Circuit board capable of preventing electromagnetic wave radiation and electric flame stove

Abstract

The utility model discloses a circuit board capable of preventing electromagnetic wave radiation, which is used for an electric flame stove and comprises an electronic component area and a needle area which are arranged on the circuit board. The electronic component area is covered with a layer of insulating heat-conducting glue, and a plurality of groups of heat radiators made of conductive metal are mounted on the surface of the heat-conducting glue; the plurality of groups of radiators cover the electronic component area and form an anti-radiation layer for absorbing or emitting electromagnetic waves; and the multiple groups of radiators are connected with a ground wire. The circuit board is provided with the radiators and covers the whole electronic element area, and the radiators are electrically connected with the ground wire, so that electromagnetic waves generated by electrode discharge on the burner are absorbed, and electronic components in the electronic element area are protected from being affected by the electromagnetic waves. The radiator is further provided with a plurality of radiating fins, heat generated by the electronic assembly is conducted to the radiator and the radiating fins through heat radiation, the radiating fins are blown and radiated through the fan, and the temperature of the electronic assembly is better prevented from being too high.

Description

Technical Field

[0001] The utility model specifically relates to a circuit board capable of preventing electromagnetic wave radiation. Background Art

[0002] Electric arc is a gas discharge phenomenon, which produces high-temperature and highly conductive free gas, namely plasma. The electric flame stove uses high-voltage electricity to break through the air to form a stable electric arc, and the high-temperature plasma generated heats the pot body. The working principle of the electric flame stoves currently on the market is basically that the transformer module increases the low-voltage electricity to high-voltage electricity and outputs it to the rectifier circuit, converts the alternating current into direct current through the rectifier and distributes the high-voltage power supply to multiple electrode needles. When the electrode needles discharge, a high-temperature plasma flame is generated, providing a powerful heating capacity for the electric flame stove.

[0003] For example, the patent with application number: CN202410091266.5 proposes a plasma generator with optimized structure and a burner head of an electric flame stove, including an anode cylindrical platform, a ceramic tube, and a cathode shrink tube; the ceramic tube is a cylinder with two openings and interconnected at both ends, and the lower end of the ceramic tube is provided with an annular embedded groove, and the anode cylindrical platform is embedded in the embedded groove; a conical arc-starting cone is provided at the center of the anode cylindrical platform, and the arc-starting cone extends into the inner cavity of the ceramic tube; the cathode shrink tube is a cylinder, and a circular cathode arc-starting end is provided at the lower end of the cathode shrink tube, and the cathode arc-starting end is embedded in the upper end of the ceramic tube. The anode cylindrical platform used for discharge in this invention does not require threaded connection or welding, so it is simple to assemble, reduces labor costs, and improves production efficiency.

[0004] However, the gas collecting box of the above-mentioned patented electric flame stove burner head in contact with the anode column adopts a low-cost insulating mica board or a ceramic board. In the actual product application process, the mica board or the ceramic board cannot absorb electromagnetic waves. The electromagnetic waves generated by the high-voltage discharge of the electrode will penetrate the mica board or the ceramic board, affecting the electronic components of the circuit below, causing the electronic components to heat up and overheat, making them easily damaged, affecting the normal use and safety of the commercial electric flame stove. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A circuit board for preventing electromagnetic wave radiation, used for an electric flame stove, comprising an electronic component area and a needle area arranged on the circuit board; the electronic component area is covered with a layer of insulating thermal conductive glue, and multiple groups of conductive metal heat sinks are installed on the surface of the thermal conductive glue; multiple groups of the heat sinks cover the electronic component area and form a radiation-proof layer for absorbing or emitting electromagnetic waves; the multiple groups of the heat sinks are all connected to the ground wire;

[0007] Preferably, the needle area is provided with a plurality of output needles for electrically connecting corresponding electrodes on the burner;

[0008] Preferably, a single output pin is electrically connected to a corresponding electronic component in the electronic component area via a wire laid on the circuit board;

[0009] Preferably, the electronic component area is arranged on the upper and lower surfaces at both ends of the circuit board;

[0010] Preferably, the radiator is provided with a plurality of radiating fins for increasing the heat dissipation area;

[0011] An electric flame cooker, comprising any one of the circuit boards described above.

