Heating assembly

Abstract

The utility model relates to the technical field of fluid heating equipment, in particular to a heating assembly, which comprises an electric heating tube group and power connection parts positioned at two axial ends of the electric heating tube group, the electric heating tube group comprises at least two electric heating tubes, electrode parts are arranged at two ends of each electric heating tube, and the electrode parts are electrically connected with the power connection parts; at least one power connection part comprises at least two jack parts, and each jack part at least comprises a jack and a hole wall corresponding to the jack; the jacks are in one-to-one correspondence with the electric heating tubes, and each electric heating tube penetrates through the jack corresponding to the electric heating tube; and at least part of the electrode part is matched with the jack part in a plugging manner. According to the device, the electrodes are assembled with the electric heating tubes in a jack mode, the electric heating tubes are installed in the jacks of the electrodes respectively, installation is easy and convenient, due to the fact that the jacks and the electrodes are integrally formed, the supporting stability of the whole electrodes is better, and the axes of the electric heating tubes are better distributed in parallel.

Description

Technical Field

[0001] This utility model relates to the field of fluid heating equipment technology, and in particular to a heating component. Background Technology

[0002] Currently, in instantaneous pipe heating equipment, the contact part of the heating element is an arc-shaped metal sheet. On the one hand, after the arc-shaped sheet surrounds the heating element, it is generally fixed together with fasteners such as screws. Additional parts are needed to install the contact part to the heating element. On the other hand, when using fasteners such as screws for installation, the arc-shaped sheet is prone to deformation due to stress. This can lead to problems such as non-parallel axes and inconsistent center distances of the heating elements when two or more heating elements are installed into the joint holes. Consequently, the two ends of the heating element cannot be quickly aligned with the joint with the fixed holes, resulting in low assembly efficiency. Utility Model Content

[0003] The purpose of this invention is to solve one of the problems pointed out in the background art, and to propose a heating component.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heating assembly includes an electric heating tube assembly and an electrical connection portion located at both axial ends of the electric heating tube assembly. The electric heating tube assembly includes at least two electric heating tubes, and each electric heating tube has an electrode portion at both ends, the electrode portion being electrically connected to the electrical connection portion.

[0006] At least one of the electrical receiving parts includes at least two socket parts, each socket part including at least a socket and a corresponding hole wall; each socket corresponds to a heating element, and each heating element passes through its corresponding socket; the electrode part is at least partially inserted into the socket part.

[0007] The heating assembly proposed in this utility model has the following advantages: the power receiving part of the device has a socket that is plugged into and connected to the heating element. Multiple heating elements are installed in multiple sockets of the power receiving part, making installation simple and convenient. Furthermore, since the socket is located in the power receiving part, the arrangement error of the multiple heating elements installed in the socket is controlled within a certain range, which facilitates the rapid assembly of the connector holes. The axes of the multiple heating elements are better parallelized, and the error in the center distance between the multiple heating elements is smaller, thereby improving assembly efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall three-dimensional structure of one embodiment of the present invention;

[0009] Figure 2 This is a schematic diagram of the front cross-sectional structure of one embodiment of the present invention;

[0010] Figure 3 This is a schematic diagram of the electrode and support structure according to one embodiment of the present invention;

[0011] Figure 4 This is a schematic diagram of a support structure according to one embodiment of the present invention. Figure 1 ;

[0012] Figure 5 This is a schematic diagram of a support structure according to one embodiment of the present invention. Figure 2 ;

[0013] Figure 6 This is a schematic diagram of the outer shell structure of one embodiment of the present utility model;

[0014] Figure 7 This is a schematic diagram of the first connector structure according to one embodiment of the present invention;

[0015] Figure 8 This is a schematic diagram of the second connector structure according to one embodiment of the present invention;

[0016] Figure 9 This is a schematic diagram of the electrode three-dimensional structure according to one embodiment of the present invention;

[0017] Figure 10 This is a top view schematic diagram of the electrode structure according to one embodiment of the present invention;

[0018] Figure 11 This is a bottom-view schematic diagram of the electrode structure according to one embodiment of the present invention;

[0019] Figure 12 This is a cross-sectional structural schematic diagram of another embodiment of the present invention;

[0020] Figure 13 This is a schematic diagram of the front view structure of another embodiment of the present invention;

[0021] Figure 14 This is a schematic diagram of one embodiment of the present invention, in which the first electrode and the second electrode are connected in series.

