Heating pipe structure adopting coil electromagnetic heating

Abstract

The utility model discloses a heating pipe structure adopting coil electromagnetic heating, which comprises a metal pipe, an electromagnetic heating component, a water inlet pipe and a water outlet pipe, the top and the bottom of the metal pipe are respectively provided with a pipe end connecting piece and a three-way pipe fitting, the wall surface of the inner cavity of each pipe end connecting piece is provided with a first internal thread, and the end surface of each pipe end connecting piece is provided with an external thread pipe; outer threads are arranged on the outer wall faces of the top and the bottom of the metal pipe, the first inner threads of the pipe end connecting piece are in threaded sealing connection with the outer threads of the metal pipe, the three-way pipe fitting is provided with a vertical pipe and a transverse pipe, second inner threads are arranged on the wall face of a pipe cavity of the vertical pipe, and one end of the vertical pipe is in threaded sealing connection with an outer threaded pipe of the pipe end connecting piece. A transverse pipe of the three-way pipe fitting located at the bottom of the metal pipe is connected with a water inlet pipe, and a transverse pipe of the three-way pipe fitting located at the top of the metal pipe is connected with a water outlet pipe. Residual water at the bottom of the pipe cavity can be avoided, noise can be prevented, and water seepage and water leakage at the two ends of the metal pipe can be avoided.

Description

Technical Field

[0001] The utility model relates to an electromagnetic heating device for heating water, in particular to a heating tube structure using coil electromagnetic heating, belonging to the technical field of electromagnetic heating. Background Art

[0002] Electromagnetic heating uses alternating current to convert electrical energy into magnetic energy through a coil, generating an alternating magnetic field around it, and transferring the magnetic energy to the metal pipe through the alternating magnetic field to heat the water in the metal pipe. Electromagnetic heating is energy-saving and power-saving, has no exhaust gas emissions, is clean and hygienic, has water and electricity separation, has a fast heating speed, a high electric-heat conversion rate, a low coil temperature, and ensures clean and hygienic water quality. Therefore, electromagnetic heating has been widely used in civil and industrial heating and other fields.

[0003] The existing heating tube structure using coil electromagnetic heating, see Figure 7 , including a metal pipe 10, an electromagnetic heating component installed on the outer wall of the metal pipe 10, and an inlet pipe 11 and an outlet pipe 12. The electromagnetic heating component is not shown in the figure. The metal pipe 10 is usually made of steel pipe. The metal pipe 10 is arranged upright. A cover plate 15 is respectively arranged at the top and bottom of the metal pipe 10. The cover plate 15 is fixedly installed at both ends of the metal pipe 10 by welding. A horizontal water outlet connecting pipe 13 is provided on the side below the top of the metal pipe 10, and a horizontal water inlet connecting pipe 14 is provided on the side above the bottom of the metal pipe. The horizontal water inlet connecting pipe 14 is connected to the water inlet pipe 11, and the horizontal water outlet connecting pipe 13 is connected to the water outlet pipe 12. When working, water enters the tube cavity of the metal pipe 10 from the bottom of the metal pipe 10 through the water inlet pipe 11 and the horizontal water inlet connecting pipe 14, and flows out from the top of the metal pipe 10 through the horizontal water outlet connecting pipe 13 and the water outlet pipe 12. The electromagnetic heating component heats the water entering the tube cavity of the metal pipe 10 and then outputs it.

