heater

Abstract

The utility model discloses a kind of heaters, heater includes multiple heating pipes and two connecting pieces, the heating pipe includes tube body, insulating layer covered on the tube body, conductive heating layer covered on the insulating layer and two wiring parts separately arranged at the both ends of the tube body and connecting the conductive heating layer;Each the connecting piece includes connector and mounting plate, the connector one end is equipped with first open, the other end is equipped with interface, the mounting plate covers in the first open, and with the connector welding, multiple the heating pipe is installed between two the connecting piece, the mounting plate is equipped with an installation hole corresponding each the heating pipe, one end of the heating pipe is welded in the installation hole of one of the connecting piece, the other end is welded in the installation hole of another the connecting piece, the conductive heating layer and the wiring part are spaced apart from the mounting plate.The utility model technical scheme can reduce the risk of liquid leakage.

Description

Technical Field

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

[0002] Currently, some heaters incorporate multiple heating tubes within the casing, with connectors on both ends of the casing. These connectors connect to multiple heating tubes simultaneously. In use, one connector serves as the water inlet, connected to the water inlet pipe, while the other acts as the water outlet, connected to the water outlet pipe. This allows for the simultaneous heating of liquids through multiple heating tubes. Currently, these heaters primarily use screws to fix the connectors to the ends of the casing, compressing the multiple heating tubes between two connectors. A sealing ring seals the heating tubes and connectors. However, when the pressure inside the heating tubes is high, there is a risk of leakage. Utility Model Content

[0003] The main objective of this invention is to provide a heater designed to reduce the risk of leakage.

[0004] To achieve the above objectives, the heater proposed in this utility model includes:

[0005] Multiple heating elements, each heating element comprising a tube body, an insulating layer covering the tube body, a conductive heating layer covering the insulating layer, and two terminals located at both ends of the tube body and connected to the conductive heating layer; and

[0006] Two connectors are provided, each connector including a connector head and a mounting plate. One end of the connector head has a first opening and the other end has an interface. The mounting plate covers the first opening and is welded to the connector head. A plurality of heating tubes are installed between the two connectors. The mounting plate has a mounting hole for each heating tube. One end of the heating tube is welded to the mounting hole of one of the connectors and the other end is welded to the mounting hole of the other connector. The conductive heating layer and the wiring part are spaced apart from the mounting plate.

[0007] Optionally, the connector includes a sleeve and a flange joint, the flange joint being welded to one end of the sleeve, and the other end of the sleeve having the first opening and being welded to the mounting plate.

[0008] Optionally, the sleeve is tapered and tapered away from the mounting plate.

[0009] Optionally, the pipe body is a stainless steel pipe.

[0010] Optionally, the end face of the connector is provided with an annular groove, which surrounds the opening of the connector.

[0011] Optionally, the outer diameter of the connector is smaller than the inner and outer diameters of the mounting plate. The heater also includes two housings. One end of each housing has a second opening, and the other end has a mounting through hole. The inner diameter of the mounting through hole is smaller than or greater than the outer diameter of the connector and smaller than the inner and outer diameters of the mounting plate, so as to fit over the mounting plate. The second openings of the two housings are connected to each other.

[0012] Optionally, one of the housings has an internal thread inside its second opening, and the other housing has an external thread outside its second opening that mates with the internal thread.

[0013] Optionally, the plurality of heating tubes are spaced apart from each other, and the wiring portions of the plurality of heating tubes are independent of each other.

[0014] Optionally, the number of heating tubes is not less than three.

[0015] This utility model's technical solution utilizes a heater comprising multiple heating tubes and two connectors. Each connector includes a connector head and a mounting plate. One end of the connector head has a first opening, and the other end has an interface. The mounting plate covers the first opening and is welded to the connector head. By providing mounting holes in the mounting plate, one end of the heating tube is welded to the mounting hole of one connector, and the other end is welded to the mounting hole of the other connector. This ensures a reliable connection between the heating tube and the connector head while also achieving a seal between them. Furthermore, the connection strength between the heating tube and the connector head is high, making it difficult for the heating tube and connector head to crack and leak even under high liquid pressure, effectively reducing the risk of leakage. The connector head and mounting plate are welded together to form the connector, simplifying its structure, reducing production difficulty, and facilitating molding. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the heater of this utility model;

[0018] Figure 2 for Figure 1 Exploded view of the heater;

[0019] Figure 3 for Figure 1 Exploded view of the connecting component;

[0020] Figure 4 for Figure 1 A cross-sectional view of the heater after it has been fitted with its housing.

