heater

Abstract

The utility model discloses a kind of heaters, and the heater heater includes two pipe joints, multiple heating pipes and multiple connecting rods, each pipe joint is equipped with multiple mounting holes and multiple screw holes, and the thread direction of screw hole on two pipe joints is opposite. Multiple heating pipes are arranged between two pipe joints, and one end of each heating pipe is correspondingly inserted into a mounting hole of one pipe joint, and the other end is correspondingly inserted into a mounting hole of another pipe joint. Multiple connecting rods are distributed along the circumference of pipe joint, and one end of each connecting rod is correspondingly screwed into the screw hole of a pipe joint, and the other end is correspondingly screwed into the screw hole of another pipe joint. The utility model technical scheme can reduce the volume of heater.

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, connecting to the water inlet pipe, while the other acts as the water outlet, connecting to the water outlet pipe. This allows for simultaneous heating of liquids through multiple heating tubes. The primary method is to secure the connectors to the ends of the casing with screws, compressing the multiple heating tubes between the two connectors. To ensure reliable installation, a significant amount of space is typically required between the casing and the connectors for screw installation, resulting in a relatively large heater size. Utility Model Content

[0003] The main objective of this invention is to provide a heater that reduces its size.

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

[0005] Two pipe fittings, each of which has multiple mounting holes and multiple threaded holes, with the thread directions of the threaded holes on the two pipe fittings being opposite;

[0006] Multiple heating elements are disposed between two pipe joints, with one end of each heating element inserted into a mounting hole of one pipe joint and the other end inserted into a mounting hole of the other pipe joint; and

[0007] Multiple connecting rods are distributed circumferentially around the pipe joint. One end of each connecting rod is screwed into a screw hole of one pipe joint, and the other end is screwed into a screw hole of another pipe joint.

[0008] Optionally, the connecting rod is further provided with an anti-slip part in the middle for clamping the screwing tool.

[0009] Optionally, the anti-slip part includes limiting planes disposed on opposite sides of the connecting rod, and the two limiting planes are parallel.

[0010] Optionally, the number of connecting rods is not less than three.

[0011] Optionally, the mounting hole includes a first section near the inner cavity of the pipe joint and a second section away from the inner cavity of the pipe joint, the inner diameter of the second section being larger than the inner diameter of the first section, and the end of the heating tube being adapted to be inserted into the second section.

[0012] Optionally, a seal is provided between the heating tube and the second orifice.

[0013] Optionally, the sealing element includes an outer ring portion, an inner ring portion located within the outer ring portion, and a connecting portion connecting one end of the outer ring portion and the inner ring portion, with the end of the heating tube inserted between the inner ring portion and the outer ring portion, and the outer ring portion abutting against the inner wall of the second hole segment.

[0014] Optionally, the pipe fitting includes a fixing base and a fitting body, the fixing base having the mounting hole and the screw hole, and one end of the fitting body being welded to the fixing base.

[0015] Optionally, the pipe fitting is tapered and tapered away from the heating pipe.

[0016] Optionally, the end of the pipe fitting away from the heating pipe is provided with a connecting flange.

[0017] 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.

[0018] This invention provides a solution by setting multiple screw holes on two pipe joints, with the threads of the screw holes on the two pipe joints facing opposite directions. While placing multiple heating tubes between the two pipe joints, one end of each connecting rod is screwed into the screw hole of one pipe joint, and the other end is screwed into the screw hole of the other pipe joint. During installation, the multiple heating tubes are aligned with the multiple mounting holes of the two pipe joints, and the two ends of the connecting rods are aligned with the screw holes of the two pipe joints. By rotating the connecting rods, both ends of the connecting rods are simultaneously screwed into the screw holes of the two pipe joints, causing the pipe joints to gradually press the heating tubes together. When all the connecting rods are in place, the two pipe joints and the multiple heating tubes are fixed in place. This method ensures a secure connection between the two pipe joints, guaranteeing reliable heater installation. Furthermore, the screw holes are blind holes, eliminating the need for through-hole designs. This allows for the use of the space between adjacent heating tubes on the pipe joints to create screw holes, resulting in a smaller distance between the screw and the heating tube, improving the compactness of the heater structure and reducing its size. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the heater of this utility model;

[0021] Figure 2 for Figure 1 Top view of the heater;

[0022] Figure 3 for Figure 2 Sectional view at point XX;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0024] Explanation of icon numbers:

[0025] 10. Pipe fitting; 11. Fixing base; 111. Mounting hole; 111a. First hole section; 111b. Second hole section; 112. Screw hole; 12. Fitting body; 20. Heating tube; 30. Connecting rod; 31. Anti-slip part; 40. Sealing element; 41. Outer ring part; 42. Inner ring part; 43. Connecting part.

