Multi-pipeline heating device

Abstract

The utility model relates to the technical field of liquid electric heating equipment, and discloses a multi-pipeline heating device which is characterized in that a first chamber N1 is communicated with a second chamber M1 through a first group of heating pipes, the second chamber M1 is communicated with a first chamber N2 through a second group of heating pipes, and the first chamber N2 is communicated with a second chamber M2 through a third group of heating pipes. The second chamber M (j-1) is communicated with the first chamber Ni at the tail end through the (2N-2) th group of heating pipes, the first chamber Ni is further communicated with the second chamber Mj through the (2N-1) th group of heating pipes, the first chamber, the first group of heating pipes and the second chamber form a heating channel, heated liquid is heated through the heating channels in sequence, and the second chamber M (j-1) is communicated with the second chamber Mj through the (2N-1) th group of heating pipes. And the liquid flows in the different groups of heating pipes in sequence in a one-way manner, so that the to-be-heated liquid is separated and heated through the plurality of heating pipes, and the liquid can be uniformly heated.

Description

Technical Field

[0001] This utility model relates to the field of liquid electric heating equipment technology, and in particular to a multi-pipe heating device. Background Technology

[0002] In the industrial field, common fluid heating methods include water storage and rapid heating. Water storage involves placing a heating device inside a large water tank to heat water. When hot water is needed, the heated water in the tank is released. This design makes it inconvenient to use the heated liquid immediately. Rapid heating, on the other hand, involves placing the liquid to be heated in a container, such as a pipe, and then placing the pipe with the liquid in a heated environment, such as a heating device. The heating device heats the pipe, thereby increasing the liquid temperature. This design allows for heating and use as needed, offering strong adaptability. However, this type of pipe liquid heating also has drawbacks. For example, precise temperature control may be difficult when heating liquid in long pipes because the flow rate and temperature distribution of the liquid in the pipe may be uneven. Secondly, pipe heating may lead to heat loss, especially when the pipe insulation is poor, as heat may dissipate into the surrounding environment. Therefore, improvements are needed. Utility Model Content

[0003] The main purpose of this invention is to provide a multi-pipe heating device, which aims to solve the technical problem of uneven liquid heating.

[0004] To achieve the above objectives, this utility model provides a multi-pipe heating device, which includes:

[0005] Several heating elements;

[0006] The two trays are a liquid inlet tray and a liquid outlet tray. The liquid inlet tray is internally divided into a series of chambers N1, N2, ..., N1. i The liquid outlet plate box is internally divided into consecutive second chambers M1, M2, ..., M1. j The number of the first chamber and the number of the second chamber are equal, and i and j are natural numbers greater than 2;

[0007] The heating tube is disposed between the liquid inlet plate box and the liquid outlet plate box, and the interior of the heating tube is connected to the interior of both the liquid inlet plate box and the liquid outlet plate box;

[0008] The plurality of heating tubes are divided into (2N-1) groups, where N is the number of first chambers or second chambers. The first chamber N1 is connected to the second chamber M1 through the first group of heating tubes, the second chamber M1 is connected to the first chamber N2 through the second group of heating tubes, the first chamber N2 is then connected to the second chamber M2 through the third group of heating tubes, and so on. The first chamber N1 is located in the middle. i The (2i-2)th set of heating pipes for liquid inlet is connected to the second chamber M. (i-1) The first chamber N, located in the middle i The (2i-1)th group of heating pipes used for liquid discharge is connected to the second chamber M. i Finally, the second chamber M (j-1) The first chamber N at the end is connected via the heating tubes of group (2j-4). j First chamber N j It is also connected to the second end chamber M via the (2j-1)th group of heating pipes. j The first chamber, the first set of heating tubes, and the second chamber constitute a heating channel, through which the liquid to be heated is sequentially heated.