[0022] Figure 15 This is a three-dimensional structural diagram of a second embodiment of the present invention in which the first electrode and the second electrode are connected in series.

[0023] Figure 16 This is a schematic diagram of the structure of the parallel connection embodiment of multiple electric heating tubes of this utility model;

[0024] Figure 17 This is a schematic diagram of the structure of the heating channel with one inlet and three outlets according to the present invention.

[0025] In the diagram: Electrode 1, Insertion 2, First Arm 3, Sheet Metal Part 4, Rib 5, Wiring Hole 6, Electrode Part 7, Heating Tube 8, First Connector 9, Second Connector 10, Heating Tube Assembly 11, First Flow Channel 12, Second Flow Channel 13, Liquid Inlet Port 14, Liquid Outlet Port 15, Heat Conducting Tube 16, Heating Flow Channel 17, Cold End Interface 18, Outer Shell 19, First Channel 20, Second Channel 21, Cavity 22, Side Slit 23, Side Opening 24, Bracket 25, Mounting Part 26, Temperature Controller 27, SCR 28, Mounting Base 29, Slot 30, Root 31, Middle Part 32, End 33, First Model Connector 34, Second Model Connector 35, Insertion Part 36, First Electrode 37, Second Electrode 38, First Hole 39, Second Hole 40. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figures 1-17 A heating assembly includes an electric heating tube assembly 11 and an electrical connection portion 1 located at both axial ends of the electric heating tube assembly. The electric heating tube assembly 11 includes at least two electric heating tubes 8, and each electric heating tube 8 has an electrode portion 7 at both ends, which is electrically connected to the electrical connection portion 1.

[0028] At least one electrical connection part 1 includes at least two socket parts 36, each socket part 36 including at least a socket 2 and a corresponding hole wall; each socket 2 corresponds to a heating element 8, and each heating element 8 passes through its corresponding socket 2; the electrode part 7 is at least partially inserted into the socket part 36.

[0029] The device has sockets in the electrical connection section that connect to the heating elements. Multiple heating elements are installed in the sockets of the electrical connection section, making installation simple and convenient. Because the sockets are located in the electrical connection section, the arrangement error of the multiple heating elements installed in the sockets is controlled within a certain range, which facilitates the rapid assembly of the connector holes. The axes of the multiple heating elements are better parallelized, and the error in the center distance between the multiple heating elements is smaller, thereby improving assembly efficiency.

[0030] In one embodiment, the outer diameter of the electrode part 7 is greater than or equal to the inner diameter of the socket 2. The electrode part 7 and the socket part 36 are interference-fitted and electrically connected. The interference fit between the electrode part 7 and the socket part 36 allows for closer contact between the electrode part 7 and the power receiving part 1, ensuring the stability of the power connection. Alternatively, the power receiving part 1 is integrally formed and has a plate-like structure. The integrally formed power receiving part 1 has fewer parts, which helps to reduce the overall number of parts in the heating assembly. Furthermore, because the power receiving part 1 is integrally formed, the overall support stability of the power receiving part 1 is better, allowing for better parallel distribution of the axes of the multiple heating tubes inserted into the sockets 2 of the power receiving part 1, and making it easier to fix the center distance between the sockets 2. The center distance between at least two sockets 2 remains stable during installation, which plays a positioning role for the inserted heating tubes 8.

[0031] As one implementation method, refer to Figures 10-12 The electrical contact part 1 is a sheet metal part with an insertion hole 2. The insertion hole includes a first arm 3 extending from the hole wall corresponding to the insertion hole 2 toward the electrical contact part 1. The first arm 3 is distributed circumferentially along the insertion hole 2 and abuts or is press-fitted with the heating element 8. By clamping the heating element 8 with the first arm 3, the adaptability of the electrode to the diameter of the heating element can be improved, and the probability of the heating element being damaged can be reduced. In addition, the first arm 3 can better ensure the stability of the contact between the electrode 1 and the electrode part 7. It is worth noting that sheet metal parts refer to metal parts made by sheet metal processing technology, usually made from metal sheets through processes such as cutting, bending, stamping, welding, and riveting.

