CN217307912U - Electromagnetic induction heating block adopting annular coil - Google Patents

Abstract

The utility model relates to the technical field of heating, in particular to an electromagnetic induction heating block adopting an annular coil, which comprises an outer shell, an inner shell, an annular coil, a circuit board and a heating body, wherein the outer shell and the inner shell are both in annular structures, the inner shell is arranged in the outer shell, the annular coil is arranged between the inner shell and the outer shell, the heating body is arranged in the annular structure of the inner shell, and a through air flow channel is arranged between the heating body and the inner shell and/or on the heating body; the circuit board is used for connecting a power supply and providing high-frequency alternating current for the annular coil. The utility model provides an adopt annular coil's electromagnetic induction heating block, the alternating magnetic field that utilizes the coil to produce heats the heat-generating body, and the coil then is sealed between inner casing and shell body, can avoid conductive parts to expose, promotes the safety in utilization.

Description

Electromagnetic induction heating block adopting annular coil

Technical Field

The utility model belongs to the technical field of the technique of generating heat and specifically relates to an adopt annular coil's electromagnetic induction heating piece.

Background

At present, in the industry of warm air blowers, heating parts of the warm air blowers basically adopt PTC heating bodies, the PTC heating bodies can generate heat after being electrified, and the heat is taken away by utilizing air flow generated by the fans, so that warm air output is realized.

As the Chinese utility model patent: cn202121982504.x, a warm air blower, which uses a PTC heater for heating. However, since this heating structure requires the PTC heating element to be energized, the PTC heating element has a current, and thus a safety accident is likely to occur during use. In addition, the heating mode has low heating efficiency and high energy consumption.

Meanwhile, the PTC heating element has the characteristic of heating attenuation, and after the PTC heating element is used for a long time, the heating efficiency of the PTC heating element is seriously attenuated, so that the heating capacity is influenced. In addition, the heating value of the PTC heating elements can be adjusted only by the number of the PTC heating elements, and random stepless adjustment cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned technique not enough and provide an adopt annular coil's electromagnetic induction heating piece, can realize heating element non-conductive and promote the safety in utilization.

The utility model discloses an electromagnetic induction heating block adopting an annular coil, which comprises an outer shell, an inner shell, an annular coil, a circuit board and a heating body, wherein the outer shell and the inner shell are both in an annular structure; the circuit board is used for connecting a power supply and providing alternating current for the annular coil.

In the scheme, the annular coil is arranged between the inner shell and the outer shell, the inner shell and the outer shell are made of the insulating materials, at least the surface, which is in contact with the annular coil, of the inner shell and the outer shell is made of the insulating materials, the coil is coated with the insulating materials, the conductive element is prevented from being exposed in the using process, and the safety is higher. The annular coil is connected with the circuit board, the circuit board provides high-frequency alternating current for the annular coil, the annular coil generates an alternating magnetic field after being introduced with the high-frequency alternating current, the heating body is in the range covered by the magnetic field, and eddy current is generated in the heating body when magnetic induction lines of the magnetic field pass through the heating body, so that the heating body generates heat. When the warm air blower is used on a warm air blower, the warm air blower can be used for generating air flow, the air flow passes through an air flow channel between the heating body and the inner shell or inside the heating body, heat generated by the heating body can be conducted into the air flow, the air flow is heated, and warm air output is achieved. Adopt this kind of mode to heat the air, the heat-generating body itself is not circular telegram, uses safelyr, especially on the electric fan heater, bathroom environment uses, and the security is higher. The heating body can be made of iron material, aluminum material, stainless steel and other metal magnetic materials.

The magnet is arranged on the outer shell and is arranged on the outer shell in an annular shape, and the magnet is used for shielding magnetic induction lines generated by the annular coil in an annular range formed by the magnet. The magnet arranged on the outer shell can shield the magnetic induction line generated by the annular coil, and the phenomenon that the magnetic induction line is diffused outwards to heat a heating body outside the outer shell so as to influence the normal use of the equipment is avoided. The magnetic induction lines are shielded in the annular range formed by the magnet, namely the magnetic induction lines are shielded by the magnet in the process of diffusing the magnetic induction lines outwards, and the magnetic induction lines can be normally diffused in the annular range formed by the magnet.

The heating body is one or more plate bodies arranged at intervals, the plate bodies are fixed in the annular structure of the inner shell, and a plurality of vent holes are arrayed on each plate body. The heating body that adopts sets up for the interval of multi-disc plate body, can effectively increase its area that generates heat to can be more abundant to the heat exchange of the air through airflow channel, heat exchange efficiency is higher.

When the plate body is a plurality of plates, the positions of the vent holes on the plate body correspond to one another one by one to form an airflow channel. The structure can ensure that the air flow runs more smoothly and the wind resistance is smaller.

A concave cavity is arranged on the outer shell, and the magnet is arranged in the concave cavity. This structure can be better fix the magnet, and the wholeness of equipment is stronger, can avoid the magnet to drop etc. and influence equipment normal operating.

The above-mentioned loop coil may be a coil wound in a loop shape, or a loop-shaped coil combination formed by a plurality of coils arranged in a loop shape.

The utility model provides an adopt electromagnetic induction heating block of toroidal coil, the alternating magnetic field that utilizes toroidal coil to produce heats the heat-generating body, and toroidal coil then is sealed including between casing and the shell body, can avoid conductive parts to expose, promote the safety in utilization, and the efficiency of generating heat can reach more than 90%.

