Contactless heating system based on electromagnetic technology

Abstract

The utility model discloses a kind of contactless heating system based on electromagnetic technology, including heating system pipeline and the frequency conversion electronic scale removal unit connected with the outer wall of heating system pipeline;Frequency conversion electronic scale removal unit includes single-chip microcontroller control module, the control chip connected with the output end of single-chip microcontroller control module, the H bridge drive circuit connected with the output end of control chip, and the electromagnetic coil connected with the output end of H bridge drive circuit;Electromagnetic coil spiral winding is in the outer wall of heating system pipeline;Single-chip microcontroller control module is used to generate frequency-adjustable PWM square wave signal;Control chip is used to modulate PWM square wave signal;H bridge drive circuit is used to amplify modulated signal to drive electromagnetic coil to generate high-frequency alternating electromagnetic field for making the crystallization morphology of scale-forming substance in water in heating system pipeline change to form soft scale.The utility model can change the physical properties of scale-forming substance in water, realize scale inhibition and scale removal, achieve the purpose of energy saving, water saving, prolonging equipment life.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology for heating systems, and specifically to a contactless heating system based on electromagnetic technology. Background Technology

[0002] Centralized heating covers a vast area in northern Chinese cities, with heating energy consumption accounting for over 50% of total building energy consumption. Scale buildup and corrosion in heating pipe networks are critical issues affecting system thermal efficiency, operational safety, and equipment lifespan. Scale buildup is primarily caused by the precipitation and deposition of hardness ions such as calcium and magnesium in the water during heating, significantly reducing heat transfer efficiency and increasing energy consumption. Corrosion, on the other hand, is caused by the erosion of pipe materials by harmful substances such as dissolved oxygen and chloride ions, posing a risk of leakage.

[0003] Currently, most mainstream water treatment methods are chemical-based. While these methods are effective to some extent, they suffer from drawbacks such as high operating costs, potential secondary pollution, and the need for dedicated maintenance personnel. Therefore, developing a highly efficient, economical, and environmentally friendly physical water treatment technology is urgently needed and of great significance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a contactless heating system based on electromagnetic technology, which can change the physical properties of scale-forming substances in water by generating a high-frequency alternating electromagnetic field, thereby achieving scale inhibition and removal, and thus achieving the purpose of energy saving, water saving and extending equipment life.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A contactless heating system based on electromagnetic technology includes heating system pipes, and further includes a variable frequency electronic descaling unit connected to the outer wall of the heating system pipes. The variable frequency electronic descaling unit includes a microcontroller control module, a control chip connected to the output of the microcontroller control module, an H-bridge drive circuit connected to the output of the control chip, and an electromagnetic coil connected to the output of the H-bridge drive circuit. The electromagnetic coil is spirally wound around the outer wall of the heating system pipes. The microcontroller control module generates a frequency-adjustable PWM square wave signal. The control chip modulates the PWM square wave signal. The H-bridge drive circuit amplifies the modulated signal to drive the electromagnetic coil to generate a high-frequency alternating electromagnetic field that changes the crystal morphology of scale-forming substances in the water within the heating system pipes to form soft scale.

[0007] Preferably, the microcontroller control module includes a microcontroller minimum system, which consists of a microcontroller and a power supply circuit, a reset circuit, and a crystal clock circuit connected to the microcontroller, and the output terminal of the microcontroller is connected to the PWM input terminal of the control chip.

[0008] Preferably, the power supply circuit is equipped with a decoupling capacitor.

[0009] Preferably, the microcontroller control module also integrates a JTAG online emulator circuit for realizing online system debugging.

[0010] Preferably, the frequency range of the PWM square wave signal output by the control chip is 0-600kHz.

[0011] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0012] This invention utilizes a variable-frequency electronic descaling unit that generates a high-frequency alternating electromagnetic field, along with an electromagnetic coil connected to the unit and spirally wound around the outer wall of the heating system pipes. This not only effectively inhibits and removes scale, improving heat exchange efficiency and saving energy, but also eliminates the need for chemical agents, avoiding secondary pollution, reducing system makeup water consumption, and conserving water resources. Simultaneously, it significantly reduces the corrosion rate of the heating system pipes, extending the service life of the pipe network and equipment, and reducing the risk of leakage. Furthermore, through single-chip microcomputer intelligent control, the frequency is adjustable, adapting to different water quality conditions and optimizing the treatment effect. Installation and maintenance are simple, helping to reduce operating costs and shorten the investment payback period. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a block diagram illustrating the principle of the variable frequency electronic descaling unit of this utility model; Figure 3 This is a circuit diagram of the reset circuit of this utility model; Figure 4 This is a circuit diagram of the crystal clock circuit of this utility model; Figure 5 The circuit diagram of the JTAG online emulator circuit of this utility model is shown below. Figure 6 This is a circuit diagram of the control chip of this utility model; Figure 7 This is a schematic diagram illustrating the working principle of this utility model.

[0014] Among them: 1. heating system pipelines, 2. frequency conversion electronic descaling unit, 3. electromagnetic coil. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] A contactless heating system based on electromagnetic technology, combined with Figures 1 to 2As shown, the system includes a heating system pipe 1 and a variable frequency electronic descaling unit 2, with the variable frequency electronic descaling unit 2 connected to the outer wall of the heating system pipe 1. The variable frequency electronic descaling unit 2 includes a microcontroller control module, a control chip, an H-bridge drive circuit, and an electromagnetic coil 3. The microcontroller control module generates a frequency-adjustable PWM square wave signal. The input terminal of the control chip is connected to the output terminal of the microcontroller control module, and the control chip is used to modulate the PWM square wave signal. The input terminal of the H-bridge drive circuit is connected to the output terminal of the control chip, and the output terminal of the H-bridge drive circuit is connected to the electromagnetic coil 3. The electromagnetic coil 3 is spirally wound around the outer wall of the heating system pipe 1. The H-bridge drive circuit amplifies the modulated signal, thereby driving the electromagnetic coil 3 to generate a high-frequency alternating electromagnetic field. The high-frequency alternating electromagnetic field is used to change the crystal morphology of scale-forming substances in the water inside the heating system pipe 1, forming soft scale.