[0032] As one implementation method, refer to Figure 15 , Figure 16 The electrical connection part 1 includes a first electrode 37 and a second electrode 38. The first electrode 37 has 2N sockets 2, and the second electrode 38 has N sockets 2, where N is an integer ≥ 2. The first electrode 37 is located at one axial end of the heating tube assembly 11, and each socket 2 is connected to a heating tube 8. The second electrode 38 is located at the other axial end of the heating tube assembly 11, and each socket 2 is connected to a heating tube 8. This method can achieve multiple heating powers. For example, when one second electrode 38 is electrically connected to the first electrode 37, the first heating power is achieved. When all the second electrodes 38 are electrically connected to the first electrode 37, the second heating power is achieved.

[0033] As another implementation method, refer to Figure 17 The electrical connection part 1 includes a first electrode 37. The number of insertion holes 2 of the first electrode 37 is equal to the number of heating tubes 8. The electrode parts 7 located at both ends of the heating tube 8 are respectively inserted into the insertion holes 2 of the first electrode 37, and the multiple heating tubes 8 are connected in parallel for electrical conduction.

[0034] In one embodiment, at least two socket portions 36 located in the same electrical contact portion 1 are arranged linearly.

[0035] refer to Figures 10-12 The first arm 3 includes a root 31, a middle part 32, and an end part 33 distributed along the axial direction of the insertion hole 2. Compared with the end part 33, the root 31 is closer to the insertion hole 2. The orthographic projection of the middle part 32 along the axial direction of the insertion hole 2 is at least partially located within the orthographic projection range of the corresponding hole wall of the insertion hole 2. The first arm 3 of this device is divided into three parts: root 31, middle part 32, and end part 33. The middle part 32 is at least partially located within the projection range of the insertion hole 2. In this way, when the heating element is inserted, the middle part 32 can better exert the elastic clamping force between the heating elements. Furthermore, the end part 33 of this device extends away from the axial direction of the insertion hole 2, which can prevent the end part 33 from scratching the outer wall of the heating element when it is inserted.

[0036] As one embodiment of the electric heating tube, the electric heating tube includes a tube substrate, a nano-electrothermal film attached to the tube substrate, and an electrode layer attached to the tube substrate and in contact with the nano-electrothermal film. The tube substrate is a quartz tube or a metal tube, etc., and the electrode layer is a silver electrode layer. The electrode part 7 is located in the electrode layer.

[0037] There are three electrical connection parts 1. The heating element assembly 11 includes four heating elements 8. One electrical connection part 1 is a four-hole electrode with four sockets 2. The other two are two-hole electrodes with two sockets 2 each. The four-hole electrode is located at one end of the heating element assembly 11, and one heating element 8 is installed in each socket 2. The two two-hole electrodes are located at the other end of the heating element assembly 11, and each two two-hole electrode is connected to two heating elements 8 respectively. (Reference) Figure 2 This device has three electrodes. One electrode serves as a common terminal for power connection and has four sockets. Each socket is equipped with a heating element. The other two electrodes each have two sockets, and each electrode is connected to two heating elements. When one two-hole electrode is electrically connected to the four-hole electrode, the first heating power is achieved. When both two two-hole electrodes are electrically connected to the four-hole electrode, the second heating power is achieved. This allows for multi-power heating effects.

[0038] As one implementation method, refer to Figure 2 , Figure 13 The heating assembly includes a first connector 9 and a second connector 10 located at the two axial ends of the electric heating tube group 11. The first connector 9 has a plurality of first flow channels 12 inside, and the second connector 10 has a plurality of second flow channels 13 inside. Multiple electric heating tubes 8 form heating flow channels 17 that are connected in series, in parallel, or in a mixed manner through at least the first flow channels 12 and the second flow channels 13.

[0039] Hybrid connectivity refers to a connection that includes both series and parallel flow paths.

[0040] Compared to the traditional method of connecting heating elements with silicone tubes, the first connector 9 and the second connector 10 of this device form their own flow channels, making the assembly of this device simpler and improving the overall assembly efficiency.

[0041] And / or, the power contact part 1 has a rib 5, which is located at the edge of the power contact part 1 and extends to one side of the power contact part 1 along the axial direction of the insertion hole 2; the sheet metal part 4 of this device is a metal sheet structure, and the rib 5 improves the bending resistance of the sheet metal part 4.

