A liquid instant heating component

Abstract

The present invention relates to the technical field of liquid heating, in particular to an instant liquid heating component, which includes a plurality of electric heating tubes arranged side by side, and also includes two pipes, a water inlet part, and a water outlet part. The two pipes are located at both ends of the electric heating tubes. The two pipes include a first pipe and a second pipe. The plurality of electric heating tubes are installed between the first pipe and the second pipe. Liquid forms a liquid heating path from the water inlet part to the water outlet part through the first pipe, the second pipe, and the electric heating tubes. A second sealing part is provided at the pipe end of the water inlet part or the water outlet part. The second sealing part includes a second plug and a blocking member for preventing the second plug from being ejected. The part of the second plug extending into the pipe forms a flowing water cavity with the inner wall of the pipe, and the flowing water cavity communicates with the water inlet part or the water outlet part. The device has a simple structure, is convenient for assembly, reduces manufacturing costs, has good pressure resistance against water flow impact, and has a higher service life of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of liquid heating, and in particular to an instant liquid heating component. Background Art

[0002] Rapid liquid heating is increasingly used. In general liquid instant heating equipment, when water flows, impact force will be generated. The greater the water pressure, the greater the impact force. If the water pressure impact force is not reduced, the service life of the pipeline and electric heating tube will be reduced. Summary of the invention

[0003] The purpose of the present invention is to solve the disadvantage of the prior art that it is not resistant to water pressure and to propose a liquid instant heating component.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A liquid instant heating component, comprising a plurality of electric heating tubes arranged side by side, and also comprising two pipes, a water inlet, and a water outlet, wherein the two pipes are located at both ends of the electric heating tube, the two pipes comprise a first pipe and a second pipe, and the plurality of electric heating tubes are installed between the first pipe and the second pipe, and the liquid passes from the water inlet to the water outlet through the first pipe, the second pipe, and the electric heating tube to form a liquid heating passage;

[0006] A second plugging part is provided at the end of the pipe where the water inlet or water outlet is set. The second plugging part includes a second plug and a blocking member for blocking the second plug from rushing out. The part of the second plug extending into the pipe forms a water flow cavity with the inner wall of the pipe, and the water flow cavity is connected to the water inlet or water outlet.

[0007] The end of the pipe without the water inlet or the water outlet is provided with a first blocking portion, wherein the first blocking portion includes a first plug for preventing water leakage and a blocking member for blocking the first plug from rushing out;

[0008] The first pipe and the second pipe are both provided with a barrier portion, so that the liquid in the electric heating pipe adjacent to the barrier portion flows in the opposite direction, and the liquid forms an "S"-shaped liquid heating passage from the water inlet to the water outlet through the first pipe, the second pipe, and the electric heating pipe.

[0009] The water inlet part or the water outlet part includes a water inlet hole and a water outlet hole arranged radially along its pipeline. The second plug includes a first cylindrical section. The pipeline includes a third stepped part. The outer diameter of the first cylindrical section is adapted to the inner diameter of the third stepped part, and the outer diameter of the first cylindrical section is smaller than the outer diameter of the third stepped part. The flowing water cavity is located between the outer wall of the first cylindrical section and the wall of the third stepped part. The water inlet hole and the water outlet hole penetrate through the wall of the third stepped part. The second plug includes a second cylindrical section, and the second cylindrical section is integrally formed with the first cylindrical section. The outer diameter of the first cylindrical section is smaller than the outer diameter of the second cylindrical section. An annular installation groove is formed at the end of the first cylindrical section, and a second sealing ring is installed in the installation groove. The end of the second cylindrical section is integrally formed with a first outer edge extending towards its outer circumference. A third sealing ring is sleeved on the second cylindrical section. A fourth stepped part is formed at the end of the pipeline. The fourth stepped part is located adjacent to the end of the pipeline relative to the third stepped part. The second sealing ring is sealed between the outer wall of the first cylindrical section and the inner wall of the pipeline formed by the third stepped part. The outer diameter of the second cylindrical section matches the inner diameter of the fourth stepped part. The third sealing ring is pressed between the fourth stepped part and the first outer edge. The part of the first cylindrical section located between the third stepped part and the second cylindrical section forms a flowing water cavity with the inner wall of the pipeline.

