sealing failure due to installation deviation. The four-corner arc-shaped structure reduces stress concentration and extends the service life of the frame.

[0032] Example 3:

[0033] Please see Figure 1-6 This utility model provides a technical solution based on Embodiment 1: The frame block 9 is provided with a flow guiding installation block 12 inside. The flow guiding installation block 12 has a rectangular structure. Several sets of flow guiding plates 13 are provided between the left side of the flow guiding installation block 12 and the inner wall of the frame block 9 and between the right side of the flow guiding installation block 12 and the inner wall of the frame block 9. The flow guiding plates 13 have an arc shape. A set of reinforcing blocks 14 are provided at the right end of the frame block 9 in a symmetrical manner. The reinforcing blocks 14 have a triangular shape. A flow guiding block 15 is provided between the set of reinforcing blocks 14 and the flow guiding installation block 12. The flow guiding blocks 14 have an arc shape. Several sets of locking holes 16 are provided on the outer top and outer bottom of the frame block 9.

[0034] Analysis of the above: The flow-guiding installation block 12 and the arc-shaped flow-guiding plate 13 inside the frame block 9 divide the liquid into multiple transverse flows, forcing the liquid to flow along an arc-shaped path, increasing the contact area and time with the upper and lower first aluminum-based electric heating plates 4 and the second aluminum-based electric heating plate 7; the triangular reinforcing block 14 enhances the structural strength of the right end of the frame block 9, and the arc-shaped flow-guiding block 15 guides the convergence of the divided liquid, ensuring smooth flow. When heating low-flow liquid: the flow-guiding effect of the flow-guiding plate 13 avoids local liquid stagnation and ensures uniform heating; when heating high-flow liquid: the arc-shaped flow-guiding plate 13 and the flow-guiding block 15 reduce flow resistance and energy consumption; during maintenance and cleaning: the arc-shaped structure has no dead corners, making it easy to rinse away residual liquid or impurities. The arc-shaped design of the flow-guiding plate 13 and the flow-guiding block 15 optimizes the liquid flow channel and improves heating uniformity; multiple sets of transversely equidistantly distributed flow-guiding plates 13 increase heat exchange efficiency and reduce energy loss; the triangular reinforcing block 14 enhances the structural stability of the frame block 9 and adapts to high-pressure working environments.

[0035] Example 4:

[0036] Please see Figure 1-6 The present invention provides a technical solution based on Embodiment 1: the left end of the connecting block 10 is provided with an installation block 17, the installation block 17 has a rectangular structure, the left end of the installation block 17 is provided with an inlet pipe 18 and a drain pipe 19 respectively, the right end of the connecting block 10 is provided with an inlet 20 and a drain outlet 21 respectively, the inlet 20 and the drain outlet 21 are both rectangular structures, the inlet pipe 18 and the inlet 20 are through structures, and the drain pipe 19 and the drain outlet 21 are through structures.

[0037] Analysis of the above: Connecting block 10 secures the device to the external system via mounting block 17 on the left end; inlet pipe 18 connects to inlet 20, introducing external liquid into the frame block 9; drain pipe 19 connects to drain outlet 21, discharging heated liquid; rectangular inlet 20 and drain outlet 21 match the internal flow channel of frame block 9, ensuring smooth liquid flow. When connected to external pipes: the mounting block 17 secures the inlet pipe 18 and drain pipe 19, allowing them to adapt to external pipes of different diameters. Liquid switching is also possible. Cleaning fluid can be introduced through the inlet pipe 18 and discharged through the drain outlet 21 to achieve internal pipe cleaning. When adjusting the flow rate: the large cross-section design of the rectangular inlet 20 and drain outlet 21 supports high flow rate liquid passage without additional expansion. The through-type inlet pipe 18, drain pipe 19 and inlet 20, drain outlet 21 ensure low liquid flow resistance and low energy consumption. The mounting block 17 facilitates the fixing of the device to the external system and improves the overall installation stability. The rectangular inlet and outlet are adapted to the internal flow channel of the frame block 9 to avoid energy loss caused by liquid turbulence.

[0038] Example 5:

[0039] Please see Figure 1-6Based on Embodiment 1, this utility model provides a technical solution: both the first protective cover 5 and the second protective cover 8 include a main cover body 22 and a side sealing edge 23. The main cover body 22 and the side sealing edge 23 are both rectangular in shape. The main cover body 22 and the side sealing edge 23 are both smoothly transitioned and integrally formed. The side sealing edge 23 is located outside the main cover body 22. The four corners of the side sealing edge 23 are all arc-shaped. The surface of the side sealing edge 23 is provided with a plurality of locking holes 16.

