Electromagnetic heating device for fluid kinetic energy heat pumps

Abstract

This utility model discloses an electromagnetic heating device for a fluid kinetic energy heat pump, belonging to the technical field of electromagnetic heating devices for heat pumps. It mainly includes an electromagnetic heating cylinder, with an outlet pipe and an inlet pipe fixedly connected to both ends of the cylinder. A spirally distributed hollow metal tube is provided on the outer side of the electromagnetic heating cylinder, with an insulation layer between the hollow metal tube and the electromagnetic heating cylinder. A detachable flexible insulated water pipe is connected to both ends of the hollow metal tube, and a conductive port is provided on the hollow metal tube. This utility model uses a hollow spiral metal tube as the electromagnetic induction carrier. The hollow structure allows cooling water and other cooling media to circulate inside, preventing excessive heating due to electromagnetic induction and improving the safety and reliability of the heat pump system. This utility model is mainly used for electromagnetic heating of heat pumps.

Description

Technical Field

[0001] This utility model belongs to the technical field of electromagnetic heating devices for heat pumps, and more specifically, it relates to an electromagnetic heating device for fluid kinetic energy heat pumps. Background Technology

[0002] Currently, most auxiliary heating devices for fluid kinetic energy heat pumps on the market use resistance heating. Although resistance heating has a simple structure, it has many drawbacks: First, it has low heating efficiency, with a large amount of energy lost to the air as heat, and the actual heat conversion efficiency is usually less than 80%; second, it has poor safety, as the resistance heating element is constantly at a high temperature, which can easily lead to aging and short circuits, and there is a risk of leakage when it is in direct contact with the fluid; third, it lacks adaptability, as it cannot adjust the heating power in real time according to changes in fluid kinetic energy. When the fluid flow rate or velocity fluctuates, it is prone to overheating or underheating, affecting the stability of the heat pump system.

[0003] To address the aforementioned issues, some devices employ electromagnetic heating. For instance, patent CN220269657U discloses a high-efficiency air-source heat pump auxiliary heating device, which includes an electromagnetic heating mechanism. This mechanism comprises an electromagnetic heating cylinder, an input pipe, and an output pipe. The electromagnetic heating cylinder includes a heating pipe, a heat insulation layer, and a heating coil arranged sequentially from the inside out. The heating coil is electrically connected to an electromagnetic heating controller. Heating fins are evenly distributed radially along the inner wall of the heating pipe, and magnet groups are evenly distributed along the outer edge of the heating coil. Each magnet group includes several magnetic strips arranged axially along the outer edge of the heating coil. This improves the operating environment range of the air-source heat pump, enabling it to operate normally and reliably even in extremely cold environments.

[0004] However, the aforementioned electromagnetic heating mechanism also has the following problems: 1. The electromagnetic heating mechanism heats the heating cylinder by energizing the heating coil and utilizing the principle of magnetic induction. When the heating coil is working, Joule heating is generated due to the current passing through it. Simultaneously, the surface temperature rises significantly due to the combined effects of the heating pipe's own heating and the concentrated magnetic field effect of the magnet group. This high temperature causes the insulation layer to age, soften, or even melt rapidly, leading to exposed coil conductors and short circuits. The instantaneous high temperature generated by the short circuit is sufficient to ignite flammable components around the coil, resulting in significant safety hazards. 2. Asbestos is used as the insulation layer. Asbestos fibers are highly carcinogenic, causing the device to fail to meet market environmental access requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electromagnetic heating device for a fluid kinetic energy heat pump. It uses a hollow spiral metal tube as an electromagnetic induction carrier. The hollow structure allows cooling medium such as cooling water to circulate inside, avoiding excessive heating due to electromagnetic induction and improving the safety and reliability of the heat pump system.

[0006] The electromagnetic heating device for a fluid kinetic energy heat pump includes an electromagnetic heating cylinder, with an outlet pipe and an inlet pipe fixedly connected to both ends of the electromagnetic heating cylinder, a spirally distributed hollow metal tube on the outside of the electromagnetic heating cylinder, an insulation layer between the hollow metal tube and the electromagnetic heating cylinder, a detachable flexible insulating water pipe connected to both ends of the hollow metal tube, and an electrical contact for conducting electricity on the hollow metal tube.

[0007] Preferably, the hollow metal tube includes a spiral metal tube, the electrical port is connected to the spiral metal tube, the outside of the spiral metal tube is wrapped with heat shrink tubing, and water pipe joints are fixed at both ends of the spiral metal tube, with a flexible insulated water pipe and the water pipe joints being interference fit.