[0042] And / or, the electrical contact part 1 has at least one wiring hole 6, which is located in the middle area of ​​two adjacent sockets 2. The wire is installed in the wiring hole by screws or soldering, facilitating the connection between the electrode and the wire.

[0043] refer to Figure 1 , Figure 9 , Figure 13 , Figure 14 The heating assembly includes a liquid inlet port 14 and a liquid outlet port 15. The liquid inlet port 14 and the liquid outlet port 15 are located at one of the first connector 9 and the second connector 10, or the liquid inlet port 14 is located at one of the first connector 9 and the second connector 10, and the liquid outlet port 15 is located at the other of the first connector 9 and the second connector 10. One of the first connector 9 and the second connector 10 has a cold end interface 18 that communicates with the liquid inlet port 14. The liquid inlet port 14 and the liquid outlet port 15 are respectively set at the first connector 9 and the second connector 10, or are set at both the first connector 9 and the second connector 10, depending on the working conditions.

[0044] In one embodiment, the heating assembly includes a liquid inlet port 14, one of the first connector 9 and the second connector 10 having a cold end interface 18 communicating with the liquid inlet port 14, at least two electric heating tubes 8 arranged in parallel, and the heating assembly includes a heat-conducting tube 16, which is located on one side of the electric heating tube group 11 along the arrangement direction of the electric heating tubes 8, or the heat-conducting tube 16 is located between two adjacent electric heating tubes 8; the downstream end of the heat-conducting tube 16 is connected to the cold end interface 18.

[0045] This device is equipped with a heat pipe 16, which absorbs the waste heat generated by the electric heating tube. On the one hand, this helps to cool down the inside of the heating component and reduce the probability of damage to electronic components caused by heat accumulation. On the other hand, it can realize waste heat recovery, increase the initial temperature of the liquid inlet port 14, improve heating efficiency, and save energy.

[0046] In one embodiment, the center distance between two adjacent sockets 2 is equal; or, the power receiving part 1 includes a first electrode 37 and a second electrode 38, the first connector 9 has a first hole 39 communicating with the first flow channel 12, the second connector 10 has a second hole 40 communicating with the second flow channel 21, the center distance between two adjacent sockets 2 of the first electrode 37 is adapted to the center distance between the first hole 39, and the center distance between two adjacent sockets 2 of the second electrode 38 is adapted to the center distance between the second hole 40.

[0047] The center distance of the socket 2 of this device matches the center distance of the electrodes, which can better ensure that the axes of multiple heating tubes are set in parallel after the electrical connection part is installed, and facilitate the installation of the first connector 9 and the second connector 10 at both ends.

[0048] As one embodiment of the heating channel 17, see reference Figure 2 The heating tubes 8 are arranged in pairs. The first connector 9 has at least two first flow channels 12 inside. The two ends of the first flow channel 12 are respectively connected to the two heating tubes 8 in the same group. The liquid inlet port 14 and the liquid outlet port 15 are respectively connected to the heating tubes located at the ends of the heating tube group. The second connector 10 has a second flow channel 13 inside. The second flow channel 13 connects two heating tubes 8 in different groups. In this embodiment, multiple heating tubes 8 are connected in series, which can discharge fluids at higher temperatures.

[0049] As one embodiment of the heating channel 17, see reference Figure 17 The first connector 9 has a first flow channel 12 inside, which is connected to the drain port 15. The inlet port 14 is connected to a heating element, and the first flow channel 12 is connected to the remaining heating elements 8 of the heating element group. The second connector 10 has a second flow channel 13, and the number of second holes 40 is equal to the number of heating elements 8. The second flow channel 13 is connected to the heating elements 8 through at least the second holes 40. In this embodiment, multiple heating elements 8 are connected in a one-inlet-three-outlet configuration, which can discharge a larger flow rate of fluid.

[0050] refer to Figure 1 , Figure 6 The heating assembly includes a housing 19, a heat-conducting pipe 16, and a liquid inlet port 14. The housing 19 is a metal housing with a cavity 22. The heating element assembly 11 is at least partially located in the cavity 22. The housing 19 has a first channel 20. The heat-conducting pipe 16 is at least partially interference-fitted, clearance-fitted, or fixedly connected to the wall of the first channel 20. The downstream end of the heat-conducting pipe 16 is connected to the liquid inlet port 14. The housing 19 better absorbs the waste heat emitted by the heating element assembly 11 and better conducts the waste heat to the heat-conducting pipe 16.