[0040] Analysis of the above content: The main cover 22 covers the outside of the first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7, isolating them from external dust, moisture and physical impact; the side sealing edge 23 fits into the main frame 2 and is fixed by locking holes 16 and locking screws 28, while enhancing the edge sealing performance; the integrally formed main cover 22 and side sealing edge 23 ensure the integrity of the structure and avoid local deformation. In daily use: the main cover 22 protects the first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7 from external collisions, and the side sealing edge 23 prevents liquid from splashing onto the electrical components of the heating plate. During maintenance: the first protective cover 5 and the second protective cover 8 can be quickly disassembled by loosening the locking screws 28, allowing direct contact with the first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7 for inspection or replacement. In humid environments: the arc-shaped four corners of the side sealing edge 23 prevent water accumulation and reduce the risk of corrosion. The one-piece molded main cover 22 and side sealing edge 23 have high strength and strong impact resistance, effectively protecting the heating plate. The side sealing edge 23 enhances the installation seal and prevents external impurities from entering the heating area. The arc-shaped four corners design reduces stress concentration, improves the service life of the outer cover, and facilitates cleaning.

[0041] Example 6:

[0042] Please see Figure 1-6 This utility model provides a technical solution based on Embodiment 1: Both the first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7 include an aluminum-based heating plate body 24, a sampling device 25, an electrical component 26, and a connecting device 27. The aluminum-based heating plate body 24 has a rectangular structure, and the four corners of the aluminum-based heating plate body 24 have an arc-shaped structure. Several sets of locking holes 16 are provided on the outer side of the surface of the aluminum-based heating plate body 24. The sampling device 25, the electrical component 26, and the connecting device 27 are all installed on the surface of the aluminum-based heating plate body 24.

[0043] Analysis of the above: The aluminum-based heating plate 24 serves as the core heating component, utilizing the high thermal conductivity of aluminum to rapidly transfer the heat converted from electrical energy to the liquid; the sampling device 25 monitors the heating plate temperature in real time, the electrical component 26 adjusts the heating power according to the temperature signal, and the connecting device 27 connects to an external power source; the locking hole 16, together with the locking screw 28, fixes the heating plate to the main frame 2. For low-temperature heating requirements: the electrical component 26 reduces its output power, and the sampling device 25 maintains a constant temperature; for high-temperature heating requirements: the power is increased, and the aluminum-based heating plate 24... The high thermal conductivity of the aluminum-based heating plate 24 ensures rapid heat transfer and avoids local overheating. During troubleshooting, the continuity of the circuit is detected by the connecting device 27, and the sampling device 25 can quickly locate the abnormal temperature point. The aluminum-based heating plate 24 has a high thermal conductivity (approximately 237 W / (m·K)) and its heating efficiency is better than that of stainless steel, ceramic and other materials. The integrated sampling device 25 and electrical components 26 achieve precise temperature control and avoid power fluctuations. The rectangular arc corner structure is compatible with the main frame 2, ensuring stable installation and facilitating sealing with the first sealing material frame 3 and the second sealing material frame 6.

