Electric heating pipe, water tank and electric water heater

Abstract

The utility model provides an electric heating tube, a water tank and an electric water heater, comprising: a heating tube, the heating tube comprising a resistance wire and a connecting tube, the connecting tube having an accommodating cavity, the resistance wire being arranged in the accommodating cavity and being used for generating heat when energized; the wiring assembly is connected with the connecting pipe, and the resistance wire is electrically connected with an external power supply through a wiring terminal of the wiring assembly to supply power to the resistance wire; the vibration assembly is arranged in the containing cavity, the vibration assembly comprises a driving part and a shaking block, the driving part is fixed to the inner wall of the connecting pipe, and the driving part drives the shaking block to move in the containing cavity and enables the shaking block to shake in the moving process; when the shaking block shakes, the shaking block collides with the inner wall of the connecting pipe, and therefore the connecting pipe vibrates. According to the electric heating pipe, the water tank and the electric water heater, the technical problem that the heat transfer efficiency is affected due to the fact that impurities are prone to being attached to the surface of the electric heating pipe in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating, and particularly relates to an electric heating tube, a water tank and an electric water heater. Background Art

[0002] At present, in modern household appliances, the widely used metal heating tube still adopts the traditional tubular heating structure. The heating tube is made of materials such as stainless steel and enamel steel pipe. The highest surface temperature of the internal resistance wire can reach more than 1500°C. When statically heating in the water tank, the heat generated on the surface of the electric heating tube is extremely easy to attach free substances in the water. In this way, over time, impurities in the water scale on the surface of the electric heating tube, which will not only affect the heat transfer and heat exchange of the electric heating tube, but also easily corrode the electric heating tube and cause tube explosion.

[0003] Therefore, the existing technology needs to be further developed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide an electric heating tube, a water tank and an electric water heater to solve the technical problem that impurities are easily attached to the surface of the electric heating tube in the related technology, affecting the heat transfer efficiency.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions: An electric heating tube is provided, including: a heating tube, the heating tube includes a resistance wire and a connecting tube, the connecting tube has a receiving cavity, the resistance wire is arranged in the receiving cavity and is used to generate heat when powered on; a wiring assembly, the wiring assembly is connected to the connecting tube, and the resistance wire is electrically connected to an external power supply through the wiring terminal of the wiring assembly to supply power to the resistance wire; a vibration assembly, the vibration assembly is arranged in the receiving cavity, the vibration assembly includes a driving component and a shaking block, the driving component is fixed on the inner wall of the connecting tube, the driving component drives the shaking block to move in the receiving cavity, and makes the shaking block generate shaking during the movement; when the shaking block shakes, it collides with the inner wall of the connecting tube, thereby making the connecting tube vibrate.

[0006] Further, the vibration assembly further includes a connecting rod, the connecting rod is connected to the shaking block, the driving component is a micro motor, the output shaft of the micro motor is connected to the connecting rod, and when the output shaft drives the connecting rod to move, the shaking block collides with the inner wall of the connecting tube.

[0007] Further, the vibration assembly further includes a cover body, the cover body is arranged in the receiving cavity, the micro motor is located inside the cover body, the connecting rod includes a first connecting portion and a second connecting portion, the first connecting portion is located outside the cover body and is connected to the shaking block, the second connecting portion passes through the cover wall of the cover body and enters the cover body, the output shaft is connected to the second connecting portion, and the output shaft drives the second connecting portion to move, so that the connecting rod is movable relative to the cover body.

[0008] Furthermore, the output shaft and the second connecting portion are both provided with toothed structures so that the output shaft is engaged with the connecting rod. When the output shaft rotates, the second connecting portion moves in the cover so that the connecting rod moves along the rotation axis direction perpendicular to the output shaft.

[0009] Furthermore, the micro motor is electrically connected to an external power source via a wiring terminal, and two stoppers are provided on the second connection portion. The two stoppers are respectively located on both sides of the output shaft, and the stoppers are made of iron material.

[0010] Furthermore, the vibration assembly also includes a spring, which is sleeved on the first connecting part, one end of the spring is connected to the shaking block, and the other end of the spring is connected to the cover body; when the electric heating tube is energized, the output shaft rotates, driving the second connecting part to move, so that the shaking block moves in a direction close to the cover body until the stator coil of the micro motor contacts one of the stop pieces and stops moving, and the spring is in a compressed state at this time; when the electric heating tube is powered off, the spring resets, pushing the shaking block to move in a direction away from the cover body until the stator coil contacts another stop piece and stops moving.