[0010] A second stepped part is formed on the inner wall of the end of the pipeline. The first plug includes a third cylindrical section. One end of the third cylindrical section extends outwards towards its outer circumference with a second outer edge. A first sealing ring is sleeved on the third cylindrical section. The third cylindrical section and the second outer edge are both inserted into the pipeline, and the first sealing ring is pressed between the second outer edge and the second stepped part. The blocking part abuts against one end of the second outer edge away from the third cylindrical section.

[0011] The blocking part includes an insertion plate. Insertion holes are formed on both the upper and lower sides of the end of the pipeline. The insertion plate penetrates through the upper and lower insertion holes along the radial direction of the pipeline and supports at the end of the first plug or the second plug. The insertion plate includes an insertion piece part. Limiting arms are integrally formed on both sides of the top of the insertion piece part. The insertion piece part penetrates through the upper and lower insertion holes, and the limiting arms support on the pipeline.

[0012] The limiting arm is an arc-shaped strip. The inner circle diameter of the arc-shaped strip is equal to the outer diameter of the pipeline. An inverted buckle is integrally formed at the bottom end of the insertion piece part. The top end of the insertion piece part is limited by the limiting arm, and the bottom end is limited by the inverted buckle.

[0013] The liquid heating path includes a plurality of interconnected heating units. Each heating unit includes at least two electric heating tubes. Each heating unit has electric heating tubes with opposite liquid flow directions. Between the cold water inlet and the hot water outlet between adjacent electric heating tubes with opposite liquid flow directions in each heating unit, there is a blocking part. Two adjacent heating units are defined as the first heating unit and the second heating unit, and the liquid first passes through the first heating unit and then through the second heating unit. The water outlet of the first heating unit is connected to the water inlet of the second heating unit through the first pipe or the second pipe. One ends of two adjacent electric heating tubes of the first heating unit and the second heating unit are connected through the first pipe or the second pipe, and the other ends of two adjacent electric heating tubes of the first heating unit and the second heating unit are separated by the blocking part.

[0014] A plurality of mounting seats for mounting electric heating tubes are integrally formed on the first pipe and the second pipe. A first stepped portion is provided on the mounting seat. Sealing sleeves are sleeved at both ends of the electric heating tube. The sealing sleeve includes a cylindrical portion. One end of the cylindrical portion is integrally formed with an inner edge extending towards its axis. The electric heating tube is inserted into the cylindrical portion and abuts against the inner edge. The sealing sleeve is inserted into the mounting seat and abuts against the first stepped portion.

[0015] The blocking part is in the form of a partition plate, and the blocking part is integrally formed on the inner wall of the first pipe or the second pipe, or the blocking part is fixedly arranged with the first pipe or the second pipe.

[0016] A part of the second blocking portion is the blocking part; A plurality of strengthening brackets are installed between the first pipe and the second pipe. The strengthening bracket includes a support rod. A plurality of fixing seats are integrally formed on both the first pipe and the second pipe. A through hole is provided on the fixing seat. Both ends of the support rod penetrate through the through holes on the first pipe and the second pipe, and the penetrated ends are locked by nuts.

[0017] A liquid instant heating component proposed by the present invention has the beneficial effects that: The device has a simple structure, is convenient for assembly, reduces the manufacturing cost, has good pressure resistance to water flow impact, and has a higher service life of the device. The device can be applied in places such as showers, kitchens, and bathrooms. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the water flow direction structure of an embodiment of the liquid instant heating component of the present invention, where the heating unit is a double-tube type;

[0019] Figure 2 It is a schematic diagram of the water flow direction structure of another embodiment of the liquid instant heating component of the present invention, where the heating unit is a triple-tube type;

[0020] Figure 3Schematic structural diagram of another implementation of the liquid instant heating component of the present invention, where the heating unit is a double-tube type;

[0021] Figure 4 Schematic diagram of the first pipeline structure of the present invention Figure 1 ;

[0022] Figure 5 Schematic diagram of the first pipeline structure of the present invention Figure 2 ;

[0023] Figure 6 Schematic semi-sectional view of the first pipeline structure of the present invention;

[0024] Figure 7 Schematic diagram of the first plug structure of the present invention;

[0025] Figure 8 Schematic semi-sectional three-dimensional view of the double-tube heating unit of the present invention;

[0026] Figure 9 Schematic diagram of the second pipeline structure of the present invention Figure 1 ;

[0027] Figure 10 Schematic diagram of the second pipeline structure of the present invention Figure 2 ;

[0028] Figure 11 Schematic diagram of the second plug structure of the present invention;

[0029] Figure 12 Schematic semi-sectional view of the second pipeline structure of the present invention;

[0030] Figure 13 Schematic front view of the semi-section of the double-tube heating unit of the present invention;

[0031] Figure 14 is Figure 13 Schematic enlarged view of part A;

[0032] Figure 15 Schematic diagram of the plug board structure of the present invention;

[0033] Figure 16 Schematic diagram of the sealing sleeve structure of the present invention.