[0026] 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] This utility model proposes a heater.

[0031] In the embodiments of this utility model, such as Figures 1 to 4 As shown, the heater includes two pipe joints 10, multiple heating tubes 20 and multiple connecting rods 30. Each pipe joint 10 is provided with multiple mounting holes 111 and multiple screw holes 112. The screw holes 112 on the two pipe joints 10 have opposite thread directions (i.e., the screw hole 112 on one pipe joint 10 is a positive thread and the screw hole 112 on the other pipe joint 10 is a reverse thread).

[0032] Multiple heating tubes 20 are disposed between two pipe joints 10. One end of each heating tube 20 is inserted into a mounting hole 111 of one pipe joint 10, and the other end is inserted into a mounting hole 111 of the other pipe joint 10.

[0033] Multiple connecting rods 30 are distributed circumferentially along the pipe joint 10. One end of each connecting rod 30 is screwed into the screw hole 112 of one pipe joint 10, and the other end is screwed into the screw hole 112 of another pipe joint 10.

[0034] Specifically, the heating tube 20 includes a tube body and a heating layer disposed outside the tube body. The tube body can be made of materials such as silicon nitride, stainless steel, or glass to provide good corrosion resistance. The heating layer is formed by spraying or other processes on the surface of the tube body. The heating layer generates heat when energized, thereby heating the liquid flowing through the tube body. This avoids the heating layer coming into contact with the liquid. The tube body is made of insulating material, or an insulating layer is placed between the tube body and the heating layer to achieve liquid-electric separation and prevent leakage. The heating layer can be made of, but is not limited to, rare earth thin-film heating materials.

[0035] Each connecting rod 30 has external threads at both ends, with the threads at both ends of the connecting rod 30 having opposite directions, so that the two ends of the connecting rod 30 correspond to the screw holes 112 of the two pipe joints 10. During installation, the multiple heating tubes 20 are aligned with the multiple mounting holes 111 of the two pipe joints 10, and the two ends of the connecting rod 30 are aligned with the screw holes 112 of the two pipe joints 10. By rotating the connecting rod 30, the two ends of the connecting rod 30 can be screwed into the screw holes 112 of the two pipe joints 10 at the same time, so that the pipe joints 10 gradually press the heating tubes 20. When the multiple connecting rods 30 are all installed in place, the two pipe joints 10 and the multiple heating tubes 20 can be fixed.

[0036] This utility model's technical solution involves setting multiple screw holes 112 on two pipe joints 10, with the threads of the screw holes 112 on the two pipe joints 10 facing opposite directions. While placing multiple heating tubes 20 between the two pipe joints 10, one end of each connecting rod 30 is screwed into the screw hole 112 of one pipe joint 10, and the other end is screwed into the screw hole 112 of the other pipe joint 10. During installation, the multiple heating tubes 20 are aligned with the multiple mounting holes 111 of the two pipe joints 10, and the two ends of the connecting rod 30 are aligned with the screw holes 112 of the two pipe joints 10. By rotating the connecting rod 30, both ends of the connecting rod 30 are simultaneously screwed into the screw holes 112 of the two pipe joints 10, causing the pipe joints 10 to gradually press against the heating tubes 20. When all the connecting rods 30 are in place, the two pipe joints 10 and the multiple heating tubes 20 are fixed. This design ensures that the connecting rod 30 securely connects the two pipe joints 10, guaranteeing reliable heater installation. Furthermore, the screw hole 112 can be a blind hole, eliminating the need for a through-hole design. Consequently, the screw hole 112 can be installed in the space between adjacent heating tubes 20 on the pipe joint 10, resulting in a smaller distance between the screw and the heating tube 20. This improves the compactness of the heater structure and reduces its size.

[0037] In some embodiments, the connecting rod 30 is further provided with an anti-slip part 31 in the middle for clamping a tightening tool, which facilitates the assembly and disassembly of the connecting rod 30. The tightening tool can be a wrench, etc.

[0038] In some embodiments, the anti-slip portion 31 includes limiting planes disposed on opposite sides of the connecting rod 30, and the two limiting planes are parallel. This structure is simple and easy to process and form. Of course, in other embodiments, the anti-slip portion 31 includes protruding ribs disposed on opposite sides of the connecting rod 30.

[0039] In some embodiments, the number of connecting rods 30 is not less than three, which can ensure that the two pipe joints 10 are subjected to force evenly and avoid the inconvenience of installation due to an excessive number of connecting rods 30.