[0004] However, the existing heating tube structure has the following three defects during use: (1) Since the lateral water inlet connecting pipe is arranged on the upper side of the bottom end of the metal tube, that is, water enters from the side of the metal tube, when the heating equipment is shut down, there will be residual water at the bottom of the metal tube cavity that cannot be removed, causing rust and difficulty in cleaning; (2) Since the lateral water outlet connecting pipe is arranged on the lower side of the top end of the metal tube, that is, water is discharged from the side of the metal tube, and since there is a cavity in the upper part of the metal tube cavity, air will remain in the tube, which will not only generate noise during operation, but also affect the working efficiency of the equipment; (3) Since the cover plate is welded and fixed at both ends of the metal tube, on the one hand, air holes are easily generated at the welding points, causing water seepage or even leakage, which is easy to rust and corrode after long-term use; on the other hand, since the cover plate cannot be removed, the metal tube cavity cannot be cleaned. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a heating tube structure using coil electromagnetic heating which can avoid residual water at the bottom of the metal tube cavity, prevent noise during operation, and avoid water seepage and leakage at both ends of the metal tube.

[0006] In order to solve the above technical problems, the utility model adopts such a heating tube structure using coil electromagnetic heating, including a metal tube, an electromagnetic heating component installed on the outer wall surface of the metal tube, and a water inlet pipe and a water outlet pipe. The metal tube is arranged upright, and water enters the metal tube cavity from the bottom of the metal tube through the water inlet pipe and flows out from the top of the metal tube through the water outlet pipe. The electromagnetic heating component heats the water entering the metal tube cavity. A pipe end connector and a three-way pipe fitting are provided at the top and bottom of the metal tube. The pipe end connector is in a barrel shape, and a first internal thread is provided on the inner cavity wall surface of the pipe end connector, and a first internal thread is provided on the end surface of the pipe end connector. An externally threaded tube protruding axially outward is provided on the top, and the externally threaded tube is connected to the inner cavity of the tube end connector. External threads are provided on the outer wall surfaces of the top and bottom of the metal tube. The first internal thread of the tube end connector is screwed and sealed with the external thread of the metal tube. The three-way pipe fitting has a vertical tube and a horizontal tube. A second internal thread is provided on the tube cavity wall of the vertical tube. One end of the vertical tube is screwed and sealed with the externally threaded tube of the tube end connector, and a sealing cover is detachably installed on the other end of the vertical tube. The horizontal tube of the three-way pipe fitting located at the bottom of the metal tube is connected to the water inlet pipe, and the horizontal tube of the three-way pipe fitting located at the top of the metal tube is connected to the water outlet pipe.

[0007] As a preferred embodiment of the utility model, the electromagnetic heating component includes a supporting frame, a magnetic head frame, a winding skeleton, a magnetic head and a coil. The supporting frame is annular and is installed on the outer wall surface of the metal tube along the circumference of the metal tube. There are at least two magnetic head frames and they are arranged radially on the supporting frame in pairs. The coil is wound on the winding skeleton, the winding skeleton is installed on the magnetic head, and the magnetic head is installed on the magnetic head frame.

[0008] As a preferred embodiment of the utility model, the sealing cover is threadedly and sealedly connected to the other end of the vertical pipe, and a water level sensor and / or a temperature sensor is arranged in the vertical pipe cavity of the three-way pipe fitting.

[0009] After adopting the above structure, the utility model has the following beneficial effects:

[0010] The metal pipe of the utility model enters water through the lateral pipe of the three-way pipe fitting located at the bottom, thereby effectively avoiding the problem of residual water at the bottom of the metal pipe cavity and keeping the pipe wall clean. The metal pipe of the utility model exits water through the lateral pipe of the three-way pipe fitting located at the top, so that no air remains in the cavity, avoiding the problem of noise during operation, and improving the working efficiency and performance of the equipment.

[0011] The two ends of the metal pipe of the utility model are screwed and sealed with the pipe end connector by means of internal and external threads, which, on the one hand, avoids the water seepage and leakage problems caused by the welding connection method in the prior art, and on the other hand, the pipe end connector can be removed from the metal pipe during cleaning, thereby making the cleaning of the pipe wall more convenient and quick.

[0012] The two ends of the metal tube of the utility model have the same structure, and the symmetrical design of the two ends makes the positioning of the metal tube more accurate, and does not consider the problem of positive and negative installation, is more suitable for assembly line tooling, and saves installation costs.