[0034] In the figure: first pipe 1, mounting seat 2, fixing seat 3, insertion plate 4, support rod 5, electric heating pipe 6, water inlet part 7, second pipe 8, water outlet part 9, first plug 10, blocking part 11, sealing sleeve 12, first sealing part 13, second sealing part 14, water flow cavity 15, mounting groove 16, first cylindrical section 17, second cylindrical section 18, first outer edge 19, second outer edge 20, third cylindrical section 21, second plug 22, insertion piece part 23, limiting arm 24, inner edge 25, cylindrical part 26, nut mounting groove 27, jack 28, through hole 29, first step part 30, second step part 31, third step part 32, fourth step part 33, water inlet hole 34, water outlet hole 35. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] Refer to Figure 1-16 , a liquid instant heating component, including a plurality of electric heating pipes 6 arranged side by side, and also including two pipes, a water inlet part 7, and a water outlet part 9. The two pipes are located at both ends of the electric heating pipes. The two pipes include a first pipe 1 and a second pipe 8. A plurality of electric heating pipes 6 are installed between the first pipe 1 and the second pipe 8. Liquid forms a liquid heating path from the water inlet part 7 to the water outlet part 9 through the first pipe 1, the second pipe 8, and the electric heating pipe 6. The water inlet part 7 and the water outlet part 9 are both arranged on the first pipe 1 or the second pipe 8 at the same time; or one of the water inlet part 7 and the water outlet part 9 is arranged on the first pipe 1, and the other of the water inlet part 7 and the water outlet part 9 is arranged on the second pipe 8. In order to further improve the connection strength between the pipe and the electric heating pipe during installation, a plurality of strengthening brackets are installed between the first pipe 1 and the second pipe 8. The strengthening brackets include support rods 5. A plurality of fixing seats 3 are integrally formed on both the first pipe 1 and the second pipe 8. A through hole 29 is opened on the fixing seat 3. Both ends of the support rod 5 pass through the through holes 29 on the first pipe 1 and the second pipe 8, and the two ends passing through are locked by nuts. A nut mounting groove 27 matching the shape and size of the nut is opened on the fixing seat 3 at one end of the support rod 5. The nut is placed in the nut mounting groove 27. Both ends of the support rod 5 are set as threaded sections. One end places the nut in the nut mounting groove 27, directly passes the support rod 5 through the through hole 29 and connects it to the nut in the mounting groove 27, and the other end uses a wrench to connect and lock the nut and the support rod 5 to improve the assembly efficiency.

[0037] In this article, the pipe is not limited to a tubular structure, and can also include other irregular structures with a similar pipe structure. Any structure that functions as a pipe in this article can be regarded as synonymous with the "pipe" described in this article.

[0038] The pipe end of the water inlet part 7 or the water outlet part 9 is provided with a second sealing part 14. The second sealing part 14 includes a second plug 22 and a blocking part for preventing the second plug 22 from being washed out. The part of the second plug 22 extending into the pipe forms a flowing water cavity 15 with the inner wall of the pipe, and the flowing water cavity communicates with the water inlet part or the water outlet part.

[0039] The pipe end without the water inlet part 7 or the water outlet part 9 is provided with a first sealing part 13. The first sealing part 13 includes a first plug 10 for preventing water leakage and a blocking part for preventing the first plug 10 from being washed out. The water inlet part 7 and the water outlet part 9 are arranged on different or the same pipes according to requirements.

[0040] To facilitate the connection between the instant heating component and external equipment, interface parts for connecting with external equipment are provided on both the water inlet part 7 and the water outlet part 9. The interface part is of a cylindrical structure, and threads or buckles are provided on the inner wall or the outer wall of the cylindrical structure. The electric heating tube 6 is perpendicular to the first pipe 1 and the second pipe 8.