[0009] Preferably, the values ​​of i and j are both 2, such that the interior of the liquid inlet plate box is divided into two non-communicating first chambers by a first flow-blocking element, the two first chambers being first chamber N1 and first chamber N2. The interior of the liquid outlet plate box is divided into two non-communicating second chambers by a second flow-blocking element, the two second chambers being second chamber M1 and second chamber M2. The liquid inlet plate box is provided with a liquid inlet communicating with the first chamber N1, and the liquid outlet plate box is provided with a liquid outlet communicating with the second chamber M2. External liquid enters the first chamber N1 through the liquid inlet, and flows out from the liquid outlet to the next structure after passing through three consecutive heating channels.

[0010] Preferably, the first flow obstruction includes a first baffle block with a stepped cross-section, which divides the cavity of the first chamber N1 into a “7” shaped chamber, and the volume of the first chamber N2 is larger than the volume of the first chamber N1.

[0011] The second flow obstruction includes a second baffle block with a rectangular cross-section, which divides the cavities of the second chamber M1 and the second chamber M2 into cuboid cavities. The volume of the second chamber M1 is larger than the volume of the second chamber M2.

[0012] The first chamber N1 and a portion of the second chamber M1 are arranged opposite each other, and the first chamber N2 and another portion of the second chambers M2 and M1 are arranged opposite each other.

[0013] Preferably, the values ​​of i and j are both 3, such that the interior of the liquid inlet plate box is divided into three non-communicating first chambers by the first flow obstruction element, the three first chambers being first chamber N1, first chamber N2 and first chamber N3, and the interior of the liquid outlet plate box is divided into three non-communicating second chambers by the second flow obstruction element, the three second chambers being second chamber M1, second chamber M2 and second chamber M3;

[0014] The liquid inlet plate box is provided with a liquid inlet communicating with the first chamber N1, and the liquid outlet plate box is provided with a liquid outlet communicating with the second chamber M3; external liquid enters the first chamber N1 through the liquid inlet, and flows out from the liquid outlet to the next structure after passing through seven consecutive heating channels.

[0015] Preferably, the inlet plate box, the outlet plate box, the first flow-blocking component, and the second flow-blocking component are all made of plastic material.

[0016] Preferably, the multi-pipe heating device further includes a wiring board and a U-shaped cover plate. The wiring board and the U-shaped cover plate are connected by a first fastening screw to form a U-shaped cover. The two open ends of the U-shaped cover are respectively connected to the liquid inlet plate box and the liquid outlet plate box to form a heating box. The heating box encloses several heating pipes inside.

[0017] Preferably, the wiring board is provided with a wiring module; a heating film is provided on the outside of each of the several heating tubes, and silver electrodes electrically connected to the heating film are provided at both ends of each heating tube, and the silver electrodes are electrically connected to the wiring module;

[0018] The heating element is a quartz tube.

[0019] Preferably, a temperature measuring element is provided near the liquid outlet of the liquid outlet box to measure the temperature of the liquid discharged from the liquid outlet.

[0020] Preferably, a plurality of fasteners are provided between the liquid inlet plate box and the liquid outlet plate box, and the plurality of fasteners are evenly distributed on the outside of the plurality of heating tubes.

[0021] Preferably, the fastener includes a fastening shaft, and the two ends of the fastening shaft are respectively connected to the inlet plate box and the outlet plate box by second fastening screws, wherein the second fastening screws are spirally displaced along the middle direction of the fastening shaft to stabilize the relative position of the inlet plate box and the outlet plate box.