[0012] Compared with the prior art, the advantages of the utility model are: the circuit board is installed with a radiator and covers the entire electronic component area, and the radiator is electrically connected to the ground wire, forming an absorption of electromagnetic waves generated by the discharge of electrodes on the furnace head, protecting the electronic components in the electronic component area from the influence of electromagnetic waves; a plurality of cooling fins are also arranged on the radiator, and the heat generated by the electronic components is conducted to the radiator and the cooling fins through thermal radiation, and the heat is dissipated by blowing air to the cooling fins through a fan, thereby better preventing the electronic components from overheating.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0018] In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In addition, the technical features involved in the different embodiments of the present invention described later can be combined with each other as long as they do not conflict with each other.

[0020] See also Figure 1 In an embodiment of the utility model, a circuit board for preventing electromagnetic wave radiation is used in an electric flame cooker, and includes an electronic component area 1 and a needle area 2 arranged on the circuit board;

[0021] In this embodiment, the electronic component area 1 is covered with a layer of insulating thermally conductive adhesive, and a plurality of groups of conductive metal heat sinks 3 are installed on the surface of the thermally conductive adhesive. The insulating thermally conductive adhesive fills the gaps between the electronic components and between the electronic components and the heat sink 3 to prevent short circuits, while ensuring that the heat of the electronic components is effectively transferred to the heat sink 3 to avoid overheating and damage to the electronic components.

[0022] When the electrodes on the burner discharge, the electromagnetic waves generated will penetrate the bottom plate of the burner and radiate outside. The electromagnetic radiation will affect the circuit. The conductor can both absorb and reflect electromagnetic wave energy. When the electromagnetic wave passes through the conductor, the free electrons in the conductor will be affected by the electromagnetic wave and vibrate. The vibration of the free electrons will consume the energy of the electromagnetic wave, causing the electromagnetic wave to be absorbed. After the electromagnetic wave energy in the conductor is absorbed, it will be converted into heat energy, causing the local temperature of the conductor to rise. Therefore, the electromagnetic wave will burn out the electronic components in the circuit.

[0023] In this embodiment, multiple groups of heat sinks 3 cover the electronic component area 1 and form an electromagnetic shielding layer that absorbs or emits electromagnetic waves, reducing the impact of electromagnetic waves on electronic components, and the heat sinks 3 are all connected to the ground wire to absorb the current generated by the electromagnetic waves and guide them to the ground wire.

[0024] In another embodiment, the radiator 3 is provided with a plurality of heat dissipation fins 31, which increase the heat dissipation area and improve the heat dissipation efficiency by dissipating heat from the heat dissipation fins 31 through airflow. The shape of the heat dissipation fins 31 can be a plane shape, a wing shape, or a column shape.

[0025] The needle area 2 is provided with a plurality of output needles 21 for electrically connecting to corresponding electrodes on the burner, and a single output needle 21 is electrically connected to a corresponding electronic component in the electronic component area 1 through a wire laid on the circuit board;

[0026] The electronic component area 1 is arranged on the upper and lower surfaces of both ends of the circuit board;

[0027] The utility model also provides an electric flame cooker, which comprises the circuit board.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A circuit board for preventing electromagnetic wave radiation, used in an electric flame cooker, comprising an electronic component area and a needle area arranged on the circuit board; characterized in that: The electronic component area is covered with a layer of insulating thermal conductive glue, and a plurality of groups of conductive metal heat sinks are installed on the surface of the thermal conductive glue; A plurality of groups of heat sinks cover the electronic component area and form a radiation protection layer for absorbing or emitting electromagnetic waves; and a plurality of groups of heat sinks are all connected to the ground wire.

2. The circuit board for preventing electromagnetic wave radiation according to claim 1, characterized in that: The needle area is provided with a plurality of output needles for electrically connecting to corresponding electrodes on the burner.

3. The circuit board for preventing electromagnetic wave radiation according to claim 2, characterized in that: A single output pin is electrically connected to a corresponding electronic component in the electronic component area through a wire laid on the circuit board.

4. The circuit board for preventing electromagnetic wave radiation according to claim 1, characterized in that: The electronic component area is arranged on the upper and lower surfaces of both ends of the circuit board.

5. The circuit board for preventing electromagnetic wave radiation according to claim 1, characterized in that: The radiator is provided with a plurality of radiating fins for increasing the heat dissipation area.

6. An electric flame cooker, characterized in that: The electric flame range comprises the circuit board according to any one of claims 1 to 5.

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