[0041] Blocking parts 11 are provided inside both the first pipe 1 and the second pipe 8, so that the liquid flow directions in the electric heating tubes adjacent to the blocking parts are opposite, and the liquid forms an "S"-shaped liquid heating path from the water inlet part 7 to the water outlet part 9 through the first pipe 1, the second pipe 8, and the electric heating tube 6.

[0042] As an implementation method, referring to Figure 1-2 , in this device, multiple electric heating tubes 6 are installed between the parallel first pipe 1 and the second pipe 8. By setting the blocking parts 11 on the inner walls of the first pipe 1 and the second pipe 8, an "S"-shaped liquid heating path is formed by the first pipe 1, the second pipe 8, and the electric heating tube 6, and the positional relationship among the first pipe 1, the second pipe 8, and the electric heating tube 6 is fixed by a strengthening bracket. This device is assembled more simply. Compared with the traditional connection method of electric heating tubes, this device can withstand greater water pressure, can adapt to a more severe working environment, and has a wider application range.

[0043] It should be noted that in the Figure 2 shown implementation method, the part of the second pipe 8 communicating with the water inlet part 7 is connected to two electric heating tubes 6. Although, for the flow directions of all the electric heating tubes 6, there may be some differences from the "S", in this article, this implementation method or its similar situations and two or more electric heating tubes in the same second pipe or first pipe are regarded as one to form an "S".

[0044] Referring to Figure 3-14, a second sealing portion 14 is provided at the pipe end of the water inlet portion 7 or the water outlet portion 9. The setting method of the second sealing portion 14 on the first pipe 1 or the second pipe 8 is the same. The following description is based on the setting method in which both the water inlet portion 7 and the water outlet portion 9 are provided on the second pipe 8. The water inlet portion or the water outlet portion includes a water inlet hole 34 and a water outlet hole 35 arranged along the radial direction of its pipe. The second plug 22 includes a first cylindrical section 17. The second pipe 8 includes a third stepped portion 32. The outer diameter of the first cylindrical section 17 is adapted to the inner diameter of the third stepped portion. The outer diameter of the first cylindrical section 17 is smaller than the outer diameter of the third stepped portion. The water flow cavity is located between the outer wall of the first cylindrical section 17 and the wall of the third stepped portion. The water inlet hole 34 and the water outlet hole 35 penetrate through the wall of the third stepped portion. The second plug 22 includes a second cylindrical section 18. The second cylindrical section 18 is integrally formed with the first cylindrical section 17. The outer diameter of the first cylindrical section 17 is smaller than the outer diameter of the second cylindrical section 18. An annular installation groove 16 is formed at the end of the first cylindrical section 17. A second sealing ring is installed in the installation groove 16. A first outer edge 19 extending towards its outer circumference is integrally formed at the end of the second cylindrical section 18. A third sealing ring is sleeved on the second cylindrical section 18. A fourth stepped portion 33 is formed at the end of the second pipe 8. The fourth stepped portion 33 is located adjacent to the end of the second pipe 8 relative to the third stepped portion 32. The second sealing ring seals between the outer wall of the first cylindrical section 17 and the inner wall of the pipe formed by the third stepped portion 32. The outer diameter of the second cylindrical section 18 matches the inner diameter of the fourth stepped portion 33. The third sealing ring is pressed between the fourth stepped portion 33 and the first outer edge 19. The part of the first cylindrical section 17 located between the third stepped portion 32 and the second cylindrical section 18 forms a water flow cavity 15 with the inner wall of the second pipe 8.

[0045] The overall structure has good guiding properties, reduces the assembly difficulty of components, and is easy to form. Under the action of the second sealing ring, it prevents the water flow inside the second pipe 8 from leaking into the water flow cavity 15. Under the action of the third sealing ring, it prevents the liquid inside the water flow cavity 15 from flowing out, ensuring that there are only two water flow parts, namely the water inlet hole 34 and the water outlet hole 35, in the water flow cavity 15.

[0046] Reference Figure 14 , the water inlet hole and the water outlet hole are arranged along the radial direction of the second pipe 8. A second plug 22 is inserted inside the second pipe 8. Part of the second plug 22 is placed between the water inlet hole and the water outlet hole. When the water flow flows from the water inlet hole to the water outlet hole, the water flow first impacts on the second plug 22, and the water flow impact force is reduced by the second plug 22. The reduced water flow is dispersed in the water flow cavity 15 and then flows out through the water outlet hole. The water flow impact force is effectively reduced through a simple structure, improving the pressure resistance of the pipe and other components connected to the pipe.