[0021] Explanation of icon numbers:

[0022] 10. Heating tube; 11. Tube body; 12. Conductive heating layer; 20. Connector; 201. First opening; 202. Interface; 203. Annular groove; 21. Connector head; 211. Sleeve; 212. Flange joint; 22. Mounting plate; 221. Mounting hole; 30. Outer shell; 31. Second opening; 32. Mounting through hole.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] This utility model proposes a heater.

[0028] In the embodiments of this utility model, such as Figures 1 to 4 As shown, the heater includes multiple heating tubes 10 and two connectors 20. The heating tube 10 includes a tube body 11, an insulating layer covering the tube body 11, a conductive heating layer 12 covering the insulating layer, and two wiring portions located at both ends of the tube body 11 and connected to the conductive heating layer 12.

[0029] Each connector 20 includes a connector head 21 and a mounting plate 22. One end of the connector head 21 has a first opening 201 and the other end has an interface 202. The mounting plate 22 covers the first opening 201 and is welded to the connector head 21. Multiple heating tubes 10 are installed between two connectors 20. The mounting plate 22 has a mounting hole 221 for each heating tube 10. One end of the heating tube 10 is welded to the mounting hole 221 of one connector 20, and the other end is welded to the mounting hole 221 of the other connector 20. The conductive heating layer 12 and the wiring part are spaced apart from the mounting plate 22.

[0030] Specifically, the connector 21 and the mounting plate 22 enclose an inner cavity, through which multiple heating tubes 10 communicate. In use, one connector 202 is connected to the inlet pipe, and the other connector 21 is connected to the outlet pipe. When liquid enters the inner cavity of the connector 21 from the inlet pipe, it is then distributed to each heating tube 10. The conductive heating layer 12 on each heating tube 10 is connected to the circuit via a wiring portion. When energized, the conductive heating layer 12 heats up and conducts the heat to the tube body 11, thus heating the liquid inside the tube 10. The liquid, heated by the multiple heating tubes 10, flows to the inner cavity of another connector 21 and finally exits through the outlet pipe. The tube body 11 can be made of materials such as stainless steel to provide good corrosion resistance, and the conductive heating layer 12 can be, but is not limited to, rare-earth thin-film heating materials.

[0031] An insulating layer is provided between the tube body 11 and the conductive heating layer 12, and the conductive heating layer 12 and the wiring part are spaced apart from the mounting plate 22. This can achieve liquid-electric separation and effectively avoid leakage.

[0032] The present invention employs a heater comprising multiple heating tubes 10 and two connectors 20. Each connector 20 includes a connector head 21 and a mounting plate 22. One end of the connector head 21 has a first opening 201, and the other end has an interface 202. The mounting plate 22 covers the first opening 201 and is welded to the connector head 21. By providing mounting holes 221 in the mounting plate 22, one end of the heating tube 10 is welded to the mounting hole 221 of one connector 20, and the other end is welded to the mounting hole 221 of the other connector 20. This ensures a reliable connection between the heating tube 10 and the connector head 21 while also achieving a seal between the heating tube 10 and the connector 20. Furthermore, the connection strength between the heating tube 10 and the connector head 21 is high, making it difficult for the heating tube 10 to crack and leak even if the liquid pressure in the heating tube 10 is high, effectively reducing the risk of leakage. The connector 20 is formed by welding the connector 21 and the mounting plate 22, which simplifies the structure of the connector 20, reduces the difficulty of production, and facilitates molding.

[0033] In some embodiments, the connector 21 includes a sleeve 211 and a flange connector 212. The flange connector 212 is welded to one end of the sleeve 211, and the other end of the sleeve 211 has a first opening 201 and is welded to the mounting plate 22. This makes the structures of both the sleeve 211 and the flange connector 212 relatively simple, reduces the difficulty of production, and facilitates molding.

[0034] In some embodiments, the sleeve 211 is tapered and tapered away from the mounting plate 22. This results in a larger space within the sleeve 211 near the mounting plate 22, facilitating the reception of liquid flowing from the multiple heating tubes 10 or the diversion of liquid to the multiple heating tubes 10, while also making the end away from the mounting plate 22 smaller, facilitating the connection of water pipes.