[0011] Furthermore, a protrusion is provided on the shaking block, and when the shaking block shakes, the protrusion hits the inner wall of the connecting pipe.

[0012] Furthermore, the connecting tube is a U-shaped tube, both ends of the connecting tube are connected to the wiring assembly, there are at least two vibration assemblies, and the at least two vibration assemblies are respectively located in the accommodating cavities at both ends of the connecting tube.

[0013] A water tank comprises the electric heating tube as mentioned above.

[0014] An electric water heater comprises the water tank as mentioned above.

[0015] Beneficial effects:

[0016] 1. The electric heating tube, water tank and electric water heater of the utility model, when the power is on or off, the shaking block in the accommodating cavity collides with the tube wall, causing the tube wall to vibrate, thereby shaking off impurities and dust attached to the surface of the electric heating tube body, thereby avoiding the formation of scaling due to the increasing amount of attached impurities and dust.

[0017] 2. The electric heating tube, water tank and electric water heater of the utility model prevent impurities in the water from scaling around the heating tube, thus providing a guarantee for normal heating of the electric heating tube and heat transfer of water.

[0018] 3. The electric heating tube, water tank and electric water heater of the utility model have a terminal power lead connected to a resistance wire and a micro motor in the connecting tube. The micro motor and the resistance wire work synchronously when the power is on and off, causing the tube wall of the connecting tube to vibrate, thereby preventing impurities in the water from falling onto the connecting tube after static heating or power failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the electric heating tube adopted in the embodiment of the present utility model;

[0020] Figure 2 It is a usage state diagram in which the spring in the vibration assembly adopted in the embodiment of the present utility model is compressed;

[0021] Figure 3 It is a usage state diagram in which the compressed spring in the vibration assembly adopted in the embodiment of the present utility model resets;

[0022] Figure 4 It is a schematic structural diagram of the connecting rod in the vibration assembly adopted in the embodiment of the present utility model;

[0023] Figure 5 It is a schematic structural diagram of the water tank equipped with the electric heating tube adopted in the embodiment of the present utility model.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 1, heating tube; 11, resistance wire; 12, connecting pipe; 13, accommodating cavity; 2, wiring assembly; 21, terminal; 3, vibration assembly; 31, shaking block; 311, protrusion; 32, micro motor; 321, output shaft; 322, stator coil; 33, connecting rod; 331, first connecting portion; 332, second connecting portion; 333, stop piece; 34, cover body; 35, spring; 4, mounting box. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0027] According to an embodiment of the present utility model, an electric heating tube is provided. Please refer to Figures 1 to 5, including: a heating tube 1, the heating tube 1 includes a resistance wire 11 and a connecting tube 12, the connecting tube 12 has a receiving cavity 13, the resistance wire 11 is arranged in the receiving cavity 13 and is used to generate heat when electrified; a wiring assembly 2, the wiring assembly 2 is connected to the connecting tube 12, and the resistance wire 11 is electrically connected to an external power supply through a terminal 21 of the wiring assembly 2 to supply power to the resistance wire 11; a vibration assembly 3, the vibration assembly 3 is arranged in the receiving cavity 13, the vibration assembly 3 includes a driving component and a shaking block 31, the driving component is fixed on the inner wall of the connecting tube 12, the driving component drives the shaking block 31 to move in the receiving cavity 13, and causes the shaking block 31 to generate shaking during the movement; when the shaking block 31 shakes, it collides with the inner wall of the connecting tube 12, so as to make the connecting tube 12 vibrate. The power lead of the terminal 21 is connected to the resistance wire 11 and the driving component in the connecting tube 12. When the driving component is electrified, it generates a driving force to drive the shaking block 31 to move in the receiving cavity 13. During the movement, shaking is generated, and the vibration generated by the collision of the shaking block 31 with the inner wall of the connecting tube 12 will be transmitted along the tube wall of the connecting tube 12. This vibration transmission helps to prevent fouling on the outer wall of the connecting tube 12, because the vibration generated by the collision can cause the impurities attached to the tube wall to loosen and fall off, realizing the descaling function and ensuring the heat transfer efficiency. The electric heating tube of this embodiment solves the technical problem that impurities are easily attached to the surface of the electric heating tube in the related art, affecting the heat transfer efficiency.