[0047] The pipe end of the water inlet part 7 or the water outlet part 9 not provided is provided with a first plugging part 13. The setting mode of the first plugging part 13 on the first pipe 1 or the second pipe 8 is the same. The following description is carried out in the setting mode where the first plugging part 13 is arranged on the first pipe. A second step part 31 is provided on the inner wall of the end of the first pipe 1. The first plug 10 includes a third cylindrical section 21. One end of the third cylindrical section 21 extends outwards in the circumferential direction to form a second outer edge 20. A first sealing ring is sleeved on the third cylindrical section 21. The third cylindrical section 21 and the second outer edge 20 are both inserted into the first pipe 1, and the first sealing ring is pressed between the second outer edge 20 and the second step part 31. The blocking part abuts against one end of the second outer edge 20 away from the third cylindrical section 21.

[0048] The first plug 10 adopts a stepped structure. By using the structure of the second step part 31 on the inner wall of the first pipe 1 and the structure of the second outer edge 20, the sealing ring is pressed tightly, playing a better sealing role. At the same time, the end of the first plug 10 adopts the structure of the third cylindrical section 21. The third cylindrical section 21 is inserted into the small inner diameter water flow path formed by the second step part 31, which can play a better guiding role and facilitate the installation of the first plug 10.

[0049] The blocking parts used in the first plugging part 13 and the second plugging part 14 have the same structure. The blocking part includes an insertion plate 4. Insertion holes 28 are provided on both the upper and lower sides of the pipe end. The insertion plate 4 penetrates through the upper and lower two insertion holes 28 along the radial direction of the pipe and supports at the end of the first plug or the second plug; the insertion plate 4 includes an insertion piece part 23. Two limiting arms 24 are integrally formed on both sides of the top of the insertion piece part 23. The insertion piece part 23 penetrates through the upper and lower two insertion holes 28, and the limiting arms 24 support on the pipe; the limiting arms 24 are arc-shaped strips, the inner circle diameter of the arc-shaped strips is equal to the outer diameter of the pipe, an inverted buckle is integrally formed at the bottom end of the insertion piece part 23, and the top end of the insertion piece part 23 is limited by the limiting arms 24 and the bottom end is limited by the inverted buckle. The structure of the insertion plate 4 is simple, the installation is convenient, the connection is stable and firm. At the same time, the first plug 10 or the second plug 22 is limited by this structure, reducing the overall manufacturing difficulty and manufacturing cost.

[0050] In another embodiment, the blocking part includes a bolt part. An internal thread is provided on the inner wall of the end of the second pipe 8. The bolt part is threadedly connected to the second pipe 8 and abuts against the outer end of the second plug 22.

[0051] In another embodiment, the blocking part includes a threaded cylinder. A push rod is integrally formed at the axis of the threaded cylinder. An external thread is provided on the outer wall of the end of the second pipe 8. The threaded cylinder is threadedly connected to the second pipe 8 and the push rod abuts against the outer end of the second plug 22.

[0052] Reference Figure 1-2, the blocking part is in the form of a partition, and the blocking part 11 is integrally formed on the inner wall of the first pipe 1 or the second pipe 8, or the blocking part is fixedly arranged with the first pipe 1 or the second pipe 8. The liquid heating path includes a number of connected heating units, and each heating unit includes at least two electric heating tubes 6. Each heating unit has electric heating tubes with opposite liquid flow directions. Between the adjacent electric heating tubes 6 with opposite liquid flow directions in each heating unit, a blocking part 11 is provided between the cold water inlet and the hot water outlet. Here, the cold water inlet and the hot water outlet refer to: the same end of the adjacent front and rear electric heating tubes with opposite water flow directions. The water inlet direction with a lower water temperature is the cold water inlet, and the water outlet direction with a higher water temperature is the hot water outlet. The path of the colder water and the hotter water after heating is blocked by the blocking part 11. Two adjacent heating units are defined as the first heating unit and the second heating unit, and the liquid first passes through the first heating unit and then through the second heating unit. The outlet of the first heating unit is connected to the inlet of the second heating unit through the first pipe 1 or the second pipe 8. One ends of the two adjacent electric heating tubes 6 of the first heating unit and the second heating unit are connected through the first pipe 1 or the second pipe 8, and the other ends of the two adjacent electric heating tubes 6 of the first heating unit and the second heating unit are blocked by the blocking part 11.