[0022] In the technical solution provided by this utility model, the first chamber N1 is connected to the second chamber M1 through the first set of heating pipes, the second chamber M1 is connected to the first chamber N2 through the second set of heating pipes, the first chamber N2 is then connected to the second chamber M2 through the third set of heating pipes, and so on. The first chamber N1 is located in the middle. i The (2i-2)th set of heating pipes for liquid inlet is connected to the second chamber M. (i-1) The first chamber N, located in the middle i The (2i-1)th group of heating pipes used for liquid discharge is connected to the second chamber M. i Finally, the second chamber M (j-1) The first chamber N at the end is connected via the heating tubes of group (2j-4). j First chamber N j It is also connected to the second end chamber M via the (2j-1)th group of heating pipes. j The design incorporates a first chamber, a first set of heating tubes, and a second chamber forming a heating channel. The liquid to be heated passes through this channel sequentially. This design allows the liquid to flow unidirectionally through different sets of heating tubes, enabling the liquid to be heated evenly by multiple heating tubes. The continuous heating channel ensures that the heat lost during the flow is replenished, maintaining the liquid's heat and allowing for rapid heating to the preset temperature. Furthermore, if a heating tube malfunctions, such as leaking, the operator only needs to replace the corresponding heating tube to continue heating the liquid. Unlike existing technologies where the entire pipeline needs to be replaced when a problem occurs, this design significantly reduces pipeline costs and simplifies replacement operations. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is an exploded view of the present invention;

[0026] Figure 3 This is an exploded view of the present invention from another angle;

[0027] Figure 4 This is a schematic cross-sectional view of the liquid inlet plate box in this utility model;

[0028] Figure 5This is a schematic cross-sectional view of the liquid outlet plate box in this utility model;

[0029] Figure 6 This is a cross-sectional view of an embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of the liquid flow direction in another embodiment of the present invention.

[0031] The labels for the attached figures are as follows:

[0032] 100. First group of heating elements;

[0033] 1. Liquid inlet plate box; 11. First chamber N1; 111. Liquid inlet; 12. First chamber N2; 13. First flow obstruction element; 14. Third chamber N3;

[0034] 2. Liquid outlet plate box; 21. Second chamber M1; 22. Second chamber M2; 221. Liquid outlet; 222. Temperature measuring element; 23. Second flow obstruction element; 24. Second chamber M3;

[0035] 3. Terminal block; 31. U-shaped cover; 32. Wiring module;

[0036] 4. Fasteners;

[0037] 5. Liquid level tube. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0039] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections via an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] To achieve the above objectives, this utility model provides a multi-pipe heating device, please refer to... Figures 1-7 The multi-pipe heating device includes several heating pipes 1, two plate boxes, and other structural components that ensure the normal operation of the multi-pipe heating device, such as wires.

[0042] In this invention, the two plates are divided into an inlet plate box 1 and an outlet plate box 2. The inlet plate box 1 is internally divided into a series of first chambers N111, N212, ..., N111. i The liquid outlet plate box 2 is internally divided into a series of second chambers M121, M222, ..., M121. j The number of the first chamber and the second chamber are equal, and i and j are natural numbers greater than 2. This means that the number of the first chamber and the second chamber can be increased or decreased according to the application environment. The heating tube is set between the inlet plate box 1 and the outlet plate box 2. The inside of the heating tube is connected to both the inside of the inlet plate box 1 and the inside of the outlet plate box 2, so that the liquid is transferred between the inside of the inlet plate box 1 and the inside of the outlet plate box 2 through the heating tube, and the liquid is heated in the heating tube.

[0043] Several heating tubes are divided into (2N-1) groups, where N is the number of first or second chambers. The first chamber N111 is connected to the second chamber M121 via the first group of heating tubes 100. The second chamber M121 is connected to the first chamber N212 via the second group of heating tubes. The first chamber N212 is then connected to the second chamber M222 via the third group of heating tubes, and so on. The first chamber N111 is located in the middle. i The (2i-2)th set of heating pipes for liquid inlet is connected to the second chamber M. (i-1)The first chamber N, located in the middle i The (2i-1)th group of heating pipes used for liquid discharge is connected to the second chamber M. i Finally, the second chamber M (j-1) The first chamber N at the end is connected via the heating tubes of group (2j-4). j First chamber N j It is also connected to the second end chamber M via the (2j-1)th group of heating pipes. j The first chamber, the first set of heating tubes 100, and the second chamber constitute a heating channel, through which the liquid to be heated is sequentially heated.