[0051] The heating assembly includes a silicon controlled rectifier (SCR) 28, which is fixed to the housing 19 and positioned close to the first channel 20. The SCR is primarily used to control the power output of the heating assembly. During operation, the SCR generates a significant amount of heat. The SCR 28 is cooled by room-temperature water flowing through the heat pipe 16 and the housing 19. The heat pipe 16 also recovers heat from the SCR 28. (Reference) Figure 1 The thyristor 28 has mounting holes, and the thyristor is fixed to the side slot 23 by screws.

[0052] In one embodiment, the heating assembly includes a housing 19 having a plurality of second channels 21; a first connector 9 and a second connector 10 are respectively located at both ends of the housing 19 along the axial direction of the heating tube 8. The first connector 9 is fixed to at least one end of the second channel 21 by fasteners, and the second connector 10 is fixed to at least the other end of the second channel 21 by fasteners. During installation, the heating tube and the electrode are assembled and then placed into the groove 22 of the housing 19. Then, the heating tube is aligned with the mounting holes of the first connector 9 and the second connector 10. Finally, the first connector 9 and the second connector 10 are directly assembled to both ends of the housing 19, completing the assembly between the heating tube, the first connector 9, the second connector 10, and the housing 19. The installation is simple and convenient.

[0053] In one embodiment, the heating assembly includes a bracket 25. The outer shell 19 has an opening 24 on one side parallel to the axial direction of the heating tube 8. The bracket 25 covers the opening 24. The heating tube assembly 11 is at least partially located in the space enclosed by the outer shell 19 and the bracket 25. The bracket 25 has mounting portions 26 on both sides. The side of the second channel 21 near the opening 24 has a side seam 23. The mounting portions 26 are fixedly connected to the side seam 23. The heating tube assembly 11 is protected by the outer shell 19 and the bracket 25. The side seam 23 is integrally formed when the outer shell is molded. The bracket 25 is directly fixed to the side seam 23 by screws. The installation is simple and convenient and does not require additional openings.

[0054] As one implementation method, refer to Figure 13 , Figure 14 The heating component includes an inlet port 14 and an outlet port 15. The first connector 9, which is provided with the outlet port 15, has a first type connector 34 and a second type connector 35, both of which are connected to the outlet port 15. Alternatively, the second connector 10, which is provided with the outlet port 15, has a first type connector 34 and a second type connector 35, both of which are connected to the outlet port 15. The outlet port 15 of this device is provided with various types of connector structures, which can better adapt to the interfaces of different external devices.

[0055] The heating assembly includes several thermostats 27, and the bracket 25 is provided with several mounting seats 29. Each thermostat 27 has a sheet metal part, and each mounting seat 29 has a groove that matches the shape of the sheet metal part. The sheet metal part and the groove are fixedly connected. The sheet metal part and the groove are fixed by snap-fit ​​or screw. The thermostat 27 is installed through the mounting seat 29 with the groove, which is simple to install. The thermostat 27 can be a self-resetting thermostat or a mechanically resetting thermostat.

[0056] And / or, the side of the bracket 25 near the heating element assembly 11 has a slot 30 pointing towards the contact part 1, the contact part 1 being at least partially inserted into the slot 30. (See reference) Figure 3 , Figure 4 When the bracket is assembled onto the housing 19, the slot 30 is inserted into the electrode 1 to position the electrode.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heating assembly, characterized by, The electric heating pipe group (11) includes at least two electric heating pipes (8), both ends of the electric heating pipe (8) have an electrode part (7), and the electrode part (7) is electrically connected with the power connection part (1); At least one of the power connection parts (1) includes at least two plug-in hole parts (36), the plug-in hole part (36) includes at least a plug-in hole (2) and a hole wall corresponding to the plug-in hole (2); the plug-in hole (2) corresponds to the electric heating pipe (8) one by one, and each electric heating pipe (8) penetrates through the plug-in hole (2) corresponding thereto; and the electrode part (7) is at least partially plugged into the plug-in hole part (36).