[0053] In another embodiment, referring to Figure 8 , preferably, there are four electric heating tubes 6, and the electric heating tubes are preferably nano-film electric heating tubes. A part of the second blocking part is the blocking part. At this time, a blocking part 11 is formed between the second sealing ring and the first cylindrical section 17 and the inner wall of the second pipe. The flowing water cavity 15 is separated from the liquid at the end of the first cylindrical section 17 through this blocking part.

[0054] Referring to Figure 8 , a number of mounting seats 2 for mounting the electric heating tubes 6 are integrally formed on the first pipe 1 and the second pipe 8. A first step portion 30 is provided on the mounting seat 2. Sealing sleeves 12 are sleeved at both ends of the electric heating tube 6. The sealing sleeve 12 includes a cylindrical portion 26. One end of the cylindrical portion 26 is integrally formed with an inner edge 25 extending towards its axis. The electric heating tube 6 is inserted into the cylindrical portion 26 and abuts against the inner edge 25. The sealing sleeve 12 is inserted into the mounting seat 2 and abuts against the first step portion 30. This structure makes it more convenient to install the electric heating tube 6, the connection is more stable, and the sealing performance is better.

[0055] When this instant heating component works, referring to Figure 8 , the liquid flows into the second pipe 8 from the water inlet part 7. The liquid impacts on the second plug 22 of the water inlet part 7, playing a role of buffering the water flow impact. Then it enters the electric heating tube 6 through the flowing water cavity 15. The water flow is heated by multiple electric heating tubes 6 in an S-shaped flow mode. The heated liquid impacts on the second plug 22 of the water outlet part 9, and then flows out from the water outlet part 9, completing the heating of the liquid. This device can be applied in places such as showers, kitchens, and bathrooms.

[0056] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, the technical solutions, concepts, and designs obtained by equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. A liquid instant heating component, comprising a plurality of electric heating tubes (6) arranged side by side, characterized in that, it further comprises two pipes, a water inlet part (7), and a water outlet part (9). The two pipes are located at both ends of the electric heating tubes. The two pipes include a first pipe (1) and a second pipe (8). A plurality of the electric heating tubes (6) are installed between the first pipe (1) and the second pipe (8). Liquid forms a liquid heating path from the water inlet part (7) to the water outlet part (9) through the first pipe (1), the second pipe (8), and the electric heating tubes (6); at the pipe end of the water inlet part (7) or the water outlet part (9), a second blocking part (14) is provided. The second blocking part (14) includes a second plug (22) and a blocking member for preventing the second plug (22) from being ejected. The part of the second plug (22) extending into the pipe forms a flowing water cavity (15) with the inner wall of the pipe, and the flowing water cavity communicates with the water inlet part or the water outlet part; at the pipe end where the water inlet part (7) or the water outlet part (9) is not provided, a first blocking part (13) is provided. The first blocking part (13) includes a first plug (10) for preventing water leakage and a blocking member for preventing the first plug (10) from being ejected; barrier parts (11) are provided inside both the first pipe (1) and the second pipe (8), such that the liquid flow directions in the electric heating tubes adjacent to the barrier parts are opposite, and the liquid forms a liquid heating path with an "S" - shaped flow mode from the water inlet part (7) to the water outlet part (9) through the first pipe (1), the second pipe (8), and the electric heating tubes (6); The water inlet part or the water outlet part includes a water inlet hole (34) and a water outlet hole (35) arranged radially along its pipeline. The second plug (22) includes a first cylindrical section (17). The pipeline includes a third step portion (32). The outer diameter of the first cylindrical section (17) is adapted to the inner diameter of the third step portion. The outer diameter of the first cylindrical section (17) is smaller than the outer diameter of the third step portion. The flowing water cavity is located between the outer wall of the first cylindrical section (17) and the wall of the third step portion. The water inlet hole (34) and the water outlet hole (35) penetrate through the wall of the third step portion. The second plug (22) includes a second cylindrical section (18). The second cylindrical section (18) is integrally formed with the first cylindrical section (17). The outer diameter of the first cylindrical section (17) is smaller than the outer diameter of the second cylindrical section (18). An annular installation groove (16) is formed at the end of the first cylindrical section (17). A second sealing ring is installed in the installation groove (16). A first outer edge (19) extending towards its outer circumference is integrally formed at the end of the second cylindrical section (18). A third sealing ring is sleeved on the second cylindrical section (18). A fourth step portion (33) is formed at the end of the pipeline. The fourth step portion (33) is located adjacent to the end of the pipeline relative to the third step portion (32). The second sealing ring seals between the outer wall of the first cylindrical section (17) and the inner wall of the pipeline formed by the third step portion (32). The outer diameter of the second cylindrical section (18) matches the inner diameter of the fourth step portion (33). The third sealing ring is pressed between the fourth step portion (33) and the first outer edge (19). The part of the first cylindrical section (17) located between the third step portion (32) and the second cylindrical section (18) forms a flowing water cavity (15) with the inner wall of the pipeline; A second step portion (31) is formed on the inner wall at the end of the pipeline. The first plug (10) includes a third cylindrical section (21). A second outer edge (20) extends outwards from one end of the third cylindrical section (21) towards its outer circumference. A first sealing ring is sleeved on the third cylindrical section (21). The third cylindrical section (21) and the second outer edge (20) are both inserted into the pipeline. And the first sealing ring is pressed between the second outer edge (20) and the second step portion (31). The blocking member abuts against one end of the second outer edge (20) away from the third cylindrical section (21).