[0008] Preferably, the spiral metal tube is a hollow copper tube.

[0009] Preferably, the flexible insulated water pipe and the water pipe joint are fixedly connected by clamps, and the connection between the flexible insulated water pipe and the water pipe joint is wrapped with insulating tape.

[0010] Preferably, the insulation layer is made of rock wool.

[0011] Preferably, the hollow metal tube has an insulating layer on its outer side.

[0012] Preferably, the insulating layer is formed by winding insulating tape.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a hollow spiral metal tube as an electromagnetic induction carrier. The spiral structure enhances the strength and uniformity of the alternating magnetic field, and works in conjunction with the electromagnetic heating cylinder to generate heat efficiently under the eddy current effect. The hollow structure allows cooling media such as cooling water to circulate inside, preventing excessive heating due to electromagnetic induction. A rock wool insulation layer is set between the electromagnetic heating cylinder and the spiral metal tube to reduce heat loss, so that most of the energy is directed to heating the fluid, thereby improving the heating efficiency and safety reliability of the heat pump system.

[0014] 2. Double insulation protection is adopted. The heat shrink tubing on the outside of the spiral metal tube forms the basic insulation protection, and the outermost insulation layer effectively avoids the risk of leakage, forming a second layer of insulation protection to further avoid the risk of electric shock. At the same time, the rock wool insulation layer is a non-combustible material, reducing the fire hazard. The interference fit between the flexible insulated water pipe and the water pipe joint and the wrapping of the insulation tape ensure the sealed flow of the cooling medium, and also has waterproof and dustproof functions.

[0015] 3. This utility model integrates electromagnetic induction heating, heat preservation, cooling protection, and insulation safety functions. The components work together to achieve a balance between efficient heating and safe operation in a compact structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled parts of this utility model; Figure 3 for Figure 2 A magnified view of part A in the middle; Figure 4 This is a schematic diagram of the structure of a hollow metal tube; Figure 5 for Figure 4 A magnified view of part B in the middle section; Figure 6 This is a reference diagram showing the usage state of this utility model.

[0017] In the diagram, 1 is the electromagnetic heating cylinder; 101 is the water outlet pipe; 102 is the water inlet pipe; 2 is the insulation layer; 3 is the electrical connection port; 4 is the flexible insulated water pipe; 5 is the hollow metal tube; 501 is the heat shrink tubing; 502 is the spiral metal tube; 503 is the water pipe joint; 6 is the insulation layer; 7 is the heat pump; 8 is the cooling water tank; and 9 is the high-temperature water tank. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Example 1: like Figures 1 to 5 As shown, an electromagnetic heating device for a fluid kinetic energy heat pump includes an electromagnetic heating cylinder 1, which is made of magnetically conductive metal and is the core heating cavity of the entire heating device. An outlet pipe 101 and an inlet pipe 102 are fixedly connected to both ends of the electromagnetic heating cylinder 1, respectively. The inlet pipe 102 is used to introduce the low-temperature fluid to be heated into the electromagnetic heating cylinder 1, and the outlet pipe 101 is used to discharge the heated high-temperature fluid to a storage mechanism or heating system, forming a closed-loop flow path for the fluid. A spirally distributed hollow metal tube 5 is provided on the outer side of the electromagnetic heating cylinder 1. The spiral structure increases the contact area with the electromagnetic heating cylinder 1, extending the electromagnetic induction distance; the hollow design allows cooling water or other cooling media to circulate inside, preventing excessive heating due to electromagnetic induction; the metal material is conductive and can serve as a carrier for the electromagnetic induction coil, generating an alternating magnetic field after energization, causing the electromagnetic heating cylinder 1 to heat up.

[0020] An insulation layer 6 is provided between the hollow metal tube 5 and the electromagnetic heating cylinder 1. The insulation layer 6 can reduce the heat loss of the electromagnetic heating cylinder 1 to the outside, reduce heat loss, and improve heating efficiency; at the same time, it prevents the hollow metal tube 5 from overheating due to direct contact with the high-temperature heating cylinder, ensuring the stability of its insulation layer and cooling function. In this embodiment, the insulation layer 6 is preferably made of rock wool. Rock wool has excellent thermal insulation properties, is resistant to high temperatures and has good chemical stability. It can effectively block the heat transfer of the electromagnetic heating cylinder 1 to the hollow metal tube 5 and the outside, reducing heat loss; at the same time, rock wool is a non-combustible material, which can improve the fire safety of the device.