[0013] The utility model fixes the water inlet and outlet, so that the installation consistency is better.

[0014] The utility model has a simple structure and is convenient to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 The utility model is a schematic diagram of a heating tube structure using coil electromagnetic heating.

[0017] Figure 2 The utility model is a structural schematic diagram of the pipe end connector.

[0018] Figure 3 for Figure 2 Schematic diagram of the main view.

[0019] Figure 4 The utility model is a structural schematic diagram of a three-way pipe fitting.

[0020] Figure 5 It is a structural schematic diagram of the metal tube in the utility model.

[0021] Figure 6 It is a structural schematic diagram of the electromagnetic heating component in the utility model.

[0022] Figure 7 It is a schematic diagram of the structure of a heating tube in the prior art. DETAILED DESCRIPTION

[0023] See also Figures 1 to 6A heating tube structure using coil electromagnetic heating is shown, comprising a metal tube 1, an electromagnetic heating assembly 2 installed on the outer wall of the metal tube 1, and an inlet pipe and an outlet pipe. The metal tube 1 can be a steel tube, a galvanized tube, a stainless steel tube, etc. The metal tube 1 is uprightly arranged in a box, and the inlet pipe, the outlet pipe and the box are not shown in the figure. Water enters the tube cavity of the metal tube 1 from the bottom of the metal tube 1 through the inlet pipe and flows out from the top of the metal tube 1 through the outlet pipe. The electromagnetic heating assembly 2 heats the water entering the tube cavity of the metal tube 1. A pipe end connector 3 and a three-way pipe fitting 4 are provided at the top and bottom of the metal tube 1. The pipe end connector 3 is barrel-shaped, and a first internal thread 3-1 is provided on the inner cavity wall of the pipe end connector 3. An external threaded pipe 3-2 protruding outward along the axial direction is provided on the end face of the pipe end connector 3. It is connected to the inner cavity of the pipe end connector 3, and external threads 1-1 are provided on the outer wall surfaces of the top and bottom of the metal pipe 1. The first internal thread 3-1 of the pipe end connector 3 is screwed and sealed with the external thread 1-1 of the metal pipe 1. When the two are threadedly connected, it is preferably provided with a sealing tape between the internal and external threads, so that the tightness and sealing effect are better. The three-way pipe fitting 4 has a vertical pipe 4-1 and a horizontal pipe 4-2. The wall surface of the pipe cavity of the vertical pipe 4-1 is provided with a second internal thread 4a. One end of the vertical pipe 4-1 is screwed and sealed with the external threaded pipe 3-2 of the pipe end connector 3 through the second internal thread 4a, and a sealing cover 5 is detachably installed on the other end of the vertical pipe 4-1. The horizontal pipe 4-2 of the three-way pipe fitting 4 located at the bottom of the metal pipe 1 is connected to the water inlet pipe, and the horizontal pipe 4-2 of the three-way pipe fitting 4 located at the top of the metal pipe 1 is connected to the water outlet pipe.

[0024] As a preferred embodiment of the present invention, Figure 1 , 6 As shown, the electromagnetic heating assembly 2 includes a support frame 2-1, a magnetic head frame 2-2, a winding frame 2-3, a magnetic head and a coil. The support frame 2-1 is annular and is installed on the outer wall of the metal tube 1 along the circumference of the metal tube 1. There are at least two magnetic head frames 2-2 and they are arranged on the support frame 2-1 in a radial direction in pairs. As shown in the figure, there are preferably four magnetic head frames 2-2 and they are evenly distributed along the radial direction of the metal tube 1. The coil is wound on the winding frame 2-3, the winding frame 2-3 is installed on the magnetic head, and the magnetic head is installed on the magnetic head frame 2-2. The magnetic head and the coil are not shown in the figure. After adopting such a structure, the electromagnetic heating energy conversion rate and heating effect can be greatly improved, and the installation of the magnetic head also becomes simple and convenient. The support frame 2-1 and the magnetic head frame 2-2 of the utility model are preferably an integral part made in one piece. In addition to the above-mentioned structure, the electromagnetic heating assembly 2 of the utility model can also adopt other conventional structures using coil electromagnetic heating.