2. A liquid instant heating component according to claim 1, wherein, the blocking member includes an insertion plate (4). Insertion holes (28) are formed on both the upper and lower sides of the end of the pipeline. The insertion plate (4) penetrates through the upper and lower two insertion holes (28) along the radial direction of the pipeline and supports at the end of the first plug or the second plug; the insertion plate (4) includes an insertion piece portion (23). Two limiting arms (24) are integrally formed on both sides of the top of the insertion piece portion (23). The insertion piece portion (23) penetrates through the upper and lower two insertion holes (28). The limiting arms (24) support on the pipeline.

3. A liquid instant heating component according to claim 2, wherein, The limiting arm (24) is an arc-shaped strip, the inner circle diameter of the arc-shaped strip is equal to the outer diameter of the pipeline, an inverted buckle is integrally formed at the bottom end of the inserting piece part (23), and the top end of the inserting piece part (23) is limited by the limiting arm (24) and the bottom end is limited by the inverted buckle.

4. A liquid instant heating assembly according to claim 1, wherein, the liquid heating passage includes a plurality of interconnected heating units, each heating unit includes at least two electric heating tubes (6), each heating unit has electric heating tubes with opposite liquid flow directions, and a blocking part (11) is provided between the cold water inlet and the hot water outlet between the adjacent electric heating tubes (6) with opposite liquid flow directions in each heating unit. Two adjacent heating units are defined as the first heating unit and the second heating unit, and the liquid first passes through the first heating unit and then through the second heating unit. The water outlet of the first heating unit is connected to the water inlet of the second heating unit through the first pipeline (1) or the second pipeline (8). One ends of two adjacent electric heating tubes (6) of the first heating unit and the second heating unit are connected through the first pipeline (1) or the second pipeline (8), and the other ends of two adjacent electric heating tubes (6) of the first heating unit and the second heating unit are separated by the blocking part (11).

5. A liquid instant heating assembly according to claim 4, wherein, a plurality of mounting seats (2) for mounting the electric heating tubes (6) are integrally formed on the first pipeline (1) and the second pipeline (8). A first stepped part (30) is formed on the mounting seat (2). Sealing sleeves (12) are sleeved at both ends of the electric heating tube (6). The sealing sleeve (12) includes a cylindrical part (26). An inner edge (25) extending towards its axis is integrally formed at one end of the cylindrical part (26). The electric heating tube (6) is inserted into the cylindrical part (26) and abuts against the inner edge (25). The sealing sleeve (12) is inserted into the mounting seat (2) and abuts against the first stepped part (30).

6. A liquid instant heating assembly according to claim 1, wherein, the blocking part is in the form of a partition plate, the blocking part (11) is integrally formed on the inner wall of the first pipeline (1) or the second pipeline (8) or the blocking part is fixedly arranged with the first pipeline (1) or the second pipeline (8).

7. A liquid instant heating assembly according to claim 1, wherein, a part of the second blocking part is the blocking part; a plurality of strengthening brackets are installed between the first pipeline and the second pipeline. The strengthening bracket includes a support rod. A plurality of fixing seats are integrally formed on both the first pipeline and the second pipeline. A through hole is formed on the fixing seat. Both ends of the support rod penetrate through the through holes on the first pipeline and the second pipeline, and both ends of the penetration are locked by nuts.

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