2. A heating assembly according to claim 1, wherein, The outer diameter of the electrode part (7) is greater than or equal to the inner diameter of the plug-in hole (2), the electrode part (7) is in interference fit with the plug-in hole part (36), and the electrode part (7) is electrically connected with the plug-in hole part (36); and / or the power connection part (1) is integrally formed, and the power connection part (1) is in a plate-shaped structure; And / or, the power connection part (1) is a sheet metal part, the sheet metal part is provided with the plug-in hole (2), the plug-in hole part includes a first arm (3) extending from the hole wall corresponding to the plug-in hole (2) to one side of the power connection part (1), and the first arm (3) is distributed along the circumference of the plug-in hole (2) and abuts or interferes with the electric heating pipe (8); And / or, the power connection part (1) includes a first electrode (37) and a second electrode (38), the first electrode (37) has 2N plug-in holes (2), the second electrode (38) has N plug-in holes (2), N is an integer greater than or equal to 2; the first electrode (37) is located at one axial end of the electric heating pipe group (11), and each plug-in hole (2) is plugged into one electric heating pipe (8); the second electrode (38) is located at the other axial end of the electric heating pipe group (11), and each plug-in hole (2) is plugged into one electric heating pipe (8); or the power connection part (1) includes a first electrode (37), the number of plug-in holes (2) of the first electrode (37) is equal to the number of electric heating pipes (8), and the electrode parts (7) located at both axial ends of the electric heating pipes (8) are plugged into the plug-in holes (2) of the first electrode (37).

3. A heating assembly according to claim 2, wherein, The first arm (3) includes a root (31), a middle part (32) and an end part (33) distributed along the axis direction of the plug-in hole (2), and the root (31) is closer to the plug-in hole (2) than the end part (33); and the normal projection of the middle part (32) in the axis direction of the plug-in hole (2) is at least partially located in the normal projection range of the hole wall corresponding to the plug-in hole (2). Or, the power connection part (1) is three, the electric heating tube group (11) includes four electric heating tubes (8), one of the power connection parts (1) is a four-hole electrode with four insertion holes (2), the other two are two-hole electrodes with two insertion holes (2), the four-hole electrode is located at one end of the electric heating tube group (11), and one electric heating tube (8) is installed in each insertion hole (2), and the two two-hole electrodes are located at the other end of the electric heating tube group (11), and the two two-hole electrodes are connected with two electric heating tubes (8) respectively.

4. A heating assembly according to any one of claims 1 to 3, wherein, The heating assembly includes a first joint (9) and a second joint (10) located at the two axial ends of the electric heating tube group (11), the first joint (9) has a plurality of first flow channels (12) inside, the second joint (10) has a plurality of second flow channels (13) inside, and a plurality of electric heating tubes (8) form a heating flow channel (17) in series communication, parallel communication or mixed communication through the first flow channel (12) and the second flow channel (13); And / or, the power connection part (1) has a rib part (5), the rib part (5) is located at the edge of the power connection part (1) and extends to one side of the power connection part (1) along the axis direction of the insertion hole (2); And / or, the power connection part (1) is provided with at least one wire hole (6), and the wire hole (6) is located in the middle region of two adjacent insertion holes (2); And / or, at least two insertion hole parts (36) located in the same power connection part (1) are linearly arranged.

5. A heating assembly according to claim 4, wherein, The heating assembly includes a liquid inlet port (14) and a liquid outlet port (15), the liquid inlet port (14) and the liquid outlet port (15) are located in one of the first joint (9) and the second joint (10), or the liquid inlet port (14) is located in one of the first joint (9) and the second joint (10), and the liquid outlet port (15) is located in the other one of the first joint (9) and the second joint (10), and one of the first joint (9) and the second joint (10) has a cold end interface (18) in communication with the liquid inlet port (14); And / or, the heating assembly includes a liquid inlet port (14), one of the first joint (9) and the second joint (10) has a cold end interface (18) in communication with the liquid inlet port (14), at least two electric heating tubes (8) are arranged in parallel, the heating assembly includes a heat conducting pipe (16), the heat conducting pipe (16) is located on one side of the electric heating tube group (11) along the arrangement direction of the electric heating tube (8), or the heat conducting pipe (16) is located between two adjacent electric heating tubes (8); and the downstream end of the heat conducting pipe (16) is in communication with the cold end interface (18). And / or, the center distance of two adjacent said sockets (2) is equal; or, said power connection part (1) comprises a first electrode (37) and a second electrode (38), said first connector (9) has a first hole site (39) communicating with said first flow channel (12), said second connector (10) has a second hole site (40) communicating with said second flow channel (13), the center distance of two adjacent said sockets (2) of said first electrode (37) is adapted to the center distance between said first hole site (39), and the center distance of two adjacent said sockets (2) of said second electrode (38) is adapted to the center distance between said second hole site (40).