[0035] In some embodiments, the end face of the connector 21 is provided with an annular groove 203, which surrounds the opening of the connector 21. That is, when installing water pipes, a sealing ring can be installed in the annular groove 203 to improve sealing and prevent water leakage.

[0036] In some embodiments, the outer diameter of the connector 21 is smaller than the inner and outer diameters of the mounting plate 22. The heater also includes two housings 30. One end of each housing 30 has a second opening 31, and the other end has a mounting through hole 32. The inner diameter of the mounting through hole 32 is smaller than or greater than the outer diameter of the connector 21 and smaller than the inner and outer diameters of the mounting plate 22, so that it fits over the mounting plate 22. The second openings 31 of the two housings 30 are aligned. During installation, the housings 30 are passed through the connector 20 through the second openings 31, so that the connector 21 protrudes from the mounting through hole 32, and the mounting plate 22 abuts against the inner edge of the mounting through hole 32. Then, the two housings 30 are fixed. In this way, multiple heating tubes 10 can be covered by the two housings 30, which can effectively protect the multiple heating tubes 10. Moreover, the two housings 30 are connected to each other for fixation, which reduces the locking structure between the connector 21 and the housing and simplifies the structure of the heater.

[0037] In some embodiments, one housing 30 has an internal thread in its second opening 31, and the other housing 30 has an external thread that mates with the internal thread in its second opening 31. This simplifies the structure of the housing 30 and facilitates the installation of the two housings 30.

[0038] In some embodiments, the multiple heating tubes 10 are spaced apart from each other, and the wiring portions of the multiple heating tubes 10 are independent of each other. In this way, the multiple heating tubes 10 can be wired in various ways. Depending on the different wiring methods, they can be used with three-phase 380V and single-phase 220V power supplies, realizing flexible control of the equipment usage scenarios. The heating power can also be controlled by controlling the number of multiple heating tubes 10 working at the same time.

[0039] Optionally, the number of heating tubes 10 shall not be less than three, in order to ensure a better heating effect.

[0040] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A heater, characterized in that, include: Multiple heating elements, each heating element comprising a tube body, an insulating layer covering the tube body, a conductive heating layer covering the insulating layer, and two terminals located at both ends of the tube body and connected to the conductive heating layer; and Two connectors are provided, each connector including a connector head and a mounting plate. One end of the connector head has a first opening and the other end has an interface. The mounting plate covers the first opening and is welded to the connector head. A plurality of heating tubes are installed between the two connectors. The mounting plate has a mounting hole for each heating tube. One end of the heating tube is welded to the mounting hole of one of the connectors and the other end is welded to the mounting hole of the other connector. The conductive heating layer and the wiring part are spaced apart from the mounting plate.

2. The heater as claimed in claim 1, characterized in that, The connector includes a sleeve and a flange joint, the flange joint being welded to one end of the sleeve, and the other end of the sleeve having the first opening and being welded to the mounting plate.

3. The heater as described in claim 2, characterized in that, The sleeve is tapered and tapered away from the mounting plate.

4. The heater as claimed in claim 1, characterized in that, The pipe body is made of stainless steel.

5. The heater as claimed in claim 1, characterized in that, The end face of the connector is provided with an annular groove, which surrounds the opening of the connector.

6. The heater as claimed in claim 1, characterized in that, The outer diameter of the connector is smaller than the inner and outer diameters of the mounting plate. The heater also includes two outer shells. One end of each outer shell has a second opening, and the other end has a mounting through hole. The inner diameter of the mounting through hole is smaller than or greater than the outer diameter of the connector and smaller than the inner and outer diameters of the mounting plate, so that it can be fitted onto the outside of the mounting plate. The second openings of the two outer shells are connected to each other.

7. The heater as claimed in claim 6, characterized in that, One of the housings has an internal thread inside its second opening, and the other housing has an external thread outside its second opening that mates with the internal thread.

8. The heater as claimed in claim 1, characterized in that, The multiple heating tubes are spaced apart from each other, and the wiring portions of the multiple heating tubes are independent of each other.

9. The heater as claimed in claim 1, characterized in that, The number of heating elements shall be no less than three.

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