[0021] The hollow metal tube 5 has detachable flexible insulated water pipes 4 connected to both ends. The flexible insulated water pipes 4 are preferably made of silicone, whose flexibility facilitates device installation and pipe reversal, adapting to different spatial layouts. The insulation material prevents leakage risks when the hollow metal tube 5 is energized. The flexible insulated water pipes 4 are detachable, facilitating later maintenance, replacement, or cleaning of the interior of the hollow metal tube 5. Simultaneously, the flexible insulated water pipes 4 serve as inlet and outlet channels for the cooling medium, enabling the circulation and discharge of the cooling medium. The hollow metal tube 5 is equipped with a conductive port 3, which serves as the connection point between the hollow metal tube 5 and an external power source or controller. Alternating current can be introduced, causing the hollow metal tube 5 to generate an alternating magnetic field, providing energy for the induction heating of the electromagnetic heating cylinder 1.

[0022] like Figure 5 As shown, the hollow metal tube 5 includes a spiral metal tube 502. The spiral shape of the spiral metal tube 502 enhances the strength and uniformity of the alternating magnetic field, improving the induction heating efficiency of the electromagnetic heating cylinder 1. The power inlet 3 is directly connected to the spiral metal tube 502, ensuring stable current transmission to the spiral metal tube 502 and guaranteeing the continuity of magnetic field generation. The spiral metal tube 502 is wrapped with a heat-shrink tubing 501. After being heated and shrunk, the heat-shrink tubing 501 tightly adheres to the surface of the spiral metal tube 502, forming the first layer of insulation protection to prevent the spiral metal tube 502 from directly conducting electricity with other components. It also has temperature resistance and wear resistance properties, protecting the spiral metal tube 502 from external environmental corrosion and extending its service life. Water pipe connectors 503 are fixed at both ends of the spiral metal tube 502. The water pipe connectors 503 provide a connection interface between the spiral metal tube 502 and the flexible insulated water pipe 4, ensuring the airtightness of the cooling medium flow. During installation, the flexible insulated water pipe 4 and the water pipe joint 503 are interference-fitted. The interference fit can enhance the tightness of the connection, prevent the leakage of cooling medium, and ensure the stable operation of the cooling system.

[0023] In this invention, the spiral metal tube 502 is a hollow copper tube. The hollow structure meets the requirements for cooling medium flow. Copper tubes have excellent electrical conductivity, efficiently conducting alternating current and generating a strong magnetic field, thus improving the efficiency of electromagnetic induction heating. Copper also has good thermal conductivity, allowing it to quickly transfer the Joule heat generated by the current to the internal cooling medium, facilitating heat dissipation and preventing overheating. Furthermore, it possesses certain mechanical strength and corrosion resistance, making it suitable for long-term use. In this embodiment, during installation, the flexible insulated water pipe 4 and the water pipe connector 503 are preferably fixedly connected by clamps. The clamps further enhance the fixing strength at the connection, preventing the flexible insulated water pipe 4 from detaching from the connector due to pressure or vibration. Insulating tape is wrapped around the connection between the flexible insulated water pipe 4 and the water pipe connector 503 to fill gaps and strengthen insulation, avoiding the risk of leakage due to poor sealing at the joint, while also providing waterproofing and dustproofing.

[0024] Example 2: An electromagnetic heating device for a fluid kinetic energy heat pump includes an insulating layer 2 on the outer side of a hollow metal tube 5. When the hollow metal tube 5 is energized, the insulating layer 2 isolates the hollow metal tube 5 from the external environment, preventing electric shock accidents when personnel come into contact with it or with other metal parts. Simultaneously, it reduces heat radiation from the hollow metal tube 5 to the outside, helping to maintain its own temperature stability. During manufacturing, the insulating layer 2 is formed by winding insulating tape. Multiple layers of the insulating tape form a dense insulating barrier, further isolating the charged parts of the spiral metal tube 502 and strengthening the overall insulation effect. The winding method is flexible and can adapt to the irregular shape of the spiral metal tube 502, ensuring no dead corners in the insulation. Furthermore, the insulating tape material is low in cost, facilitating production and subsequent maintenance and replacement. Other aspects are the same as in Embodiment 1.