[0028] Refer to Figure 2 and Figure 3 , for the electric heating tube of this embodiment, the vibration assembly 3 further includes a connecting rod 33, the connecting rod 33 is connected to the shaking block 31, the driving component is a micro motor 32, and the output shaft 321 of the micro motor 32 is connected to the connecting rod 33. When the output shaft 321 drives the connecting rod 33 to move, the shaking block 31 collides with the inner wall of the connecting tube 12. By driving the connecting rod 33 and the shaking block 31 to move and generate shaking in the receiving cavity 13 by the micro motor 32, the vibration generated by the collision of the shaking block 31 with the inner wall of the connecting tube 12 can effectively peel off and remove impurities, scale or deposits attached to the inner wall of the connecting tube. This automatic vibration cleaning method helps to keep the outside of the connecting tube 12 clean, improve the heating efficiency, and reduce the increase in energy consumption and equipment failures caused by scaling.

[0029] Refer to Figure 2 and Figure 3In the electric heating tube of this embodiment, the vibration assembly 3 also includes a cover 34, which is arranged in the accommodating cavity 13, and the micro motor 32 is located in the cover 34. The connecting rod 33 includes a first connecting portion 331 and a second connecting portion 332. The first connecting portion 331 is located outside the cover 34 and is connected to the shaking block 31. The second connecting portion 332 passes through the cover wall of the cover 34 and enters the cover 34. The output shaft 321 is connected to the second connecting portion 332, and the output shaft 321 drives the second connecting portion 332 to move, so that the connecting rod 33 is movable relative to the cover 34. The cover 34 can isolate the noise and vibration generated by the micro motor 32 when it is working to a certain extent, and reduce the impact on the electric heating tube as a whole and the surrounding environment. By fixing the micro motor 32 in the cover 34 and connecting it to the shaking block 31 through the connecting rod 33, the overall structural stability of the vibration assembly 3 is enhanced, which helps to ensure the effective transmission of the driving force of the micro motor, while reducing the risk of loosening or damage of components caused by vibration.

[0030] See also Figure 2 and Figure 3 In the electric heating tube of this embodiment, the output shaft 321 and the second connecting part 332 are both provided with a tooth structure, so that the output shaft 321 is engaged with the connecting rod 33. When the output shaft 321 rotates, the second connecting part 332 moves in the cover 34, so that the connecting rod 33 moves along the direction of the rotation axis perpendicular to the output shaft 321. The engagement connection of the tooth structure ensures that the output shaft 321 of the micro motor 32 can accurately transmit the rotational power to the second connecting part 332 of the connecting rod 33. During the vibration process, it can better withstand the impact force and vibration generated by the collision between the shaking block 31 and the inner wall of the connecting tube 12.

[0031] See also Figure 2 , Figure 3 and Figure 4 In the electric heating tube of this embodiment, the micro motor 32 is electrically connected to the external power supply through the terminal 21. Two stoppers 333 are arranged on the second connection part 332. The two stoppers 333 are respectively located on both sides of the output shaft 321. The stoppers 333 are made of iron material. When the output shaft 321 rotates and drives the second connection part 332 to move, the stoppers 333 prevent the second connection part 332 from moving out of the cover 34, thereby preventing the second connection part 332 from excessively moving and deviating from the preset trajectory. On the other hand, the stopper 333 is an iron sheet. The stopper 333 moves with the rotor and the output shaft 321 to drive the second connection part 332. The energized micro motor 32 generates an electromagnetic force equivalent to an electromagnet. When the stopper 333 moves to the iron and contacts it, the micro motor 32 and the stopper 333 are self-retained by magnetic force.