[0044] It should be noted that the 'i' mentioned earlier refers to the i-th consecutive first chamber N. i and the second chamber M i j represents the j-th consecutive first chamber N. j and the second chamber M j .

[0045] The above design allows the liquid to flow unidirectionally through different groups of heating tubes, thus enabling the liquid to be heated evenly by distributing it through several heating tubes. The continuous heating channels ensure that the heat lost during the liquid flow is replenished, maintaining the liquid's heat and allowing it to be heated to the preset temperature quickly. Furthermore, if a heating tube malfunctions, such as by leaking, the operator only needs to replace the corresponding heating tube to continue heating the liquid. Unlike existing technologies where the entire pipeline needs to be replaced when a problem occurs, this design greatly saves on pipeline costs and simplifies replacement operations.

[0046] In this embodiment, both i and j are 2. Please refer to [reference needed]. Figures 2-5 The liquid inlet plate box 1 is divided into two non-communicating first chambers by the first flow-blocking element 13. The two first chambers are first chamber N111 and first chamber N212. The liquid outlet plate box 2 is divided into two non-communicating second chambers by the second flow-blocking element 23. The two second chambers are second chamber M121 and second chamber M222. The liquid inlet plate box 1 is provided with a liquid inlet 111 communicating with the first chamber N111, and the liquid outlet plate box 2 is provided with a liquid outlet 221 communicating with the second chamber M222.

[0047] Since both i and j are 2, there are three sets of heating tubes: a first set of heating tubes 100, a second set of heating tubes, and a third set of heating tubes. Specifically, the external liquid enters the first chamber N111 through the inlet 111, then flows through the first set of heating tubes 100 into the second chamber M121. The liquid in the second chamber M121 then flows through the second set of heating tubes into the first chamber N212, and finally flows through the third set of heating tubes into the second chamber M222. Clearly, the external liquid is heated by three consecutive heating tubes. The liquid flows out from outlet 221 into the next structure. This design allows the liquid to undergo a folded unidirectional heating loop, distributing the external liquid into individual heating tubes within a group of heating elements. This ensures uniform heating of the liquid as it flows through the heating tubes. Furthermore, this multi-channel heating system guarantees sufficient heat for the liquid, rapidly heating it to the preset temperature and significantly improving heating efficiency. Additionally, if a heating element malfunctions, only the corresponding element needs to be replaced, eliminating the need to replace other heating channels, thus saving on piping costs. Please refer to [reference needed] for details. Figure 6 M represents the flow path of the external liquid in this device, where the arrow indicates the flow direction.

[0048] Furthermore, regarding the first flow-blocking element 13, please refer to... Figure 2 and Figure 4 The first flow obstruction element 13 includes a first baffle block with a stepped cross-section, which divides the cavity of the first chamber N111 into a “7” shaped chamber. The volume of the first chamber N111 is larger than that of the first chamber N212. In this design, by setting the cavity shape of the first chamber N111 to a “7” shape, the liquid entering from the liquid inlet 111 can be directly divided into each heating tube in the first group of heating tubes 100 without stagnating in the first chamber N111. Secondly, it also ensures that the first chamber N212 can smoothly receive the liquid from the second chamber M121, and will not cause the liquid to stagnate during the heating process, thus affecting the liquid heating.

[0049] The second flow-blocking element 23 includes a second baffle block; please refer to [reference needed]. Figure 3 and Figure 5 The second partition block has a rectangular cross-section, which divides the cavities of the second chamber M121 and the second chamber M222 into cuboid chambers. The volume of the second chamber M121 is larger than that of the second chamber M222, so that the liquid received by the second chamber M121 can flow back into the first chamber N212.