[0025] Working principle: like Figure 6As shown, this utility model is used in conjunction with a heat pump 7. The heat pump 7 is equipped with a cooling water tank 8, a heat exchanger, a refrigerant heat exchange system, and a high-temperature water tank 9. During installation, the inlet pipe 102 of the electromagnetic heating cylinder 1 is connected to the water supply system through a pump, the outlet pipe 101 of the electromagnetic heating cylinder 1 is connected to the high-temperature water tank 9, and the flexible insulated water pipe 4 is connected to the cooling water tank 8 through the heat exchanger and the water pump. During operation, under the action of the pump, the water supply system introduces water into the electromagnetic heating cylinder 1 through the inlet pipe 102. The external power supply introduces alternating current into the spiral metal tube 502 of the hollow metal tube 5 through the power interface 3. Since the spiral metal tube 502 is a conductive hollow copper tube, its spiral structure generates an alternating electromagnetic field under the action of the current. The electromagnetic field acts on the inner electromagnetic heating cylinder 1 in the form of electromagnetic induction. As a magnetically conductive metal body, the electromagnetic heating cylinder 1 generates eddy current effect due to electromagnetic induction in the alternating electromagnetic field. The eddy current is converted into heat energy inside the heating cylinder, causing the temperature of the electromagnetic heating cylinder 1 to rise rapidly, which in turn rapidly heats the water inside. The heated water is finally discharged through the outlet pipe 101 to the high-temperature water tank 9 of the heat pump 7 for temporary storage, thus completing the transfer of heating energy.

[0026] During the heating process, the insulation layer 6 effectively prevents heat from diffusing outward, ensuring that most of the heat is concentrated inside the heating cylinder, reducing heat loss. Meanwhile, the spiral metal tube 502 generates Joule heat due to the current flowing through it while producing an electromagnetic field. At this time, cooling water from the cooling water tank 8 in the heat pump 7 is pumped into the flexible insulated water pipe 4 and introduced into the hollow channel of the spiral metal tube 502, carrying away its own heat and preventing overheating that could cause the insulation layer of the heat shrink tubing to fail or its performance to degrade. The heated cooling water is discharged through the other end of the flexible insulated water pipe 4 and enters the heat exchanger. The heat pump 7 can cool the heat exchanger through the refrigerant heat exchange system, lowering the temperature of the cooling water before it returns to the cooling water tank 8, forming a cooling cycle.

[0027] This invention forms a double insulation barrier between the heat shrink tubing 501 on the outside of the spiral metal tube 502 and the outer insulation layer 2, preventing its live parts from contacting the outside world and avoiding the risk of electric shock; the interference fit between the flexible insulated water pipe 4 and the water pipe joint 503 and the wrapping of the insulating tape ensure the sealed flow of the cooling medium, while strengthening the insulation at the connection; and the use of a rock wool insulation layer has both insulation and flame-retardant properties, reducing the possibility of fire caused by high-temperature components.

[0028] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electromagnetic heating device for a fluid kinetic energy heat pump, comprising an electromagnetic heating cylinder (1), wherein an outlet pipe (101) and an inlet pipe (102) are respectively fixedly connected to both ends of the electromagnetic heating cylinder (1), characterized in that: The outer side of the electromagnetic heating cylinder (1) is provided with a spirally distributed hollow metal tube (5), and a heat insulation layer (6) is provided between the hollow metal tube (5) and the electromagnetic heating cylinder (1). The two ends of the hollow metal tube (5) are respectively connected to a detachable flexible insulating water pipe (4), and an electrical connection port (3) for conducting electricity is provided on the hollow metal tube (5).

2. The electromagnetic heating device for a fluid kinetic energy heat pump according to claim 1, characterized in that: The hollow metal tube (5) includes a spiral metal tube (502), an electrical port (3) is connected to the spiral metal tube (502), the outside of the spiral metal tube (502) is wrapped with a heat shrink tube (501), and water pipe joints (503) are fixed at both ends of the spiral metal tube (502). The flexible insulated water pipe (4) is interference-fitted with the water pipe joint (503).

3. The electromagnetic heating device for a fluid kinetic energy heat pump according to claim 2, characterized in that: The spiral metal tube (502) is a hollow copper tube.

4. The electromagnetic heating device for a fluid kinetic energy heat pump according to claim 2, characterized in that: The flexible insulated water pipe (4) and the water pipe joint (503) are fixedly connected by clamps, and the connection between the flexible insulated water pipe (4) and the water pipe joint (503) is wrapped with insulating tape.

5. The electromagnetic heating device for a fluid kinetic energy heat pump according to claim 1, characterized in that: The insulation layer (6) is made of rock wool.

6. The electromagnetic heating device for a fluid kinetic energy heat pump according to any one of claims 1 to 5, characterized in that: The hollow metal tube (5) has an insulating layer (2) on its outer side.

7. The electromagnetic heating device for a fluid kinetic energy heat pump according to claim 6, characterized in that: The insulating layer (2) is formed by wrapping insulating tape.

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