[0032] See also Figure 2 , Figure 3 and Figure 4, for the electric heating tube of this embodiment, the vibration assembly 3 further includes a spring 35. The spring 35 is sleeved on the first connecting portion 331. One end of the spring 35 is connected to the swaying block 31, and the other end of the spring 35 is connected to the cover body 34. When the electric heating tube is powered on, the output shaft 321 rotates, driving the second connecting portion 332 to move, so that the swaying block 31 moves towards the cover body 34 until the stator coil 322 of the micro motor 32 contacts one of the stop pieces 333 and stops moving. At this time, the spring 35 is in a compressed state. When the electric heating tube is powered off, the spring 35 resets, pushing the swaying block 31 to move away from the cover body 34 until the stator coil 322 contacts the other stop piece 333 and stops moving. The output shaft 321 of the micro motor 32 is connected to the rotor, that is, the stator coil 322 surrounds the periphery of the output shaft 321. When the electric heating tube is powered on, the resistance wire 11 is powered on for heating. At the same time, the output shaft 321 of the micro motor rotates, and the engaging structure causes the connecting rod 33 to drive the swaying block 31 to approach the cover body 34, so that the spring 35 arranged between the cover body 34 and the swaying block 31 is compressed (as Figure 2 shown), until the stator coil 322 of the micro motor 32 contacts the right stop piece 333. The energized stator coil 322 generates an electromagnetic force equivalent to an electromagnet. When the stop piece 333 reaches beside the stator coil 322 and contacts the iron core of the stator coil 322, it is self-held by magnetic force, so that the second connecting portion 332 stops moving. When de-energized, the stator coil 322 is powered off. At this time, the electromagnetic force between the stator coil 322 and the iron stop piece 333 is less than the elastic force of the spring 35. The spring 35 resets and pushes the swaying block 31 away from the cover body 34. The micro motor 32 rotates single-turn, and the reset process of the spring 35 also drives the swaying block 31 to vibrate until the output shaft 321 of the micro motor 32 contacts the other stop piece 333, causing the second connecting portion 332 to stop moving (as Figure 3 and Figure 4 shown). The vibration duration can be made into different time periods such as 5S, 10S, 20S, etc. according to the contraction stroke of the spring 35.

[0033] Refer to Figure 2 and Figure 3 , for the electric heating tube of this embodiment, a protrusion 311 is further provided on the swaying block 31. When the swaying block 31 sways, the protrusion 311 knocks on the inner wall of the connecting pipe 12. The design of the protrusion 311 enables the swaying block 31 to more concentratedly transfer the vibration energy to the connecting pipe 12 during the swaying process. Since the direct contact area between the protrusion 311 and the inner wall of the connecting pipe 12 is relatively small, higher local impact force can be generated, thereby promoting the propagation and diffusion of vibration on the pipe wall of the connecting pipe.

[0034] Refer to Figure 1, for the electric heating tube of this embodiment, the connecting pipe 12 is a U-shaped pipe. Both ends of the connecting pipe 12 are connected to the wiring assembly 2. There are at least two vibration assemblies 3, and at least two vibration assemblies 3 are respectively located in the accommodation cavities 13 at both ends of the connecting pipe 12. The design of the U-shaped pipe enables the connecting pipe 12 to not only have more accommodation cavities 13 for accommodating the resistance wire 11, but also reduce the path of vibration transmission and enhance the vibration propagation effect. At least two vibration assemblies 3, that is to say, there are power sources at both ends of the U-shaped pipe, which can generate vibrations in two directions simultaneously, thereby enhancing the vibration effect of the entire system.

[0035] Refer to Figure 5 , for the water tank of this embodiment, the above-mentioned electric heating tube is adopted, and the structure of the electric heating tube is arranged in the installation box 4. When the static water tank is in the static state after the water in and out cycle, there will be free ions of impurities in the water adhering to the surface of the electric heating tube. When the electric heating tube of the water tank is powered on, the electric heating tube starts to heat up. The vibration of the vibration assembly 3 makes the electric heating tube vibrate, which can reduce the impurities attached to the surface of the tube body and prevent the impurities attached to the surface from scaling under the high-temperature operation of the electric heating tube; when the electric heating tube is powered off, the vibration assembly 3 vibrates again to drive the impurities attached to the surface of the connecting pipe 12 of the electric heating tube to vibrate, reducing the scaling and corrosion on the surface of the electric heating tube body. The water tank of this embodiment has a high heat transfer efficiency, can maximize the conversion of electrical energy into heat energy, and reduce energy waste.

[0036] The electric water heater of this embodiment adopts the above-mentioned water tank, and can minimize energy loss and improve the energy efficiency ratio during the heating process.

[0037] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] Optionally, the specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be elaborated here.