6. A heating assembly according to claim 5, wherein, Said heating pipes (8) are grouped in pairs, said first connector (9) has at least two first flow channels (12) inside, both ends of said first flow channels (12) respectively communicate with two said heating pipes (8) in the same group, said liquid inlet port (14) and said liquid outlet port (15) respectively communicate with said heating pipes at the end of said heating pipe group; said second connector (10) has a second flow channel (13) inside, said second flow channel (13) communicates with two said heating pipes (8) in different groups. Or, said first connector (9) has a first flow channel (12) inside, said first flow channel (12) communicates with said liquid outlet port (15), said liquid inlet port (14) communicates with one said heating pipe, said first flow channel (12) communicates with the remaining said heating pipes (8) in said heating pipe group; said second connector (10) has a second flow channel (13), the number of said second hole sites (40) is equal to the number of said heating pipes (8), said second flow channel (13) communicates with said heating pipes (8) through at least said second hole sites (40).

7. A heating assembly according to claim 1, wherein, Said heating assembly comprises an outer shell (19), a heat conducting pipe (16) and a liquid inlet port (14), said outer shell (19) is a metal shell, said outer shell (19) has a groove cavity (22), said heating pipe group (11) is at least partially located in said groove cavity (22), said outer shell (19) has a first channel (20), said heat conducting pipe (16) is at least partially fitted with said first channel (20) corresponding wall portion by interference fit or clearance fit or fixed connection, the downstream end of said heat conducting pipe (16) communicates with said liquid inlet port (14).

8. A heating assembly according to claim 7, wherein, Said heating assembly comprises a silicon controlled rectifier (28), said silicon controlled rectifier (28) is fixed with said outer shell (19) and is arranged close to said first channel (20).

9. A heating assembly according to claim 4, wherein, Said heating assembly comprises an outer shell (19), said outer shell (19) has a plurality of second channels (21); said first connector (9) and said second connector (10) are respectively located at the two ends of said outer shell (19) along the axial direction of said heating pipe (8), said first connector (9) is fixed with one end of said second channel (21) by at least a fastener, said second connector (10) is fixed with the other end of said second channel (21) by at least a fastener; And / or, the heating assembly comprises a bracket (25), an outer shell (19) having a plurality of second channels (21), the outer shell (19) having an opening (24) on the side axially parallel to the electric heating tube (8), the bracket (25) covering the opening (24), the electric heating tube group (11) being at least partially located in the space surrounded by the outer shell (19) and the bracket (25), the bracket (25) having mounting portions (26) on both sides, the side of the second channel (21) close to the opening (24) having a side seam (23), the mounting portions (26) being fixedly connected with the side seam (23); And / or, the heating assembly comprises a liquid inlet port (14) and a liquid outlet port (15), the first joint (9) provided with the liquid outlet port (15) having a first type joint (34) and a second type joint (35), both of which being in communication with the liquid outlet port (15); or the second joint (10) provided with the liquid outlet port (15) having a first type joint (34) and a second type joint (35), both of which being in communication with the liquid outlet port (15).

10. A heating assembly according to claim 9, wherein, The heating assembly comprises a plurality of temperature controllers (27), the bracket (25) being provided with a plurality of mounting seats (29), the temperature controllers (27) having sheet metal portions, the mounting seats (29) having groove portions matched with the shapes of the sheet metal portions, the sheet metal portions being fixedly connected with the groove portions; And / or, the bracket (25) has a clamping groove (30) on the side close to the electric heating tube group (11), the clamping groove (30) being directed to the power connection portion (1), the power connection portion (1) being at least partially inserted into the clamping groove (30).

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