[0025] As a preferred embodiment of the present invention, Figure 1As shown, the sealing cover 5 is threadedly sealed and connected with the other end of the vertical pipe 4-1. During implementation, it is only necessary to make an external thread on the sealing cover 5, and the external thread of the sealing cover 5 is threadedly engaged with the second internal thread 4a at the other end of the vertical pipe 4-1. A water level sensor and / or a temperature sensor is arranged in the tube cavity of the vertical pipe 4-1 of the three-way pipe fitting 4, and the water level sensor and the temperature sensor are not shown in the figure.

[0026] After trial, the utility model can avoid residual water at the bottom of the metal tube cavity, there is no noise during operation, no water seepage and leakage occurs at both ends of the metal tube, and the utility model has a simple structure and is easy to manufacture, thus achieving good practical effects.

Claims

1. A heating tube structure using coil electromagnetic heating, comprising a metal tube (1), an electromagnetic heating assembly (2) mounted on the outer wall of the metal tube (1), a water inlet pipe and a water outlet pipe, wherein the metal tube (1) is arranged upright, water enters the tube cavity of the metal tube (1) from the bottom of the metal tube (1) through the water inlet pipe and flows out from the top of the metal tube (1) through the water outlet pipe, and the electromagnetic heating assembly (2) heats the water entering the tube cavity of the metal tube (1), characterized in that: A pipe end connector (3) and a three-way pipe fitting (4) are provided at the top and bottom of the metal pipe (1); the pipe end connector (3) is in the shape of a cylinder; a first internal thread (3-1) is provided on the inner wall surface of the pipe end connector (3); an external threaded pipe (3-2) protruding outwardly in the axial direction is provided on the end surface of the pipe end connector (3); the external threaded pipe (3-2) is connected to the inner wall of the pipe end connector (3); external threads (1-1) are provided on the outer wall surfaces of the top and bottom of the metal pipe (1); the first internal thread (3-1) of the pipe end connector (3) is connected to the external thread (3-2) of the metal pipe (1) 1-1) threaded sealed connection, the three-way pipe fitting (4) comprises a vertical pipe (4-1) and a horizontal pipe (4-2), a second internal thread (4a) is provided on the wall surface of the tube cavity of the vertical pipe (4-1), one end of the vertical pipe (4-1) is threaded and sealedly connected to the external threaded pipe (3-2) of the pipe end connector (3), and a sealing cover (5) is detachably mounted on the other end of the vertical pipe (4-1), the horizontal pipe (4-2) of the three-way pipe fitting (4) located at the bottom of the metal pipe (1) is connected to the water inlet pipe, and the horizontal pipe (4-2) of the three-way pipe fitting (4) located at the top of the metal pipe (1) is connected to the water outlet pipe.

2. The heating tube structure using coil electromagnetic heating according to claim 1, characterized in that: The electromagnetic heating component (2) comprises a support frame (2-1), a magnetic head frame (2-2), a winding frame (2-3), a magnetic head and a coil; the support frame (2-1) is annular and is mounted on the outer wall surface of the metal tube (1) along the circumference of the metal tube (1); at least two magnetic head frames (2-2) are arranged on the support frame (2-1) in a radial direction opposite to each other; the coil is wound on the winding frame (2-3); the winding frame (2-3) is mounted on the magnetic head; and the magnetic head is mounted on the magnetic head frame (2-2).

3. The heating tube structure using coil electromagnetic heating according to claim 1 or 2, characterized in that: The sealing cover (5) is threadedly and sealingly connected to the other end of the vertical pipe (4-1), and a water level sensor and / or a temperature sensor is arranged in the lumen of the vertical pipe (4-1) of the three-way pipe fitting (4).

Images