[0039] The serial numbers of the above embodiments of this application are only for description and do not represent the superiority or inferiority of the embodiments.

[0040] In the above embodiments of the present application, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0041] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An electric heating tube, characterized in that: include: A heating tube (1), the heating tube (1) comprising a resistance wire (11) and a connecting tube (12), the connecting tube (12) having a receiving cavity (13), the resistance wire (11) being arranged in the receiving cavity (13) and used for generating heat when powered on; A wiring assembly (2), wherein the wiring assembly (2) is connected to the connecting tube (12), and the resistance wire (11) is electrically connected to an external power source via a wiring terminal (21) of the wiring assembly (2) to supply power to the resistance wire (11); A vibration component (3), wherein the vibration component (3) is arranged in the accommodating cavity (13), and the vibration component (3) comprises a driving component and a shaking block (31), wherein the driving component is fixed on the inner wall of the connecting tube (12), and the driving component drives the shaking block (31) to move in the accommodating cavity (13), and causes the shaking block (31) to shake during the movement; when the shaking block (31) shakes, it collides with the inner wall of the connecting tube (12), thereby causing the connecting tube (12) to vibrate.

2. The electric heating tube according to claim 1, characterized in that: The vibration component (3) also includes a connecting rod (33), wherein the connecting rod (33) is connected to the shaking block (31); the driving component is a micro motor (32), and the output shaft (321) of the micro motor (32) is connected to the connecting rod (33); when the output shaft (321) drives the connecting rod (33) to move, the shaking block (31) collides with the inner wall of the connecting tube (12).

3. The electric heating tube according to claim 2, characterized in that: The vibration component (3) also includes a cover body (34), the cover body (34) is arranged in the accommodating cavity (13), the micro motor (32) is located in the cover body (34), the connecting rod (33) includes a first connecting part (331) and a second connecting part (332), the first connecting part (331) is located on the outside of the cover body (34) and is connected to the shaking block (31), the second connecting part (332) passes through the cover body wall of the cover body (34) and enters the cover body (34), the output shaft (321) is connected to the second connecting part (332), and the output shaft (321) drives the second connecting part (332) to move, so that the connecting rod (33) is movable relative to the cover body (34).

4. The electric heating tube according to claim 3, characterized in that: The output shaft (321) and the second connecting portion (332) are both provided with tooth structures so that the output shaft (321) and the connecting rod (33) are engaged and connected. When the output shaft (321) rotates, the second connecting portion (332) moves in the cover body (34) so ​​that the connecting rod (33) moves along a rotation axis direction perpendicular to the output shaft (321).

5. The electric heating tube according to claim 4, characterized in that: The micro motor (32) is electrically connected to an external power source via the wiring terminal (21); two stoppers (333) are provided on the second connection portion (332); the two stoppers (333) are respectively located on two sides of the output shaft (321); and the stoppers (333) are made of iron material.

6. The electric heating tube according to claim 5, characterized in that: The vibration component (3) further comprises a spring (35), wherein the spring (35) is sleeved on the first connecting portion (331), one end of the spring (35) is connected to the shaking block (31), and the other end of the spring (35) is connected to the cover body (34); When the electric heating tube is powered on, the output shaft (321) rotates, driving the second connecting portion (332) to move, so that the shaking block (31) moves in a direction close to the cover body (34) until the stator coil (322) of the micro motor (32) contacts one of the stop plates (333) and stops moving, at which time the spring (35) is in a compressed state; When the electric heating tube is powered off, the spring (35) is reset, pushing the shaking block (31) to move in a direction away from the cover body (34) until the stator coil (322) contacts another stopper (333) and stops moving.

7. The electric heating tube according to claim 1, characterized in that: The shaking block (31) is also provided with a protrusion (311), and when the shaking block (31) shakes, the protrusion (311) strikes the inner wall of the connecting pipe (12).

8. The electric heating tube according to claim 1, characterized in that: The connecting tube (12) is a U-shaped tube, both ends of the connecting tube (12) are connected to the wiring assembly (2), there are at least two vibration assemblies (3), and at least two vibration assemblies (3) are respectively located in the accommodating cavities (13) at both ends of the connecting tube (12).

9. A water tank, characterized in that: It comprises the electric heating tube as claimed in any one of claims 1 to 8.

10. An electric water heater, characterized in that: Comprising a water tank as claimed in claim 9.

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