[0050] To ensure smoother liquid flow, please refer to... Figure 6The first chamber N111 and a portion of the second chamber M121 are arranged opposite each other, so that the liquid in the first chamber N111 can only flow into the second chamber M121. The first chamber N212 and another portion of the second chamber M222 and the second chamber M121 are arranged opposite each other, so that the liquid in the second chamber M121 can only pass through the first chamber N212 of the second set of heating tubes, and then the liquid in the first chamber N212 flows out through the outlet 221 of the second chamber M222. The above design ensures that the liquid flow path of each set of heating tubes is smooth and the liquid flow rate is stable.

[0051] It should be noted that in this embodiment, each group of heating tubes includes three heating tubes. In fact, in other embodiments, the number of heating tubes in each group can be four, five, etc., and the specific number of heating tubes can be determined by the amount of liquid.

[0052] Furthermore, in this embodiment, the inlet plate box 1, the outlet plate box 2, the first flow-blocking component 13, and the second flow-blocking component 23 are all made of plastic material. This design ensures that the liquid will not react with the metal during the heating process, so as to avoid the generation of some impurities in the liquid and affect the purity of the liquid.

[0053] In another embodiment, please refer to Figure 7 Where N represents the external liquid flow path, the arrow is the direction of liquid flow, and the values ​​of i and j are both 3. That is, the inside of the liquid inlet plate box 1 is divided into three non-connected first chambers by the first flow obstruction 13. The three first chambers are first chamber N111, first chamber N212 and first chamber N314. The inside of the liquid outlet plate box 2 is divided into three non-connected second chambers by the second flow obstruction 23. The three second chambers are second chamber M121, second chamber M222 and second chamber M324.

[0054] The liquid inlet plate box 1 is provided with a liquid inlet (not shown) communicating with the first chamber N111, and the liquid outlet plate box 2 is provided with a liquid outlet (not shown) communicating with the second chamber M324; external liquid enters the first chamber N111 through the liquid inlet (not shown), and flows out from the liquid outlet (not shown) to the next structure after passing through five consecutive heating channels.

[0055] The operating principle of this embodiment is the same as that of the previous embodiment. The difference is that the external liquid passes through a longer folded one-way loop path in this embodiment, which further achieves the heating of the liquid.

[0056] In other embodiments, the values ​​of i and j can be 4, 5, etc., and the specific number of chambers can be adapted according to the application environment to ensure that the liquid can be heated uniformly.

[0057] For instructions on how to heat the heating element to ensure uniform heating of the liquid flowing through it, please refer to [reference needed]. Figure 1 and Figure 2 The multi-pipe heating device also includes a wiring board 3 and a U-shaped cover 31. The wiring board 3 and the U-shaped cover 31 are connected by a first fastening screw to form a U-shaped cover. The two open ends of the U-shaped cover are respectively connected to the liquid inlet plate box 1 and the liquid outlet plate box 2 to form a heating box. The heating box encloses several heating tubes inside. This design ensures that the heating tubes inside the heating box will not be damaged by external objects, thus ensuring the safety of the heating tubes. The heating box also ensures that the heat of the heating tubes is not easily lost to the outside, affecting the operation of other equipment. Secondly, it also plays a relative role in heat preservation for the heating tubes, realizing liquid heating.

[0058] The heating tube is a quartz tube, the wiring board 3 is equipped with a wiring module 32, and a heating film is provided on the outside of each heating tube. Silver electrodes that are electrically connected to the heating film are provided at both ends of the heating tube. The silver electrodes are electrically connected to the wiring module 32. When the external power is applied, the heating film will heat up due to the power, thereby heating the heating tube. In fact, this heating design belongs to the prior art, which should be known to those skilled in the art, and will not be described in detail here.

[0059] In this embodiment, please refer to Figure 6 A temperature measuring element 222 is provided near the liquid outlet 221 in the liquid outlet box 2 to measure the temperature of the liquid discharged from the liquid outlet 221. Specifically, the temperature measuring element 222 is a thermometer.

