TW201803404A - Fast electromagnetic heater for fluids featuring high heating efficiency and small size, and capable of rapidly heating fluids using thermal energy generated by coercivity - Google Patents

Abstract

The present invention discloses a fast electromagnetic heater for fluids, comprising first magnetism-inducing heating elements and a plurality of second magnetism-inducing heating elements made of highly magnetic metal, and a heat-conducting pipe made of metal with high thermal conductivity coefficient; the heat-conducting pipe is wound around the surface of the first magnetism-inducing heating elements. The second magnetism-inducing heating elements are respectively arranged on the two side surfaces of the heat-conducting pipe, two ends of the heat-conducting pipe are provided with an inlet port and an outlet port, and the inlet port and the outlet port are respectively provided with a terminal, after the terminal is electrically connected, the heat-conducting pipe generates a high frequency magnetic field circuit between the first and second magnetism-inducing heating elements. The high frequency magnetic field circuit induces the first and second magnetism-inducing heating elements to form coercivity and accordingly generates thermal energy. The thermal energy generated by the first and second magnetism-inducing heating elements is directly conducted to the heat-conducting pipe, which is added by the electric heat of the heat-conducting pipe itself to form comprehensive multiple heat sources. The electromagnetic heater structure is characterized in that fluids flowing into the inlet port will be heated and then flows out of the outlet port.

Description

Fluid fast electromagnetic heater

The invention relates to a fluid rapid electromagnetic heater, in particular to a fluid rapid electromagnetic heater with high heating efficiency and small volume, which can rapidly heat a circulating fluid.

The traditional electric heating device, which is simpler, is like a general electric heating furnace or electric pan product, which uses the characteristics of the electric heating wire or electric tube to generate heat energy (Q = 0.24 * I ² Rt) after being energized to directly heat the preheating Articles or devices.

The inventor previously applied to Jun Bureau for application No. 105200073 "instantaneous heating device" and approved the announcement. It includes a highly magnetically permeable heating element. The heat conducting element with special characteristics is covered with a heat insulating layer on the outer peripheral side of the heat conducting element, and an electromagnetic winding is wound around the outer peripheral side of the heat insulating layer. Another hollow magnetically permeable outer conducting magnet is to accommodate the aforementioned heat conducting element and magnetically conductive heating element. And electromagnetic windings. After the electromagnetic windings are energized, a high frequency magnetic field circuit is generated between the outer conductive magnet and the magnetically conductive heating plate. The high frequency magnetic field circuit is used to act on the magnetically conductive heating plate, which can induce the formation of the surface of the magnetically conductive heating plate. The eddy current generates lossy heat, and the thermal energy generated by the magnetically conductive heating plate is directly transmitted to the thermally conductive element and transmitted outward; however, the inventor believes that the patent is still not perfect.

When the electromagnetic winding is wrapped around the magnetically conductive heating element and the thermally conductive element, a heat insulation layer must be provided in the middle. Therefore, the overall volume cannot be reduced. At the same time, the thermally conductive element is wound around the magnetically conductive heating element because the thermally conductive element and the conductive element are wound. The contact area of the magnetic heating element is limited, causing The thermal energy generated by the magnetically conductive heating element cannot be completely transmitted to the thermally conductive element, and the efficiency for high-temperature heating is limited. In view of this, the inventor has repeatedly improved the aforementioned imperfections, and finally the present invention is generated.

The main object of the present invention is to provide a fluid fast electromagnetic heater with high heat generation efficiency and capable of rapidly heating a circulating fluid.

Another object of the present invention is to provide a rapid electromagnetic heater that integrates a fluid pipeline and an electromagnetic winding to make a fluid with a smaller volume.

Another object of the present invention is to provide a fluid fast electromagnetic heater that increases the heating area of a fluid pipeline and increases the electromagnetic path.

In order to achieve the above-mentioned objects and effects, the technical measures adopted by the present invention include: a first magnetically conductive heating element made of a highly magnetically conductive metal; and a high thermal conductivity metal made of and wound around the first magnetically conductive heating element A heat conduction pipe on the surface, the two ends of the heat conduction pipe are provided with an introduction port and a lead-out port, and the introduction port and the lead-out port are respectively provided with a terminal; The two magnetically permeable heating elements on the side surface, whereby the thermally conductive tube generates a high-frequency magnetic field loop between the magnetically permeable heating elements after the terminals are electrically connected. The high-frequency magnetic field loop induces the first magnetically permeable heating element, The plurality of second magnetically permeable heating elements are formed to induce magnetic loss and generate thermal energy. The thermal energy generated by the first magnetically permeable heating element and the plurality of second magnetically permeable heating elements is directly transmitted to the heat pipe, plus the electric heat of the heat pipe itself, and An electromagnetic heater structure with integrated multiple heat sources, which causes the fluid flowing from the inlet to be heated and then flow out from the outlet.

According to the above structure, the heat transfer pipe is a flat heat transfer pipe, and a wider side thereof It is evenly wound on the surface of the first magnetically permeable heating element.