Additionally, the utility model provides an adopt annular coil's electromagnetic induction heating piece, it can adjust the frequency of the high frequency current of input annular coil through the circuit board to the realization is to the regulation of heat-generating body heating power, and can be electrodeless regulation. Meanwhile, electromagnetic heating is adopted, so that the attenuation condition can not occur in the long-time use process, and the use performance is better.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Example 1:

as shown in fig. 1, the utility model discloses an electromagnetic induction heating block using a ring coil, which uses a ring coil 2, comprising an outer shell 1, an inner shell 3, a ring coil 2, a circuit board and a heating element 4, wherein the outer shell 1 and the inner shell 3 are both in a ring structure, the inner shell 3 is arranged inside the outer shell 1, the ring coil 2 is arranged between the inner shell 3 and the outer shell 1, the heating element 4 is arranged inside the ring structure of the inner shell 3, and a through air flow channel 5 is arranged between the heating element 4 and the inner shell 3 and/or on the heating element 4; the circuit board is used for connecting a power supply and providing alternating current for the annular coil 2.

In the above scheme, the annular coil 2 is arranged between the inner shell 3 and the outer shell 1, the inner shell 3 and the outer shell 1 are made of insulating materials, at least the surface of the inner shell 3, which is in contact with the annular coil 2, on the outer shell 1 is made of the insulating materials, the coil is coated with the insulating materials, the conductive element is prevented from being exposed in the using process, and the safety is higher. The annular coil 2 is connected with the circuit board, the circuit board provides high-frequency alternating current for the annular coil 2, the annular coil 2 generates an alternating magnetic field after being introduced with the high-frequency alternating current, the heating element 4 is in the range covered by the magnetic field, and eddy current is generated in the heating element 4 when a magnetic induction line of the magnetic field passes through the heating element 4, so that the heating element 4 generates heat. When the warm air blower is used on a warm air blower, the fan can be used for generating airflow, the airflow passes through the airflow channel 5 in the heating body 4, heat generated by the heating body 4 can be conducted to the airflow, the airflow is heated, and warm air output is achieved. Adopt this kind of mode to heat the air, heat-generating body 4 self is not circular telegram, uses safelyr, especially on the electric fan heater, bathroom environment uses, and the security is higher. The heating element 4 may be made of a metal material such as an iron material, an aluminum material, or stainless steel.

A magnet 6 is arranged on the outer shell 1, the magnet 6 is arranged on the outer shell 1 in a ring shape, and the magnet 6 is used for shielding the magnetic induction lines generated by the ring-shaped coil 2 in the ring-shaped range formed by the magnet 6. The magnet 6 arranged on the outer shell 1 can shield magnetic induction lines generated by the annular coil 2, and the phenomenon that the magnetic induction lines are diffused outwards to heat the heating body 4 outside the outer shell 1 and influence the normal use of the equipment is avoided. Wherein, the shielding of the magnetic induction lines in the annular range formed by the magnet 6 means that the magnet 6 shields the magnetic induction lines to prevent the magnetic induction lines from diffusing outwards in the process of diffusing the magnetic induction lines outwards, and the magnetic induction lines can normally diffuse in the annular range formed by the magnet 6.

The heating body 4 is one or more plate bodies arranged at intervals, the plate bodies are fixed in the annular structure of the inner shell 3, and a plurality of vent holes are arrayed on each plate body. The heating body 4 that adopts is that the interval of multi-disc plate body sets up, can effectively increase its area that generates heat to can be more abundant to the heat exchange of the air through airflow channel 5, heat exchange efficiency is higher.

When the plate body is a plurality of plates, the positions of the vent holes on the plate body correspond to one another to form airflow channels 5. The structure can ensure that the air flow runs more smoothly and the wind resistance is smaller.

A recess 7 is provided in the outer housing 1, the magnet 6 being arranged in the recess 7. This structure can be better fix magnet 6, and the wholeness of equipment is stronger, can avoid 6 influences equipment normal operating such as drop of magnet.

The above-mentioned loop coil 2 may be a coil wound in a loop shape, or a loop-shaped coil combination formed by a plurality of coils arranged in a loop shape.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate medium, or may be an interaction relationship between the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention.

Claims (5)

1. An electromagnetic induction heating block adopting an annular coil is characterized in that: the heating device comprises an outer shell, an inner shell, an annular coil, a circuit board and a heating body, wherein the outer shell and the inner shell are both of annular structures, the inner shell is arranged inside the outer shell, the annular coil is arranged between the inner shell and the outer shell, the heating body is arranged inside the annular structure of the inner shell, and a through airflow channel is arranged between the heating body and the inner shell and/or on the heating body; the circuit board is used for connecting a power supply and providing alternating current for the annular coil.

2. The electromagnetic induction heating block using the toroidal coil as set forth in claim 1, wherein: the magnet is arranged on the outer shell and is arranged on the outer shell in an annular shape, and the magnet is used for shielding magnetic induction lines generated by the annular coil in an annular range formed by the magnet.

3. An electromagnetic induction heating block using a toroidal coil as claimed in claim 1 or 2, wherein: the heating body is one or more plate bodies arranged at intervals, the plate bodies are fixed in the annular structure of the inner shell, and a plurality of vent holes are arrayed on each plate body.

4. The electromagnetic induction heating block using the toroidal coil as set forth in claim 3, wherein: when the plate body is a plurality of plates, the positions of the vent holes on the plate body correspond to one another one by one to form an airflow channel.

5. The electromagnetic induction heating block using the toroidal coil as set forth in claim 2, wherein: a cavity is arranged on the outer shell, and the magnet is arranged in the cavity.

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