[0040] In some embodiments, the mounting hole 111 includes a first section 111a near the inner cavity of the pipe connector 10 and a second section 111b away from the inner cavity of the pipe connector 10. The inner diameter of the second section 111b is larger than the inner diameter of the first section 111a, and the end of the heating tube 20 is adapted to be inserted into the second section 111b. That is, the outer diameter of the heating tube 20 is larger than the inner diameter of the first section 111a, so as to restrict the end of the heating tube 20 and prevent the heating tube 20 from extending into the inner cavity of the pipe connector 10. This structure is simple and facilitates the assembly of the heating tube 20 and the pipe connector 10.

[0041] In some embodiments, a sealing element 40 is provided between the heating tube 20 and the second hole section 111b, which can improve the sealing performance between the heating tube 20 and the second hole section 111b, prevent leakage, and facilitate the installation of the heating tube 20. Of course, in other embodiments, the heating tube 20 and the second hole section 111b can also be press-fitted to achieve a seal.

[0042] In some embodiments, the seal 40 includes an outer ring portion 41, an inner ring portion 42 located within the outer ring portion 41, and a connecting portion 43 connecting one end of the outer ring portion 41 and the inner ring portion 42. The end of the heating tube 20 is inserted between the inner ring portion 42 and the outer ring portion 41, and the outer ring portion 41 abuts against the inner wall of the second hole section 111b. This allows the seal 40 to be stably installed at the end of the heating tube 20, preventing the seal 40 from shifting or falling off during installation.

[0043] In some embodiments, the pipe fitting 10 includes a fixing base 11 and a fitting body 12. The fixing base 11 is provided with a mounting hole 111 and a screw hole 112, and one end of the fitting body 12 is welded to the fixing base 11. This makes both the fixing base 11 and the fitting body 12 relatively simple and easy to form, while welding the fitting body 12 to the fixing base 11 ensures both stable connection and sealing.

[0044] In some embodiments, the pipe fitting 10 is tapered and tapers away from the heating tube 20; this results in a larger space in the portion of the pipe fitting 10's interior near the heating tube 20, facilitating the reception of liquid flowing from multiple heating tubes 20 or the diversion of liquid to multiple heating tubes 20, while simultaneously making the end away from the heating tube 20 smaller, facilitating the connection of a water pipe. Optionally, the end of the pipe fitting 10 away from the heating tube 20 is provided with a connecting flange, thus facilitating the installation of quick couplings.

[0045] In some embodiments, the multiple heating tubes 20 are spaced apart from each other, and the wiring portions of the multiple heating tubes 20 are independent of each other. In this way, the multiple heating tubes 20 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 20 working at the same time.

[0046] 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: Two pipe fittings, each of which has multiple mounting holes and multiple threaded holes, with the thread directions of the threaded holes on the two pipe fittings being opposite; Multiple heating tubes are disposed between two pipe joints, with one end of each heating tube inserted into a mounting hole of one pipe joint and the other end inserted into a mounting hole of the other pipe joint. as well as Multiple connecting rods are distributed circumferentially around the pipe joint. One end of each connecting rod is screwed into a screw hole of one pipe joint, and the other end is screwed into a screw hole of another pipe joint.

2. The heater as claimed in claim 1, characterized in that, The connecting rod is also provided with an anti-slip part in the middle for clamping the screwing tool.

3. The heater as described in claim 2, characterized in that, The anti-slip part includes limiting planes disposed on opposite sides of the connecting rod, and the two limiting planes are parallel.

4. The heater as claimed in claim 1, characterized in that, The number of connecting rods shall not be less than three.

5. The heater as claimed in claim 1, characterized in that, The mounting hole includes a first hole section close to the inner cavity of the pipe joint and a second hole section away from the inner cavity of the pipe joint. The inner diameter of the second hole section is larger than the inner diameter of the first hole section, and the end of the heating tube is adapted to be inserted into the second hole section.

6. The heater as claimed in claim 5, characterized in that, A seal is provided between the heating tube and the second hole section.

7. The heater as claimed in claim 6, characterized in that, The sealing element includes an outer ring portion, an inner ring portion located within the outer ring portion, and a connecting portion connecting one end of the outer ring portion and the inner ring portion. The end of the heating tube is inserted between the inner ring portion and the outer ring portion, and the outer ring portion abuts against the inner wall of the second hole section.

8. The heater as claimed in claim 1, characterized in that, The pipe fitting includes a fixing base and a fitting body. The fixing base is provided with the mounting hole and the screw hole, and one end of the fitting body is welded to the fixing base.

9. The heater as claimed in claim 1, characterized in that, The pipe joint is tapered and tapers away from the heating pipe. The pipe fitting has a connecting flange at the end away from the heating pipe.

10. 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.

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