According to the above-mentioned structure, it further comprises: a heat-insulating shell formed by the opposite combination of two half-shells. The two half-shells are provided with a plurality of holes at their joints. The magnetically permeable heating element is housed in a heat-insulating shell, and the aforementioned inlet and outlet are respectively extended outward from the holes.

In order to obtain a more specific understanding of the above-mentioned objects, effects, and characteristics of the present invention, the description according to the drawings is as follows:

1‧‧‧The first magnetically conductive heating element

2‧‧‧ heat pipe

21‧‧‧ entrance

22‧‧‧ exit

23‧‧‧Terminal

24‧‧‧ Wide Noodle

25‧‧‧contact surface

3, 3a, 3b‧‧‧Second magnetically conductive heating element

4‧‧‧Insulation

4a, 4b ‧‧‧ half shell

41‧‧‧ Hole

5‧‧‧ high frequency transformer

a‧‧‧Iron and non-ferrous materials

b‧‧‧ soft ferrite

c‧‧‧hard ferrite

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

Fig. 3 is a side sectional view of a preferred embodiment of the present invention.

Figure 4 is a schematic diagram of the hysteresis curve.

Figure 5 is a schematic diagram of the comprehensive hysteresis curve.

Please refer to Figs. 1 to 3, it can be seen that the structure of the present invention mainly includes: a first magnetically conductive heating element 1, a heat conducting tube 2, a plurality of second magnetically conductive heating elements 3, and a heat insulation shell 4, wherein: The first magnetically permeable heating element 1 is made of a highly magnetically permeable metal, which can induce eddy currents on the surface under the action of a magnetic field to generate heat loss. The heat pipe 2 is made of a metal with high thermal conductivity and is wound around the first section. The surface of a magnetically conductive heating element 1 is provided with an inlet 21 and an outlet 22 at both ends of the heat transfer tube 2 and is introduced into The port 21 and the lead-out port 22 are respectively provided with a terminal 23. It should be noted that, in a feasible embodiment, the heat conducting tube 2 is provided in a flat configuration, and the flat heat conducting tube 2 is A wide surface 24 (that is, a wider side surface) is uniformly wound on the surface of the first magnetically-conductive heating element 1, and a contact surface 25 is formed after the winding is completed.

The plurality of second magnetically permeable heating elements 3 are respectively disposed on the surface of the heat conducting tube 2. When the heat conducting tube 2 is wound around the first magnetically permeable heating element 1, two large contact surfaces 25 are formed on the top and bottom. The second magnetically conductive heating element 3a is disposed on the upper contact surface 25, and the second magnetically conductive heating element 3b is disposed on the lower contact surface 25, and the material characteristics of the second magnetically conductive heating element 3 are the same as those of the first magnetically conductive heating Element 1 will not be described again.

The heat-insulating shell 4 is formed by oppositely combining two half-shells 4a, 4b. The two half-shells 4a, 4b are provided with a plurality of holes 41 at their joints. The plurality of second magnetically permeable heating elements 3 are housed in the heat insulation case 4, and the introduction opening 21 and the guide outlet 22 respectively extend outward from the holes 41. It should be noted that, in a feasible embodiment, the The heat insulation shell 4 may be made of heat insulation materials such as glass fiber, asbestos, rock wool, silicate, aerogel, etc. In another feasible embodiment, the material of the heat insulation shell 4 is a high temperature resistant material The hollow structure is made, and the hollow space is filled with glass fiber, asbestos, rock wool, silicate, aerogel and other thermal insulation materials to form the effect of protecting the internal structure, magnetic field isolation and thermal insulation.

After the high-frequency transformer 5 is electrically connected to the terminal 23, a high-frequency current passes through the heat-conducting tube 2. It should be noted that the heat-conducting tube 2 is wound on the surface of the first magnetically-conductive heating element 1 and formed. The type of the coil winding, so the heat pipe 2 generates a high-frequency electromagnetic field. When the magnetic field passes through the first and second magnetically conductive heating element 1 and 3, a high frequency magnetic field circuit is generated. The high frequency magnetic field circuit Induction of the first magnetically permeable heating element 1 and the second magnetically permeable heating element 3 forms induced magnetic losses to generate thermal energy, the first magnetically conductive heating element 1 and the plurality of second magnetically conductive heating elements 3 directly transmit the thermal energy to the heat transfer tube 2 so that the fluid flowing in through the inlet 21 is rapidly heated by The outlet 22 flows out. In addition to the heating technology described above, it should be noted that the heat transfer tube 2 is made of a metal with high thermal conductivity (such as stainless steel, copper, etc.). After high-frequency current passes through the heat transfer tube 2, The heat transfer tube 2 itself is equivalent to a resistance heater, so the heat energy generated during fluid heating is further enhanced.