[0060] Furthermore, in this embodiment, a liquid level pipe 5 is provided between the first chamber N111 and the second chamber M121. The liquid level pipe 5 is connected to both the first chamber N111 and the second chamber M121 to display the amount of liquid inside the first heating tube 100, providing an indication to the operator whether liquid is flowing through the heating tube.

[0061] To ensure a more stable connection between each heating element and the inlet plate box 1 and outlet plate box 2, please refer to... Figure 4 and Figure 5A plurality of fasteners 4 are provided between the liquid inlet plate box 1 and the liquid outlet plate box 2, and the plurality of fasteners 4 are evenly distributed on the outside of a plurality of heating tubes. In this embodiment, the fastener 4 includes a fastening shaft, and the two ends of the fastening shaft are respectively connected to the liquid inlet plate box 1 and the liquid outlet plate box 2 by second fastening screws. The second fastening screws are spirally displaced along the middle direction of the fastening shaft, so that the liquid inlet plate box 1 and the liquid outlet plate box 2 respectively have forces on the ends of the fastening shaft that are opposite to them. That is, the liquid inlet plate box 1 and the liquid outlet plate box 2 squeeze the fastening shaft in the opposite direction. In fact, both the liquid inlet plate box 1 and the liquid outlet plate box 2 are provided with connecting screws. The spiral displacement direction of the connecting screws is opposite to the spiral displacement direction of the second screws, so as to achieve force balance between the liquid inlet plate box 1 or the liquid outlet plate box 2 and the fasteners 4, and ensure the stability of the connection between the liquid inlet plate box 1, the fasteners 4 and the liquid outlet plate box 2, so as to stabilize the relative position of the liquid inlet plate box 1 and the liquid outlet plate box 2 and realize the stable flow of liquid in each group of heating tubes.

[0062] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-pipe heating device, characterized in that, Multi-pipe heating devices include: Several heating elements; Two plate boxes, namely an inlet plate box (1) and an outlet plate box (2), wherein the inlet plate box (1) is internally divided into a continuous first chamber N1 (11), a first chamber N2 (12) ... a first chamber N i The liquid outlet plate box (2) is internally divided into a series of second chambers M1 (21), M2 (22) ... M1 (23) ... j The number of the first chamber and the number of the second chamber are equal, and i and j are natural numbers greater than 2; The heating tube is disposed between the liquid inlet plate box (1) and the liquid outlet plate box (2), and the interior of the heating tube is connected to the interior of both the liquid inlet plate box (1) and the liquid outlet plate box (2). The plurality of heating tubes are divided into (2N-1) groups, where N is the number of first chambers or second chambers. The first chamber N1 (11) is connected to the second chamber M1 (21) through the first group of heating tubes (100). The second chamber M1 (21) is connected to the first chamber N2 (12) through the second group of heating tubes. The first chamber N2 (12) is then connected to the second chamber M2 (22) through the third group of heating tubes, and so on. The first chamber N1 (11) is located in the middle. i The (2i-2)th set of heating pipes for liquid inlet is connected to the second chamber M. (i-1) The first chamber N, located in the middle i The (2i-1)th group of heating pipes used for liquid discharge is connected to the second chamber M. i Finally, the second chamber M (j-1) The first chamber N at the end is connected via the heating tubes of group (2j-4). j First chamber N j It is also connected to the second end chamber M via the (2j-1)th group of heating pipes. j The first chamber, the first set of heating tubes (100), and the second chamber constitute a heating channel, through which the liquid to be heated is heated in sequence.

2. The multi-pipe heating device according to claim 1, characterized in that, The values ​​of i and j are both 2, so that the interior of the liquid inlet plate box (1) is divided into two non-communicating first chambers by the first flow-blocking element (13). The two first chambers are divided into the first chamber N1 (11) and the first chamber N2 (12). The interior of the liquid outlet plate box (2) is divided into two non-communicating second chambers by the second flow-blocking element (23). The two second chambers are the second chamber M1 (21) and the second chamber M2 (22). The liquid inlet plate box (1) is provided with a liquid inlet (111) communicating with the first chamber N1 (11), and the liquid outlet plate box (2) is provided with a liquid outlet (221) communicating with the second chamber M2 (22). External liquid enters the first chamber N1 (11) through the liquid inlet (111) and flows out from the liquid outlet (221) to the next structure after passing through three consecutive heating channels.