[0017] The microcontroller control module includes a microcontroller minimum system and a JTAG online emulator circuit.

[0018] The minimum microcontroller system consists of a microcontroller and power supply circuits, reset circuits, and crystal clock circuits connected to the microcontroller. The output of the microcontroller is connected to the PWM input of the control chip. Specifically, the minimum microcontroller system can be implemented using, for example, the C8051F series microcontroller and its typical application circuits. This is existing technology, and its power supply circuit, reset circuit, and crystal clock circuit are detailed below: The power supply circuit utilizes existing technology and is a low-dropout linear regulator circuit based on an industrial-grade LDO chip. The power supply circuit provides a voltage range of +2.7V to +3.6V to the microcontroller, ensuring its normal and stable operation. Furthermore, the power supply circuit is equipped with decoupling capacitors to reduce high- and low-frequency interference signals, resulting in a more stable and ripple-free output voltage.

[0019] like Figure 3 The diagram shows the circuit diagram of the reset circuit, which is a composite reset circuit based on the RC delay principle and integrating a manual button. The reset circuit is used to generate a reset signal, which is sent to the microcontroller through the RST pin to perform the reset operation.

[0020] like Figure 4 The diagram shown is a circuit diagram of a crystal clock circuit, which is existing technology and is a standard reference design based on an 8MHz passive crystal and Pierce oscillator architecture. The crystal clock circuit is used to provide a reference clock signal for the system.

[0021] The JTAG in-circuit emulator circuit is used to facilitate system debugging. The microcontroller has boundary scan and in-circuit debugging capabilities. By integrating the JTAG in-circuit emulator circuit and connecting it to the host computer via multiple JTAG pins, its ability to achieve full-speed, non-intrusive in-circuit system debugging can be evaluated and analyzed. For example... Figure 5The diagram shown is a circuit diagram of a JTAG online emulator circuit. It is an existing technology and is a debug interface circuit built on the IEEE 1149.1 standard, which includes level conversion and signal protection functions. The control chip is the core component of this system. The microcontroller outputs an adjustable frequency PWM square wave signal to the control chip, which modulates the PWM square wave signal. The frequency range of the output PWM square wave signal is adjustable between 0-600 kHz. Specifically, the control chip can be a HIP4801 chip, which is existing technology. The circuit diagram is shown below. Figure 6 As shown.

[0022] The modulated signal is sent to the H-bridge drive circuit for power amplification to enhance its load-carrying capacity. Finally, the amplified electrical signal drives the electromagnetic coil 3 to work. The electromagnetic coil 3 is spirally and tightly wound on the outer wall of the heating system pipe 1, specifically on the outer wall of the water supply or return pipe of the heating system. When a high-frequency alternating current is passed through it, a high-frequency alternating electromagnetic field is generated inside the heating system pipe 1. Under the action of the high-frequency electromagnetic field, the crystals of scale-forming substances in the water soften, fall off, and dissolve, thereby achieving scale inhibition and removal, and achieving the purpose of energy saving, water saving, and extending equipment life.

[0023] When using this utility model, such as Figure 7 As shown, the working principle is as follows: When water flows through section 1 of the heating system pipe wound with electromagnetic coil 3, it is subjected to a high-frequency alternating electromagnetic field. This field causes water molecules to resonate, disrupting their hydration with calcium and magnesium ions. It also affects the crystallization process of microcrystals such as calcium carbonate, transforming their hard, dense calcite structure into a loose, easily discharged aragonite structure (soft scale), thus achieving physical descaling and scale inhibition. The entire water treatment process requires no chemical additives, achieving contactless and environmentally friendly treatment.

Claims

1. A contactless heating system based on electromagnetic technology, comprising heating system pipelines (1), characterized in that: It also includes a variable frequency electronic descaling unit (2) connected to the outer wall of the heating system pipeline (1); the variable frequency electronic descaling unit (2) includes a single-chip microcomputer control module, a control chip connected to the output end of the single-chip microcomputer control module, an H-bridge drive circuit connected to the output end of the control chip, and an electromagnetic coil (3) connected to the output end of the H-bridge drive circuit; the electromagnetic coil (3) is spirally wound around the outer wall of the heating system pipeline (1); the single-chip microcomputer control module is used to generate a frequency-adjustable PWM square wave signal; the control chip is used to modulate the PWM square wave signal; the H-bridge drive circuit is used to amplify the modulated signal to drive the electromagnetic coil (3) to generate a high-frequency alternating electromagnetic field to change the crystal morphology of scale-forming substances in the water in the heating system pipeline (1) to form soft scale.

2. The contactless heating system based on electromagnetic technology according to claim 1, characterized in that: The microcontroller control module includes a microcontroller minimum system, which consists of a microcontroller and a power supply circuit, a reset circuit, and a crystal clock circuit connected to the microcontroller. The output terminal of the microcontroller is connected to the PWM input terminal of the control chip.

3. The contactless heating system based on electromagnetic technology according to claim 2, characterized in that: The power supply circuit is equipped with decoupling capacitors.

4. The contactless heating system based on electromagnetic technology according to claim 2, characterized in that: The microcontroller control module also integrates a JTAG online emulator circuit for realizing online system debugging.

5. The contactless heating system based on electromagnetic technology according to claim 1, characterized in that: The frequency range of the PWM square wave signal output by the control chip is 0-600kHz.

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