[0044] Working principle: During operation, the main frame 2 serves as the structural support foundation. The liquid to be heated is introduced through the water inlet pipe 18 on the mounting block 17 at the left end of the connecting block 10, and enters the interior of the frame block 9 through the through-hole 20. The flow guiding mounting block 12, the arc-shaped flow guiding plate 13, and the flow guiding block 15 inside the frame block 9 work together to divide the liquid into multiple transverse flows and guide them to flow along an arc-shaped path, greatly increasing the contact area and time between the liquid and the first aluminum-based electric heating plate 4 and the second aluminum-based electric heating plate 7. The aluminum-based heating plate bodies 24 of the aluminum-based electric heating plates 4 and 7 convert electrical energy into heat energy. Simultaneously, the temperature is monitored in real time by the sampling device 25, and the power is precisely controlled by the electrical components 26 to achieve efficient and uniform heating of the liquid. The heated liquid is discharged through the drain outlet 21 and the drain pipe 19. During the process, the rubber material of the first sealing material frame 3 and the second sealing material frame 6 is embedded in the sealing installation groove 11 of the frame block 9 to form a reliable seal to prevent liquid leakage. The first protective cover 5 and the second protective cover 8 are fixed to the main frame 2 by the locking screws 28 to form physical protection for the aluminum-based electric heating plates 4 and 7. All components work together to achieve stable and efficient heating of the liquid.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum-based liquid heating device, characterized in that: The device includes a main body (1), which includes a main frame (2), a first sealing material frame (3), a first aluminum-based electric heating plate (4), a first protective cover (5), a second sealing material frame (6), a second aluminum-based electric heating plate (7), a second protective cover (8), and locking screws (28). The first sealing material frame (3) and the second sealing material frame (6) are rectangular in shape with arc-shaped corners. The first sealing material frame (3) and the second sealing material frame (6) are made of rubber. The first sealing material frame (3) is installed inside the top of the main frame (2). The first aluminum-based electric heating plate (4) is fixed to the top of the main frame (2) by locking screws (28). The first sealing material frame (3) is located at the bottom of the first aluminum-based electric heating plate (4). The first protective cover (5) is installed on the main frame by locking screws (28). At the top of the frame (2), the first aluminum-based electric heating plate (4) is located above the first protective cover (5), the second sealing material frame (6) is installed at the bottom of the inner end of the main frame (2), the second aluminum-based electric heating plate (7) is installed at the bottom of the main frame (2) by locking screws (28), the second aluminum-based electric heating plate (7) is located at the bottom of the second sealing material frame (6), the second protective cover (8) is installed at the bottom of the main frame (2) by locking screws (28), and the second protective cover (8) is located below the second aluminum-based electric heating plate (7).

2. The aluminum-based liquid heating device according to claim 1, characterized in that: The main frame (2) includes a frame block (9) and a connecting block (10). The frame block (9) and the connecting block (10) are smoothly transitioned and integrally formed. The frame block (9) is located at the right end of the connecting block (10). The frame block (9) and the connecting block (11) are both rectangular. The interior of the frame block (9) is a through structure. The four corners of the frame block (9) are arc-shaped. The outer side of the top end and the outer side of the bottom end of the frame block (9) are provided with sealing installation grooves (11). Locking holes (16) are opened at the four corners of the top of the sealing installation grooves (11).

3. The aluminum-based liquid heating device according to claim 2, characterized in that: The frame block (9) is provided with a flow guide installation block (12) inside. The flow guide installation block (12) has a rectangular structure. The left side of the flow guide installation block (12) is provided with the inner wall of the frame block (9), and the right side of the flow guide installation block (12) is provided with the inner wall of the frame block (9). The flow guide plate (13) has an arc shape. The right end of the frame block (9) is provided with a set of symmetrically distributed reinforcing blocks (14). The reinforcing blocks (14) have a triangular shape. A flow guide block (15) is provided between the reinforcing block (14) and the flow guide installation block (12). The flow guide block (14) has an arc shape. The outer top and outer bottom of the frame block (9) are provided with a set of locking holes (16).

4. The aluminum-based liquid heating device according to claim 2, characterized in that: The left end of the connecting block (10) is provided with an installation block (17), which is rectangular in shape. The left end of the installation block (17) is provided with an inlet pipe (18) and a drain pipe (19). The right end of the connecting block (10) is provided with an inlet (20) and a drain outlet (21), which are both rectangular in shape. The inlet pipe (18) and the inlet (20) are connected in a through-type structure, and the drain pipe (19) and the drain outlet (21) are connected in a through-type structure.

5. The aluminum-based liquid heating device according to claim 1, characterized in that: Both the first protective cover (5) and the second protective cover (8) include a main cover body (22) and a side sealing edge (23). The main cover body (22) and the side sealing edge (23) are rectangular in shape. The main cover body (22) and the side sealing edge (23) are smooth transition and integrally formed. The side sealing edge (23) is located outside the main cover body (22). The four corners of the side sealing edge (23) are arc-shaped. The surface of the side sealing edge (23) is provided with several sets of locking holes (16).

6. The aluminum-based liquid heating device according to claim 1, characterized in that: Both the first aluminum-based electric heating plate (4) and the second aluminum-based electric heating plate (7) include an aluminum-based heating plate body (24), a sampling device (25), an electrical component (26), and a connecting device (27). The aluminum-based heating plate body (24) has a rectangular structure, and the four corners of the aluminum-based heating plate body (24) have an arc-shaped structure. Several sets of locking holes (16) are provided on the outer side of the surface of the aluminum-based heating plate body (24). The sampling device (25), the electrical component (26), and the connecting device (27) are all installed on the surface of the aluminum-based heating plate body (24).

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