Please refer to FIG. 4 and FIG. 5 for a schematic diagram of a hysteresis loop and a mixed hysteresis loop. In the figure, the magnetic field strength code is H and the magnetic induction strength code is B. In magnetic materials, the hysteresis curve is a very important parameter. Hc in Figure 4 is called coercivity, also known as induced magnetic loss. It is the resistance in the process of magnetization and an energy barrier ( energy barriers), which is also a representative of iron loss. In the ferrite manufacturing process, there is no way to minimize it (Hc) to avoid loss and heat generation in the magnetic circuit. Therefore, when different magnetic materials are used in the magnetic circuit The temperature of magnetic materials with large Hc will be much higher. Relative to soft ferrite, because Hc is small, the soft ferrite is low and the temperature is low. In Figure 5, the curves of different materials are put together. For easy comparison, from the perspective of heating efficiency, the heating effect is ordered as follows: hard ferrite c (hard ferrite), iron and non-ferrous materials a (including nickel), and then soft ferrite b (soft ferrite), you can hardly see it in the picture Coercivity (Hc), that is, the lowest temperature of non-heating; from the above, it can be known that after the first magnetically conductive heating element 1 and the second magnetically conductive heating element 3 (see FIG. 2) pass through the magnetic field, Can generate a large amount of induced magnetic loss and generate heat energy.

To sum up, the fluid rapid electromagnetic heater of the present invention has the following technical characteristics: the heat transfer tube 2 is wound around the first magnetically permeable heating element 1 to form a winding coil Therefore, in addition to allowing the fluid to pass through, the heat conducting tube 2 directly replaces the arrangement of the electromagnetic winding in the previous case, so that the overall volume is reduced; meanwhile, the heat conducting tube 2 is wound around the first magnetically conductive heating element 1 described above. In addition, the contact surfaces 25 formed thereon are respectively provided with the aforementioned second magnetically permeable heating element 3, so that the heat transfer tube 2 and the first magnetically permeable heating element 1 and the plurality of second magnetically permeable heating elements 3 have a greater directness. The contact area can increase the heat transfer efficiency. At the same time, the first magnetically conductive heating element 1 and the plurality of second magnetically conductive heating elements 3 generate thermal energy at the same time, which can increase the temperature and speed of instant heating at the fastest speed, and the heat transfer tube 2 It is made of metal with high thermal conductivity (such as stainless steel, copper, etc.). When low voltage and high current pass through the heat pipe 2, the heat pipe 2 itself is equivalent to a resistance heater, so the heat energy generated by the fluid is further enhanced. Furthermore, it can be known from the foregoing description of the hysteresis curve that the present invention only needs a high-frequency transformer 5 with a low voltage and high current output (see FIG. 1) to generate high temperature and rapid heating. Power fluid into the heat pipe, then the present invention can effectively decrease required.

To sum up, the present invention is a novel and progressive invention, and an application for an invention patent has been filed according to law; however, the above description is only a description of the preferred embodiments of the present invention. For example, the technical means according to the present invention Changes, modifications, alterations, or equivalent substitutions that extend from the category should also fall within the scope of the patent application of the present invention.

1‧‧‧The first magnetically conductive heating element

2‧‧‧ heat pipe

21‧‧‧ entrance

22‧‧‧ exit

23‧‧‧Terminal

24‧‧‧ Wide Noodle

25‧‧‧contact surface

3, 3a, 3b‧‧‧Second magnetically conductive heating element

4‧‧‧Insulation

4a, 4b ‧‧‧ half shell

41‧‧‧ Hole

Claims (3)

A fluid rapid electromagnetic heater at least comprises: a first magnetically permeable heating element made of a highly magnetically permeable metal; a heat conducting tube made of a high thermal conductivity metal and wound around the surface of the first magnetically permeable heating element The two ends of the heat conducting tube are provided with an introduction port and a lead-out port, and the lead-in port and the lead-out port are each provided with a terminal; the plurality of second magnetically conductive heating elements are made of highly magnetically conductive metal and are respectively disposed in the aforementioned heat-conducting tubes. Surfaces on both sides; after the terminal is energized, the heat conducting tube group generates a high frequency magnetic field circuit between the magnetically conductive heating elements, and the high frequency magnetic field circuit induces the first magnetically conductive heating element and a plurality of second magnetically conductive heating elements Eddy currents are formed on the surface to generate lossy heat. The thermal energy generated by the first magnetically conductive heating element and the plurality of second magnetically conductive heating elements is directly transmitted to the heat pipe, so that the fluid flowing from the introduction port is heated and then flows out from the conduction port. The fluid rapid electromagnetic heater according to item 1 of the patent application scope, wherein the heat transfer tube is a flat heat transfer tube, and a wider side thereof is evenly wound around the surface of the first magnetically conductive heating element. The fluid rapid electromagnetic heater according to item 1 of the scope of patent application, further comprising a heat-insulating shell, which is formed by relatively combining two half-shells, and the two half-shells are provided with a plurality of holes at the joints. The first magnetically permeable heating element, the heat conducting tube, and the plurality of second magnetically permeable heating elements are housed in a heat-insulating shell, and the inlet and the outlet are respectively extended outward from the holes.