3. The multi-pipe heating device according to claim 2, characterized in that, The first flow-blocking component (13) includes a first partition block with a stepped cross-section, which divides the cavity of the first chamber N1 (11) into a "7" shaped chamber. The volume of the first chamber N2 (12) is larger than the volume of the first chamber N1 (11). The second flow obstruction (23) includes a second partition block with a rectangular cross-section, which divides the cavities of the second chamber M1 (21) and the second chamber M2 (22) into cuboid chambers. The volume of the second chamber M1 (21) is larger than the volume of the second chamber M2 (22). The first chamber N1 (11) is arranged opposite to a portion of the second chamber M1 (21), and the first chamber N2 (12) is arranged opposite to another portion of the second chamber M2 (22) and the second chamber M1 (21).

4. The multi-pipe heating device according to claim 1, characterized in that, The values ​​of i and j are both 3, so that the interior of the liquid inlet plate box (1) is divided into three non-connected first chambers by the first flow-blocking element (13). The three first chambers are divided into first chamber N1 (11), first chamber N2 (12) and first chamber N3 (14). The interior of the liquid outlet plate box (2) is divided into three non-connected second chambers by the second flow-blocking element (23). The three second chambers are second chamber M1 (21), second chamber M2 (22) and second chamber M3 (24). The liquid inlet plate box (1) is provided with a liquid inlet (111) communicating with the first chamber N1, and the liquid outlet plate box (2) is provided with a liquid outlet (221) communicating with the second chamber M3; external liquid enters the first chamber N1 through the liquid inlet (111), and flows out from the liquid outlet (221) to the next structure after passing through seven consecutive heating channels.

5. The multi-pipe heating device according to claim 3, characterized in that, The inlet plate box (1), outlet plate box (2), first flow barrier (13) and second flow barrier (23) are all made of plastic material.

6. The multi-pipe heating device according to claim 5, characterized in that, The multi-pipe heating device also includes a wiring board (3) and a U-shaped cover (31). The wiring board (3) and the U-shaped cover (31) are connected by a first fastening screw to form a U-shaped cover. The two open ends of the U-shaped cover are respectively connected to the liquid inlet plate box (1) and the liquid outlet plate box (2) to form a heating box. The heating box covers several heating pipes inside.

7. The multi-pipe heating device according to claim 6, characterized in that, The wiring board (3) is provided with a wiring module (32); a heating film is provided on the outside of several heating tubes, and silver electrodes electrically connected to the heating film are provided at both ends of the heating tubes. The silver electrodes are electrically connected to the wiring module (32). The heating element is a quartz tube.

8. The multi-pipe heating device according to any one of claims 2-7, characterized in that, The liquid outlet plate box (2) is equipped with a temperature measuring element (222) near the liquid outlet (221) to measure the temperature of the liquid discharged from the liquid outlet (221).

9. The multi-pipe heating device according to any one of claims 1-7, wherein a plurality of fasteners (4) are provided between the liquid inlet plate box (1) and the liquid outlet plate box (2), and the plurality of fasteners (4) are evenly distributed on the outside of the plurality of heating pipes.

10. The multi-pipe heating device according to claim 9, characterized in that, The fastener (4) includes a fastening shaft, and the two ends of the fastening shaft are respectively connected to the liquid inlet plate box (1) and the liquid outlet plate box (2) by second fastening screws. The second fastening screws are spirally displaced along the middle of the fastening shaft to stabilize the relative positions of the liquid inlet plate box (1) and the liquid outlet plate box (2).

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